KR102510228B1 - Air cleaning apparatus and control method thereof - Google Patents

Abstract

The present invention relates to an air purifier and a control method thereof. An air purifier according to the spirit of the present invention includes a first blower, a second blower provided above the first blower, a flow conversion device movably provided above the second blower, and the first blower. A battery for supplying power to at least one of a blower, the second blower and the flow converter, and at least one of the first blower, the second blower and the flow converter with power from the battery A control unit for driving is included, and the battery includes a relay unit for opening and closing the input or output current of the battery and a current sensing unit for measuring a current value input or output from the battery, the current measured by the current sensing unit. When the value does not fall within the normal range, the relay unit cuts off the current of the battery.

Description

Air purifier and its control method {AIR CLEANING APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to an air purifier and a control method thereof.

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

The air purifier is configured to purify an indoor space such as a home or an office. The air purifier includes a fan for forced convection of indoor air and a discharge port through which air convected by the fan and passing through the filter is discharged.

At this time, the fan is installed so as to be exposed to the outside through the discharge port for ventilation efficiency and the like. Accordingly, when a foreign substance or the like is introduced into the outlet, a fan lock state in which the fan is not normally driven may occur.

In this case, damage to various devices such as failure of the fan or a fan motor driving the fan may occur, and in the fan lock state, air required by the user cannot be supplied. Therefore, in order to detect such a fan lock state and take measures accordingly, the present applicant has filed the following prior art documents.

Prior literature: Patent Publication No. 10-2007-0019196, fan lock detection method of air conditioner

According to the prior literature, the fan lock state is determined by inputting a minimum voltage to the fan motor and detecting whether the fan motor is rotated by the minimum voltage. This corresponds to a method of detecting the initial start-up of the air purifier and the fan lock state in advance.

However, since the fan lock state generally occurs when the air purifier is continuously driven, it is practically insufficient to determine the fan lock state only at the initial stage of startup.

In addition, when a fan lock state occurs while driving the air purifier, the fan motor may determine that power is insufficient and continuously increase power. Accordingly, there are problems in that the fan motor may be damaged and the fan may be damaged.

In particular, when the fan is driven by battery power, there is a problem in that power stored in the battery may be rapidly reduced. Accordingly, there is a problem that the driving time is shortened and the life of the battery may be shortened.

In order to solve the above problems, an object of the present embodiment is to provide an air purifier and a control method for determining a fan lock state more quickly and taking corresponding measures.

In particular, it is possible to provide an air purifier and a control method for determining a fan lock state through the power value of the battery when driven by battery power.

In addition, it is possible to provide an air purifier and a control method for determining whether a device driven by the power of the battery is normally operated or whether the battery is normally operated or connected through the power value of the battery.

The air purifier according to the present embodiment includes a first blower, a second blower provided above the first blower, a flow conversion device movably provided above the second blower, and the first blower. device, a battery that supplies power to at least one of the second blower and the flow converter, and driving at least one of the first blower, the second blower and the flow converter with power from the battery A control unit is included.

At this time, the battery includes a relay unit for opening and closing the input or output current of the battery and a current sensing unit for measuring a current value input or output from the battery, and the current value measured by the current sensing unit is within a normal range. If not applicable, the relay unit cuts off the current of the battery.

In addition, a first fan provided in the first blower device and driven by a first fan motor, a second fan provided in the second blower device and driven by a second fan motor, and provided in the flow conversion device, A third fan driven by a third fan motor is further included, and the amount of change in the battery output current value when at least one of the first fan, the second fan, and the third fan is driven by power of the battery When the value is greater than or equal to a predetermined value, the control unit determines that at least one of the first fan, the second fan, and the third fan is in a fan lock state, and the relay unit cuts off the current of the battery. can make it

In addition, the first discharge part formed on the upper part of the first blower device and the second discharge part formed on the upper part of the flow conversion device are exposed to the outside by the second discharge part and are driven by a third fan motor. A third fan installed in the flow conversion device is further included, and when the third fan is driven by the power of the battery, when the amount of change in the battery output current value is equal to or greater than a predetermined value, the control unit determines whether the third fan is a fan. Upon determining that the fan is in a locked state, the relay unit may cut off current from the battery output to the third fan motor.

In addition, in the flow converter, a first gear provided for movement of the flow converter in a first direction and driven by a first gear motor and movement in a second direction different from the first direction of the flow converter provided for, and includes a second gear driven by a second gear motor, and when the flow switching device is moved by the power of the battery, when the amount of change in the battery output current value is greater than or equal to a predetermined value, the control unit When it is determined that the current conversion device is in a fixed state, the relay unit may cut off the current of the battery output to the first gear motor or the second gear motor.

On the other hand, in the control method of an air purifier according to the spirit of the present invention, in the control method of an air purifier having a battery and a plurality of devices driven by the power of the battery, the air purifier is turned on, and the power of the battery is output , The power value output from the battery is measured, a device driven by the battery among the plurality of devices is identified, and the measured power value is the power value output when the device driven by the battery is normally operated. It is determined whether it is within a range (normal range), and when the measured power value is not within the normal range, the power of the battery is cut off.

In particular, when the third fan is driven by the battery and the amount of change in the measured power value is greater than or equal to a predetermined value, power of the battery output to the third fan may be cut off.

In addition, when the flow switching device is moved by the battery, when the amount of change in the measured power value is greater than or equal to a predetermined value, power of the battery output to the flow switching device may be cut off.

According to this embodiment, there is an advantage in that the battery and other devices can be protected by detecting the fan lock state relatively simply and quickly using the current value of the battery.

In particular, since the risk of fan lock is greatest for the fan provided in the flow conversion device located at the top, when the current value of the battery is abnormal, the power output to the corresponding fan can be cut off. Accordingly, there is an advantage in that the air can be cleaned by driving another fan even in the fan lock state.

In addition, there is an advantage in that it is possible to determine whether the driven device is normally operated by using the current value of the battery.

In addition, there is an advantage in that it is possible to determine whether the battery is normally operated or connected to another device using the current value of the battery.

In addition, there is an advantage in that the battery can be effectively used by using the external power when connected to the external power and using the battery only when separated from the external power.

In addition, there is an advantage in that the battery can be charged when the external power is connected, and whether or not the battery is normally charged can be determined through the amount of current of the battery.

In addition, there is an advantage in that the blowing capacity of the air purifier can be improved by providing a plurality of blowing devices and flow conversion devices.

In addition, since the filter member is provided in a cylindrical shape, since air can be introduced into the filter member from all directions outside the filter member, the suction area can be increased, and thus the air cleaning ability of the filter can be improved. there is

1 is a view showing the appearance of an air purifier according to an embodiment of the present invention.
2 is a diagram showing the internal configuration of an air purifier according to an embodiment of the present invention.
FIG. 3 is a view showing a cross section cut along line II′ of FIG. 2 .
4 is an exploded view showing the configuration of a second blower according to an embodiment of the present invention.
5 is a view showing a second discharge guide device, a third air guide device, and a flow conversion device according to an embodiment of the present invention.
6 and 7 are diagrams illustrating a guide mechanism of a flow conversion device according to an embodiment of the present invention.
8 and 9 are diagrams illustrating a display device according to an embodiment of the present invention.
10 and 11 are diagrams illustrating air flow in an air purifier according to an embodiment of the present invention.
12 is a diagram showing a control configuration of an air purifier according to an embodiment of the present invention.
13 is a diagram illustrating a control flow of an air purifier according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the embodiments of the present invention, specific related known configurations or functions

If it is determined that the description hinders the understanding of the embodiments of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element may be directly connected or connected to the other element, but there may be another element between the elements. It should be understood that may be "connected", "coupled" or "connected".

[External configuration of air purifier]

1 is a view showing the appearance of an air purifier according to an embodiment of the present invention.

Referring to FIG. 1 , an air purifier 10 according to an embodiment of the present invention includes a blower 100 or 200 generating an air flow and a discharge direction of the air flow generated by the blower device 100 or 200. A flow diverter 300 for converting is included. As shown in FIG. 1, the air purifier 10 is generally provided in a cylindrical shape.

{Blower}

The blowing devices 100 and 200 include a first blowing device 100 generating a first air flow and a second blowing device 200 generating a second air flow.

The first blower 100 and the second blower 200 may be arranged in a vertical direction. For example, the second blower 200 may be disposed above the first blower 100 . In this case, the first air flow forms a flow that sucks indoor air existing on the lower side of the air purifier 10, and the second air flow exists on the upper side of the air purifier 10. It forms a flow that sucks in the indoor air.

The air purifier 10 includes cases 101 and 201 forming an external appearance.

In detail, the cases 101 and 201 include a first case 101 forming an external appearance of the first blower 100 . The first case 101 may have a cylindrical shape. And, the upper part of the first case 101 may be configured to have a smaller diameter than the lower part. That is, the first case 101 may have a conical shape with a truncated end.

The first case 101 includes a first separator 101a in which two parts constituting the first case 101 are coupled or separated. And, the first case 101 further includes a hinge part (not shown) provided on the opposite side of the first separating part 101a. The two parts may relatively rotate about the hinge part.

When at least one of the two parts rotates, the first case 101 is opened and can be separated from the air purifier 10 . A locking device (not shown) may be provided at a portion where the two parts are coupled, that is, on the opposite side of the hinge portion. The locking device may include a locking protrusion or a magnet member. By opening the first case 101, internal parts of the first blower 100 may be replaced or repaired.

In the first case 101, a first suction part 102 through which air is sucked is formed. The first suction part 102 includes a through hole formed by penetrating at least a portion of the first case 101 . The first suction part 102 is formed in plurality.

The plurality of first intake parts 102 are evenly formed in the circumferential direction along the outer circumferential surface of the first case 101 so that air can be sucked in from any direction with respect to the first case 101 . That is, based on the center line in the vertical direction passing through the inner center of the first case 101, air may be sucked in in a direction of 360 degrees.

As described above, since the first case 101 is formed in a cylindrical shape and a plurality of first suction parts 102 are formed along the outer circumferential surface of the first case 101, the intake amount of air can be increased. Also, by avoiding a hexahedral shape having a corner portion, like a case of a conventional air purifier, flow resistance to intake air can be reduced.

Hereinafter, for convenience of description, directions are defined. Referring to FIG. 1 , the vertical direction is referred to as an axial direction, and the horizontal direction is referred to as a radial direction. The axial direction may correspond to the direction of the central axis of the first fan 160 and the second fan 260 to be described later, that is, the direction of the motor shaft provided in the fan. Also, the radial direction may be understood as a direction perpendicular to the axial direction.

Further, the circumferential direction is understood as a virtual circular direction formed when rotating with the axial direction as the center and the distance in the radial direction as the rotation radius.

In this case, the air sucked through the first suction part 102 may flow in a substantially radial direction from the outer circumferential surface of the first case 101 .

In addition, the first blower 100 further includes a base 20 provided on the lower side of the first case 101 . The base 20 is spaced downward from the lower end of the first case 101 and is positioned. And, in the separation space between the first case 101 and the base 20, a base suction part 103 is formed.

That is, the first blower 100 includes a plurality of suction units 102 and 103 . Air present in the lower part of the indoor space can be easily introduced into the first blower 100 through the plurality of suction units 102 and 103 . Thus, the intake amount of air can be increased.

A first discharge unit 105 is formed above the first blower 100 . Air discharged through the first discharge part 105 may flow upward in the axial direction.

In addition, the cases 101 and 201 include a second case 201 forming an external appearance of the second blower 200 . The second case 201 may have a cylindrical shape. And, the upper part of the second case 201 may be configured to have a smaller diameter than the lower part. That is, the second case 201 may have a conical shape with a truncated end.

The second case 201 includes two parts that can be separated or combined through the second separation part 201a and a hinge part. Like the first case 101, the second case 201 may be configured to be openable. For detailed description, the description of the first case 101 is used. By opening the second case 201, internal parts of the second blower 200 may be replaced or repaired.

The diameter of the lower end of the second case 201 may be smaller than the diameter of the upper end of the first case 101 . Therefore, in view of the overall shape of the cases 101 and 201, the lower cross-sectional area of the cases 101 and 201 is larger than the upper cross-sectional area. Accordingly, the air purifier 10 can be stably installed.

In the second case 201, a second suction part 202 through which air is sucked is formed. The second suction part 202 includes a through hole formed by penetrating at least a portion of the second case 201 . The second suction part 202 is formed in plurality.

The plurality of second suction parts 202 are evenly formed in the circumferential direction along the outer circumferential surface of the second case 201 so that air can be sucked in from any direction with respect to the second case 201 . That is, air can be sucked in in a direction of 360 degrees based on the center line in the vertical direction passing through the inner center of the second case 201 .

As described above, since the second case 201 is formed in a cylindrical shape and a plurality of second intake parts 202 are formed along the outer circumferential surface of the second case 201, the intake amount of air can be increased. In addition, by avoiding the hexahedral shape having a corner portion, as in the case of a conventional air purifier, there is an effect of reducing flow resistance to the intake air.

At this time, the air sucked through the second suction part 202 may flow in a substantially radial direction from the outer circumferential surface of the second case 201 .

{Fluid Inverter}

The flow conversion device 300 may be installed above the second blowing device 200 . The top of the flow conversion device 300 is provided in the form of a flat plate, and a second discharge part 305 is formed. That is, the second discharge part 305 is located at the top of the air purifier 10 to form the appearance of the air purifier 10 .

At this time, since the air purifier 10 is provided with the second discharge unit 305 together with the first discharge unit 105 of the first blower 100, the discharge air volume is improved and air is blown in various directions. The ejection effect appears.

Based on the air flow, the air passage of the second blower 200 may communicate with the air passage of the flow conversion device 300 . The air passing through the second blower 200 passes through the air passage of the flow conversion device 300 and may be discharged to the outside through the second discharge unit 305 .

The flow conversion device 300 may be movably provided. In detail, as shown in FIG. 1 , the flow diverter 300 may be in a lying state (first position) or in an inclined state (second position).

In addition, a display device 600 displaying operation information of the air purifier 10 is provided along with the second discharge unit 305 above the flow conversion device 300 . The display device 600 may move together with the flow conversion device 300 .

{compartment device}

In addition, the air purifier 10 includes a partitioning device 400 provided between the first blowing device 100 and the second blowing device 200 . By means of the partitioning device 400 , the second blowing device 200 may be positioned to be spaced apart from the first blowing device 100 above. A description related to the partitioning device 400 will be described later with reference to the drawings.

{battery}

In addition, the air purifier 10 according to the spirit of the present invention is prepared to be driven wired or wirelessly through a battery 700 or a power supply unit 520 (see FIG. 3). Accordingly, the air purifier 10 according to the spirit of the present invention further includes a battery 700.

As shown in FIG. 1 , the battery 700 may be disposed below the first blower 100 . That is, the battery 700 may be disposed at the lowermost part of the air purifier 10 . This is for the air purifier 10 to be stably installed on the ground. However, the arrangement of the battery 700 is exemplary and is not limited thereto.

In addition, the battery 700 may be detachably installed in the air purifier 10 . Accordingly, a structure for mounting the battery 700 may be further provided in the air purifier 10 .

In addition, the battery 700 may be provided in various forms. For example, it includes a plurality of battery cells accommodated in a predetermined case, and the battery cells may be rechargeable and dischargeable secondary batteries. Also, the battery 700 may include a lithium battery.

[Internal configuration of air purifier]

Hereinafter, each component of the air purifier 10 will be described in detail.

FIG. 2 is a view showing the internal configuration of an air purifier according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line II′ of FIG. 2 .

{First blower}

Referring to FIGS. 2 and 3 , the first blower 100 according to the embodiment of the present invention includes a base 20 and a suction grill 110 disposed above the base 20 . In addition, between the base 20 and the suction grill 110, a base suction portion 103 forming an air suction space is formed.

The suction grill 110 includes a substantially ring-shaped grill body 111 and a suction part 112 protruding upward from an outer circumferential surface of the grill body 111 . Due to the configuration of the grill body 111 and the suction part 112, the suction grill 110 may have a stepped configuration.

And, inside the suction part 112, a plurality of suction holes 112a are formed. The plurality of suction holes 112a may communicate with the base suction part 103 . That is, the air sucked into the base suction part 103 may flow upward through the suction part 112 of the suction grill 110 .

Air sucked through the plurality of suction holes 112a and the base suction part 103 may pass through the first flutter member 120 . The first filter member 120 has a cylindrical shape and may have a filter surface for filtering air. Air passing through the plurality of suction holes 112a may pass through an outer circumferential surface of the cylindrical first filter member 120 and be introduced into the inside.

In addition, the first blower 100 further includes a first filter frame 130 forming a mounting space for the first filter member 120 . In detail, the first filter frame 130 includes a first frame 131 forming a lower part of the first filter frame 130 and a second frame forming an upper part of the first filter frame 130 (132) is included. The first and second frames 131 and 132 may have a substantially ring shape.

The first filter frame 130 further includes a first filter support 135 extending upward from the first frame 131 toward the second frame 132 . A plurality of first filter supports 135 may be provided, and the plurality of first filter supports 135 may be arranged in a circumferential direction and connected to edge portions of the first and second frames 131 and 132.

The mounting space of the first filter member 120 is defined by the first and second frames 131 and 132 and the plurality of first filter supports 135 . Also, a first support cover 136 may be coupled to the outside of the first filter support 135 .

A first sensor device 137 may be installed in the first filter frame 130 . The first sensor device 137 may include a dust sensor for detecting the amount of dust in the air and a gas sensor for detecting the amount of gas in the air.

That is, the first sensor device 137 corresponds to a device for measuring the pollution level of the air flowing into the first blower device 100 . At this time, the dust sensor and the gas sensor may be disposed to be supported by the second frame 132 of the first filter frame 130 .

In the mounting space, the first filter member 120 may be detachably mounted. The first filter member 120 has a cylindrical shape, and air may be introduced through an outer circumferential surface of the first filter member 120 . In the process of passing through the first filter member 120, impurities such as fine dust in the air may be filtered out.

Since the first filter member 120 has a cylindrical shape, air can be introduced from any direction based on the first filter member 120 . Thus, the filtering area of air can be increased.

The mounting space may have a cylindrical shape corresponding to the shape of the first filter member 120 . During the mounting process, the first filter member 120 may be slidably introduced toward the mounting space. Conversely, the first filter member 120 may be slidably drawn out from the installation space during the separation process.

The first blower device 100 further includes a first fan housing 150 installed at an outlet side of the first filter member 120 . A housing space 152 in which the first fan 160 is accommodated is formed in the first fan housing 150 . Also, the first fan housing 150 may be supported by the first filter frame 130 .

In the lower part of the first fan housing 150, a first fan inlet 151 for guiding the inflow of air into the first fan housing 150 is included. A grill is provided at the first fan inlet 151 to prevent a user from inserting a finger or the like into the first fan housing 150 when the first filter member 120 is separated. there is.

In addition, the first blower 100 further includes a first ionizer 158 for removing or sterilizing odor particles in the air. The first ionizer 158 is coupled to the first fan housing 150 and can act on the air flowing inside the first fan housing 150 .

The first ionizer 158 is a type of NPI (Nano Plasma Ion) and generates sterilizing ions through a plasma reaction according to power input. That is, the first ionizer 158 discharges sterilizing ions into the air to eradicate airborne microorganisms such as bacteria in the air. Accordingly, unpleasant odors and the like contained in the air can be removed.

The sensor device and the ionizer may also be installed in a second blower 200 to be described later. Also, the sensor device and the ionizer may be installed in one of the first blower 100 and the second blower 200 .

The first fan 160 is placed above the first fan inlet 151 . For example, the first fan 160 includes a centrifugal fan that introduces air in an axial direction and discharges air upward in a radial direction.

In detail, the first fan 160 includes a first fan motor 165 which is a centrifugal fan motor, a hub 161 coupled to a rotating shaft 165a of the first fan motor 165, and the hub ( 161) and a shroud 162 disposed apart from each other, and a plurality of blades 163 disposed between the hub 161 and the shroud 162 are included. The first fan motor 165 may be coupled to an upper side of the first fan 160 .

The hub 161 may have a bowl shape in which a diameter decreases toward the bottom. And, the hub 161 includes a shaft coupling portion to which the rotary shaft 165a is coupled and a first blade coupling portion extending obliquely upward from the shaft coupling portion.

The shroud 162 includes a lower end at which a shroud inlet through which air passing through the first fan inlet 151 is sucked is formed, and a second blade coupling part extending upward from the lower end.

One surface of the blade 163 may be coupled to the first blade coupling portion of the hub 161, and the other surface may be coupled to the second blade coupling portion of the shroud 162. Also, the plurality of blades 163 may be spaced apart from each other in a circumferential direction of the hub 161 .

In addition, in the first blower 100, a first air guide device 170 coupled to the upper side of the first fan 160 to guide the flow of air passing through the first fan 160 is further provided. included

The first air guide device 170 includes an outer wall 171 having a cylindrical shape and an inner wall 172 positioned inside the outer wall 171 and having a cylindrical shape. The outer wall 171 is disposed to surround the inner wall 172 . A first air passage through which air flows is formed between the inner circumferential surface of the outer wall 171 and the outer circumferential surface of the inner wall 172 .

The first air guide device 170 includes a guide rib 175 disposed in the first air passage. The guide rib 175 extends from the outer circumferential surface of the inner wall 172 to the inner circumferential surface of the outer wall 171 . A plurality of guide ribs 175 may be spaced apart from each other. The plurality of guide ribs 175 perform a function of guiding the air introduced into the first air passage of the first air guide device 170 through the first fan 160 upward.

The guide rib 175 may obliquely extend upward from lower portions of the outer wall 171 and the inner wall 172 . For example, the guide ribs 175 are formed in a round shape to guide air to flow obliquely upward.

In addition, the first air guide device 170 further includes a first motor accommodating portion 173 extending downward from the inner wall 172 and accommodating the first fan motor 165 . The first motor accommodating part 173 may have a bowl shape whose diameter decreases toward the bottom. A shape of the first motor accommodating part 173 may correspond to a shape of the hub 161 . Also, the first motor accommodating part 173 may be inserted into the hub 161 .

The first fan motor 165 may be supported on the upper side of the first motor accommodating part 173 . Further, the rotational shaft 165a of the first fan motor 165 extends downward from the first fan motor 165 and passes through the bottom surface of the first motor accommodating part 173 so as to rotate the hub 161. It can be coupled to the shaft coupling part.

In addition, the first blower 100 is coupled to the upper side of the first air guide device 170 and guides the air passing through the first air guide device 170 to the first discharge guide device 190. A second air guide device 180 is further included.

The second air guide device 180 includes a first guide wall 181 having a substantially cylindrical shape, and a second guide wall positioned inside the first guide wall 181 and having a substantially cylindrical shape ( 182) are included. The first guide wall 181 may be disposed to surround the second guide wall 182 .

A second air passage through which air flows is formed between the inner circumferential surface of the first guide wall 181 and the outer circumferential surface of the second guide wall 182 . The air flowing through the first air passage of the first air guide device 170 passes through the second air passage and flows upward. The second air passage 185 may be referred to as a "discharge passage". Also, a first discharge unit 105 is disposed above the second air passage.

At this time, a first space portion accommodating at least a portion of the PCB device 500 to be described later is formed inside the second guide wall 182 having a cylindrical shape.

In addition, the first blower device 100 further includes a first discharge guide device 190 disposed above the second air guide device 180 . That is, the first discharge guide device 190 is disposed on the outlet side of the air flow passing through the second air guide device 180 based on the air flow path, and discharges air to the outside of the air purifier 10. guide

The first discharge guide device 190 is formed with the first discharge portion 105 through which air is discharged. That is, the first discharge guide device 190 forms the outer appearance of the upper end of the first blower device 100 .

{Second blower}

Hereinafter, the configuration of the second blower 200 will be described in detail with reference to an exploded view of the second blower shown in FIG. 4 .

4 is an exploded view showing the configuration of a second blower according to an embodiment of the present invention.

Referring to FIG. 4, the second blower 200 according to an embodiment of the present invention includes a lever support device 560, a lever device 242, a support device 240, a second filter member 220, a first 2 filter frames 230, a second fan housing 250 and a second fan 260 are included.

The second filter member 220 may have a cylindrical shape with an open top. The second filter member 220 includes a filter main body 221 having a cylindrical filter part with a hollow inside and a filter hole 222 formed by opening at an upper end of the filter main body 221.

A filter gripping part 221a is provided on the top or bottom of the filter body 221 . Air may flow into the filter body 221 through the outer circumferential surface of the filter body 221 and be discharged from the second filter member 220 through the filter hole 222 .

The lever support device 560 includes a lever support body 561 having an annular shape. The lever support body 561 extends from the inner circumferential surface toward the outer circumferential surface at a slight inclination upward with respect to the axial direction. That is, the surface constituting the lever support body 561 constitutes an inclined surface. The inclined surface is to provide a second space 458 where the user's hand can be placed.

On the other hand, the lever support body 561 blocks the air discharged through the first discharge part 105 of the first blower 100 from entering the second blower 200, It can also be called "blocking unit".

The lever support device 560 further includes a movement guide part 565 protruding upward from the lever support body 561 . A plurality of the moving guide parts 565 may be spaced apart from each other in the circumferential direction of the lever support body 561 . And, the lever support device 560 further includes a support protrusion 566 protruding upward from the inner circumferential surface of the lever support body 561 . The supporting jaw 566 supports the lever device 242 .

The lever device 242 may be provided to enable a user's manipulation. For example, the lever device 242 may be provided to be rotatable in a circumferential direction.

The lever device 242 includes a lever body 243 having a ring shape and rotatably provided. Also, the lever body 243 is formed with a plurality of cutouts 245 disposed at positions corresponding to the plurality of movement guide parts 565 . The plurality of cutouts 245 may be understood as through holes formed in the lever body 243 .

The plurality of cutouts 245 are spaced apart from each other and are arranged in the circumferential direction of the lever body 243 . In addition, each cutout 245 may be formed round to have a predetermined curvature in the circumferential direction corresponding to the curvature of the outer circumferential surface of the lever body 243 .

The lever device 242 is supported on the upper surface of the lever support body 561 . When the lever device 242 is supported by the lever support body 561, the plurality of movement guide parts 565 may be disposed to be inserted into the plurality of cutouts 245. In detail, the plurality of movement guide parts 565 may pass through the plurality of cutouts 245 and protrude upward from the plurality of cutouts 245 .

The length of each cutout 245 may be longer than the length of the movement guide part 565 . Accordingly, in a state in which the moving guide part 565 is inserted into the cutout part 245, the lever device 242 can be rotated. And, while the lever device 242 rotates in one direction, one end of the movement guide part 565 may interfere with one end of the cutout 245, and the movement in the process of rotating in the other direction. The other end of the guide part 565 may interfere with the other end of the cutout 245 .

In addition, the lever body 243 includes a second handle 244 provided on an outer circumferential surface of the lever body 243 .

Above the lever device 242, a support device 240 for supporting the second filter member 220 is provided. The support device 240 includes a first handle 241 coupled to the second handle 244 . The user can rotate the lever body 143 and the support device 140 clockwise or counterclockwise by gripping the first and second handles 241 and 244 .

The lever device 242 supports the lower surface of the support device 240 . The support device 240 may include a support protrusion (not shown) contacting the movement guide part 565 . The support protrusion protrudes downward from the lower surface of the support device 240 and may be provided at a position corresponding to the movement guide part 565 . Also, the shape of the support protrusion corresponds to the shape of the moving guide part 565, and includes an inclined surface formed to gradually protrude in a circumferential direction.

A direction in which the movement guide portion 565 is formed to gradually protrude and a direction in which the support protrusion is formed to gradually protrude may be opposite to each other. For example, if the direction in which the movement guide portion 565 gradually protrudes is a counterclockwise direction, the direction in which the support protrusion is gradually protruded may be a clockwise direction.

The support protrusion may be disposed at a position corresponding to the cutout 245 . That is, the movement guide part 565 and the support protrusion part may be disposed at a position where they are inserted into the cutout part 145 .

The lever device 242 and the support device 240 may rotate together. During this rotation process, the movement guide part 565 and the support protrusion may interfere. Specifically, when the lower part of the support protrusion and the upper part of the moving guide part 565 come into contact, the lever device 242 and the support device 240 are lifted upward. Also, the second filter member 220 supported by the support device 240 is disposed while being coupled to the second blower 200 while moving upward.

On the other hand, when the upper part of the support protrusion and the lower part of the movement guide part 565 come into contact or the interference between the support protrusion part and the movement guide part 565 is canceled, the lever device 242 and the support device 240 come downstairs Also, the second filter member 220 supported by the support device 240 is disposed in a detachable state (released state) from the second blower 200 .

The second blower 200 further includes a second filter frame 230 forming a mounting space for the second filter member 220 . In detail, the second filter frame 230 includes a third frame 231 forming the lower part of the first filter frame 230 and a fourth frame forming the upper part of the second filter frame 230. (232) is included.

The third frame 231 includes a frame recessed portion 231a having a downwardly recessed shape. The frame recessed portion 231a may be configured such that at least a portion of the third frame 231 is recessed. The frame depression 231a provides a space in which the first and second handles 241 and 244 can move.

The fourth frame 232 is spaced upward from the third frame 231 . The fourth frame 232 has a substantially ring shape. The ring-shaped inner space of the fourth frame 232 forms at least a portion of the air passage passing through the second filter frame 230 . Also, an upper portion of the fourth frame 232 may support the second fan housing 250 .

The second filter frame 230 further includes a second filter support 235 extending upward from the third frame 231 toward the fourth frame 232 . By the second filter support 235, the first and second frames 231 and 232 may be spaced apart from each other. A plurality of second filter supports 235 may be provided, and the plurality of second filter supports 235 may be arranged in a circumferential direction and connected to edge portions of the first and second frames 231 and 232.

An installation space for the second filter member 220 is defined by the first and second frames 231 and 232 and the plurality of second filter support parts 235 . Also, a second support cover 236 may be coupled to the outside of the second filter support 235 .

A second sensor device 237 may be installed in the second filter frame 230 . The second sensor device 237 may include a dust sensor 237a for detecting the amount of dust in the air and a gas sensor 237b for detecting the amount of gas in the air. That is, the second sensor device 237 corresponds to a device for measuring the pollution level of the air flowing into the second blower 200 .

The dust sensor 237a and the gas sensor 237b may be disposed to be supported by the fourth frame 232 . The description of the configuration of the second sensor device 237 may be applied to the first sensor device 137 as well.

In the mounting space, the second filter member 220 may be detachably mounted. The second filter member 220 has a cylindrical shape, and air may be introduced through an outer circumferential surface of the second filter member 220 . In the process of passing through the second filter member 220, impurities such as fine dust in the air may be filtered out.

Since the second filter member 220 has a cylindrical shape, air can be introduced from any direction based on the second filter member 220 . Thus, the filtering area of air can be increased.

The mounting space may have a cylindrical shape corresponding to the shape of the second filter member 220 . During the mounting process, the second filter member 220 may be slidably introduced toward the mounting space. Conversely, the second filter member 220 can be slidably drawn out from the installation space during the separation process.

In other words, when the first and second handles 241 and 244 are manipulated while the second filter member 220 is placed on the upper surface of the support device 240, the second filter member 220 moves downward. It is in the release position while moving. In addition, the second filter member 220 may slide outward in the radial direction and be separated from the mounting space.

On the other hand, while the second filter member 220 is separated from the mounting space, it slides radially inward toward the mounting space and is supported on the upper surface of the support device 240, and the first and second handles By the operation of (241, 244) can be in close contact upward. At this time, the first filter member 220 is in a coupled position to the first blower 200 .

In addition, the second fan housing 250 installed on the outlet side of the second filter member 220 is further included in the second blower 200 . A housing space 252 in which the second fan 260 is accommodated is formed in the second fan housing 250 . Since the second fan housing 250 and the second fan 260 have the same configuration as the first fan housing 150 and the first fan 160, the second fan housing 250 and the second fan 260 The description of the second fan 260 uses the description of the first fan housing 150 and the first fan 160.

In addition, the second blower 200 further includes a second ionizer 258 for removing or sterilizing odor particles in the air. The second ionizer 258 is coupled to the second fan housing 250 and can act on air flowing inside the second fan housing 250 . The second ionizer 258 may have the same configuration as the first ionizer of the first blower 100 .

Referring back to FIGS. 2 and 3 , the second blower 200 includes a third fan coupled to the upper side of the second fan 260 to guide the flow of air passing through the second fan 260 . An air guide device 270 is further included.

The third air guide device 270 includes an outer wall 271 forming an outer circumferential surface of the third air guide device 270 and is located inside the outer wall 271 and is located inside the third air guide device 270. An inner wall 272 defining the inner circumferential surface is included. A third air passage through which air flows is formed between the inner circumferential surface of the outer wall 271 and the outer circumferential surface of the inner wall 272 .

In addition, the third air guide device 270 includes a guide rib 275 disposed in the third air passage. The guide rib 275 extends from the outer circumferential surface of the inner wall 272 to the inner circumferential surface of the outer wall 271 . A plurality of guide ribs 275 may be spaced apart from each other. The plurality of guide ribs 275 perform a function of guiding the air introduced into the third air passage of the third air guide device 270 through the second fan 260 upward.

In addition, in the third air guide device 270, a second motor accommodating portion accommodating a second fan motor 265 extending downward from the inner wall 272 and providing a driving force to the second fan 260. (273) is further included. The second motor accommodating part 273 may have a bowl shape whose diameter decreases toward the bottom.

In addition, in the second blower device 200, a second discharge guide device is installed above the third air guide device 270 and guides the flow of air passing through the third air guide device 270. 280 is provided.

The second discharge guide device 280 may have a substantially annular shape. The second discharge guide device 280 may form a fourth air passage through which air flows through the third air guide device 270, that is, a discharge passage.

{Fluid Inverter}

The flow conversion device 300 can be rotated in the left and right directions. Here, rotation in the "left and right direction" may mean rotation in a clockwise or counterclockwise direction based on an up and down direction. At this time, the third air guide device 270 and the second discharge guide device 280 are provided to guide the movement of the flow switching device 300 .

Hereinafter, the configuration of the flow conversion device 300 will be described in detail with reference to FIGS. 5 and 7 .

5 is a view showing a second discharge guide device, a third air guide device, and a flow conversion device according to an embodiment of the present invention, and FIGS. 6 and 7 are views of a flow conversion device according to an embodiment of the present invention. It is a drawing showing the guide mechanism.

Referring to FIG. 5 , the third air guide device 270 includes guide devices 276 and 277 for guiding the motion of the flow conversion device 300 . The guide devices 276 and 277 include a first rack 276 and an axis guide groove 277 provided in the second motor accommodating part 273 .

The first rack 276 is understood as a configuration for guiding rotation of the flow changer 300 in the left and right directions by interlocking with the first gear 360 of the flow changer 300 . The first rack 276 is provided on an inner circumferential surface of the second motor accommodating part 273 and may extend in a circumferential direction according to a set curvature. In addition, the length of the first rack 276 may be set based on the distance interlocked with the first gear 360 .

Therefore, the flow conversion device 300 can be rotated in the left and right directions. Here, rotation in the "left and right direction" may mean rotation in a clockwise or counterclockwise direction based on an up and down direction. In this process, the first gear 360 may rotate with a predetermined rotation radius around the rotation shaft 354 of the flow conversion device 300.

The axis guide groove 277 is understood as a configuration extending roundly with a predetermined curvature as a groove for guiding rotation of the first gear 360 . For example, the shaft guide groove 277 may be formed to be rounded in a circumferential direction. That is, the shaft guide groove 277 may have a circular arc shape.

The first gear shaft 362 of the first gear 360 may be inserted into the shaft guide groove 277 . While the first gear 360 rotates, the first gear shaft 362 may move along the shaft guide groove 277 .

In addition, the second discharge guide device 280 includes a rotation guide plate 283 extending from the inner circumferential surface toward the inner center.

The rotation guide plate 283 includes a shaft insert 284 providing a center of rotation of the flow conversion device 300 in the left and right directions. The rotation shaft 354 may be inserted into the shaft insertion part 284 . The shaft insertion part 284 may be located at the inner center of the second discharge guide device 280 . The rotation guide plate 283 may also be understood as a support plate for supporting the shaft insertion part 284 .

The rotation guide plate 283 further includes a bearing groove 285. A first bearing 353 provided in the flow conversion device 300 may be inserted into the bearing groove 285 . The bearing groove 285 is understood as a configuration extending roundly with a set curvature as a groove guiding the movement of the first bearing 353 . For example, the bearing groove 285 may be formed to be rounded in a circumferential direction. That is, the bearing groove 285 may have a circular arc shape.

During the left-right rotation of the flow diverter 300, the first bearing 353 is inserted into the bearing groove 285 and can move, and thus the flow diverter 300 rotates. friction can be reduced.

The flow conversion device 300 includes a third fan housing 310 in which a third fan 330 is accommodated. The third fan housing 310 has a substantially annular shape. In detail, the third fan housing 310 includes a housing cover 312 forming an exterior.

Inside the housing cover 312, a housing body 311 having an annular shape is provided. That is, the housing cover 312 may be coupled to the outer circumferential surface of the housing body 311 and supported by the housing body 311 .

For convenience of description, it is only classified as first, second, and third, and the order is irrelevant. Also, the first fan 160 and the second fan 260 may be referred to as "main fans" and the third fan 330 may be referred to as "sub fan". In other words, the first and second fans 160 and 260 may be referred to as "blowing fans" and the third fan 330 may be referred to as "flow conversion fan".

The third fan 330 may include an axial flow fan. In detail, the third fan 330 may be operated to discharge air introduced in the axial direction in the axial direction.

Also, as shown in FIG. 6 , the third fan 330 is exposed to the outside through the second discharge part 305 . At this time, being exposed to the outside means a state in which predetermined foreign substances can be injected through the second discharge part 305, and means that the third fan 330 is disposed outside the air purifier 10. It is not.

The third fan 330 includes a hub having a shaft coupling part to which the rotary shaft 336 of the third fan motor 335, which is an axial flow fan motor, is coupled, and a plurality of blades coupled to the hub in a circumferential direction. The third fan motor 335 is coupled to the lower side of the third fan 330 and may be disposed inside the third motor housing 337 .

In this case, the first fan motor 165 , the second fan motor 265 , and the third fan motor 335 may be arranged in a line based on the vertical direction of the air purifier 10 .

The housing body 311 includes a cover support portion 311a protruding from an outer circumferential surface of the housing body 311 and supporting the inside of the housing cover 312 . The cover support portion 311a has a bent shape, and an outer surface of the cover support portion 311a may be coupled to an inner surface of the housing cover 312 .

The housing cover 312 is disposed to surround the housing body 311, and the housing body 311 and the housing cover 312 can be rotated or moved together. The third fan 330 is accommodated inside the housing body 311 . In addition, a housing passage 314 through which air flows by driving the third fan 330 is formed in the inner space of the housing body 311 . Blades of the third fan 330 may be positioned in the housing passage 314 .

By rotation of the third fan 330 , air may flow upward through the housing passage 314 . The housing passage 314 may extend from a space where the blade is located to a space above the blade.

A first discharge grill 315 forming a second discharge portion 305 through which air passing through the third fan 330 is discharged is provided on the upper side of the third fan housing 310 . The first discharge grill 315 has a shape that is recessed in an approximate central portion of the first discharge grill 315 . At this time, the display device 600 may be installed in the recessed central portion.

The second discharge part 305 may be formed above the housing passage 314 . Thus, the air passing through the housing passage 314 may be discharged to the outside of the air purifier 10 via the second discharge part 305 .

That is, the air flowing upward toward the third fan 330 through the second fan 260, the third air guide device 270, and the second discharge guide device 280 is In 330, it may be discharged to the outside through the second discharge part 305 located on the upper side of the third fan 330.

In the flow conversion device 300, a flow guide unit coupled to the lower side of the third fan housing 310 and guiding the air that has passed through the second discharge guide device 280 to the third fan housing 310 ( 320) is further included. The flow guide part 320 includes an inlet grill 325 for guiding air inflow into the third fan housing 310 . The inlet grill 325 may have a downwardly concave shape.

And, the second discharge guide device 280 is provided with a second discharge grill 288 corresponding to the shape of the inlet grill 325 . The inlet grill 325 may be seated on the upper side of the second discharge grill 288 . Accordingly, the inlet grill 325 can be stably supported by the second discharge grill 288 .

In the flow diverter 300, a rotation guide device 350 is installed below the flow guide part 320 to guide rotation in the left and right directions and up and down directions of the flow diverter 300. more included Rotation in the left and right directions may mean clockwise or counterclockwise rotation with respect to the axial direction. Rotation in the left-right direction may be referred to as "first-direction rotation", and rotation in the up-down direction may be referred to as "second-direction rotation".

The rotation guide device 350 includes a guide body 351 coupled to the flow guide part 320 . In addition, the rotation guide device 350 includes a first guide mechanism for guiding rotation of the flow conversion device 300 in a first direction and a second guide mechanism for guiding rotation of the flow conversion device 300 in a second direction. A guide mechanism is included.

At this time, the first guide mechanism is disposed on one side of the guide body 251, and the second guide mechanism is disposed on the other side of the guide body 251. Hereinafter, a form in which the first guide mechanism is disposed below the guide body 251 and the second guide mechanism is disposed above the guide body 251 will be described.

Referring to FIG. 6 , the first guide mechanism includes a first gear motor 363 generating a driving force and a first gear 360 coupled to the first gear motor 363 and rotatable. For example, the first gear motor 363 may include a step motor for easy rotation angle control. Also, the first gear motor 363 may include a motor capable of rotating in both directions.

The first gear 360 is coupled to the motor shaft 363a of the first gear motor 363 . The first guide mechanism includes a first gear shaft 362 extending downward from the first gear 360, that is, toward the third air guide device 270 or the second discharge guide device 280. more included

The first gear 360 is gear-coupled to the first rack 276 of the third air guide device 270. A plurality of gear teeth are formed on the first gear 360 and the first rack 276 . Also, when the first gear motor 363 is driven, the first gear 360 rotates and interlocks with the first rack 276 . At this time, since the third air guide device 270 is fixed, the first gear 360 may move along the first rack 276 .

Also, the shaft guide groove 277 of the third air guide device 270 may guide the movement of the first gear 360 . In detail, the first gear shaft 362 may be inserted into the shaft guide groove 277 . Also, the first gear shaft 362 may move in a circumferential direction along the shaft guide groove 277 while the first gear 360 rotates.

The first guide mechanism further includes a rotation shaft 354 constituting a rotation center of the flow conversion device 300 . The first gear 360 and the first gear shaft 362 may be rotated with a rotation radius set around the rotation axis 354 . At this time, the set rotation radius is referred to as a "first rotation radius".

The first rack 276 and the shaft guide groove 277 may be formed with a length corresponding to a rotation amount or rotation angle of the flow conversion device 300 . In detail, the circumferential length of the first rack 276 and the shaft guide groove 277 may be slightly larger than the circumferential distance around which the flow conversion device 300 rotates. Through this, it is possible to prevent the first gear 360 from being separated from the first rack 276 while moving. Also, while the first gear shaft 362 is moving, interference with the end of the shaft guide groove 277 can be prevented.

The rotating shaft 354 may be provided on a lower surface of the guide body 251 . In detail, the rotating shaft 354 may protrude downward from the lower surface of the guide body 251 . The rotating shaft 354 is inserted into the shaft insertion part 284 of the second discharge guide device 280 and can be rotated within the shaft insertion part 284 .

That is, when the first gear 360 rotates, the first gear shaft 362 and the first gear 360 rotate around the rotating shaft 354 in a circumferential direction. And, the rotating shaft 354 rotates within the shaft insertion part 284 . Therefore, the flow conversion device 300 can be rotated in the first direction, that is, clockwise or counterclockwise, with the longitudinal direction as the axial direction.

Referring to FIG. 7 , the second guide mechanism includes a fixed guide member 352 fixed to the guide body 351 . The central axis 354 may be provided on a lower surface of the fixing guide member 352 .

The fixed guide member 352 includes a first guide surface 352a supporting the lower side of the rotation guide member 370 and guiding rotation of the rotation guide member 370 in the second direction. The first guide surface 352a forms at least a portion of the upper surface of the fixed guide member 352, and may extend roundly upward in correspondence with the rotation path of the rotation guide member 370.

In the fixed guide member 352, a first guide bearing 359 is provided to be in contact with the rotation guide member 370 and can reduce frictional force generated during rotation of the rotation guide member 370. more included The first guide bearing 359 may be located on a side of the first guide surface 352a.

The fixed guide member 352 further includes a second gear insertion portion 352b into which a second gear 365 can be inserted to rotate the rotation guide member 370 . The second gear insertion part 352b is formed on one side of the first guide surface 352a. For example, the second gear insertion portion 352b may be formed by cutting at least a portion of the first guide surface 352a.

At least a portion of the second gear 365 may pass through the second gear insertion portion 352b and protrude upward from the second gear insertion portion 352b.

The second guide mechanism further includes a second gear motor 367 coupled to the second gear 365 to provide a driving force. For example, the second gear motor 367 may include a step motor. Also, the second gear motor 367 may include a motor capable of rotating in both directions.

The second guide mechanism further includes a second gear shaft 366 extending from the second gear motor 367 to the second gear 365 . The second gear shaft 366 may protrude to the side of the second gear motor 367 . When the second gear motor 367 is driven, the second gear shaft 366 and the second gear 365 may rotate together.

The second guide mechanism further includes a rotation guide member 370 disposed above the fixed guide member 352 and rotatably provided in the vertical direction. The rotation guide member 370 may be coupled to a lower side of the flow guide part 320 .

In detail, the rotation guide member 370 includes a body portion 371 supported by the fixed guide member 352 . Also, the body part 371 includes a second guide surface 372 moving along the first guide surface 352a. The second guide surface 372 may be formed to be rounded downward corresponding to the curvature of the first guide surface 352a.

In the rotation guide member 370, a second guide bearing 375 is provided to be in contact with the fixed guide member 352 and can reduce frictional force generated during rotation of the rotation guide member 370. more included The second guide bearing 375 is located on the side of the second guide surface 372 and can move along the first guide surface 352a while the rotation guide member 370 rotates.

The rotation guide member 370 further includes a second rack 374 interlocking with the second gear 365 . A plurality of gear teeth are formed in the second gear 365 and the second rack 374, and the second gear 365 and the second rack 374 are gear-coupled through the plurality of gear teeth. can

When the second gear motor 367 is driven, the second gear 365 and the second rack 374 interlock, so that the rotation guide member 370 rotates in the vertical direction. there is. Therefore, according to the motion of the rotation guide member 370, the flow conversion device 300 may perform rotation in the second direction.

{compartment device}

Referring back to FIGS. 2 and 3 , the partition device 400 separates or blocks the air flow generated from the first blower 100 and the air flow generated from the second blower 200 . A partition plate 430 is included to do so. By the partition plate 430, the first and second blowers 100 and 200 may be spaced apart from each other in the vertical direction.

That is, a separation space where the partition plate 430 is located is formed between the first and second blowers 100 and 200 . The first discharge guide device 190 of the first blower 100 is located at the lower end of the separation space, and the lever support device 560 of the second blower 200 is located at the upper end of the separation space. It can be.

The separation space may be partitioned into an upper space and a lower space by the partition plate 430 . The lower space is understood as a first space 448 through which the air discharged from the first discharge part 105 of the first discharge guide device 190 passes through the process of flowing to the outside of the air purifier 10. do. And, the upper space constitutes the second space portion 458 as a gripping space into which the user can insert his/her hand when moving the air purifier 10.

The air discharged from the first discharge unit 105 is guided by the partition plate 430 and flows out of the air purifier 10, and is prevented from flowing into the second blower 200. there is.

{display device}

As described above, the display device 600 displaying operation information of the air purifier 10 is provided above the flow conversion device 300 .

Hereinafter, with reference to FIGS. 8 and 9, the configuration of the flow conversion device 300 will be described in detail.

8 and 9 are diagrams illustrating a display device according to an embodiment of the present invention.

Referring to FIGS. 8 and 9 , the display device 600 may be installed in the discharge grill 315 . A recessed portion 318 having a downwardly recessed shape is provided at a substantially central portion of the discharge grill 315, and a plurality of grill units 315a may extend from the recessed portion 318 toward the outside in a radial direction. . Also, the display device 600 may be disposed above the recessed portion 318 .

The display device 600 includes a PCB assembly 601. The PCB assembly 601 has a display PCB 610 provided with a plurality of lighting sources 651 and 655 and coupled to an upper side of the display PCB 610 to transmit light emitted from the plurality of lighting sources 651. A reflector 620 for concentrating toward the display screen 602 is included.

In the plurality of lighting sources 651 and 655, a first lighting source 651 for displaying operation information of the air purifier 10 and an edge of the display screen 602 of the display device 600 are displayed. A second illumination source 655 is included.

The display screen 602 is a set area (hereinafter referred to as a display area) in which the information can be displayed and is formed on the upper surface of the display device 600 . Also, an edge of the display screen 602 may form a boundary of the display area.

The display PCB 610 is provided as a substantially circular plate. The first lighting source 651 may be installed on the front side of the display PCB 610, and the second lighting source 655 may be installed on the rear side of the display PCB 610.

The number of first lighting sources 651 may be provided to correspond to the shape of the content to be displayed. A plurality of second lighting sources 655 are provided, and the plurality of second lighting sources 655 may be disposed along an edge of a rear surface of the display PCB 610 . For example, the plurality of second illumination sources 655 may be arranged in a circular shape.

The reflector 620 includes a through hole 623 for concentrating the light emitted from the first illumination source 651 upward. The reflector 620 is made of an opaque material that restricts light transmission or is coated with the opaque material.

A reflector film may be provided above the reflector 620 . On the reflector film, the content of displayed information, that is, predetermined letters, numbers, or symbols, etc. may be displayed to implement predetermined information. For example, letters such as "smell", "dust", "fine dust", and "replace filter", 888 patterns capable of displaying numbers, and symbols indicating the intensity of airflow may be included.

At this time, various information may be displayed by on/off control of the plurality of first illumination sources 651 .

In addition, the display device 600 includes a diffusion plate 630 surrounding the outside of the PCB assembly 601 . The diffuser plate 630 may be understood as a component forming the edge portion 650 of the display screen 622 by diffusing the light emitted from the second illumination source 655 .

The diffusion plate 630 may be disposed along the edge of the depression 318 . In detail, in the diffusion plate 630, the plate body 631 disposed to surround the display PCB 610 and the second illumination source 655 protruding from the inner circumferential surface of the plate body 631 are installed. A light receiving unit 635 is included. The plate body 631 may have a ring shape and may be supported by the discharge grill 315 . Also, the plate body 631 and the light receiving portion 635 may be integrally formed.

The plate body 631 and the light receiving part 635 may be made of a translucent material capable of refraction or diffusion of light. For example, the plate body 631 and the light receiving part 635 may be made of an acrylic material.

The plate body 631 may form an edge portion 650 of the display screen 622 . In detail, the upper part of the plate body 631 may be exposed to the upper surface of the air purifier 10, and the light emitted from the second lighting source 655 may be exposed to the light receiving part 635. and diffuses through the plate body 631 . And, the diffused light may move to the upper part of the air purifier 10 and constitute the edge portion 650 .

Since the plate body 631 and the light receiving portion 635 are made of a translucent material, the edge portion 650 can be implemented with soft light. Accordingly, a comfortable display screen can be configured.

In addition, the display device 600 further includes a display cover 640 provided on the upper side of the PCB assembly 601 . The display cover 640 may be understood as a component for supporting the outside of the display PCB 610 and maintaining the cover film 645 flat. The display cover 640 may be made of an opaque material that prevents transmission of light.

A cover hole 641 having a shape corresponding to the reflector film is formed in the display cover 640 . Due to the configuration of the cover hole 641, even when the display cover 640 is coupled to the reflector 620, the reflector film may be exposed upward.

A cover film 645 is provided on the upper side of the display cover 640 . For example, the cover film 645 may be attached to an upper surface of the display cover 640 . The cover film 645 may be made of a translucent material in order to transmit only a part of the light transmitted from the PCB assembly 601 . For example, the translucent material may include acrylic or polymethyl methacrylate resin (PMMA). Since the cover film 645 is provided, it is possible to prevent information displayed through the display device 600 from being too dazzling.

The cover film 645 is provided with a film display unit 646 for displaying some operation information among a plurality of operation information of the air purifier 10 or inputting a predetermined command by the user.

Also, as shown in FIG. 9 , the display device 600 includes various input units. The input unit may be provided in a button or touch type recognized by a user's push. In addition, a predetermined signal may be input to the input unit using a remote signal device such as a remote controller.

A power input unit 660 for ON/OFF of the air purifier 10 is provided in the input unit. In addition, for user's convenience, an input unit for various functions such as wind speed and off reservation may be provided.

{Control Device}

The air purifier 10 according to the spirit of the present invention is provided with a control device 500. Referring back to FIGS. 2 and 3 , the control device 500 includes a power supply 520 and a main PCB 510 .

The power supply unit 520 is a device for receiving commercial power supplied from a power line connected to the air purifier 10 and supplying power to the main PCB 510 and multiple components in the air purifier 10. is understood as The power supply unit 520 may include a PCB (power PCB) for AC power.

In addition, the control device 500 further includes a PCB support plate 525 for supporting the power supply unit 520 and the main PCB 510 . The main PCB 510 may be supported on one surface of the PCB support plate 525 , and the power supply unit 520 may be supported on the other surface of the PCB support plate 525 .

In addition, the control device 500 includes a communication module 515 through which the air purifier 10 communicates with an external device. For example, the communication module 515 may include a Wi-Fi module. The communication module 515 is supported by the PCB support plate 525 and may be disposed below the main PCB 510 .

The main PCB 510 may include a PCB for DC power driven by the DC voltage converted from the PCB for AC power. At this time, the main PCB 510 may be understood as a 'control unit' for controlling various components provided in the air purifier 10 . Hereinafter, the main PCB 510 is referred to as a controller.

In addition, the control device 500 is provided with a configuration for controlling the battery 700 . For example, the battery 700 may be installed, used, and remaining capacity may be detected. In particular, the control device 500 may drive the air purifier 10 using the power of the battery 700 when commercial power is not applied from the power supply 520 .

Hereinafter, the flow of air and the movement of the flow conversion device when the air purifier 10 is driven based on the above configuration will be described.

[Operation of the air purifier]

10 and 11 are diagrams illustrating air flow in an air purifier according to an embodiment of the present invention.

Referring to FIGS. 10 and 11 , the flow of air according to the driving of the first blower 100 will be described. When the first fan 160 operates, indoor air is sucked into the first case 101 through the first suction part 102 and the base suction part 103 . Inhaled air passes through the first filter member 120, and in this process, foreign substances in the air may be filtered out. And, while the air passes through the first filter member 120, the air is sucked in the radial direction of the first filter member 120, filtered, and then flows upward.

The air passing through the first filter member 120 flows upward in the radial direction while passing through the first fan 160, and a stable upward flow occurs while passing through the first and second air guide devices 170 and 180. It is done. The air passing through the first and second air guide devices 170 and 180 passes through the first discharge guide device 190 and flows upward through the first discharge part 105 .

The air discharged through the first discharge part 105 is guided by the partition plate 430 located above the first discharge guide device 190 and discharged to the outside of the air purifier 10 .

Meanwhile, when the second fan 260 operates, indoor air is sucked into the second case 201 through the second suction part 202 . Inhaled air passes through the second filter member 220, and in this process, foreign substances in the air may be filtered out. And, while the air passes through the second filter member 220, the air is sucked in the radial direction of the second filter member 220, filtered, and then flows upward.

The air that has passed through the second filter member 220 flows upward in the radial direction while passing through the second fan 160, and passes through the third air guide device 270 and the second discharge guide device 280. Stable upward flow is achieved while passing through. Air passing through the third air guide device 270 and the second discharge guide device 280 may be discharged through the second discharge unit 305 via the flow conversion device 300 .

At this time, the flow conversion device 300 may be rotatably provided in the vertical direction by the second guide mechanism. For example, as shown in FIG. 10 , when the flow conversion device 300 is in the first position, the air discharged from the flow conversion device 300 flows upward.

On the other hand, as shown in FIG. 11 , when the flow conversion device 300 is in the second position, the air discharged from the flow conversion device 300 may flow forward and upward. Therefore, by the flow conversion device 300, the air volume of the air discharged from the air purifier 10 is increased, and there is an advantage in that purified air can be supplied to a location far from the air purifier 10. .

In detail, when the third fan 330 of the flow conversion device 300 is driven, at least some of the air discharged from the second discharge guide device 280 flows through the third fan housing 310. can enter the interior of Also, the introduced air may pass through the third fan 330 and be discharged to the outside through the second discharge part 305 .

In addition, the flow conversion device 300 can be rotated left and right by the first guide mechanism in the second position. According to this action, air can be discharged to both sides of the front of the air purifier 10, and thus an effect of providing air flow toward a relatively wide indoor space appears.

In addition, since the third fan 330 is provided in the flow conversion device 300, the blowing power of the discharged air can be increased.

Depending on the operation mode of the air purifier 10, the flow conversion device 300 may act selectively. For example, when the air purifier 10 is operated in the normal operation mode (first operation mode), as shown in FIG. 10 , the flow conversion device 300 is in the first position lying down. In addition, the first and second blowers 100 and 200 are driven so that a plurality of independent air currents can be formed.

On the other hand, when the air purifier 10 is operated in the flow conversion mode (second operation mode), as shown in FIG. 11 , the flow conversion device 300 is moved upward, and It may protrude from the upper end. For reference, the operation of the first and second blower devices 100 and 200 in the fluid conversion mode may be the same as the driving of the first and second blower devices 100 and 200 in the general operation mode.

In addition, the flow conversion device 300 may change the air flow of the air purifier 10 while rotating in each position.

Hereinafter, each configuration of the air purifier 10 controlled by the control unit 510 described above will be described.

[Control of air purifier]

12 is a diagram showing a control configuration of an air purifier according to an embodiment of the present invention.

As shown in FIG. 12, the air purifier 10 according to the spirit of the present invention includes a controller 510 for controlling various components. The description of each configuration refers to the above description, and only the configuration control by the control unit 510 is described.

The control unit 510 can turn on/off or control each component step by step. 12 shows only some components of the air purifier 10, and components controlled by the controller 510 are not limited thereto.

For example, the control unit 510 may control to turn on/off the first fan motor 165, the second fan motor 265, and the third fan motor 335, respectively, or to adjust RPM. there is. Accordingly, the first fan 160, the second fan 260, and the third fan 330 may be turned on/off or driven at a predetermined air volume. At this time, the first fan 160, the second fan 260, and the third fan 330 may be driven at various levels of air volume according to RPM control.

Also, the controller 510 may control the first gear motor 363 and the second gear motor 365 to drive the first gear 360 and the second gear 367 . That is, it can be controlled by moving or rotating the flow conversion device 300 up and down.

In addition, the control unit 510 may turn on/off the sensor devices 137 and 237, the ionizers 158 and 258, and the communication module 515, or adjust their steps. For example, the communication module 515 may be turned on only when there is a predetermined input signal, or the ionizers 158 and 258 may be turned on only when the air pollution level is relatively high.

In addition, the controller 510 may control the display PCB 610 to visualize predetermined information. For example, the controller 510 turns on both the first illumination source 651 and the second illumination source 655 to visualize predetermined information or turns on only the first illumination source 651 and relatively Information can be visualized in a dark state.

A signal input from the input unit may be transmitted to the control unit 510 . At this time, the input unit is provided so that various signals can be input, but only the power input unit 660 is shown for convenience of explanation. For example, the control unit 510 may turn on/off the air purifier 10 according to a signal transmitted from the power input unit 660 .

Since the signal transmitted from the input unit corresponds to the signal input by the user, it can be controlled with priority in general. In addition, the control unit 510 can turn on/off the air purifier 10 or operate it in a predetermined operation mode when a predetermined condition is met even without an input from the input unit.

In addition, a signal input from the power supply unit 520 may be transmitted to the control unit 510 . At this time, the power supply unit 520 may transmit information on coupling and separation with external power. When the power supply 520 notifies the separation from the external power, the controller 510 controls the air purifier 10 using the power of the battery 700 .

In detail, when external power is connected, power is supplied to various devices by the power supply unit 520 . In addition, the power of the battery 700 may be charged by the power supply unit 520 . In addition, when external power is disconnected, power is supplied to various devices by the battery 700 .

In addition, the power supply unit 520 may be omitted in the air purifier 10 according to the spirit of the present invention. Accordingly, power may be supplied by the battery 700 and the battery 700 may be charged and used. At this time, the battery 700 may be separately provided with a charging unit or a charging connection unit.

As shown in FIG. 12, the battery 700 includes a relay unit 710 for opening and closing the input or output current of the battery 700 and a current for measuring the current value input or output from the battery 700. A sensing unit 720 is included.

The relay unit 710 may electrically connect or disconnect the battery 700 and other devices. For example, the relay unit 710 may supply or cut off the power of the battery 700 to various devices. In addition, the relay unit 710 may be connected to or separated from an external device to charge the battery 700 .

The current sensing unit 720 may measure the amount of current according to the electrical connection of the battery 700 . For example, when various devices are driven by the power of the battery 700, the current sensing unit 720 can measure the consumption rate and remaining amount through the amount of current of the battery 700. Also, when the battery 700 is being charged, the current sensing unit 720 may measure the charging speed and the charging amount through the amount of current of the battery 700 .

At this time, when the current value measured by the current sensing unit 720 does not fall within the normal range, the relay unit 710 cuts off the current of the battery 700 . The normal range refers to a current value measured when various devices, the battery 700, and the like are normally operated and connected. In addition, cutting off the current of the battery 700 may be understood as cutting off an electrical connection between the battery 700 and other devices.

For example, when the battery 700 does not operate normally, the current value may not fall within the normal range. In addition, when various devices are operated by the battery 700, current values may not fall within the normal range when various devices are not normally operated.

As described above, the air purifier 10 according to the spirit of the present invention includes the first fan 160, the second fan 260, and the third fan 330. At this time, in the case of a fan lock state in which the fans are not normally driven, the current value does not fall within the normal range.

In detail, the current value rises rapidly, and the change amount of the current value changes greatly. Accordingly, when the amount of change in the battery output current value is equal to or greater than a predetermined value, it may be determined that the fan lock state corresponds to the state. Accordingly, it is determined that at least one of the first fan 160, the second fan 260, and the third fan 330 driven by the battery 700 is in a fan lock state, , The relay unit 710 cuts off the current of the battery 700 .

In addition, in terms of the shape of the air purifier 10 according to the spirit of the present invention, the possibility that the third fan 330 becomes a fan lock is very high. 1 and 3, the first fan 160 and the second fan 260 are located inside the air purifier 10, and the first discharge part 105 into which foreign substances may enter Alternatively, it is disposed relatively far from the second discharge port 305.

On the other hand, since the third fan 330 is disposed adjacent to the second discharge port 305, the possibility of introducing foreign substances through the second discharge port 305 is relatively high. Accordingly, when the occurrence of a fan lock is detected during driving of the third fan 330 , only power output to the third fan motor 335 may be cut off. In addition, it is determined that the foreign matter is injected into the second discharge port 305 and the foreign matter to be removed from the second discharge portion 305 may be displayed on the display unit 600 .

At this time, even if the occurrence of fan lock is detected, the first fan 160 and the second fan 260 may be operated as they are to continue cleaning the air. That is, if a fan lock is detected during driving of the third fan 330 regardless of driving of the first fan 160 and the second fan 260, only the third fan 330 can be stopped. .

In addition, as described above, the flow conversion device 300 according to the spirit of the present invention is installed to be movable. At this time, if a foreign substance is introduced into the flow diverter 300 or an obstacle exists around the air purifier 10, the flow diverter 300 may not move normally.

Therefore, when the flow switching device 300 is moved by the power of the battery 700, when the amount of change in the output current value of the battery 700 is equal to or greater than a predetermined value, the control unit 510 controls the flow switching device ( 300) is determined to be in a fixed state. At this time, the fixed state can be understood as a state in which the flow conversion device 300 is not normally driven as well as a state in which it cannot be completely moved.

Accordingly, the relay unit 710 blocks the current of the battery 700 output to the first gear motor 363 or the second gear motor 365 moving the flow conversion device 300. can In addition, it is possible to display on the display unit 600 that the flow conversion device 300 is in a fixed state.

Also, when the battery 700 is charged by an external power source, the measured power value may not be included in the range of power values input when normally charged. At this time, the relay unit 710 may cut off power input to the battery 700 . In addition, the charging failure of the battery 700 may be displayed on the display unit 600 .

Hereinafter, an embodiment described in FIG. 13 will be described with reference to FIG. 12 .

13 is a diagram illustrating a control flow of an air purifier according to an embodiment of the present invention.

As shown in FIG. 13, the air purifier 10 is turned on (S10). At this time, a power signal may be input from the power input unit 660 by the user. In addition, when the pollution level of the space in which the air purifier 10 is installed is measured and reaches a predetermined level, the air purifier 10 may be turned on without input of power by the user.

When the air purifier 10 is turned on, the battery 700 is electrically connected to various devices provided in the air purifier 10 (S20). It can be understood that this is performed by the relay unit 710 and the battery 700 is relay-on.

In addition, when the power supply unit 520 is provided, whether or not the power supply unit 520 is connected to an external power source may first be determined. Hereinafter, a case in which the power supply unit 520 is not present or is not connected to an external power source will be described.

The battery 700 is Relay-ON, and the current value of the battery 700 is measured by the current sensing unit 720 (S30). In detail, it corresponds to the current value output from the battery 700 to various devices.

Also, a device driven by the battery 700 is checked (S40). As described above, the air purifier 10 is provided with various devices, and not all devices are always used. For example, the flow conversion device 300 may not be used, and only the first and second blowers 100 and 200 may be used.

At this time, when the device used is normally operated, the current value consumed, that is, the current value in the normal range is calculated (S50). For example, when the flow conversion device 300 is not used and only the first and second blowers 100 and 200 are used, the current value may be relatively small. This may be provided differently according to design, and information about this is stored in the controller 510.

Then, it is determined whether the current value measured by the battery 700 is included in the current value of the normal range (S60). If included, the current value output from the battery 700 and the driven device are continuously monitored. If not included, the battery 700 is electrically separated from various devices provided in the air purifier 10 (S70). It can be understood that this is performed by the relay unit 710 and the battery 700 is relayed-off.

In addition, when a device in question is identified, the battery 700 may be relayed-off only for that device. In this way, it is possible to determine whether various devices are normally operated or whether the battery 700 is normally operated or connected through the amount of current of the battery 700 .

10: air purifier 100: first blower
200: second blower 300: fluid conversion device
400: compartment device 500: control device
510: control unit 520: power supply unit
600: display device 700: battery
710: relay unit 720: current sensing unit

Claims (15)

a first blower;
a second blower provided above the first blower;
a flow conversion device movably provided above the second blower; and
a battery supplying power to at least one of the first blower device, the second blower device, and the flow conversion device; and
A controller for driving at least one of the first blower, the second blower, and the flow conversion device with power from the battery; included,
In the fluid conversion device,
A first gear provided for movement of the flow conversion device; And a second gear; is included,
In the battery,
a relay unit for opening and closing the input or output current of the battery; and
A current sensing unit for measuring a current value input or output from the battery; is included,
When at least one of the first blower and the second blower is driven by the power of the battery, when the change in the output current value of the battery is greater than or equal to a predetermined value,
Air purifier, characterized in that for controlling the relay unit to cut off the current of the battery. According to claim 1,
a first fan provided in the first blower and driven by a first fan motor;
a second fan provided in the second blower and driven by a second fan motor; and
A third fan provided in the flow conversion device and driven by a third fan motor; is further included,
When at least one of the first fan, the second fan, and the third fan is driven by the power of the battery, when the amount of change in the output current value of the battery is greater than or equal to a predetermined value,
The control unit determines that at least one of the first fan, the second fan, and the third fan being driven is in a fan lock state, and the relay unit cuts off the current of the battery. purifier. According to claim 2,
When at least one of the first fan and the second fan and the third fan are driven by the power of the battery, when the amount of change in the output current value of the battery is greater than or equal to a predetermined value,
The air purifier, characterized in that the control unit determines that the third fan is in a fan lock state, and the relay unit cuts off the current of the battery output to the third fan motor. According to claim 1,
a first discharge part formed above the first blower and a second discharge part formed above the flow conversion device; and
The air purifier further includes a third fan exposed to the outside by the second discharge unit and installed in the flow conversion device to be driven by a third fan motor. According to claim 4,
When the third fan is driven by the battery power, when the amount of change in the battery output current value is greater than or equal to a predetermined value,
The air purifier, characterized in that the control unit determines that the third fan is in a fan lock state, and the relay unit cuts off the current of the battery output to the third fan motor. According to claim 4,
The air purifier, characterized in that the upper portion of the flow conversion device is provided in the form of a flat plate, and a display unit for displaying predetermined operation information together with the second discharge unit is provided. According to claim 6,
When the third fan is driven by the battery power, when the amount of change in the battery output current value is greater than or equal to a predetermined value,
The air purifier, characterized in that the control unit determines that foreign substances are introduced into the second discharge unit and displays on the display unit to remove foreign substances from the second discharge unit. According to claim 1,
In the fluid conversion device,
The first gear is driven by a first gear motor and is provided for movement of the flow conversion device in a first direction,
The second gear is driven by a second gear motor and is provided for movement in a second direction different from the first direction of the flow conversion device,
When the flow conversion device is moved by the power of the battery, when the amount of change in the battery output current value is greater than or equal to a predetermined value,
The air purifier, characterized in that the control unit determines that the flow conversion device is in a fixed state, and the relay unit cuts off the current of the battery output to the first gear motor or the second gear motor. According to claim 1,
A power supply connected to an external power source is further included,
The control unit drives at least one of the first blowing device, the second blowing device and the flow conversion device by the power supply unit when the external power source is connected, and charges the battery. purifier. In the control method of an air purifier having a battery and a plurality of devices driven by power of the battery,
The air purifier is turned on,
The power of the battery is output,
A power value output from the battery is measured,
Identifying a device driven by the battery among the plurality of devices;
Determine whether the measured power value is included in the range (normal range) of the power value output when the device driven by the battery is normally operated;
When the measured power value is not included in the normal range, the power of the battery is cut off;
The plurality of devices include a flow conversion device provided to be movable by the power of the battery,
When the flow conversion device is moved by the battery,
The method of controlling an air purifier, characterized in that, when the amount of change in the measured power value is greater than or equal to a predetermined value, the power of the battery output to the flow conversion device is cut off. According to claim 10,
In the plurality of devices,
A first blower, a second blower provided above the first blower, and a flow conversion device movably provided above the second blower,
The control method of an air purifier, characterized in that the flow conversion device is provided with a third fan exposed to the outside by a discharge port through which air is discharged. According to claim 11,
When the third fan is driven by the battery,
The control method of the air purifier, characterized in that for cutting off the power of the battery output to the third fan when the amount of change in the measured power value is greater than a predetermined value. delete According to claim 10,
A power supply connected to an external power source is further included,
The air purifier is turned on,
Power is output by the power supply unit to drive the plurality of devices,
Control method of the air purifier, characterized in that the power of the battery is charged by the power supply unit. 15. The method of claim 14,
The amount of current of the battery charged by the power supply unit is measured,
When the measured power value is normally charged by the power supply unit, it is determined whether it is included in the input power value range (normal range);
When the measured power value is not included in the normal range, the control method of the air purifier, characterized in that for stopping the charging of the battery and displaying it.

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