KR102150333B1 - Apparatus for both humidification and air cleaning - Google Patents

Abstract

The humidifying air purifier according to the present embodiment includes: a cabinet with an opening formed thereon; And a scroll housing disposed below the opening in the cabinet and having a blowing fan therein.
The scroll housing includes: a flow guide wall formed to be rounded to surround a portion of an outer circumference of the blowing fan; An extension guide wall extending from one end of the flow guide wall toward the opening; A discharge guide wall extending from the cut-off portion formed at the other end of the flow guide wall toward the opening portion and inclined in a direction away from the extending guide wall as the opening portion approaches; And an extension plate horizontally extending from an upper end of the discharge guide wall in a direction away from the extension guide wall and located below the opening portion.

Description

{Apparatus for both humidification and air cleaning}

The present invention relates to a humidified air purifier.

The air purifier is understood as a device that sucks and purifies contaminated air and then discharges the purified air. As an example, the air purifier may include a blower for introducing external air into the air purifier, and a filter capable of filtering dust or bacteria in the air.

A humidifier is understood as a device that sucks air in, humidifies it, and then discharges it in order to provide moisture to the air. Conventional humidifiers are divided into a vibration type that atomizes water from a vibration plate and discharges it into the air, and a natural evaporation type that evaporates naturally from a humidification filter. The natural evaporative humidifier is a disk-type humidifier that rotates a disk by using a driving force, and water naturally evaporates from the surface of the disk in the air, and a humidification filter-type humidifier that is naturally evaporated by air flowing in a humidifying medium moistened with water It is distinguished.

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

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

Since the intake ports are formed at the upper, lower, left, and right edges of the front panel, air sucked from different directions may interfere with each other, so that the flow of air sucked into the body may not be smooth.

In addition, the inlet may damage the appearance of the humidified air cleaning device.

In addition, since there is no structure to guide the air blown by the blowing means upward, only a part of the air blown by the blowing means is discharged to the upper discharge port, and other parts are stagnant in the body, resulting in a decrease in efficiency.

In addition, since the discharge port is opened during operation of the humidified air cleaning device, large foreign matter may enter the discharge port. In addition, if the user's body enters, there is a risk of injury due to the rotating blower.

In addition, a vane that adjusts the discharging angle of the humidified air is arranged at the discharge port, but if the vane is tilted back, the wall located at the rear of the humidifying air cleaning device is moistened by the humidified air discharged through the discharge port, causing mold, etc. have.

In addition, when the humidified air cleaning device is placed next to the bed, humidified air from the discharge port is directly discharged toward the user's face or head, thereby causing discomfort to the user.

JP 2011-226670A (released on 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 an indoor use environment.

The humidification air purifier according to the present embodiment may include a discharge grill 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. Accordingly, since the air discharged from the discharge unit is guided upwardly forward by the plurality of grill guide units, it is possible to prevent the wall located at the rear of the humidifying air purifier from being humid. In addition, it is possible to prevent foreign matters larger than a certain size from flowing into the discharge part.

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

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, a top panel and a rear panel respectively connecting the pair of side panels; A door assembly coupled to be retractable from the front of the cabinet and spaced upwardly from the base; A recessed portion located between the lower end of the door assembly and the base and recessed rearward; A suction part located on the upper side of the recessed part, formed on the bottom surface of the door assembly, and communicating with the interior of the cabinet; A humidifying filter disposed inside the cabinet; A discharge unit located at the rear side of the upper panel and through which the air passing through the humidification filter is discharged; And a discharge grill having a plurality of grill guide parts formed obliquely in a direction toward the front toward the upper side and covering the discharge part from the upper side.

In addition, the plurality of grill guide portions are spaced apart from each other in the front-rear direction and may maintain a certain angle with respect to a virtual vertical line. As a result, air can be constantly discharged to the front and upper sides, so that the wall located at the rear of the humidifying air purifier can be prevented from getting 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 vertically through the upper surface portion of the rear panel. Accordingly, the discharge portion is located at the rear of the top panel, and the top portion of the rear panel can be easily connected to the top panel.

Further, a grill installation groove which is recessed downward and in which the discharge grill is seated may be formed in the upper surface of the rear panel. Accordingly, the discharge grill can be stably seated and installed in the grill installation groove.

Meanwhile, in the humidified air purifier according to the present exemplary embodiment, an opening including a discharge portion is formed at an upper portion of the cabinet, and a scroll housing having a blowing fan therein may be located under the opening portion. As a result, the humidified air blown by the blowing fan can be guided to the open portion while minimizing the loss of flow by the scroll housing, so that the efficiency of the blowing fan can be increased.

In addition, the extension guide wall may be formed to be elongated in the vertical direction, and the discharge guide wall may be formed to be inclined in a direction away from the discharge guide wall as it goes upward. 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 one side panel. According to the above configuration, the inclination of the discharge guide wall may be closer to the vertical than the horizontal, and the air flow guided by the discharge guide wall may be prevented from being discharged close to the horizontal with respect to the left and right directions.

In more detail, the humidification 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 respectively connecting the pair of side panels. ; An opening formed on the top of the cabinet; And a scroll housing disposed below the opening in the cabinet and having a blower fan therein. The scroll housing may include a flow guide wall formed to be rounded to surround a part of the outer circumference of the blowing fan; An extension guide wall positioned close to one of the pair of side panels and extending upward from one end of the flow guide wall; It may include a discharge guide wall located close to the other side panel among the pair of side panels and extending obliquely in a direction away from the extension guide wall from a cut-off portion formed at the other end of the flow guide wall toward an upper side. A horizontal distance between an upper end of the discharge guide wall and the other side panel may be greater than a horizontal distance between an upper end of the extension guide wall and the one side panel.

In addition, the 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 close to the horizontal with respect to the left and right directions.

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 vertically through the upper surface portion of the rear panel.

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

In addition, the opening portion may include a discharge part facing a space between the extending guide wall and the discharge side wall in a vertical direction; And it may include a non-discharge portion facing the extension plate in the vertical direction.

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

In addition, it may further include a discharge grill having a plurality of grill guide portions formed obliquely in a direction toward the front toward the upper side and covering the opening portion from the upper side.

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

In addition, a part of the discharge grille may cover the discharge part and another part of the discharge grille may cover the non-discharge part.

In addition, a step rib may be formed on the extension plate to support the discharge grill.

Meanwhile, the humidification air purifier according to the present embodiment may include a scroll housing including an extension plate that extends horizontally from an upper end of the discharge guide wall in a direction away from the extension guide wall and is located below the opening part. Accordingly, 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 close to the horizontal with respect to the left and right directions.

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

In addition, it may further include a discharge grill having a plurality of grill guide portions formed obliquely in a direction toward the front toward the upper side and covering the opening portion from the upper side.

A step rib for supporting the discharge grill may be formed on the extension plate.

The opening portion may include a discharge part facing a space between the extending guide wall and the discharge side wall in an up-down direction; And it may include a non-discharge portion facing the extension plate in the vertical direction.

The area of the discharge part may be larger than the area of the non-discharge part.

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

According to the present embodiment, humidified air discharged from the discharge portion by the discharge grill may be discharged to the front and upper side. As a result, it is possible to prevent the wall located at the rear of the humidifying air purifier from getting wet, and mold due to moisture may not occur on the wall.

In addition, the plurality of grill guide portions of the discharge grill are spaced apart from each other in the front-rear direction and maintain a constant angle with respect to a virtual vertical line, so that the humidified air discharged from the discharge port is always discharged forward and upward. In addition, it is possible to prevent foreign substances of a certain size or more or the body of the user from entering the discharge port.

In addition, since the extension plate is formed to extend horizontally from the upper end of the discharge guide wall, the inclination of the discharge guide wall may be formed more steeply compared to the case where the extension plate is not formed. Accordingly, air guided by the discharge guide wall inclined to the left and right to form the scroll flow path can be discharged close to the vertical with respect to the left and right direction. Therefore, when the humidified air purifier is used next to the bed, there is an advantage in that the humidified air discharged from the discharge unit does not go directly to the user's head or face, so that the user may not feel unpleasant.

In addition, the horizontal distance between the upper end of the discharge guide wall and the side panel adjacent thereto may be greater than the horizontal distance between the upper end of the extension guide wall and the adjacent side panel. As a result, a space in which the extension plate is positioned between a pair of side panels can be secured.

In addition, the upper end of the discharge guide wall may overlap the flow guide wall in the vertical direction. As a result, compared to the case where the upper end of the discharge guide wall is formed outside the flow guide wall, the extension plate extending from the upper end of the discharge guide wall can be formed sufficiently long.

In addition, the opening portion may include a discharge portion directed to the inside of the scroll housing in the vertical direction, as well as a non-discharge portion directed to the extension plate in the vertical direction. Accordingly, since the opening portion is not formed to be deflected to one side with respect to the left and right directions, the appearance of the humidified air purifier can be improved aesthetically.

In addition, humidified air may spread and flow from the discharge port of the scroll housing to the discharge part. Accordingly, compared to a case where the opening portion is composed of only 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 smoothly discharged through the opening portion without being blocked.

Also, the area of the discharge portion may be larger than the area of the non-discharge portion. This allows humidified air to be discharged smoothly.

In addition, some of the discharge grilles may cover the discharge part and the other part may cover the non-discharge part. Accordingly, since the discharge grill covers even the non-discharge portion, the appearance of the humidified air purifier can be improved aesthetically.

In addition, by forming a step rib for supporting the discharge grill on the extension plate, the discharge grill may be supported more stably.

1 is a perspective view showing the configuration of a humidified air purifier according to an embodiment of the present invention.
2 is a view showing a door of the humidified air purifier according to an embodiment of the present invention is opened.
3 is an exploded perspective view showing the configuration of a humidified air purifier according to an embodiment of the present invention.
4 is an exploded perspective view showing a partial configuration of a humidified air purifier according to an embodiment of the present invention.
5 is a view showing a bottom configuration of a 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 an air filter and a water container disposed on a door according to an exemplary embodiment of the present invention.
8 is a view showing a state in which a filter disposed on a door is separated according to an embodiment of the present invention.
9 is a perspective view of a door assembly according to an embodiment of the present invention.
10 is a top view of a door assembly according to an embodiment of the present invention.
11 is a view showing the interior of a cabinet according to an embodiment of the present invention.
12 is an exploded perspective view showing a housing assembly and a peripheral configuration thereof according to an embodiment of the present invention.
13 is a rear perspective view of a fan housing according to an embodiment of the present invention.
14 is an exploded perspective view of a blowing fan and a housing cover according to an embodiment of the present invention.
FIG. 15 is an enlarged view of A of FIG. 14.
16 is a view showing a partial configuration of a housing cover according to an embodiment of the present invention.
17A and 17B are experimental graphs showing a comparison of the flow of discharged air according to the presence or absence of an extension plate of the humidified air purifier according to an 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 an embodiment of the present invention.
20A is a view showing a shape of a blade of a conventional impeller as a comparative example.
20B is a view showing a shape of a blade according to an embodiment of the present invention.
21 is a graph showing a change in noise according to an air volume of a conventional impeller and an impeller according to an embodiment of the present invention.
22 is a graph showing noise for each air volume according to a setting angle TH of a blade according to an embodiment of the present invention.
23 is a graph showing noise for each air volume according to a set length DL of a blade according to an embodiment of the present invention.
24 is a perspective view showing a rear configuration of a housing cover according to an embodiment of the present invention.
25 is a view showing a sensor device mounted on a housing cover according to an embodiment of the present invention.
26 is a diagram showing a 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 a rear panel according to an embodiment of the present invention.
29 is a diagram illustrating a state in which a discharge grill is removed from an upper surface of a rear panel according to an embodiment of the present invention.
30 is an enlarged view illustrating a partial configuration of a rear panel according to an embodiment of the present invention.
31A and 31B are experimental graphs showing the comparison of the flow of discharged air according to the inclination of the grill guide part of the discharge grill according to an embodiment of the present invention.
32 is a cross-sectional view showing the flow of air in the humidified air purifier according to an embodiment of the present invention.
33 is a schematic diagram showing a partial configuration of a humidified air purifier according to an embodiment of the present invention.
34 is a schematic diagram showing air flow in a humidified air purifier according to an embodiment of the present invention.
35 is a front view showing a housing cover according to another embodiment of the present invention.
36 is an enlarged view illustrating a cut-off of the housing cover shown in FIG. 35.
37A is a perspective view showing a conventional housing cover as a comparative example.
37B is a perspective view illustrating a housing cover according to another embodiment of the present invention.
38A is a view showing an outline of a cut-off of a conventional housing cover as a comparative example.
38B is a diagram illustrating an outline of a cut-off of a housing cover according to another embodiment of the present invention.
39 is a graph showing a change in noise according to an air volume of a conventional blowing fan installed on a housing cover and a blowing fan installed on a housing cover according to another embodiment of the present invention.
40A is a graph showing changes in noise according to the operating frequency of a blower fan installed in a conventional housing cover as a comparative example.
40B is a graph showing 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.
41A is a diagram illustrating an outline of a cut-off of a conventional housing cover as a comparative example.
41B to 41D are views illustrating an outline of a cut-off of a housing cover according to another embodiment of the present invention according to a position of an inflection point.
42 is a graph showing a change in noise according to an air volume of a 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 through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, when it is determined that a detailed description of a related known configuration or function interferes with an understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When 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 another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

1 is a perspective view showing a configuration of a humidified air purifier according to an embodiment of the present invention, and FIG. 2 is a view showing a door of the humidified air purifier according to an embodiment of the present invention opened.

1 and 2, a humidified air purifier 10 according to an embodiment of the present invention includes a cabinet 100 forming an exterior and a door assembly 200 that is retractably 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 the side panels 103 at both sides. It includes a top panel 105 coupled to the upper side and a rear panel 107 coupled to the rear side of the side panels 103 on both sides. By the base 101, the two side panels 103, the top panel 105, and the rear panel 107, the cabinet 100 may have a rectangular parallelepiped shape with an open front portion.

Since the plurality of panels are made of wood and can give the aesthetic sense of furniture in appearance, the appearance can be improved.

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

The door assembly 200 may be provided to be pulled out to the front of the cabinet 100 to be opened, or to be pulled in to the rear to be closed. The door assembly 200 includes a door panel 210 constituting a front portion of the humidified air purifier 10.

For example, the door panel 210 may have a shape of a square plate. In addition, when the door assembly 200 is closed, the door panel 210 forms the front surface of the humidified air purifier 10. The door panel 210 may be made of wood so as to feel an aesthetic feeling like furniture.

Between the lower end of the door panel 210 and the base 101, a recessed portion 30 that is recessed rearward is formed. In addition, a suction part 225 for sucking air into the cabinet 100 is formed on the upper side of the depression 30.

A discharge part 109 through which filtered and humidified air is discharged is formed on the rear side of the top panel 105 of the cabinet 100. The discharge part 109 may be located at a rear upper portion of the humidified air purifier 10.

The door assembly 200 further includes an accommodating part 220 extending from the rear surface of the door panel 210 to the rear, and in which a component of the humidifying air purifier 10 is installed. The components may include an air filter assembly 280, a humidification filter assembly 300, and a water bottle 270.

When the door assembly 200 is drawn forward and opened, the air filter assembly 280, the humidification filter assembly 300, and the bucket 270 disposed in the receiving unit 220 may be drawn forward together. . Therefore, the user can easily access the air filter assembly 280, the humidification filter assembly 300, and the water bottle 270.

The door assembly 200 further includes a rail guide 230 for guiding the withdrawal or retraction 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 a configuration of a humidified air purifier according to an embodiment of the present invention, Figure 4 is an exploded perspective view showing a partial configuration of the humidified air purifier according to an embodiment of the present invention, and Figure 5 is an implementation of the present invention A diagram showing a bottom configuration of a bucket according to an example, and FIG. 6 is a cross-sectional view taken along VI-VI' of FIG. 1.

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

In detail, the cabinet 100 includes a body portion 110 forming a space portion 112 in which components of the air purifier are disposed.

The front portion of the body portion 110 is opened, and the opened front portion may be shielded by the door assembly 200. The rear portion of the body portion 110 is 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, and the open upper portion may be shielded by the electric device 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 electric part 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 exterior and a receiving portion 220 extending to the rear of the door panel 210. The receiving portion 220 includes a door front portion 221 coupled to the rear surface of the door panel 210. The combination of the door panel 210 and the door front portion 221 may be referred to as a “door front portion”.

The receiving portion 220 includes a door side portion 222 extending rearward from both sides of the door front portion 221, a door lower surface portion 224 provided under the door side portion 222, and a lower surface of the door. A door rear part 223 (refer to FIG. 7) extending upward from the rear side of the part 224 is included. By the door front portion 221, the door bottom portion 224, the door side portion 222, and the door rear portion 223, a water tank 260, a water tank 270 inside the receiving portion 220 , 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 a front portion of the receiving part 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 arranged to be lifted upward and separated.

A water container 270 may be disposed at an approximately central portion of the receiving portion 220, that is, a rear side of the air filter assembly 280 based on the front-rear direction. The bucket 270 may be installed inside the water tank 260. The bucket 270 may be lifted upward and disposed to be separated, and a user may separate the bucket 270 to supplement water or wash the bucket 270.

A valve hole 275a for discharging water is formed in the bottom portion 275 of the water container 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 is operated to open the valve hole 275a when placed on a valve support part (not shown) provided in the water tank 260, and close the valve hole 275a when separated from the valve support part. can do.

The water tank 260 may have a substantially hexahedral shape with an open top. A water container support part 261 supporting the water container 270 is included in the lower portion of the water tank 260. The water container support part 261 forms a flat surface.

The water tank 260 further includes a float receiving portion 262 protruding downward from the water tank support portion 261 and having a space in which a float device 267 is installed. The float receiving part 262 has a hollow shape in which the inside is empty, and for example, may be located at an approximately central part of the water container support part 261.

The float receiving part 262 forms a first water storage part 262a in which water is stored, and the float device 267 is able to move vertically according to the level of water stored in the first water storage part 262a. It can be provided. When the water level of the first reservoir 262a is higher than the set level, the float device 267 may move upward to block the valve hole 275a of the water container 270.

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

The humidification filter assembly 300 may be installed in the second water storage unit 229. The lower portion of the humidification filter 330 included in the humidification filter assembly 300 may be disposed so as to be immersed in the second water storage portion 229.

The humidification filter 330 has a substantially circular shape, and a collection part 332 (refer to FIG. 7) having a structure capable of containing water is included in the outer circumference of the humidification filter 330. A plurality of collection units 332 may be provided. For example, the humidification filter 330 may have a structure similar to that of a "watermill".

The humidification filter 330 is rotatably provided, and the water collected by the collection unit 332 moves upward, and when the collection unit 332 descends from the uppermost end of the humidification filter 330, gravity As a result, water flows into the central portion of the humidification filter 330. The humidification filter 330 may be made of a cloth, felt, or sponge material that facilitates moisture absorption.

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

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

The humidified air purifier 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, see FIG. 16) defined by the fan housing 410 and the housing cover 430.

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

The blowing 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-rear direction.

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

The humidified air purifier 10 further includes an electric part 450 provided with a plurality of electric parts 453. The electric part 450 further includes an electric plate 451 covering the open upper part of the body part 110, and the electric part 453 may be installed on the upper surface of the electric plate 451. . In addition, the electrical device 450 may further include an electrical cover 455 that shields at least a portion of the plurality of electrical components 453.

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

A rail assembly 235 may be installed inside the body part 110 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.

Further, a rail cover 236 is disposed outside the rail assembly 235. Due to 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 so that it is not exposed to the space 112.

A lighting bracket 116 on which a lighting device is installed is further included under the body part 110. The lighting bracket 116 may be disposed to be spaced apart from the 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 a lighting PCB 122 provided with a lighting source and a lighting case 124 coupled to the lighting PCB 122. A plurality of lighting sources may be provided. In addition, the lighting case 124 includes a partition rib that divides the inner space of the lighting case 124 into a plurality of spaces, and an illumination source may be disposed in each of the plurality of spaces.

A 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 softly reflect or diffuse light irradiated 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 reflective plate 120.

7 is a view showing a state in which an air filter and a water container are disposed on a door according to an embodiment of the present invention, and FIG. 8 is a view showing a state in which a filter disposed on the door according to an embodiment of the present invention is separated, and FIG. 9 is a perspective view of a door assembly according to an embodiment of the present invention, FIG. 10 is a top view of the door assembly according to the embodiment of the present invention, and FIG. 11 is a view showing the interior of a cabinet according to an embodiment of the present invention. .

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

An air filter assembly 280, a humidification filter assembly 300, a water tank 270, and a water storage tank 260 may be installed in the accommodating part 220.

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

A suction part 225 through which air is sucked is formed on the lower surface of the door 224. The suction part 225 is located at the rear side of the door front part 221, and at least a portion of the door lower surface 224 may be formed to pass through. Air outside the humidified air purifier 10 is sucked into the suction unit 225 via the depression 30. In addition, the inhaled air may flow upward.

An air filter seating portion 226 on which the air filter assembly 280 is seated is included in the lower surface of the door 224. The air filter seating portion 226 is located at the rear side of the suction portion 225 and configures a flat surface so that the bottom surface of the air filter assembly 280 can be seated.

The door side portion 222 includes a filter guide 225a supporting the side portion of the air filter assembly 280. The filter guide 225a may extend upward from both sides of the air filter seating portion 226, and may extend obliquely forward from a lower portion thereof toward an upper portion. Accordingly, the air filter assembly 280 may be disposed obliquely to the front while seated on the filter seating portion 226, whereby the user lifts the air filter assembly 280 upward and the It can be easily separated from the receiving portion 220.

The door side portion 222 further includes a filter support portion 225b extending in a left-right direction from the filter guide 225a and supporting a part of the front portion of the air filter assembly 280. The filter support part 225b may function as a “supporting jaw” that supports the air filter assembly 280 so as not to fall forward in a state in which the air filter assembly 280 is disposed in an inclined manner.

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

A through hole 228 in which the sterilizing device 269 is disposed is formed in the rear portion 223 of the door. For example, the sterilizing device 269 may be disposed inside the through hole 228 or may be disposed behind the through hole 228. The light irradiated from the sterilization device 269 is transmitted to the water tank 260 via the through hole 228 to sterilize the stored water.

A water tank 270 is disposed above the water tank 260. 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 can remove the bucket cover and replenish water in the inside of the bucket body.

When the water tank 270 is placed in the water tank 260, the float device 276 of the water tank 270 is opened, and the water stored in the water tank 270 flows into the reservoir of the water tank 260. I can.

The humidification filter assembly 300 may be installed in the water tank 260. The humidification filter assembly 300 may be positioned at a rear side of the water container 270, and a lower portion of the humidification filter assembly 300 may be disposed to be immersed in the second storage unit 229.

The humidification filter assembly 300 includes a humidification filter case 310 having a shaft support part 315 and a humidification filter 330 having a central shaft 335 supported by the shaft support part 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 collection unit 332 for pumping up water stored in the second storage unit 229 of the water tank 260. The water pumped from the collection unit 332 moves upward while the humidification filter 330 is rotated, and may flow down to the humidification filter 330 when it descends again. Water flowing down the humidification filter 330 may penetrate into the humidification filter 330.

In the humidification air purifier 10, as a driving device for rotating the humidification filter 330, a humidification filter driving gear coupled to the humidification filter motor 353 (see FIG. 6) and the humidification filter motor 353 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 interlocking with the humidification filter driving gear 355. The filter gear 338 is provided on an outer circumferential surface of the humidification filter 330, and the humidification filter driving gear 355 and a gear may be coupled. When the humidification filter motor 353 is driven, the filter gear 338 may rotate in a clockwise or counterclockwise direction in association with the humidification filter driving gear 355.

12 is an exploded perspective view showing 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 an air blower according to an embodiment of the present invention It is an exploded perspective view of the fan and the housing cover.

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

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

A fan suction part 415 through which air is sucked is formed on the housing plate 411. The fan suction unit 415 may include a suction guide rib extending radially or circumferentially. For example, the fan suction unit 415 may be located in the center of the housing plate 411.

Air in the body part 110 may pass through the fan suction part 415 and flow toward the housing cover 430.

An electrical plate 451 on which a plurality of electrical components are installed may be coupled to an upper portion of the housing plate 411. The electric plate 451 may be integrally formed with the housing plate 411. For example, the electric 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 from the rear. In addition, the flow direction of air forced by the blowing 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 part 413 on 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 in the center of the fan suction part 415. In addition, the fan motor mounting part 413 is formed to have a cylindrical shape in which the inside is empty with respect to 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 from the rear surface of the housing plate 411.

The fan motor mounting part 413 may form a fan motor installation space 413a in which the fan motor 483 is accommodated. In addition, the impeller 485 of the blowing fan 480 may be positioned outside the fan motor mounting part 413.

The fan housing 410 further includes a restraining rib 417 that guides the coupling of the housing cover 430. The restraining rib 417 may form a space or groove so that the front surface of the housing cover 430 is in close contact with the rear surface of the housing plate 411.

The constraining rib 417 guides the housing cover 430 so that it can 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 or fixed in the constraining rib 417 to guide the flow of air into the inner space. can do. That is, since the front surface of the housing cover 430 is in close contact with the rear surface of the housing plate 411, an internal space may be formed between the fan housing 410 and the housing cover 430, and A flow path for air passing through the blowing fan 480 may be formed.

The restraining rib 417 is formed to protrude from the rear surface of the housing plate 411. In addition, the restraining rib 417 may extend to correspond to the front end of the housing cover 430.

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

Meanwhile, the blowing fan 480 may include an impeller 485 for suction and discharge of air.

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

In addition, the blowing 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 mounting part 413.

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

An opening is formed in the center of the motor cover 482 through which the rotation shaft of the fan motor 483 passes and is connected to the locking part 481. That is, the motor cover 482 may be positioned between the fan motor 483 and the locking part 481.

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

The cover plate 431 is disposed to be spaced apart from the rear of the fan housing 410. In addition, the guide walls 432, 433, 434 extend toward the fan housing 410 on the front surface of the cover plate 431, thereby forming 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 an edge of the front surface of the cover plate 431.

Accordingly, the guide walls 432, 433, and 434 may contact the rear surface of the fan housing 410. For example, a front end portion of the guide walls 432, 433, and 434 may be disposed to contact or insert into the constraining rib 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 pass through a scroll passage that can guide the flow of air forced by the blowing fan 480. Can be formed.

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

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

Here, the air flow path introduced 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 and the discharge part 109 The air flow path flowing into the flow path is called a discharge flow path.

In addition, the discharge passage is a first discharge passage 430a flowing according to a guide of a flow guide wall 432 to be described later, and a second discharge passage flowing to the open end 431a according to a guide of the extension guide wall 433 ( 430b).

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

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

Accordingly, air discharged from the blowing fan 480 in the radial direction may flow to the upper portion of the housing cover 430, that is, the open end 431a. In addition, the air flowing to the top of the housing cover 430 is discharged to the outside through the discharge unit 109.

Here, an opening formed at 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 through which air is discharged to the discharge part 109 by being located downstream of the second discharge passage 430b.

In addition, the guide walls 432, 433, and 434 may extend in a shape corresponding to the restraining rib 471. For example, the guide walls 432, 433, and 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 curved shape as a whole so as to correspond to the constraining 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. Here, the flow guide wall 432 may be referred to as a “first guide”, the extended guide wall 433 may be referred to as a “second guide”, and the discharge guide wall 434 may be referred to as a “third guide”.

The extension guide wall 433 may extend downward from an upper end 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 downward along the side end of the cover plate 431.

Here, the first point is located at the side end of the cover plate 431, and a first angle preset along the air flow direction F from the vertical reference line D with the reference point O to be described later as the center 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 be formed to extend upward from one end of the flow guide wall 432, that is, the first point.

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

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

In more detail, the flow guide wall 432 may extend roundly from the first point to the second point (cut-off part 435). The second point may be located above the first point. In addition, the second point may be understood as a point where the cut-off portion 435 is formed.

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

That is, the flow guide wall 432 may extend continuously in a direction in which an arc is drawn around the reference point O from the lower end of the extension guide wall 433 to the cut-off part 435.

The discharge guide wall 434 may extend obliquely in a direction away from the extension guide wall 433 as a cut-off part 435 formed at the other end of the flow guide wall 432, that is, from the second point upwards.

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

In more detail, the discharge guide wall 434 may extend from the cut-off part 435 to one end of the extension plate 436. The rear end 432a of the flow guide wall 432 (refer to FIG. 16) is continuously connected to the rear end 434a of the discharge guide wall 434, and the front end 432b of the flow guide wall 432, 16) may be continuously connected to the front end 434b of the discharge guide wall 434.

The discharge guide wall 434 may be formed to have an inclined inner circumferential surface. That is, the rear end 434a of the discharge guide wall 434 may be located inside the front end 434b of the discharge guide wall 434. Accordingly, the inner circumferential surface of the discharge guide wall 434 formed by extending from the rear end 434a of the discharge guide wall 434 to the front end 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 cover 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 long. (See Fig. 15)

The horizontal distance between the connection portion between the discharge guide wall 434 and the extension plate 436, that is, 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 and the one side panel (left side panel) 103. This is because the extension plate 436 extends toward the other side panel (right side panel) 103 from the upper end of the discharge guide wall 434.

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

A cut-off portion 435 may be formed on the guide walls 432, 433, and 434. The cut-off part 435 may be formed so that the flow guide wall 432 and the discharge guide wall 434 are connected in a round shape.

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

In addition, the cut-off part 435 may be understood as a criterion for classifying the first discharge passage 430a and the second discharge passage 430b. Here, the classification of the flow path is not a physical classification, but an arbitrary classification for convenience of explanation. Accordingly, some of the air introduced into the second discharge passage 430b may re-inflow into the first discharge passage 430a while colliding with the cut-off portion 435. In addition, noise may be generated during the collision and re-entry process. A detailed description of the cut-off unit 435 in this regard will be described later with reference to FIG. 15.

Meanwhile, in the guide walls 432, 433, 434, the width W of the air flow path formed inside the housing cover 430, that is, the discharge flow paths 430a, 430b, flows from the cut-off part 435. It can be formed to gradually expand along the direction (F).

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

That is, the width W of the discharge passage may increase from the cut-off part 435 to the open end 431a along the flow direction F of the air. As an example, the distance W1 in the radial direction centered on the reference point O between the cut-off part 435 and the outer circumferential surface of the impeller 485 is one of the other existing 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 in the discharge passage may also be gradually increased along the flow direction F of the air through the cut-off portion 435. Accordingly, the flow resistance of the air passing through the blowing fan 480 may be reduced, and noise generated 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 on both sides and upper portions of the housing cover 430. That is, the coupling bracket 438 may be provided on the outer surfaces of the guide walls 432, 433, and 434.

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

Meanwhile, 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 walls 432, 433, and 434.

That is, the sensor bracket 440 may be installed in a space in which air flow, that is, air is not sucked or discharged 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 such that an opening is formed in an outer direction of the cut-off part 435.

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

A wire connected to a plurality of sensors 500, 550, and 560 mounted on the sensor bracket 440 may be positioned 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 on which a plurality of sensors 500, 550, and 560 are installed, and bracket support portions 443 and 445 that support the bracket body 441.

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

Meanwhile, the reference point O of the housing cover 430 is the same as the center point of the blowing fan 480. Accordingly, the reference point O may be located on the rotation axis S of the blowing fan 480. Here, the rotation shaft S can be understood as a virtual horizontal line drawn forward from the reference point O.

In addition, a virtual vertical line forming a right angle to the rotation axis S is defined as a vertical reference line D. In this case, the reference point O may be understood as a point where the rotation axis S and the vertical reference line D meet, that is, the foot of the repair line. Accordingly, it can be understood as a virtual 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 be introduced in the direction of the rotation axis S and discharged in the direction of the vertical reference line D.

When the flow of air passing through the housing assembly 400 is described in detail, the air introduced into the blowing fan 480 in the direction of the rotation axis S is guided by the fan housing 410 and the housing cover 430. It flows to the open end 431a along the scroll flow path formed by the scroll.

As described above, the air flow path discharged from the blowing fan 480 and directed to the discharge part 109 is discharged from the first discharge flow path 430a and extends along the guide of the flow guide wall 432. It may include a second discharge passage (430b) flowing to the open end (431a) along the guide of the guide wall (433).

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

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

Referring to FIG. 15, the cut-off part 435 is 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. It may be formed to extend to a shear contact point 435b to which the front end portion 432b of the flow guide wall and the front end portion 434b of the discharge guide wall are connected.

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

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

The inner circumferential surface of the cut-off part 435 extending from the rear end contact 435a of the cut-off part 435 to the front end contact 435b may form a curved surface. For example, the inner circumferential surface of the cut-off part 435 may be curved in an up-down direction or a front-rear direction to reduce the flow resistance of the colliding air of the cut-off part 435.

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

In detail, the inner circumferential surface of the cut-off part 435 is a convex part formed to protrude inward from the rear end contact 435a to the cut-off center point O`, and the cut-off center point O` to the shear contact 435b. It may include a recess that is formed to be.

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

If the inner circumferential surface of the above-described cut-off part 435 is expressed differently, the cut-off 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 introduced into the second discharge passage 430b may be re-introduced into the first discharge passage 430a while colliding with the cut-off portion 435. In addition, noise may be generated during the collision and re-entry process.

In detail, the cut-off part 435 refers to an interface between discharge and resuction of the air flow inside the housing cover 430, and the flow distribution of the air colliding in the cut-off part 435 is actually It does not increase linearly along the rotation axis direction (S). Accordingly, the cut-off part 435 may generate an internal flow noise (Blade Pass Frequency, BPF) due to a pressure difference or pressure concentration due to a 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 the air flow impinging on the cut-off portion 435, the advantage of reducing the internal flow noise (BPF) There is this.

On the other hand, the discharge guide wall 434 extends along the discharge direction of the air from the cut-off part 435 and at the same time extends so that the inclination angle formed with the cover plate 431 changes along the discharge direction of the air. Can be.

In detail, the discharge guide wall 434 is the cover plate 431 along the air discharge direction from the cut-off part 435 connecting the rear end contact 435a, the inflection point O′, and the front contact 435b. It can be extended so that the angle of inclination made up with is close to the vertical. As a result, the discharge guide wall 434 may form a three-dimensional shape.

Here, the change of the inclination angle is gradually increased to form a vertical if the inclination angle formed by the cover plate 431 and the discharge guide wall 434 is an acute angle, and gradually decreased to form a vertical if the obtuse angle can do. Accordingly, an end end of the discharge guide wall 434 may be perpendicular to the cover plate 431.

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

16 is a view showing a partial configuration of a housing cover according to an embodiment of the present invention. In detail, FIG. 16 is a view in which the sensor bracket 440 described above 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 part 433a.

The cutting part 433a may be formed such that a height of the upper front end of the extension guide wall 433 decreases upward. In addition, the width of the cutting part 433a may be formed to increase upward.

The cutting part 433a may form a hole so as to be coupled to the upper end of the fan housing 410. The hole may be formed to be fitted with 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 under the openings 109 and 109A (see FIG. 27) and the discharge grill 170.

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

The extension plate 436 may be bent from the discharge guide wall 434 and may extend along the 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 and 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 a discharge grill 170 (refer to FIG. 27 ), which will be described later, is seated. The discharge grill 170 may be supported together with a grill installation groove 107f (see FIG. 27) to be described later through the step rib 436a.

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

In addition, the extension plate 436 may be positioned perpendicular to the cover plate 431. That is, it may be formed to extend from the upper end of the cover plate 431 toward the front by the predetermined length L.

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

For a more detailed description in this regard, it is assumed that the discharge guide wall 434 extends directly from the cut-off portion 435 to an upper end of the cover plate 431 (dotted line).

At this time, the virtual discharge guide wall (V) and the cover plate 431 may extend so that the recessed space formed by bending the extension plate 436 and the discharge guide wall 434 is included in the second discharge passageway 430b. I can.

That is, the discharge port extends from one upper end of the cover plate 341 to the other upper end, and the flow cross-sectional area may also be proportionally enlarged.

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

According to this, the air passing through the discharge part 109 according to the guide of the virtual discharge guide wall V is more 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 flow of the discharged air skewed in the lateral direction.

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

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

Referring to FIGS. 17A and 17B, a flow (pressure) distribution of air discharged from a person lying on a bed (Man) and a humidified air purifier disposed near the bed can be confirmed. At this time, the height of the discharge part 109 of the humidified air purifier is set to the same position as the height of the head where the respirator of the man is located.

Referring to FIG. 17A, air discharged through the discharge portion 109 of the humidified air purifier equipped with a virtual discharge guide wall V is discharged relatively inclined toward one side where the man is located. Accordingly, it can be seen that an airflow in which the discharged air directly contacts the head of a man is formed.

Referring to FIG. 17B, the air discharged through the discharge portion 109 of the humidified air purifier provided with the discharge guide wall 434 and the extension plate 436 does not directly contact the head and is relatively It can be seen that the discharge air flow concentrated upward is formed. 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 portion 109 by the extension plate 436 may form an airflow that is relatively concentrated upward. In summary, since the extension plate 426 extends horizontally in the lateral direction from the upper end of the discharge guide wall 434, the side of the flow component of the air passing through the blowing fan 480 to the discharge part 109 It is possible to weaken the directional flow component and strengthen the up-down flow component. In other words, since the inclination (or inclination) of the discharge guide wall 434 extending from the cut-off portion to be described later is dependent on the horizontal extension length of the extension plate 426, the discharge guide wall 434 As for the air flowing through the second discharge passage 430b due to the inclination, the size of the flow component in both directions may be reduced by the extension plate 426 and the size of the flow component upward may be increased.

Since the humidified air purifier 10 according to the present embodiment is a furniture-type humidified air purifier that is used as furniture such as a bookcase and a table, an arrangement example similar to that of furniture generally arranged in an indoor space can be assumed.

For example, in order to create a more comfortable sleeping environment when the user sleeps, the user may place a humidified air purifier near the bed. In this case, the position of the air discharge unit of the furniture-type humidifying air purifier formed to provide functions such as a bookcase and a table may be disposed relatively close to a respirator of an adult lying on a bed.

According to this, the air discharged from the humidified air purifier disposed near the bed can directly reach the user. Therefore, the user may feel uncomfortable and may be hygienic and dangerous.

On the other hand, the humidified air purifier according to the embodiment of the present invention can prevent the discharged air from directly contacting the user in the above-described use environment by guiding the discharge direction of the air according to the extension plate 436 to be concentrated upward. There is an advantage. As a result, user convenience is increased, and the degree of freedom of product placement increases, 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 an overall cylindrical shape. In detail, the impeller 485 includes a main plate 490 to which a plurality of blades 488 and a plurality of blades 488 are coupled, and a hub provided at the center of the main plate 490 and protruding forward ( 486) may be included.

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 disposed to be spaced apart in the circumferential direction of the main plate 490.

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

A fan motor 483 is disposed in front of the hub 486 of the impeller 485. In addition, the fan motor 483 may be mounted on the fan motor mounting portion 413 of the fan housing 410.

A motor cover 482 and a locking part 481 may be disposed behind the fan motor 483. The motor cover 482 may be fixed by attaching the fan motor 483 to the fan motor mounting portion 413 of the fan housing 410. The locking part 481 is coupled to the rotation shaft of the fan motor 483 and is disposed on the hub 482 so that the rotation power of the fan motor 483 is transmitted to the impeller 485.

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

The blade 488 according to an embodiment of the present invention may have an airfoil shape curved in approximately one direction. In more detail, at least a portion of the chord C 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 means a virtual straight line connecting the leading edge 603 and the trailing edge 604.

In addition, the pressure surface 603 of the blade 488 may be formed to be concave, and the negative pressure surface 604 may be formed to be convex. The impeller 485 may rotate in a direction in which the pressure surface 603 of the blade 488 receives air pressure. The air sucked into the impeller 485 through the fan suction unit 415 (see FIG. 6) hits 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 separated from the flow.

The blade 488 may be formed to have a predetermined leading edge radius R.

Hereinafter, in order to describe the shape of the blade 488 of the present invention in detail, virtual points, lines, etc., which are the basis of the construction, are first defined.

The mean camber line 656 may mean a virtual line connecting the centers of virtual circles inscribed with the pressure surface 601 and the negative pressure surface 602. The camber means a distance between the average camber line 656 and the demonstration C, and the maximum value of the camber may be referred to as a maximum camber M. In addition, 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, an imaginary circle 654 inscribed to the pressure surface 601 and the negative pressure surface 602 may be constructed centering on a point 655 corresponding to the maximum camber position ML. In this case, the contact point between the virtual circle 654 and the negative pressure surface 602 may be referred to as a 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 to determine the camber line according to the definition described above for the first linear surface 606 and the second linear surface 607. have. Accordingly, in the average camber line 656, a virtual line 657 connecting the point 655 corresponding to the maximum camber position ML and the leading edge 603 may be drawn. 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 is a radius (d) of the virtual circle 654 and It can be the same.

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

A reference point 605A may be positioned on the negative pressure surface 602. In more detail, 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 where 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 maximum at the reference point. In this case, the distance may be the minimum distance t from one point of the negative pressure surface 602 to the pressure surface 601 and may mean the thickness of the blade 488.

The distance (t) between the pressure surface 601 and the negative pressure surface 602 increases from the leading edge 603 to the reference point 605A, and may become closer from the reference point 605A to the trailing edge 604. have.

A first virtual straight line 651 in contact with the virtual line 657 at the leading edge 603 may be drawn. In more detail, among the tangent lines at one point on the virtual line 657, a tangent line when the one point is infinitely close to 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.

The 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 is the 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 length of the blade 488 as shown in FIG.

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 exemplary 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 to be flat, respectively, and may be formed at an angle to each other. The 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 increase as it approaches the reference point 605A from the leading edge 603, and between the second linear surface 607 and the pressure surface 601 The distance may become closer as the reference point 605A is closer to the maximum camber point 658.

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 an inflection point of the connection curved surface 605. However, the present invention is not limited thereto, and the negative pressure surface 602 may not include the connection curved surface 605, and the first linear surface 606 and the second linear surface 607 may be directly connected. 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 flow 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.

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

The blade 488 and the conventional blade 488 ′ according to the exemplary 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 as or similar to the pressure surface 601 ′ of the conventional blade 488 ′. In addition, the flow curve 608 of the blade 488 according to the 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, while the negative pressure surface 602 ′ of the conventional blade 488 ′ is formed as a streamlined curved surface, the negative pressure surface 602 of the blade 488 according to the exemplary embodiment of the present invention is a first linear surface 606 ) And the second linear surface 607 may have different shapes.

Noise was compared and tested by operating the impeller having a conventional blade 488 ′ shape and an impeller 485 having a blade 488 according to an embodiment of the present invention, respectively. The test object impeller contains 37 blades, and the diameter is set to 270mm and the height is 88mm. In addition, each blade was set at an entrance angle of 68.2 degrees and an exit 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 impeller a having the conventional blade 488 ′. In more detail, when the air volume was 3.2CMM, the noise was reduced by 1.3dB, and when the air volume was 5.3CMM, the noise was reduced by 1.1dB.

It can be seen that the impeller (b) having the blades 488 according to the embodiment of the present invention has a lower noise than the impeller (a) having the conventional blades 488 ′ at any air volume. That is, the blade 488 according to the embodiment of the present invention not only has the effect of reducing noise only under a specific air volume condition, but also has an effect of reducing noise for all air volumes.

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

The set distance (DL, see FIG. 19) of the blade, which was tested for noise 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 setting angle TH of the blade 488 according to the embodiment of the present invention is 7.5 degrees, 13 degrees, and 23 degrees, noise compared to the impeller having a conventional blade 488 ′. It can be seen that this has been reduced.

When the setting angle (TH) is less than 7.5 degrees or greater than 23 degrees, the noise reduction effect is insignificant compared to the impeller with the conventional blade (488`), and the noise reduction effect is maximum when the setting angle (TH) is 13 degrees. Was confirmed.

In more detail, 38.1dB of noise was measured when the set angle (TH) was 13 degrees based on the air volume of 5.3CMM, and 38.84dB of noise was measured when the set angle (TH) was 7.5 degrees, and the set angle (TH) was measured. When) is 23 degrees, a noise of 38.63dB was measured.

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

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

The set angle (TH, see FIG. 19) of the blade, which was tested for noise according to the 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 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 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 farther than 0.27 times the demonstration length (CL), the noise reduction effect is insignificant compared to the impeller with the conventional blade (488`), and the set distance (DL) is the demonstration length. When it was 0.21 times (CL), the noise reduction effect was confirmed to be the maximum.

In more detail, when the set distance (DL) is 0.21 times the demonstration length (CL) based on the air volume of 5.3CMM, 38.1dB of noise was measured, and when the set distance (DL) is 0.27 times the demonstration length (CL), A noise of 38.93dB was measured.

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

24 is a perspective view showing a rear configuration of a housing cover according to an 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 (refer to FIG. 25) is mounted. The sensor bracket 440 may be connected to an outer surface of the guide walls 432, 433, and 434. Specifically, the sensor bracket 440 may be installed in a space where the flow of air, that is, the suction or discharge of air in the housing cover 430 is difficult. Specifically, the sensor bracket 440 may be installed in a space where the flow of air, that is, the suction or discharge of air in the housing cover 430 is difficult. 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 on which a plurality of sensors 500, 550, and 560 are installed, and bracket support portions 443 and 445 that support the bracket body 441. .

The bracket body 441 may be formed to have an approximately hexahedral shape. In addition, the bracket body 441 may be positioned at the side of the guide walls 432, 433, and 434. Specifically, the bracket body 441 may be positioned at a side of the cut-off portion 435 between the discharge guide wall 434 and the flow guide wall 432.

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

The support rib 441b supports the plurality of sensors and may partition the installation positions of the plurality of sensors. In addition, a fastening member is coupled to the sensor fastening part 441c, and the plurality of sensors may be coupled to the sensor bracket 440 through the fastening member.

With this configuration, the plurality of sensors can be stably fixed within the sensor installation space 441a. In addition, sensors installed in the sensor installation space 441a may be shielded by a rear panel 107 coupled to a rear side of the housing cover 430.

The bracket support portions 443 and 445 may support the bracket body 441 on the housing cover 430. For example, in the bracket support portions 443 and 445, a first support portion 443 connecting an upper portion of the bracket body 441 to the outer surface of the guide wall 432, 433, 434, and the bracket body 441 A second support portion 445 connecting the lower portion of the guide wall to the outer surface of the guide walls 432, 433, and 434 is included. As an 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, which will be described later, may be installed on a rear surface of the sensor bracket 440, specifically, a rear surface of the first support part 443. To this end, a charging device fastening part 443a for fastening the sensor charging device with a fastening member is provided on the rear surface of the first support part 443.

25 is a view showing a sensor device mounted on a housing cover according to an embodiment of the present invention, FIG. 26 is a view showing the configuration of a dust sensor according to an embodiment of the present invention, and FIG. 27 is FIG. 28 is a front perspective view of a rear panel according to an embodiment of the present invention, and FIG. 28 is a rear perspective view of a rear panel according to an embodiment of the present invention. It is a drawing.

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

The plurality of sensors 500, 550, 560 may include a dust sensor 500 that detects an amount of dust contained in 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 on the rear side of the sensor bracket 440, and is supplied to the indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. The amount of dust contained can be detected. At this time, the rear panel 107 covers the dust sensor 500 so that it is not exposed to the outside.

In more detail, the dust sensor 500 includes a sensor body 510 provided with a component that substantially detects the amount of dust in the air.

In the sensor body 510, a sensor substrate 511 provided with a terminal portion 515, and a sensor case coupled to the sensor substrate 511 and in which a heater 517 and optical transmission/reception units 518, 519 are embedded ( 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 may 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 is formed in a substantially rectangular plate shape, and may be seated in the sensor installation space 431a.

Inside the sensor case 512, a flow path for air in which an amount of dust is 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 unit 513 may be disposed under the sensor case 512 and may be configured to pass through the rear surface of the sensor case 512.

In addition, a heater 517 may be disposed on one side of the sensor suction unit 513. The heater 517 performs a function of increasing the ambient air temperature of the sensor intake part 513. When the heater 517 is driven, the temperature of the air around the sensor intake unit 513 increases, so that the density decreases and the pressure decreases accordingly.

Further, a sensor discharge part 514 for discharging air may be formed on the upper side of the sensor flow path 512a. The sensor discharge part 514 may be configured to pass through 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 transmission/reception units 518 and 519 may be disposed on both sides of the sensor flow path 512a. The optical transmission/reception units 518 and 519 include an optical transmission unit 518 disposed on one side of the sensor flow path 512a and irradiating light. For example, the light transmitting unit 518 may include a light emitting diode (LED).

In addition, in the optical transmission/reception units 518 and 519, when the light that is disposed on the other side of the sensor passage 512a and irradiated from the optical transmission unit 518 acts on the air flowing through the sensor passage 512a, the A light receiving unit 519 for measuring the sensitivity of light scattered by dust contained in the air is included. For example, the light receiving unit 519 may include a photodiode detector. As the amount of dust contained in the air increases, the sensitivity of light received by the light receiving unit 519 decreases, and the output voltage value may increase. That is, the light sensitivity 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. A through hole 521 of the sensor coupling part 520 is disposed behind the cleaning hole 516, and the rear of the through hole 521 may be covered by a 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 portion 520 coupled to the sensor body 510. The sensor coupling part 520 may serve as a passage for guiding external indoor air to the sensor intake 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 communicate with the sensor suction part 513 and the cleaning hole 516.

The through hole 521 may be configured to pass through the front and rear surfaces of the sensor coupling part 520. Accordingly, indoor air introduced through the rear portion of the through hole 521 may pass through the through hole 521 and then be guided to the sensor suction unit 513. 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) to which the sensor cover 530 is hook-coupled to be mounted and detachable may be formed on the rear portion of the sensor coupling portion 520. The hook coupling portion includes a coupling groove. Accordingly, 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 unit 520. The sensor cover 530 includes a grill part 531 through which air is sucked into the dust sensor 500 and the air inside the dust sensor 500 is discharged to the outside.

The grill part 531 is configured to pass through the rear surface of the sensor cover 530. In addition, 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. In addition, the air discharged to the sensor discharge part 514 of the sensor case 512 may pass through the through hole 521 of the sensor coupling part 520 and be discharged to the outside through the grill part 531. have.

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

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 access the sensor body 510 through the through hole 521 and the cleaning hole 516 to perform cleaning of the dust sensor 500.

That is, the user can access the cleaning hole 516 by removing only the sensor cover 530 without having to separate the sensor coupling part 520 or the rear panel 107, and the There is an effect of being able to easily clean foreign matter such as dust accumulated in the sensor body 510.

In addition, the plurality of sensors 500, 550, 560 may further include a gas sensor 550 that detects the concentration of pollutants contained in 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 side of the sensor bracket 440, and is supplied to the indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. The concentration of contained pollutants can be detected. At this time, the rear panel 107 covers the gas sensor 550 so as not to expose it to the outside.

The gas sensor 550 may include a sensor unit 551 that detects 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 is formed in 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 for sensing 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 side of the sensor bracket 440 and controls the humidity of the indoor air through a rear panel 107 coupled to the rear side of the housing cover 430. Can be detected. At this time, the rear panel 107 covers the humidity sensor 560 not to be exposed to the outside.

The humidity sensor 560 includes a sensor unit 561 that detects 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 is formed in 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 difficult in the housing cover 430, that is, outside the housing cover 430. It is placed densely on the side. Accordingly, it is possible to secure an installation space in which the plurality of sensors are installed, and since the plurality of sensors are centrally disposed in one place, there is an effect of facilitating sensor management.

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, 434. That is, by the through hole 446, the plurality of sensors are separated from the second discharge passage 430b (refer to FIG. 14), so that the air flow in the second discharge passage 430b is prevented by the plurality of sensors. You can prevent it from affecting. Accordingly, 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 not exposed to the outside, the product appearance can be neat. In addition, when the rear panel 107 is separated, the plurality of sensors 500, 550, 560 may all be exposed to the outside, so when a failure of some of the plurality of sensors 500, 550, 560 occurs , Since only the rear panel 107 can be removed to replace or repair a malfunctioning sensor, there is an effect of simplifying the maintenance and management of the sensor.

Meanwhile, the humidifying air purifier 10 further includes a sensor charging device 800 installed on the housing cover 430. The sensor charging device 800 may be understood as a device that supplies 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 charging device 800 includes a charging device case 810 in which a plurality of components for charging, that is, a charging module, are embedded.

The charging device case 810 has an approximately hexahedral shape, and is installed on the rear surface of the sensor bracket 440. Specifically, the charging device case 810 is installed on the rear surface of the first support part 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, and 560 installed in the sensor bracket 440. In other words, a surface on which the charging device case 810 is installed may protrude further rearward than a surface on which the plurality of sensors 500, 550, and 560 are installed. In addition, the charging device case 810 may pass through the rear panel 107 and be exposed to the outside.

In addition, the charging device 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 (not shown) is electrically connected to the charging device case 810.

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

In addition, the charging device case 810 may further include a connection part 814 for fastening the charging device 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. In addition, the connection part 814 may be fastened to the charging device fastening part 443a (refer to FIG. 24) provided in the first support part 443 by a fastening member.

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

The charging device cover 820 functions to prevent the charging device case 810 from being exposed to the outside through the rear panel 107. To this end, the charging device cover 820 may be disposed in an area of the rear panel 107 where the charging device 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 surface of the rear panel 107 so as to be mounted and detachable.

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

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

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

Accordingly, a 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, a foreign material prevention part (not shown) may be provided in the plug through hole 821 to prevent foreign matter such as dust or moisture from penetrating. For example, the foreign matter preventing part may be formed of an elastic material such as rubber, and may be provided inside the plug through hole 821. In addition, the foreign matter preventing part may be configured to selectively open and close the plug through hole 821. With this configuration, the user can easily access the sensor charging device 800 through the charging device cover 820. Accordingly, charging of the plurality of sensors can be performed easily and conveniently.

Meanwhile, the rear panel 107 may cover the rear side of the housing cover 430. That is, the rear panel 107 can be viewed as a configuration positioned at the rearmost side of the humidified air purifier 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 rectangular plate shape. In addition, the plate part may be coupled to the rear side of the housing cover 430 to cover the plurality of sensors 500, 550, 560 and the sensor charging device 800.

An opening 107a through which the sensor charging device 800 passes may be formed in the plate portion. 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 through the opening 107a. In addition, the exposed sensor charging device 800 may be shielded by the charging device 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 fastening to the fastening part 438a of the housing cover 430 with a fastening member. 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 so as 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 the lower end. A service groove 107e may be further formed.

The insertion part 107c may be provided on 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 the lower end of the body part 110. Through this, the rear panel 107 may be coupled to the rear of the body portion 110.

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

In addition, the support rib 107d may function as a coupling bracket coupled to the housing cover 430. In this case, the coupling bracket may be provided above and below the plate part.

The service groove 107e may be formed to be recessed upward from the lower end of the rear panel 107 in order to facilitate the movement of the humidified air purifier 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 located on the side of the discharge part 109 and through which no air is discharged. have.

Specifically, an upper portion of the rear panel 107 may be bent in an a-shaped shape and extended forward to form an upper surface of the rear panel 107. Opening portions 109 and 109A penetrating vertically may be formed on an upper surface of the rear panel 107.

The opening portions 109 and 109A may include a discharge portion 109 and a non-discharge portion 109A. The discharge part 109 can face the second discharge passage 430b of the housing cover 430 (see FIG. 16) in the vertical direction, and the non-discharge part 109A faces the extension plate 436 in the vertical direction. I can. That is, of the opening portions 109 and 109A, the space between the guide wall 433 and the discharge side wall 434 extending in the vertical direction, that is, the portion facing the second discharge passage 430b is the discharge part 109, A 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 larger than the area of the non-discharge part 109A.

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

The discharge part 109 may guide air that has passed 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 portion 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 that guides a discharge direction of air passing through the discharge part 109.

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

A discharge grill 170 is provided in the opening portions 109 and 109A, and the discharge grill 170 may cover the open end 431a and the extension plate 436 of the housing cover 430.

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

A grill installation groove 107f in which the discharge grill 170 is installed may be formed in the rear panel 107. 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 from the upper end of the upper surface of the rear panel 107. The grill installation groove 107f may be located at the edges of the openings 109 and 109A.

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

30 is an enlarged view illustrating 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 175 that guides a flow direction of air passing through the discharge part 109.

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

A plurality of grill guides 175 may be disposed to be spaced apart at predetermined intervals in the inner direction of the outer frame. For example, a plurality of grill guides 175 may be spaced apart from each other in the front-rear direction.

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

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

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

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

The grill guide 175 includes an extension reference line DH, which is a virtual vertical line parallel to the vertical reference line D (refer to FIG. 14), and any one extension starting point located at a side end of the grill installation groove 107f ( Based on OH), it may be formed by extending upward so as to incline forward by a predetermined angle θA. Here, a horizontal line drawn along the side end of the grill installation groove 107f may be parallel to the ground.

That is, the grill guide 175 may extend so as to incline upward toward the top panel 105.

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

Accordingly, when the humidifying air purifier 10 is disposed so that the rear panel 107 is in close contact with the indoor wall, the discharged air passing through the discharge unit 109 can be discharged in the indoor direction opposite to the wall direction. There is an advantage.

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

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

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

Referring to FIG. 31A, the air discharged from the discharge portion 109 of the humidified air purifier 10 disposed so that the rear panel 107 faces the wall surface W directly and widely contact the wall surface W. It can be seen that airflow is formed.

Referring to FIG. 31B, the air discharged from the discharge unit 109 by the grill guide 175 inclined toward the front is discharged to the indoor space opposite the wall surface W, so that it is directly applied to the wall surface W. It can be seen that the air flow in contact is minimized.

That is, it is possible to guide the flow of air discharged from the humidified air purifier 10 away from the indoor wall by the discharge grill 170 extending inclined toward the front.

Accordingly, there is an advantage of preventing discoloration, damage, mold, etc. that may occur when the discharged air containing moisture touches the wallpaper. That is, since it is possible to prevent wallpaper contamination, there is an advantage of maintaining a clean environment of an indoor space.

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

Referring to Figure 32, the air flow in the humidified air purifier 10 according to an embodiment of the present invention will be described.

First, when the blowing fan 480 is driven, air outside the humidified air purifier 10 may be sucked into the suction unit 225 via the depression 30. The air sucked from the suction part 225 may flow upward and be introduced into the receiving part 220.

Then, the air passes through the air filter assembly 280. Since the air filter assembly 280 is disposed to be inclined forward while seated on the air filter mounting portion 226, 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.

In this way, since the air filter assembly 280, the water tank 260, and the humidification filter assembly 300 are sequentially disposed from the front part of the receiving part 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 and may be discharged in the radial direction. The air passing through the blowing fan 480 flows upward, and may be discharged to the outside through the discharge part 109. That is, since air is sucked into the lower front portion of the humidified air purifier 10 and discharged to the upper rear portion, the flow resistance may be reduced and the blowing performance may be improved.

Looking at an internal flow path of air passing through the housing assembly 400, an internal flow path that is introduced in the axial direction of the blowing fan 480 and discharged upward toward the discharge unit 109 may be formed.

When the internal flow path is described in detail, the air introduced in the direction of the rotation axis 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 diagram showing a partial configuration of a humidified air purifier according to an embodiment of the present invention, and FIG. 34 is a schematic diagram showing air flow in a humidified air purifier 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 humidification filter 330, and the blowing fan 480 are spaced apart in a row and disposed. To do.

Specifically, the air filter 285 is disposed at a front portion of the humidified air purifier 10, and the blowing fan 480 is disposed at a rear portion of the humidified air purifier 10. In addition, 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 air humidification. That is, since the humidification filter 330 is located on the downstream side of the air filter 285 and is located on the upstream side of the blowing fan 480, the air that has passed through the air filter 285 remains moistened. , It can be quickly discharged to the outside by the blowing fan 480.

If, unlike the present invention, if the humidification filter 330 is located on the downstream side of the blowing fan 480, the air continuously passing through the air filter 285 and the blowing fan 480 is the humidification filter After passing through 330, the flow rate may be relatively slow. If the flow rate is slowed, it takes a long time for the air containing moisture 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, the interval L1 between the air filter 285 and the humidification filter 330 may be larger than the interval L2 between the humidification filter 330 and the blowing fan 480.

The distance L1 between the air filter 285 and the humidification filter 330 may mean a front-rear distance between an arbitrary point of each of the air filter 285 and the humidification filter 330. In addition, the distance L2 between the humidifying filter 330 and the blowing fan 480 may mean a front-rear distance between arbitrary points of the humidifying filter 330 and the blowing fan 480.

That is, by placing the humidification filter 330 closer to the blowing fan 480 than the air filter 285, it helps to quickly discharge the air containing moisture to the outside by the blowing fan 480. I can.

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 and may be disposed.

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

That is, the air sucked into the humidifying air purifier 10 may move straight forward and quickly pass through the air filter 285, the humidification filter 330 and the blowing fan 480. Accordingly, the air sucked into the humidifying air purifier 10 flows backward and passes through the air filter 285, the humidification filter 330, and the blowing fan 480 in sequence, so that the air is filtered and humidified. The effect can be improved.

Meanwhile, the height H1 from the lower surface of the door 224 to the upper end of the air filter 285 is higher than the height H2 from the lower surface of the door 224 to the upper end of the humidification filter 330. I can. That is, by increasing the overall height of the air filter 285, it is possible to improve air filtering performance.

On the other hand, since the humidification filter 330 exhibits sufficient humidification performance even though 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. I can.

And by forming the height (H3) from the lower surface of the door 224 to the upper end of the blowing fan 480 lower than the height (H2) of the humidification filter 330, the air passing through the humidification filter 330 To the outside as quickly as possible.

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

In addition, the height T3 from the lower surface of the door 224 to the lower end of the blowing fan 480 may be formed higher than the height T1 of the lower end of the air filter 285. With this configuration, the air that has passed through the air filter 285 can move straight ahead without changing the direction and quickly flow into the suction side of the blowing fan 480.

On the other hand, from the viewpoint of an 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. Is formed, a second intermediate flow path S3 is formed between the humidification filter 330 and the blowing fan 480, and a discharge flow path 480 in the housing cover 480 corresponding to the discharge side of the blowing fan 480 S4) can be formed.

The first suction passage S1 is understood as a suction passage of the air filter 285 and may extend in a vertical direction. Widths in the front and rear directions of the suction passage S1 may be formed differently based on the vertical direction. For example, the lower width of the suction passage S1 may be larger than the upper width of the suction passage S1. The difference in the width of the flow path may be due to a configuration in which the upper portion of the air filter 285 is disposed inclined forward.

The first intermediate flow path S2 may be formed on the upper side of the bucket 270. The first intermediate flow path S2 is understood as a suction flow path of the humidification filter 330 and may extend in the front-rear direction. The length of the first intermediate flow path S2 in the front-rear direction may be larger than the length of the suction flow path S1 in the front-rear direction.

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

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

In this way, since the air filter assembly 280, the water tank 260, and the humidification filter assembly 300 are sequentially disposed from the front part of the receiving part 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 showing a cut-off of the housing cover shown in FIG. 35, and FIG. 37A is a comparative example of a conventional housing cover. Fig. 37B is a perspective view showing a housing cover according to another embodiment of the present invention, Fig. 38A is a view showing an outline of a cutoff of a conventional housing cover as a comparative example, and Fig. 38B is An outline of a cut-off of a housing cover according to another embodiment is illustrated.

In detail, FIG. 35 is a view in which the sensor bracket 440 is omitted for convenience.

Other embodiments described below are the same as those of the above-described embodiment except for the configuration of the housing cover, and thus, overlapping contents 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 cut-off portion 435 to the outer circumference of the blower fan 480, and more specifically, the impeller 485 is gradually increased along the flow direction of air.

The flow guide wall 432 may be formed between the reference angle point (k=0° or 360°) and the cut-off part 435 around 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 cut-off part 435 may be located about 90° in the rotation direction (eg, clockwise) of the impeller 485. The rotation center axis of the impeller 485 may overlap with the cut-off portion 435 in a direction of k=90°.

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

The curvature of the flow guide wall 432 may become smaller and the radius of curvature may increase as it approaches the reference angle point (k=0° or 360°) from the cut-off part 435 along the rotation direction of the impeller 485.

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 from the impeller 485 in the radial direction flows is formed, and the impeller 485 rotates. The flow cross-sectional area of the first discharge passage 430a may be configured to gradually increase 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 increase along the rotation direction of the impeller 485.

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

The discharge guide wall 434 may extend from the cut-off part 435 provided on 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, substantially 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 be in communication with the first discharge passage 430a.

The discharge guide wall 434 and the extension guide wall 433 may be configured to be separated from each other along the flow direction of air. Accordingly, the flow cross-sectional area of the second discharge passage 430b may gradually increase along the flow direction of the air.

The cut-off portion 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 passage 430b.

The cut-off 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 a 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 blowing fan 480 It may cause the performance degradation of Conversely, when the gap is too small, the flow pressure is concentrated at the end of the cut-off part 435 and noise may increase. Therefore, it is preferable that the gap is appropriately adjusted.

As an example, the minimum distance (g) between the cut-off part 435, the outer circumference of the first connection part 702 and the impeller 485, which will be described later in more detail, is 8% of the diameter G of the impeller 485 It is preferable that it is more than 10%. The minimum distance (g) between the first connection portion 702 and the outer circumference of the impeller 485 may be referred to as a cutoff gap.

Meanwhile, referring to FIGS. 37A and 38A, the cut-off portion 435 ′ of the conventional housing cover is formed to be round in the longitudinal direction (hereinafter, referred to as the first direction), and round in the width direction (hereinafter, referred to as the second direction). It can be formed flat without losing. That is, the conventional cut-off portion 435 ′ has a predetermined curvature in the first direction, but the curvature in the second direction is zero. The first direction may mean a direction in which the flow guide wall 432 and the discharge guide wall 434 are connected. The second direction may mean a direction connecting the front end and the rear end of the cut-off part 435.

On the other hand, referring to FIGS. 37B and 38B, the cut-off portion 435 of the housing cover 430 according to an embodiment of the present invention is formed to be rounded in the first direction, as well as at least a part of the second direction. Can be formed to be 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 hits the end of the cut-off portion 435.

Hereinafter, the configuration of the cut-off unit 435 will be described in more detail.

The cut-off part 435 includes a first connection part 702 connecting the outline 701 with the flow guide wall 432 and a second connection part 703 connecting the outline 701 with the discharge guide wall 434 It may include.

The outline 701 may refer to an end of the cut-off part 435, and more specifically, may refer to a contour line of a portion of the cut-off part 435 that most protrudes in the direction of the discharge passage 433b.

At least a part of the outline 701 of the cut-off part 435 may be formed to be rounded at least in part in the second direction.

Referring to FIG. 38A, an outline 701' of the cutoff of the conventional housing cover has a linear shape with respect to the second direction. On the other hand, referring to FIG. 38B, the outline 701 of the cut-off portion 435 of the housing cover 430 according to an embodiment of the present invention may be formed to have a predetermined curvature in at least a part of the second direction. .

The flow velocity of air colliding with the outline 701 of the cut-off part 435 may vary depending on the position in the second direction. For 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 cut-off portion 435 of the housing cover 430 according to the present exemplary embodiment may be formed to correspond to the flow velocity distribution for each position.

In more detail, the outline 701 of the cut-off part 435 includes a linear part 704 obliquely connected to the cover plate 431 and a round part extending from the linear part 704 and connected to the fan housing 410. It may include 705.

The linear part 704 may be elongated in a direction oblique to the second direction. The 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 portion 705 may be formed to be rounded to have a predetermined curvature in the second direction. The round portion 705 may be formed to be convex toward the fan housing 410.

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

The length Y3 of the linear part 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 portion 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, the 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 in 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, in the second direction, the distance Y3 between the cover plate 431 and the inflection point 506 may be the same as the distance Y2 between the fan housing 510 and the inflection point 506.

Meanwhile, the cut-off portion 435 may be formed to be round 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 cut-off 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 connector 702 in the first direction and the curvature of the second connector 703 in the first direction may increase as they get closer to the outline 701, respectively. It 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 in the first direction in the linear portion 704 and the curvature in the first direction in the round portion 705 may be the same.

Meanwhile, the first connector 702 and the second connector 703 may each include a three-dimensional curved surface. Here, the three-dimensional curved surface may mean a curved surface having a predetermined curvature in the first direction and the second direction, and may be referred to as a free curved surface.

39 is a graph showing a change in noise according to an air volume of a conventional blowing fan installed on a housing cover and a blowing fan installed on 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) generates a higher noise than the blowing fan (b) according to the present embodiment for all air volumes.

In particular, the conventional blowing fan (a) has a noise of 34.3 dB when the air volume is 3.7CMM, and the blowing fan (b) according to the present embodiment has a noise of 32.0dB when the air volume is 3.7CMM, so the maximum is 2.3. The noise reduction effect of dB was confirmed.

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

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

In more detail, in the conventional blowing fan, a first noise peak (P1) of 20 dB having a first frequency between 500 Hz and 1000 Hz was measured, and a second noise peak of 0 dB having a second frequency between 1500 Hz and 2000 Hz. (P2) was measured.

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

41A is a view showing an outline of a cut-off of a conventional housing cover as a comparative example, and FIGS. 41B to 41D are an outline of a cut-off of a housing cover according to another embodiment of the present invention according to the position of an inflection point. FIG. 42 is a graph showing a change in noise according to an air volume of a 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 a point 20% of the height. That is, the height (0.2*Y1) of the linear part 704 may be 0.2 times the height (Y1) of the outline 701, and the height (0.8*Y1) of the round part 705 is It may be 0.8 times the height (Y1).

In the outline 701 of the cutoff 435 shown in FIG. 41C, the inflection point 706 may be located at 50% of the height. That is, the height (0.5*Y1) of the linear portion 704 and the height (0.5*Y1) of the round portion 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 It may be 0.2 times the height (Y1).

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

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

Based on the case where the air volume is 5.3CMM, a noise of 41.7dB was measured in the conventional blowing fan (a) installed in the housing cover, and a noise of 40.9dB 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, compared to the conventional blowing fan (a) installed on the housing cover, the first blowing fan (b) is reduced by 0.8 dB, the second blowing fan (c) is reduced by 1.3 dB, and the third blowing fan In (d), it can be seen that 0.3dB is reduced.

In conclusion, the blowing fan (b) (c) (d) installed on the housing cover 430 according to the present embodiment has a noise reduction effect compared to the conventional blowing fan (a), and in particular, the height of the outline 701 When 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 of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention.

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

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

10: humidified air purifier 30: depression
100: cabinet 101: base
103: side panel 105: top panel
107: rear panel 107: grill installation groove
109: discharge portion 109A: non-discharge portion
170: discharge grill 175: grill guide part
200: door assembly 225: suction unit
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: blower fan

Claims (20)

A cabinet provided with a blowing fan;
A door assembly coupled to the cabinet so as to be drawn out in a direction away from the blowing fan;
A suction unit formed on a lower surface of the door assembly and through which air is introduced;
An air filter and a humidifying filter installed on the door assembly and positioned at a rear side of the suction unit;
A discharge part formed on an upper surface of the cabinet and through which air passing through the air filter and the humidification filter is discharged;
A housing cover positioned between both side surfaces of the cabinet under the discharge part;
A discharge grill located above the discharge part; And
A grill guide provided on the discharge grill and extending obliquely in the withdrawal direction of the door assembly toward an upper portion thereof,
The housing cover,
A flow guide wall surrounding the blowing fan to guide the air from the blowing fan to the discharge unit;
A discharge guide wall obliquely extending from the flow guide wall toward the discharge part to form a cut-off part that divides the air into a rotational flow discharged from the blowing fan and an upward flow directed to the discharge part; And
It includes an extension plate extending from one side of the discharge guide wall to one side of the cabinet,
The extension plate,
A step rib extending to a set length limiting the inclination of the discharge guide wall to reduce the lateral flow of the air flowing to the discharge part along the discharge guide wall, and extending upward to support the discharge grill. Includes,
The air passing through the discharge unit is a humidified air purifier in which a flow direction is guided along an extension direction of the grill guide.
delete The method of claim 1,
The extension plate is a humidification air purifier extending horizontally to one side of the cabinet. delete The method of claim 1,
A humidification air purifier having a horizontal distance from the discharge guide wall to one side of the cabinet is shorter than the horizontal distance to the other side of the cabinet.
The method of claim 1,
An angle between the discharge guide wall and the extension plate is an obtuse angle.
delete The method of claim 1,
The housing cover,
It is located at the rear of the blower fan, further comprising a cover plate defining a discharge passage through which air flows to the discharge guide wall and the discharge part,
The extension plate is a humidification air purifier extending perpendicular to the cover plate.
delete The method of claim 1,
The discharge guide wall is a humidification air purifier extending downwardly to the extension plate so as to overlap the flow guide wall.
The method of claim 1,
The housing cover,
Further comprising an extension guide wall extending from the flow guide wall on the opposite side of the discharge guide wall,
The horizontal distance between the upper end of the discharge guide wall and one side of the cabinet,
A humidification air purifier farther than a horizontal distance between the upper end of the extension guide wall and the other side of the cabinet.
delete The method of claim 1,
The housing cover,
Further comprising a sensor bracket on which a plurality of sensor devices are mounted,
The sensor bracket is a humidification air purifier positioned in a recessed space formed by the discharge guide wall and the extension plate.
A cabinet provided with a blowing fan;
A door assembly coupled to the cabinet so as to be drawn out in a direction away from the blowing fan;
A suction unit formed on a lower surface of the door assembly and through which air is introduced;
An air filter and a humidifying filter installed on the door assembly and disposed at a rear side of the suction unit;
A discharge part formed on the upper surface of the cabinet and discharging the air that has passed through the humidification filter to the outside; And
It includes a discharge grill installed on the upper portion of the discharge portion,
The discharge grill includes a grill guide extending obliquely in the withdrawal direction of the door assembly as it faces upward,
The air passing through the discharge unit is a humidified air purifier in which a flow direction is guided along an extension direction of the grill guide.
delete The method of claim 14,
The grill guide is provided in plurality,
The plurality of grill guides are humidified air purifiers disposed to be spaced apart from each other in a drawing direction of the door assembly. The method of claim 14,
An upper panel forming an upper surface of the cabinet; And
Further comprising a rear panel forming the rear of the cabinet,
At least one of the top panel and the rear panel is a humidified air purifier formed of wood. The method of claim 17,
The discharge grill is a humidified air purifier located at the rear of the top panel. The method of claim 17,
The rear panel includes a grill installation groove formed on an upper surface portion contacting the rear end of the upper surface panel,
The discharge grill is a humidified air purifier seated in the grill installation groove.
The method of claim 19,
The grill installation groove, a humidification air purifier forming an edge of the discharge portion.

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