KR20190143439A - Apparatus for both humidification and air cleaning - Google Patents

Abstract

According to an embodiment of the present invention, a humidifying air purifier can comprise: a cabinet of which an opening part is formed on an upper portion; and a scroll housing disposed on a lower side of the opening part in the cabinet, and having a blowing fan therein. The scroll housing can comprise: a flow guide wall formed to be rounded to cover a portion of the external circumference of the blowing fan; an extension guide wall extending toward the opening part from one end portion of the flow guide wall; a discharge guide wall extending toward the opening part from a cut-off part formed in the other end portion of the flow guide wall and inclined in the direction spaced apart from the extension guide wall as the discharge guide wall is close to the opening part; and an extension plate horizontally extending in the direction spaced apart from the extension guide wall at an upper end portion of the discharge guide wall and located on a lower side of the opening part.

Description

Humidification Air Cleaner {Apparatus for both humidification and air cleaning}

The present invention relates to a humidified air purifier.

An air purifier is understood as a device for inhaling and purifying contaminated air and then discharging the purified air. For example, the air purifier may include a blower for introducing external air into the air cleaner and a filter capable of filtering dust or bacteria in the air.

Humidifiers are understood as devices that inhale, humidify, and then discharge air to provide moisture to the air. Conventional humidifiers are classified into a vibrating type that atomizes water in the diaphragm and discharges it into the air, and a natural evaporating type that evaporates in the humidification filter. The spontaneous evaporative humidifier is a humidifier filter humidifier that rotates the disc by using a driving force, the disc humidifier spontaneously evaporates water on the surface of the disc in the air, and the evaporator spontaneously evaporated by the air flowing in the humidifying medium wet water Are distinguished.

In recent years, humidifying air purifiers having a humidifying function added to an air purifier have been developed. In the humidifying air cleaning apparatus disclosed in the prior document JP 2011-226670A (published on November 10, 2011), an intake port through which air is sucked is located between the main body and the front panel, and a discharge port through which humidified air is discharged is positioned on the upper surface of the main body.

However, in the case of the humidifying air cleaning apparatus disclosed in the prior document JP 2011-226670A, there are the following problems.

Since the suction port is formed at the top, bottom, left, and right edges of the front panel, the air sucked in different directions may interfere with each other, and thus the flow of the air sucked into the main body may not be smooth.

In addition, the suction port may damage the appearance of the humidifying air cleaning device.

In addition, since there is no structure for guiding the air blown by the blowing means to the upper side, only a part of the air blown by the blowing means is discharged to the upper discharge port, and the other part is stagnated in the main body, thereby reducing efficiency.

In addition, since the discharge opening is opened during the operation of the humidifying air cleaning device, large foreign matter may enter the discharge opening. In addition, when the user's body enters, there is a risk of injury by the rotating blowing means.

In addition, a vane for adjusting the discharge angle of the humidifying air is disposed at the discharge port, but when the vane is flipped backward, the wall located behind the humidifying air cleaning device is moistened by the humidifying air discharged to the discharge port, causing mold or the like. have.

In addition, when the humidifying air cleaning device is placed next to the bed, the humidifying air of the discharge port is discharged directly toward the user's face or head may cause discomfort to the user.

JP 2011-226670A (released November 10, 2011)

The problem to be solved by the present invention is to provide a humidified air purifier in which the discharge direction of the humidified air discharged from the discharge unit is suitable for the indoor use environment.

The humidifying air purifier according to the present embodiment may include a discharge grille having a plurality of grill guide portions formed obliquely in a direction toward the front toward the upper side and covering the discharge portion from the upper side. Therefore, since the air discharged from the discharge portion is guided to the front upper side by the plurality of grill guide portions, it is possible to prevent the wall located behind the humidified air cleaner from being wet. In addition, it is possible to prevent foreign substances of a predetermined size or more from flowing into the discharge unit.

In addition, the depression is located between the base and the lower end of the door assembly, the suction portion may be located above the depression and formed on the bottom of the door assembly. As a result, since the suction part is not visible to the user, the appearance of the humidified air cleaner may be improved aesthetically. In addition, the indoor air can be smoothly sucked into the cabinet through the depression and the suction.

In more detail, the humidifying air purifier according to the present embodiment includes a cabinet including a base, a pair of side panels provided on both sides of the base, and a top panel and a rear panel connecting the pair of side panels, respectively; A door assembly removably coupled to the front of the cabinet and spaced upwardly with respect to the base; A recess located between the bottom end of the door assembly and the base and recessed rearwardly; A suction part disposed on an upper side of the depression part and formed on a bottom surface of the door assembly and communicating with an interior of the cabinet; A humidification filter disposed inside the cabinet; A discharge part disposed at a rear side of the upper panel and discharging air passing through the humidification filter; And a discharge grille having a plurality of grill guide portions formed obliquely in a direction toward the front toward the upper side and covering the discharge portion from the upper side.

In addition, the plurality of grill guide parts may be spaced apart from each other in the front and rear direction and maintain a constant angle with respect to the virtual vertical line. As a result, the air can be constantly discharged to the front upper side constantly to prevent the wall located in the rear of the humidifying air cleaner to be wet.

In addition, an upper portion of the rear panel may be bent to form an upper surface portion extending forward, and the discharge portion may be formed to penetrate up and down the upper surface portion of the rear panel. As a result, the discharge part is located at the rear of the upper panel, and the upper part of the rear panel can be easily connected to the upper panel.

In addition, the upper surface portion of the rear panel, recessed downward may be formed with a grill installation groove on which the discharge grill is seated. As a result, the discharge grill may be stably seated in the grill installation groove.

On the other hand, the humidifying air purifier according to the present embodiment, the opening portion including the discharge portion is formed in the upper portion of the cabinet, a scroll housing having a blowing fan therein may be located below the opening portion. As a result, since the humidifying air blown by the blower fan can be guided to the opening part by minimizing the loss of flow by the scroll housing, the efficiency of the blower fan can be increased.

In addition, the extension guide wall is formed long in the vertical direction and the discharge guide wall may be formed to be inclined in the direction away from the discharge guide wall toward the upper side. In this case, the horizontal distance between the upper end of the discharge guide wall and the other side panel may be longer than the horizontal distance between the upper end of the extension guide wall and the one side panel. By the above configuration, the inclination of the discharge guide wall can be closer to the vertical than the horizontal, and the air flow guided by the discharge guide wall can be prevented from being discharged to the horizontal in the horizontal direction.

In more detail, the humidifier air purifier according to the present embodiment includes a cabinet including a base, a pair of side panels provided on both sides of the base, and a top panel and a rear panel connecting the pair of side panels, respectively. ; An opening formed at an upper portion of the cabinet; And a scroll housing disposed below the opening in the cabinet and having a blowing fan therein. The scroll housing may include a flow guide wall rounded to surround a portion of an outer circumference of the blowing fan; An extended guide wall positioned closer to one side panel of the pair of side panels and extending upward from one end of the flow guide wall; Located near the other side panel of the pair of side panels, it may include a discharge guide wall extending inclined away from the extension guide wall toward the upper side from the cut-off portion formed at the other end of the flow guide wall. The horizontal distance between the upper end of the discharge guide wall and the other side panel may be farther than the horizontal distance between the upper end of the extension guide wall and the one side panel.

In addition, an upper end of the discharge guide wall may overlap the flow guide wall in the vertical direction. As a result, the inclination of the discharge guide wall can be closer to the vertical than the horizontal, and the air flow guided by the discharge guide wall can be prevented from being discharged to the horizontal in the horizontal direction.

In addition, an upper portion of the rear panel may be bent to form an upper surface portion extending forward, and the opening portion may be formed to penetrate up and down the upper surface portion of the rear panel.

The scroll housing may further include an extension plate extending horizontally from the upper end of the discharge guide wall toward the other side panel.

The opening may further include: a discharge part facing a space between the extension guide wall and the discharge side wall in a vertical direction; And a non-ejection unit facing the extension plate in a vertical direction.

In addition, an area of the discharge part may be larger than an area of the non-ejection part.

The apparatus may further include a discharge grille having a plurality of grill guide portions formed obliquely in a direction toward the front toward the upper side and covering the openings from the upper side.

In addition, the plurality of grill guide parts may be spaced apart from each other in the front and rear direction and maintain a constant angle with respect to the virtual vertical line.

In addition, some of the discharge grille may cover the discharge part and others may cover the non-discharge part.

In addition, the extension plate may be formed with a step rib for supporting the discharge grill.

Meanwhile, the humidifying air purifier according to the present embodiment may include a scroll housing including an extension plate extending horizontally in a direction away from the extension guide wall at an upper end of the discharge guide wall and positioned below the opening. As a result, the inclination of the discharge guide wall can be closer to vertical than horizontal, and it is possible to prevent the air flow guided by the discharge guide wall from being discharged almost horizontally in the horizontal direction.

In more detail, the humidifying air purifier according to the present embodiment includes a cabinet having an opening formed thereon; And a scroll housing disposed below the opening in the cabinet and having a blowing fan therein. The scroll housing may include a flow guide wall rounded to surround a portion of an outer circumference of the blowing fan; An extension guide wall extending toward the opening at one end of the flow guide wall; A discharge guide wall extending from the cutoff portion formed at the other end of the flow guide wall toward the opening and inclined away from the extension guide wall as the opening is closer to the opening; And an extension plate extending horizontally from an upper end of the discharge guide wall in a direction away from the extension guide wall and positioned below the opening.

The apparatus may further include a discharge grille having a plurality of grill guide portions formed obliquely in a direction toward the front toward the upper side and covering the openings from the upper side.

A step rib may be formed in the extension plate to support the discharge grill.

The opening part may include: a discharge part facing a space between the extension guide wall and the discharge side wall in a vertical direction; And a non-ejection unit facing the extension plate in a vertical direction.

An area of the discharge part may be larger than an area of the non-ejection part.

The connection portion of the discharge guide wall and the extension plate may overlap the flow guide wall in the vertical direction.

According to this embodiment, the humidifying air discharged from the discharge portion by the discharge grill may be discharged to the front upper side. This may prevent the wall located in the rear of the humidifying air cleaner to be wet, and mold and the like may not occur due to moisture on the wall.

In addition, the plurality of grill guide portions of the discharge grille may be spaced apart from each other in the front-rear direction and maintain a constant angle with respect to the virtual vertical line, so that the humidified air discharged from the discharge port may be always discharged to the front upper side. In addition, it is possible to prevent the foreign matter or the user's body of a predetermined size or more to enter the discharge port.

In addition, since the extension plate is formed to extend horizontally at the upper end of the discharge guide wall, the inclination of the discharge guide wall can be formed more steeply than when the extension plate is not formed. As a result, the air guided by the discharge guide wall formed to be inclined left and right to form the scroll flow path can be discharged close to the vertical to the left and right directions. Therefore, when the humidifying air cleaner is used next to the bed, the humidifying air discharged from the discharge portion is not directed toward the user's head or face there is an advantage that the user may not feel uncomfortable.

Further, the horizontal distance between the upper end of the discharge guide wall and the side panel adjacent thereto may be farther than the horizontal distance between the upper end of the extension guide wall and the side panel adjacent thereto. As a result, space between the pair of side panels may be secured.

In addition, an upper end of the discharge guide wall may overlap the flow guide wall in the vertical direction. Thereby, the extension plate extending from the upper end of the discharge guide wall can be formed sufficiently long as compared with the case where the upper end of the discharge guide wall is formed outside the flow guide wall.

In addition, the opening may include not only a discharge portion facing the inside of the scroll housing in the vertical direction but also a non-discharge portion facing the extension plate in the vertical direction. Thus, since the opening is not formed to be deflected to one side with respect to the left and right directions, the appearance of the humidifying air cleaner may be improved aesthetically.

In addition, humidifying air may be spread and flow from the discharge port of the scroll housing to the discharge part. Therefore, as compared with the case where the opening portion is composed only of the discharge portion facing the inside of the scroll housing in the vertical direction, there is an advantage that a part of the humidified air can be discharged smoothly through the opening portion without being blocked.

In addition, the area of the discharge portion may be larger than the area of the non-ejection portion. Thus, humidified air can be smoothly discharged.

In addition, some of the discharge grilles may cover the discharge portion and others may cover the non-discharge portion. Thus, since the discharge grill covers up to the non-discharge portion, the appearance of the humidifying air cleaner can be improved aesthetically.

In addition, since the stepped ribs supporting the discharge grille are formed in the extension plate, the discharge grille can be more stably supported.

1 is a perspective view showing the configuration of a humidifying air cleaner according to an embodiment of the present invention.
2 is a view showing a state in which the door of the humidifying air cleaner according to an embodiment of the present invention is opened.
Figure 3 is an exploded perspective view showing the configuration of a humidifying air cleaner according to an embodiment of the present invention.
Figure 4 is an exploded perspective view showing a part of the configuration of the humidifying air cleaner according to an embodiment of the present invention.
5 is a view showing the bottom configuration of the bucket according to an embodiment of the present invention.
6 is a cross-sectional view taken along line VI-VI 'of FIG. 1.
7 is a view showing a state in which the air filter and the bucket is disposed on the door according to an embodiment of the present invention.
8 is a view showing a state in which the filter disposed on the door according to an embodiment of the present invention is separated.
9 is a perspective view of a door assembly according to an embodiment of the present invention.
10 is a top view of the door assembly according to the embodiment of the present invention.
11 is a view showing the interior of the cabinet according to an embodiment of the present invention.
12 is an exploded perspective view showing a housing assembly and its peripheral configuration according to an embodiment of the present invention.
13 is a rear perspective view of the fan housing according to the embodiment of the present invention.
14 is an exploded perspective view of a blowing fan and a housing cover according to an exemplary embodiment of the present invention.
FIG. 15 is an enlarged view of A of FIG. 14.
16 is a view showing a portion of the housing cover according to an embodiment of the present invention.
17A and 17B are experimental graphs showing the flow of discharged air according to the presence or absence of an extension plate of the humidifying air purifier according to the embodiment of the present invention.
18 is a perspective view of an impeller according to an embodiment of the present invention.
19 is a view showing the shape of the blade of the impeller according to the embodiment of the present invention.
20A is a view showing the shape of a blade of a conventional impeller as a comparative example.
20B is a view showing the shape of a blade according to an embodiment of the present invention.
21 is a graph showing a change in noise according to the air volume of the conventional impeller and the impeller according to the embodiment of the present invention.
FIG. 22 is a graph illustrating noise for each air volume according to a setting angle TH of a blade according to an exemplary embodiment of the present invention.
FIG. 23 is a graph illustrating noise for each air volume according to a set length DL of a blade according to an exemplary embodiment of the present invention.
24 is a perspective view showing a rear configuration of the housing cover according to the embodiment of the present invention.
25 is a view showing a sensor device mounted to a housing cover according to an embodiment of the present invention.
26 is a view showing the configuration of a dust sensor according to an embodiment of the present invention.
27 is a front perspective view of a rear panel according to an embodiment of the present invention.
28 is a rear perspective view of the rear panel according to the embodiment of the present invention.
29 is a view illustrating a state in which the discharge grille is removed from an upper surface portion of the rear panel according to the embodiment of the present invention.
30 is an enlarged view of a partial configuration of a rear panel according to an embodiment of the present invention.
31A and 31B are experimental graphs showing the flow of discharge air according to the inclination of the grill guide portion of the discharge grill according to the embodiment of the present invention.
32 is a cross-sectional view showing the air flow in the humidifying air cleaner according to an embodiment of the present invention.
33 is a schematic view showing some components of a humidified air purifier according to an embodiment of the present invention.
34 is a schematic diagram showing air flow in a humidifying air cleaner according to an embodiment of the present invention.
35 is a front view of the housing cover according to another embodiment of the present invention.
36 is an enlarged view of a cutoff of the housing cover illustrated in FIG. 35.
37A is a perspective view showing a conventional housing cover as a comparative example.
37B is a perspective view of a housing cover according to another embodiment of the present invention.
38A shows an outline of a cutoff of a conventional housing cover as a comparative example.
38B is a diagram illustrating an outline of a cutoff of a housing cover according to another embodiment of the present invention.
FIG. 39 is a graph illustrating a change in noise according to an air volume of a blowing fan installed in a conventional housing cover and a blowing fan installed in a housing cover according to another embodiment of the present invention.
40A is a graph illustrating a change in noise according to an operating frequency of a blowing fan installed in a conventional housing cover as a comparative example.
40B is a graph illustrating a change in noise according to an operating frequency of a blowing fan installed in a housing cover according to another exemplary embodiment of the present invention.
41A is a view showing an outline of a cutoff of a conventional housing cover as a comparative example.
41B-41D illustrate an outline of a cutoff of a housing cover according to another embodiment of the present invention, depending on the location of the inflection point.
42 is a graph showing a change in noise according to the air volume of the blowing fan installed in each housing cover shown in FIGS. 41A to 41D.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function disturbs the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be "connected", "coupled" or "connected".

1 is a perspective view showing the configuration of a humidifying air cleaner according to an embodiment of the present invention, Figure 2 is a view showing a state in which the door of the humidifying air cleaner according to an embodiment of the present invention opened.

1 and 2, a humidifying air purifier 10 according to an exemplary embodiment of the present invention includes a cabinet 100 that forms an exterior and a door assembly 200 that is releasably coupled to the cabinet 100. Included.

The cabinet 100 includes a plurality of panels. In detail, the plurality of panels include a lower base 101, two side panels 103 provided on both sides of the lower base 101 and extending upward, and side panels 103 on both sides. An upper panel 105 coupled to the upper side and a rear panel 107 coupled to the rear sides of the side panels 103 on both sides are included. By the base 101, the two side panels 103, the top panel 105 and the back panel 107, the cabinet 100 may have a rectangular parallelepiped shape in which the front part is opened.

Since the plurality of panels may be made of wood to give an aesthetic appearance to furniture, the appearance may be beautiful.

An air filter assembly 280, a humidification filter assembly 300, and a blowing fan 480 (see FIG. 6) may be disposed in the interior space of the cabinet 100. The air filter assembly 280 and the humidification filter assembly 300 may be collectively referred to as a “filter assembly”.

The door assembly 200 may be provided to be drawn out to the front of the cabinet 100 to be opened or to be drawn back to be closed. The door assembly 200 includes a door panel 210 constituting the front portion of the humidifying air cleaner 10.

For example, the door panel 210 may have a shape of a square plate. In addition, in the state in which the door assembly 200 is closed, the door panel 210 forms an exterior of the front part of the humidifying air cleaner 10. The door panel 210 may be made of wood to feel aesthetics such as furniture.

Between the lower end of the door panel 210 and the base 101, a depression 30 recessed to the rear is formed. In addition, a suction part 225 is formed on the upper side of the recess 30 to suck air into the cabinet 100.

At the rear side of the upper panel 105 of the cabinet 100, a discharge part 109 through which filtered and humidified air is discharged is formed. The discharge part 109 may be located at the rear upper portion of the humidifying air cleaner 10.

The door assembly 200 further includes a receiving part 220 extending rearward from the rear surface of the door panel 210 to install a part of the humidifying air cleaner 10. The component may include an air filter assembly 280, a humidification filter assembly 300, and a bucket 270.

When the door assembly 200 is pulled out and opened, the air filter assembly 280, the humidification filter assembly 300, and the water tank 270 disposed in the accommodation part 220 may be pulled out together forward. . Therefore, a user may easily access the air filter assembly 280, the humidification filter assembly 300, and the bucket 270.

The door assembly 200 further includes a rail guide 230 for guiding the withdrawal or withdrawal of the door assembly 200. The rail guide 230 may be coupled to both lower sides of the receiving part 220.

3 is an exploded perspective view showing the configuration of a humidifying air purifier according to an embodiment of the present invention, Figure 4 is an exploded perspective view showing a partial configuration of a humidifying air purifier according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention 6 is a cross-sectional view taken along the line VI-VI ′ of FIG. 1.

3 to 6, a humidifying air purifier 10 according to an embodiment of the present invention includes an air filter assembly 280 for filtering air, a humidifying filter assembly 300 and air for humidifying air. Blowing fan 480 for generating a flow is included.

In detail, the cabinet 100 includes a body part 110 forming a space part 112 in which parts of the air cleaner are disposed.

The front part of the body part 110 may be opened, and the open front part may be shielded by the door assembly 200. The rear portion of the body 110 may be opened, and the opened rear portion may be shielded by the fan housing 410 and the housing cover 430. In addition, the upper portion of the body portion 110 is open, the open upper portion may be shielded by the electrical equipment 450.

The two side panels 103 are coupled to both sides of the body portion 110. The top panel 105 may be coupled to an upper side of the electrical component unit 450, and the rear panel 107 may be coupled to a rear side of the housing cover 430.

The door assembly 200 includes a door panel 210 forming a front appearance and a receiving portion 220 extending rearward of the door panel 210. The accommodation part 220 includes a door front part 221 coupled to a rear surface of the door panel 210. The door panel 210 and the door front part 221 may be collectively referred to as a "door front part".

The accommodating part 220 includes a door side part 222 extending rearward from both sides of the door front part 221, a door bottom part 224 provided below the door side part 222, and the door bottom part. A door rear portion 223 (see FIG. 7) extending upward from the rear side of the portion 224 is included. By the door front part 221, the door bottom part 224, the door side part 222, and the door rear part 223, a water tank 260 and a water tank 270 are formed inside the accommodating part 220. In addition, an installation space in which the air filter assembly 280 and the humidification filter assembly 300 are installed may be defined.

An air filter assembly 280 may be installed at the front portion of the accommodation portion 220. The air filter assembly 280 may include an air filter case 281 and an air filter 285 coupled to the filter case 281. The air filter assembly 280 may be disposed to be lifted upward and separated.

Based on the front-rear direction, a water tank 270 may be disposed at an approximately center portion of the accommodation portion 220, that is, the rear side of the air filter assembly 280. The bucket 270 may be installed in the water tank 260. The bucket 270 may be disposed to be lifted upward and separated, and the user may separate the bucket 270 to replenish water or to wash the bucket 270.

A valve hole 275a for discharging water is formed in the bottom portion 275 of the bucket 270, and a float device 276 for selectively opening and closing the valve hole 275a is installed in the valve hole 275a. Can be. The float device 276 operates to open the valve hole 275a when placed in a valve support part (not shown) provided in the water tank 260 and to close the valve hole 275a when separated from the valve support part. can do.

The water tank 260 may have a shape of a substantially hexahedron having an open top. The lower part of the water tank 260 includes a bucket support part 261 supporting the bucket 270. The bucket support part 261 forms a flat surface.

The water tank 260 further includes a float receiving portion 262 that protrudes downward from the bucket supporting portion 261 and has a space in which the float device 267 is installed. The float receiving portion 262 has a hollow shape having an empty inside, and may be positioned at an approximately central portion of the bucket supporting portion 261.

The float receiving portion 262 forms a first reservoir portion 262a in which water is stored, and the float apparatus 267 is movable in the vertical direction according to the water level stored in the first reservoir portion 262a. It may be provided. When the water level of the first reservoir 262a is greater than or equal to a predetermined level, the float device 267 may move upward to block the valve hole 275a of the bucket 270.

Inside the tank 260, a second reservoir 229 extending rearward from the float receiver 262 and storing water may be formed. The second reservoir 229 communicates with the first reservoir 262a and may form the same water level as the first reservoir 262a.

The humidifying filter assembly 300 may be installed in the second reservoir 229. A lower portion of the humidification filter 330 included in the humidification filter assembly 300 may be disposed to be immersed in the second reservoir 229.

The humidification filter 330 has a substantially circular shape, and the outer peripheral portion of the humidification filter 330 includes a collecting part 332 (see FIG. 7) having a structure capable of containing water. The collection unit 332 may be provided in plurality. In one example, the humidification filter 330 may have a structure similar to the structure of the "watermill".

The humidification filter 330 is rotatably provided, the water collected in the collecting unit 332 is moved upwards, gravity when the collecting unit 332 is lowered from the top of the humidifying filter 330 By flowing water to the central portion of the humidification filter 330. The humidification filter 330 may be made of a cloth, felt or sponge material that is easy to absorb water.

At the rear side of the water tank 260, a sterilizer 269 for irradiating light toward the inside of the water tank 260 to sterilize the water stored in the water tank 260 may be disposed. For example, the sterilizer 269 may include an ultraviolet LED.

The humidifying filter assembly 300 may be disposed at a rear portion of the receiving portion 220, that is, at the rear side of the bucket 270. The humidification filter assembly 300 includes a humidification filter case 330 rotatably supported by the humidification filter case 310 and the humidification filter case 310 and absorbing water stored in the water tank 260.

The humidifying air cleaner 10 further includes a housing assembly 400 disposed inside the cabinet 100. The housing assembly 400 includes a blowing fan 480 for generating air flow, a fan housing 410 disposed in front of the blowing fan 480, and a housing cover coupled to a rear side of the fan housing 410. 430 is included. The blowing fan 480 may be installed in a fan installation space SP (refer to FIG. 16) defined by the fan housing 410 and the housing cover 430.

The housing assembly 400 may be disposed at the rear side of the door assembly 200.

The blower fan 480 includes a centrifugal fan that sucks air in the axial direction and discharges it in the radial direction. For example, the centrifugal fan may include a sirocco fan. The axial direction of the blowing fan 480 may be a front and rear direction.

The fan housing 410 includes a fan suction part 415 (see FIG. 11). The fan suction part 415 may include a suction guide rib extending radially or circumferentially. By the suction guide rib, it is possible to prevent the user's hand into the blowing fan 480.

The humidified air cleaner 10 further includes an electric component 450 including a plurality of electronic components 453. The electrical component part 450 may further include an electrical component plate 451 covering an open upper portion of the body part 110, and the electrical component part 453 may be installed on an upper surface of the electrical component plate 451. . The electrical component unit 450 may further include an electrical component cover 455 for shielding at least a portion of the plurality of electronic components 453.

The electrical plate 451 may extend forward from the top of the housing assembly 400. In addition, the upper panel 105 may be coupled to an upper side of the electrical plate 451 to protect the electrical component 453.

Inside the body 110, a rail assembly 235 may be installed to guide the withdrawal and retraction of the door assembly 200. The rail assembly 235 may be disposed on both lower sides of the body portion 110. The rail guide 230 provided in the door assembly 200 may slide forward and backward along the rail assembly 235.

The rail cover 236 is disposed outside the rail assembly 235. By the rail cover 236, the rail assembly 235 may not be exposed to the outside. That is, the rail cover 236 may cover the rail assembly 235 not to be exposed to the space 112.

The lower portion of the body 110, the lighting bracket 116 is further provided with a lighting device is further included. The lighting bracket 116 may be spaced apart from an upper side of the base 101 of the cabinet 100. The depression 30 may be understood as a space between the base 101 and the lighting bracket 116.

The lighting device includes an illumination PCB 122 having an illumination source and an illumination case 124 coupled to the illumination PCB 122. The illumination source may be provided in plurality. The lighting case 124 may include partition ribs that divide the interior space of the lighting case 124 into a plurality of spaces, and an illumination source may be disposed in the plurality of spaces, respectively.

The reflective plate 120 may be installed on an upper surface of the front portion of the base 101. The reflector 120 may be provided to gently reflect or diffuse the light emitted from the illumination source. The illumination source is disposed above the reflective plate 120 and irradiates light downward toward the reflective plate 120. The depression 30 may be formed between the illumination source and the reflector plate 120.

7 is a view showing a state in which the air filter and the bucket is disposed in the door according to an embodiment of the present invention, Figure 8 is a view showing a state in which the filter disposed in the door according to an embodiment of the present invention is separated, 9 is a perspective view of a door assembly according to an embodiment of the present invention, Figure 10 is a top view of the door assembly according to an embodiment of the present invention, Figure 11 is a view showing the inside of the cabinet according to an embodiment of the present invention. .

7 to 11, the door assembly 200 according to the embodiment of the present invention includes a receiving portion 220 coupled to the rear surface of the door panel 210. The accommodating part 220 may be provided to be pulled forward and to the rear, and may be provided in a drawer form.

In the accommodation unit 220, an air filter assembly 280, a humidification filter assembly 300, a bucket 270, and a reservoir 260 may be installed.

The accommodating part 220 includes a door front part 221 constituting a front surface of the accommodating part 220, a door lower part 224 constituting a bottom of the accommodating part 220, and the door lower part A door side part 222 extending upward from both sides of the 224 and a door rear part 223 provided at the rear side of the door side part 222 are included.

The lower surface part 224 of the door is provided with a suction part 225 through which air is sucked. The suction part 225 may be located at the rear side of the front door part 221 and may be formed by passing at least a portion of the lower surface part of the door 224. Air outside the humidifying air cleaner 10 is sucked into the suction part 225 via the depression 30. And the sucked air can flow upwards.

The lower surface part of the door 224 includes an air filter seating part 226 on which the air filter assembly 280 is seated. The air filter seating part 226 is positioned at the rear side of the suction part 225 and constitutes a flat surface to allow the bottom surface of the air filter assembly 280 to be seated.

The door side part 222 includes a filter guide 225a for supporting a side part of the air filter assembly 280. The filter guide 225a may extend upward from both sides of the air filter seat 226, and may extend inclined forward from the bottom toward the top. Accordingly, the air filter assembly 280 may be disposed obliquely forwardly in a state in which the air filter assembly 280 is seated on the filter seating portion 226, and thus the user lifts the air filter assembly 280 upwards to Separation from the receiving portion 220 can be facilitated.

The door side part 222 further includes a filter support part 225b extending from the filter guide 225a in a horizontal direction and supporting a part of the front part of the air filter assembly 280. The filter support 225b may function as a "supporting jaw" for supporting the air filter assembly 280 not to fall forward in an inclined state.

The filter support 225b may be formed to be stepped inward with respect to the inner surface of the filter guide 225a.

The lower surface part of the door 224 further includes a water tank seating part 227 in which the water tank 260 is placed. The tank seating part 227 may be disposed at a lower position than the air filter seating part 226.

The door rear part 223 has a through hole 228 in which the sterilizer 269 is disposed. For example, the sterilizer 269 may be disposed inside the through hole 228 or may be disposed behind the through hole 228. The light irradiated from the sterilizer 269 may be transmitted to the water tank 260 via the through hole 228 to sterilize the stored water.

On the upper side of the water tank 260, a water tank 270 is disposed. The bucket 270 includes a bucket body for storing water and a bucket cover detachably coupled to an upper side of the bucket body. The user may separate the water tank cover and replenish water in the water tank body.

When the water tank 270 is placed in the water tank 260, the float device 276 of the water tank 270 is opened so that water stored in the water tank 270 flows into the water storage part of the water tank 260. Can be.

The humidification filter assembly 300 may be installed in the water tank 260. The humidification filter assembly 300 may be located at the rear side of the bucket 270, and the lower portion of the humidification filter assembly 300 may be disposed to be immersed in the second reservoir 229.

The humidification filter assembly 300 includes a humidification filter case 310 having a shaft support 315 and a humidification filter 330 having a central shaft 335 supported by the shaft support 315. The central axis 335 of the humidification filter 330 may be rotated in a clockwise or counterclockwise direction while being supported by the shaft support 315.

The humidification filter 330 includes a collecting part 332 for pumping water stored in the second reservoir 229 of the water tank 260. The water sprayed up from the collection part 332 may flow upward when the humidification filter 330 is rotated and then descends downward again when the humidification filter 330 is rotated. Water flowing into the humidification filter 330 may penetrate the humidification filter 330.

The humidifying air purifier 10 is a driving device for rotating the humidification filter 330, and a humidification filter driving gear which is coupled to the humidification filter motor 353 (see FIG. 6) and the humidification filter motor 353 and rotates. 355 is further included. The humidification filter motor 353 and the humidification filter driving gear 355 may be installed in the fan housing 410.

The humidification filter 330 includes a filter gear 338 interlocked with the humidification filter driving gear 355. The filter gear 338 may be provided on an outer circumferential surface of the humidification filter 330, and a gear may be coupled to the humidification filter driving gear 355. When the humidification filter motor 353 is driven, the filter gear 338 may rotate in a clockwise or counterclockwise direction in conjunction with the humidification filter driving gear 355.

12 is an exploded perspective view illustrating a housing assembly and a peripheral configuration thereof according to an embodiment of the present invention, FIG. 13 is a rear perspective view of a fan housing according to an embodiment of the present invention, and FIG. 14 is a blower according to an embodiment of the present invention. An exploded perspective view of the fan and housing cover.

The fan housing 410 includes a housing plate 411 that shields the rear of the body 110.

The housing plate 411 is coupled to the body portion 110 to shield the open rear end of the body portion 110.

The housing plate 411 is provided with a fan suction part 415 through which air is sucked. The fan suction part 415 may include a suction guide rib extending radially or circumferentially. For example, the fan suction part 415 may be located at the center of the housing plate 411.

The air in the body part 110 may flow to the housing cover 430 through the fan suction part 415.

An upper portion of the housing plate 411 may be coupled to the electrical plate 451 on which a plurality of electrical components are installed. The electrical plate 451 may be integrally formed with the housing plate 411. For example, the electrical plate 451 and the housing plate 411 may be formed in a "b" shape.

The housing plate 411 may be coupled to the housing cover 430 at the rear. In addition, the flow direction of the air forced by the blower fan 480 may be guided by the combination of the housing plate 411 and the housing cover 430.

The fan housing 410 further includes a fan motor mounting unit 413 to which a fan motor 483 to be described later is mounted.

The fan motor mounting portion 413 extends rearward from the rear surface of the housing plate 411. For example, the fan motor mounting part 413 may be formed at the center of the fan suction part 415. The fan motor mounting part 413 is formed to have a cylindrical shape with an empty inside, based on the center of the fan suction part 415.

That is, the fan motor mounting part 413 may be formed to protrude in a circular shape on the rear surface of the housing plate 411.

The fan motor mounting unit 413 may form a fan motor installation space 413a in which the fan motor 483 is accommodated. The impeller 485 of the blower fan 480 may be located outside the fan motor mounting part 413.

The fan housing 410 further includes a constraining rib 417 for guiding the coupling of the housing cover 430. The restraint rib 417 may form a space or a groove such that the front surface of the housing cover 430 is in close contact with the rear surface of the housing plate 411.

The restraint rib 417 guides the housing cover 430 to be accurately coupled to a designated position on the rear surface of the fan housing 410. For example, the front ends of the flow guide wall 432, the discharge guide wall 434, and the extension guide wall 433, which will be described later, are positioned to be inserted into or fixed to the restraint rib 417 to guide the flow of air into the internal space. can do. That is, the front surface of the housing cover 430 is in close contact with the rear surface of the housing plate 411, thereby forming an internal space between the fan housing 410 and the housing cover 430, the inner space A flow path of air passing through the blowing fan 480 may be formed.

The restraint rib 417 protrudes from the rear surface of the housing plate 411. The restraint rib 417 may extend to correspond to the front end of the housing cover 430.

For example, the restraint rib 417 may have an open curved shape. That is, the restraining rib 417 may be formed to be rounded in the shape of a band of an open curve at the rear surface of the housing plate 411.

Meanwhile, the blowing fan 480 may include an impeller 485 for suctioning and discharging air.

The impeller 485 may be rotatably mounted in the housing cover 430 by receiving the rotational force of the fan motor 483. In detail, a mounting hole 487 may be formed at the hub 486 of the impeller 485, and a locking part 481 may be mounted to the mounting hole 487 to which the rotation shaft of the fan motor 483 is connected. have. As a result, the impeller 485 may rotate together with the locking portion 481. However, the present invention is not limited thereto, and the locking unit 481 may be formed integrally with the hub 486 of the impeller 485.

In addition, the blower fan 480 may further include a fan motor 483 for generating power, and a motor cover 482 for mounting the fan motor 483 to the fan motor mount 413.

The fan motor 483 may be received and fixed in the fan motor installation space 413a of the fan motor mounting unit 413. The rotation shaft of the fan motor 483 may be connected to the locking portion 481 to transmit the rotational force to the impeller 485.

In the center of the motor cover 482 is formed an opening through which the rotating shaft of the fan motor 483 is connected to the locking portion 481. That is, the motor cover 482 may be located between the fan motor 483 and the locking portion 481.

The housing cover 430 includes a cover plate 431 and guide walls 432, 433, and 434 which form a space for accommodating the blower fan 480.

The cover plate 431 is spaced apart from the rear of the fan housing 410. In addition, the guide walls 432, 433, and 434 extend toward the fan housing 410 on the front surface of the cover plate 431 to form a space in which the blowing fan 480 is accommodated.

The guide walls 432, 433, and 434 may be formed to extend forward by a predetermined length along the outer circumference of the cover plate 431. For example, the guide walls 432, 433, and 434 may extend vertically forward along the front edge of the cover plate 431.

Thus, the guide walls 432, 433, 434 may contact the rear surface of the fan housing 410. For example, the front end portions of the guide walls 432, 433, and 434 may be disposed to contact or be inserted into the restraining ribs 417 of the housing plate 410.

As a result, the fan housing 410, the cover plate 431, and the guide walls 432, 433, and 434 provide a scroll flow path that can guide the flow of air forced by the blower fan 480. Can be formed.

Accordingly, the fan housing 410 and the housing cover 430 may be named together as the scroll housings 410 and 430, and the blowing fan 480 may be disposed inside the scroll housings 410 and 430. have.

The housing assembly 400, which includes the fan housing 410, the housing cover 430, and the blower fan 480, may be referred to as a centrifugal fan blower (or sirocco fan blower).

Here, the air flow path flowing into the blowing fan 480 through the fan suction part 415 of the housing plate 411 is called a suction flow path, and is discharged from the blowing fan 480 to discharge the discharge part 109. The air flow path flowing in the air is called a discharge flow path.

The discharge passage may include a second discharge passage flowing to the open end portion 431a according to the guide of the first discharge passage 430a and the extension guide wall 433, which flows along the guide of the flow guide wall 432 (to be described later) 430b).

The cover plate 431 and the guide walls 432, 433, and 434 may be formed by opening an upper end portion so that air flowing along the discharge passage is directed toward the discharge portion 109.

That is, an open end 431a may be formed at an upper end of the cover plate 431 to communicate with the discharge part 109. In addition, the open end 431a may be understood as one end forming an opening as a portion where the guide walls 432, 433, and 434 are not formed. The open end 431a may be positioned to cover the discharge part 109 at an upper side thereof.

Therefore, the air discharged radially from the blower fan 480 may flow to the upper portion of the housing cover 430, that is, the open end 431a. Air flowing to the upper portion of the housing cover 430 is discharged to the outside through the discharge unit 109.

Here, an opening formed by the open end 431a, the upper end of the extension guide wall 433, the discharge guide wall 434, and the upper end of the housing plate 411 is defined as a discharge port.

That is, the discharge port may be understood as an opening in which air is discharged to the discharge unit 109 located downstream of the second discharge channel 430b.

In addition, the guide walls 432, 433, and 434 may extend in a shape corresponding to the restriction rib 471. As an example, and the guide walls 432, 433, 434 may extend roundly from one upper end of the cover plate 431 to the other upper end. That is, the guide walls 432, 433, and 434 may have an open curve shape to correspond to the restraint rib 471.

In detail, the guide walls 432, 433, and 434 may include a flow guide wall 432, an extension guide wall 433, and a discharge guide wall 434.

The extension guide wall 433 may extend downward from a top of one side of the cover plate 431 to a first point. For example, the extension guide wall 433 may extend to form a straight line along the side end of the cover plate 431.

Here, the first point is located at the side end of the cover plate 431, the first angle is set in advance along the air flow direction (F) from the vertical reference line (D) with a focus on the reference point (O) to be described later It can be defined as a point located on the virtual extension line rotated by (θ, see FIG. 16). For example, the first angle θ may be set to 270 °.

The extension guide wall 433 may extend upward from one end of the flow guide wall 432, that is, the first point.

The extension guide wall 433 may be located close to one side panel of the pair of side panels 103 (see FIG. 3). For example, the extension guide wall 433 may be located adjacent to the left side panel.

The flow guide wall 432 may be rounded to surround a portion of the outer circumference of the blowing fan 480.

In more detail, the flow guide wall 432 may extend round from the first point to the second point (cutoff portion 435). The second point may be located above the first point. The second point may be understood as a point at which the cutoff part 435 is formed.

Here, the second point may be defined as a point located on an imaginary extension line rotated by a second predetermined angle along the air flow direction F from the vertical reference line D with the reference point O as the zoom point. have. For example, the second angle may be set to an angle within 20 ° from 0 °.

That is, the flow guide wall 432 may continuously extend from the lower end of the extension guide wall 433 to the cutoff part 435 in the direction of drawing an arc with a center on the reference point O.

The discharge guide wall 434 may extend inclined in a direction away from the extension guide wall 433 toward the cutoff portion 435 formed at the other end of the flow guide wall 432, that is, the upper side from the second point.

The discharge guide wall 434 may be located close to the other side panel of the pair of side panels 103 (see FIG. 3). For example, the discharge guide wall 434 may be located adjacent to the right side panel.

The discharge guide wall 434 may extend from the second point 435 to the upper end of the other side of the cover plate 431. In this case, the discharge guide wall 434 may extend in the upper diagonal direction. That is, the discharge guide wall 434 may extend continuously from the upper end of the flow guide wall 432 to the extension plate 436 to be described later.

In more detail, the discharge guide wall 434 may extend from the cutoff part 435 to one end of the extension plate 436. The rear end portion 432a of the flow guide wall 432 is continuously connected to the rear end portion 434a of the discharge guide wall 434, and the front end portion 432b of the flow guide wall 432. 16 may be continuously connected to the front end portion 434b of the discharge guide wall 434.

The discharge guide wall 434 may be formed such that an inner circumferential surface thereof is inclined. That is, the rear end portion 434a of the discharge guide wall 434 may be located inside the front end portion 434b of the discharge guide wall 434. Therefore, the inner circumferential surface of the discharge guide wall 434 which extends from the rear end portion 434a of the discharge guide wall 434 to the front end portion 434b of the discharge guide wall 434 may be formed as an inclined surface.

However, the inclined surface of the discharge guide wall 434 may extend to be perpendicular to the guide plate 431 at a point connected to the extension plate 436. That is, the rear end portion 434a of the discharge guide wall 434 is relatively larger than the front end portion 434b of the discharge guide wall 434 along the extending direction of the discharge guide wall 434. It can be extended. (See Figure 15)

The connecting portion of the discharge guide wall 434 and the extension plate 436, that is, the horizontal distance between the upper end of the discharge guide wall 434 and the other side panel (right side panel) 103 is the upper end of the extension guide wall 433. It may be farther than the horizontal distance between the side panel (left side panel) 103. This is because the extension plate 436 extends toward the other side panel (right panel) 103 at the upper end of the discharge guide wall 434.

In addition, an upper end portion of the discharge guide wall 433 may overlap the flow guide wall 432 in the vertical direction.

Cut-off portions 435 may be formed on the guide walls 432, 433, and 434. The cutoff part 435 may be formed such that the flow guide wall 432 and the discharge guide wall 434 are rounded.

The cut-off part 435 is a part where the flow guide wall 432 and the discharge guide wall 434 abut, and may be understood as a part including the second point described above.

In addition, the cutoff part 435 may be understood as a reference for distinguishing the first discharge channel 430a and the second discharge channel 430b. Here, the division of the flow path is not a physical division but an arbitrary division for convenience of explanation. Therefore, some of the air flowing into the second discharge passage 430b may be re-introduced into the first discharge passage 430a while colliding with the cutoff part 435. In addition, noise may occur during the collision and reflow. A detailed description of the cutoff unit 435 in this regard will be described later with reference to FIG. 15.

Meanwhile, the guide walls 432, 433, and 434 have air flow paths formed inside the housing cover 430, that is, widths W of the discharge flow paths 430a and 430b flow from the cutoff portion 435. It may be formed to gradually expand along the direction (F).

The width W of the discharge flow paths 430a and 430b is a distance in the radial direction of the impeller 485 from the rotation axis S of the impeller 485 to the inner circumferential surface of the guide walls 432, 433 and 434. Can be defined as

That is, the width W of the discharge passage may increase from the cutoff portion 435 toward the open end portion 431a along the flow direction F of the air. For example, the radial distance W1 centering on the reference point O between the cutoff portion 435 and the outer circumferential surface of the impeller 485 may be any other present along the air flow direction F. It is smaller than the distance W2 in the radial direction.

Accordingly, the cross-sectional area of the air flow of the discharge passage may gradually increase along the flow direction F of the air from the cutoff part 435. Therefore, the flow resistance of the air passing through the blowing fan 480 may be reduced, and noise generated from the upper fan 130 may be reduced.

Meanwhile, the housing cover 430 further includes a coupling bracket 438 coupled to the rear panel 107. The coupling bracket 438 may be provided at both sides and the upper portion of the housing cover 430. That is, the coupling bracket 438 may be provided on the outer surface of the guide wall 432, 433, 434.

The coupling bracket 438 may include a coupling part 438a (see FIG. 25) to which the coupling member is coupled. The fastening member may be coupled to the rear panel 107 by passing through the fastening part 438a.

The housing cover 430 further includes a sensor bracket 440 on which a plurality of sensors 500, 550, and 560 are mounted. The sensor bracket 440 may be coupled to an outer surface of the guide wall 432, 433, 434.

That is, the sensor bracket 440 may be installed in a space in which the flow of air, that is, the suction or discharge of the air is not made in the housing cover 430. For example, the sensor bracket 440 may be connected to a lower surface of the extension plate 436 and an outer surface of the flow guide wall 432 so that an opening is formed in an outer direction of the cutoff part 435.

That is, a through hole 446 may be formed between the sensor bracket 440 and the guide walls 432, 433, and 434.

Wires connected to the plurality of sensors 500, 550, and 560 mounted on the sensor bracket 440 may be located in the through hole 446. That is, the through hole 446 may be referred to as a wire connector.

The sensor bracket 440 includes a bracket body 441 in which a plurality of sensors 500, 550, and 560 are installed, and bracket support portions 443 and 445 supporting the bracket body 441.

The bracket support parts 443 and 445 may be coupled to support the bracket body 441 to the housing cover 430. For example, the bracket support parts 443 and 445 may include a first support part 443 connecting an upper portion of the bracket body 441 to the outer surface of the guide walls 432, 433, and 434, and the bracket body 441. A second support portion 445 connecting a lower portion to the outer surface of the guide wall 432, 433, 434 is included.

On the other hand, the reference point O of the housing cover 430 is the same as the center point of the blowing fan 480. Therefore, the reference point O may be located on the rotation axis S of the blowing fan 480. Here, the rotation axis (S) can be understood as a virtual horizontal line drawn forward from the reference point (O).

In addition, a virtual waterline perpendicular to the rotation axis S is defined as a vertical reference line D. FIG. In this case, the reference point O may be understood as the point where the rotation axis S and the vertical reference line D meet, that is, the foot of the waterline. Therefore, it can be understood as an imaginary horizontal line drawn upward from the vertical reference line D and the reference point O.

As a result, the flow of air passing through the housing assembly 400 may flow in the direction of the rotation axis S and be discharged in the direction of the vertical reference line D.

Referring to the flow of air passing through the housing assembly 400 in detail, the air introduced into the blowing fan 480 in the direction of the rotation axis (S) guides the fan housing 410 and the housing cover 430 It flows to the open end part 431a along the scroll flow path formed by it.

As described above, the discharge flow path is discharged from the blower fan 480 toward the discharge part 109, the discharge flow path is a first discharge flow path (430a) and extends in accordance with the guide of the flow guide wall 432 A second discharge passage 430b flowing to the open end portion 431a according to the guide of the guide wall 433 may be included.

Therefore, the air introduced into the blower fan 480 is discharged in the radial direction, and the air discharged in the radial direction flows along the first discharge channel 430a and flows into the second discharge channel 430b. The air introduced into the second discharge passage 430b may flow upward along the vertical reference line D and may be discharged to the outside by passing through the discharge unit 109 located above the open end 431a. .

FIG. 15 is an enlarged view of A of FIG. 14.

Referring to FIG. 15, the cutoff part 435 may be formed from a rear end contact 435a to which the rear end 432a of the flow guide wall 432 and the rear end 434a of the discharge guide wall 434 are connected. The front end portion 432b of the flow guide wall and the front end portion 434b of the discharge guide wall may be formed to extend to the front end contact 435b.

Since the rear end portion 434a of the discharge guide wall 434 is located inside the front end portion 434b of the discharge guide wall 434, the rear end contact 435a is positioned inward of the front contact 435b. can do.

In this case, the tangent DM passing through the rear contact 435a and the tangent DP passing through the front contact 435b may be parallel to the vertical reference line D. FIG.

An inner circumferential surface of the cutoff part 435 extending from the rear end contact 435a of the cutoff part 435 to the front end contact 435b may form a curved surface. For example, the inner circumferential surface of the cutoff part 435 may form a curved surface in the vertical direction or the front and rear direction to reduce the flow resistance of the air collided by the cutoff part 435.

The inner circumferential surface of the cutoff portion 435 may form a convex portion and a concave portion (dashed line). That is, the inner circumferential surface of the cutoff part 435 may be three-dimensionally formed by the convex part and the concave part (dotted line) in the direction of the rotation axis S of the blowing fan 480.

In detail, the inner circumferential surface of the cutoff portion 435 is recessed outwardly from the convex portion and the cutoff center point O` to the front end contact 435b which are formed to protrude inward from the rear end contact 435a to the cutoff center point O`. It may include a recess formed to be.

Here, the cutoff center point O` may be defined as a midpoint between the rear end contact 435a and the front end contact 435b. Therefore, the cutoff center point O` may be understood as the inflection point O`.

When the inner circumferential surface of the cutoff part 435 is differently expressed, the cutoff part 435 may be formed to have a curved arc shape in the rotation axis direction S of the blowing fan 480.

As described above, some of the air flowing into the second discharge passage 430b may be reintroduced into the first discharge passage 430a while colliding with the cutoff portion 435. In addition, noise may occur during the collision and reflow.

In detail, the cut-off part 435 means an interface between the discharge and re-suction of the air flow inside the housing cover 430, and the flow distribution of the air collided by the cut-off part 435 is actually It does not increase linearly along the axis S of rotation. Therefore, the cutoff part 435 may generate an internal flow noise (Blade Pass Frequency, BPF) due to the pressure difference or the pressure concentration due to the collision of air flow.

According to an embodiment of the present invention, by forming the inner circumferential surface of the cut-off portion 435 that can alleviate the collision of air flow impinging the cut-off portion 435, the internal flow noise (BPF) can be reduced There is this.

Meanwhile, the discharge guide wall 434 extends along the discharge direction of the air from the cutoff part 435 and at the same time the inclination angle of the cover plate 431 changes along the discharge direction of the air. Can be.

In detail, the discharge guide wall 434 includes the cover plate 431 along the air discharge direction from a cutoff part 435 connecting the rear end contact 435a, the inflection point O ', and the front end contact 435b. The inclination angle formed by and may extend to be close to the vertical. As a result, the discharge guide wall 434 may form a three-dimensional shape.

Herein, the change of the inclination angle is gradually increased when the inclination angle between the cover plate 431 and the discharge guide wall 434 is an acute angle so as to be vertical, and gradually decreases when the obtuse angle is vertical. can do. Therefore, the end of the discharge guide wall 434 may be perpendicular to the cover plate 431.

According to this, the air flowing along the discharge guide wall 434 toward the open end portion 431a flows along the inner circumferential surface of the discharge guide wall 434, that is, the inclined surface, so that the flow resistance is relatively small, and the flow direction As a result, the flow cross-sectional area is also increased. As a result, there is an effect that can reduce the internal flow noise.

16 is a view showing a portion of the housing cover according to an embodiment of the present invention. In detail, FIG. 16 is a diagram in which the above-described sensor bracket 440 is omitted in order to more easily describe the extension plate 436.

Referring to FIG. 16, the extension guide wall 433 may include a cutting portion 433a.

The cutting portion 433a may be formed such that an upper front end portion of the extension guide wall 433 is lowered upward. The width of the cutting portion 433a may be formed to increase in the upward direction.

The cutting portion 433a may form a hole to be coupled to the upper end of the fan housing 410. The hole may be formed to be fitted to the housing plate 411.

In addition, the housing cover 430 further includes an extension plate 436 connected to the discharge guide wall 434.

That is, the extension plate 436 may be located below the openings 109 and 109A (see FIG. 27) and the discharge grill 170.

The extension plate 436 may extend horizontally at the upper end of the discharge guide wall 434.

The extension plate 436 may be bent from the discharge guide wall 434 and extend along an upper end of the housing cover 430. For example, the extension plate 436 may be bent from an upper end of the discharge guide wall 434 to extend to a side end of the cover plate 431. That is, the extension plate 436 and the discharge guide wall 434 may be provided to be recessed into the housing cover 430.

In addition, the extension plate 436 may include a step rib 436a for forming a step so that the discharge grill 170 (see FIG. 27) to be described later is seated. The discharge grill 170 may be supported through the stepped ribs 436a together with the grill installation grooves 107f (see FIG. 27) to be described later.

In another aspect, the extension plate 436 may be formed to extend along the open end portion 431a by a predetermined length L from the upper end of the cover plate 431. In one example, the predetermined length (L) may be set to about 75mm.

The extension plate 436 may be positioned perpendicular to the cover plate 431. That is, the cover plate 431 may be formed to extend forward from the upper end of the cover plate 431 by the predetermined length (L).

That is, the extension plate 436 may be located downstream of the second discharge passage 430b, that is, outside the discharge port. According to this, there is an advantage that the flow direction of the air discharged through the discharge unit 109 can be concentrated to be relatively upward as compared with the case where the extension plate 436 is not formed.

In this regard, for more detailed description, it is assumed that the discharge guide wall 434 extends straight from the cutoff part 435 to the upper end of the cover plate 431.

In this case, the virtual discharge guide wall V and the cover plate 431 may extend to include a recessed space formed by bending the extension plate 436 and the discharge guide wall 434 in the second discharge passage 430b. Can be.

That is, the discharge port is extended from one upper end of the cover plate 341 to the other upper end, the flow cross-sectional area can also be enlarged in proportion.

That is, the extension direction of the virtual discharge guide wall V may have a larger rotation angle relative to the vertical reference line D than the extension direction of the discharge guide wall 434.

Accordingly, the air passing through the discharge part 109 according to the guide of the virtual discharge guide wall V is higher than the air passing through the discharge part 109 according to the guide of the discharge guide wall 434. It is possible to form a flow stream of discharged air which is laterally biased.

17A and 17B are experimental graphs showing the flow of discharged air according to the presence or absence of an extension plate of the humidifying air purifier according to the embodiment of the present invention.

FIG. 17A is an experimental graph showing a flow (pressure) distribution of air discharged from the discharge part 109 of the humidifying air cleaner having the virtual discharge guide wall V, and FIG. 17B is the discharge guide wall 434. And it is an experimental graph showing the flow distribution of the air discharged from the discharge unit 109 of the humidifying air cleaner equipped with an extension plate 436.

Referring to FIGS. 17A and 17B, a flow (pressure) distribution of air discharged from a man lying in a bed and a humidifying air cleaner disposed near the bed may be confirmed. At this time, the height of the discharge portion 109 of the humidifier air cleaner is set to the same position as the height of the head portion (head) where the respirator of the man (Man) is located.

Referring to FIG. 17A, the air discharged through the discharge part 109 of the humidifying air cleaner having the virtual discharge guide wall V is discharged relatively to one side in which the man is located. Accordingly, it can be seen that an air flow in which the discharged air directly contacts the head of the man is formed.

Referring to FIG. 17B, the air discharged through the discharge part 109 of the humidifying air cleaner equipped with the discharge guide wall 434 and the extension plate 436 does not directly contact the head, but relatively. It can be seen that the discharge air stream concentrated upward. In the experiment of FIG. 17B, the predetermined length L of the extension plate 436 is set to 75 mm.

That is, the air passing through the discharge part 109 by the extension plate 436 may form a relatively concentrated air flow.

The humidifying air purifier 10 according to the present embodiment is a furniture type humidifying air purifier that provides a use as a furniture such as a bookcase and a table, and thus, an arrangement example similar to furniture arranged in an indoor space may be assumed.

For example, in order to create a more comfortable sleeping environment when the user sleeps, the user may place a humidifying air cleaner near the bed. In this case, the position of the air discharge portion of the furniture-type humidifying air cleaner, which is formed to provide a function such as a bookcase or a table, may be generally disposed relatively close to the respirator of an adult lying in a bed.

According to this, the air discharged from the humidifying air cleaner disposed near the bed can directly contact the user. Thus, the user may feel uncomfortable and may be hygienically dangerous.

On the other hand, the humidifying air purifier according to the embodiment of the present invention, by guiding the discharge direction of the air according to the extension plate 436 upwards can prevent the discharge air from directly contacting the user in the above-described use environment. There is an advantage. As a result, the user convenience is increased, the degree of freedom of arrangement of the product is increased, thereby improving the usability of the product.

18 is a perspective view of an impeller according to an embodiment of the present invention.

The impeller 485 may have a cylindrical shape as a whole. In detail, the impeller 485 includes a plurality of blades 488, a main plate 490 to which the plurality of blades 488 are coupled, and a hub provided at a central portion of the main plate 490 and protruding forward. 486).

As described above, the hub 486 may be provided with a rotation shaft connecting portion 481 (see FIG. 14) to which the rotation shaft of the fan motor 483 is connected. The plurality of blades 488 may be spaced apart from each other in the circumferential direction of the main plate 490.

The impeller 485 further includes a fixing portion 492 provided at the front of the plurality of blades 488. The fixing unit 492 performs a function of fixing the plurality of blades 488. Rear ends of the plurality of blades 488 may be coupled to the main plate 490, and front ends thereof may be coupled to the fixing portion 492.

A fan motor 483 is disposed in front of the hub 486 of the impeller 485. The fan motor 483 may be mounted to the fan motor mounting part 413 of the fan housing 410.

A motor cover 482 and a locking portion 481 may be disposed behind the fan motor 483. The motor cover 482 may fix the fan motor 483 to the fan motor mounting part 413 of the fan housing 410. The locking portion 481 is coupled to the rotation shaft of the fan motor 483, and is disposed on the hub 482 to transmit rotational power of the fan motor 483 to the impeller 485.

19 is a view showing the shape of the blade of the impeller according to the embodiment of the present invention.

The blade 488 according to an embodiment of the present invention may have an airfoil shape that is curved in one direction. In more detail, at least a portion of the demonstration C (Chord) of the blade 488 is located outside the blade 488 and may be formed to face the pressure surface 601. In this case, the demonstration C of the blade refers to an imaginary straight line connecting the leading edge 603 (leading edge) and the trailing edge 604 (trailing edge).

In addition, the pressure surface 603 of the blade 488 may be formed concave, the negative pressure surface 604 may be formed convex. The impeller 485 may rotate in a direction in which the pressure surface 603 of the blade 488 receives air pressure. Air sucked into the impeller 485 through the fan intake 415 (see FIG. 6) impinges on the leading edge 603 and flows along the surfaces of the pressure surface 601 and the negative pressure surface 602 and the trailing edge 604. Can be flow separated.

Blade 488 may be formed to have a predetermined leading radius (R).

Hereinafter, in order to describe the shape of the blade 488 of the present invention in detail, an imaginary point, a line, or the like, which is a reference for drawing, is first defined.

The mean camber line 656 may mean a virtual line connecting the centers of the virtual circles inscribed to the pressure surface 601 and the negative pressure surface 602. The camber refers to the distance between the average camber line 656 and the demonstration C, and the maximum value of the camber may be referred to as the maximum camber M. Also, with respect to the direction parallel to the demonstration C, the distance between the point 655 having the maximum camber M in the average camber line 656 and the leading edge 603 may be referred to as the maximum camber position ML. .

In the average camber line 656, a virtual circle 654 centered on a point 655 corresponding to the maximum camber position ML and inscribed in the pressure plane 601 and the negative pressure plane 602 may be constructed. In this case, the contact point of the virtual circle 654 and the negative pressure surface 602 may be referred to as the maximum camber point 658. That is, the maximum camber point 658 may mean a point corresponding to the maximum camber position ML of the negative pressure surface 602.

The negative pressure surface 602 may include a first linear surface 606 and a second linear surface 607 positioned between the maximum camber point 658 and the leading edge 603. Since the first linear surface 606 and the second linear surface 607 are formed flat, it may be difficult for the first linear surface 606 and the second linear surface 607 to determine the camber line according to the above-described definition. have. Accordingly, a virtual line 657 connecting the point 655 corresponding to the maximum camber position ML and the leading edge 603 in the average camber line 656 may be constructed. The virtual line 657 may maintain a constant distance from the pressure surface 601, and the distance d between the virtual line 657 and the pressure surface 601 may be equal to the radius d of the virtual circle 654. May be the same.

The imaginary line 657 does not include the first linear surface 606 and the second linear surface 607 on the negative pressure surface 602, and instead connects the leading edge 603 and the maximum camber point 658 in a streamlined fashion. Assuming that a curved surface is included, this may mean an average camber line of the blade. That is, the virtual line 657 may be referred to as a virtual average camber line.

The reference point 605A may be located on the negative pressure surface 602. More specifically, the reference point 605A may be located between the maximum camber point 658 and the leading edge 603 along the negative pressure surface. The reference point 605A may mean a point at which the distance from the negative pressure surface 602 to the pressure surface 601 is maximum. That is, the distance t from the negative pressure surface 602 to the pressure surface 601 may be the maximum at the reference point. In this case, the distance may be a minimum distance t from one point of the negative pressure surface 602 to the pressure surface 601, and may mean a thickness of the blade 488.

The distance t between the pressure surface 601 and the negative pressure surface 602 may be farther from the leading edge 603 to the reference point 605A and closer to the trailing edge 604 from the reference point 605A. have.

At the leading edge 603, a first virtual straight line 651 may be constructed that abuts the virtual line 657. More specifically, of the tangents at one point on the virtual line 657, the tangent line when the one point is in close proximity with the leading edge 603 may be the first virtual straight line 651. In addition, a second virtual straight line 652 connecting the leading edge 603 and the reference point 605A may be constructed.

An angle formed by the first virtual straight line 651 and the second virtual straight line 652 may be referred to as a set angle TH, and the set angle TH may be an acute angle. In more detail, the set angle TH may be 7.5 degrees to 23 degrees.

With respect to the direction parallel to the first virtual straight line 651, the distance DL between the leading edge 603 and the reference point 605A may be referred to as a set distance DL, and the set distance DL may be referred to as a blade 488. ) May be shorter than the maximum camber position (ML). In addition, the set distance DL may be 0.21 times to 0.27 times the demonstration length CL of the blade 488.

The exact position of the reference point 605A may be determined by the set angle TH and the set distance DL.

Hereinafter, the negative pressure surface 602 of the blade 488 will be described in more detail.

The negative pressure surface 602 of the blade 488 according to the embodiment of the present invention may include a first linear surface 606 and a second linear surface 607.

The first linear surface 606 may be located between the reference point 605A and the leading edge 602, and the second linear surface 607 may be located between the reference point 605A and the maximum camber point 658. have.

The first linear surface 606 and the second linear surface 607 may be formed flat, respectively, and may be formed obliquely to each other. An angle between the first linear surface 606 and the second linear surface 607 may be an obtuse angle.

The distance between the first linear surface 606 and the pressure surface 601 may be farther away from the leading edge 603 as the reference point 605A, and between the second linear surface 607 and the pressure surface 601. The distance may be closer to the maximum camber point 658 from the reference point 605A.

The negative pressure surface 602 may further include a connection curved surface 605 connecting the first linear surface 606 and the second linear surface 607. In this case, the reference point 605A may correspond to the inflection point of the connection curved surface 605. However, the present invention is not limited thereto, and the first curved surface 606 and the second linear surface 607 may be directly connected to the negative pressure surface 602 without the connection curved surface 605. In this case, the reference point 605A may mean a connection point between the first linear surface 606 and the second linear surface 607.

The negative pressure surface 602 may further include a flow curved surface 608. The flowing curved surface 608 may connect the second linear surface 607 and the trailing edge 604, and at least a portion may be located between the maximum camber point 658 and the trailing edge 604.

The shape formed by the first linear surface 606 and the second linear surface 607 may be referred to as a droop shape or a Dolphin head shape.

20A is a view showing the shape of the blade of the conventional impeller as a comparative example, Figure 20B is a view showing the shape of the blade according to an embodiment of the present invention, Figure 21 a conventional impeller and an impeller according to an embodiment of the present invention This is a graph showing the change in noise according to the wind volume.

The blade 488 and the conventional blade 488 ′ according to the embodiment of the present invention may have the same demonstration length CL and the maximum camber M, and the maximum camber position ML may also be the same.

In addition, the pressure surface 601 of the blade 488 according to the embodiment of the present invention may be the same or similar to the pressure surface 601` of the conventional blade 488`. In addition, the flow curved surface 608 of the blade 488 according to an embodiment of the present invention may be the same as the corresponding portion of the negative pressure surface 602` of the conventional blade 488`.

However, the negative pressure surface 602 ′ of the conventional blade 488 ′ is entirely formed in a streamlined curved surface, whereas the negative pressure surface 602 of the blade 488 according to the embodiment of the present invention has a first linear surface 606. ) And the second linear surface 607 may have a different shape.

The noise was compared by driving the impeller having the shape of the conventional blade 488` and the impeller 485 having the blade 488 according to the embodiment of the present invention. The impeller under test included 37 blades and was set to a diameter of 270 mm and a height of 88 mm. Each blade was set at an inlet angle of 68.2 degrees and an outlet angle of 162 degrees.

Referring to FIG. 21, it can be seen that the noise of the impeller b having the blade 488 according to the embodiment of the present invention is smaller than that of the conventional impeller a having the blade 488 ′. In more detail, the noise was reduced by 1.3dB at the airflow 3.2CMM and 1.1dB at the airflow 5.3CMM.

Impeller (b) having a blade 488 according to an embodiment of the present invention it can be seen that the noise is reduced than the impeller (a) having a conventional blade (488`) at any air flow. That is, the blade 488 according to the embodiment of the present invention has the effect of reducing the noise only in a specific air flow conditions, and has the effect of reducing the noise for all the air flow.

FIG. 22 is a graph illustrating noise for each air volume according to a setting angle TH of a blade according to an exemplary embodiment of the present invention.

The set distance (DL, see FIG. 19) of the blade which tested the noise for each air volume according to the set angle TH was set to 0.21 times the demonstration length (CL, see FIG. 19).

Referring to FIG. 22, when the set angle TH of the blade 488 according to the embodiment of the present invention is 7.5 degrees, 13 degrees, and 23 degrees, the noise is higher than that of the impeller having the conventional blades 488 ′. It can be confirmed that this has been reduced.

When the set angle TH is smaller than 7.5 degrees or larger than 23 degrees, the noise reduction effect is insignificant compared to the impeller having the blade 488`, and the noise reduction effect is maximized when the set angle TH is 13 degrees. It was confirmed that.

In more detail, 38.1dB of noise was measured when the set angle TH was 13 degrees based on the airflow 5.3CMM, and 38.84dB of noise was measured when the set angle TH was 7.5 degrees. At 23 degrees, a noise of 38.63 dB was measured.

Therefore, the set angle TH of the blade 488 may be 7.5 degrees to 23 degrees, and preferably 13 degrees.

FIG. 23 is a graph illustrating noise for each air volume according to a set length DL of a blade according to an exemplary embodiment of the present invention.

The set angle (TH, see FIG. 19) of the blades in which noise by air volume according to the set distance DL was set to 13 degrees.

Referring to FIG. 23, in the case where the set distance DL of the blade 488 according to the exemplary embodiment of the present invention is 0.21 times the demonstration length CL and 0.27 times the demonstration length CL, the conventional blade 488 is used. It can be seen that the noise is reduced compared to the impeller with `).

When the set distance DL is closer than 0.21 times or more than 0.27 times the length of the demonstration CL, the noise reduction effect is insignificant compared to the impeller having the blade 488`, and the set distance DL is the length of the demonstration. It was confirmed that the noise reduction effect was maximum when it was 0.21 times (CL).

More specifically, 38.1 dB of noise was measured when the set distance DL was 0.21 times the demonstration length CL based on the airflow 5.3CMM, and when the set distance DL was 0.27 times the demonstration length CL. A noise of 38.93 dB was measured.

Therefore, the set distance DL of the blade 488 may be 0.21 times to 0.27 times the demonstration length CL, and preferably 0.21 times the demonstration length CL.

24 is a perspective view showing a rear configuration of the housing cover according to the embodiment of the present invention.

As described above, the housing cover 430 may further include a sensor bracket 440 on which a plurality of sensor devices 500, 550, 560 (see FIG. 25) are mounted. The sensor bracket 440 may be connected to an outer surface of the guide wall 432, 433, 434. In detail, the sensor bracket 440 may be installed in a space in which air flow, that is, suction or discharge of air, is not well formed in the housing cover 430. In detail, the sensor bracket 440 may be installed in a space in which air flow, that is, suction or discharge of air, is not well formed in the housing cover 430. The sensor bracket 440 may be installed in an empty space that does not act as an air discharge passage in the housing cover 430.

In detail, the sensor bracket 440 may include a bracket body 441 in which a plurality of sensors 500, 550, and 560 are installed, and bracket support portions 443 and 445 supporting the bracket body 441. .

The bracket body 441 may be formed to have a substantially hexahedral shape. The bracket body 441 may be located at the side of the guide walls 432, 433, and 434. In detail, the bracket body 441 may be positioned at the side of the cutoff part 435 corresponding to the discharge guide wall 434 and the flow guide wall 432.

On the rear surface of the bracket body 441, a sensor installation space 441a in which a plurality of sensors 500, 550, and 560 are installed may be provided. The sensor installation space 441a may be understood as a space recessed forward from the rear surface of the bracket body 441. The sensor installation space 441a may include a plurality of support ribs 441b for supporting a plurality of sensors and a sensor fastening portion 441c for fastening the sensor device with a fastening member.

The support rib 441b may support the plurality of sensors and partition an installation position of the plurality of sensors. A fastening member is coupled to the sensor fastening portion 441c, and the plurality of sensors may be coupled to the sensor bracket 440 through the fastening member.

By such a configuration, the plurality of sensors can be stably fixed in the sensor installation space 441a. The sensors installed in the sensor installation space 441a may be shielded by the rear panel 107 coupled to the rear side of the housing cover 430.

The bracket support parts 443 and 445 may support the bracket body 441 to the housing cover 430. For example, the bracket support portions 443 and 445 may include a first support portion 443 for connecting an upper portion of the bracket body 441 to an outer surface of the guide walls 432, 433, and 434, and the bracket body 441. A second support portion 445 is connected to the lower portion of the guide wall 432, 433, 434 to the outer surface of the guide wall 432. For example, the first support part 443 may be connected to at least one of the discharge guide wall 434 and the extension plate 436, and the second support part 445 may be connected to the flow guide wall 432. .

In addition, a through hole 446 may be formed between the sensor bracket 440 and the guide walls 432, 433, and 434. In the through hole 446, a wire (wire) electrically connected to the plurality of sensors may be disposed to pass therethrough.

Meanwhile, a sensor charging device to be described later may be installed on the rear surface of the sensor bracket 440, specifically, the rear surface of the first support portion 443. To this end, the back of the first support portion 443 is provided with a charging device fastening portion 443a for fastening the sensor charging device to the fastening member.

25 is a view showing a sensor device mounted on a housing cover according to an embodiment of the present invention, Figure 26 is a view showing the configuration of a dust sensor according to an embodiment of the present invention, Figure 27 is an embodiment of the present invention 28 is a front perspective view of the rear panel according to the present invention, and FIG. 28 is a rear perspective view of the rear panel according to the embodiment of the present invention, and FIG. 29 is a state in which the discharge grille is removed from the upper surface of the rear panel according to the embodiment of the present invention. Drawing.

25 to 29, the humidifying air purifier 10 further includes a plurality of sensors 500, 550, and 560 installed in the housing cover 430. The plurality of sensors 500, 550, and 560 may be understood as a configuration for acquiring environmental information of an indoor space through foreign matter included in the indoor air.

The plurality of sensors 500, 550, and 560 may include a dust sensor 500 that detects the amount of dust included in the indoor air. The dust sensor 500 may be installed on the side of the housing cover 430.

In detail, the dust sensor 500 is installed in the sensor installation space 441a provided at the rear of the sensor bracket 440, and is installed in the indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. The amount of dust included can be detected. In this case, the rear panel 107 covers the dust sensor 500 so as not to be exposed to the outside.

In more detail, the dust sensor 500 includes a sensor body 510 having a component for substantially detecting the amount of dust in the air.

The sensor main body 510 includes a sensor substrate 511 having a terminal portion 515, a sensor case coupled to the sensor substrate 511, and having a heater 517 and optical transmitting / receiving portions 518 and 519 embedded therein. 512 may be included.

The terminal portion 515 may be understood as a configuration in which an electric line or a predetermined connector to which the electric line is connected can be connected.

The sensor substrate 511 provides a space in which the terminal portion 515 and the sensor case 512 are installed. The sensor substrate 511 may have a substantially rectangular plate shape and may be seated in the sensor installation space 431a.

Inside the sensor case 512, a flow path of air to be detected, that is, a sensor flow path 512a may be included.

In addition, the sensor case 512 further includes a sensor suction unit 513 through which air sucked through the sensor coupling unit 520 to be described later is introduced. The sensor suction part 513 may be disposed under the sensor case 512, and may be configured to penetrate a rear surface of the sensor case 512.

And a heater 517 may be disposed on one side of the sensor suction unit 513. The heater 517 increases the ambient air temperature of the sensor suction unit 513. When the heater 517 is driven, the air temperature around the sensor suction unit 513 is increased to decrease the density and thus the pressure is lowered.

In addition, a sensor discharge part 514 for discharging air may be formed above the sensor flow path 512a. The sensor discharge part 514 may be configured to penetrate the rear surface of the sensor case 512. That is, the sensor discharge part 514 is disposed above the sensor suction part 513.

In addition, optical transceivers 518 and 519 may be disposed at both sides of the sensor channel 512a. The optical transceivers 518 and 519 include an optical transmitter 518 disposed at one side of the sensor channel 512a to irradiate light. For example, the light transmitting unit 518 may include a light emitting diode (LED).

In addition, the optical transceiver 518, 519, which is disposed on the other side of the sensor channel (512a), when the light irradiated from the light transmitter 518 acts on the air flowing through the sensor channel (512a), The light receiving unit 519 for measuring the sensitivity of the light scattered by the dust contained in the air is included. For example, the light receiver 519 may include a photodiode detector. As the amount of dust included in the air increases, the sensitivity of light received by the light receiver 519 is lowered, and the output voltage value may be higher. That is, the sensitivity of light and the output voltage value may be inversely proportional.

In addition, the sensor case 512 includes a cleaning hole 516 accessible by a user for cleaning the dust sensor 500. The cleaning hole 516 is formed by opening at least a portion of the rear surface of the sensor case 512. The rear of the cleaning hole 516, the through hole 521 of the sensor coupling portion 520 is disposed, the rear of the through hole 521 may be covered by the sensor cover 530 to be described later. That is, the cleaning hole 516 and the through hole 521 are configured to communicate with each other.

In addition, the dust sensor 500 further includes a sensor coupling part 520 coupled to the sensor body 510. The sensor coupling part 520 may serve as a path for guiding external indoor air to the sensor suction part 513.

In this embodiment, the sensor coupling part 520 is installed on the inner surface of the rear panel 107. When the rear panel 107 is coupled to the rear side of the housing cover 430, the sensor coupling part 520 may be coupled or connected to the sensor body 510. In this case, the through hole 521 of the sensor coupling part 520 may be in communication with the sensor suction part 513 and the cleaning hole 516.

The through hole 521 may be configured to penetrate the front and rear surfaces of the sensor coupling part 520. Therefore, the indoor air introduced through the rear part of the through hole 521 may be guided to the sensor suction part 513 after passing through the through hole 521. The through hole 521 may be understood as a sensor access hole for accessing the sensor body 510.

In addition, the rear portion of the through hole 521 may be covered by the sensor cover 530. To this end, a hook coupling portion (not shown) may be formed on the rear portion of the sensor coupling portion 520 to be hooked to attach and detach the sensor cover 530. The hook coupling portion includes a coupling groove. Therefore, a hook (not shown) of the sensor cover 530 may be hooked to the coupling groove of the hook coupling part.

In addition, the dust sensor 500 further includes a sensor cover 530 coupled to the rear of the sensor coupling part 520. The sensor cover 530 includes a grill part 531 in which air is sucked into the dust sensor 500, and air in the dust sensor 500 is discharged to the outside.

The grill part 531 is configured to penetrate the rear surface of the sensor cover 530. The grill part 531 is configured to communicate with the through hole 521 formed in the sensor coupling part 520.

Therefore, the indoor air sucked into the grill part 531 may be sucked into the sensor suction part 513 of the sensor case 512 after passing through the through hole 521 of the sensor coupling part 520. have. The air discharged to the sensor discharge part 514 of the sensor case 512 may be discharged to the outside through the grill part 531 through the through hole 521 of the sensor coupling part 520. have.

In addition, the sensor cover 530 further includes a hook (not shown) coupled to the hook coupling portion formed in the sensor coupling portion 520. The hook may include a locking part (not shown) inserted into the hook coupling part and a gripping part (not shown) that can be grasped by a user. For example, the gripping portion may extend upward from the catching portion.

According to this configuration, when the user separates the sensor cover 530 from the sensor coupling part 520, the cleaning hole 516 may be exposed to the outside through the through hole 521. Then, the user may approach the sensor main body 510 through the through hole 521 and the cleaning hole 516 to clean the dust sensor 500.

That is, the user may access the cleaning hole 516 by separating only the sensor cover 530 without having to remove the sensor coupling part 520 or the rear panel 107. There is an effect that can easily clean the foreign matter, such as dust deposited in the sensor body 510.

In addition, the plurality of sensors 500, 550, and 560 may further include a gas sensor 550 that detects a concentration of pollutant contained in the indoor air. The gas sensor 550 is installed on the side of the housing cover 430. For example, the gas sensor 550 may be disposed on the side of the dust sensor 500.

In detail, the gas sensor 550 is installed in the sensor installation space 431a provided on the rear surface of the sensor bracket 440, and is connected to the indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. The concentration of contaminants included can be detected. In this case, the rear panel 107 covers the gas sensor 550 so as not to be exposed to the outside.

The gas sensor 550 may include a sensor unit 551 for detecting a concentration of pollutants in the air, and a sensor substrate 552 on which the sensor unit 551 is installed.

The sensor substrate 552 provides a space in which the sensor unit 551 is installed. The sensor substrate 552 may have a substantially rectangular plate shape and may be seated in the sensor installation space 431a.

In addition, the plurality of sensors 500, 550, and 560 may further include a humidity sensor 560 that detects humidity of indoor air. The humidity sensor 560 is installed on the side of the housing cover 430. For example, the humidity sensor 560 may be disposed under the gas sensor 550.

The humidity sensor 560 is installed in the sensor installation space 431a provided on the rear of the sensor bracket 440, and the humidity of the indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. It can be detected. In this case, the rear panel 107 covers the humidity sensor 560 so as not to be exposed to the outside.

The humidity sensor 560 includes a sensor unit 561 for sensing moisture in the air and a sensor substrate 562 on which the sensor unit 561 is installed.

The sensor substrate 562 provides a space in which the sensor unit 561 is installed. The sensor substrate 562 may have a substantially rectangular plate shape and may be seated in the sensor installation space 431a.

As described above, the dust sensor 500, the gas sensor 550, and the humidity sensor 560 are spaces in which air flow is poor in the housing cover 430, that is, outside the housing cover 430. It is arranged close to the side. Therefore, it is possible to secure an installation space in which the plurality of sensors are installed, and since the plurality of sensors are concentrated in one place, there is an effect of facilitating management of the sensors.

In addition, the through hole 446 is positioned between the sensor bracket 440 in which the plurality of sensors 500, 550, and 560 are installed, and the guide walls 432, 433, and 434. That is, the plurality of sensors are spaced apart from the second discharge passage 430b (see FIG. 14) by the through hole 446, so that air flow in the second discharge passage 430b is applied to the plurality of sensors. The influence can be prevented. Thus, sensing sensitivity in the plurality of sensors can be improved.

In addition, since the plurality of sensors 500, 550, and 560 are covered by the rear panel 107 and are not exposed to the outside, the product appearance may be neat. When the rear panel 107 is removed, the plurality of sensors 500, 550, and 560 may be exposed to the outside, so that some of the plurality of sensors 500, 550, and 560 may fail. By removing only the rear panel 107, the failed sensor can be replaced or repaired, thereby simplifying the maintenance and management of the sensor.

Meanwhile, the humidifier air cleaner 10 further includes a sensor charging device 800 installed in the housing cover 430. The sensor charging device 800 may be understood as a device for supplying power to at least one or all of the dust sensor 500, the gas sensor 550, and the humidity sensor 560.

In detail, the sensor charger 800 includes a charging device case 810 in which a plurality of components for charging, that is, a charging module is embedded.

The charging device case 810 has a substantially hexahedral shape and is installed on a rear surface of the sensor bracket 440. Specifically, the charging device case 810 is installed on the rear of the first support portion 443 supporting the sensor bracket 440. In this case, the charging device case 810 may further protrude to the rear of the housing cover 430 compared to the plurality of sensors 500, 550, 560 installed in the sensor bracket 440. In other words, the surface on which the charging device case 810 is installed may further protrude rearward than the surface on which the plurality of sensors 500, 550, and 560 are installed. In addition, the charging device case 810 may be exposed to the outside through the rear panel 107.

In addition, the charger case 810 further includes a plug insertion hole 812 into which an external charging plug is inserted. The plug insertion hole 812 may be understood as a portion in which a plug connected to an external power supply unit (not shown) is electrically connected to the charging device case 810.

For example, the plug insertion hole 812 may be formed on an upper surface of the charging device case 810. That is, the plug insertion hole 812 may be formed to be recessed downward from the upper surface portion of the charging device case 810.

In addition, the charger case 810 may further include a connection part 814 for fastening the charger case 810 to the sensor bracket 440. For example, the connection part 814 may be formed to extend from both sides of the charging device case 810, respectively. The connection part 814 may be fastened by a fastening member to a fastening device fastening part 443a (see FIG. 24) provided in the first support part 443.

In addition, the sensor charger 800 further includes a charger cover 820 coupled to the charger case 810. For example, the charging device cover 820 may have a hexahedron shape with an open front portion.

The charger cover 820 has a function of preventing the charger case 810 from being exposed to the outside through the rear panel 107. To this end, the charger cover 820 may be disposed in an area of the rear panel 107 to which the charger case 810 is exposed. That is, the charging device cover 820 may be installed to shield the opening 107a formed in the rear panel 107 from the rear of the rear panel 107. In this case, the charging device cover 820 may be installed on the rear of the rear panel 107 to be mounted and detached.

In summary, the charger case 810 is exposed to the outside through the opening 107a of the rear panel 107, and the exposed charger case 810 is selectively covered by the charger cover 820. Can be.

In addition, a plug passage hole 821 through which an external charging plug passes is formed in the charger cover 820. The plug passage hole 821 may be understood as a part for the charging plug to be electrically connected to the charger case 810 located inside the charger cover 820.

For example, the plug through hole 821 may be provided at an upper surface of the charging cover 820. The plug through hole 821 may be formed by partially cutting the upper surface of the charging device cover 820. The plug insertion hole 812 of the charging device case 810 may be exposed through the plug passage hole 821. That is, the plug through hole 821 and the plug insertion hole 812 may be disposed to face each other and communicate with each other.

Accordingly, the user may supply power to the sensor charging device 800 by inserting a plug into the plug insertion hole 812 through the plug through hole 821. Then, the sensor charging device 800 may supply power supplied through the plug to at least one or all of the dust sensor 500, the gas sensor 550, and the humidity sensor 560.

In addition, the plug passage hole 821 may be provided with a foreign matter prevention part (not shown) for preventing foreign matter such as dust or moisture from penetrating. For example, the foreign matter prevention part may be formed of an elastic material such as rubber, and may be provided inside the plug passage hole 821. The foreign matter prevention part may be configured to selectively open and close the plug passage hole 821. By such a configuration, a user may easily access the sensor charger 800 through the charger cover 820. Therefore, the charging of the plurality of sensors can be made easily and simply.

The rear panel 107 may cover a rear side of the housing cover 430. That is, the rear panel 107 may be viewed as a configuration located at the rear of the humidifying air cleaner 10.

In detail, the rear panel 107 may include a plate portion disposed on the rear side of the housing cover 430.

The plate portion may have a square plate shape. The plate unit may be coupled to the rear side of the housing cover 430 to cover the plurality of sensors 500, 550, 560, the sensor charging device 800, and the like.

In the plate part, an opening 107a through which the sensor charging device 800 passes may be formed. The opening 107a may be formed in a shape corresponding to the shape of the sensor charging device 800. When the rear panel 107 is coupled to the housing cover 430, at least a portion of the sensor charging device 800 may be exposed to the outside by the opening 107a. The exposed sensor charger 800 may be shielded by the charger cover 820.

The rear panel 107 may further include a panel fastening portion 107b fastened by a fastening member to the rear side of the housing cover 430. The panel fastening part 107b may be fixed to the housing cover 430 by being fastened to a fastening member 438a of the housing cover 430. The panel fastening part 107b may be formed on the front surface of the plate part.

In the rear panel 107, an insertion portion 107c protruding forward to be inserted into the body portion 110, a support rib 107d for fixing or supporting the insertion portion 107c, and a groove formed at a lower end thereof. The service home 107e may be further formed.

The insertion portion 107c may be provided at both sides of the lower end of the rear panel 107, respectively. In addition, the insertion part 107c may protrude forward and be inserted into a lower end of the body part 110. Through this, the rear panel 107 may be coupled to the rear of the body 110.

The support rib 107d may extend forward from the rear panel 107 to fix and support the insertion portion 107c.

In addition, the support rib 107d may also function as a coupling bracket coupled to the housing cover 430. In this case, the coupling bracket may be provided at the upper and lower portions of the plate portion.

The service groove 107e may be formed to be recessed upwardly from the lower end of the rear panel 107 in order to simplify the movement of the humidified air cleaner 10.

In addition, the rear panel 107 may be provided with a discharge part 109 through which filtered and humidified air is discharged, and a non-discharge part 109A positioned at a side of the discharge part 109 and without air discharge. have.

In detail, an upper portion of the rear panel 107 may be bent into a L shape to extend forward to form an upper surface portion of the rear panel 107. Opening portions 109 and 109A which are vertically penetrated may be formed in an upper surface portion of the rear panel 107.

The open parts 109 and 109A may include a discharge part 109 and a non-ejection part 109A. The discharge part 109 may face the second discharge path 430b of the housing cover 430 (see FIG. 16) in the vertical direction, and the non-discharge part 109A may face the extension plate 436 in the vertical direction. Can be. That is, a portion of the opening portions 109 and 109A facing the space between the extension guide wall 433 and the discharge side wall 434 in the up and down direction, that is, the second discharge passage 430b is the discharge portion 109. The portion facing the extension plate 436 in the vertical direction may be the non-discharge portion 109A.

The area of the discharge part 109 may be wider than the area of the non-ejection part 109A.

The discharge part 109 may be formed to communicate with the second discharge passage 430b and the discharge hole.

The discharge unit 109 may guide the air passing through the housing assembly 400 to be discharged to the outside.

That is, when the rear panel 107 is coupled to the rear side of the housing cover 430, the discharge part 109 is located above the second discharge passage 430b of the housing cover 430.

The rear panel 107 may further include a discharge grill 170 for guiding a discharge direction of air passing through the discharge unit 109.

The discharge grill 170 may cover the openings 109 and 109A from above.

Discharge grills 170 may be provided in the openings 109 and 109A, and the discharge grills 170 may cover the open ends 431a and the extension plates 436 of the housing cover 430.

In more detail, a part of the discharge grille 170 may cover the discharge part 109, and another part may cover the non-discharge part 109A. That is, a part of the discharge grille 170 may face the second discharge passage 430b in the up and down direction, and the other part may face the extension plate 436 in the up and down direction.

The rear panel 107 may be formed with a grill installation groove 107f in which the discharge grill 170 is installed. The grill installation groove 107f may be formed as a groove recessed downward from the upper end of the upper surface portion of the rear panel 107. The grill installation groove 107f may be formed to be stepped with the upper end of the upper surface portion of the rear panel 107. The grill installation groove 107f may be located at the edge of the opening portions 109 and 109A.

The discharge grill 170 may be seated in the grill installation groove 107f.

30 is an enlarged view of a partial configuration of a rear panel according to an embodiment of the present invention.

The discharge grill 170 may include an outer frame seated along the grill installation groove 107f and a grill guide part 175 for guiding a flow direction of air passing through the discharge part 109.

That is, the grill guide part 175 may be located above the discharge part 109. The grill guide part 175 may be formed as a frame extending in the long side direction of the upper surface of the rear panel 107.

The grill guide part 175 may be arranged such that a plurality of grill guide parts 175 are spaced at predetermined intervals in an inner direction of the outer frame. For example, the grill guide part 175 may be spaced apart from each other in the front and rear directions.

Accordingly, the discharge part 109 may be opened to the outside through the plurality of grill guide parts 175.

As a result, the air discharged to the discharge part 109 may flow between the plurality of grill guide parts 175 and may be discharged along the extension surface of the grill guide part 175. That is, the flow direction of the discharged air may be guided by the grill guide part 175.

The grill guide part 175 may extend to be inclined upward by a predetermined angle θA from an upper surface of the rear panel 107. That is, the grill guide part 175 may be formed to be inclined forward.

That is, the grill guide part 175 may maintain a constant angle with respect to the virtual vertical line.

The grill guide part 175 is an extension starting point DH which is an imaginary vertical line parallel to the vertical reference line D (see FIG. 14) and an extension starting point located at the side end of the grill installation groove 107f. Based on (OH), it can extend upwardly and incline forward by a predetermined angle (theta) A. Here, the horizontal line drawn along the side end of the grill installation groove 107f may be parallel to the ground.

That is, the grill guide part 175 may extend to be inclined upward toward the top panel 105.

In another aspect, the discharge grill 170 may extend to be inclined toward the door assembly 200 toward the upper side so that the air passing through the discharge unit 109 is guided forward.

According to this, when the humidifying air purifier 10 is arranged such that the rear panel 107 is in close contact with the indoor wall surface, the discharged air passing through the discharge unit 109 may be discharged in the indoor direction opposite to the wall surface direction. There is an advantage.

31A and 31B are experimental graphs showing the flow of discharge air according to the inclination of the grill guide portion of the discharge grill according to the embodiment of the present invention.

In more detail, FIG. 31A is an experimental graph showing a flow distribution of discharge air passing through the discharge part 109 when the grill guide part 175 extends in the vertical direction along the extension reference line DH. Is an experimental graph showing a flow distribution of discharge air passing through the discharge part 109 when the grill guide part 175 extends to be inclined by the predetermined angle θA from the extension reference line DH.

The humidifying air purifier according to the present embodiment is a furniture type humidifying air purifier that provides a use as a furniture such as a bookcase and a table, and thus may be disposed near a wall similar to furniture generally disposed in an indoor space.

Referring to FIG. 31A, the air discharged from the discharge portion 109 of the humidifying air cleaner 10 disposed so that the rear panel 107 faces the wall surface W directly and widely contacts the wall surface W. Referring to FIG. It can confirm that airflow is formed.

Referring to FIG. 31B, the air discharged from the discharge portion 109 by the grill guide portion 175 inclined toward the front is discharged directly into the indoor space opposite the wall surface W, so that the air is discharged directly to the wall surface W. FIG. It can be seen that the airflow contacted with is minimized.

That is, the flow of air discharged from the humidifying air cleaner 10 may be guided away from the indoor wall by the discharge grill 170 extending to be inclined toward the front.

Therefore, there is an advantage that can prevent the discoloration, damage, mold, etc. that may occur due to the discharge air containing the moisture to the wallpaper. That is, since it is possible to prevent wallpaper contamination, there is an advantage of keeping the environment of the indoor space clean.

32 is a cross-sectional view showing the air flow in the humidifying air cleaner according to an embodiment of the present invention.

Referring to FIG. 32, the air flow in the humidifying air cleaner 10 according to the embodiment of the present invention will be described.

First, when the blower fan 480 is driven, air outside the humidified air cleaner 10 may be sucked into the suction part 225 via the depression 30. The air sucked by the suction part 225 may flow upward and flow into the receiving part 220.

The air then passes through the air filter assembly 280. Since the air filter assembly 280 is disposed on the air filter seating portion 226, the air filter assembly 280 is disposed to be inclined forward and thus air may evenly pass through the filter surface of the air filter assembly 280.

The air filtered by the air filter assembly 280 flows backward and may pass through the humidification filter assembly 300. Air is humidified while passing through the humidification filter assembly 300, and the humidified air may pass through the blowing fan 480.

As such, since the air filter assembly 280, the water tank 260, and the humidification filter assembly 300 are sequentially disposed from the front portion of the accommodation portion 220 toward the rear, air filtering and humidification can be easily performed. have.

Air is sucked in the axial direction of the blowing fan 480, it may be discharged in the radial direction. Air passing through the blowing fan 480 flows upward, and may be discharged to the outside through the discharge unit 109. That is, since the air is sucked into the front lower portion of the humidifying air cleaner 10 and discharged to the rear upper portion, the flow resistance may be reduced and the blowing performance may be improved.

Looking at the internal flow path of the air passing through the housing assembly 400, it is possible to form an internal flow path flowing in the axial direction of the blower fan 480 is discharged upward toward the discharge unit 109.

When the internal flow path is described in detail, the air flowing in the rotation axis direction of the blowing fan 480 is discharged in the radial direction of the blowing fan 480 by the guide of the fan housing 410 and the housing cover 430. It may flow toward the discharge part 109 along a scroll-shaped flow path.

33 is a schematic view showing a part of the configuration of the humidifying air cleaner according to an embodiment of the present invention, Figure 34 is a schematic view showing the air flow in the humidifying air cleaner according to an embodiment of the present invention.

33 and 34, the humidifying air purifier 10 according to the embodiment of the present invention is characterized in that the air filter 285, the humidifying filter 330, and the blowing fan 480 are arranged in a line. It is done.

Specifically, the air filter 285 is disposed in the front portion of the humidified air cleaner 10, the blowing fan 480 is disposed in the rear portion of the humidified air cleaner 10. The humidification filter 330 is disposed in a space between the air filter 285 and the blowing fan 480.

In the present invention, the reason why the humidification filter 330 is disposed in the space between the air filter 285 and the blowing fan 480 is to facilitate humidification of air. That is, since the humidification filter 330 is located downstream of the air filter 285 and upstream of the blowing fan 480, the air passing through the air filter 285 retains moisture. By the blowing fan 480 can be quickly discharged to the outside.

Unlike the present invention, if the humidification filter 330 is located downstream of the blowing fan 480, the air continuously passing through the air filter 285 and the blowing fan 480 is the humidification filter The flow rate may be relatively slow after passing 330. If the flow rate is lowered, it takes a long time for the moisture-containing air to be discharged to the outside, and as a result, the time for the moisture in the air to evaporate may increase.

In addition, the air filter 285 may be disposed to face the humidification filter 330, and the humidification filter 330 may be disposed to face the blowing fan 480. In this case, an interval L1 between the air filter 285 and the humidification filter 330 may be greater than an interval L2 between the humidification filter 330 and the blowing fan 480.

An interval L1 between the air filter 285 and the humidification filter 330 may mean a front and rear gap between any point of each of the air filter 285 and the humidification filter 330. In addition, the interval L2 between the humidification filter 330 and the blowing fan 480 may refer to the front and rear intervals between any point of each of the humidification filter 330 and the blowing fan 480.

That is, by placing the humidification filter 330 closer to the blowing fan 480 side than the air filter 285, the air containing the moisture to help quickly discharged to the outside by the blowing fan 480. Can be.

In addition, the air filter 285, the humidification filter 330, and the blowing fan 480 may be sequentially spaced apart along the axial direction of the fan motor 483 (see FIG. 32) of the blowing fan 480.

In detail, the air filter 285, the humidification filter 330, and the blower fan 480 may be understood as a configuration through which the indoor air passes essentially for filtering and humidification. Therefore, when the air filter 285, the humidification filter 330, and the blowing fan 480 are arranged in a line, the air flow direction may have straightness.

That is, the air sucked into the humidifying air cleaner 10 may move straight through and pass through the air filter 285, the humidifying filter 330, and the blowing fan 480. Accordingly, the air sucked into the humidification air purifier 10 may pass through the air filter 285, the humidification filter 330, and the blowing fan 480, while flowing backward, so that the air is filtered and humidified. The effect can be improved.

Meanwhile, the height H1 from the lower door 224 to the upper end of the air filter 285 may be higher than the height H2 from the lower door 224 to the upper end of the humidification filter 330. Can be. That is, by forming an overall height of the air filter 285, it is possible to improve the filtering performance of the air.

On the other hand, since the humidification filter 330 exhibits sufficient humidification performance even when the overall height is lower than that of the air filter 285, the humidification filter 330 may be configured to have a lower height than the air filter 285. Can be.

The air passing through the humidification filter 330 is formed by forming the height H3 from the lower surface part 224 of the door to the upper end of the blowing fan 480 lower than the height H2 of the humidification filter 330. To the outside as quickly as possible.

In addition, the height T1 from the lower door 224 to the lower end of the air filter 285 may be higher than the height T2 from the lower door 224 to the lower end of the humidification filter 330. Can be. This is because the humidification filter 330 is to be sufficiently immersed in the water stored in the water tank 260.

The height T3 from the lower surface of the door 224 to the lower end of the blower fan 480 may be higher than the height T1 of the lower end of the air filter 285. By this configuration, the air passing through the air filter 285 can be moved straight into the suction side of the blowing fan 480 to move straight without changing the direction.

On the other hand, in terms of the air flow path, a suction flow path S1 is formed on the suction side of the air filter 285, and a first intermediate flow path S2 is formed between the air filter 285 and the humidification filter 330. And a second intermediate flow path S3 is formed between the humidification filter 330 and the blowing fan 480, and a discharge flow path is formed in the housing cover 480 corresponding to the discharge side of the blowing fan 480. S4) can be formed.

The suction channel S1 is understood as the suction channel of the air filter 285 and may extend in the vertical direction. The front and rear widths of the suction passages S1 may be formed differently based on the vertical direction. For example, a lower width of the suction channel S1 may be greater than an upper width of the suction channel S1. The difference in the flow path width may be due to the configuration in which the upper portion of the air filter 285 is inclined forward.

The first intermediate passage S2 may be formed above the bucket 270. The first intermediate passage S2 is understood as a suction passage of the humidification filter 330 and may extend in the front-rear direction. The length of the front and rear directions of the first intermediate channel S2 may be greater than the length of the front and rear directions of the suction channel S1.

The second intermediate channel S3 is understood as the suction channel of the blowing fan 480 and may extend in the front-rear direction. Air flowing through the second intermediate channel S3 may flow in the axial direction of the blowing fan 480. The length of the front and rear directions of the second intermediate channel S3 may be smaller than the length of the front and rear directions of the first intermediate channel S2.

The discharge passage S4 may be understood as the discharge passage of the blower fan 480. In addition, the discharge passage S4 may be formed in a space where the blowing fan 480 is installed, that is, a space formed by the fan housing 410 and the housing cover 430. The air flowing through the discharge passage S4 may be discharged upward through the discharge unit 109. The discharge passage S4 may include the first discharge passage 430a (see FIG. 14) and the second discharge passage 430b (see FIG. 14) described above.

As such, since the air filter assembly 280, the water tank 260, and the humidification filter assembly 300 are sequentially disposed from the front portion of the accommodation portion 220 toward the rear, air filtering and humidification can be easily performed. have.

FIG. 35 is a front view showing a housing cover according to another embodiment of the present invention, FIG. 36 is an enlarged view of a cut-off of the housing cover shown in FIG. 35, and FIG. 37A shows a conventional housing cover as a comparative example. 37B is a perspective view showing a housing cover according to another embodiment of the present invention, and FIG. 38A is a view showing an outline of a cutoff of a conventional housing cover as a comparative example, and FIG. 38B is a view of the present invention. The outline of the cutoff of the housing cover according to another embodiment is shown.

35 is a diagram in which the sensor bracket 440 is omitted for convenience.

Other embodiments described below are the same as the above-described embodiments except for the configuration of the housing cover, and thus the overlapping description will be omitted and the differences will be mainly described.

The flow guide wall 432 may have a scroll shape in which the distance from the cutoff part 435 to the blower fan 480 and more specifically, the outer circumference of the impeller 485 is gradually increased along the flow direction of the air.

The flow guide wall 432 may be formed between the reference angle point (k = 0 ° or 360 °) and the cutoff part 435 about the reference point O. Here, the reference angle point (k = 0 ° or 360 °) may mean a point where the flow guide wall 432 and the extension guide wall 433 meet.

The cutoff portion 435 may be located about 90 ° in the rotational direction (eg, clockwise) of the impeller 485. The central axis of rotation of the impeller 485 may overlap the cutoff part 435 in the direction of k = 90 °.

The flow guide wall 432 may be formed to be rounded in a direction orthogonal to the rotational central axis of the impeller 485 over the whole or part from the cutoff portion 435 to the reference angle point (k = 0 ° or 360 °). have.

As the impeller 485 is rotated closer to the reference angle point (k = 0 ° or 360 °) from the cutoff part 435, the curvature of the flow guide wall 432 may be smaller and the radius of curvature may be larger.

Between the inner circumference of the flow guide wall 432 and the outer circumference of the impeller 485, a first discharge passage 430a through which air discharged radially from the impeller 485 flows is formed, and the impeller 485 is rotated. The cross-sectional area of the flow of the first discharge passage 430a may be gradually increased along the direction. That is, the distance between the inner circumference of the flow guide wall 432 and the outer circumference of the impeller 485 may gradually move away along the rotational direction of the impeller 485.

The distance between the inner circumference of the flow guide wall 432 and the outer circumference of the impeller 485 may be referred to as the discharge passage inner width. The discharge passage inner width cf1 between the cutoff portion 435 and the point where k = 180 ° is narrower than the discharge passage inner width cf2 between the point where k = 180 ° and k = 270 °. Can be formed.

The discharge guide wall 434 may extend from the cutoff part 435 provided at one side of the flow guide wall 432, and the extension guide wall 433 may extend from the other side of the flow guide wall 432. have. In more detail, the discharge guide wall 434 and the extension guide wall 433 may extend in a direction away from the impeller 430, for example, approximately upward.

A second discharge passage 430b may be formed between the discharge guide wall 434 and the extended guide wall 433. The second discharge passage 430b may communicate with the first discharge passage 430a.

The discharge guide wall 434 and the extension guide wall 433 may be configured to move away from each other along the flow direction of air. Therefore, the flow cross section of the second discharge passage 430b may gradually increase along the flow direction of air.

The cutoff part 435 may be positioned between the flow guide wall 432 and the discharge guide wall 434, and may be formed to protrude toward the second discharge channel 430b.

The cutoff part 435 may be spaced apart from the outer circumference of the impeller 485 to form a gap.

If the gap is too large, a back flow may occur in which part of the air flowing from the first discharge passage 430a to the discharge passage 433b is re-sucked into the gap, which is the blower fan 480. May cause a decrease in performance. On the contrary, if the gap is too small, the flow pressure may be concentrated at the end of the cutoff part 435 to increase the noise. Thus, the gap is preferably adjusted appropriately.

For example, the minimum distance g between the cutoff part 435 and the first connection part 702 and the outer circumference of the impeller 485, which will be described in detail later, is 8% of the diameter G of the impeller 485. More than 10% is preferred. The minimum distance g between the first connector 702 and the outer circumference of the impeller 485 may be referred to as a cutoff gap.

37A and 38A, the cutoff portion 435 ′ of the conventional housing cover is rounded in the longitudinal direction (hereinafter, referred to as a first direction) and rounded in the width direction (hereinafter referred to as a second direction). It can be formed flat without support. That is, the conventional cutoff part 435 'has a predetermined curvature with respect to the first direction, but the curvature with respect to the second direction is zero. The first direction may mean a direction connecting the flow guide wall 432 and the discharge guide wall 434. The second direction may mean a direction connecting the front end and the rear end of the cutoff part 435.

37B and 38B, the cutoff portion 435 of the housing cover 430 according to the embodiment of the present invention is not only rounded with respect to the first direction but also at least partially with respect to the second direction. Can be formed round.

This is to reduce noise generated when some of the air flowing from the first discharge passage 430a to the second discharge passage 430b strikes the end of the cutoff portion 435.

Hereinafter, the structure of the cutoff part 435 is demonstrated in detail.

The cutoff part 435 may include a first connection part 702 connecting the outline 701 to the flow guide wall 432, and a second connection part 703 connecting the outline 701 to the discharge guide wall 434. It may include.

The outline 701 may mean an end portion of the cutoff portion 435, and more specifically, the outline 701 may mean an outline line of the portion protruding most in the direction of the discharge flow path 433b from the cutoff portion 435.

At least a part of the outline 701 of the cutoff part 435 may be formed to be at least partially rounded in the second direction.

Referring to FIG. 38A, the outline 701 ′ of the cutoff of the conventional housing cover has a linear shape with respect to the second direction. On the contrary, referring to FIG. 38B, the outline 701 of the cutoff part 435 of the housing cover 430 according to the embodiment of the present invention may be formed to have a predetermined curvature at least partially in the second direction. .

The flow rate of air that strikes the outline 701 of the cutoff part 435 may vary depending on the position in the second direction. In one example, the flow rate of air at a point adjacent to the cover plate 431 may be slower than the flow rate of air at a point adjacent to the fan housing 410 (see FIG. 12). The outline 701 of the cutoff part 435 of the housing cover 430 according to the present embodiment may be formed to correspond to the flow velocity distribution for each position.

More specifically, the outline 701 of the cutoff portion 435 includes a linear portion 704 obliquely connected to the cover plate 431 and a round portion extending from the linear portion 704 and connected to the fan housing 410. 705 may be included.

The linear part 704 may be elongated in a direction oblique to the second direction. An angle α1 formed between the outer end of the linear portion 704 and the cover plate 431 may be an obtuse angle.

On the other hand, the round part 705 may be rounded to have a predetermined curvature with respect to the second direction. The round part 705 may be formed convexly toward the fan housing 410.

An angle α2 formed between the fan housing 410 and the outer end of the round part 705 may be an acute angle. Here, the angle α2 may mean an angle formed by the tangent t with respect to the end of the round part 705 connected to the fan housing 410 and the fan housing 410.

The length Y3 of the linear portion 704 in the second direction may be half of the distance Y1 between the cover plate 431 and the fan housing 410. In addition, the length Y2 of the round part 705 in the second direction may be half of the distance Y1 between the cover plate 431 and the fan housing 410. In this case, the distance Y1 between the cover plate 431 and the fan housing 410 may mean a length Y1 of the outline 701 in the second direction.

In more detail, a point forming the boundary between the linear portion 704 and the round portion 705 may be referred to as an inflection point 506, and between the cover plate 431 and the inflection point 506 with respect to the second direction. The distance Y3 may be half of the distance Y1 between the cover plate 431 and the fan housing 410. Similarly, the distance Y2 between the fan housing 410 and the inflection point 506 in the second direction may be half of the distance Y1 between the cover plate 431 and the fan housing 410. That is, with respect to the second direction, the distance Y3 between the cover plate 431 and the inflection point 506 may be equal to the distance Y2 between the fan housing 510 and the inflection point 506.

Meanwhile, the cutoff part 435 may be rounded with respect to the first direction, whereby the discharge guide wall 434 may extend in a direction opposite to one end of the flow guide wall 432.

The cutoff part 435 may have a maximum curvature in the outline 701 with respect to the first direction. In more detail, the curvature of the first connection portion 702 in the first direction and the curvature of the second connection portion 703 in the first direction may be increased closer to the outline 701, respectively. You can converge to the maximum curvature.

The maximum curvature is preferably 5% of the diameter (G) of the impeller 485.

The maximum curvature may be kept constant along the outline 701. That is, the curvature of the first direction in the linear part 704 and the curvature of the first direction in the round part 705 may be the same.

Meanwhile, the first connector 702 and the second connector 703 may each include a 3D curved surface. Here, the three-dimensional curved surface may mean a curved surface having a predetermined curvature with respect to the first direction and the second direction, and may also be called a free curved surface.

39 is a graph illustrating a change in noise according to the air volume of a blowing fan installed in a conventional housing cover and a blowing fan installed in a housing cover according to another embodiment of the present invention.

Referring to FIG. 39, it can be seen that the conventional blowing fan (a) has a greater noise generated than the blowing fan (b) according to the present embodiment for all the air flow rates.

In particular, the conventional blower fan (a) was measured by the noise of 34.3dB when the air flow rate is 3.7CMM, the blower fan (b) according to the present embodiment measured the noise of 32.0dB when the air flow rate is 3.7CMM, the maximum 2.3 dB noise reduction effect was confirmed.

40A is a graph illustrating a change in noise according to an operating frequency of a blowing fan installed in a conventional housing cover as a comparative example, and FIG. 40B is a change in noise according to an operating frequency of a blowing fan installed in a housing cover according to another embodiment of the present invention. Is the graph shown.

40A and 40B, it can be seen that the noise of a specific frequency generated in the conventional blower fan is reduced in the blower fan according to the present embodiment.

More specifically, in a conventional blower fan, a 20 dB first noise peak P1 having a first frequency between 500 Hz and 1000 Hz was measured, and a 0 dB second noise peak having a second frequency between 1500 Hz and 2000 Hz was measured. (P2) was measured.

On the other hand, in the blower fan according to the present embodiment, a third noise peak P3 of less than 10 dB with the first frequency was measured, and a fourth noise peak P4 of less than -10 dB with the second frequency was measured. . That is, it can be seen that the noise at each of the first frequency and the second frequency is significantly increased.

41A is a view illustrating an outline of a cutoff of a conventional housing cover as a comparative example, and FIGS. 41B to 41D show an outline of a cutoff of a housing cover according to another embodiment of the present invention, depending on the position of an inflection point. 42 is a graph showing a change in noise according to the air volume of the blowing fan installed in each housing cover shown in FIGS. 41A to 41D.

The outline 701 'of the cutoff 435' shown in FIG. 41A has a vertical line shape.

In the outline 701 of the cutoff 435 shown in FIG. 41B, an inflection point 706 may be located at 20% of the height. That is, the height (0.2 * Y1) of the linear portion 704 may be 0.2 times the height (Y1) of the outline 701, and the height (0.8 * Y1) of the round portion 705 is the height of the outline 701. It may be 0.8 times the height (Y1).

In the outline 701 of the cutoff 435 shown in FIG. 41C, an inflection point 706 may be located at 50% of the height. That is, the height 0.5 * Y1 of the linear part 704 and the height 0.5 * Y1 of the round part 705 may be 0.5 times the height Y1 of the outline 701, respectively.

In the outline 701 of the cutoff 435 shown in FIG. 41D, the inflection point 706 may be located at 80% of the height. That is, the height (0.8 * Y1) of the linear portion 704 may be 0.8 times the height (Y1) of the outline 701, and the height (0.2 * Y1) of the round portion 705 is the height of the outline 701. It may be 0.2 times the height Y1.

Referring to Figure 42, it can be seen that the blowing fan (b) (c) (d) installed in the housing cover 430 according to the present embodiment is reduced in noise compared to the blowing fan (a) installed in the conventional housing cover. .

Hereinafter, for convenience, a blower fan installed in the housing cover having the outline 701 shown in FIG. 41B is referred to as a first blower fan b, and a blower fan installed in the housing cover having the outline 701 in FIG. 41C is referred to. As the second blowing fan c, the blowing fan provided in the housing cover having the outline 701 in Fig. 41D is referred to as the third blowing fan d.

On the basis of the case where the air volume is 5.3 CMM, the noise of 41.7 dB was measured in the blowing fan a installed in the conventional housing cover, the noise of 40.9 dB was measured in the first blowing fan b, and the second A noise of 40.4 dB was measured in the blowing fan c, and a noise of 41.4 dB was measured in the third blowing fan d. That is, the first blowing fan (b) is reduced by 0.8dB, the second blowing fan (c) is 1.3dB is reduced compared to the blowing fan (a) provided in the conventional housing cover, the third blowing fan (d) shows that 0.3 dB is reduced.

In conclusion, the blowing fan (b) (c) (d) installed in the housing cover 430 according to the present embodiment has a noise reduction effect compared to the conventional blowing fan (a), in particular the height of the outline 701 If the inflection point 706 is located at 50% of the noise reduction effect may be the most excellent.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

10: humidifying air cleaner 30: depression
100: cabinet 101: base
103: side panel 105: top panel
107: rear panel 107: grill mounting groove
109: discharge part 109A: non-ejection part
170: discharge grill 175: grill guide portion
200: door assembly 225: suction part
330: humidification filter 410: fan housing
430: housing cover 432: flow guide wall
433: extension guide wall 434: discharge guide wall
435: cut-off portion 436: extension plate
436a: step rib 480: blowing fan

Claims (15)

A cabinet having a blowing fan;
A door assembly coupled to the cabinet to be pulled out in a direction away from the blower fan;
An air filter installed in the door assembly;
A discharge unit formed at an upper portion of the cabinet and discharging air passing through the air filter; And
A guide wall for guiding air passing through the blower fan to the discharge unit, and includes a scroll housing for receiving the blower fan under the discharge unit,
The guide wall,
A guide extending away from the blower fan along a rotation direction of the blower fan;
A second guide extending upwardly from one end of the first guide;
A third guide extending obliquely upward from the other end of the first guide; And
And a cutoff part formed between the first guide and the third guide and extending inclined in the front-rear direction. The method of claim 1,
The inner circumferential surface of the cut-off portion is a humidified air cleaner which is formed of a curved surface which is repeatedly recessed and protruded. The method of claim 1,
A first discharge passage defining a space between the first guide and the blowing fan; And
And a second discharge passage extending from the first discharge passage to the discharge portion and defining a space between the third guide and the second guide. The method of claim 3, wherein
The cut off portion,
And a boundary surface through which air is discharged from the first discharge passage to the second discharge passage or air is resorbed into the first discharge passage. The method of claim 4, wherein
The cutoff part, the humidifying air cleaner is formed so that the rear end protrudes toward the second discharge passage. The method of claim 1,
The cut off portion,
Humidified air extending to form a curve having an inflection point from the rear end contact point to which the rear end of the first guide and the rear end of the third guide are connected to the front end contact point to which the front end of the first guide and the third guide are connected. Purifier. The method of claim 6,
The rear end contact is humidified air cleaners located inwardly than the front contact. The method of claim 1,
The third guide,
Humidifying air cleaners extending inclined in the front and rear direction so that the rear end of the third guide is located inside the front end of the third guide. The method of claim 1,
The scroll housing further includes a cover plate connecting the rear end of the guide wall,
The third guide is humidifying air cleaners extending toward the discharge plate toward the vertical perpendicular to the cover plate. The method of claim 1,
The cut off portion,
It is formed round to the first direction defined in the direction for connecting the first guide and the third guide,
And at least a portion of the humidifying air purifier formed round in a second direction defined in a direction connecting the front end and the rear end of the cut-off part. The method of claim 1,
The blower fan, humidifier air purifier including an impeller having a plurality of blades that rotate to provide air blowing. The method of claim 11,
The minimum distance (g) of the cut-off part and the impeller is not less than 8% and less than 10% of the diameter (G) of the impeller. The method of claim 11,
The blade of the impeller,
A maximum camber point defined as one point of the negative pressure surface, corresponding to a point having a maximum camber in the average camber line; And
A reference point defined as another point of the negative pressure surface, the distance between the negative pressure surface and the pressure surface being maximum,
The negative pressure surface, the humidifying air cleaner comprising a linear surface formed as a flat surface from the maximum camber point to the leading edge. The method of claim 13,
The linear surface,
A first linear surface positioned between the reference point and the leading edge; And
A second linear surface located between the reference point and the maximum camber point,
The humidifier air purifier of claim 1, wherein an angle between the first linear surface and the second linear surface is an obtuse angle. The method of claim 13,
The distance DL between the leading edge and the reference point is 0.21 times to 0.27 times the demonstration length CL.

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