KR101694036B1 - An air cleaner capable of humidifying selectively - Google Patents

Abstract

The present invention relates to an air cleaner having a first filtering device and a second filtering device. The air cleaner of the present invention comprises: a casing (10) which has an inlet (12) for allowing air to be inserted and an outlet (14) for allowing air to be discharged; a fan motor assembly (400), which is installed in the casing and generates airflow to make air inserted through the inlet and discharged through the outlet, and a filter (210) which firstly filters external air which is inserted through the inlet; and a cyclone body (310) which secondly filters the air which has been firstly filtered by the filter. The filter (210) and the cyclone body (310) are connected through a connection path (R) in the casing. In the connection path (R), a window, which makes the inside and outside communicate, and a mode determination door (700), which opens and closes the window, are installed. Depending on a location of the door (700), in a state that the window is closed, the filter (210) and the cyclone body (310) can be operated, and, in a state that the window is opened, air in the connection path is discharged to the outside and, consequently, purification and humidification are performed only in the cyclone body (310).

Description

[0001] The present invention relates to an air cleaner capable of selectively humidifying air,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air purifier, and more particularly, to an air purifier capable of selectively performing secondary filtering capable of improving air purification efficiency through primary and secondary filtering, .

Traditionally, an air purifier has a function of purifying air using a predetermined filter or a filtering method using electricity. Basically, the humidifier generates humidification of indoor air by generating water vapor by various methods such as generation of water vapor using ultrasonic waves or heat, or natural vaporization using wind, irrespective of the air cleaning function It can be said to perform.

In recent years, various types of products having both the humidifying function and the air purifying function have been introduced in various forms, which are also called "airwashers" or "wet type air purifiers". Such an air purifier equipped with a humidification function is disclosed in Korean Patent No. 10-0863307, Japanese Patent No. 10-0805667, Registration Practical Utility Model Registration No. 20-0157935, and Korean Patent Publication No. 10-2010-0084828 It has been proposed in the form of branches.

In such an air purifier, a plurality of discs are provided on a rotating shaft disposed horizontally, and a plurality of such discs are partially rotated in a state of being immersed in water contained in a water tank. Airflow from the air blowing fan toward the disk assembly is formed so that foreign matter including dust and the like contained in the air is trapped in the water film formed on the surface of the disk and is transferred into water inside the water tank, The water on the surface of the assembly is naturally evaporated by the blowing of the blowing fan to perform a humidifying function.

However, the conventional air purifier has the following problems. In such air cleaning and humidification functions, the most important point in removing foreign substances contained in the air or spontaneously evaporating the water is the size of the contact area between the airflow and the water. However, according to the conventional air purifier, the contact area of the air flow generated in the first blowing fan is substantially limited to a part of the surface area of the disk, and the second air flow is once discharged to the outside of the air cleaner Therefore, there is a certain limit to the air purifying function and the humidifying function.

In order to sufficiently enlarge the surface area of a large number of disks provided on the rotary shaft, the interval between them must be narrow, which makes cleaning of the surface difficult. It is natural that the performance of the basic function of air cleaning is deteriorated.

Further, according to the conventional air purifier, a plurality of motors are required including a motor as a power source for rotating a rotary shaft on which a plurality of disks are mounted and a motor as a power source for rotating the air blowing fan. The necessity of at least two or more motors in this way not only increases the number of component parts but also causes a complicated assembly process. In other words, it can be pointed out that the increase in the production cost due to the increase in the number of relatively expensive components and the decrease in productivity in the assembly process can be pointed out.

In the present invention, in the purification of air, a HEPA filter basically used as a first filtering device is basically used, so that the filtering of fine foreign substances such as fine dust can be performed efficiently, The present invention has been conceived as an air purifier capable of performing the most efficient air purification and humidification through a second filtering device capable of performing purification and humidification using particles.

A first object of the present invention is to provide an air purifier having a substantially sufficient air purifying function by allowing water particles to be filtered using a cyclone principle as in the case of filtration of minute foreign matter by a filter do.

A second object of the present invention is to provide an air cleaner having sufficient humidification function as well as air purification by allowing air discharged into a room to have sufficient moisture.

A third object of the present invention is to provide an air purifier capable of selectively using two filtering means for filtering air.

A fourth object of the present invention is to provide an air cleaner capable of reducing the production cost and improving the productivity by minimizing the number of relatively expensive components such as a motor.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided an air cleaner comprising: a casing having an inlet through which air flows and an outlet through which air is discharged; An air flow generating means installed in the casing for generating air flow for introducing air through an inlet and discharging air through an outlet; First filtering means for firstly filtering outside air flowing through the inlet; First filtering means for secondarily filtering air primarily filtered by the first filtering means; A connection passage inside the casing for connecting the first filtering means and the second filtering means; A window formed in the connection passage for communicating the inside and the outside; A mode determination door for opening and closing the window; And door driving means for moving the door to a position where the door can open and close, respectively.

The second filtering means preferably further comprises a humidification function. With this second filtering means, it becomes possible to provide an air cleaner having substantially a humidifying function in addition to air cleaning.

In the present invention, it is preferable that the air flow generating means is provided between the first filtering means provided in the lower portion in the casing and the second filtering means provided in the upper portion in the casing.

The connection passage in the present invention is formed into a ring-shaped passage having a constant height from the inside of the casing having a circular cross section. Furthermore, it is more preferable that the air flow generating means generates air flow directed from the inside to the outside, and the air rising inside the connecting passage forms a swirling flow having spiral rotation.

According to a preferred embodiment of the present invention, it is preferable that the window and the mode change door are provided in a casing at a position including a height at which the air flow generating means is installed.

The door driving means for moving the door to a position where the door can open and close, respectively, includes door guiding means capable of moving the door to a predetermined path; And a moving means capable of reciprocating the door in a path guided by the door guiding means by a rotational force of the driving motor.

The door guiding means includes a pair of guide projections formed on the front upper and lower ends of the door and a pair of guide paths formed in the upper and lower sides of the casing so that the pair of guide projections can be respectively inserted and guided I propose an example.

The moving means includes a movable rail which is connected to the door in the moving direction by a pin, a rack portion whose upper end is connected to the movable rail, and a lower portion which is engaged with a pinion rotated by a driving motor, And an interlocking lever which is supported as much as possible.

The moving means of another embodiment is constituted by a moving rail which is connected to the door in a pin in the moving direction and a converting means which converts rotational motion generated in the motor into lateral movement of the moving rail.

According to the air purifier purifying method of the present invention having such a structure, the primary filter by the first filter which is the HEPA filter and the secondary filtering by the contact with the water particles by the cyclone method sufficiently filters the foreign matter So that it can be seen that there is a high reliability of air purification.

In the secondary filtering of the present invention, the water pump is scattered so that fine water particles are distributed widely inside the cyclone body, so that the swirling flow and the water particles formed inside the cyclone body repeatedly contact with the air many times . That is, in the inside of the cyclone body, the water particles are contacted with the air for a sufficient time, such as the swirl flow described above, and at the same time, the water particles have a sufficient surface area in contact with the air, so that efficient foreign matter filtration is possible.

Further, in the secondary filtration, fine water particles are naturally evaporated through sufficient contact with air, or discharged into the room like air, meaning that substantially sufficient humidifying effect can be secured. Accordingly, it can be seen that the air purifier of the present invention has a more efficient humidifying function as well as efficient air cleaning. By sufficiently bringing the fine particles of water and air into contact with each other, it can be said that there is a sufficient effect to substantially remove odors.

According to the present invention, by opening and closing the mode change door of the window formed on the outer side wall of the casing, it is possible to select only the air purifying mode or to easily select the air purifying and humidifying mode as necessary. Simply changing the mode according to the opening and closing of the door connecting the inside and the outside means that the usability is actually very good.

According to the present invention, it is possible to generate an airflow that flows from the outside to the inside using substantially one fan motor assembly, and that a swirling flow is formed in the inside of the cyclone body by using such an air flow . It can also be seen that the water pump is capable of scattering water particles by using such air flow. Therefore, by applying the method of the present invention, it is expected that the structure of the air purifier itself can be substantially simplified.

According to the present invention, since the cyclone body is formed of a material capable of inspecting the inside or having a sight window, the user can visually confirm the scattered or sprayed water in the inside of the cyclone body . Therefore, it is expected that the air purifying and humidifying effect can be more satisfactorily satisfied in terms of the psychological effect, and it will be understood that there are various other effects in the detailed description of the present invention.

1 is an exemplary perspective view of an air cleaner of the present invention.
2 is an exemplary perspective view of an exemplary air purifier of the present invention.
3 is an exemplary partial cutaway perspective view of a first filtering portion of an air cleaner of the present invention.
4 is an exemplary sectional view of a second filtering portion of an air cleaner of the present invention.
5 is an exemplary perspective view of a water pump of the air cleaner of the present invention.
6 is an explanatory view showing the air flow of the air cleaner of the present invention.
7 is an exemplary view of a water pump according to another embodiment of the present invention;
8 is an internal view of a water pump of another embodiment of the present invention.
Figure 9 is an exemplary perspective view of a mode change door around the present invention;
10 is an exemplary perspective view of a mode change door portion of the present invention;

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings.

As shown in FIGS. 1 and 2, the air purifier of the present invention has a casing 10 of a standing type having a predetermined height. An inlet 12 through which air flows from the outside is formed on the bottom side surface of the casing 10 and an outlet 14 through which the filtered air is discharged is formed on the upper surface of the casing 10. The outside air introduced through the inlet 12 is purified by the filtering units 200 and 300 provided in the casing 10 and then purified air is discharged through the outlet 14. [

In the illustrated embodiment, the casing 10 is constituted by a casing main body 20 forming a bottom surface and side walls, and a main cover 500 for opening and closing an open upper portion of the casing main body 20. A vent hole 510 is formed in a central portion of the main cover 500. The vent hole 510 is substantially the same as the outlet 14 through which purified and humidified air is discharged.

In order to purify the air introduced from outside, the casing 10 includes a first filtering unit 200 for primarily filtering the air introduced from the outside, and a second filtering unit 200 for filtering And a second filtering unit 300 for filtering the air again. The first filtering unit 200 may be substantially a filtering unit for filtering foreign matter using a HEPA (High Efficiency Particulate Air) filter. The second filtering unit 300 is a part for filtering the foreign substances and humidifying the air on the basis of the cyclone principle using water particles. It can be seen that the water pump of the present invention is a component used in the second filtering unit 300.

 As shown more clearly in FIG. 2, the first filtering unit 200 includes a conventional filter 210, which is a HEPA filter. The cylindrical filter 210 has upper and lower openings, and a cylindrical circumferential portion (sidewall portion) forms a filter. This filter 210 is a HEPA filter as described above, and air is filtered while passing through the filter body forming this circumferential portion. That is, it can be seen that the air passes through the filter 210 in the process of being sucked in the inner direction toward the center from the outer periphery side of the casing 10.

 As a result, the impurities are primarily filtered by the process of passing through the filter 210. It is a matter of course that the filter 210 for the first filtering of the impurities can be selected to have a desired specification and function. It is also possible to provide an odor removing function by selectively providing a filter having a function of removing odors, for example, removing impurities.

At the upper part of the filter 210, there is installed a fan 420 for generating an air flow from the outside to the inside of the air purifier. The fan used in the present invention is configured to blow air from the central portion of the filter 210 radially outward of the fan 420. Therefore, it is preferable to use a centrifugal fan, and a turbo fan, a sirocco fan, or the like may be used, but it is not limited thereto. It is sufficient that the fan 420 in the present invention sucks the air outside the casing 10 to pass the filter 210 and blow air inside the filter radially outward of the fan 420. [

The fan unit 420 is rotated by a motor unit 410 that generates a rotational force by application of power. The motor unit 410 includes a rotor, a stator, and a rotating shaft 412). The rotary shaft 412 is connected to the fan 420 to rotate the fan 420 and to generate airflow. Hereinafter, the fan 420 and the motor unit 410 will collectively be referred to as a fan motor assembly 400 that generates air flow.

When the fan motor assembly 400 is operated, air flows into the casing 10 through the inlet 12 formed on the outer surface of the casing 10. It can be seen that the inflowing air passes through the filter 210, moves upward from the center of the filter 210, and then moves radially outward by the fan 420.

The air radially outwardly moved by the fan 420 ascends along the connecting passage R. The connecting passage R is a cylindrical (ring having a height) formed between the casing 10 and the airflow housing 440. The connecting passage R is formed to extend from the outer portion of the fan 420 to the inside of the upper end of the casing 10. Since the fan 420 generates air flow passing through the connection passage R by rotation, air passing through the connection passage R substantially forms a spiral swirl flow. For example, in accordance with the rotation direction of the fan 420, the air flow rising while passing through the connection passage R as viewed in a plan view is raised while rotating counterclockwise.

If the air flow passing through the connecting passage R directly contacts the casing 10, a noise problem may be caused. That is, if the air flow converted in the radial direction by the fan 420 directly impacts the casing 10, noise may be generated. Therefore, in the illustrated embodiment, the connecting passage R of the portion adjacent to the fan 420 is configured to be formed by the airflow housing 440. 3, the airflow housing 440 includes a cylindrical inner tube 442 and an outer tube 444 which are spaced apart from each other by a predetermined distance, (R) is formed between the outer pipe (442) and the outer pipe (444).

 The inner tube 442 has a diameter substantially corresponding to the upper surface of the fan motor assembly 400 and the lower end of the inner tube 442 is positioned at a portion corresponding to the upper surface of the fan motor assembly 400. The outer tube 444 is spaced apart from the inner tube 442 by a predetermined distance so that the connection tube R can be formed and the lower end of the outer tube 444 is molded so as to be in close contact with the inner diameter of the filter 310 have. Here, the outer tube 444 of the airflow housing 440 may be said to be substantially in contact with the inner surface of the casing 10.

It will be appreciated that substantially the airflow housing 440 is installed directly above the fan motor assembly 400. The motor unit 410 is accommodated in a motor cover 414 recessed upward from the bottom surface of the air flow housing 440. The fan 420 rotating by the motor unit 410 includes an air flow Is an inner region of the diameter of the inner tube 442 of the housing 400 and is supported at a position corresponding to the lower region (space). Therefore, the air flow generated by the rotation of the fan 420 is guided to the connection passage R from the inside of the outer pipe 444.

Referring again to FIG. 2, a second filtering unit 300 is provided on the upper portion of the airflow housing 440. The second filtering unit 300 filters the air that has passed through the first filtering unit 200 and generates a humidifying function. The second filtering unit 300 includes a cyclone body 310. The cyclone body 310 is for performing filtration and humidification of foreign matter by forming a swirling flow of air supplied to the inside through the above-described connection passage (R).

In the illustrated embodiment, the cyclone body 310 is constituted by a cylindrical container having an open top, and water is supplied to the inside thereof. Here, the supply of water to the inside of the cyclone body 310 may be directly supplied by the user, or may be supplied so as to maintain a constant water level through a separate water tank.

The casing 10 is extended outside the cyclone body 310 at regular intervals, and the connecting passage R as described above is extended therebetween. Therefore, the airflow rising in the swirling flow form through the connection passage R enters the inside of the cyclone body 310 through the open top of the cyclone body 310.

The air flow rising in a swirling flow shape along the connection passage R is to be inserted into the cyclone body 310 whose upper end is opened when the main cover 500 can not be lifted further by the main cover 500 . Since the discharge hole 510 for discharging purified air is formed in the central portion of the main cover 500, air is introduced into the cyclone body 310 from the connection passage R more efficiently So that the air inside the cyclone body 310 can be more efficiently discharged through the discharge hole 510. In addition,

For example, the air flow rising in the swirling flow form along the connection passage R must enter the inside of the cyclone body 310 to form a swirling flow. The air circulated a plurality of times through the swirling flow in the cyclone body 310 should be discharged more smoothly through the discharge hole 510. Hereinafter, a structure for guiding the flow of air will be described.

As shown in FIGS. 2 and 4, the upper end of the casing 10 is configured to be opened and closed by the main cover 500. The main cover 500 includes a main body 502 that opens and closes an upper portion of the casing 10 and a main body 502 that is formed in a central portion of the main body 502 and forms a vent hole 510 between the main body 502 and the main body 502, And a head part 520 which is formed in a state in which the head part 520 is formed. The head 520 is formed into a circular shape when viewed from above, so that a plurality of the discharge holes 510 are formed in a circular shape.

In the main cover 500, an air guide portion 530 is formed at the bottom of the head portion 520 and integrally formed with the main body 502. The air guide portion 530 can be said to guide the airflow rising through the connection passage R into the inside of the cyclone body 310. [ Particularly, when the air flow rising through the connection passage R is guided to the inside of the cyclone body 310 without being climbed and climbed on the bottom surface of the main cover 500, Clone body < RTI ID = 0.0 > 310 < / RTI >

In order to guide the air, the air guide portion 530 has a substantially trumpet shape. By this streamlined connection curve, the air flow can be smoothly guided into the cyclone container 310 without generating vortex do. The lower end portion 532 of the air guide portion 530 preferably extends downward to have a lower position than the upper end portion 605 of the water pump 600 described later. By forming the air guide portion 530 in the shape of a trumpet tube, airflow rising through the connection passage R will be guided to the inside of the cyclone body.

Here, the above-mentioned air flow rising through the connecting passage R substantially forms a swirling flow (for example, a swirling flow in the counterclockwise direction when viewed from the top view). Therefore, it is a matter of course that the air flow flowing into the cyclone body 310 from the connection passage R also enters the swirling flow in the same manner. The swirling flow is guided by the air guide part 530. The guiding part 530 is provided with a plurality of guide ribs 530 for guiding the swirling flow into the inside of the cyclone body 310 while keeping the swirling flow in a more stable state, (See Fig. 5). The guide ribs 534 may be protruded downward along the same direction as the swirling flow so as to allow the swirling flow to flow into the inside of the cyclone body 310 while maintaining the swirling flow.

Next, a description will be given of the cyclone body 310 constituting the second filtering unit 300 and its internal configuration. As described above, it can be seen that the air flowing into the inside of the cyclone body 310 is a swirling flow. It is a matter of course that such a swirling flow flows into the inside of the cyclone body 310, and a swirling flow is formed continuously in the cyclone body 310. In the present invention, the cyclone body 310 is always supplied with water from the outside and always maintains a water level above a certain level during operation.

The cyclone body 310, which is the main constituent of the second filtering unit 300 in the present invention, has a function of again filtering (secondary filtering) the foreign substances contained in the air supplied to the room, And humidification function of including moisture in the air. As the swirling flow is formed inside the cyclone body 310 and water particles and air are brought into contact with a large number of times with as much time as possible while the water particles are scattered, The second filtering process is performed. The second filtering includes a deodorizing function for removing odors.

In order to efficiently perform such a function, a water pump 600 is installed inside the cyclone body 310. The water pump 600 performs an operation such as sprinkling or scattering the water inside the cyclone body 310 into the space inside the cyclone body 310 by rotation. That is, the water pump 600 supplies small particles of water, such as spraying or scattering, into the rotating air while forming a swirling flow inside the cyclone body 310, To be exposed.

As described above, the water pump 600 of the present invention can be said to perform operations such as spraying water into the air from the inside of the cyclone body 310 or scattering the water. The operation of the water pump 600 will be collectively referred to as the term " scattering water into the air " The particle size of the water in the cyclone body is not limited to the particle size of the water. For example, the water content in the cyclone body is not limited to the fine particle state such as mist, It is natural that the operation of scattering the water droplet into the air by applying an external force) is also included.

In the illustrated embodiment, the water pump 600 is rotatably supported on the bottom surface of the main cover 500 that opens and closes the opened upper surface of the casing body 20. [ That is, the upper end of the water pump 600 is rotatably supported on the bottom surface of the main cover 500. However, it is apparent that the support structure of the water pump 600 can not be limited by the illustrated embodiment. For example, the lower end of the water pump 600 may be simultaneously supported on the bottom surface of the cyclone body 310.

Accordingly, the water pump 600 may be configured such that the upper end thereof is rotatably supported by the main cover 500. The upper end of the water pump 600 is rotatably connected to the main cover 500, Or may be rotatably supported on an upper surface of the bottom surface of the base 510. In the latter case, the bottom surface of the water pump 600 may be rotatably supported via a separate member between the lower end of the water pump 600 and the bottom surface of the cyclone body.

Next, an inner structure and a supporting structure of the water pump 600 itself installed inside the cyclone body 310 will be described. The water pump 600 in the illustrated embodiment is constructed so that water droplets or small water particles can be scattered into the inside of the cyclone body 310 after the water is drawn upward by using the centrifugal force by rotation .

4 and 5, the water pump 600 is rotatably supported by the main cover 500. As shown in FIG. A rotary shaft 630 vertically disposed by a pair of bearings 622 and 624 having a predetermined gap therebetween is rotatably supported on a bottom surface of the head portion 520 occupying a central portion of the main cover 500. [ . The bearing support block 626 supporting the bearings 622 and 624 is preferably formed of a metal material or the like so as to provide sufficient support strength. The bearing support block 626 is supported at the bottom of the head portion 52 by a bearing housing 628 that can be fixed to the bottom surface of the head portion 520.

In this manner, a rotating body 634, which rotates together with the rotating shaft, is coupled to the lower end of the rotating shaft 630 rotatably supported at the lower center of the main cover 500. The rotating body 634 is integrally formed with a plurality of bridges 616 for connection with the water pump 600 or is integrated with the bridge by bolting or screw coupling or the like. The rotating body 634 is inserted into the lower end of the bearing housing to be rotatable and connected to the blade supporting tube 612 of the plurality of blades 610 so as to be rotatable.

A plurality of bridges 616 extending outward from the rotating body 634 and a plurality of blades 610 are provided at a lower end of the rotating shaft 630 Which are integrally molded or separately molded, joined, and assembled, so as to rotate together.

A water pump 600 is coupled to an outer end of the bridge 616. That is, it can be seen that the water pump 600 of the present invention is rotatably supported by the rotation shaft 630 rotatably supported by the bottom surface of the center portion of the main cover 500. The water pump 600, which is rotatably supported on the bottom surface of the head portion 520 of the main cover 500, can be formed into a cylindrical or inverted conical shape. In the illustrated embodiment, the water pump 600 has an inverted conical shape .

The water pump 600, which is shaped like an inverted conical shape, is expected to be more advantageous than the cylindrical shape in terms of minimizing the occurrence of vibration during rotation. In addition, the water pump 600 is formed in an inverted conical shape, and the water can be smoothly moved upward by virtue of centrifugal force based on rotation.

Next, another embodiment in which the water pump 600 is rotatably supported on the bottom surface of the main cover 500 will be described. The present embodiment is an embodiment in which the water pump 600 is detachably attached to the main cover 500 by the magnetic force generated by the magnet. In the following description of the embodiment, substantially the same components as those described above will be described with the same reference numerals.

7, a pair of bearings 622 and 624, which are vertically spaced apart from each other by a pair of bearings 622 and 624, vertically arranged on the bottom surface of the head portion 520 at the center of the main cover 500, Is rotatably supported. It is a matter of course that the rotation shaft 630 has a structure that does not fall down in a downward direction. For example, a head 634 supported by a bearing 622 is formed at the upper end.

The bearing support block 626 for supporting the bearings 622 and 624 and the bearings 622 and 624 is preferably formed of metal or the like in order to provide sufficient support strength. The bearing support block 626 is supported on the bottom of the head part 520 by a bearing housing 628 for example . The bearing support block 626 may be fixed to the bottom surface of the head portion 520 by using other fastening elements or the like.

The rotation shaft 630 extends downward, and then the nut 632 is stuck at the end portion to have a constant area. A magnet housing 642 having a magnet 640 embedded therein is detachably fixed to the lower side of the nut 632 by a magnetic force. The magnet housing 642 is hooked to a water pump 600 by a plurality of (for example, three) locking hooks 644 extending downward. The coupling hook 644 is elastically fastened to the coupling hole 656 shown in FIG. 8, so that the magnet housing 642 can be coupled to or separated from the interior of the water pump 600.

Therefore, the structure for assembling the water pump 600 to the central bottom of the main cover 500 in the present embodiment is summarized, so that the rotary shaft 630 is connected to the head portion 520 through the pair of bearings 622, And is rotatably supported on the bottom surface. A magnet housing 642 incorporating a magnet 640 is detachably attached to the bottom surface of the rotary shaft 630 by magnetic force and the magnet housing 642 is detachably connected to the water pump 600.

Here, the lower end of the rotating shaft 630, which is a magnetic body, has a sufficient area through which the nut 632 reacts to the magnetic force. It is of course possible to further interpose a metal plate of a flat plate capable of covering the entire bottom surface of the nut 632. [ It is a matter of course that many other modifications are possible in the structure in which the magnet housing 642 and the water pump 600 are connected to each other so that they can be disassembled and assembled with each other.

In the water pump 600 of the present invention, an upper end portion is opened to allow air to pass therethrough. That is, the secondary filtered air inside the cyclone body 310 is discharged to the outside through the discharge hole 510 of the main cover 500. The upper end of the water pump 600 is preferably formed in an open state in order to allow air to escape through the discharge hole 510. The discharge of the air will be smooth as in the case of the open portion 604 as described later.

In the illustrated embodiment, the water pump 600 includes an inverted conical sidewall portion 602 and a plurality of open portions 604 formed between the sidewalls. Preferably, the open portion 604 is shaped relative to the overall height of the water pump 600. The lower end of the water pump 600 should be shaped so that water can flow inward.

A plurality of water guiding grooves 606 are vertically formed inside the side wall portion 602 of the water pump 600. This water guiding groove 606 is for pumping the water upward in the bottom surface of the cyclone body using centrifugal force substantially during rotation. It is also possible to replace the water guide groove 606 in the illustrated embodiment with a wall (or rib) having a constant height extending in the up-and-down direction, and the concave portion between the wall and the wall And will correspond to the water guide groove 606 in the illustrated embodiment.

The water guide groove 606 may have any shape as long as it can substantially rise upward along the inside of the water guide groove 606. It is obvious that the water guide groove 606 can not be limited to the vertical groove as shown in the drawing. The open portion 604 formed in the side wall portion 602 is formed so as to have a constant inclination with respect to a vertical line as shown in the drawing. Therefore, the uppermost portion of the water guide groove 606 is opened (opened state) along the inclined open portion 604, which can be referred to as an outlet 608.

That is, the water guide grooves 606 described above extend continuously upward in the direction of a predetermined distance, and an outlet 608 is formed in the open portion 604. [ Further, since the open portion 604 is formed in an inclined state having a constant inclination, a plurality of openings of the water guide groove 606 are formed in the upper and lower portions of the inside of the cyclone body 30. That is, the outlet 608 of the water guide groove 606 is continuously formed from the lowest part to the highest part of the open part 604, and the water particles are uniformly and uniformly distributed in the air Sprayed or scattered.

The lower end 620 of the water pump 600 is immersed in the water contained in the cyclone body 310. As described above, the lower end 620 of the water pump 600 has a shape in which water is at least partially opened to allow the water to enter the inside thereof. The water guide groove 606 formed on the inner surface of the water pump 600 is extended to the lower end of the water pump 600. Accordingly, when the water pump 600 rotates, the water inside the cyclone body 310 rises along the water guide groove 606 by the centrifugal force generated by the rotation. And the water rising along the water guide groove 606 will be ejected or scattered out through its outlet 608 which is molded into the open portion 604. [

At this time, since the open portion 604 is formed with a predetermined inclination with respect to the entire height or in the vertical direction, and the water guide grooves 606 are formed in a plurality of the water guide grooves 606 at regular intervals, Over the entire height of the pump 600, water will be scattered out through the open portion 604. This splashing of water can be said to mean that in the substantially inside of the cyclone body 310, water is evenly scattered with respect to the whole height.

Since the water pump 600 of the present invention has an inverted conical shape, the upper and lower portions of the water guide groove 606 are limited in area. Therefore, as can be seen from Fig. 7, the number of the water guide grooves 606 in the upper portion 600U and the lower portion 600L of the water pump 600 is different. That is, since the lower portion 600L of the water pump 600 has a substantially small surface area, a large number of water guiding grooves can not be formed. However, if the water guide groove is formed on the basis of the lower portion 600L of the water pump 600, the water guide groove may be formed in a short distance, which may make it difficult to uniformly disperse sufficient water particles over and under the cyclone body 310 .

Accordingly, as shown in FIG. 8, water is boiled at a predetermined height through the water guide groove 606 of the lower portion 600L, and water is temporarily supplied to the low water groove 650 formed with respect to the entire inner diameter at the position It is also preferable to configure it to store. That is, water is raised from the lower portion 600L of the water pump 600 by the rotation of the water pump 600 and temporarily stays in the low water groove 650, It means that it will become over the whole.

If the low water groove 650 is to be formed on the inner side of the water pump 600 as in the illustrated embodiment but it is difficult to form the groove in relation to the mold, the portion corresponding to the low water groove 650 It is also preferable to form the low water groove 650 as shown in the drawing by engaging a ring band 653 which is made to pass through the inside and the outside and made of synthetic resin or an elastic material such as rubber.

The water in the low water groove 650 rises along the water guide groove 606 in the upper portion 600U of the water pump 600 in accordance with the rotation. Since the water guide groove 606 on the upper part of the water pump 600 is formed in a larger number than the lower part 600L, the water scattered through the outlet 608, which is ultimately formed in the open part 604, It is expected that it will be uniformly distributed across small particles as possible.

The water pump 600 according to the present invention is most preferably formed integrally with the water pump 600 by injection molding at one time. However, when the water pump 600 can not be limited by the integral injection, It is natural that it is also possible to complete the water pump 600.

According to the present invention, the cyclone body 310 is formed of a viewable synthetic resin material, and is formed into a synthetic resin material that can be seen through the upper portion of the casing 10 where the cyclone body 310 is located. Or it is of course possible to form a separate window in such a part. Therefore, the water scattered inside the cyclone body 310 by the rotation of the water pump 600 will be visually recognizable from the outside. That is, the air purifier according to the present invention exposes water to the inside of the cyclone body 310, and at the same time, the formation of a swirling flow is exposed to the outside. This will allow users to visually recognize the effects of air purification and humidification on the user.

According to the present invention, the air flow entering the inside of the cyclone body 310 is the swirl flow introduced through the above-described connection passage R as described above. The water pump 600 is rotated so that the water inside the cyclone body is scattered so that the air cleaner of the present invention can operate .

It is needless to say that various modifications are possible in the configuration for rotating the water pump 600. It is also possible to rotate the water pump 600 using a small motor mounted on the head 520 of the main cover 500, for example. The flow of the air that flows into the cyclone vessel 310 through the connection passage R and is discharged through the discharge hole 510 inside the cyclone vessel 310 And the water pump 600 may be rotated using the water pump 600.

Hereinafter, an embodiment in which the water pump 600 is rotated using the air flow will be described in detail. The air flow guided to the inside of the cyclone body 310 flows in a state of forming a swirling flow, and this swirling flow is formed substantially along a portion close to the inner side of the cyclone body 310. In addition, since the center hole of the main cover 500 has a circular exhaust hole 510, air circulated by the cyclone principle is discharged to the outside through the exhaust hole 510.

Since the discharge hole 510 is formed at the central portion of the cyclone body 310, a rising airflow is formed at the inner center portion of the cyclone body 310. In other words, the flow of air inside the cyclone body 310 is formed at the outer portion near the inner surface of the cyclone body 310, and at the center portion of the cyclone body 310, And the air discharged to the outside through the hole 510 forms an upward flow.

And a plurality of blades 610 formed on the outer surface of the rotating shaft 630. And is formed in such a direction as to rotate the blade supporting tube 612 in the same direction as the swirling flow formed inside the cyclone body 310 in contact with the ascending air flow. Accordingly, when the airflow rising from the center of the inside of the cyclone body 310 collides with the blade 612, the blade support tube 612 is rotated in a counterclockwise direction (as viewed in a plan view). The rotation of the blade and the blade supporting tube 612 substantially rotates the water pump 600 in the same direction through the bridge 616.

In the illustrated embodiment, the swirling flow introduced into the cyclone body 310 forms a rising air flow in the central portion of the cyclone body 310, and the rising air stream is discharged through the exhaust hole 510. Here, it is understood that the ascending air flow immediately before being discharged through the discharge hole 510 is configured to contact the blade 610 to rotate the blade supporting tube 612. And the rotation of the blade support tube 612 causes the water pump 600 to rotate in the same direction through the bridge 616.

In this embodiment, it is understood that the rotation of the water pump 600 is caused by the flow of air entering through the inlet 12 by the fan motor assembly 400. The rotation of the water pump 400 by the air flow generated by the fan motor assembly 400 may have various advantages that do not require a separate motor for rotating the water pump 400. [ . As described above, the rotation of the water pump 400 splashes water particles by applying an external force to the water held in the cyclone body 310, as described above.

It can be understood that the water pump 600 according to the present invention is to substantially apply an external force to the water inside the cyclone body 310 to disperse the water into the inside of the cyclone body 310 as water particles. It will also be appreciated that the plurality of blades 610 are powered by the air flow inside the cyclone body to rotate the water pump 600.

The blade 610 of the present invention may be variously modified within a range for rotating the water pump 600. 1 to 5 and described above, the blade 610 is formed on the outer side of the rotating body 634 connected to the rotating shaft 630 to rotate, Which means it is in the middle. The blade 610 rotates the water pump 600 in response to the airflow rising from the inner center of the cyclone body 310.

As another embodiment of such a blade 610, it is also possible to form the upper part of the side wall part 602 of the water pump 600 so as to have the same shape on the upper part. The plurality of blades 610 are provided on the inner side of the side wall portion 602 in such a manner that they can be integrally formed by injection molding such as a water pump or integrally formed by bonding them separately. When the blade 610 is formed on the inner side surface of the side wall portion 602 as described above, the water pump 600 rotates in contact with the airflow rising inside the cyclone body 310 Will be.

As another embodiment of such a blade 610, a plurality of blades 610 may be formed on the outer surface of the side wall portion 602 of the water pump 600. When the blade 610 is formed on the outer surface of the side wall portion 602 as described above, the water pump 600 can be rotated by contacting the air flowing into the inside of the cyclone body 310. For example, when the swirling flow enters the connecting passage R through the entire upper open portion of the cyclone body, the air flow comes into contact with the blade 610 at the upstream portion of the inlet, It is also possible to rotate the pump in a desired direction.

Or the air introduced through the connecting passage R is introduced through the side wall portion of the upper portion of the cyclone body 310 to generate the swirling flow, It is also possible to configure the water pump 600 to rotate by exposing a plurality of blades 610 to such airflow and receiving wind pressure.

As another embodiment of the blade of the present invention, it is also possible to provide a ring member or the like which entirely connects the upper end of the side wall portion, and form a blade on the outside. That is, it means that a plurality of blades 610 are installed or molded at the upper end portion of the outer side of the blade, but are installed with other members interposed therebetween. Even in this case, the blade will be subjected to the force of the air flow flowing into the inside of the cyclone body 310 to rotate the water pump.

1, the casing 10 of the air cleaner is formed with a window 18 for communicating the inside and the outside of the casing. This window 18 is configured to be openable and closable by the mode change door 700. Any structure may be used for the structure for opening and closing the window 18 by the mode change door 700. [

For example, the user can manually open and close the mode change door 700, and it is also possible to open and close the mode change door 700 using the driving force of the motor. In addition, the mode change door 700 may be configured to be opened and closed by a sliding door, and may be configured to be opened and closed by a hinged door. As for the open / close structure of the mode change door 700, any known structure may be used.

Next, an exemplary configuration for opening and closing the mode change door 18 will be described with reference to FIGS. 9 and 10. FIG. Referring to FIG. 9, a guide protrusion 702 is formed at the upper and lower ends of the right end of the door 700 to guide a trajectory of the door 700 when the door 700 is moved. The guide protrusion 702 is inserted into a guide path 708 which is formed on the inner surface of the casing 10.

The guide protrusion 702 and the guide path 708 are formed on the upper and lower sides, respectively, and have the same shape. The guiding path 708 includes an inclined guide path 708a inclined inward so that the door 700 can be further guided inward from the surface of the casing 10, 10 and a circumferential guide path 708b that moves along the circumferential surface of the cylindrical guide path 708b.

Therefore, the door 700, which opens and closes the window 18, moves inward in the circumferential direction on the inner surface of the casing at the time of the first movement (the inclined movement will be more apparent in the plan view) 10 in the direction along the inner circumferential surface. This movement of the door 700 is naturally a movement based on the movement of the guide projection 702 along the guide path 708 to the right in the drawing.

Next, a configuration for pulling the door 700 to the right will be described with reference to FIGS. 9 and 10. FIG. The door 700 is connected to the movable rail 720 through a connecting portion 710 extending in the opening direction of the door 700. The connecting portion 710 and the moving rail 720 are connected to each other by a pin (pa) so that they can move joints. It is, of course, also possible that the moving rail 720 is directly connected to one side of the door 700. The reason why the pin 10 is rotatably connected using the pin pa is that the casing 10 has a circular cross section as a whole.

The movement rail 720 is guided by a guide rail 730 fixed to an inner surface of the casing 10. Accordingly, the movable rail 72 is moved to the right along the path guided by the guide rail 730. The intermediate portion of the movable rail 720 is connected to the upper portion of the interlocking lever 746 by a pin. The pin for this connection is preferably fixed to the movable rail 720 and the hole 746a formed in the upper end of the interlocking lever 746 is inserted into the hole 746 so that the pin pc is inserted, It is preferable to form it into a long hole having a large diameter.

The configuration of the pin pa and the pin pc and the long hole 746a substantially takes into consideration the structure in which the door 700 needs to move along the inside of the arc-shaped casing 10 . The interlocking lever 746 is rotatably supported on an inner surface of the casing or a support portion 748 supported on the inner side of the casing. In addition, an arc-shaped rack portion 744 is formed in the lower portion of the interlocking lever 746.

The tooth formed on the upper surface of the rack portion 744 formed at the lower end of the interlocking lever 746 is engaged with the pinion 742. Here, the pinion 742 is rotated by a drive motor (not shown). Therefore, by the forward rotation or the reverse rotation of the pinion 742, the interlocking lever 746 can be rotated in the counterclockwise direction counterclockwise around the pin pb in the counterclockwise direction through the rack portion 744 Do.

When the interlocking lever 746 rotates clockwise about the pin Pb, which is a connecting portion or a pivotal support portion, the movable rail 720 is guided by the guide rail 730 fixed to the inside of the casing, And moves to the right side in the drawing. The movement of the moving rail 720 will move the door 700 to the right through the connecting portion 710 which is substantially connected via the pin pa to open the window 18. When the pinion 742 rotates in the opposite direction at a constant number of revolutions, an operation in the opposite direction to that described above will occur and the mode change door 700 will close the window 18.

2, the position where the window 18 and the mode change door 700 are installed is a portion where the connection passage R is formed. That is, when the mode change door 700 is opened, the connection passage R communicates with the outside. When the mode change door 700 is opened, the air in the connection passage R escapes to the outside. Thus, when the air flow inside the connection passage R escapes to the outside through the window 18, the air does not substantially rise to the upper portion of the connection passage R. [

2, when the window 18 is formed in a region including a portion where the fan motor assembly 400 is installed, the air flow that the fan motor assembly 400 pushes radially outward And then exits directly to the outside of the casing 10 through the window 18.

When air can not be raised to the upper portion of the connection passage (R), the air flowing into the inside of the cyclone body (310) substantially disappears. Therefore, the operation of the second filtering unit 300 becomes impossible. That is, when the door 700 is opened, only the first filtering unit 200 is operated. In this case, only the air filtering is performed by operating only the HEPA filter 210.

When the door 700 is closed, the wind generated from the fan motor assembly 400 rises in a swirling flow along the connection passage R and flows into the inside of the cyclone body 310. In the inside of the cyclone body 310, the above-described removal of foreign matter and humidification of the discharged air will be performed. The mode in which the second filtering unit 300 is driven in the same manner may be regarded as substantially the air filtering and humidifying mode.

Hereinafter, the overall operation of the air purifier of the present invention will be described. First, when the air cleaner of the present invention is operated, the fan motor assembly 400 is driven, and the air outside the casing 10 flows into the interior of the casing 10 through the inlet 12. Air introduced into the casing 10 from the outside (indoor) passes through the filter 210. In this process, impurities are primarily filtered. That is, the HEPA filter 210 constituting the first filtering unit 200 primarily removes impurities, and the filter 210 can be selected to have a desired specification and function. same. For example, it is possible to include not only a foreign substance such as fine dust but also a filter capable of removing odors, so that the effect of removing the odor by the filter 210 can also be expected.

In the embodiment shown in FIG. 1, the filter 210 is formed of a cylindrical filter, and the fan 420 is a centrifugal fan. However, the present invention is not limited to this configuration, Do. It is sufficient that the fan 420 forms an air flow so that the outside air can pass through the filter 210 while introducing the outside air through the inlet 12. [

The air that has passed through the filter 210 is moved in the radial direction by the fan 420, which means that the air flow flows radially toward the inner portion of the casing 10. The flow of the air generated by the fan 420 flows to the above-described connection passage R. At this time, the flow of the air flowing into the connection passage R by the rotating fan 420 forms a swirling flow This air flow direction is shown in detail in Fig.

Since the upper surface of the connecting path R is clogged by the main cover 500, the upper part of the air flow flows into the opened cyclone body 310. The air introduced into the cyclone body 310 will also maintain the swirling flow. In this process, the air guide portion 530 formed in the main cover 500 and the guide ribs 534 It is natural to receive.

The air flow flowing into the inside of the cyclone body in this manner forms a swirling flow inside the cyclone body 310 at the edge portion and an upward flow at the center portion where the discharge hole 510 is located. When such a flow is formed, the process of filtering the foreign matter and humidifying the air proceeds substantially inside the cyclone body 310, and the details are as described above. As described above, the air rising at the center of the cyclone body 310 applies wind pressure to the blade 610 and substantially rotates the water pump 600.

The water inside the cyclone body 310 is accumulated in the lower end portion 620 of the water pump 600. The water contained in the lower end 620 of the water pump 600 inside the cyclone body 310 is discharged to the water pump 600 by the centrifugal force, And moves upward along the water guide groove 606 formed in the side wall portion 602 of the lower end portion 620.

According to the present invention, since the water pump 600 has an inverted conical shape and is rotated by a rotary shaft rotatably supported by a pair of bearings 622 and 624 spaced at regular intervals, It is expected that the occurrence of vibration caused by vibration can be minimized.

The water that moves along the water guide groove 606 is scattered to the outside through the plurality of outlets 608 of the water guide groove 606 formed in the open portion 604. [ The outlet of the water guide groove 606 is formed at regular intervals from the lower end portion to the upper end portion and the open portion 604 is formed with an inclination so that the water can be uniformly scattered outward as a whole.

The lower water groove 650 formed in the inner surface between the upper portion 600U and the lower portion 600L of the water pump 600 substantially reduces the number of water guide grooves in the upper portion 600U of the water pump 600, It is expected that more homogeneous and smaller particleized water can be scattered in the cyclone through the upper and lower portions 606. [

Since the cyclone body 310 and the corresponding casing 10 are formed of a material capable of penetrating the inside of the cyclone body 310, water scattered inside the cyclone body 310 can be recognized by the user directly Will be. The fact that the state in which water is scattered can be visually confirmed means that the air purifier of the present invention is practically operative and that a sufficient humidifying effect can be recognized by the user.

In the present state, water is scattered in the cyclone body 310 while the water pump 600 rotates, and a swirling flow is being formed in the cyclone body 310 have. When the water is scattered toward the swirling flow in a state where the swirling flow is formed inside the cyclone body 310, the water particles that are scattered are exposed to the rotating air substantially repeatedly. In addition, the air circulates in the cyclone body 310 repeatedly a plurality of times and then rises at the central portion. The water particles scattered by the water pump 600 substantially repeat the water several times, .

The fact that the scattered water droplets are exposed to the swirling flow repeating at least a plurality of times substantially means that the contact surface area between the air introduced through the inlet 35 and the water droplets scattered through the water pump 600 is sufficiently secured do. The fact that the surface area of contact between the water droplets scattered and the air is wide means that the foreign matter contained in the air is substantially trapped in water by the surface tension and the suction force.

Also, the fact that the contact surface area between the water droplet to be scattered and the air is large means that the amount of water vaporized by the contact with air substantially increases. Furthermore, the contact of air with fine water particles for a sufficient time means that odor particles contained in the air can be trapped to sufficiently deodorize the air.

As described above, according to the present invention, a swirling flow is formed inside a cyclone body, and water droplets are scattered in such a swirling flow, whereby the ability to collect foreign matter (including odor particles) contained in water is excellent, As shown in FIG. That is, the cyclone body 310 constituting the second filtering unit 300 is configured such that water particles sufficiently contact with the swirling flow to collect foreign substances in the air, and at the same time, air It can be seen that it is sufficiently humidified.

If the water droplets are scattered and the swirling flow of the swirling flow is continuously repeated, the relatively heavy water particles in the cyclone body 310 sink downward as foreign matter, and the relatively light water particles are discharged into the cyclone body 310 to the interior (exterior) through the open middle central portion outlet 38. And it can be said that the discharged air can provide substantially sufficient humidification amount, and it is natural that the foreign matter is purified air sufficiently filtered.

The foreign matter collected in the water particles circulating inside the cyclone body 310 falls back to the bottom of the cyclone body 310 as described above. (For example, a UV lamp) having sterilizing function may be installed in the interior of the cyclone body 310, more preferably, at the lower end of the cyclone body 310 in order to sterilize the foreign object It will be possible.

The main cover 500 is detachably detachable from the casing 10 and the cyclone body 310 is detachable from the casing 10. Thus, it becomes possible to very easily clean the cyclone body 310 which is to contain water substantially, so that the problem of air humidified by the contamination of the cyclone body can not occur.

The air in the inner center of the cyclone body 310 follows the upward flow and is discharged to the outside through the discharge hole 510 of the main cover 500. As described above, the air that ascends to be discharged in this manner acts as a driving force for rotating the water pump 600 in contact with the blade 610. By repeating such operations, air inside the cyclone body 310 The removal of the foreign matter contained in the air and the sufficient humidification of the air may proceed.

The mode in which the first filtering unit 200 and the second filtering unit 300 operate at the same time is a mode in which air purification and humidification are simultaneously performed. In this state, when the door 700 outside the casing 10 is opened, the air in the connection passage R escapes through the window 18 to the outside. Therefore, it can be said that the air flow flowing into the inside of the cyclone body 310 is eliminated.

In this case, purified air using only the HEPA filter 210 constituting the first filtering unit 200 is discharged to the room through the window 18. Therefore, this state can be regarded as an air purifying mode by the first filtering unit. Here, the door 700 may be manually opened by a user, or may be opened by a motor through the exemplary structure as described above.

In the following, another variant embodiment will be described within the technical scope of the present invention. In the embodiment illustrated and described, since the fan 420 rotates the air in a radial direction, a swirling flow is formed in the connection passage R, and the swirling flow is directly transmitted to the inside of the cyclone body 310 As shown in FIG.

However, it is sufficient that the fan 420 has a function of allowing the outside air to flow into the casing 10 and primarily to remove the foreign matter by passing the filter 210 through the process. The air flow generated in the fan 420 may be introduced into the cyclone through another passage to generate a swirling flow.

That is, when the air flow generated in the fan 420 is introduced into the inside of the cyclone body 310, air is blown into the cyclone body 310 at an eccentric position, , It is natural that the foreign matter can be removed by the same cyclone principle as described above, and that the exhausted air can be humidified by contact with the scattered water.

In the embodiment described above, the water pump is rotated by using the swirling flow inside the cyclone body. However, it is needless to say that many other modifications are possible in the configuration of rotating the water pump 600 in order to scatter the water inside the cyclone body 310. For example, it is also possible to provide a motor at the bottom of the head portion of the main cover 500, and rotate the water pump using such a motor.

In the embodiment described above, when the upper part of the cyclone body is opened and the air flow rising through the connection space R is clogged by the main cover, the inside of the cyclone body through the opened upper part of the cyclone body As shown in FIG. However, it is natural that the cyclone body is capable of various changes within the range in which the air flowing into the inside can be accepted while maintaining the swirling flow.

For example, by forming an inlet through which the swirling flow in the connection passage R can be introduced into the upper end side wall of the cyclone body, the air flow of the connection passage R forming the swirling flow can be directly introduced into the cyclone It may be configured to be introduced into the inside of the body. In this case, the upper part of the cyclone body may be configured to be opened or closed by a separate cover, or may be formed in an open state, but close to the bottom surface of the main cover 500.

In the above-described embodiment, as described above, the plurality of blades 610 rotates the water pump in response to the pressure of the airflow discharged to the discharge hole 510. [ That is, in the present invention, the blade 610 is for ultimately rotating the water pump, and it is a basic idea to use the wind generated from the fan 420 as one driving source.

Therefore, in the present invention, it can be seen that the blade 610 is provided in the water pump and is sufficient to rotate the water pump in response to the air flow. In order to rotate the water pump in response to the air flow flowing into the inside of the cyclone body 310, the side wall portion 602 is provided with a plurality of It is also possible to form it on the outer side, more preferably on the upper side into which the wind flows. Or if the water pump can be rotated in response to the air flow, its installation position can not be limited.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims. It is also obvious that it is obvious.

10 ..... casing
12 ..... entrance
Exit 14 .....
200 ..... first filtering unit
300 ..... second filtering unit
310 ..... Cyclone body
400 ..... Fan motor assembly
410 ..... motor section
420 ..... fan
440 ..... Airflow housing
442 ..... internal pipe
444 ..... outer tube
500 ..... main cover
510 ..... Exhaust hole
600 .... water pump
602 ..... side wall portion
604 ..... open part
605 ..... upper part
606 ..... water guide home
Exit 608 .....
610 ..... blades
612 ..... blade support tube
616 ..... Bridge
622, 624 ..... Bearings
628 ..... Bearing Support Housing
626 ..... Bearing Support Block
630 ..... rotation shaft
700 ..... Mode change door
710 ..... connection
720 .... moving rail
730 ..... guide rail
742 ..... pinion
744 ..... rack part
746 ..... Interlock lever

Claims (10)

A casing having an inlet through which air flows and an outlet through which air is discharged;
An air flow generating means installed in the casing for generating air flow for introducing air through an inlet and discharging air through an outlet;
First filtering means for firstly filtering outside air flowing through the inlet;
First filtering means for secondarily filtering air primarily filtered by the first filtering means;
A connection passage inside the casing for connecting the first filtering means and the second filtering means;
A window formed in the connection passage for communicating the inside and the outside;
A mode determination door for opening and closing the window; And
And door driving means for moving the door to a position where the door can open and close, respectively;
The first filtering means and the second filtering means are operable in a state where the window is closed and the air in the connection passage escapes to the outside when the window is opened so that only the first filtering means is operable;
Wherein the window and the mode change door are provided in a casing at a position including a height at which the air flow generating means is installed.
2. The air purifier of claim 1, wherein the second filtering means comprises a humidifying function.
3. The air purifier according to claim 2, wherein the air flow generating means is provided between a first filtering means provided in a lower portion in a casing and a second filtering means provided in an upper portion in a casing.
The air purifier according to claim 3, wherein the connection passage is formed into a ring-shaped passage having a constant height from the inside of a casing having a circular cross section.
The air purifier according to claim 4, wherein the air flow generating means generates air flow directed from the inside to the outside, and the air rising inside the connecting passage forms a swirling flow having a helical rotation.
delete 6. The door driving device according to any one of claims 1 to 5,
A door guiding means for guiding the door to a predetermined path;
And a moving means capable of reciprocating the door in a path guided by the door guiding means by the rotational force of the driving motor.
8. The door locking device according to claim 7,
A pair of guide protrusions formed at the upper and lower ends of the front of the door and a pair of guide paths vertically formed inside the casing so that the pair of guide protrusions can be respectively inserted and guided.
9. The apparatus according to claim 8,
A moving rail which is connected to the door in a moving direction by a pin,
And an interlocking lever having an upper end connected to the moving rail and a lower portion provided with a rack portion engaging with a pinion rotated by a driving motor and rotatably supported inside the casing.
9. The apparatus according to claim 8,
A moving rail which is connected to the door in a moving direction by a pin,
And converting means for converting rotational motion generated in the motor into lateral movement of the moving rail.

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