KR102622928B1 - Air cleaning apparatus - Google Patents

Abstract

The present invention relates to air purifiers.
The air purifier according to an embodiment of the present invention sucks air from the bottom of the body and discharges it to the top, and the discharge portion is formed to be long in the vertical direction to increase discharge capacity. In addition, the airflow guide device is provided to be movable to open or close the discharge unit, so that the direction of the airflow discharged from the discharge unit can be adjusted.

Description

Air purifier {Air cleaning apparatus}

The present invention relates to air purifiers.

An air purifier is understood as a device that sucks in polluted air, purifies it, and then discharges the purified air. For example, an air purifier may include a blower for introducing external air into the air purifier and a filter for filtering out dust or bacteria in the air.

The performance of an air purifier can be determined by the amount of air discharged from the air purifier, that is, the discharge capacity.

Depending on the user's preference, the user may want to be supplied with purified air directly, may want a lot of air to spread throughout the indoor space by avoiding the user's location, or may want the purified air to be supplied toward a specific space.

In relation to this air purifier, the following prior literature has been disclosed.

1. Publication number (publication date): 10-2019-0015325 (February 13, 2019)

2. Name of invention: Fan

According to the prior literature, there was a problem in that it was difficult to control the direction of the discharge airflow because the discharge port was fixed.

In other words, air can be discharged forward based on the fan, but spreading the air into the indoor space by avoiding the user's location or supplying purified air to a specific space is limited.

Meanwhile, in order to control the air flow discharged from the air purifier, a technology for rotating the discharge device of the air purifier or the entire air purifier is introduced. However, there is a problem in that power consumption increases as the air purifier continuously rotates while operating.

In order to solve the above problems, the purpose of the present invention is to provide an air purifier that can easily adjust the direction of the discharged air flow.

In particular, an embodiment of the present invention aims to provide an air purifier capable of discharging airflow in various directions by providing an airflow guide device movably provided at the discharge portion of the air purifier.

In particular, it can perform a concentrated wind mode in which airflow is concentrated forward and discharged centered on the air purifier, a diffused wind mode in which airflow is diffused and discharged laterally, and a rear wind mode in which airflow is discharged rearward centered on the air purifier. The purpose is to provide an air purifier.

In addition, an embodiment of the present invention includes a motor assembly to move the airflow guide device, and by driving the motor assembly, the airflow guide device moves closer to or away from the discharge portion, thereby controlling the flow of air. The purpose is to provide an air purifier that can control the discharge direction in various ways.

Additionally, an embodiment of the present invention aims to provide an air purifier in which the rack gear of the motor assembly and the airflow guide device can be pin-connected for easy movement of the airflow guide device.

In addition, an embodiment of the present invention includes a vane capable of separating discharged air in two directions, and an airflow guide device disposed on the discharge side of the vane to allow air to flow along the surface of the air purifier. The purpose is to provide a purifier.

In order to solve the above problems, the air purifier according to the embodiment of the present invention sucks air from the lower part of the body and discharges it to the upper part, and the discharge part is formed to be long in the vertical direction to increase the discharge capacity.

In addition, the airflow guide device is provided to be movable to open or close the discharge unit, so that the direction of the airflow discharged from the discharge unit can be adjusted.

In particular, the airflow guide device can increase or decrease the discharge area of the discharge portion by moving in a direction away from or closer to the discharge portion.

In addition, it further includes a motor assembly including a motor that provides power to the airflow guide device, and adjusts the driving speed of the motor assembly to move the airflow guide device away from the discharge unit or move the airflow guide device closer to the discharge unit. By performing movements, the discharge direction of the airflow can be changed in various ways.

Additionally, a plurality of motor assemblies are provided at the upper and lower portions of the airflow guide device to provide driving force, thereby guiding the stable movement of the airflow guide device.

Since the rack gear provided in the motor assembly is connected to the airflow guide device with a pin, the rotational operation of the airflow guide device can be performed even if the driving speeds of the plurality of motors are controlled slightly differently, so that the airflow guide device can move smoothly. Breakdowns can be prevented.

An air purifier according to an embodiment of the present invention includes a body including a filter member and a fan; A discharge device forming a discharge portion through which air passing through the fan is discharged; an airflow guide device provided in the discharge device and moving rearward to open the discharge portion and moving forward to close the discharge portion; a motor provided in the discharge device and providing driving force to the airflow guide device; And it may include a control unit that controls the driving speed of the motor to adjust the distance at which the airflow guide device is separated from the discharge unit.

It may further include a rack connecting the motor and the airflow guide device.

The control unit may control the driving speed of the motor so that the airflow guide device moves rearward and away from the discharge unit or moves forward to approach the discharge unit according to the movement of the rack.

The discharging device includes a discharging body forming a discharging passage extending upward from the body, and the discharging body may have a leaf shape in which the front-to-back length is larger than the left-right width.

The airflow guide device may be configured to have a bent shape so that air discharged backward through the discharge unit can be diverted to the front.

The airflow guide device may have a wedge shape to cover a portion of the outer surface of the discharge device when the discharge portion is closed.

The airflow guide device includes a first guide portion disposed outside a first side of the discharge device; and a second guide portion disposed outside the second side of the discharge device and bent from the first guide portion.

The first and second sides may form opposing sides of the discharge device.

The anteroposterior distance from the anteroposterior center of the discharge device to the airflow guide device when the airflow guide device opens the discharge portion is the airflow from the anteroposterior center of the discharge device when the airflow guide device closes the discharge portion. It can be formed to be larger than the front-to-back distance to the guide device.

The control unit may increase or decrease the driving speed of the motor so that the front-back distance from the front-back center of the discharge device to the airflow guide device can increase or decrease depending on the operation mode.

In the first operation mode, the control unit may control the driving speed of the motor at a first driving speed so that the airflow discharged backward from the discharge unit hits the airflow guide device and is diverted forward to form concentrated wind. there is.

In the second operation mode, the control unit drives the second driving speed of the motor so that a portion of the airflow discharged rearward from the discharge unit hits the airflow guide device and spreads to the side of the discharge device to form a diffused wind. Controlled by speed, the second driving speed may be greater than the first driving speed.

In the third operation mode, the control unit controls the driving speed of the motor to a third driving speed so that the airflow discharged rearward from the discharge unit forms a rear wind without hitting the airflow guide device, and the third driving The speed may be greater than the second driving speed.

It is provided at the discharge part of the discharge device and further includes a vane that distributes air discharged from the discharge part, and the vane may be disposed inside the airflow guide device.

The vane includes a tip facing the discharge portion; and first and second vane guides obliquely extending from the tip in a direction in which the air is discharged, wherein the first and second vane guides may be formed to form a set angle with respect to the tip.

It is axially connected to the motor and may further include a pinion gear interlocked with the rack gear.

The motor may include a first motor connected to the upper part of the air flow guide device and a second motor connected to the lower part of the air flow guide device to provide driving force to the upper and lower parts of the air flow guide device.

According to the above-described solution, the direction of the discharged air flow discharged from the air purifier can be easily adjusted.

In addition, since the air flow guide device is movably provided at the discharge part of the air purifier, there is a concentrated wind mode in which the air flow is concentrated forward and discharged centered on the air purifier, a diffused wind mode in which the air flow is diffused and discharged laterally, and an air flow directed to the air purifier. You can easily perform the rear wind mode, which allows exhaust to the rear towards the center.

In addition, an embodiment of the present invention includes a motor assembly to move the airflow guide device, and by driving the motor assembly, the airflow guide device moves closer to or away from the discharge portion, thereby controlling the flow of air. The discharge direction can be adjusted in various ways.

Additionally, since the rack gear of the motor assembly and the airflow guide device are connected by pins, the airflow guide device can be easily moved.

In addition, it is provided with a vane that can separate the air discharged from the air purifier in two directions, and an airflow guide device is placed on the discharge side of the vane, so that air can easily flow along the surface of the air purifier due to the Coanda effect. You can.

Figure 1 is a perspective view showing the configuration of an air purifier according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing the configuration of an air purifier according to an embodiment of the present invention.
Figure 3 is a cross-sectional view taken along line 3-3' in Figure 1.
Figure 4 is a cross-sectional view taken along line 4-4' in Figure 1.
Figure 5 is a diagram showing the configuration of an airflow guide device and motor assembly according to an embodiment of the present invention.
Figure 6 is a diagram showing the pin connection between the upper part of the airflow guide device and the rack gear of the first motor assembly according to an embodiment of the present invention.
Figure 7 is a diagram showing the pin connection between the lower part of the airflow guide device and the rack gear of the second motor assembly according to an embodiment of the present invention.
Figure 8 is a view showing the airflow guide device according to an embodiment of the present invention with the discharge portion closed.
Figure 9 is a view showing the airflow guide device according to an embodiment of the present invention opened horizontally to the rear.
Figure 10 is a cross-sectional view showing the airflow guide device according to an embodiment of the present invention being opened rearward to implement concentrated wind.
Figure 11 is a cross-sectional view showing how the airflow guide device according to an embodiment of the present invention is opened rearward to implement diffused wind.
Figure 12 is a cross-sectional view showing the airflow guide device according to an embodiment of the present invention being opened rearward to create a rear wind.
Figure 13 is a block diagram showing a partial configuration of an air purifier according to an embodiment of the present invention.
Figure 14 is a cross-sectional view showing air flow in an air purifier according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, that component may be directly connected or connected to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

FIG. 1 is a perspective view showing the configuration of an air purifier according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing the configuration of an air purifier according to an embodiment of the present invention, and FIG. 3 is 3-3' of FIG. 1. It is a cross-sectional view cut along line, and Figure 4 is a cross-sectional view cut along line 4-4' in Figure 1.

1 to 4, the air purifier 10 according to an embodiment of the present invention includes a body 100 forming suction parts 110a and 112a for sucking air, and a discharge part 215 for discharging air. It includes a discharge device 200 that forms.

The discharge device 200 is provided on the upper side of the body 100, and the discharge portion 215 may be formed on the upper side of the suction portions 110a and 112a. Accordingly, the air purifier 10 may be configured to suck in air from the bottom and discharge air from the top.

The body 100 may have a cylindrical shape.

The body 100 includes a case composed of two parts 110 and 112. For example, the case may be composed of two parts that can be separated from each other. As another example, one of the two parts may be fixed and the other part may be separated.

The two parts 110 and 112 include a first part 110 and a second part 112. The first part 110 and the second part 112 may each have a semi-cylindrical shape.

The body 100 is formed with suction parts 110a and 112a through which air is sucked in the radial direction. The suction portions 110a and 112a include holes formed through at least a portion of the body 100. A plurality of suction parts 110a and 112a are formed.

The plurality of suction parts 110a and 112a are formed evenly in the circumferential direction along the outer peripheral surface of the body 100 to enable air suction from any direction with respect to the body 100. That is, air can be sucked in in a 360-degree direction based on the vertical center line passing through the inner center of the body 100.

The suction parts 110a and 112a include a first suction part 110a formed in the first part 110 and a second suction part 112a formed in the second part 112.

Define direction. Based on Figure 1, the vertical direction is called the axial direction, and the horizontal direction is called the radial direction. The axial direction may correspond to the central axis direction of the fan 130, which will be described later, that is, the direction of the motor shaft 142 of the fan 130. And, the radial direction can be understood as a direction perpendicular to the axial direction. And, the circumferential direction is understood as a virtual circular direction formed when rotating with the axial direction as the center and the radial distance as the rotation radius.

A lower cover 165 is provided at the lower part of the body 100. The lower cover 165 can be understood as a base placed on the ground. The lower cover 165 may be detachably coupled to the body 100.

A control device 160 including a controller that controls the air purifier 10 may be provided on the upper part of the lower cover 165.

The body 100 includes a filter member 120 that purifies air sucked through the suction units 110a and 112a. The filter member 120 may be placed above the control device 160.

The filter member 120 may be provided to be detachable from the body 100. When either one of the two parts 110 and 112 or both the second parts 110 and 112 are opened, the filter member 120 can be pulled out in the radial direction.

The filter member 120 may have a cylindrical shape corresponding to the cylindrical body 100. In detail, the filter member 120 may have a hollow cylindrical shape by forming a filter opening 121 having upper and lower portions open. The air sucked through the suction parts 110a and 112a is filtered while passing through the filter member 120 and may flow upward through the filter opening 121.

The body 100 includes a filter frame 125 provided outside the filter member 120. A plurality of filter frames 125 are provided and arranged in the circumferential direction, and can form a mounting space for the filter member 120.

The filter frame 125 extends upward from the upper side of the lower cover 165 and may extend to the top of the filter member 120.

The body 100 includes a fan 130 that generates blowing force to suck air. The fan 130 may be provided inside the fan housing 135.

The fan housing 135 is provided on the upper side of the filter member 120 and may be supported by the filter frame 125. The upper end of the filter frame 125 may support the fan housing 135.

A housing inlet 136 through which air passing through the filter member 120 flows is formed at the lower end of the fan housing 135. The fan 130 is provided above the housing inlet 136.

The fan 130 may be configured as a centrifugal fan.

A fan motor 140 that provides driving force to the fan 130 is provided above the fan 130. The motor shaft 142 of the fan motor 140 may be coupled to the hub of the fan 130.

A motor cover 145 is provided on the upper side of the fan motor 140.

When the fan 130 is driven, air passing through the filter member 120 may flow upward through the fan 130.

The discharge device 200 may be coupled to the body 100 and extend upward. The vertical height of the discharge device 200 may be greater than the vertical height of the body 100.

The discharge device 200 includes a discharge body 210 that forms an exterior. The discharge body 210 may have the shape of a thin panel with small left and right widths. A discharge passage 224 is formed inside the discharge body 210.

From another perspective, the discharge body 210 may have a leaf shape in which the vertical height is larger than the left and right widths of the discharge passage 224.

Additionally, a discharge portion 215 through which air is discharged is formed at the rear of the discharge body 210. The discharge unit 215 is provided with an airflow guide device 250 that adjusts the flow direction of the air discharged from the discharge unit 215.

For example, air discharged to the rear of the air purifier 10 through the discharge unit 215 may be guided by the airflow guide device 250 and flow forward. At this time, air may flow along the side of the discharge body 210.

Define direction. The direction in which the airflow guide device 250 is located relative to the discharge body 210 is defined as the rear, and the direction opposite to it is defined as the front. And, the direction with a small width is defined as the left and right direction.

The discharge passage 224 may have a relatively large front-to-back width and a relatively large vertical height, and a small left-right width.

Inside the discharge body 210, a flow path guide 220 defining the discharge flow path 224 is provided. The flow guide 220 extends upward from the upper end of the fan housing 135 and may be configured to bend backward.

In detail, the flow guide 220 includes a first guide part 221 extending upward from the fan housing 135 and a second guide part 223 extending rearward from the top of the first guide part 221. Includes. Due to the first and second guide parts 221 and 223, the flow guide 220 may be bent or rounded into an “L” shape.

The discharge passage 224 may be understood as an air passage defined by the fan housing 135, the passage guide 220, and the air flow guide device 250. The air flowing through the discharge passage 224 may be discharged through the discharge portion 215 formed at the rear end of the discharge main body 210.

The discharge device 200 includes a vane 260 provided at the discharge unit 215 to distribute air discharged from the discharge unit 215 in two directions. The vane 260 may be supported by a support cover 267 provided inside the discharge body 210.

The support cover 267 covers the second motor assembly 240, and the lower end of the vane 260 may be supported on the upper surface of the support cover 267. The vane 260 may extend upward from the support cover 267. Additionally, the vane 260 may be located outside the rear of the discharge portion 215.

The vane 260 includes a vane body that has the shape of an approximately triangular pillar. In detail, the vane body includes a first vane guide 261 that extends obliquely to the rear right with respect to the front tip 260a, and a second vane guide 262 that extends obliquely to the rear left with respect to the front tip 260a. Includes.

The first and second vane guides 261 and 262 may form a rounded curved surface to smoothly guide airflow.

The front tip 260a is configured to face the discharge unit 215, and the first and second vane guides 261 and 262 may extend obliquely from the front tip 260a in the direction in which the air is discharged. Additionally, the first and second vane guides 261 and 262 may be formed to form a set angle based on the tip.

The vane body includes a guide connection portion 263 connecting the rear portions of the first and second vane guides 261 and 262. The guide connection portion 263 may be configured to face the inner surface of the airflow guide device 250.

The air discharged rearward through the discharge portion 215 is branched to the left and right at the front tip 260a, and some of the air flows to the rear right by the first vane guide 261 and the remaining air flows to the second It can flow to the left rear by the vane guide 262.

The discharge device 200 further includes an airflow guide device 250 that is movable so as to adjust the opening and closing area of the discharge unit 215.

The airflow guide device 250 may be configured to surround the left, right, and rear sides of the vane 260. Accordingly, when the airflow guide device 250 is positioned to close the discharge portion 215, the vane 260 is located inside the airflow guide device 250 and may not be exposed to the outside.

The airflow guide device 250 may be configured to have a wedge shape. In detail, the airflow guide device 250 is bent to have a wedge shape (V shape), and both side portions of the airflow guide device 250 are provided to be coupled to or supported by the thin left and right sides of the discharge body 210. You can.

The airflow guide device 250 includes a first guide part 251 forming a V-shaped bent first surface and a second guide part 253 forming a V-shaped bent second surface.

The first and second guide parts 251 and 253 may have a bar shape extending long in the vertical direction. In addition, the first and second guide parts 251 and 253 may be formed to be rounded with a predetermined curvature corresponding to the shape of the discharge part 215 so as to close the discharge part 215.

The air discharged from the discharge unit 215 is distributed to both rear sides by the first and second vane guides 262 and 263, and can be directed forward by the first and second guide units 251 and 253. In other words, the first and second guide parts 251 and 253 can be understood as a direction changing device that changes the direction of discharged air from the rear to the front.

When defining the center line (ℓ1) crossing the center (Co) in the front and rear direction of the discharge body 210 to the left and right, the front and rear separation distance (S1) from the center (Co) to the airflow guide device 250 is It may be formed to be larger than the maximum width (do, see FIG. 10) in the left and right directions of the discharge body 210. At this time, the separation distance S1 can be understood as the distance from the center Co to the rearmost part of the airflow guide device 250.

Guide ribs 271 and 273 are provided on the inner surface of the discharge body 210 to guide the flow of air discharged to the discharge portion 215. The guide ribs 271 and 273 protrude from the inner surface of the discharge body 210 and may be configured to extend forward from a position adjacent to the discharge portion 215.

A plurality of guide ribs 271 and 273 may be provided. The plurality of guide ribs 271 and 273 include a first guide rib 271 and a second guide rib 273 provided spaced apart from the upper side of the first guide rib 271. The air discharged from the fan 130 and flowing upward is diverted backward through the flow guide 220, and is guided by the first and second guide ribs 271 and 273 to be discharged from the discharge unit 215. You can.

The air purifier 10 further includes a driving device for moving the air flow guide device 250. The driving device includes a first motor assembly 230 and a second motor assembly 240.

The first motor assembly 230 is provided on the upper part of the discharge body 210 in the vertical direction and may be connected to the upper part of the airflow guide device 250.

The second motor assembly 230 is provided at the lower part of the discharge body 210 in the vertical direction and may be connected to the lower part of the airflow guide device 250.

Referring to FIGS. 2 and 6 together, the first motor assembly 230 is axially connected to the first motor 231 provided inside the discharge body 210 and rotates. It includes a first pinion gear 233 and a first rack gear 235 that is gear-coupled with the first pinion gear 233 and moves in the front-back direction.

The first motor 231 may be configured as a step motor capable of rotating in both directions. The first motor 231 may be supported by a bracket inside the discharge body 210 or may be fastened to the inner surface of the discharge body 210.

The first rack gear 235 is provided below the first pinion gear 233 and may be interlocked with the first pinion gear 233.

The first rack gear 235 includes a bar-shaped first rack body 235a extending in the front-rear direction. The first rack body 235a forms a plurality of gear teeth 235b. For example, the plurality of gear teeth 235b may be formed on the upper surface of the first rack body 235a.

A first guide hole 235c is formed to penetrate the first rack body 235a in the front-back direction.

A first guide protrusion 218a (see FIG. 6) protruding from the inner surface of the discharge body 210 may be inserted into the first guide hole 235c. The first guide protrusion 218a is inserted into the first guide hole 235c to support the first rack gear 235, and when the first rack gear 235 moves in the front-back direction, the first guide Relative movement is performed within the hole 235c.

The first rack body 235a includes a first pin 237 coupled to the upper part of the airflow guide device 250. The first pin 237 may be inserted into the insertion hole 255a (see FIG. 6) of the airflow guide device 250.

When the first rack 235 moves forward and backward, the first pin 237 can move the airflow guide device 250 by pressing it in the forward and backward direction. In addition, the first pin 237 can move relative to the vertical direction of the insertion hole 255a and have a degree of freedom in the vertical direction.

In detail, when the first motor 231 is driven, the first pinion gear 233 and the first rack 235 are interlocked so that the first rack 235 can move linearly in the forward and backward directions. When the first rack 235 moves, the first pin 237 moves forward and backward to move the airflow guide device 250 forward and backward.

Meanwhile, when the driving of any one of the first and second motors 231 and 241 stops or the driving speed of the first and second motors 231 and 241 changes, the moving distance of the first rack 235 and the 2 The moving distance of the rack 245 varies. At this time, the first pin 237 can move relatively within the insertion hole 255a with a degree of freedom in the vertical direction and guide the smooth movement of the airflow guide device 250.

Therefore, even if the first and second motors 231 and 241 are controlled at the same rotation speed, it is possible to prevent the phenomenon in which the forward and backward movement of the airflow guide device 250 is restricted due to slightly different rotation speeds. Therefore, it is possible to prevent noise or malfunction from occurring when the airflow guide device 250 is moved.

Referring to FIGS. 2 and 7 together, the second motor assembly 240 is axially connected to a second motor 241 provided inside the discharge body 210 and the second motor 231 to rotate. It includes a second pinion gear 243 and a second rack gear 245 that is gear-coupled with the second pinion gear 243 and moves in the front-back direction.

The second motor 241 may be configured as a step motor capable of rotating in both directions.

The second rack gear 245 is provided on the upper side of the second pinion gear 243 and may be interlocked with the second pinion gear 243.

The second rack gear 245 includes a bar-shaped second rack body 245a extending in the front-rear direction. The second rack body 245a forms a plurality of gear teeth 245b. For example, the plurality of gear teeth 245b may be formed on the lower surface of the second rack body 245a.

A second guide hole 245c is formed to penetrate the second rack body 245a in the front-back direction.

A second guide protrusion 218b (see FIG. 7) protruding from the inner surface of the discharge body 210 may be inserted into the second guide hole 245c. The second guide protrusion 218b is inserted into the second guide hole 245c to support the second rack gear 245, and when the second rack gear 245 moves in the forward and backward directions, the second guide Relative movement is performed within the hole 245c.

The second rack body 245a includes a second pin 247 coupled to the lower part of the airflow guide device 250. The second pin 247 may be inserted into the pin groove 259 (see FIG. 7) of the airflow guide device 250. When the second rack 235 moves forward and backward, the second pin 247 moves forward and backward to move the airflow guide device 250. And, the second pin 247 can rotate inside the pin groove 259.

When the second motor 241 is driven, the second pinion gear 243 and the second rack 245 are interlocked, so that the second rack 245 can move linearly in the forward and backward directions. When the second rack 245 moves, the airflow guide device 250 may rotate around the pin groove 259 or move in the front-back direction due to the action of the second pin 247.

Therefore, even if there is a difference in the driving speed of the first and second motors (231 and 241) and the moving distance of the first and second racks (235 and 245) are different, the second pin (247) remains in the pin groove (259). Since the first pin 237 can rotate around the center and has a degree of freedom to move up and down within the insertion hole 255a, smooth movement of the airflow guide device 250 can be possible.

In other words, the coupling structure of the first and second pins 237 and 247 can be understood as a “safety device” that ensures reliable movement of the airflow guide device 250.

Hereinafter, the configuration and operation of the first and second motor assemblies 230 and 240 will be described in more detail with reference to the drawings.

Figure 5 is a diagram showing the configuration of an airflow guide device and a motor assembly according to an embodiment of the present invention, and Figure 6 is a view showing the upper part of the airflow guide device according to an embodiment of the present invention and the rack gear of the first motor assembly being pin-connected. , and FIG. 7 is a view showing the lower part of the airflow guide device according to an embodiment of the present invention and the rack gear of the second motor assembly being pin-connected.

5 to 7, the airflow guide device 250 according to an embodiment of the present invention is provided to be movable by the first and second motor assemblies 230 and 240 to open or close the discharge portion 215. You can.

The first motor assembly 230 may be connected to the top of the vertical center of the airflow guide device 250 to provide power. In addition, the second motor assembly 230 may be connected to the lower part of the vertical center reference of the airflow guide device 250 to provide power.

The first motor assembly 230 includes a first motor 231 having a motor shaft 231a, a first pinion gear 233 coupled to the motor shaft 231a, and the first pinion gear 233. It includes a first rack gear 235 that is interlocked.

The first rack gear 235 has a bar shape extending in the front-rear direction and is formed by penetrating the first rack body 235a in the front-back direction and the first rack body 235a on which a plurality of gear teeth 235b are formed. And a second guide hole 235c is formed into which the first guide protrusion 218a of the discharge body 210 is inserted.

A first pin 237 coupled to the airflow guide device 250 is provided at the rear of the first rack body 235a. The first pin 237 may protrude laterally from the first rack body 235a.

The first pin 237 may be inserted into the insertion hole 255a of the airflow guide device 250. In detail, a pin coupling portion 255 forming the insertion hole 255a is provided on the upper part of the airflow guide device 250.

For example, the pin coupling portion 255 may be provided on the inner surface of the second guide portion 253 among the first and second guide portions 251 and 253 constituting the airflow guide device 250. Of course, the pin coupling portion 255 may also be provided in the first guide portion 251.

The insertion hole 255a is formed through the pin coupling portion 255 and may be formed obliquely long in the vertical direction. The first rack body 235a extends into the inner space of the first and second guide parts 251 and 253, and the first pin 237 is inserted into the insertion hole 255a, Relative movement can be performed to the top or bottom of .

The second motor assembly 230 includes a second motor 241 having a motor shaft 241a, a second pinion gear 243 coupled to the motor shaft 241a, and the second pinion gear 243. It includes a second rack gear 245 that is interlocked.

The second rack gear 245 has a bar shape extending in the front-rear direction and is formed by penetrating the second rack body 245a and the second rack body 245a on which a plurality of gear teeth 245b are formed in the front-back direction. And a second guide hole 245c is formed into which the second guide protrusion 218b of the discharge body 210 is inserted.

A second pin 247 coupled to the airflow guide device 250 is provided at the rear of the second rack body 245a. The second pin 247 may protrude laterally from the first rack body 235a.

The second pin 247 may be inserted into the pin groove 259 of the airflow guide device 250. The second pin 247 is hinged to the pin groove 259, and thus the second rack gear 245 or the airflow guide device 250 can rotate based on the pin groove 259. there is.

For example, the pin groove 259 may be formed on the inner surface of the second guide part 253 among the first and second guide parts 251 and 253 constituting the airflow guide device 250. Of course, the pin groove 259 may also be formed in the first guide portion 251.

Meanwhile, in the above embodiment, it was explained that the first pin 237 is inserted into the insertion hole and the second pin 247 is inserted into the pin groove. However, on the contrary, the first pin 237 is inserted into the pin groove. The second pin 247 may be configured to be inserted into the insertion hole.

Figure 8 is a view showing the airflow guide device according to an embodiment of the present invention with the discharge portion closed, and Figure 9 is a view showing the airflow guide device according to an embodiment of the present invention opened horizontally to the rear. 10 is a cross-sectional view showing the airflow guide device according to an embodiment of the present invention being opened rearward to realize concentrated wind.

First, referring to FIG. 8, when the air purifier 10 is not operating, the air flow guide device 250 may be moved forward to close the discharge portion 215. In this state, the rear surface of the airflow guide device 250 may not protrude rearward so as to form a smooth surface, i.e., the same surface as the outer surface of the discharge body 210.

Figure 9 shows the airflow guide device 250 moving horizontally backward as the first and second motor assemblies 230 and 240 are driven.

First, when the first motor 231 of the first motor assembly 230 drives, the first pinion gear 233 rotates counterclockwise, and the first rack gear 235 rotates counterclockwise. ) and moves backwards.

At this time, the first guide protrusion 218a supports the first rack gear 235, and when the first rack gear 235 is moved rearward, it contacts the front end of the first guide hole 235c. It may be located adjacent to this.

When the first rack gear 235 moves rearward, the first pin 237 presses the pin coupling portion 255 rearward and the upper part of the airflow guide device 250 can move rearward.

Next, when the second motor 241 of the second motor assembly 240 is driven, the second pinion gear 243 rotates clockwise, and the second rack gear 245 rotates clockwise. ) and moves backwards.

At this time, the second guide protrusion 218b supports the second rack gear 245, and contacts the front end of the second guide hole 245c when the second rack gear 245 is moved rearward. It may be located adjacent to this.

When the second rack gear 245 moves rearward, the second pin 247 presses the pin groove 259 rearward and the upper part of the airflow guide device 250 can move rearward.

Accordingly, by driving the first and second motors 231 and 241, the airflow guide device 250 can move rearward and open the discharge portion 215. At this time, the rotation speed of the first motor 231 and the rotation speed of the second motor 241 may be the same. The first and second motors 231 and 241 can be synchronized and controlled to have the same rotation speed.

However, even if the first and second motors 231 and 241 are synchronized, if a motor failure or control error occurs, a difference may occur in the driving speeds of the first and second motors 231 and 241. If the first and second pins 237 and 247 are fixedly coupled to the airflow guide device 250, the airflow guide device 250 may not move smoothly and noise may be generated or the airflow guide device 250 may be damaged. You can.

However, as in the present embodiment, the first pin 237 is inserted into the insertion hole 255a and the second pin 247 is hinged to the pin groove 259, so the rotation of the airflow guide device 250 This action can be performed to allow smooth movement of the airflow guide device 250.

For example, the driving speed of the first motor 231 is greater than the driving speed of the second motor 241, so the rear moving distance of the first rack gear 235 is the rear of the second rack gear 245. If it is greater than the moving distance, the second pin 247 rotates based on the pin groove 259 and the first pin 237 moves to the lower part of the insertion hole 255a. .

Accordingly, the upper part of the airflow guide device 250 rotates backward around the lower part, thereby allowing more air to be discharged through the upper part of the discharge unit 215.

On the other hand, the driving speed of the second motor 241 is greater than the driving speed of the first motor 231, so the rearward movement distance of the second rack gear 245 is the rearward movement of the first rack gear 235. If the distance is greater than the distance, the second pin 247 may rotate based on the pin groove 259 and the first pin 237 may move to the upper part of the insertion hole 255a.

Accordingly, the lower part of the airflow guide device 250 rotates backward around the upper part, allowing more air to be discharged through the lower part of the discharge unit 215.

Meanwhile, the first pinion gear 233 is gear-coupled with the upper side of the first rack gear 235, and the second pinion gear 243 is gear-coupled with the lower side of the second rack gear 245. In order to move the first and second rack gears 235 and 245 backward, the rotation directions of the first motor 231 and the second motor 241 may be opposite.

Figure 10 shows that when the airflow guide device 250 moves rearward and opens the discharge unit 215, the air discharged rearward from the discharge unit 215 is distributed in both directions by the vane 260 and flows into the airflow. The direction is changed by the guide device 250 and appears to flow forward.

The air distributed by the vane 260 is directed forward after hitting the inner surface of the first and second guide parts 251 and 253, and is directed to the front end of the first and second guide parts 251 and 253 and the discharge body 210. ) can flow forward through the small space between the outer surfaces of the

Therefore, the air flows close to the surface of the discharge body 210, and does not diffuse far from the surface of the discharge body 210 due to the Coanda effect, but flows forward along the surface of the discharge body 210. can flow.

The outer surface of the discharge body 210 has a rounded and smooth shape with a predetermined curvature for smooth flow of air, and may be configured to increase and then decrease in left and right width as it moves forward from the discharge portion 215.

In detail, when defining a center line (ℓ1) that crosses the center (Co) in the front and rear direction of the discharge body 210 to the left and right, the left and right width (do) of the discharge body 210 through which the center line (ℓ1) passes is the discharge It may be formed to be larger than the rear left and right width d1 and the front left and right width d2 of the main body 210.

Due to this configuration of the discharge body 210, the left and right widths of the discharge passage 224 formed inside the discharge main body 210 at the center may be formed to be larger than the left and right widths of the front and rear portions.

When the air discharged from the discharge unit 215 moves forward along both sides of the discharge body 210, the air may spread apart and flow, then concentrate at the front end of the discharge body 210 and be finally discharged.

The air discharge mode in the state shown in FIG. 10 may be called “concentrated wind mode.” In the concentrated wind mode, the driving speed of the first and second motors 231 and 241 forms a first driving speed.

Referring to FIG. 13, the air purifier 10 includes input units 310 and 320. The input units 310 and 320 may be provided on the outer surface of the body 100 or the discharge device 200. The input units 310 and 320 include a power input unit 310 that can turn on/off the power of the air purifier 10 and a mode input unit 320 that can input commands related to the operation mode.

Through the mode input unit 320, one of a plurality of operation modes of the air purifier 10, namely, “focused wind mode,” “diffused wind mode,” and “rear wind mode,” can be executed. When one of the above modes is selected by the user, the control unit 350 can control the driving speed of the first motor 231 and the second motor 241.

When the concentrated wind mode is executed, the control unit 350 controls the driving speed of the first and second motors 231 and 241 to the “first driving speed”, and the airflow guide device 250 moves backward as shown in FIG. 10. You can move to .

At this time, by driving the first and second motors 231 and 241, the distance that the airflow guide device 250 moves backward may be relatively small. If the distance at which the airflow guide device 250 moves backward increases too much and the distance between the front end of the airflow guide device 250 and the outer surface of the discharge body 210 becomes too large, the Coanda effect may occur. The concentrated wind effect may not occur.

Therefore, in the concentrated wind mode, when the driving speed of the first and second motors 231 and 241 forms the first driving speed, the distance between the airflow guide device 250 and the front and rear center (Co) is the first. A distance (S2) can be formed. In detail, the first distance S2 may be understood as the distance between the rearmost portion of the airflow guide device 250 and the center Co in the front-back direction.

Due to the position of the airflow guide device 250, most of the airflow discharged from the discharge unit 215 hits the inner surface of the airflow guide device 250 and is diverted forward, and the surface of the discharge body 210 It can be concentrated and discharged forward along the .

Figure 11 is a cross-sectional view showing the airflow guide device according to an embodiment of the present invention opening backwards to create a diffused wind, and Figure 12 is a cross-sectional view showing the airflow guide device according to an embodiment of the present invention opening backwards to generate a rear wind. This is a cross-sectional view showing how it is implemented.

First, referring to FIG. 11, the air purifier 10 according to an embodiment of the present invention can perform a diffused wind mode.

When the user inputs the diffusion wind mode through the mode input unit 320, the control unit 350 controls the driving speed of the first and second motors 231 and 241 to “second driving speed”, and the airflow guide device ( 250) can move rearward as shown in FIG. 11. The second driving speed may be greater than the first driving speed.

The distance that the airflow guide device 250 moves backward in the diffuse wind mode may be greater than the distance that the airflow guide device 250 moves rearward in the concentrated wind mode.

In detail, in the diffusion wind mode, when the driving speed of the first and second motors 231 and 241 forms the second driving speed, the distance between the airflow guide device 250 and the front and rear center (Co) is the second driving speed. A distance (S3) can be formed. In detail, the second distance S3 is understood as the distance between the rearmost portion of the airflow guide device 250 and the anteroposterior center Co, and may be greater than the first distance S2.

When defining a first extension line (ℓ2) passing through the first vane guide 261 and a second extension line (ℓ2') passing through the second vane guide 262 based on the front tip 260a, the The first and second extension lines ℓ2 and ℓ2' may be formed to pass through (penetrate) the first and second guide portions 251 and 253, respectively.

According to the position of the airflow guide device 250, the distance between the discharge unit 215 and the airflow guide device 250 is relatively large, so that among the airflow discharged from the discharge unit 215, the airflow guide device ( 250), the amount of airflow hitting the inner surface decreases. Accordingly, the airflow discharged from the discharge unit 215 does not change direction forward, but may spread and flow toward the left and right sides of the discharge body 210.

Next, referring to FIG. 12, the air purifier 10 according to an embodiment of the present invention can perform a rear wind mode.

When the user inputs the rear wind mode through the mode input unit 320, the control unit 350 controls the driving speed of the first and second motors 231 and 241 to the “third driving speed”, and the airflow guide device ( 250) can move rearward as shown in FIG. 12. The second driving speed may be greater than the first driving speed.

The distance that the airflow guide device 250 moves backward in the rear wind mode may be greater than the distance that the airflow guide device 250 moves rearward in the diffuse wind mode.

In detail, in the diffusion wind mode, when the driving speed of the first and second motors 231 and 241 forms the third driving speed, the distance between the airflow guide device 250 and the front and rear center (Co) is the third driving speed. A distance (S4) can be formed. In detail, the third distance S4 is understood as the distance between the rearmost part of the airflow guide device 250 and the front-to-back center Co, and may be greater than the second distance S3.

When defining a first extension line (ℓ3) passing through the first vane guide 261 and a second extension line (ℓ3') passing through the second vane guide 262 based on the front tip 260a, the The first and second extension lines ℓ3 and ℓ3' may not meet the first and second guide portions 251 and 253, respectively.

Alternatively, the first and second extension lines ℓ3 and ℓ3' form a first guide tip 251a that forms the front end of the first guide portion 251 and a front end of the second guide portion 253, respectively. It can be in contact with the second guide tip 253a.

According to the position of the air flow guide device 250, the distance between the discharge unit 215 and the air flow guide device 250 is formed to be very large, so that among the air flows discharged from the discharge unit 215, the air flow guide device 250 ), there is no or almost no amount of airflow hitting the inner surface of the device. Accordingly, the airflow discharged from the discharge unit 215 may flow toward the rear of the discharge body 210 without changing direction.

According to this operation mode, the direction of the airflow discharged from the air purifier 10 can be adjusted, thereby increasing user convenience.

Figure 14 is a cross-sectional view showing the air flow in an air purifier according to an embodiment of the present invention.

10 to 14, when the air purifier 10 is turned on and the fan 130 is driven, air is sucked into the body 100 through the first and second suction parts 110a and 112a. This can be done. Air may be sucked in radially in a 360-degree direction based on the axial direction of the body 100, that is, the axial direction of the fan 130.

The air sucked into the body 100 is purified as it passes through the filter member 120, and may pass through the fan 130 located above the filter member 120.

The air passing through the fan 130 flows upward and flows into the discharge device 200 and passes through the discharge passage 224. At this time, the air is diverted backward by the flow path guide 220 and discharged to the rear of the discharge device 200 through the discharge portion 215 formed at the rear end of the discharge device 200.

At this time, based on the distance the airflow guide device 250 moves rearward, concentrated wind mode, diffuse wind mode, or rear wind mode may be executed.

When the concentrated wind mode is executed, the air discharged from the discharge unit 215 is distributed in both directions by the vane 260, is changed in direction by the airflow guide device 250, and flows forward. Additionally, the air may rejoin the front end of the discharge device 200 and be discharged concentrated forward.

When the diffusion wind mode is executed, the air discharged from the discharge unit 215 is distributed in both directions by the vane 260, but the amount hitting the airflow guide device 250 is small, so it does not change direction forward and is discharged. It may diffuse and flow laterally of the main body 210.

When the rear wind mode is executed, the air discharged from the discharge unit 215 is distributed in both directions by the vane 260, but the amount hitting the airflow guide device 250 is minimal or not. Accordingly, the airflow can flow to the rear of the discharge body 210 without changing direction.

According to the operation of the air purifier 10, the direction of the airflow discharged from the air purifier 10 can be changed in various ways according to the user's request.

10: air purifier 100: body
110: first part 110a: first suction part
112: second part 112a: second suction part
120: filter member 130: fan
140: fan motor 200: discharge device
210: Discharge body 220: Euro guide
224: discharge passage 230: first motor assembly
231: first motor 233: first pinion gear
235: first rack gear 240: second motor assembly
241: second motor 243: second pinion gear
245: second rack gear 250: airflow guide device
251: 1st guide part 253: 2nd guide part
260: vane 310: power input unit
320: mode input unit 350: control unit

Claims (15)

A body including a filter member and a fan;
a discharge device including first and second sides extending forward and backward, respectively, forming an oval-shaped appearance, and having a discharge portion disposed at the rear end through which air passing through the fan is discharged;
It has a V-shape bent toward the rear, and the discharge portion is closed, or the rear airflow discharged from the discharge portion is converted to flow forward along the first and second sides depending on the distance spaced rearward, or is discharged rearward as is. air flow guide device;
a motor provided in the discharge device and providing driving force to the airflow guide device; and
An air purifier including a control unit that controls the driving speed of the motor to adjust the distance at which the airflow guide device is separated from the discharge unit. According to claim 1,
It further includes a rack connecting the motor and the airflow guide device,
The control unit,
So that the airflow guide device moves rearward and away from the discharge unit or moves forward to approach the discharge unit according to the movement of the rack,
An air purifier that controls the driving speed of the motor. According to claim 1,
The discharge device includes a discharge body forming a discharge passage extending upward from the body,
An air purifier having a leaf shape in which the front-to-back length of the discharge body is larger than the left-right width. According to claim 3,
The airflow guide device,
An air purifier configured to have a bent shape so that air discharged backward through the discharge unit can be diverted to the front. According to claim 4,
The airflow guide device,
An air purifier having a wedge shape to cover a portion of the outer surface of the discharge device when the discharge portion is closed. According to claim 4,
The airflow guide device,
a first guide portion disposed outside a first side of the discharge device; and
It is disposed outside the second side of the discharge device and includes a second guide portion bent from the first guide portion,
The first and second sides form opposite sides of the discharge device. According to claim 1,
When the airflow guide device opens the discharge portion, the front-to-back distance from the front-back center of the discharge device to the airflow guide device is,
An air purifier wherein the air flow guide device is formed to be larger than the front-to-back distance from the front-back center of the discharge device to the air flow guide device when the air flow guide device closes the discharge unit. According to claim 7,
The control unit,
Depending on the operation mode, the front-to-back distance from the front-to-back center of the discharge device to the airflow guide device can increase or decrease,
An air purifier that increases or decreases the driving speed of the motor. According to claim 8,
In the first operation mode, the control unit
So that the airflow discharged backward from the discharge unit hits the airflow guide device and changes direction forward, forming a concentrated wind.
An air purifier that controls the driving speed of the motor to a first driving speed. According to clause 9,
The control unit is in the second operation mode,
A portion of the airflow discharged rearward from the discharge unit hits the airflow guide device and spreads to the side of the discharge device to form a diffused wind,
Controlling the driving speed of the motor to a second driving speed,
An air purifier wherein the second driving speed is greater than the first driving speed. According to claim 10,
The control unit is in the third operation mode,
So that the airflow discharged backward from the discharge unit forms a rear wind without hitting the airflow guide device,
Controlling the driving speed of the motor to a third driving speed,
An air purifier wherein the third driving speed is greater than the second driving speed. According to claim 1,
It is provided at the discharge part of the discharge device and further includes a vane that distributes air discharged from the discharge part,
The vane is an air purifier disposed inside the airflow guide device. According to claim 12,
The vane is,
A tip for looking at the discharge unit; and
It includes first and second vane guides extending obliquely from the tip in a direction in which the air is discharged,
An air purifier wherein the first and second vane guides are formed at a set angle with respect to the tip. According to claim 1,
A rack gear axially connected to the motor; and
An air purifier further comprising a pinion gear interlocked with the rack gear. According to claim 1,
The motor provides driving force to the upper and lower parts of the airflow guide device,
An air purifier comprising a first motor connected to an upper part of the air flow guide device and a second motor connected to a lower part of the air flow guide device.

Images