JP7446066B2 - Air cleaner - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies Website publication date: August 17, 2018 Website address: https://news. naver. com/main/read. nhn? mode=LPOD&mid=sec&sid1=&oid=016&aid=0001430624 Publisher: LG Electronics Incorporated Website publication date: November 1, 2018 Website address: https://news. naver. com/main/read. nhn? mode=LPOD&mid=sec&sid1=&oid=003&aid=0008888042 Publisher: LG Electronics Incorporated

The present invention relates to a humidifying air cleaner that can purify and humidify air.

An air purifier is understood as a device that sucks in polluted air, purifies it, and exhausts the purified air. For example, an air cleaner may include a blower for causing outside air to flow into an inner portion of the air cleaner, and a filter for filtering dust, bacteria, etc. in the air.

A humidifier is understood as a device for sucking in air, humidifying it, and discharging humidified air to supply moisture to the air. Conventional humidifiers are classified into vibrating types, which atomize water using a diaphragm and then discharge it into the air, and natural evaporation types, which naturally evaporate water through humidifying filters. Natural evaporation type humidifiers include disc type humidifiers that use driving force to rotate the disc and naturally evaporate water from the surface of the disc in the air, and natural evaporation type humidifiers that use driving force to rotate the disc and naturally evaporate water from the surface of the disc in the air. An evaporative humidifying filter type humidifier is included.

In recent years, humidifying air cleaners that add a humidifying function to air cleaners have been developed. In the humidifying air purifying device disclosed in Japanese Unexamined Patent Application Publication No. 2011-226670 (published on November 11, 2011), an air inlet for sucking air is arranged between the main body and the front panel, and the humidified air is discharged. The port is located on the top of the main body.

However, the humidifying air purifying device disclosed in JP-A-2011-226670 has the following problems.

Since the air intake ports are formed on the top, bottom, left, and right edges of the front panel, air sucked in different directions may interfere with each other, and the air sucked into the main body may not flow smoothly.

Furthermore, the air inlet may spoil the appearance of the humidifying air purification device.

Furthermore, since there is no structure to guide the air blown upward by the blower, only a part of the air blown by the blower is discharged to the upper exhaust port, and the other part remains inside the main body, reducing efficiency. It may decrease.

Furthermore, since the exhaust port is open during operation of the humidifying air purification device, there is a possibility that large foreign objects may enter the exhaust port. Furthermore, if the user's body enters there is a risk of injury from the rotating air blowing means.

In addition, the discharge port is equipped with a vane to adjust the discharge angle of the humidified air, but if the vane is bent backwards, the wall behind the humidified air purifier will be affected by the humidified air that is discharged. Due to humidification, there is a risk of mold and other growth.

Furthermore, when the humidified air purification device is installed next to the bed, humidified air from the exhaust port may be discharged directly toward the user's face or head, causing discomfort to the user.

Japanese Patent Application Publication No. 2011-226670

[Problem to be solved by the invention]
[Means to solve the problem]
It is an object of the present invention to provide a humidifying air cleaner in which the purified or humidified exhaust air stream is suitable for indoor use environments.

Another object of the present invention is to provide a humidifying air cleaner that can reduce noise caused by driving a blower fan.

Another object of the present invention is to provide a humidifying air cleaner that can effectively reduce noise generated by air flow.

Another object of the present invention is to provide a humidifying air cleaner that can create a comfortable sleeping environment for the user.

Another object of the present invention is to provide a humidifying air cleaner with a housing structure that can perform the functions of multiple sensors in an aerodynamically effective manner.

To achieve the above object, the humidifying air cleaner of the present embodiment includes a discharge grill that has a plurality of grill guides formed diagonally forward and upward, and covers the discharge portion from above.

Therefore, since the air discharged from the discharge portion is guided forward and upward by the plurality of grill guides, it is possible to prevent the wall located behind the humidifying air cleaner from getting wet. Furthermore, foreign matter larger than a predetermined size can be prevented from entering the discharge portion.

Additionally, a recessed portion may be located between the base and the lower end portion of the door assembly, and the air intake port may be formed on the bottom surface of the door assembly, located above the recessed portion.

Therefore, the air inlet is not visible to the user, and the appearance of the humidifying air cleaner can be aesthetically improved. Furthermore, indoor air can be smoothly sucked into the cabinet through the recessed portion and the intake port.

Specifically, the humidifying air cleaner according to the present embodiment includes a cabinet including a base, a pair of side panels provided on both sides of the base, and an upper panel and a rear panel that respectively connect the pair of side panels. But that's fine.

Further, the humidifying air cleaner may further include a door assembly coupled to the cabinet such that it can be pulled out from the front of the cabinet and spaced upwardly relative to the base.

Furthermore, the humidifying air cleaner may further include a recessed portion defined as a space recessed toward the rear, and disposed between the lower end of the door assembly and the base.

Further, the humidifying air cleaner may further include an intake port formed on a lower surface of the door assembly through which air flows. The air intake may communicate with an interior portion of the cabinet.

Furthermore, the door assembly may be provided with an air filter and a humidification filter.

The distance L1 between the air filter and the humidifying filter may be larger than the distance L2 between the humidifying filter and the blower fan.

Further, the height H1 of the door assembly from the bottom of the door to the top of the air filter may be greater than the height H2 from the bottom of the door to the top of the humidifying filter.

Furthermore, the height of the humidifying filter may be lower than the air filter.

The height T1 from the bottom surface of the door to the bottom end of the air filter may be higher than the height T2 from the bottom surface of the door to the bottom end of the humidifying filter.

Furthermore, the humidifying air cleaner may further include a discharge portion disposed on the rear side of the upper panel, from which air that has passed through the humidification filter is discharged.

Furthermore, the humidifying air cleaner may further include a discharge grill that has a plurality of grill guides that extend forwardly toward the upper end and covers the upper side of the discharge portion.

The plurality of grill guides can be spaced apart from each other in the front-back direction and can maintain a constant angle with respect to the imaginary vertical line.

Therefore, air can always be discharged forward and upward, and the wall located behind the humidifying air cleaner can be prevented from getting wet.

Additionally, the upper portion of the rear panel may be bent to form a forwardly extending upper surface. The evacuation portion may form a vertical opening in the top surface of the rear panel.

Therefore, the evacuation part can be placed behind the top panel and the top surface of the rear panel can be easily connected to the top panel.

Further, a grill installation groove in which the exhaust grill is seated may be formed on the upper surface of the rear panel. The exhaust grill can be stably attached to the grill installation groove.

Meanwhile, the humidifying air cleaner may further include a housing cover provided inside the cabinet and having an outer surface surrounding the blower fan.

The outer surface of the housing cover includes a guide plate extending radially upward to guide air passing through the blower fan, and an extension plate extending laterally from the end portion of the guide plate along the upper edge of the housing cover. It may also include.

The extension plate may be formed with stepped ribs for supporting the exhaust grille.

Furthermore, the discharge portion may communicate with a discharge channel formed by the guide plate.

Further, the blower fan may include an impeller for drawing in and discharging air.

The impeller blades have a maximum camber point, which is defined as the point on the suction surface that corresponds to the point with maximum camber on the average camber line, and another point on the suction surface where the distance between the suction surface and the pressure surface is maximum. and a reference point defined as a point.

The suction surface may include a linear surface formed as a flat surface from the point of maximum camber to the leading edge.

The linear surface may include a first linear surface located between the reference point and the leading edge and a second linear surface located between the reference point and the maximum camber point.

The angle between the first linear surface and the second linear surface may be an obtuse angle.

The distance DL between the leading edge and the reference point may be 0.21 to 0.27 times the chord length CL.

According to the blade structure of the impeller described above, it is possible to reduce flow noise when the blower fan is driven.

Furthermore, the housing cover may further include a sensor bracket to which a plurality of sensor devices are attached. The sensor bracket may be placed in a recessed space formed by the outer surface of the housing cover.

Therefore, the influence of airflow on multiple sensors can be minimized.

The plurality of sensor devices may include at least one of a dust sensor, a gas sensor, and a humidity sensor.

Further, the housing cover may include a guide plate extending obliquely upward from the cut-off portion, and an extension plate extending from the guide plate along the upper end of the housing cover.

Here, the guide plate and the extension plate may form a concave space in which the sensor bracket is attached.

Furthermore, the inner surface of the cut-off portion may be formed as a curved surface with repeated concave surfaces and protruding surfaces.

Meanwhile, in the humidifying air cleaner according to the present embodiment, an opening portion including a discharge portion may be formed in the upper portion of the cabinet.

A scroll housing with a blower fan may be attached to the cabinet.

A scroll housing may be disposed below the opening.

Therefore, by minimizing flow loss due to the scroll housing, humidified air blown by the ventilation fan can be guided to the opening portion. In other words, the efficiency of the blower fan can be improved.

Additionally, the second guide may be vertically elongated and the third guide may be sloped upwardly away from the third guide.

The shortest distance between the top of the third guide and a side panel on one side of the cabinet is the minimum distance between the top of the second guide and a side panel on the other side of the cabinet. It may be longer than the shortest distance.

Therefore, the inclination of the third guide can be made closer to vertical than horizontal, and it is possible to prevent the airflow guided by the third guide from being discharged substantially horizontally in the left-right direction.

Specifically, the humidifying air cleaner according to the present embodiment may include a cabinet having a pair of side panels provided on both sides, and an upper panel and a rear panel that respectively connect the pair of side panels.

Further, the humidifying air cleaner according to the present embodiment may further include an opening formed in the upper portion of the cabinet.

Furthermore, the humidifying air cleaner according to the present embodiment may further include a scroll housing that is disposed below the opening of the cabinet and includes a blower fan.

The scroll housing may include a first guide formed in a rounded shape so as to surround a part of the outer periphery of the blower fan.

Additionally, the scroll housing may further include a second guide disposed near one of the pair of side panels and extending upwardly at one end portion of the first guide.

Further, the scroll housing may further include a third guide disposed near the other of the pair of side panels and extending upwardly from the other end portion of the first guide.

The third guide may extend diagonally away from the second guide from the cut-off portion formed in the portion connected to the first guide toward the upper portion.

The distance between the top end of the third guide and the other side panel may be longer than the distance between the top end of the second guide and the one side panel.

Furthermore, the upper end of the third guide may be arranged to overlap with the first guide when viewed downward.

Therefore, the third guide can be tilted closer to vertical than horizontal. According to this, it is possible to prevent the side components of the airflow guided by the third guide from being discharged substantially horizontally when passing through the discharge portion.

Additionally, the upper portion of the rear panel may be bent and extend forward to form a top surface. Here, the opening portion may be defined as an opening that opens in the upper surface of the rear panel in a vertical direction.

Further, the scroll housing may further include an extension plate extending horizontally from the upper end of the third guide toward the other side panel.

Additionally, the opening portion may include a discharge portion that communicates downwardly with the space between the second guide and the third guide, and a non-discharge portion that faces downwardly toward the extension plate.

Here, the area of the discharge portion may be larger than the area of the non-discharge portion.

Further, a plurality of grill guides may be attached to the opening portion so as to extend forwardly toward the upper portion.

Furthermore, the opening portion may be provided with a discharge grill that covers the upper side of the opening portion.

Furthermore, the plurality of grill guides may be arranged apart from each other in the front-rear direction. The extending direction of the grill guide can maintain a constant angle with respect to the imaginary vertical line.

Furthermore, a portion of the exhaust grille may cover the exhaust portion and another portion of the exhaust grille may cover the non-exhaust portion.

Additionally, stepped ribs may be formed on the extension plate to support the exhaust grille.

Meanwhile, the humidifying air cleaner according to the present embodiment may include a scroll housing that extends from the upper end of the third guide in a direction away from the second guide and includes an extension plate located below the opening. .

The third guide may be inclined to be near vertical. Therefore, the airflow guided by the third guide can reduce the flow component discharged in the lateral direction.

In detail, the humidifying air cleaner according to the present embodiment may include a cabinet having an opening formed in its upper portion, and a scroll housing disposed under the opening of the cabinet and having a blower fan therein. . The scroll housing includes a first guide that is rounded so as to surround a part of the outer periphery (or circumference) of the blower fan, and a first guide that extends from one end of the first guide toward the opening. a second guide extending toward the opening from a cutoff portion formed in the other end portion of the first guide; and a third guide extending from the second guide as it approaches the opening. The third guide may include a third guide that slopes away from the third guide, and an extension plate that extends horizontally from an upper end portion of the third guide in a direction away from the second guide and is located below the opening portion.

Furthermore, the humidifying air cleaner may further include a discharge grill that is provided with a plurality of obliquely formed grill guides such that the upper end thereof is inclined forward, and that covers the opening portion from above.

A connecting portion (edge) between the third guide and the extension plate may be arranged to overlap downward with the first guide.

In another aspect, the humidifying air cleaner according to the embodiment of the present invention can propose a structure for reducing internal noise.

The humidifying air cleaner includes a door assembly coupled to the cabinet so as to be pulled out from the cabinet, a fan housing provided in the cabinet and coupled to the fan motor, and a fan housing coupled to the rear side of the fan housing and coupled to the fan motor. and a housing cover that accommodates the blower fan.

The housing cover includes a cover plate provided on one rear surface, a guide plate extending forward along a side edge of the cover plate, and defining a discharge passage through which air that has passed through the blower fan flows. May include.

The guide plate may include a first guide extending away from the blower fan and along the rotational direction of the blower fan.

The guide plate further includes a second guide extending upwardly from the first guide, and a third guide disposed opposite the second guide and extending upwardly from the first guide. It may further include a guide.

Further, the guide plate may include a cutoff portion located between the first guide and the third guide, and the cutoff portion may be formed to protrude toward the discharge flow path.

Furthermore, the minimum distance g between the cutoff portion provided on the blower fan and the impeller may be 8% or more and 10% or less of the diameter G of the impeller.

The cutoff portion may be formed to be rounded with respect to a first direction defined as a direction connecting the first guide and the third guide, and the cutoff portion may have a front end and a rear end. It may be formed to be at least partially rounded with respect to a second direction defined as a direction connecting the parts.

Furthermore, the discharge channel includes a first discharge channel formed along the first guide and a second discharge channel formed between the second guide and the third guide. May include.

According to the above configuration, it is possible to reduce the noise generated when a portion of the air flowing from the first exhaust flow path to the second exhaust flow path collides with the end portion of the cutoff portion.

The humidifying air cleaner according to the embodiment of the present invention has the following effects.

First, the humidified air discharged from the discharge portion can be discharged to the front upper side by the discharge grill. As a result, the wall located behind the humidifying air cleaner can be prevented from getting wet, and mold can be prevented from growing on the wall due to moisture.

In addition, the multiple grill guides of the exhaust grill are spaced apart from each other in the front and back direction and are maintained at a constant angle with respect to the imaginary vertical line, so the humidified air exhausted from the exhaust port is always exhausted to the front upper side. maintained so that Furthermore, it is possible to prevent foreign objects larger than a predetermined size or the user's body from entering the discharge portion.

Furthermore, since the extension plate extends in the horizontal direction at the upper end portion of the third guide, it is possible to form the third guide with a steeper inclination than in the case where no extension plate is formed. Thereby, the air guided to the third guide formed diagonally in the left-right direction and forming the scroll flow path can be discharged substantially perpendicularly to the left-right direction. Therefore, when using the humidifying air cleaner by placing it next to the bed, there is an advantage that the humidified air discharged from the discharge portion is not directed directly toward the user's head or face, and the user does not feel uncomfortable.

Further, the horizontal distance between the top portion of the third guide and the adjacent side panel may be longer than the horizontal distance between the top portion of the second guide and the side panel adjacent thereto. As a result, a space for arranging the extension plate can be secured between the pair of side panels.

Furthermore, the upper end portion of the third guide may overlap the first guide in the vertical direction. As a result, compared to the case where the upper end portion of the third guide is formed outside the first guide, the extension plate extending from the upper end portion of the third guide can be formed sufficiently long.

Furthermore, the opening part may include not only a discharge part directed vertically towards the inner part of the scroll housing, but also a non-discharge part led vertically towards the extension plate. Thereby, the opening portion is not formed biased to one side in the left-right direction, so that the appearance of the humidifying air cleaner can be aesthetically improved.

Additionally, the humidified air can be spread out and flowed through the exhaust port of the scroll housing to the exhaust section. Therefore, a portion of the humidified air can be smoothly discharged from the opening without clogging, compared to a case where the opening consists only of a discharge section directed vertically toward the inner part of the scroll housing. There are advantages.

The area of the discharge portion may be larger than the area of the non-discharge portion. As a result, humidified air can be smoothly discharged.

Further, a portion of the exhaust grille may cover the exhaust portion, and another portion of the exhaust grille may cover the non-exhaust portion. As a result, since the exhaust grill covers the non-exhaust portion, the appearance of the humidifying air cleaner can be aesthetically improved.

Further, since the extension plate is provided with stepped ribs for supporting the exhaust grille, the exhaust grille can be supported more stably.

1 is a perspective view showing the configuration of a humidifying air cleaner according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a humidifying air cleaner according to an embodiment of the present invention with the door open. 1 is an exploded perspective view showing the configuration of a humidifying air cleaner according to an embodiment of the present invention. 1 is an exploded perspective view showing a partial configuration of a humidifying air cleaner according to an embodiment of the present invention. It is a figure showing the composition of the bottom of the water container by one embodiment of the present invention. 2 is a cross-sectional view along line VI-VI' in FIG. 1; FIG. FIG. 3 is a diagram illustrating an air filter and a water container disposed in a door according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a filter disposed on a door in a separated state according to an embodiment of the present invention; 1 is a perspective view of a door assembly according to one embodiment of the invention. FIG. 1 is a plan view of a door assembly according to one embodiment of the invention. FIG. FIG. 3 is a diagram illustrating an inner portion of a cabinet according to an embodiment of the invention. FIG. 2 is an exploded perspective view showing a housing assembly and its peripheral configuration according to an embodiment of the present invention. FIG. 3 is a rear perspective view of a fan housing according to one embodiment of the invention. FIG. 2 is an exploded perspective view of a blower fan and housing cover according to an embodiment of the invention. 15 is an enlarged view of "A" in FIG. 14. FIG. 2 is a diagram showing a partial configuration of a housing cover according to an embodiment of the present invention. 5 is a graph illustrating an experiment comparing exhaust air flow with and without an extension plate of a humidifying air cleaner according to an embodiment of the present invention. 5 is a graph illustrating an experiment comparing exhaust air flow with and without an extension plate of a humidifying air cleaner according to an embodiment of the present invention. 1 is a perspective view of an impeller according to an embodiment of the invention. FIG. FIG. 3 is a diagram showing the shape of an impeller blade according to an embodiment of the present invention. It is a figure which shows the shape of the blade of the impeller in related technology as a comparative example. FIG. 3 is a diagram showing the shape of a blade according to an embodiment of the present invention. It is a graph showing a change in noise depending on the air volume of an impeller in a related technology and an impeller according to an embodiment of the present invention. 5 is a graph illustrating noise due to air volume of a blade according to a predetermined angle TH according to an embodiment of the present invention. 5 is a graph illustrating noise caused by air volume according to a set length DL of a blade according to an embodiment of the present invention. FIG. 3 is a perspective view showing a rear configuration of a housing cover according to an embodiment of the present invention. FIG. 3 illustrates a sensor attached to a housing cover according to an embodiment of the invention. 1 is a diagram showing the configuration of a dust sensor according to an embodiment of the present invention. FIG. 2 is a front perspective view of a rear panel according to an embodiment of the invention. FIG. 3 is a rear perspective view of a rear panel according to one embodiment of the invention. FIG. 3 is a diagram showing a state in which an exhaust grille is removed from an upper surface portion of a rear panel according to an embodiment of the present invention. FIG. 3 is an enlarged view showing the configuration of a portion of the rear panel according to an embodiment of the present invention. 5 is a graph illustrating an experiment comparing exhaust airflow due to the slope of the grille guide of an exhaust grille according to an embodiment of the present invention. 5 is a graph illustrating an experiment comparing exhaust airflow due to the slope of the grille guide of an exhaust grille according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing the flow of air within the humidifying air cleaner according to an embodiment of the present invention. 1 is a schematic diagram showing a partial configuration of a humidifying air cleaner according to an embodiment of the present invention. FIG. 1 is a schematic diagram showing air flow within a humidifying air cleaner according to an embodiment of the present invention. FIG. 7 is a front view of a housing cover according to another embodiment of the invention. 36 is an enlarged view of the cut-off of the housing cover shown in FIG. 35. FIG. It is a perspective view which shows the housing cover in related technology as a comparative example. FIG. 7 is a perspective view of a housing cover according to another embodiment of the invention. It is a figure which shows the outline of the cutoff of the housing cover in related technology as a comparative example. FIG. 7 is a diagram schematically illustrating a cut-off of a housing cover according to another embodiment of the invention. It is a graph which shows the change of the noise with the air volume of the ventilation fan attached to the housing cover in related art, and the ventilation fan attached to the housing cover according to another embodiment of the present invention. It is a graph showing a change in noise depending on the operating frequency of a blower fan attached to a housing cover in a related technology as a comparative example. 7 is a graph showing a change in noise depending on the operating frequency of a blower fan attached to a housing cover according to another embodiment of the present invention. It is a figure which shows the outline of the cutoff of the housing cover in related technology as a comparative example. FIG. 7 is a diagram schematically showing a cutoff according to the position of an inflection point of a housing cover according to another embodiment of the present invention. FIG. 7 is a diagram schematically showing a cutoff according to the position of an inflection point of a housing cover according to another embodiment of the present invention. FIG. 7 is a diagram schematically showing a cutoff according to the position of an inflection point of a housing cover according to another embodiment of the present invention. 41A to 41D are graphs showing changes in noise depending on air volume of the blower fans attached to each housing cover shown in FIGS. 41A to 41D. FIG.

Reference will now be made in detail to embodiments of the disclosure, examples of which are illustrated in the accompanying drawings.

In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration certain preferred embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is understood that other embodiments may be utilized without departing from the spirit or scope of the invention. It is to be understood that logical structural, mechanical, electrical, and chemical changes may be made. The description may omit certain information known to those skilled in the art in order to avoid details not necessary to enable those skilled in the art to practice the invention. Therefore, the following detailed description should not be construed in a limiting sense.

Furthermore, in the description of the embodiments, terms such as first, second, A, B, (a), (b), etc. may be used herein when describing the constituent elements of the present invention. Each of these terms is not used to define the nature, order, or sequence of the corresponding component, but only to distinguish the corresponding component from other components.

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

Referring to FIGS. 1 and 2, a humidifying air purifier 10 according to an embodiment of the present invention has a cabinet 100 forming an exterior, coupled to the cabinet 100, selectively pulled out from the cabinet, and pulled into the cabinet. a door assembly 200 configured and supported.

Cabinet 100 includes a panel assembly comprised of multiple panels.

Specifically, the plurality of panels are coupled to the lower first base 101, both side panels 103 provided on both sides of the first base 101 and extending upward, and the upper side of the two side panels 103. and a rear panel 107 coupled to the rear side of both side panels 103.

The first base 101, the two side panels 103, the top panel 105, and the rear panel 107 allow the cabinet 100 to have the shape of a rectangular parallelepiped that is open to the front.

The panels may be made of wood. Therefore, the humidifying air cleaner 10 can provide the aesthetic feel of furniture. In other words, the appearance can be improved.

Air filter assembly 280, humidification filter assembly 300, and blower fan 480 (see FIG. 6) may be arranged in the interior space of cabinet 100.

Air filter assembly 280 and humidification filter assembly 300 may be collectively referred to as a "filter assembly."

The door assembly 200 can be opened by being pulled toward the front of the cabinet 100 or closed by being pulled toward the rear of the cabinet 100. Door assembly 200 includes a door panel 210 that constitutes a front portion of air cleaner 10. Door panel 210 is sometimes referred to as a "front panel."

Door panel 210 may be located on one side of cabinet 100. For example, door panel 210 may be placed at the front opening of cabinet 100. Thus, door panel 210 may form the front surface of cabinet 100. Therefore, the door panel 210 and the cabinet 100 can provide a sense of unity to the user.

A recessed portion 30 may be formed between the lower end of the door panel 210 and the first base 101, and a space recessed toward the rear may be formed.

An intake port 225 may be formed in the recessed portion 30 for sucking air into the cabinet 100.

The top panel 105 of the cabinet 100 is formed with an exhaust portion 109 through which filtered and humidified air is exhausted. The evacuation portion 109 may be located on the rear side of the top panel 105. In other words, the discharge portion 109 may be located at the rear upper portion of the humidifying air cleaner 10.

Door assembly 200 further includes a drawer 220 extending rearwardly from the rear surface of door panel 210.

Cleaning parts of the humidifying air cleaner 10 are attached to a drawer 220. Cleaning components may include an air filter assembly 280 and a humidifier. The humidification device may include a humidification filter assembly 300, a water tank 260, and a water container 270.

When the door assembly 200 is pulled forward to open the front surface of the cabinet 100, the air filter assembly 280, humidification filter assembly 300, and water container 270 disposed in the drawer 220 can be pulled forward together. Accordingly, a user can easily access air filter assembly 280, humidification filter assembly 300, and water container 270.

Drawer 220 may be coupled to cabinet 100 and configured and supported to be selectively pulled out or retracted into the cabinet. Accordingly, drawer 220 is sometimes referred to as a "door" or "receiving portion."

The door assembly 200 further includes a rail guide 230 that guides the operation of pulling out the door assembly 200 from the cabinet 100 or returning it into the cabinet 100. Rail guides 230 may be coupled to both sides of the bottom portion of drawer 220.

FIG. 3 is an exploded perspective view showing the configuration of a humidifying air cleaner according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view showing the configuration of a part of the humidifying air cleaner according to an embodiment of the present invention. 5 is a diagram showing the configuration of the bottom surface of a water container according to an embodiment of the present invention, and FIG. 6 is a sectional view taken along line VI-VI' in FIG. 1.

3-6, the humidifying air cleaner 10 according to one embodiment of the present invention includes an air filter assembly 280 for filtering air, a humidifying filter assembly 300 for humidifying the air, and a humidifying air cleaner 10 for filtering air. It includes a blower fan 480 for generating. A fan motor 483 is coupled to blower fan 480.

In particular, the cabinet 100 includes a body frame 110 that forms a spatial portion 112 in which the components of the air purifier are arranged.

The main body frame 110 may have a hexahedral shape with open front, rear, and top surfaces. Specifically, the front surface of the main body frame 110 is open, and the open front surface may be covered by the door assembly 200. Furthermore, the rear surface of the main body frame 110 is open, and the open rear surface can be covered by the fan housing 410 and the housing cover 430. Furthermore, the top surface of the main body frame 110 may be open, and the open top surface may be shielded by the electrical unit 450.

The two side panels 103 are coupled to both sides of the main body frame 110. Top panel 105 is coupled to the upper side of electrical unit 450 and rear panel 107 is coupled to the rear side of housing cover 430.

Door assembly 200 includes a door panel 210 forming a front appearance and a drawer 220 extending to the rear side of door panel 210.

Drawer 220 includes a door front surface 221 coupled to the rear surface of door panel 210. The door panel 210 and the door front surface 221 may be collectively referred to as a "door front section."

The drawer 220 includes a door side surface portion 222 extending rearward from both sides of a door front surface portion 221, a door lower surface portion 224 provided below the door side surface portion 222, and a door lower surface portion 224 extending upward from the rear side of the door lower surface portion 224. and an extending rear door portion 223 (see FIG. 7). The installation space in which the water tank 260, water container 270, air filter assembly 280, and humidifying filter assembly 300 are installed is defined in the drawer 220 by the door front part 221, the door bottom part 224, the door side part 222, and the door rear part 223. can be defined.

Air filter assembly 280 may be attached to the front portion of drawer 220. Air filter assembly 280 may include an air filter case 281 and an air filter 285 coupled to air filter case 281. Air filter assembly 280 may be arranged to be lifted upward and separated.

The water container 270 may be located approximately in the center of the drawer 220, that is, on the rear side of the air filter assembly 280 in the front-back direction.

Water container 270 may be attached inside aquarium 260. The water container 270 can be positioned to be lifted upward and separated from the water tank 260, and the user can separate the water container 270 to refill water or to clean the water container 270. can.

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 can be attached to the valve hole 275a. . The float device 276 opens a valve hole 275a when the float device 276 is placed on a valve support (not shown) provided in the water tank 260, and closes the valve hole 275a when the float device 276 is separated from the valve support. can operate.

The water tank 260 may have a substantially hexahedral shape with an open upper portion. A lower portion of water tank 260 includes a water container support portion 261 for supporting water container 270 . Water container support portion 261 forms a flat surface.

The water tank 260 further includes a float accommodating part 262 that protrudes downward from the water container support part 261 and has a space in which a float device 276 is attached. The float accommodating portion 262 may have a hollow shape with an empty interior, and for example, the float accommodating portion 262 may be disposed approximately in the center of the water container supporting portion 261.

The float storage portion 262 forms a first water storage portion 229a that stores water, and may be provided such that the float device 276 moves up and down depending on the water level stored in the first water storage portion 229a. At this time, when the water level of the first water storage portion 229a becomes equal to or higher than the set water level, the float device 276 is raised to close the valve hole 275a of the water container 270.

A second water storage portion 229b may be formed in the water tank 260 to extend rearward from the float storage portion 262 and store water. The second water storage portion 229b may communicate with the first water storage portion and form the same water level as the first water storage portion.

Humidification filter assembly 300 may be attached to second water storage portion 229b. Humidification filter assembly 300 may be housed in a rear portion of the interior space of drawer 220. Humidification filter assembly 300 may be placed on the rear side of water container 270.

A lower portion of the humidifying filter 330 included in the humidifying filter assembly 300 may be disposed to be immersed in the second water storage portion 229 .

The humidifying filter 330 has a substantially circular shape, and the outer portion of the humidifying filter 330 includes a lifter 332 (see FIG. 7) having a structure capable of retaining water. A plurality of lifters 332 may be provided. For example, the humidifying filter 330 may have a structure similar to that of a "water wheel."

Humidification filter 330 is rotatably provided. The water collected by the lifter 332 moves upward, and as the lifter 332 descends from the top end of the humidifying filter 330, gravity causes water to flow into the central portion of the humidifying filter 330. Humidification filter 330 may be made of cloth, felt, or sponge material that tends to absorb water.

The lifter 332 can collect water by rotation. Lifter 332 may therefore be referred to as a collection portion.

A sterilizer 269 for irradiating light into the water tank 260 is disposed at the rear of the water tank 260 to sterilize the water stored in the water tank 260. For example, sterilizer 269 may include ultraviolet LEDs.

Humidification filter assembly 300 may be located in the rear portion of drawer 220, ie, on the back side of water container 270. The humidifying filter assembly 300 includes a humidifying filter case 310 and a humidifying filter 330 rotatably supported by the humidifying filter case 310 and absorbing water stored in the water tank 260 .

Humidifying air cleaner 10 further includes a housing assembly 400 disposed inside cabinet 100. The housing assembly 400 includes a fan housing 410 having a blower fan 480 for generating airflow, a fan inlet 415 disposed in front of the blower fan 480 to draw air into the fan housing 410, and a rear side of the fan housing 410. A housing cover 430 coupled to the housing cover 430 is provided.

The blower fan 480 may be attached to a fan installation space SP (see FIG. 16) defined by the fan housing 410 and the housing cover 430.

Housing assembly 400 may be located on the rear side of door assembly 200.

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

Fan housing 410 includes a fan inlet 415 (see FIG. 11). Fan inlet 415 may include a radially or circumferentially extending inlet guide rib. The intake guide rib can prevent the user's hand from being introduced into the blower fan 480.

Humidifying air cleaner 10 further includes an electrical unit 450 having a plurality of electrical components. The electrical unit 450 further includes an electrical plate 451 covering the open upper part of the main body frame 110, and an electrical component 453 may be attached to the upper surface of the electrical plate 451.

Further, the electrical unit 450 may further include an electrical cover 455 for shielding at least a portion of the plurality of electrical components 453.

Electrical plate 451 may extend forwardly from the upper portion of housing assembly 400. Top panel 105 is coupled to the top of electrical plate 451 to protect electrical components 453.

A slide rail 235 may be installed inside the body frame 110 to guide the operation of inserting and removing the door assembly 200.

The slide rails 235 may be disposed on both sides of the lower portion of the body frame 110. The rail guide 230 provided in the door assembly 200 can slide in the front-rear direction along the slide rail 235.

The rail cover 236 is arranged outside the slide rail 235. With the rail cover 236, the slide rail 235 does not have to be exposed to the outside.

In other words, the rail cover 236 can cover the slide rail 235 so that the slide rail 235 is not exposed to the space portion 112.

The body frame 110 further includes a lighting bracket 116 to which a lighting device is attached. The lighting bracket 116 may be placed above the base 101 of the cabinet 100. The recessed portion 30 may be understood as the space between the base 101 and the lighting bracket 116.

The lighting device includes a lighting PCB 122 having a lighting source and a lighting case 124 coupled to the lighting PCB 122. Multiple illumination sources may be provided.

The lighting case 124 includes dividing ribs for dividing the interior space of the lighting case 124 into a plurality of spaces, and the lighting sources may be arranged in each of the plurality of spaces.

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

FIG. 7 is a diagram illustrating an air filter and a water container disposed on a door according to an embodiment of the present invention, and FIG. 8 is a diagram illustrating a state in which a filter disposed on a door is separated according to an embodiment of the present invention. FIG. 9 is a perspective view of a door assembly according to an embodiment of the present invention, FIG. 10 is a plan view of a door assembly according to an embodiment of the present invention, and FIG. FIG. 2 is a diagram illustrating an inner portion of a cabinet according to an embodiment of the invention.

Referring to FIGS. 7-11, a door assembly 200 according to an embodiment of the invention includes a drawer 220 coupled to a rear surface of a door panel 210. Referring to FIGS.

The drawer 220 may be provided so as to be drawn forward and drawn back, or may be provided in the shape of a drawer.

Drawer 220 may include an air filter assembly 280, a humidification filter assembly 300, a water container 270, and an aquarium 260.

The drawer 220 includes a door front portion 221 that forms the front surface of the drawer 220, a door lower surface portion 224 that forms the bottom surface of the drawer 220, a door side surface portion 222 that extends upward from both sides of the door lower surface portion 224, and a door side surface portion 222 that extends upward from both sides of the door lower surface portion 224. A door rear surface portion 223 provided on the rear side of the portion 222 is included.

An intake port 225 through which air is sucked is formed in the lower surface portion 224 of the door. The intake port 225 may be located on the rear side of the door front portion 221 and may be formed by penetrating at least a portion of the door lower surface portion 224. Air outside the humidifying air cleaner 10 is drawn into the air intake port 225 via the recessed portion 30. Additionally, the sucked air can flow upwards.

Door underside portion 224 includes an air filter pedestal portion 226 on which an air filter assembly 280 is seated. Air filter pedestal portion 226 is located behind air intake 225 and provides a flat surface for seating the bottom of air filter assembly 280 .

Door side portion 222 includes a filter guide 225a for supporting a side portion of air filter assembly 280. The filter guide 225a may extend upward from both sides of the air filter pedestal portion 226, or may extend obliquely forward from the lower portion toward the upper portion. Therefore, since the air filter assembly 280 is disposed diagonally forward and diagonally while seated on the air filter pedestal portion 226, the user can easily lift the air filter assembly 280 upward and separate the air filter assembly 280 from the drawer 220. can do.

The door side portion 222 further includes a filter support 225b that extends from the filter guide 225a in the left-right direction and supports a portion of the front portion of the air filter assembly 280. The filter support 225b may function as a "support jaw" that supports the air filter assembly 280 so that the air filter assembly 280 does not fall forward when the air filter assembly 280 is arranged at an angle.

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

The door lower surface portion 224 further includes an aquarium pedestal portion 227 on which an aquarium 260 is placed. The water tank pedestal portion 227 may be arranged at a lower position than the air filter pedestal portion 226.

A through hole 228 in which a sterilizer 269 is disposed is formed in the rear surface portion 223 of the door. For example, the sterilizer 269 may be placed inside the through hole 228 or on the rear side of the through hole 228.

The light emitted from the sterilizer 269 can be transmitted to the water tank 260 through the through hole 228 to sterilize the stored water.

Water container 270 is placed above water tank 260. The water container 270 includes a water container body that stores water, and a water container cover that is detachably coupled to the top of the water container body. The user can separate the water container cover to refill the water within the water container body.

When the water container 270 is placed in the water tank 260, the float device 276 of the water container 270 is opened and the water stored in the water container 270 flows into the water storage portion of the water tank 260.

A humidification filter assembly 300 may be attached to the water tank 260. The humidifying filter assembly 300 may be disposed on the rear side of the water container 270, and a lower portion of the humidifying filter assembly 300 may be disposed to be immersed in the second water storage portion 229.

Humidification filter assembly 300 includes a humidification filter case 310 having a shaft support 315 and a humidification filter 330 having a central shaft 335 supported by shaft support 315. The central shaft 335 of the humidifying filter 330 can rotate clockwise or counterclockwise while being supported by the shaft support 315.

Humidification filter 330 includes a lifter 332 for pumping up water stored in second water storage portion 229 of aquarium 260 . Water pumped from lifter 332 may be moved upward in the process flowing downward to humidification filter 330 as lifter 332 rotates and moves downward. Water flowing downward into humidification filter 330 can permeate humidification filter 330 .

The humidifying air cleaner 10 further includes a drive motor 353 (see FIG. 6) and a drive gear 355 that is coupled to the drive motor 353 and rotates as a drive device that rotates the humidification filter 330. Drive motor 353 and drive gear 355 may be attached to fan housing 410.

Humidification filter 330 includes a filter gear 338 that meshes with drive gear 355 . Filter gear 338 is provided on the outer surface of humidification filter 330 , and the teeth of filter gear 338 can engage with the teeth of drive gear 355 . When the drive motor 353 is driven, the filter gear 338 can rotate clockwise or counterclockwise by meshing with the drive gear 355.

FIG. 12 is an exploded perspective view of a housing assembly and its surrounding configuration according to an embodiment of the invention, FIG. 13 is a rear perspective view of a fan housing according to an embodiment of the invention, and FIG. FIG. 2 is an exploded perspective view of a blower fan and housing cover according to an embodiment of the invention.

The fan housing 410 includes a housing plate 411 for shielding a rear portion of the main body frame 110.

The housing plate 411 is coupled to the main body frame 110 and covers the open rear end portion of the main body frame 110.

A fan intake port 415 through which air is sucked is formed in the housing plate 411. Fan inlet 415 may include a radially or circumferentially extending inlet guide rib. For example, fan inlet 415 may be located at the center of housing plate 411.

Air within body frame 110 may flow toward housing cover 430 through fan inlet 415 .

An electrical plate 451 having a plurality of electrical components attached thereto may be coupled to an upper portion of the housing plate 411.

Electrical plate 451 may be integrally formed with housing plate 411. For example, the electric plate 451 and the housing plate 411 may be formed in a "┐" shape.

Housing plate 411 may be coupled to housing cover 430 at the rear. The combination of the housing plate 411 and the housing cover 430 can guide the flow direction of the air forced by the blower fan 480.

Fan housing 410 further includes a mounting rib 413 to which a fan motor 483 (described later) is attached.

Attachment rib 413 extends rearward from the rear surface of housing plate 411. For example, the mounting rib 413 may be formed in a central portion of the fan inlet 415. The mounting rib 413 is formed in a hollow cylindrical shape relative to the center portion of the fan intake port 415.

In other words, the mounting rib 413 may be formed to protrude circularly from the rear surface of the housing plate 411.

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

The fan housing 410 further includes a restriction rib 417 for guiding engagement of the housing cover 430. The restriction rib 417 may form a space or a 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 restriction rib 417 guides the housing cover 430 so that the housing cover 430 can be accurately coupled to a designated position on the rear surface of the fan housing 410 . For example, the front ends of the outer surfaces 432, 433, 434 of the housing cover 430 may be inserted into or secured to the limiting ribs 417. Therefore, it is possible to guide air flow into the internal space formed by the housing cover 430 and the fan housing 410.

In other words, the front surface of the housing cover 430 may be 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. An air flow path passing through the blower fan 480 may be formed in the internal space.

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

For example, the limiting rib 417 may have an open curved shape. For example, the restricting rib 417 can be rounded in the shape of a curved band that opens on the rear surface of the housing plate 411.

Meanwhile, the blower fan 480 may include an impeller 485 for drawing in and discharging air.

The impeller 485 may be rotatably mounted within the housing cover 430 by receiving the rotational force of the fan motor 483.

Specifically, a mounting hole 487 may be formed in the hub 486 of the impeller 485. The attachment hole 487 may be provided with a lock portion 481 to which a rotating shaft of the fan motor 483 is connected. Therefore, impeller 485 can rotate together with locking portion 481. Of course, the locking portion 481 may be formed integrally with the hub 486 of the impeller 485.

Further, the blower fan 480 may further include a fan motor 483 for generating electric power and a motor cover 482 for attaching the fan motor 483 to the mounting rib 413.

The fan motor 483 may be accommodated and fixed in the fan motor installation space 413a of the mounting rib 413. A rotating shaft of fan motor 483 is connected to lock portion 481 to transmit rotational force to impeller 485.

An opening is formed in the center of the motor cover 482 , through which the rotating shaft of the fan motor 483 passes and is connected to the lock portion 481 . In other words, the motor cover 482 may be placed between the fan motor 483 and the lock portion 481.

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

The cover plate 431 can be understood as the rear surface of the housing cover 430, and the guide plates 432, 433, 434 can be understood as the outer surface or side surface of the housing cover 430.

In other words, the cover plate 431 is provided so as to constitute the rear surface of the housing cover.

Since the guide plates 432, 433, 434 guide the flow direction of the air passing through the blower fan 480, the guide plates 432, 433, 434 can be called guide walls.

Cover plate 431 is spaced apart from the rear of fan housing 410.

The guide plates 432 , 433 , 434 may extend towards the fan housing 410 at the front of the cover plate 431 . Therefore, the cover plate 431 and the guide plates 432, 433, and 434 form a space in which the blower fan 480 is accommodated.

The guide plates 432, 433, 434 may extend so as to guide the air passing through the blower fan 480 radially upward.

In particular, the guide plates 432, 433, 434 may extend forward around the outer end portion of the cover plate 431. For example, guide plates 432, 433, 434 can extend vertically along the edges of cover plate 431.

Therefore, the guide plates 432, 433, and 434 can contact the rear surface of the fan housing 410. For example, the front ends of guide plates 432, 433, 434 may contact or be inserted into limiting ribs 417 of housing plate 411.

As a result, fan housing 410, cover plate 431, and guide plates 432, 433, 434 can guide the air flow forced by blower fan 480. The air flow forced by the blower fan 480 may form a scroll channel.

Therefore, fan housing 410 and housing cover 430 can be collectively referred to as a "scroll housing." In other words, the blower fan 480 may be arranged inside the scroll housings 410, 430.

Housing assembly 400, including fan housing 410, housing cover 430, and blower fan 480, may be referred to as a "blowing device."

Here, the air flow path introduced into the blower fan 480 through the fan intake port 415 of the housing plate 411 can be referred to as an "intake flow path." The air flow path that is discharged from the blower fan 480 and flows into the exhaust portion 109 can be referred to as a "discharge flow path."

The discharge flow path includes a first discharge flow path 430a that flows along a first guide 432, which will be described later, and a second discharge flow path 430b that flows along a second guide 433 to an open end portion 431a. It is divided by .

Cover plate 431 and guide plates 432, 433, 434 may define openings along their upper ends so that air flowing along exhaust channels 430a, 430b is directed to exhaust portion 109.

In other words, the open end portion 431a may be formed at the upper end of the cover plate 431. Furthermore, the open end portion 431a may be understood as an edge forming an opening. The discharge portion 109 may cover the upper side of the open end portion 431a.

Therefore, the air discharged from the blower fan 480 in the radial direction can flow to the upper portion of the housing cover 430, that is, the open end portion 431a. Air that has entered the upper portion of the housing cover 430 is exhausted to the outside through the exhaust portion 109.

Here, the opening formed by the open end portion 431a, the upper end of the second guide 433, the upper end of the third guide 434, and the upper end of the housing plate 411 may be defined as a discharge port.

In other words, the discharge port can be understood as an opening located downstream of the second discharge channel 430b and for guiding the air discharged into the discharge portion 109.

The guide plates 432, 433, 434 may extend in a shape corresponding to the limiting rib 417. For example, the guide plates 432, 433, 434 may extend circularly from one top end of the cover plate 431 to the other top end.

In other words, the guide plates 432, 433, 434 may have a substantially open curved shape corresponding to the limiting rib 417.

In detail, the guide plates 432, 433, 434 may include a first guide 432, a second guide 433, and a third guide 434.

On the other hand, since the first guide 432 guides the air discharged from the blower fan 480 upward, the first guide 432 can be called a "flow guide wall." Additionally, the second guide 433 extends from the flow guide wall and can therefore be referred to as an "extended guide wall." Since the third guide 434 directs air towards the exhaust portion 109, the third guide 434 can be referred to as an "exhaust guide wall."

The second guide 433 may extend downward from the upper end of one side of the cover plate 431 to a first point. For example, the second guide 433 may extend downward along one side edge of the cover plate 431.

Here, the first point may be located on one side of the cover plate 431. More specifically, the first point is rotated by a predetermined first angle θ (see FIG. 16) along the air flow direction F from the vertical reference line D around a reference point (O) described below. It can be defined as a point located on a virtual extension line. For example, the first angle θ may be set to 270°.

The second guide 433 may extend upward from the upper end of one side of the first guide 432. In other words, the second guide may extend upwardly at the first point.

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

The first guide 432 may extend circularly so as to surround the outer periphery of the blower fan 480.

In particular, the first guide 432 may extend from a first point to a second point (cutoff portion) 435 in a rounded manner.

The second point may be located above the first point. Furthermore, the second point can be understood as the point at which the cut-off portion 435 is formed.

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

In other words, the first guide 432 may extend in an arc from the lower end of the second guide 433 to the cutoff portion 435 about the reference point.

A third guide 434 can extend from the first guide 432 on the opposite side of the second guide 433.

The third guide 434 may extend from a cut-off portion 435 formed at the upper end of the other end of the first guide 432 . In other words, the third guide 434 may extend diagonally upwardly and away from the second guide 433 at the second point.

The third guide 434 may be located near the other side panel of the pair of side panels 103 (see FIG. 3). In one example, third guide 434 may be adjacent to the right side panel.

The third guide 434 may extend from the second point 435 to the upper end of the other end of the cover plate 431 . Here, the third guide 434 may extend obliquely toward the downstream of the second discharge flow path 430b.

In other words, the third guide 434 can extend from the upper end of the first guide 432 to the extension plate 436, which will be described below.

In particular, the third guide 434 may extend from the cut-off portion 435 to an end portion on one side of the extension plate 436.

A rear end portion 432a (see FIG. 16) of the first guide 432 may be connected to a rear end portion 434a of the third guide 434. A front end portion 432b (see FIG. 16) of the first guide 432 may be connected to a front end portion 434b of the third guide 434.

The third guide 434 may be formed so that its inner surface is inclined. Here, the inner surface of the third guide 434 can be understood as a surface facing the second discharge flow path 430b.

In other words, the rear end portion 434a of the third guide 434 may be located inside the front end portion 434b of the third guide 434.

Thereby, the inner surface of the third guide 434 from the rear end portion 434a of the third guide 434 to the front end portion 434b of the third guide 434 can be formed as an inclined surface.

On the other hand, the sloped surface of the third guide 434 may extend perpendicularly to the cover plate 431 at the point where the sloped surface of the third guide 434 is connected to the extension plate 436.

In other words, the rear end portion 434a of the third guide 434 has a larger arc along the extending direction of the third guide 434 than the front end portion 434b of the third guide 434. In other words, the rear end portion of the third guide may be longer than the front end portion of the third guide (see FIG. 15).

An extension plate 436 may extend laterally from the upper end of the third guide 434. Here, the side can be understood as the direction away from the second guide 433.

For example, the distance from the top end of the third guide 434 to the other side panel (right side panel 103) is longer than the distance from the top end of the second guide 433 to one side panel (left side panel 103). It can be large.

Furthermore, when the upper end of the third guide 434 is viewed downward, the upper end of the third guide 434 and the first guide 432 may be arranged to overlap with each other. In other words, the upper end of the third guide 434 may be spaced upward from the first guide 432.

The guide plates 432, 433, and 434 may have cut-off portions 435 formed therein.

The cutoff portion 435 may be formed such that the first guide 432 and the third guide 434 are connected in a circular manner.

The cutoff portion 435 may include the second point described above as a portion where the first guide 432 and the third guide 434 come into contact.

The cutoff portion 435 can be understood as a reference for distinguishing the first discharge channel 430a and the second discharge channel 430b. Here, for convenience of explanation, the division of the flow path is an arbitrary division, and is not a physical division.

Meanwhile, a portion of the air flowing into the second exhaust flow path 430b may collide with the cutoff portion 435 and flow back into the first exhaust flow path 430a. Noise may occur during collision and re-inflow.

In this regard, a detailed description of cutoff portion 435 is provided below with reference to FIG.

Meanwhile, the guide plates 432, 433, and 434 may be formed such that the cross-sectional area of the air flow path formed inside the housing cover 430 increases upward. In detail, the width W of the discharge channels 430a, 430b may gradually increase along the airflow direction F from the cutoff portion 435.

The width W of the discharge channels 430a, 430b may be defined as the distance from the rotation axis S of the impeller 485 to the inner surfaces of the guide plates 432, 433, 434. In detail, the width W of the discharge channels 430a, 430b may be defined as the distance between the guide plates 432, 433 and the rotation axis S in the radial direction of the impeller 485.

In other words, the width W of the discharge channel may increase along the airflow direction F from the cutoff portion 435 toward the open end portion 431a. For example, the distance W1 between the cutoff portion 435 and the outer surface of the impeller 485 at a radial distance W1 about the reference point O is smaller than the other radial distance W2 along the air flow direction.

Therefore, the flow cross-sectional area of the discharge channel may gradually increase from the cut-off portion 435 along the airflow direction F. Therefore, flow resistance of air passing through the blower fan 480 is reduced, and noise generated from the upper fan 130 can be reduced.

Meanwhile, the housing cover 430 further includes a coupling bracket 438 coupled to the rear panel 107.

Coupling brackets 438 may be provided on both sides and the top portion of housing cover 430. In other words, the coupling bracket 438 may be provided on the outer surface of the guide plates 432, 433, 434.

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

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

In other words, the sensor bracket 440 may be mounted in a space within the housing cover 430 where there is no air flow, ie, air intake or exhaust. For example, the sensor bracket 440 may be connected to the lower surface of the extension plate 436 and the outer surface of the first guide 432 such that an opening is formed outwardly of the cutoff portion 435.

A through hole 446 may be formed between the sensor bracket 440 and the guide plates 432 and 434.

Wires connected to a plurality of sensors 500 , 550 , 560 attached to sensor bracket 440 may be disposed within through-hole 446 . In other words, the through hole 446 may be called a wire connector.

The sensor bracket 440 includes a bracket main body 441 to which a plurality of sensors 500, 550, and 560 are attached, and bracket supports 443 and 445 for supporting the bracket main body 441.

Bracket supports 443, 445 may be coupled to support bracket body 441 to housing cover 430. For example, the bracket supports 443 and 445 include a first support 443 for connecting the upper portion of the bracket body 441 to the outer surface of the guide plate 434 and a first support 443 for connecting the lower portion of the bracket body 441 to the outer surface of the guide plate 432. A second support body 445 is provided.

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

Furthermore, a virtual vertical line perpendicular to the rotation axis S is defined as a vertical reference line D. At this time, the reference point O can be understood as the point where the rotation axis S intersects with the vertical reference line D, that is, the leg of the vertical line. Therefore, the vertical reference line (D) can be understood as a virtual vertical line drawn upward from the reference point (O).

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

Air flow through housing assembly 400 will be described in detail below. Air flowing into the blower fan 480 in the direction of the rotation axis S flows to the open end portion 431a along a scroll passage formed by the guides of the fan housing 410 and the housing cover 430.

As described above, the air flow path discharged from the blower fan 480 and guided to the discharge portion 109 includes the first discharge flow path 430a through which air flows along the guide of the first guide 432, and the second guide 433. and a second discharge flow path 430b through which air flows into the open end portion 431a along the guide.

Therefore, the air that has flowed into the blower fan 480 may be discharged in the radial direction, and the air discharged in the radial direction flows in a curved shape along the first discharge channel 430a, and then flows into the second discharge channel. 430b, the air flowing into the second exhaust flow path 430b flows upward along the direction of the vertical reference line D and passes through the exhaust portion 109 located above the open end portion 431a. It may be discharged to the outside.

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

Referring to FIG. 15, the cutoff portion 435 extends from the rear end contact point 435a where the rear end portion 432a of the first guide 432 and the rear end portion 434a of the third guide 434 are connected. It may be formed to extend to a front end contact point 435b where the front end portion 432b and the third guide front end portion 434b are connected.

The rear end portion 434a of the third guide 434 may be located inside the front end portion 434b of the third guide 434. Therefore, the rear end contact point 435a may be located further inside than the front end contact point 435b.

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

The inner surface of cutoff portion 435 extending from rear end contact point 435a to front end contact point 435b of cutoff portion 435 may be curved. For example, the inner surface of the cutoff portion 435 may form a curved surface with recessed surfaces and protruding surfaces that are repeated vertically and/or in the front-back direction.

Therefore, the flow resistance of air colliding with the cutoff portion 435 can be reduced.

In other words, the inner surface of the cutoff portion 435 may form a convex portion and a concave portion (dotted line).

In other words, the inner surface of the cutoff 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 blower fan 480.

Specifically, the inner surface of the cutoff portion 435 includes a convex portion formed to protrude inward from the rear end contact point 435a to the cutoff center point O', and a convex portion formed to protrude inward from the cutoff center point O' to the front end. and a concave portion recessed outward to the contact point 435b.

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

In other words, cutoff portion 435 may form an arcuate inner surface.

As described above, a portion of the air that has flowed into the second exhaust flow path 430b may collide with the cutoff portion 435 and flow back into the first exhaust flow path 430a. The collision and re-inflow process may generate noise.

In other words, the cut-off portion 435 can be understood as the boundary between the exhaustion and re-intake of the air flow inside the housing cover 430.

As a result of experiments, the flow distribution of the air impinging on the cutoff portion 435 does not increase linearly along the rotation axis direction S of the blower fan 480. Therefore, internal flow noise (BPF) may occur in the cutoff portion 435 due to pressure difference or pressure concentration due to collision of fluid (air).

According to an embodiment of the present invention, an inner surface of the cut-off part 435 is proposed, which is formed with a convex part and a concave part to reduce the impingement of fluid (air) within the cut-off part 435. Thereby, internal flow noise (BPF) can be reduced.

On the other hand, the third guide 434 may extend from the cutoff portion 435 in the air discharge direction. At the same time, the third guide 434 can be extended so that the inclination angle of the third guide 434 with respect to the cover plate 431 changes in the direction of air discharge.

Specifically, the third guide 434 has a cut-off portion where the inclination angle of the third guide 434 with respect to the cover plate 431 connects the rear end contact point 435a, the inflection point O', and the front end contact point 435b. 435, it may be formed so as to gradually become vertical along the discharge direction. In other words, the third guide 434 may form a three-dimensional shape.

Here, when the inclination angle between the cover plate 431 and the third guide 434 forms an acute angle, the change in the inclination angle may gradually increase to become vertical, and the inclination angle between the It may gradually decrease and change to become vertical when forming an obtuse angle. Therefore, the end of the third guide 434 may be perpendicular to the cover plate 431.

Therefore, the air flowing toward the open end portion 431a along the third guide 434 flows along the inner surface of the third guide 434, that is, the inclined surface. Therefore, the flow resistance is relatively small and the flow cross-section increases along the flow direction. As a result, internal flow noise can be reduced.

FIG. 16 is a diagram showing a partial configuration of a housing cover according to an embodiment of the present invention. In particular, FIG. 16 is a diagram in which the sensor bracket 440 described above is omitted to more easily show the extension plate 436.

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

The cutting portion 433a may be formed such that the upper portion of the second guide 433 slopes rearward toward the upper end. Furthermore, the width of the cut portion 433a may increase toward the upper end.

A hole may be formed in the cut portion 433a to guide the coupling with the fan housing 410. The holes may be attached to housing plate 411.

Housing cover 430 further includes an extension plate 436 extending from third guide 434 .

Extension plate 436 may be located below exhaust portion 109 and exhaust grille 170.

The extension plate 436 may extend laterally from the upper end of the third guide 434 along the upper end of the cover plate 431 .

In other words, the extension plate 436 may be bent from the third guide 434 and extend along the upper end of the housing cover 430. For example, the extension plate 436 may be bent from the third guide 434 and extend to the side end of the cover plate 431.

The extension plate 436 and the third guide 434 may be bent inside the housing cover 430.

Furthermore, the extension plate 436 may include a stepped rib 436a that forms a step so that a discharge grille 170 (see FIG. 27), which will be described later, is seated thereon. The exhaust grill 170 can be supported together with a grill installation groove 107f (see FIG. 27), which will be described later, via the stepped rib 436a.

The extension plate 436 may extend along the upper end of the cover plate 431 by a predetermined length L. For example, the predetermined length L may be set to approximately 75 mm.

In another aspect, extension plate 436 may extend perpendicularly from the top end of cover plate 431. In other words, the extension plate 436 may extend forward from the cover plate 431 by a predetermined length L.

Extension plate 436 may be located downstream of second exhaust channel 430b. In other words, the extension plate 436 may be located next to the evacuation port.

This allows the flow direction of the air discharged through the discharge portion 109 to be guided relatively upward compared to the case where the extension plate 436 is not formed.

For convenience of explanation, assume that the third guide 434 extends directly from the cutoff portion 435 to the upper end of the cover plate 431 (dotted line).

In the above assumption, the virtual third guide V and the cover plate 431 extend so that the concave space formed by the extension plate 436 and the third guide 434 is included in the second discharge flow path 430b. Can be done.

In other words, the discharge port can extend to both ends of the cover plate 431. Therefore, the flow cross-sectional area can also be expanded in proportion.

The extending direction of the virtual third guide V may have a larger angle with respect to the vertical reference line D than the extending direction of the third guide 434.

Therefore, the air passing through the exhaust section 109 following the guidance of the virtual third guide V forms a flow of exhaust air that is laterally biased from the air passing through the exhaust section 109 following the guidance of the third guide 434. be able to.

17A and 17B are graphs illustrating an experiment comparing exhaust air flow with and without an extension plate of a humidifying air cleaner, according to an embodiment of the invention.

FIG. 17A is an experimental graph showing the flow (pressure) distribution of air discharged from the discharge portion 109 of a humidifying air cleaner equipped with a virtual third guide V. FIG. 17B is an experimental graph showing the flow distribution of the air discharged from the discharge section 109 of the humidifying air cleaner with the third guide 434 and the extension plate 436.

Referring to FIGS. 17A and 17B, a person lying on a bed and the distribution of air flow (pressure) discharged from a humidifying air cleaner placed near the bed can be confirmed. At this time, the height of the discharge portion 109 of the humidifying air cleaner is set to the same position as the height of the human head where the artificial respirator is located.

Referring to FIG. 17A, the air discharged through the discharge portion 109 of the humidifying air cleaner provided with the virtual third guide V is relatively biased towards one side where a person is located. discharged in a state. Therefore, the exhaust air can form an airflow that directly touches the human head.

Referring to FIG. 17B, the air discharged through the discharge part 109 of the humidifying air cleaner with the third guide 434 and the extension plate 436 does not directly reach the head, but the air is concentrated relatively upward. can form a flow.

In the experiment shown in FIG. 17B, the predetermined length L of the extension plate 436 was set to 75 mm.

In other words, the extension plate 436 can relatively concentrate the air discharged from the discharge portion 109 upward.

The humidifying air cleaner 10 according to the embodiment of the present invention is a household humidifying air cleaner used as furniture such as a bookshelf or a table. It is therefore possible to envisage layout embodiments similar to furniture typically arranged in indoor spaces.

For example, a user may place a humidifying air purifier near the bed to create a more comfortable sleeping environment for the user. In this case, the location of the air exhaust part of the home humidifying air purifier, which is formed to provide functions such as a bookshelf or table, should generally be placed relatively close to the ventilator of an adult lying in bed. Can be done.

Therefore, air discharged from a humidifying air cleaner placed near the bed may reach the user directly. Therefore, the user may feel uncomfortable or it may be hygienic.

Meanwhile, the humidifying air cleaner 10 according to the embodiment of the present invention may be guided so that the direction of air discharge along the extension plate 436 is concentrated upward. Therefore, in the above usage environment, it is possible to prevent the discharged air from directly reaching the user.

Finally, according to the humidifying air cleaner 10, user convenience can be improved and the degree of freedom in product placement can be increased.

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

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

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

Impeller 485 further includes a fixed portion 492 provided at the front portion of the plurality of blades 488. Securing portion 492 serves to secure the plurality of blades 488. The rear end portions of the plurality of blades 488 may be coupled to the main plate 490 and the front end portions of the blades 488 may be coupled to the fixed portion 492.

Fan motor 483 is located in front of hub 486 of impeller 485. Fan motor 483 may be attached to mounting rib 413 of fan housing 410.

Motor cover 482 and locking portion 481 may be located behind fan motor 483. Motor cover 482 can attach/fix fan motor 483 to mounting rib 413 of fan housing 410 . The lock portion 481 is coupled to the rotating shaft of the fan motor 483 and disposed on the hub 486 so that the rotational power of the fan motor 483 is transmitted to the impeller 485.

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

Blade 488 according to one embodiment of the invention may have a unidirectionally curved airfoil shape.

In particular, at least a portion of the chord C of the blade 488 may be formed to be located on the outside of the blade 488 and facing the pressure surface 601. In this case, the chord C of the blade means an imaginary straight line connecting the leading edge 603 and the trailing edge 604.

Further, the pressure side 601 of the blade 488 may be concave and the suction side 602 may be convex.

Impeller 485 can rotate in a direction in which pressure surface 601 of blade 488 receives air pressure. Air drawn into the impeller 485 through the fan inlet 415 (see FIG. 6) hits the leading edge 603 and flows along the surfaces of the pressure side 601 and the suction side 602, and the air flow is separated at the trailing edge 604. obtain.

Blade 488 may be formed with a predetermined leading radius R.

Hereinafter, in order to explain in detail the shape of the blade 488 of the present invention, first, virtual points, virtual lines, etc. that serve as the reference of the structure will be defined.

The average camber line 656 may mean an imaginary line connecting the centers of imaginary circles inscribed in the pressure surface 601 and the suction surface 602.

Camber means the distance between the average camber line 656 and the chord C, and the maximum value of camber can be called maximum camber M. Further, the distance between the leading edge 603 and the point 655 having the maximum camber M on the average camber line 656 can be referred to as the maximum camber position ML.

It is possible to construct a virtual circle 654 centered on a point 655 corresponding to the maximum camber position ML of the average camber line 656 and inscribed in the positive pressure surface 601 and the negative pressure surface 602. In this case, the point of contact between virtual circle 654 and suction surface 602 may be referred to as maximum camber point 658. In other words, the maximum camber point 658 may mean a point on the negative pressure surface 602 that corresponds to the maximum camber position ML.

Suction surface 602 may include a first linear surface 606 and a second linear surface 607 located between maximum camber point 658 and leading edge 603.

Since the first linear surface 606 and the second linear surface 607 are formed flat, it is difficult to determine the camber line according to the above definition regarding the first linear surface 606 and the second linear surface 607. obtain.

Therefore, an imaginary line 657 can be constructed that connects the leading edge 603 with a point 655 corresponding to the maximum camber position ML of the average camber line 656. The imaginary line 657 can maintain a predetermined distance from the pressure surface 601, and the distance d between the imaginary line 657 and the pressure surface 601 can be the same as the radius d of the imaginary circle 654.

The imaginary line 657 indicates that the suction surface 602 does not include the first linear surface 606 and the second linear surface 607, but instead includes a curved surface that streamlines the leading edge 603 and the maximum camber point 658 to each other. It can mean the average camber line of the blade if it is assumed to include.

In other words, the virtual line 657 can be called a virtual average camber line.

Reference point 605A may be located on suction surface 602.

In particular, the reference point 605A may be located between the maximum camber point 658 and the leading edge 603 along the suction surface. The reference point 605A may mean the point where the distance from the negative pressure surface 602 to the positive pressure surface 601 is maximum.

In other words, the distance t from the suction surface 602 to the positive pressure surface 601 can be maximized at the reference point. The distance may be the minimum distance t from a point on the suction surface 602 to the pressure surface 601, and may mean the thickness of the blade 488.

The distance t between pressure surface 601 and suction surface 602 can increase from leading edge 603 to reference point 605A and decrease from reference point 605A to trailing edge 604.

A first imaginary straight line 651 can be constructed that touches the imaginary line 657 at the leading edge 603.

Specifically, among the tangents at one point, the tangent line when one point on the virtual line 657 is as close as possible to the leading edge 603 can be the first virtual straight line 651 . Furthermore, a second virtual straight line 652 can be constructed that connects the leading edge 603 and the reference point 605A.

The angle formed by the first virtual straight line 651 and the second virtual straight line 652 can be called a predetermined angle TH, and the predetermined angle TH may be an acute angle. More specifically, the predetermined angle TH may be 7.5 degrees to 23 degrees.

The distance DL between the leading edge 603 and the reference point 605A in the direction parallel to the first virtual straight line 651 can be called a predetermined distance DL, and the predetermined distance DL is shorter than the maximum camber position ML of the blade 488. It's okay.

Further, the predetermined distance DL may be 0.21 to 0.27 times the chord length CL of the blade 488.

The exact position of the reference point 605A can be determined by a predetermined angle TH and a predetermined distance DL.

The suction surface 602 of the blade 488 will be described in more detail below.

Suction surface 602 of blade 488 according to embodiments of the 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 603, and the second linear surface 607 may be located between the reference point 605A and the maximum camber point 658. .

The first linear surface 606 and the second linear surface 607 may each be formed flat, or may be formed obliquely 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 can move away from the leading edge 603 toward the reference point 605A, and the distance between the second linear surface 607 and the pressure surface 601 can be up to It may be closer to the reference point 605A toward the camber point 658.

Suction surface 602 may further include a connecting curved surface 605 connecting first linear surface 606 and 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 it is also possible that the first linear surface 606 and the second linear surface 607 are directly connected to each other, and the connecting curved surface 605 is not included in the suction surface 602. In this case, the reference point 605A may mean a connection point between the first linear surface 606 and the second linear surface 607.

Suction surface 602 may further include a flow curved surface 608. Flow surface 608 may connect second linear surface 607 and trailing edge 604 and may be located at least partially between maximum camber point 658 and trailing edge 604 .

The shape formed by the first linear surface 606 and the second linear surface 607 can be referred to as a drooping shape or a dolphin head shape.

FIG. 20A is a diagram showing the shape of an impeller blade in related technology as a comparative example, FIG. 20B is a diagram showing a blade shape according to an embodiment of the present invention, and FIG. 21 is a diagram showing the shape of an impeller in related technology. 3 is a graph showing changes in noise depending on air volume with an impeller according to an embodiment of the present invention.

Blades 488 according to embodiments of the present invention and related art blades 488' may have the same chord length CL and maximum camber M, and may also have the same maximum camber position ML.

Additionally, the pressure surface 601 of the blade 488 according to embodiments of the present invention may be the same or similar to the pressure surface 601' of the related art blade 488'. Additionally, the flow surface 608 of the blade 488 according to embodiments of the present invention may be the same as the corresponding portion of the suction surface 602' of the related art blade 488'.

However, the shapes of the suction surface 602' of the conventional blade 488' and the suction surface 602 of the blade 488 according to embodiments of the present invention are different from those in which the suction surface 602' of the related art blade 488' is formed into a generally streamlined curved surface. However, the suction surface 602 of the blade 488 according to embodiments of the invention may differ from each other in that it includes a first linear surface 606 and a second linear surface 607.

An impeller having a related art blade 488' configuration and an impeller 485 having blades 488 according to an embodiment of the present invention were operated and their respective noises compared. The experimental impeller has 37 blades and is 270 mm in diameter and 88 mm in height. Additionally, 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 impeller b with blades 488 according to an embodiment of the present invention is lower than the noise of impeller a with blades 488' of the related art. More specifically, when the air volume is 3.2 CMM, the noise is reduced by 1.3 dB, and when the air volume is 5.3 CMM, the noise is reduced by 1.1 dB.

It can be seen that the noise of impeller b having blades 488 according to the embodiment of the present invention is lower than the noise of impeller a having blades 488' of the related art at any air volume. In other words, the blades 488 according to embodiments of the present invention not only have the effect of reducing noise only under certain air volume conditions, but also have the effect of reducing noise for all air volumes.

FIG. 22 is a graph illustrating noise due to air volume of a blade according to a predetermined angle TH according to an embodiment of the present invention.

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

Referring to FIG. 22, in all cases where the predetermined angle TH of the blades 488 according to embodiments of the present invention is 7.5 degrees, 13 degrees, and 23 degrees, compared to impellers with blades 488' of the related art: Noise is reduced.

When the predetermined angle TH is less than 7.5 degrees or greater than 23 degrees, the noise reduction effect is smaller than that of the related art impeller having blades 488', and the noise reduction effect is maximum when the predetermined angle TH is 13 degrees. there were.

More specifically, based on an air volume of 5.3 CMM, 38.1 dB of noise is measured when the predetermined angle TH is 13 degrees, and 38.84 dB noise is measured when the predetermined angle TH is 7.5 degrees. was measured, and when the predetermined angle TH was 23 degrees, a noise of 38.63 dB was measured.

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

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

The predetermined angle TH (see FIG. 19) of the blade, which was tested for noise according to the air volume at a predetermined distance DL, was set to 13 degrees.

Referring to FIG. 23, in all cases where the predetermined distance DL of the blade 488 according to embodiments of the present invention is 0.21 times the chord length CL and 0.27 times the chord length CL, the blade of the related art It can be confirmed that the noise is reduced compared to the impeller having a diameter of 488'.

When the predetermined distance DL is shorter than 0.21 times the chord length CL or longer than 0.27 times the chord length CL, the noise reduction effect is greater than that of the impeller having blades 488' of the related art. It was confirmed that the noise reduction effect is maximum when the predetermined distance DL is 0.21 times the chord length CL.

More specifically, based on an air volume of 5.3CMM, 38.1 dB of noise is measured when the predetermined distance DL is 0.21 times the chord length CL, and when the predetermined distance DL is 0.21 times the chord length CL, 38.93 dB of noise was measured at .27 times.

Therefore, the predetermined distance DL of the blade 488 can be 0.21 to 0.27 times the chord length CL, and preferably 0.21 times the chord length CL.

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

As mentioned above, the housing cover 430 may further include a sensor bracket 440 to which a plurality of sensors 500, 550, 560 (see FIG. 25) are attached. Sensor bracket 440 may be connected to the outer surface of guide plates 432, 433, 434.

The sensor bracket 440 may be mounted in a space within the housing cover 430 where air flow, ie, air intake or exhaust, is difficult.

Specifically, the sensor bracket 440 may be attached to an empty space within the housing cover 430 that does not function as an air exhaust flow path.

Specifically, the sensor bracket 440 may include a bracket body 441 on which a plurality of sensors 500, 550, and 560 are installed, and bracket supports 443 and 445 that support the bracket body 441.

The bracket body 441 may have a substantially hexahedral shape. The bracket body 441 may be located on the sides of the guide plates 432, 433, and 434.

Specifically, the bracket body 441 may be located on the side of the cut-off portion 435 between the third guide 434 and the first guide 432.

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

The support rib 441b can support a plurality of sensors and divide the installation positions of the plurality of sensors. A fastening member is coupled to the sensor fastening portion 441c, and a plurality of sensors can be coupled to the sensor bracket 440 via the coupling member.

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

Bracket supports 443, 445 may support bracket body 441 on housing cover 430. For example, the bracket supports 443, 445 are connected to a first support 443 for connecting the upper portion of the bracket body 441 to the outer surfaces of the guide plates 432, 433, 434 and to the outer surfaces of the guide plates 432, 433, 434. and a second support body 445.

For example, first support 443 is connected to at least one of third guide 434 and extension plate 436, and second support 445 is connected to first guide 432.

Furthermore, a through hole 446 may be formed between the sensor bracket 440 and the guide plates 432, 433, and 434. Wires (electrical wires) electrically connected to a plurality of sensors may be arranged to pass through the through hole 446.

On the other hand, a sensor charging device, which will be described later, may be attached to the rear surface of the sensor bracket 440, specifically, to the rear surface of the first support body 443. For this purpose, a charging device fastening portion 443a for fastening the sensor charging device with a fastening member is provided on the rear surface of the first support body 443.

FIG. 25 is a diagram showing a sensor attached to a housing cover according to an embodiment of the present invention, FIG. 26 is a diagram showing a configuration of a dust sensor according to an embodiment of the present invention, and FIG. 27 is a diagram showing a configuration of a dust sensor according to an embodiment of the present invention. 28 is a front perspective view of a rear panel according to an embodiment of the invention; FIG. 29 is a rear perspective view of a rear panel according to an embodiment of the invention; FIG. 29 is a front perspective view of a rear panel according to an embodiment of the invention; FIG. 6 is a diagram showing a state in which the exhaust grille is removed from the upper surface portion.

Referring to FIGS. 25-29, the humidifying air cleaner 10 further includes a plurality of sensors 500, 550, 560 attached to the housing cover 430. The plurality of sensors 500, 550, and 560 can be understood as a configuration for acquiring environmental information of the indoor space based on foreign substances contained in the indoor air.

The plurality of sensors 500, 550, and 560 may include a dust sensor 500 that detects the amount of dust contained in indoor air. Dust sensor 500 may be attached to the side of housing cover 430.

Specifically, the dust sensor 500 is attached to the sensor installation space 441a provided on the rear surface of the sensor bracket 440, and detects the amount of dust contained in the indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. can do. At this time, the rear panel 107 covers the dust sensor 500 so that the dust sensor 500 is not exposed to the outside.

More specifically, dust sensor 500 includes a body 510 having components that substantially detect the amount of dust in the air.

The main body 510 may include a sensor substrate 511 having a terminal portion 515 and a sensor case 512 coupled to the sensor substrate 511 and having a heater 517 and light transmitting/receiving portions 518 and 519 therein.

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

Sensor board 511 has a space in which terminal portion 515 and sensor case 512 are attached. The sensor substrate 511 is formed into a substantially rectangular plate shape and can be seated in the sensor installation space 441a.

The sensor case 512 may include an air flow path that can detect the amount of dust, that is, a sensor flow path 512a.

Further, the sensor case 512 further includes a sensor intake port 513 into which air sucked from a sensor coupling portion 520 (described later) flows. The sensor intake port 513 may be arranged under the sensor case 512 and configured to pass through the rear surface of the sensor case 512.

The heater 517 may be placed on one side of the sensor intake port 513. Heater 517 functions to increase the ambient air temperature of sensor intake port 513. When the heater 517 is driven, the temperature of the air around the sensor intake port 513 increases, its density decreases, and the pressure decreases accordingly.

Furthermore, a sensor discharge portion 514 for discharging air may be formed in the sensor flow path 512a. Sensor ejection portion 514 may be configured to pass through the rear surface of sensor case 512. In other words, the sensor exhaust portion 514 is located above the sensor intake portion 513.

Further, the light transmitting portion 518 and the light receiving portion 519 may be placed on opposite sides of the sensor flow path 512a. The light transmitting portion 518 and the light receiving portion 519 are arranged on one side of the sensor flow path 512a and include the light transmitting portion 518 that emits light. For example, light transmitting portion 518 may include a light emitting diode (LED).

Furthermore, the light transmitting/receiving parts 518 and 519 are arranged on the opposite side of the sensor flow path 512a, and when the light E1 emitted from the light transmitting part 518 acts on the air P1 flowing through the sensor flow path 512a, the light E1 contained in the air is A light receiving portion 519 is included for measuring the sensitivity of light E2 scattered by dust. For example, optical receiving portion 519 may include a photodiode detector. The greater the amount of dust contained in the air, the lower the sensitivity of light received by the light receiving portion 519, and the higher the output voltage value. In other words, light sensitivity and output voltage value may be inversely proportional.

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

Further, the dust sensor 500 further includes a sensor coupling portion 520 coupled to the sensor body 510. The sensor coupling portion 520 may function as a flow path for guiding external indoor air to the sensor intake port 513.

In this embodiment, sensor coupling portion 520 is attached to the inner surface of rear panel 107. When the rear panel 107 is coupled to the rear side of the housing cover 430, the sensor coupling portion 520 may be coupled or connected to the sensor body 510. At this time, the through hole 521 of the sensor coupling portion 520 can communicate with the sensor intake port 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 portion 520. Therefore, the indoor air introduced from the rear of the through hole 521 can be guided to the sensor intake portion 513 after passing through the through hole 521. The through hole 521 can be understood as a sensor access hole for accessing the sensor body 510.

Furthermore, the rear portion of the through hole 521 may be covered by a sensor cover 530. To this end, a hook coupling part (not shown) may be formed on the rear surface of the sensor coupling part 520, and the sensor cover 530 can be attached to and detached from the hook coupling part (not shown). The hook coupling portion includes a coupling groove. Therefore, the hook (not shown) of the sensor cover 530 can be hooked into the coupling groove of the hook coupling portion.

Further, the dust sensor 500 further includes a sensor cover 530 coupled to a rear portion of the sensor coupling portion 520. The sensor cover 530 includes a grill portion 531 that sucks air into the dust sensor 500 and exhausts the air inside the dust sensor 500 to the outside.

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

As a result, the indoor air sucked into the grill portion 531 passes through the through hole 521 of the sensor coupling portion 520 and is then sucked into the sensor intake port 513 of the sensor case 512. The air discharged to the sensor discharge part 514 of the sensor case 512 can pass through the through hole 521 of the sensor coupling part 520 and can be discharged to the outside through the grill part 531.

Further, the sensor cover 530 further includes a hook (not shown) coupled to a hook coupling part formed on the sensor coupling part 520. The hook may include an engagement portion (not shown) inserted into the hook coupling portion and a grip portion (not shown) that can be grasped by a user. For example, the grip portion may extend upwardly from the engagement portion.

According to this configuration, when the user separates the sensor cover 530 from the sensor coupling portion 520, the cleaning hole 516 can be exposed to the outside through the through hole 521. A user can access the sensor body 510 through the through hole 521 and the cleaning hole 516 to clean the dust sensor 500.

In other words, the user can access the cleaning hole 516 by separating only the sensor cover 530 without separating the sensor coupling part 520 or the rear panel 107, so that the user can access the cleaning hole 516 inside the sensor body 510. You can easily clean the dust etc. that has accumulated on the surface.

Further, the plurality of sensors 500, 550, 560 may further include a gas sensor 550 that detects the concentration of pollutants contained in indoor air. Gas sensor 550 is attached to the side surface of housing cover 430. For example, gas sensor 550 may be placed on the side of dust sensor 500.

Specifically, the gas sensor 550 is installed in a sensor installation space 441a provided on the rear surface of the sensor bracket 440, and measures the concentration of pollutants contained in indoor air through the 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 gas sensor 550 so that the gas sensor 550 is not exposed to the outside.

Gas sensor 550 may include a sensor portion 551 for detecting the concentration of pollutants in the air, and a sensor substrate 552 to which sensor portion 551 is attached.

Sensor substrate 552 provides a space in which sensor portion 551 is attached. The sensor substrate 552 is formed into a substantially rectangular plate shape and can be seated in the sensor installation space 441a.

Furthermore, the plurality of sensors 500, 550, and 560 may further include a humidity sensor 560 that detects the humidity of indoor air. Humidity sensor 560 is attached to the side of housing cover 430. For example, humidity sensor 560 may be placed below gas sensor 550.

The humidity sensor 560 is installed in a sensor installation space 441a provided on the rear surface of the sensor bracket 440, and can detect the humidity of indoor air through the rear panel 107 coupled to the rear side of the housing cover 430. At this time, the rear panel 107 covers the humidity sensor 560 so that the humidity sensor 560 is not exposed to the outside.

Humidity sensor 560 includes a sensor portion 561 for detecting moisture in the air, and a sensor substrate 562 to which sensor portion 561 is attached.

Sensor substrate 562 provides a space in which sensor portion 561 is attached. The sensor substrate 562 is formed into a substantially rectangular plate shape and can be seated in the sensor installation space 441a.

As described above, the dust sensor 500, the gas sensor 550, and the humidity sensor 560 are closely arranged in a space in the housing cover 430 where air does not flow well, that is, on the outer surface of the housing cover. Therefore, it is possible to secure an installation space for installing a plurality of sensors, and the plurality of sensors can be arranged in a concentrated manner in one place, so that the sensors can be easily managed.

Furthermore, the through hole 446 is arranged between the sensor bracket 440 on which the sensors 500, 550, 560 are installed and the guide plates 432, 433, 434.

In other words, since the multiple sensors are separated from the second exhaust flow path 430b (see FIG. 14) by the through hole 446, the air flow in the second exhaust flow path 430b affects the multiple sensors. It is possible to prevent this from happening. Therefore, the detection sensitivity of the plurality of sensors can be improved.

Furthermore, since the plurality of sensors 500, 550, and 560 are covered by the rear panel 107 and are not exposed to the outside, the appearance of the product can be kept clean. When the rear panel 107 is separated, multiple sensors 500, 550, and 560 may be exposed to the outside, so if some of the sensors 500, 550, and 560 fail, the failed sensor cannot be replaced or repaired. Since only the rear panel 107 can be separated for the purpose of cleaning, maintenance and management of the sensor can be simplified.

Meanwhile, the humidifying air cleaner 10 further includes a sensor charging device 800 attached to the housing cover 430. Sensor charging device 800 can be understood as a device for powering at least one or all of dust sensor 500, gas sensor 550, and humidity sensor 560.

In particular, the sensor charging device 800 includes a charging device case 810 having multiple components for charging, namely a charging module embedded therein.

The charging device case 810 has a substantially hexahedral shape and is attached to the rear surface of the sensor bracket 440. Specifically, charging device case 810 is attached to the rear surface of first support body 443 that supports sensor bracket 440.

At this time, the charging device case 810 may protrude further to the rear of the housing cover 430 than the plurality of sensors 500 , 550 , and 560 attached to the sensor bracket 440 .

In other words, the surface on which the charging device case 810 is attached may protrude further rearward than the surface on which the plurality of sensors 500, 550, and 560 are attached. The charging device case 810 may be exposed to the outside through the rear panel 107.

Furthermore, the charging device case 810 further includes a plug insertion port 812 into which an external charging plug is inserted. Plug insertion port 812 can be understood as the part where a plug connected to an external power supply part (not shown) is electrically connected to charging device case 810.

For example, the plug insertion port 812 may be formed on a top portion of the charging device case 810. In other words, the plug insertion port 812 may be formed to be recessed downward from the upper surface portion of the charging device case 810.

Furthermore, the charging device case 810 may further include a connecting portion 814 for securing the charging device case 810 to the sensor bracket 440. For example, connection portions 814 may extend from each side of charging device case 810. The connecting portion 814 may be fastened to a charging device fastening portion 443a (see FIG. 24) provided on the first support body 443 by a fastening member.

Furthermore, sensor charging device 800 further includes a charging device cover 820 coupled to 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 charger cover 820 may be placed in the region of the rear panel 107 where the charger case 810 is exposed. In other words, the charging device cover 820 may be attached so as to shield the opening portion 107a formed in the rear panel 107 from the rear surface of the rear panel 107. At this time, the charging device cover 820 may be attached to the rear surface of the rear panel 107 so that the charging device cover 820 can be attached and removed.

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

Furthermore, the charging device cover 820 is formed with a plug through hole 821 through which an external charging plug passes. The plug through hole 821 can be understood as a portion for electrically connecting the charging plug to the charging device case 810 located within the charging device cover 820.

For example, the plug through hole 821 may be provided in the upper surface portion of the charging device cover 820. The plug through hole 821 may be formed in the upper surface portion of the charging device cover 820 by cutting a portion of the charging device cover. The plug insertion port 812 of the charging device case 810 may be exposed through the plug through hole 821. In other words, the plug through hole 821 and the plug insertion port 812 can be arranged so as to face each other and communicate with each other.

Therefore, a user can supply power to sensor charging device 800 by inserting a plug into plug insertion port 812 through plug through hole 821 . Sensor charging device 800 can then supply power supplied via the plug to at least one or all of dust sensor 500, gas sensor 550, and humidity sensor 560.

Further, the plug through hole 821 may be provided with a foreign object prevention portion (not shown) for preventing foreign objects such as dust and moisture from entering the plug through hole 821. For example, the foreign object prevention portion may be formed of an elastic material such as rubber, and may be provided inside the plug through hole 821. The foreign object prevention portion 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 via the charging device cover 820. Therefore, charging of a plurality of sensors can be performed easily and easily.

Meanwhile, the rear panel 107 can cover the rear side of the housing cover 430. In other words, the rear panel 107 may be located at the rearmost side of the humidifying air cleaner 10.

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

The plate portion may have a rectangular plate shape. A plate portion may be coupled to the rear side of housing cover 430 to cover multiple sensors 500, 550, 560, sensor charging device 800, or the like.

The plate portion may be provided with an opening portion 107a through which the sensor charging device 800 passes. Opening portion 107a may be formed in a shape corresponding to the shape of 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 portion 107a.

Furthermore, the exposed sensor charging device 800 may be shielded by a charging device cover 820.

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

The rear panel 107 includes an insertion portion 107c that protrudes forward so as to be inserted into the main body frame 110, a support rib 107d for fixing or supporting the insertion portion 107c, and a service groove 107e formed as a groove in the lower end portion. and are further provided.

The insertion portions 107c may be provided on both sides of the lower end of the rear panel 107, respectively. The insertion portion 107c may protrude forward and be inserted into the lower end of the main body frame 110. Accordingly, the rear panel 107 can be coupled to the rear of the body frame 110.

Support ribs 107d may extend forwardly from rear panel 107 to securely support insert portion 107c.

Further, support rib 107d may function as a coupling bracket coupled to housing cover 430. In this case, coupling brackets may be provided on the upper and lower parts of the plate part.

The service groove 107e may be recessed upward from the lower end portion of the rear panel 107 to facilitate movement of the humidifying air cleaner 10.

Further, the rear panel 107 is provided with a discharge portion 109 from which filtered and humidified air is discharged, and a non-discharge portion 109A located on the side of the discharge portion 109 from which air is not discharged.

Specifically, the upper portion of the rear panel 107 may be bent into a ┐ shape. Additionally, the upper portion of rear panel 107 may extend forwardly. In other words, the upper surface of the rear panel 107 may be formed.

Opening portions 109 and 109A may be formed in the upper surface of the rear panel 107 to extend vertically through the opening portions 109 and 109A.

The opening portions 109, 109A may include a drain portion 109 and a non-drain portion 109A.

The drain portion 109 can face vertically with the second drain channel 430b of the housing cover 430 (see FIG. 16), and the non-drain portion 109A can face vertically with the extension plate 436.

The vertical space between the second guide 433 and the third guide 434 of the opening section 109, 109A may be formed as the evacuation section 109. In other words, the portion of the opening portions 109, 109A facing the second discharge flow path 430b can be the discharge portion 109, and the portion facing the extension plate 436 can form the non-discharge portion 109A.

The area of the discharge portion 109 may be larger than the area of the non-discharge portion 109A.

The discharge portion 109 may be formed such that the second discharge flow path 430b and the discharge port communicate with each other.

The exhaust portion 109 can guide air that passes through the housing assembly 400 and is exhausted to the outside.

In other words, when the rear panel 107 is coupled to the rear side of the housing cover 430, the ejection portion 109 can be located at the upper end of the housing cover 430. In other words, the discharge portion 109 is located above the second discharge channel 430b.

The rear panel 107 may further include an exhaust grille 170 that guides the exhaust direction of air passing through the exhaust portion 109.

The exhaust grille 170 may cover the opening portions 109, 109A from above. In other words, the exhaust grille 170 may cover the open end portion 431a of the housing cover 430 and the extension plate 436.

In particular, a portion of the exhaust grille 170 may cover the exhaust portion 109, and another portion may cover the non-exhaust portion 109A. In other words, a portion of the exhaust grille 170 may face the second exhaust channel 430b in a vertical direction, and another portion may face the extension plate 436 in a vertical direction.

The rear panel 107 may further include a grill installation groove 107f in which the exhaust grill 170 is installed. The grill installation groove 107f may be formed to be depressed downward from the upper surface of the rear panel 107. The exhaust grill 170 may be seated in the grill installation groove 107f.

The grill installation groove 107f may be recessed downward so that the upper end of the grill guide 175 is located at the same height as the upper end of the upper panel 105. In other words, the upper end of the exhaust grill 170 installed in the grill installation groove 107f may form a horizontal plane with the upper end of the upper panel 105.

The grill installation groove 107f may be defined as a groove formed along the opening on the top surface of the rear panel 107.

The grill installation groove 107f may form a step with the upper surface of the rear panel 107. The grill installation groove 107f may be located at the edge of the opening portions 109, 109A. For example, the exhaust grill 170 may be seated in the grill installation groove 107f.

FIG. 30 is an enlarged view of a portion of the rear panel according to one embodiment of the invention.

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

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

The grill guides 175 may be arranged in the internal space formed by the outer frame such that the plurality of grill guides 175 are spaced apart from each other at predetermined intervals. For example, the grill guides 175 may be spaced apart from each other along the front-rear direction.

Therefore, the discharge portion 109 and the outside can communicate through the plurality of grill guides 175. As a result, the air discharged to the discharge portion 109 may flow between the plurality of grill guides 175 and be discharged along the extending direction of the grill guides 175.

In other words, the grill guide 175 can guide the flow direction of the exhausted air.

The grill guide 175 may extend upward from the upper surface of the rear panel 107 by a predetermined angle θA. In other words, the grill guide 175 may be formed to be inclined forward.

In other words, the grill guide 175 can maintain a constant angle with respect to the imaginary vertical line.

A grill guide 175 may extend upwardly from the outer frame. Further, the grill guide 175 may extend forwardly toward the upper end.

Specifically, the grill guide 175 has an extension reference line DH that is a virtual vertical line parallel to the vertical reference line D (see FIG. 14), and an extension start point OH located at the side end portion of the grill installation groove 107f. may be defined.

The extension reference line DH and the extension start point OH may be located so as to intersect at the lower end of the grill guide 175.

In other words, the grill guide 175 can extend so as to be inclined upward by a predetermined angle θA toward the front of the grill guide 175 with respect to the extension reference line DH and the extension start point OH.

Here, the horizontal line drawn along the side edge portion of the grill installation groove 107f may be parallel to the ground.

In other words, the grill guide 175 may extend upwardly toward the top panel 105.

In other words, the exhaust grille 170 may extend such that the upper end of the exhaust grille 170 is inclined toward the door assembly 200 so that the air passing through the exhaust portion 109 is directed forward.

Therefore, when the humidifying air cleaner 10 is arranged so that the rear panel 107 is in close contact with the indoor wall surface, the discharged air that has passed through the discharge portion 109 can be discharged in the direction of the room opposite to the direction of the wall surface.

FIGS. 31A and 31B are graphs illustrating experiments comparing exhaust airflow due to grille guide tilt of an exhaust grill, according to one embodiment of the present invention.

In particular, FIG. 31A is an experimental graph showing the flow distribution of exhaust air passing through the exhaust portion 109 when the grill guide 175 extends vertically along the extension reference line DH. FIG. 31B is an experimental graph showing the flow distribution of exhaust air passing through the exhaust portion 109 when the grill guide 175 is extended by being inclined by a predetermined angle θA from the extension reference line DH.

The humidifying air purifier according to this embodiment is a home humidifying air purifier for use with furniture such as bookshelves and tables, so it can be placed near the wall like furniture generally placed in indoor spaces. Can be done.

Referring to FIG. 31A, the air discharged from the discharge portion 109 of the humidifying air cleaner 10, which is arranged so that the rear panel 107 faces the wall surface W, forms an air flow that broadly contacts the wall surface W directly. can be confirmed.

Referring to FIG. 31B, the air discharged from the discharge portion 109 by the forward-slanted grill guide 175 is discharged into the indoor space on the opposite side of the wall W, thereby minimizing the air flow that directly contacts the wall W. You can see what you can do.

In other words, the flow of air discharged from the humidifying air cleaner 10 can be guided away from the indoor wall surface by the discharge grille 170 that extends forward and tilts.

Therefore, it is advantageous to prevent discoloration, damage, mold, etc. that may occur due to moisture-containing exhaust air coming into contact with the wallpaper. In other words, it is possible to prevent wallpaper from being contaminated, thereby keeping the indoor environment clean.

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

With reference to FIG. 32, the flow of air within the humidifying air cleaner 10 according to the embodiment of the present invention will be described.

First, when the blower fan 480 is driven, air outside the humidifying air cleaner 10 can be sucked into the air intake port 225 through the recessed portion 30 . Air sucked in through the intake port 225 flows upward and into the drawer 220.

Additionally, air passes through air filter assembly 280. Since the air filter assembly 280 is tilted forward while seated on the air filter pedestal portion 226, the air filter assembly 280 can uniformly pass through the filter surface of the air filter assembly 280.

Air filtered by air filter assembly 280 may flow rearward and pass through humidification filter assembly 300. The air is humidified while passing through humidification filter assembly 300 and the humidified air may pass through blower fan 480.

Accordingly, the air filter assembly 280, the water tank 260, and the humidifying filter assembly 300 are sequentially arranged rearward from the front portion of the drawer 220, so that the air can be easily filtered and humidified.

Air may be drawn in axially through the blower fan 480 and exhausted radially. The air that has passed through the blower fan 480 may flow upward and be exhausted to the outside through the exhaust portion 109.

In other words, air is sucked into the front lower part of the humidifying air cleaner 10 and discharged to the rear upper part, so that flow resistance is reduced and air blowing performance can be improved.

Referring to the internal flow path of air passing through the housing assembly 400, it may flow in the axial direction of the blower fan 480 to form an internal flow path that is exhausted upwardly toward the exhaust portion 109.

The internal flow path will be described in detail below. Air introduced from the direction of the rotation axis of the blower fan 480 is discharged in the radial direction of the blower fan 480 and flows toward the discharge portion 109 along a scroll-shaped flow path by the guides of the fan housing 410 and the housing cover 430. be able to.

FIG. 33 is a schematic diagram illustrating a portion of a humidifying air cleaner according to an embodiment of the present invention, and FIG. 34 is a schematic diagram illustrating air flow within the humidifying air cleaner according to an embodiment of the present invention. .

Referring to FIGS. 33 and 34, the humidifying air cleaner 10 according to the embodiment of the present invention is characterized in that an air filter 285, a humidifying filter 330, and a blower fan 480 are arranged in a line and spaced apart from each other. .

Specifically, the air filter 285 is arranged at the front part of the humidifying air cleaner 10, and the blower fan 480 is arranged at the rear part of the humidifying air cleaner 10. Humidifying filter 330 is arranged in a space between air filter 285 and blower fan 480.

In the present invention, the humidifying filter 330 is disposed in the space between the air filter 285 and the blower fan 480 in order to promote humidification of the air.

In other words, the humidifying filter 330 is disposed downstream of the air filter 285 and upstream of the blower fan 480, so that the air that has passed through the air filter 285 is transferred to the outside by the blower fan 480 in a moisture-containing state. can be quickly discharged.

Unlike the present invention, when the humidifying filter 330 is located downstream of the blower fan 480, the flow rate of the air that has continuously passed through the air filter 285 and the blower fan 480 is relatively low after passing through the humidifying filter 330. It can be late. The slower the flow rate, the more time it takes for the air to be exhausted to the outside, which can result in more time for moisture in the air to evaporate.

Furthermore, the air filter 285 may be arranged so as to face the humidifying filter 330, and the humidifying filter 330 may be arranged so as to face the ventilation fan 480. At this time, the interval L1 between the air filter 285 and the humidifying filter 330 may be larger than the interval L2 between the humidifying filter 330 and the ventilation fan 480.

The distance L1 between the air filter 285 and the humidifying filter 330 may mean the distance between arbitrary points between the air filter 285 and the humidifying filter 330 in the front-rear direction. Further, the distance L2 between the humidifying filter 330 and the blower fan 480 may mean the distance between arbitrary points between the humidifying filter 330 and the blower fan 480 in the front-rear direction.

In other words, by arranging the humidifying filter 330 closer to the blower fan 480 than the air filter 285, air containing moisture is quickly exhausted to the outside by the blower fan 480.

Further, the air filter 285, the humidifying filter 330, and the blower fan 480 can be arranged in this order along the axial direction of the fan motor 483 (see FIG. 32) of the blower fan 480.

In particular, air filter 285, humidification filter 330, and blower fan 480 are substantially understood as configurations through which indoor air essentially passes for filtering and humidification. Therefore, by arranging the air filter 285, humidifying filter 330, and blower fan 480 in a line, the air flow direction can be made straight.

In other words, the air sucked into the humidifying air cleaner 10 can go straight and quickly pass through the air filter 285, humidifying filter 330, and blower fan 480. Therefore, the air sucked into the humidifying air cleaner 10 can pass through the air filter 285, the humidifying filter 330, and the blower fan 480 in order while flowing backward, so that the air filtering and humidifying effects can be improved. can.

On the other hand, the height H1 from the door lower surface portion 224 to the upper end of the air filter 285 can be formed to be higher than the height H2 from the door lower surface portion 224 to the upper end of the humidifying filter 330. In other words, by increasing the overall height of air filter 285, air filtration performance can be improved.

On the other hand, even if the total height of the humidifying filter 330 is lower than the height of the air filter 285, the humidifying filter 330 exhibits sufficient humidifying performance, so the height of the humidifying filter 330 can be configured to be lower than the air filter 285.

Furthermore, by forming the height H3 from the door lower surface portion 224 to the upper end portion of the blower fan 480 to be lower than the height H2 of the humidifying filter 330, the air that has passed through the humidifying filter 330 is directed outside as quickly as possible. It is discharged.

Further, the height T1 from the door lower surface portion 224 to the lower end portion of the air filter 285 can be formed to be higher than the height T2 from the door lower surface portion 224 to the lower end portion of the humidifying filter 330. This is because the humidifying filter 330 must be sufficiently immersed in the water stored in the water tank 260.

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

On the other hand, from the viewpoint of the air flow path, an intake flow path S1 can be formed on the intake side of the air filter 285, and a first intermediate flow path S2 can be formed between the air filter 285 and the humidifying filter 330. A second intermediate flow path S3 can be formed between the humidifying filter 330 and the blower fan 480, and a discharge flow path S4 can be formed in the housing cover 430 corresponding to the discharge side of the blower fan 480. .

The intake channel S1 is understood as the intake channel of the air filter 285 and can extend in the vertical direction. The widths of the intake flow paths S1 in the front-rear direction may be formed to be different from each other in the vertical direction. For example, the lower width of the intake flow path S1 may be formed to be larger than the upper width of the intake flow path S1. This difference in channel width may be due to the configuration in which the upper portion of the air filter 285 is arranged so as to be inclined forward.

The first intermediate flow path S2 may be formed above the water container 270. The first intermediate flow path S2 can be understood as an intake flow path of the humidifying 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 longer than the length of the intake flow path S1 in the front-rear direction.

The second intermediate flow path S3 is understood as an intake flow path of the blower fan 480, and may extend in the front-rear direction. The air flowing through the second intermediate flow path S3 may flow in the axial direction of the blower fan 480. The length of the second intermediate flow path S3 in the front-rear direction may be formed to be shorter than the length of the first intermediate flow path S2 in the front-rear direction.

The exhaust flow path S4 can be understood as the exhaust flow path of the blower fan 480. The exhaust flow path S4 may be formed in a space where the blower fan 480 is installed, that is, a space formed by the fan housing 410 and the housing cover 430. The air that has flowed through the discharge channel S4 can be discharged upwardly through the discharge portion 109. The discharge channel S4 may include the first discharge channel 430a (see FIG. 14) and the second discharge channel 430b (see FIG. 14) described above.

Accordingly, the air filter assembly 280, the water tank 260, and the humidifying filter assembly 300 are sequentially arranged rearward from the front portion of the drawer 220, so that the air can be easily filtered and humidified.

FIG. 35 is a front view of a housing cover according to another embodiment of the present invention, FIG. 36 is an enlarged view of a cutoff of the housing cover shown in FIG. 35, and FIG. FIG. 37B is a perspective view of a housing cover according to another embodiment of the present invention, and FIG. 38A is a diagram schematically showing cut-off of a housing cover in related art as a comparative example. and FIG. 38B is a schematic illustration of a housing cover cutoff according to another embodiment of the invention.

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

Other embodiments to be described below are the same as the above embodiments except for the configuration of the housing cover, so overlapping content will be omitted and differences will be mainly explained.

The first guide 432 may be formed away from the blower fan 480 in the direction of air flow from the cutoff portion 435 . Specifically, the first guide 432 may have a scroll shape that gradually separates from the outer periphery of the impeller 485 in the circumferential direction.

The first guide 432 may be formed between the reference angle point (k=0° or 360°) and the cutoff portion 435 centered on the reference point O. Here, the reference angle point (k=0° or 360°) may refer to the point where the first guide 432 and the second guide 433 intersect.

Cutoff portion 435 may be positioned at approximately 90° to the direction of rotation (eg, clockwise) of impeller 485. The rotation center of the impeller 485 may be arranged to overlap the cutoff portion 435 when viewed from the direction of k=90°.

The first guide 432 is rounded in the direction perpendicular to the rotation center axis of the impeller 485 over the entirety or a part thereof from the cutoff portion 435 to the reference angle point (k = 0° or 360°). may be formed.

The closer the cutoff portion 435 is to the reference angle point (k=0° or 360°) along the rotational direction of the impeller 485, the smaller the curvature of the first guide 432 becomes, and the larger the radius of curvature becomes.

A first discharge flow path 430a may be formed between the inner surface of the first guide 432 and the outer surface of the impeller 485, through which air discharged in the radial direction by the impeller 485 flows.

The flow cross-sectional area of the first discharge flow path 430a may gradually increase along the direction of rotation of the impeller 485. In other words, the distance between the inner surface of the first guide 432 and the outer surface of the impeller 485 can be gradually increased along the direction of rotation of the impeller 485.

Here, the outer surface of the impeller 485 can be understood as the circumferential surface located at the furthest distance from the center of the impeller 485 in the radial direction. Therefore, the outer surface of impeller 485 may be referred to as the outer periphery of blower fan 480 or the outer end portion of blower fan 480 .

The distance between the inner surface of first guide 432 and the outer surface of impeller 485 is sometimes referred to as the inner width of the discharge channel.

The internal width cf1 of the discharge channel between the cutoff portion 435 and the point k = 180° is narrower than the internal width cf2 of the discharge channel between the point k = 180° and the point k = 270°. It can be formed as follows.

A third guide 434 may extend from a cutoff portion 435 provided on one side of the first guide 432 and a second guide 433 may extend from the other side of the first guide 432. can exist.

In particular, third guide 434 and second guide 433 may extend away from impeller 485, for example substantially upwardly.

A second discharge passage 430b may be formed between the third guide 434 and the second guide 433, and the second discharge passage 430b is connected to the first discharge passage 430a.

The third guide 434 and the second guide 433 may be configured to move away from each other along the air flow direction. Therefore, the flow cross-sectional area of the second discharge flow path 430b may gradually increase in the air flow direction.

The cutoff portion 435 may be located between the first guide 432 and the third guide 434, and may be formed to protrude toward the second discharge channel 430b.

Cutoff portion 435 may be spaced apart from the outer surface of impeller 485 to create a gap.

On the other hand, if the gap is too large, there is a possibility that part of the air flowing from the first exhaust flow path 430a to the exhaust flow path 433b will be sucked into the gap again. Reuptake is defined as a reflux phenomenon. If backflow occurs, the performance of the blower fan 480 may deteriorate.

Conversely, if the gap is too small, flow pressure may be concentrated at the end portion of the cutoff portion 435. Therefore, flow noise can be relatively large. Therefore, the gap needs to be adjusted appropriately.

For example, the minimum distance g between the cutoff portion 435 and the outer surface of the impeller 485 is preferably 8% or more and 10% or less of the diameter G of the impeller 485.

In other words, the minimum distance g between the first connection portion 702 and the outer periphery of the impeller 485 described below is preferably 8% or more and 10% or less of the diameter G of the impeller 485. The minimum distance g between the outer circumference of the first connecting portion 702 and the impeller 485 is sometimes referred to as a cutoff gap.

Meanwhile, referring to FIGS. 37A and 38A, the cutoff portion 435' of the conventional housing cover may be formed to be rounded in the longitudinal direction (hereinafter referred to as the first direction), or may not be formed rounded. It may be formed to be flat in the width direction (hereinafter referred to as the second direction).

In other words, the conventional cutoff portion 435' has a predetermined curvature in the first direction, but the curvature is zero in the second direction.

Here, the first direction may mean a direction in which the first guide 432 and the third guide 434 are coupled to each other. The second direction may be defined as the direction connecting the front end and the rear end of the cutoff portion 435.

Meanwhile, referring to FIGS. 37B and 38B, the cutoff portion 435 of the housing cover 430 according to the embodiment of the present invention is not only rounded with respect to the first direction, but also has at least a portion of the cutoff portion 435. may be formed to be rounded in the second direction.

This makes it possible to reduce the noise that occurs when a portion of the air flowing from the first exhaust flow path 430a to the second exhaust flow path 430b collides with the end portion of the cutoff portion 435.

The configuration of cutoff portion 435 will be explained in more detail.

Cutoff portion 435 includes a first connecting portion 702 connecting contour 701 to first guide 432 and a second connecting portion 703 connecting contour 701 to third guide 434 .

The contour 701 may mean the contour of the end portion of the cut-off portion 435, more specifically the portion of the cut-off portion 435 that protrudes most in the direction of the discharge channel 433b.

At least a portion of the contour 701 of the cutoff portion 435 may be at least partially rounded in the second direction.

Referring to FIG. 38A, the cutoff profile 701' of the related art housing cover has a linear shape with respect to the second direction. Meanwhile, referring to FIG. 38B, a contour 701 of the cut-off portion 435 of the housing cover 430 according to an embodiment of the present invention is formed such that at least a portion of the contour 701 has a predetermined curvature with respect to the second direction. It's okay.

The flow rate of air hitting contour 701 of cutoff portion 435 may vary depending on the position in the second direction. In other words, the contour of the cutoff portion 435 may have a different flow distribution at different locations. For example, the air flow rate at a point adjacent the cover plate 431 may be slower than the air flow rate at a point adjacent the fan housing 410 (see FIG. 12).

The contour 701 of the cut-off portion 435 of the housing cover 430 according to the present embodiment may be formed to correspond to the above-described positional flow distribution.

In particular, the profile 701 of the cutoff portion 435 includes a straight portion 704 that is diagonally connected to the cover plate 431 and a rounded portion 705 that is connected to the fan housing 410 by extending from the straight portion 704. But that's fine.

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

On the other hand, the rounded portion 705 may be formed round so as to have a predetermined curvature in the second direction. The rounded portion 705 may be formed to be convex toward the fan housing 410.

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

The length Y3 of the straight portion 704 in the second direction may be half the distance Y1 between the cover plate 431 and the fan housing 410.

Further, the length Y2 of the rounded portion 705 in the second direction may be half the distance Y1 between the cover plate 431 and the fan housing 410.

At this time, the distance Y1 between the cover plate 431 and the fan housing 410 may mean the length Y1 of the contour 701 in the second direction.

In particular, the point forming the boundary between the straight section 704 and the rounded section 705 can be referred to as the inflection point 506. Further, the distance Y3 between the cover plate 431 and the inflection point 506 in the second direction may be half 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 the distance Y1 between the cover plate 431 and the fan housing 410.

In other words, the distance Y3 between the cover plate 431 and the inflection point 506 with respect to the second direction may be equal to the distance Y2 between the fan housing 410 and the inflection point 506.

On the other hand, the cutoff portion 435 may be formed to be rounded in the first direction. Accordingly, the third guide 434 may extend in the opposite direction from one end portion of the first guide 432.

Cutoff portion 435 may have a maximum curvature at contour 701 with respect to the first direction.

In detail, the curvature of the first connecting portion 702 with respect to the first direction and the curvature of the second connecting portion 703 with respect to the first direction each increase toward the contour 701 and may converge to a maximum curvature. .

Preferably, the maximum curvature is 5% of the diameter G of the impeller 485.

The maximum curvature can be kept constant along contour 701. In other words, the curvature of the straight portion 704 in the first direction and the curvature of the rounded portion 705 in the first direction may be equal to each other.

On the other hand, the first connecting portion 702 and the second connecting portion 703 may each include a three-dimensional curved surface. Here, the three-dimensional curved surface means a curved surface having a predetermined curvature in the first direction and the second direction. Therefore, a three-dimensional curved surface is sometimes called a free-form surface.

In the following, the noise reduction effect due to the structure of the cutoff portion 435 described above will be explained with reference to experimental graphs.

FIG. 39 is a graph showing a change in noise depending on the air volume of a blower fan attached to a housing cover according to a related art and a blower fan attached to a housing cover according to another embodiment of the present invention.

Referring to FIG. 39, it can be confirmed that the noise generated from the blower fan a in the related technology is larger than the noise generated by the blower fan b according to the present embodiment for all airflows.

In particular, in the related technology blower fan a, a noise of 34.3 dB was measured when the air volume was 3.7 CMM, and in the blower fan b according to the present embodiment, a noise of 32.0 dB was measured when the air volume was 3.7 CMM. The measurement confirmed a noise reduction effect of 2.3 dB.

FIG. 40A is a graph showing a change in noise depending on the operating frequency of a blower fan attached to a housing cover in related technology as a comparative example, and FIG. 40B is a graph showing a change in noise depending on the operating frequency of a blower fan attached to a housing cover according to another embodiment of the present invention. It is a graph showing a change in noise depending on the operating frequency of a fan.

Referring to FIGS. 40A and 40B, it can be confirmed that the noise of a specific frequency generated in the related art blower fan is reduced in the blower fan according to the present embodiment.

More specifically, in a conventional blower fan, a first noise peak P1 of 20 dB with a first frequency of 500 Hz to 1000 Hz is measured, and a second noise peak of 0 dB with a second frequency of 1500 Hz to 2000 Hz. Peak P2 was measured.

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

FIG. 41A is a diagram illustrating an outline of a cutoff of a housing cover in related technology as a comparative example, and FIGS. 41B to 41D are diagrams showing cutoffs of a housing cover according to another embodiment of the present invention according to the position of an inflection point. 42 is a diagram showing an outline of cutoff, and FIG. 42 is a graph showing changes in noise depending on air volume of the ventilation fans attached to each housing cover shown in FIGS. 41A to 41D.

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

The profile 701 of the cutoff 435 shown in FIG. 41B may have an inflection point 706 at 20% of its height. In other words, the height (0.2 x Y1) of the straight portion 704 may be 0.2 times the height Y1 of the contour 701, and the height (0.8 x Y1) of the rounded portion 705 is It may be 0.8 times the height Y1 of the contour 701.

The profile 701 of the cutoff 435 shown in FIG. 41C may have an inflection point 706 at 50% of its height. In other words, the height of the straight portion 704 (0.5×Y1) and the height of the rounded portion 705 (0.5×Y1) may each be 0.5 times the height Y1 of the contour 701.

The profile 701 of the cutoff 435 shown in FIG. 41D may have an inflection point 706 at 80% of its height. In other words, the height (0.8 x Y1) of the straight line portion 704 may be 0.8 times the height Y1 of the contour 701, and the height (0.2 x Y1) of the rounded portion 705 is It may be 0.2 times the height Y1 of the contour 701.

Referring to FIG. 42, it can be seen that the blower fans b, c, and d attached to the housing cover 430 according to the present embodiment have less noise than the blower fan a attached to the housing cover of the related art.

Hereinafter, the blower fan attached to the housing cover having the contour 701 shown in FIG. 41B will be referred to as the first blower fan b, and the blower fan attached to the housing cover having the contour 701 shown in FIG. 41C will be referred to as the second blower fan b. The blower fan attached to the housing cover having the contour 701 shown in FIG. 41D is called the third blower fan d.

Based on the case where the air volume is 5.3CMM, the noise of 41.7 dB is measured in the blower fan a installed on the housing cover of the related technology, the noise of 40.9 dB is measured in the first blower fan b, and the noise of the first blower fan b is measured. Noise of 40.4 dB was measured for the second blower fan c, and noise of 41.4 dB was measured for the third blower fan d. In other words, compared to the blower fan a mounted on the housing cover of related art, the first blower fan b is reduced by 0.8 dB, the second blower fan c is reduced by 1.3 dB, and the third blower fan b is reduced by 1.3 dB. d decreased by 0.3 dB.

As a result, the blower fans b, c, and d attached to the housing cover 430 according to the present embodiment have a noise reduction effect compared to the blower fan a of the related technology, and in particular, the inflection point 706 is The noise reduction effect may be best when located at the 50% point of the height of the contour (702).

Although all elements of the embodiments may be combined together or operated in combination, the present disclosure is not limited to such embodiments. In other words, all elements can be selectively combined with each other without departing from the scope of the invention. Furthermore, when an element is described as comprising (or containing or having) several elements, it may comprise (or contain or have) only those elements, or in the absence of specific limitations. It is to be understood that the may include (or include or have) these elements as well as other elements. Unless explicitly defined herein, all terms, including technical or scientific terms, shall be given the meanings that are understood by those of ordinary skill in the art. Commonly used terms, as well as dictionary-defined terms, should be interpreted as meanings used in technical contexts and, unless specifically defined here, are not ideal or overly formal. not be interpreted as meaning.

Although embodiments have been described with reference to several illustrative embodiments, various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Those skilled in the art will understand that this can be done. Accordingly, the preferred embodiments are to be considered in an illustrative sense only and not as a limitation, and the scope of the invention is not limited to the embodiments. Furthermore, the invention is defined by the appended claims rather than by this detailed description, and all differences within the scope are intended to be included in the present disclosure.

10 Humidifying air cleaner 30 Concave portion 100 Cabinet 101 First base 103 Side panel 105 Upper panel 107 Rear panel 107a Opening portion 107b Panel fastening portion 107c Insertion portion 107d Support rib 107e Service groove 107f Grill installation groove 109 Ejection portion 109A Non-emission Part 110 Main frame 112 Space part 116 Lighting bracket 120 Reflection plate 122 Lighting PCB
124 Lighting case 130 Upper fan 170 Exhaust grill 175 Grill guide 200 Door assembly 210 Door panel 220 Drawer 221 Door front part 222 Door side part 223 Door rear part 224 Door bottom part 225 Inlet port 225a Filter guide 225b Filter support 226 Air filter pedestal part 227 Aquarium base portion 228 Through hole 229a First water storage portion 229b Second water storage portion 230 Rail guide 235 Slide rail 236 Rail cover 260 Aquarium 261 Water container support portion 262 Float housing portion 269 Sterilizer 270 Water container 275 Bottom portion 275a Valve Hole 276 Float device 280 Air filter assembly 281 Air filter case 285 Air filter 300 Humidifying filter assembly 310 Humidifying filter case 315 Shaft support 330 Humidifying filter 332 Lifter 335 Center shaft 338 Filter gear 353 Drive motor 355 Drive gear 400 Housing assembly 410 Fan housing 411 Housing plate 413 Mounting rib 413a Fan motor installation space 415 Fan intake port 417 Limiting rib 430 Housing cover 430a First discharge channel 430b Second discharge channel 431 Cover plate 431a Open end portion 432 Guide plate/first guide 432a Rear end portion 432b Front end portion 433 Guide plate/second guide 433a Cut portion 433b Discharge channel 434 Guide plate/third guide 434a Rear end portion 434b Front end portion 435 Cut-off portion 435' Cut-off portion 435a Rear end Contact point 435b Front end contact point 436 Extension plate 436a Stepped rib 438 Coupling bracket 438a Fastening portion 440 Sensor bracket 441 Bracket body 441a Sensor installation space 441b Support rib 441c Sensor fastening portion 443 Bracket support/first support 443a Charging device Fastening portion 445 Bracket support/second support 446 Through hole 450 Electrical unit 451 Electrical plate 453 Electrical components 455 Electrical cover 480 Blow fan 481 Lock portion 482 Motor cover 483 Fan motor 485 Impeller 486 Hub 487 Mounting hole 488 Blade 488' Blade 490 Main plate 492 Fixed part 500 Dust sensor 506 Inflection point 510 Sensor body 511 Sensor board 512 Sensor case 512a Sensor flow path 513 Sensor intake port 514 Sensor discharge part 515 Terminal part 516 Cleaning hole 517 Heater 518 Light transmission part 519 Light reception Part 520 Sensor coupling part 521 Through hole 530 Sensor cover 531 Grill part 550 Gas sensor 551 Sensor part 552 Sensor board 560 Humidity sensor 561 Sensor part 562 Sensor board 601 Positive pressure surface 601' Positive pressure surface 602 Negative pressure surface 602' Negative pressure surface 603 Front edge 604 Rear Edge 605 Connection curved surface 605A Reference point 606 First linear surface 607 Second linear surface 608 Flow curved surface 651 First virtual straight line 652 Second virtual straight line 654 Virtual circle 655 Point 656 Average camber line 657 Virtual line 658 Maximum camber point 701 Contour 701' Contour 702 First connection portion 703 Second connection portion 704 Straight portion 705 Rounded portion 706 Inflection point 800 Sensor charging device 810 Charging device case 812 Plug insertion port 814 Connection portion 820 Charging device cover 821 Plug through hole C Wing chord CL Wing chord length D Vertical reference line DH Extension reference line DL Predetermined distance DM Tangent line DP Tangent line F Air flow direction M Maximum camber ML Maximum camber position O Reference point OH Extension start point S Rotation axis TH Predetermined angle W Wall surface

Claims (20)

A humidifying air purifier,
a cabinet with a front opening;
The cabinet includes a pair of side panels, and an upper panel and a rear panel that interconnect the pair of side panels, respectively.
a door assembly comprising a door front surface for opening and shielding the front opening of the cabinet; and a door lower surface extending in a downward direction from the door front surface;
the door assembly is slidably pulled out from the cabinet or slidably retracted into the cabinet;
an air intake port formed in the front part of the lower surface of the door based on the direction in which the door assembly is pulled out, allowing air to flow into the inner part of the cabinet through the air intake port;
an air filter and a humidifying filter extending in a direction intersecting the direction in which the door assembly is pulled out;
The air filter and the humidifying filter are attached to the door assembly and are located behind the air intake port,
an exhaust portion located on the rear side of the upper panel and from which air is exhausted; and an exhaust grille comprising a plurality of grill guides that are inclined in the direction in which the door assembly is pulled out and extend in an upward direction. ;
The exhaust grill covers the upper side of the exhaust portion of the humidifying air cleaner. The humidifying air cleaner according to claim 1, wherein the plurality of grill guides are spaced apart from each other in the front-rear direction. the rear panel has a forwardly extending top surface;
The humidifying air cleaner of claim 1, wherein the exhaust portion comprises a vertical opening in the top surface of the rear panel. The upper surface of the rear panel is provided with a grill installation groove;
The humidifying air cleaner according to claim 1, wherein the exhaust grill is seated in the grill installation groove such that the upper end of the plurality of grill guides is located at the same height as the upper end of the upper panel. A blower fan,
The humidifying air cleaner according to claim 1, further comprising a housing cover provided inside the cabinet and having an outer surface surrounding the blower fan. The outer surface of the housing cover is
a guide plate extending from the housing cover and guiding air radially upward as it passes through the blower fan;
The humidifying air cleaner according to claim 5, further comprising an extension plate extending laterally from an end portion of the guide plate along an upper end of the housing cover. 7. The humidifying air cleaner of claim 6, wherein the extension plate comprises stepped ribs configured to support the exhaust grille. The blower fan includes an impeller for sucking in and discharging air,
The blades of the impeller are
a maximum camber point defined as the point on the suction side of the blade that corresponds to the point with maximum camber on the average camber line;
a reference point defined as another point on the suction side of the blade at which the distance between the suction side and the pressure side is maximum;
6. A humidifying air cleaner according to claim 5, wherein the suction surface of the blade comprises a linear surface formed as a flat surface located between the point of maximum camber and the leading edge of the blade. The humidifying air cleaner according to claim 5, wherein the housing cover further comprises a sensor bracket to which at least one sensor device is attached. The humidifying air cleaner according to claim 9, wherein the sensor bracket is arranged in a concave space formed by the outer surface of the housing cover. an opening defined in an upper portion of the cabinet and located on the rear side of the upper panel;
further comprising: a scroll housing disposed below the opening; and a blower fan attached to the inside of the scroll housing;
The scroll housing includes:
a first guide having a round shape and surrounding a part of the outer surface of the blower fan;
a second guide disposed close to one of the pair of side panels and extending upward at one end portion of the first guide;
a third guide disposed close to the other side panel of the pair of side panels and extending upward from the other end portion of the first guide;
The distance between the upper end of the third guide and the other side panel is longer than the distance between the upper end of the second guide and the one side panel. Humidifying air purifier. 12. The humidifying air cleaner of claim 11, wherein the third guide extends diagonally away from the second guide toward the upper portion of the cabinet. The humidifying air cleaner according to claim 11, wherein the upper end of the third guide is arranged to overlap the first guide in a downward direction. The humidifying air cleaner according to claim 11, wherein the scroll housing further includes an extension plate extending from the upper end of the third guide toward the other side panel. The opening portion is
the discharge part;
a non-ejection portion facing downward on the extension plate;
The humidifying air cleaner according to claim 14, wherein the discharge portion communicates with a space between the second guide and the third guide. a fan housing disposed in the cabinet;
a fan motor coupled to the fan housing;
further comprising: a blower fan coupled to the fan motor; and a housing cover coupled to the rear side of the fan housing and housing the blower fan;
The housing cover is
a cover plate forming a rear surface of the housing cover;
a guide plate extending forward along a side edge of the cover plate and defining an air discharge flow path from the blower fan;
The humidifying air cleaner according to claim 1, wherein the guide plate includes a first guide spaced apart from the blower fan and extending along the rotational direction of the blower fan. The guide plate is
a second guide extending upward from the first guide;
The third guide is disposed on the opposite side of the second guide from the first guide and extends upward from the first guide so as to be inclined with respect to the first guide. The humidifying air cleaner according to claim 16. The guide plate includes a cut-off portion disposed between the first guide and the third guide,
The humidifying air cleaner according to claim 17, wherein the cutoff portion protrudes toward the exhaust flow path. 19. The humidifying air cleaner of claim 18, wherein the inner surface of the cutoff portion is formed as a curved surface having a plurality of recessed surface portions and a protruding surface portion. the cutoff portion is rounded with respect to a first direction defined as the direction interconnecting the first guide and the third guide;
19. At least a portion of the cutoff portion is rounded with respect to a second direction defined as a direction interconnecting a front end and a back end of the cutoff portion. Humidifying air purifier.