KR102658132B1 - Air cean fan - Google Patents

Abstract

The present invention includes a base case formed with an intake port through which air is sucked; A tower case disposed above the base case and including a first tower and a second tower, wherein the tower case includes a blowing space formed by the first tower and the second tower being spaced apart from each other; a first discharge port formed in the first tower and discharging the sucked air into the blowing space; a second discharge port formed in the second tower and discharging the sucked air into the blowing space; An airflow converter that protrudes into the blowing space and changes the direction of air flowing through the blowing space; Guide board protruding into the blowing space; A guide motor that is placed above the guide board and provides driving force to the guide board; It provides an air clean fan that prevents pressure loss by not interfering with air flow, including a board guider that moves in a direction that intersects the protruding direction of the guide board and transmits the driving force of the guide motor to the guide board.

Description

Air clean fan {Air cean fan}

The present invention relates to an air clean fan that discharges air through the Coanda effect.

In general, a blower is a mechanical device that drives a fan to create air flow. A conventional blower includes a fan that rotates around a rotation axis, and a motor rotates the fan to generate wind.

Conventional fans using axial fans have the advantage of providing wind over a wide area, but have the problem of not being able to provide wind concentrated in a narrow area.

Korean Patent No. 10-1331487 describes a fan that provides wind to the user using the Coanda effect.

Conventional fans had the problem of providing wind concentrated in only a narrow area because they used the Coanda effect.

Generally, in order to move a board, a driving part is provided at the front or rear of the board to move the board. However, in the case of the prior art, there is a problem in that an air passage through which air flows is formed inside the case, and the driving unit disposed at the rear of the board causes air resistance and pressure loss.

Republic of Korea Patent No. 10-1331487

The purpose of the present invention is to provide an air clean fan that can provide air to the user through the Coanda effect.

The purpose of the present invention is to provide an air clean fan having a drive assembly that easily moves the guide board without disturbing the air flow.

The purpose of the present invention is to provide an air clean fan that stably guides a guide board and reduces vibration and noise.

The air clean fan according to an embodiment of the present invention includes a base case with an intake port through which air is sucked, a tower case disposed on the upper side of the base case and formed by separating the first tower and the second tower, and the first tower and the second tower. A blowing space formed in between, a first discharge port formed in the first tower and discharging the sucked air into the blowing space, and a second discharge port formed in the second tower and discharging the sucked air into the blowing space, which protrudes into the blowing space and blows. It includes an airflow converter that changes the direction of air flowing through the space. The air flow converter is disposed on at least one of the first tower or the second tower and is disposed on at least one of the guide board, the first tower or the second tower, which protrudes into the blowing space, but is disposed above the guide board and provides a driving force to the guide board. It includes a guide motor that provides a guide motor, a board guider that is connected to the guide board and moves in a direction intersecting the protruding direction of the guide board to transmit the driving force of the guide motor to the guide board.

The air flow converter may include a pinion coupled to the shaft of the guide motor, and a rack that is connected to the pinion and raises the guide board when the guide motor operates.

The board guider moves in a first direction that intersects the air discharge direction when the guide motor operates, and the guide board may protrude in a second direction that intersects both the air discharge direction and the board guider's moving direction when the board guider moves.

The first discharge port extends long in the longitudinal direction of the first tower, the second discharge port extends long in the longitudinal direction of the second tower, and the board guider can move in the longitudinal direction of the first tower or the second tower.

The first tower, second tower, and blowing space are formed in the shape of a truncated cone, and the guide board can move in the circumferential direction of the truncated cone.

It may further include a board slit penetrating the inner wall of the first tower or the second tower, and the guide board may be arranged parallel to the board slit.

It may further include a board slit penetrating the inner wall of the first tower or the second tower, and the board guider may be arranged parallel to the board slit.

The guide board may include a radially convex curved surface.

The board guider is formed through one side and includes a first slit that guides the movement of the guide board. The guide board is formed to protrude on one side, and at least a portion is inserted into the first slit and slides along the first slit. It may include a first protrusion.

The air clean fan includes an air flow converter cover disposed on the rear of the board guider, the board guider includes a second slit formed through one side, and the air flow converter cover is formed to protrude on one side and at least a portion of the air flow converter cover is formed to protrude from one side. It may include a second protrusion inserted into the second slit.

The air clean fan is placed at the rear of the board guider and includes a first cover that supports the rear of the board guider and guides the sliding of the board guider, and a second cover that supports one side of the board guider and guides the sliding of the board guider. It may further include an air flow converter cover.

The air flow converter may be disposed ahead of the first or second discharge port based on the air discharge direction.

The air clean fan according to the present invention has one or more of the following effects.

First, the guide motor is placed above the discharge space, and the guide board is placed biased toward the front, which has the advantage of preventing pressure loss by not interfering with air flow.

Second, the board guider slides while being supported by the second protrusion and the cover, and the guide board slides along the first slit, which has the advantage of preventing vibration and noise by moving the guide board stably.

Third, the present invention has the advantage of being able to inhale indoor air, filter it through a filter placed inside, and then discharge the filtered air to the user using the Coanda effect.

Fourth, the present invention induces the Coanda effect for the air discharged from the first tower and the air discharged from the second tower, then merges them in the blowing space and discharges them, thereby increasing the straightness and reach of the discharged air. There is an advantage to being able to do it.

Fifth, the present invention has the advantage of converting a horizontal airflow into an upward airflow through a guide board that selectively protrudes into the blowing space.

Sixth, the present invention has the advantage of being able to immediately raise the upward airflow to the upper side of the blowing space and convect indoor air through this.

Seventh, the present invention has the advantage that the discharged air is uniform in the vertical direction because the first discharge port of the first oval and the second discharge port of the second tower are formed to extend long in the vertical direction.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of an air clean fan according to a first embodiment of the present invention;
Figure 2 is an operation example of Figure 1;
Figure 3 is a front view of Figure 2,
Figure 4 is a plan view of Figure 3;
Figure 5 is a cross-sectional view of the right side of Figure 2;
Figure 6 is a front cross-sectional view of Figure 2;
Figure 7 is a partially exploded perspective view showing the interior of the second tower of Figure 2;
Figure 8 is a right side view of Figure 7;
Figure 9 is a plan cross-sectional view taken along line Ⅸ-IX of Figure 3;
Figure 10 is a bottom cross-sectional view taken along line IX-IX of Figure 3;
Figure 11 is a perspective view showing the second position of the air flow converter;
Figure 12 is a perspective view showing the first position of the air flow converter;
Figure 13 is an exploded perspective view of the air flow converter;
Figure 14 is a front view showing the air flow converter with the guide board removed;
Figure 15 is a front view showing a state in which the guide board in Figure 14 is installed;
Figure 16 is a side cross-sectional view of the air flow converter;
Figure 17 is an enlarged view showing the second protrusion in the air flow converter;
Figure 18 is a cross-sectional view showing the air flow converter with the second protrusion inserted into the second slit;
Figure 19 is a flat cross-sectional view briefly showing the direction of air flow depending on the position of the guide board;
Figure 20 is a front cross-sectional view of Figure 2 according to another embodiment of the present invention;
Figure 21 is a partially exploded perspective view showing the interior of the second tower of Figure 20;
Figure 22 is a right side view of Figure 21;
Figure 23 is an exemplary diagram showing the horizontal airflow of the air clean fan according to the present invention;
Figure 24 is an illustration showing the rising airflow of the air clean fan according to the present invention;
Figure 25 is a diagram showing the results of an experiment comparing the effect of the entrance angle of the air guide with the prior art;
Figure 26 is a diagram showing the results of an experiment showing the effect depending on the angle of the heater according to an embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Figure 1 is a perspective view of an air clean fan according to a first embodiment of the present invention, Figure 2 is an operation example of Figure 1, Figure 3 is a front view of Figure 2, and Figure 4 is a top view of Figure 3.

1 to 4, the air clean fan 1 according to an embodiment of the present invention includes a case 100 that provides an external appearance. The case 100 includes a base case 150 in which the filter 200 is installed, and a tower case 140 that discharges air through the Coanda effect.

And the tower case 140 includes a first tower 110 and a second tower 120 arranged separately in the form of two pillars. In this embodiment, the first tower 110 is placed on the left, and the second tower 120 is placed on the right.

The first tower 110 and the second tower 120 are spaced apart, and a blowing space 105 is formed between the first tower 110 and the second tower 120.

In this embodiment, the blowing space 105 is opened at the front, rear, and top, and the upper and lower ends of the blowing space 105 are spaced equally.

The tower case 140 including the first tower, the second tower, and the blowing space is formed in the shape of a truncated cone.

The discharge ports 117 and 127 respectively disposed in the first tower 110 and the second tower 120 discharge air into the blowing space 105. When distinction of discharge ports is necessary, the discharge port formed in the first tower 110 is called the first discharge port 117, and the discharge port formed in the second tower 120 is called the second discharge port 127.

The first discharge port and the second discharge port are disposed within the height of the blowing space, and a direction crossing the blowing space 105 is defined as the air discharge direction.

Since the first tower 110 and the second tower 120 are disposed on the left and right, the air discharge direction in this embodiment can be formed in the front-back direction and the up-down direction.

That is, the air discharge direction across the blowing space 105 includes a first air discharge direction (S1) arranged in a horizontal direction and a second air discharge direction (S2) formed in an upward and downward direction.

The air flowing in the first air discharge direction (S1) is called a horizontal airflow, and the air flowing in the second air discharge direction (S2) is called an upward airflow.

It should be understood that the horizontal airflow does not mean that air flows only in the horizontal direction, but that the flow rate of air flowing in the horizontal direction is greater. Likewise, rising airflow should be understood as meaning that the flow rate of air flowing in the upward direction is greater, rather than meaning that air flows only in the upward direction.

In this embodiment, the upper and lower gaps of the blowing space 105 are formed to be the same. Unlike this embodiment, the upper spacing of the blowing space 105 may be narrower or wider than the lower spacing.

By making the left and right widths of the blowing space 105 constant, the flow of air flowing in front of the blowing space can be formed more uniformly.

For example, if the width of the upper side and the width of the lower side are different, the flow speed on the wider side may be formed to be low, and a speed deviation may occur based on the vertical direction. If there is a deviation in the air flow velocity in the up and down directions, the arrival length of the air may vary.

The air discharged from the first outlet and the second outlet may join in the blowing space 105 and then flow to the user.

That is, in this embodiment, the discharge air from the first discharge port 117 and the discharge air from the second discharge port 127 do not flow to the user individually, but the discharge air from the first discharge port 117 and the discharge air from the second discharge port 127 ) discharge air is combined in the blowing space 105 and then provided to the user.

The blowing space 105 can be used as a space where discharge air is combined and mixed. In addition, the air behind the blowing space can also flow into the blowing space by the discharge air discharged into the blowing space 105.

As the discharge air from the first discharge port 117 and the discharge air from the second discharge port 127 merge in the blowing space, the straightness of the discharge air can be improved. Additionally, by combining the discharge air from the first discharge port 117 and the discharge air from the second discharge port 127 in the blowing space, the air around the first tower and the second tower can also flow indirectly in the air discharge direction.

In this embodiment, the first air discharge direction (S1) is formed from the rear to the front, and the second air discharge direction (S2) is formed from the bottom to the top.

For the second air discharge direction S2, the upper end 111 of the first tower 110 and the upper end 121 of the second tower 120 are spaced apart. That is, the air discharged in the second air discharge direction (S2) does not interfere with the case of the air clean fan (1).

And for the first air discharge direction (S1), the front end 112 of the first tower 110 and the front end 122 of the second tower 120 are spaced apart, and the rear end of the first tower 110 ( 113) and the rear end 123 of the second tower 120 are also spaced apart.

The surface of the first tower 110 and the second tower 120 facing the blowing space 105 is referred to as the inner surface, and the surface not facing the blowing space 105 is referred to as the outer surface.

The outer wall 114 of the first tower 110 and the outer wall 124 of the second tower 120 are disposed in opposite directions, and the inner wall 115 of the first tower 110 and the second tower ( The inner walls 125 of 120) face each other.

When it is necessary to distinguish between the inner walls 115 and 125, the inner side of the first tower is called the first inner wall 115, and the inner side of the second tower is called the second inner wall 125.

Likewise, when it is necessary to distinguish between the outer walls 114 and 124, the outer surface of the first tower is referred to as the first outer wall 114, and the outer surface of the second tower is referred to as the second outer wall 124.

The first outer wall 114 is formed on the outer side of the first inner wall 115. The first outer wall 114 and the first inner wall 115 form a space inside which air flows. The second outer wall 124 is formed on the outer side of the second inner wall 125. The first outer wall 124 and the first inner wall 125 form a space inside which air flows.

The first tower 110 and the second tower 120 are formed in a streamlined shape with respect to the air flow direction.

Specifically, the first inner wall 115 and the first outer wall 114 are formed in a streamlined shape in the front-to-back direction, and the second inner wall 125 and the second outer wall 124 are formed in a streamlined shape in the front-to-back direction. do.

The first discharge port 117 is disposed on the first inner wall 115, and the second discharge port 127 is disposed on the second inner wall 125.

The shortest distance between the first inner wall 115 and the second inner wall 125 is B0. The discharge ports 117 and 127 are located rearward of the shortest distance B0.

The separation distance between the front end 112 of the first tower 110 and the front end 122 of the second tower 120 is referred to as the first separation distance B1, and the rear end 113 of the first tower 110 and the second The separation distance between the rear end 123 of the tower 120 is referred to as the second separation distance B2.

In this embodiment, B1 and B2 are formed identically. Unlike this embodiment, the length of either B1 or B2 may be formed longer.

The first outlet 117 and the second outlet 127 are disposed between B0 and B2.

The first outlet 117 and the second outlet 127 are preferably disposed closer to the rear end 113 of the first tower 110 and the rear end 123 of the second tower 120 than to B0.

The closer the discharge ports 117 and 127 are located to the rear ends 113 and 123, the easier it is to control airflow through the Coanda effect, which will be described later.

The inner wall 115 of the first tower 110 and the inner wall 125 of the second tower 120 directly provide the Coanda effect, and the outer wall 114 of the first tower 110 and the second tower 120 provide the Coanda effect. 2 The outer wall 124 of the tower 120 indirectly provides the Coanda effect.

The inner walls 115 and 125 directly guide the air discharged from the discharge ports 117 and 127 to the front ends 112 and 122.

That is, the air discharged from the discharge ports 117 and 127 directly provides a horizontal airflow.

Due to the air flow in the blowing space 105, indirect air flow also occurs in the outer walls 114 and 124.

The outer walls 114 and 124 cause the Coanda effect to the indirect air flow and guide the indirect air flow to the front ends 112 and 122.

The left side of the blowing space is blocked by the first inner wall 115, the right side of the blowing space is blocked by the second inner wall 125, but the upper side of the blowing space 105 is open.

An airflow converter, which will be described later, can convert the horizontal airflow passing through the blowing space into an upward airflow, and the upward airflow can flow to the open upper side of the blowing space. The rising airflow can prevent the discharged air from flowing directly to the user and actively convect the indoor air.

Additionally, the width of the discharged air can be adjusted through the flow rate of the air combined in the blowing space.

By forming the top and bottom lengths of the first outlet 117 and the second outlet 127 to be much longer than the left and right widths (B0, B1, B2) of the blowing space, the discharge air from the first outlet and the discharge air from the second outlet are You can encourage them to join at Blowing Space.

1 to 3, the case 100 of the air clean fan 1 according to an embodiment of the present invention includes a base case 150 on which a filter is detachably installed, and an upper side of the base case 150. It is disposed in and includes a tower case 140 supported on the base case 150.

The tower case 140 includes the first tower 110 and the second tower 120.

In this embodiment, a tower base 130 connecting the first tower 110 and the second tower 120 is disposed, and the tower base 130 is assembled to the base case 150. The tower base 130 may be manufactured integrally with the first tower 110 and the second tower 120.

Unlike this embodiment, the first tower 110 and the second tower 120 can be directly assembled to the base case 150 without the tower base 130, and can be manufactured integrally with the base case 150. It may be possible.

The base case 150 forms the lower part of the air clean fan (1), and the tower case 140 forms the upper part of the air clean fan (1).

The air clean fan 1 can suck in ambient air from the base case 150 and discharge filtered air from the tower case 140. The tower case 140 may discharge air at a higher position than the base case 150.

The air clean fan (1) has a pillar shape whose diameter becomes smaller as it moves upward. The air clean fan 1 may have an overall cone or truncated cone shape.

Unlike the present embodiment, the air clean fan 1 may include a form in which two towers are arranged. Additionally, unlike the present embodiment, the cross section does not have to be narrowed toward the top.

However, when the cross-section becomes narrower toward the top as in this embodiment, there is an advantage in that the center of gravity is lowered and the risk of falling due to external impact is reduced.

For convenience of assembly, in this embodiment, it is manufactured separately into a base case 150 and a tower case 140.

Unlike this embodiment, the base case 150 and the tower case 140 may be integrated. For example, the base case and tower case can be manufactured in the form of a front case and a rear case manufactured as one piece and then assembled.

In this embodiment, the base case 150 is formed to have a gradually smaller diameter toward the top. The tower case 140 is also formed to have a gradually smaller diameter toward the top.

The outer surfaces of the base case 150 and the tower case 140 are formed at reverse speeds. In particular, the lower end of the tower base 130 and the upper end of the base case 150 are in close contact, and the outer surface of the tower base 130 and the outer surface of the base case 150 form a continuous surface.

To this end, the bottom diameter of the tower base 130 may be formed to be equal to or slightly smaller than the top diameter of the base case 150.

The tower base 130 distributes filtered air supplied from the base 150 tower and provides the distributed air to the first tower 110 and the second tower 120.

The tower base 130 connects the first tower 110 and the second tower 120, and the blowing space 105 is disposed above the tower base 130.

In addition, the discharge ports 117 and 127 are disposed on the upper side of the tower base 130, and the upward airflow and horizontal airflow are formed on the upper side of the tower base 130.

In order to minimize friction with air, the upper side 131 of the tower base 130 is formed as a curved surface. In particular, the upper side is formed as a curved surface that is concave downward and extends in the front-back direction. One side 131a of the upper side 131 is connected to the first inner wall 115, and the other side 131b of the upper side 131 is connected to the second inner wall 125.

Referring to FIG. 4, when viewed from the top, the first tower 110 and the second tower 120 are left and right symmetrical with respect to the center line L-L'. In particular, the first outlet 117 and the second outlet 127 are arranged symmetrically left and right with respect to the center line L-L'.

The center line L-L' is an imaginary line between the first tower 110 and the second tower 120, and in this embodiment is arranged in the front-back direction and passes through the upper side 131.

Unlike this embodiment, the first tower 110 and the second tower 120 may be formed in an asymmetric shape. However, it is more advantageous to control horizontal and upward airflows if the first tower 110 and the second tower 120 are arranged symmetrically with respect to the center line L-L'.

Figure 5 is a right cross-sectional view of Figure 2, and Figure 6 is a front cross-sectional view of Figure 2.

Referring to Figures 1, 5, or 6, the air clean fan 1 includes a filter 200 disposed inside the case 100, and a filter 200 disposed inside the case 100 to direct air through the discharge port ( It includes a fan device 300 that flows to 117)(127).

In this embodiment, the filter 200 and the fan device 300 are disposed inside the base case 150.

The base case 150 is formed in the shape of a truncated cone, and in this embodiment, the upper side is open.

The base case 150 includes a base 151 that is seated on the ground, and a base outer 152 that is coupled to the upper side of the base 151, has a space therein, and has an intake port 155.

When viewed from the top, the base 151 is formed in a circular shape. The base 151 may have various shapes.

The base outer 152 is formed in the shape of a truncated cone with openings on the upper and lower sides. Additionally, a portion of the side surface of the base outer 152 is formed to be open. The opened portion of the base outer 152 is called a filter insertion port 154.

The case 100 further includes a cover 153 that shields the filter insertion hole 154. The cover 153 is detachably assembled from the base outer 152, and the filter 200 can be mounted or assembled on the cover 153.

The user can remove the cover 153 and take the filter 200 out of the case 100.

The inlet 155 may be formed in at least one of the base outer 152 and the cover 153. In this embodiment, the intake port 155 is formed in both the base outer 152 and the cover 153, and can suck air from all 360 directions around the case 100.

In this embodiment, the intake port 155 is formed in the shape of a hole, and the shape of the intake port 155 can be formed in various ways.

The filter 200 is formed in a cylindrical shape with a vertical hollow formed inside. The outer surface of the filter 200 faces the suction port 155.

Indoor air flows through the filter 200 from the outside to the inside, and in this process, foreign substances or harmful gases in the air can be removed.

The fan device 300 is disposed above the filter 200. The fan device 300 may flow the air that has passed through the filter 200 to the first tower 110 and the second tower 120.

The fan device 300 includes a fan motor 310 and a fan 320 rotated by the fan motor 310, and is disposed inside the base case 150.

The fan motor 310 is disposed above the fan 320, and the motor shaft of the fan motor 310 is coupled to the fan 320 disposed below.

A motor housing 330 in which the fan motor 310 is installed is disposed above the fan 320.

In this embodiment, the motor housing 330 has a shape that surrounds the entire fan motor 310. Since the motor housing 330 surrounds the entire fan motor 310, flow resistance with air flowing from the bottom to the top can be reduced.

Unlike this embodiment, the motor housing 330 may be formed to surround only the lower part of the fan motor 310.

The motor housing 330 includes a lower motor housing 332 and an upper motor housing 334. At least one of the lower motor housing 332 and the upper motor housing 334 is coupled to the case 100.

In this embodiment, the lower motor housing 332 is coupled to the case 100. After the fan motor 310 is installed on the upper side of the lower motor housing 332, the upper motor housing 334 is covered to cover the fan motor 310.

The motor shaft of the fan motor 310 penetrates the lower motor housing 332 and is assembled to the fan 320 disposed below.

The fan 320 may include a hub to which the shaft of the fan motor is coupled, a shroud spaced apart from the hub, and a plurality of blades connecting the hub and the shroud.

The air that has passed through the filter 200 is sucked into the shroud, and then is pressurized and flows by the rotating blade. The hub is disposed on the upper side of the blade, and the shroud is disposed on the lower side of the blade. The hub may be formed in a bowl shape concave downward, and a portion of the lower side of the lower motor housing 332 may be inserted.

In this embodiment, the fan 320 is a mixed flow fan. A flow fan sucks in air at the center of its axis and discharges air in a radial direction, but has the characteristic that the discharged air is inclined with respect to the axial direction.

Since the overall air flow flows from the bottom to the top, when air is discharged in the radial direction like a general centrifugal fan, a large flow loss occurs due to change in flow direction.

The mixed flow fan can minimize air flow loss by discharging air upward in the radial direction.

Meanwhile, a diffuser 340 may be further disposed above the fan 320. The diffuser 340 guides the air flow caused by the fan 320 in an upward direction.

The diffuser 330 serves to further reduce the radial component of the air flow and strengthen the upward air flow component.

The motor housing 330 is disposed between the diffuser 330 and the fan 320.

In order to minimize the vertical installation height of the motor housing, the lower end of the motor housing 330 may be inserted into the fan 320 and overlap with the fan 320. Additionally, the top of the motor housing 330 may be inserted into the diffuser 340 and overlap with the diffuser 340.

Here, the lower end of the motor housing 330 is placed higher than the lower end of the fan 320, and the upper end of the motor housing 330 is placed lower than the upper end of the diffuser 340.

In order to optimize the installation position of the motor housing 330, in this embodiment, the upper side of the motor housing 330 is placed inside the tower base 130, and the lower side of the motor housing 330 is positioned inside the base case 150. ) is placed inside. Unlike this embodiment, the motor housing 330 may be placed inside the tower base 130 or the base case 150.

Meanwhile, a suction grill 350 may be disposed inside the base case 150. The suction grill 350 is used to prevent the user's fingers from entering the fan 320 when the filter 200 is separated, thereby protecting the user and the fan 320.

The filter 200 is disposed below the suction grill 350, and the fan 320 is disposed above. The suction grill 350 has a plurality of through holes formed in the vertical direction to allow air to flow.

Inside the case 100, the space below the suction grill 350 is defined as the filter installation space 101. Inside the case 100, the space between the suction grill 350 and the discharge ports 117 and 127 is defined as the blowing space 102. Inside the case 100, the internal space of the first tower 110 and the second tower 120 where the discharge ports 117 and 127 are disposed is defined as the discharge space 103.

Indoor air flows into the filter installation space 101 through the intake port 155 and is then discharged to the discharge ports 117 and 127 through the blowing space 102 and the discharge space 103.

FIG. 7 is a partially exploded perspective view showing the inside of the second tower of FIG. 2, and FIG. 8 is a right side view of FIG. 7.

Next, referring to Figures 5 or 8, the first discharge port 117 and the second discharge port 127 according to this embodiment are arranged to extend long in the vertical direction.

The first discharge port 117 is disposed between the front end 112 and the rear end 113 of the first tower 110 and close to the rear end 113. The air discharged from the first discharge port 117 may flow along the first inner wall 115 and toward the front end 112 due to the Coanda effect.

The first discharge port 117 has a first border 117a forming an edge on the air discharge side (front end in this embodiment), and a second border 117b forming an edge on the opposite side of the air discharge (rear end in this embodiment). ), an upper border 117c forming the upper edge of the first discharge opening 117, and a lower border 117d forming the lower edge of the first discharge opening 117.

In this embodiment, the first border 117a and the second border 117b are arranged parallel to each other. The upper border 117c and lower border 117d are arranged parallel to each other.

The first border 117a and the second border 117b are disposed at an angle with respect to the vertical direction V. Additionally, the rear end 113 of the first tower 110 is also disposed at an angle with respect to the vertical direction (V).

In this embodiment, the inclination (a1) of the first border (117a) and the second border (117b) with respect to the vertical direction (V) is formed at 4 degrees, and the inclination (a2) of the rear end (113) is formed at 3 degrees. . That is, the inclination (a1) of the discharge port 117 is formed to be greater than the inclination of the outer surface of the tower.

The second outlet 127 is left and right symmetrical with the first outlet 117.

The second discharge port 127 has a first border 127a forming an edge on the air discharge side (front end in this embodiment) and a second border 127b forming an edge on the opposite side of the air discharge (rear end in this embodiment). ), an upper border 127c forming the upper edge of the second discharge opening 127, and a lower border 127d forming the lower edge of the second discharge opening 127.

The first border 127a and the second border 127b are disposed inclined with respect to the vertical direction (V), and the rear end 113 of the first tower 110 is also disposed inclined with respect to the vertical direction (V). And the inclination (a1) of the discharge port 127 is formed to be greater than the inclination (a2) of the outer surface of the tower.

FIG. 9 is a plan cross-sectional view taken along line IX-IX of FIG. 3, and FIG. 10 is a bottom cross-sectional view taken along line IX-IX of FIG. 3.

5, 9 or 10, the first discharge port 117 of the first tower 110 is disposed toward the second tower 120, and the second discharge port of the second tower 120 (127) is arranged to face the first tower (110).

The air discharged from the first outlet 117 causes the air to flow along the inner wall 115 of the first tower 110 through the Coanda effect. The air discharged from the second outlet 127 causes the air to flow along the inner wall 125 of the second tower 120 through the Coanda effect.

This embodiment further includes a first discharge case 170 and a second discharge case 180.

The first discharge port 117 is formed in the first discharge case 170, and the first discharge case 170 is assembled to the first tower 110. The second discharge port 127 is formed in the second discharge case 180, and the second discharge case 180 is assembled to the second tower 120.

The first discharge case 170 is installed to penetrate the inner wall 115 of the first tower 110, and the second discharge case 180 penetrates the inner wall 125 of the second tower 120. It is installed penetratingly.

A first discharge opening 118 in which the first discharge case 170 is installed is formed in the first tower 110, and the second discharge case 180 is installed in the second tower 120. 2 A discharge opening 128 is formed.

The first discharge case 170 forms a first discharge port 117, and includes a first discharge guide 172 disposed on the air discharge side of the first discharge port 117, and the first discharge port 117. and a second discharge guide 174 disposed on the opposite side of the first discharge port 117 from which the air is discharged.

The outer surfaces 172a and 174a of the first discharge guide 172 and the second discharge guide 174 provide a portion of the inner wall 115 of the first tower 110.

The inside of the first discharge guide 172 is disposed toward the first discharge space 103a, and the outside is disposed toward the blowing space 105. The inside of the second discharge guide 174 is disposed toward the first discharge space 103a, and the outside is disposed toward the blowing space 105.

The outer surface 172a of the first discharge guide 172 may be formed as a curved surface. The outer surface 172a may provide a continuous surface with the first inner wall 115. In particular, the outer surface 172a forms a curved surface that is continuous with the outer surface of the first inner wall 115.

The outer surface 174a of the second discharge guide 174 may provide a continuous surface with the first inner wall 115. The inner surface 174b of the second discharge guide 174 may be formed as a curved surface. In particular, the inner surface 174b forms a curved surface continuous with the inner surface of the first outer wall 115, and through this, the air in the first discharge space 103a can be guided toward the first discharge guide 172. there is.

The first discharge port 117 is formed between the first discharge guide 172 and the second discharge guide 174, and the air in the first discharge space 103a is discharged through the first discharge port 117. It is discharged into the blowing space (105).

Specifically, the air in the first discharge space 103a is discharged between the outer surface 172a of the first discharge guide 172 and the inner surface 174b of the second discharge guide 174, and the first discharge guide 174 A discharge interval 175 is defined between the outer surface 172a of 172 and the inner surface 174b of the second discharge guide 174. The discharge interval 175 forms a predetermined channel.

As for the discharge interval 175, the width of the middle portion 175b is narrower than that of the inlet 175a and the outlet 175c. The middle portion 175b is defined as the shortest distance between the second border 117b and the outer surface 172a.

The cross-sectional area of the discharge interval 175 gradually narrows from the inlet to the middle portion 175b, and the cross-sectional area widens again from the middle portion 175b to the outlet 175c. The middle portion 175b is located inside the first tower 110. When viewed from the outside, the outlet 175c of the discharge interval 175 may be seen as the discharge port 117.

In order to induce the Coanda effect, the radius of curvature of the inner surface 174b of the second discharge guide 174 is formed to be larger than the radius of curvature of the outer surface 172a of the first discharge guide 172.

The center of curvature of the outer surface 172a of the first discharge guide 172 is located ahead of the outer surface 172a and is formed inside the first discharge space 103a. The center of curvature of the inner surface 174b of the second discharge guide 174 is located on the side of the first discharge guide 172 and is formed inside the first discharge space 103a.

The second discharge case 180 forms a second discharge port 127, and includes a first discharge guide 182 disposed on the air discharge side of the second discharge port 127, and the second discharge port 127. And, it includes a second discharge guide 184 disposed on the opposite side of the second discharge port 127 from which the air is discharged.

A discharge gap 185 is formed between the first discharge guide 182 and the second discharge guide 184.

Since the second discharge case 180 is left and right symmetrical to the first discharge case 170, detailed description is omitted.

Meanwhile, the air clean fan 1 may further include an air flow converter 400 that changes the air flow direction in the blowing space 105. The air flow converter 400 protrudes into the blowing space 105 and is a component that changes the direction of air flowing through the blowing space 105. In this embodiment, the airflow converter 400 can convert the horizontal airflow flowing through the blowing space 105 into an upward airflow.

11 and 12 are perspective views of the air flow converter 400. In more detail, Figure 11 shows an airflow converter 400 that blocks the front of the blowing space 105 to realize an upward airflow, and Figure 12 shows an airflow that opens the front of the blowing space 105 to realize a forward discharge airflow. The converter 400 is shown. 1 to 6, the air flow converter 400 is shown as a box, showing that the air flow converter 400 is placed on the top of the first tower 110 or the top of the second tower 120. .

Referring to FIG. 7, the air flow converter 400 includes a first air flow converter 401 disposed in the first tower 110, and a second air flow converter 402 disposed in the second tower 120. Includes. The first air flow converter 401 and the second air flow converter 402 are left and right symmetrical and have the same configuration.

The air flow converter 400 is disposed on the tower and includes a guide board 410 that protrudes into the blowing space 105, and a guide motor 420 that provides driving force for movement of the guide board 410. ) and a board guider 430 that is placed inside the tower and guides the movement of the guide board 410.

The guide board 410 is a component disposed on at least one of the first tower 110 or the second tower 120, protrudes into the blowing space 105, and selectively changes the discharge area in front of the blowing space. am. The guide board 410 protrudes forward to the blowing space 105 through the board slits 119 and 129.

The guide board 410 may be hidden inside the tower, and may protrude into the blowing space 105 when the guide motor 420 operates.

In this embodiment, the guide board 410 includes a first guide board 411 placed on the first tower 110 and a second guide board 412 placed on the second tower 120.

For this purpose, a board slit 119 penetrating the inner wall 115 of the first tower 110 is formed, and a board slit 129 penetrating the inner wall 125 of the second tower 120 is formed. Each is formed.

The board slit 119 formed in the first tower 110 is called the first board slit 119, and the board slit formed in the second tower 120 is called the second board slit 129.

The first board slit 119 and the second board slit 129 are arranged left and right symmetrically. The first board slit 119 and the second board slit 129 are formed to extend long in the vertical direction. The first board slit 119 and the second board slit 129 may be arranged at an angle with respect to the vertical direction (V).

The front end 112 of the first tower 110 is formed with an inclination of 3 degrees, and the first board slit 119 is formed with an inclination of 4 degrees. The front end 122 of the second tower 120 is formed with an inclination of 3 degrees, and the second board slit 129 is formed with an inclination of 4 degrees.

The guide board 410 may be formed in a flat or curved plate shape. The guide board 410 may be formed to extend long in the vertical direction and may be placed in front of the blowing space 105.

The guide board 410 may include a curved portion that is convex in the radial direction.

The guide board 410 can block the horizontal airflow flowing into the blowing space 105 and change its direction upward.

In this embodiment, the inner end 411a of the first guide board 411 and the inner end 412a of the second guide board 412 come into contact with or are close to each other to form an upward airflow. Unlike this embodiment, one guide board 410 may be in close contact with the opposite tower to form an upward airflow.

When the air flow converter 400 is not operating, the inner end 411a of the first guide board 411 closes the first board slit 119, and the inner end of the second guide board 412 ( 412a) can close the second board slit 129.

When the air flow converter 400 is operated, the inner end 411a of the first guide board 411 protrudes into the blowing space 105 through the first board slit 119, and the second guide board 411 protrudes into the blowing space 105. The inner end 412a of 412 may protrude into the blowing space 105 through the second board slit 129.

In this embodiment, the first guide board 411 and the second guide board 412 protrude into the blowing space 105 through a rotational motion. Unlike the present embodiment, at least one of the first guide board 411 and the second guide board 412 may be moved linearly in a slide manner and may protrude into the blowing space 105.

When viewed from the top, the first guide board 411 and the second guide board 412 are formed in an arc shape. The first guide board 411 and the second guide board 412 form a predetermined radius of curvature, and the center of curvature is located in the blowing space 105.

When the guide board 410 is hidden inside the tower, it is preferable that the radial inner volume of the guide board 410 is larger than the radial outer volume.

The guide board 410 may be made of a transparent material. A light-emitting member such as an LED can be placed on the guide board 410, and the entire guide board 410 can emit light through the light generated from the light-emitting member. The light emitting member may be disposed in the discharge space 103 inside the tower and at the outer end of the guide board 410.

The guide motor 420 is a component that provides driving force to the guide board 410. The guide motor 420 is disposed on at least one of the first tower 110 and the second tower 120. The guide motor 420 is disposed above the guide board 410.

The guide motor 420 includes a first guide motor 421 that provides rotational force to the first guide board 411, and a second guide motor 422 that provides rotational force to the second guide board 412. Includes.

The first guide motor 421 may be disposed on the upper and lower sides, respectively. If distinction is necessary, it may be divided into an upper first guide motor 421 and a lower first guide motor 421.

The second guide motor 422 may also be disposed on the upper and lower sides, and if distinction is necessary, it may be divided into an upper second guide motor 422 and a lower second guide motor 422.

The guide motor 420 is fastened to the airflow converter cover 440. In more detail, the guide motor 420 is coupled to the motor support plate 443 of the air flow converter cover 440. The motor support plate 443 is disposed on the top of the air flow converter cover 440. In more detail, the motor support plate 443 protrudes upward from the top of the first cover 441.

The guide motor 420 is coupled to the air flow converter cover 440 by the motor support member 421. The motor support member 421 may be formed to protrude from one side of the guide motor 420. A fastening part is formed on the side of the motor support plate 443 to support the guide motor 420, and the motor support member 421 is fastened to the fastening part. A plurality of fastening units may be formed. The motor support member 421 may protrude upward from the top of the guide motor 420, or may protrude downward from the bottom of the guide motor 420.

Guide motor 420 includes a shaft 422. The shaft 422 is disposed horizontally. The shaft 422 of the guide motor may be arranged vertically from the first board slit 119 or the second board slit 129.

The guide motor 420 includes a pinion 423. The pinion 423 is coupled to the shaft 422 of the guide motor. When the guide motor 420 operates, the pinion 423 rotates. The fanion is placed vertically. The pinion 423 may be arranged horizontally with the first board slit 119 or the second board slit 129.

The board guider 430 is a component that transmits the driving force of the guide motor 420 to the guide board 410. The board guider 430 is placed in front of the guide motor 420 and behind the guide board 410. The board guider 430 is connected to the guide board 410 and moves in a direction intersecting the protruding direction of the guide board 410.

The board guider 430 placed on the first tower 110 is defined as the first board guider, and the board guider 430 placed on the second tower 120 is defined as the second board guider.

The board guider 430 may be arranged horizontally with the guide board 410. The board guider 430 may be arranged parallel to the first board slit 119 or the second board slit 129.

The board guider 430 may have a curved front surface. The front of the board guider 430 is adjacent to the rear of the guide board 410. When the rear of the guide board 410 is formed in an arc shape, the front of the board guider 430 is formed as a curved surface so that the guide board 410 can slide along the front of the board guider 430.

The board guider 430 may have a flat rear surface. The rear of the board guider 430 is adjacent to the front of the air flow converter first cover 441. The board guider 430 can slide along the airflow converter first cover 441.

The top of the board guider 430 is disposed above the guide board 410. When a plate is formed to shield the guide motor 420 from the discharge space 103a, b, the top of the guide board 410 may be placed lower than the plate, and the top of the board guider 430 may be placed above the plate. there is.

The board guider 430 may have a first slit 432 formed therein. The first protrusion 4111 of the guide board 410 is inserted into the first slit 432, and moves the guide board 410 when the board guider 430 moves.

The board guider 430 may have a second slit 434 formed therein. The second protrusion 444 of the air flow converter cover 440 is inserted into the second slit 434, and the board guider 430 slides along the second protrusion 444.

The board guider 430 may be formed with a rack 436. The rack 436 is mechanically connected to the guide motor 420 and moves the board guider 430 when the guide motor 420 operates.

Hereinafter, the driving mechanism of the guide board 410 will be described with reference to FIGS. 11 to 18.

The air flow converter 400 includes a pinion 423 coupled to the shaft 422 of the guide motor. The air flow converter 400 is connected to the pinion 423 and includes a rack 436 that raises the guide board 410 when the guide motor 420 operates. When the guide motor 420 operates, the pinion 423 rotates, and the rack 436 connected to the pinion 423 performs a translational movement.

The shaft 422 of the guide motor 420 is arranged horizontally. When the pinion 423 coupled to the shaft 422 rotates, the rack 436 connected to the pinion 423 moves up and down. For example, when viewed from the left room, when the first guide motor 421 is operated clockwise, the first board guider 430 descends, and when the first guide motor 422 is operated counterclockwise. The first board guider 430 rises. Likewise, when viewed from the right room, when the second guide motor 422 is operated counterclockwise, the second board guider 430 descends, and when the second guide motor 422 is operated clockwise. The second board guider 430 rises.

The rack 436 is disposed above the first slit 432.

The board guider 430 is disposed in front of the guide motor 420, and the rack 436 is formed at the rear of the board guider 430. The board guider 430 protrudes further upward through the plate that separates the guide motor 420 from the discharge spaces 103a and b. The pinion 423 of the guide motor engages with the rack 436 formed on the rear of the board guide.

The board guider 430 moves in a first direction that intersects the air discharge direction when the guide motor 420 operates. The guide board 410 protrudes in a second direction that intersects both the air discharge direction and the moving direction of the board guider 430 when the board guider 430 moves.

Air discharged from the first discharge port 117 or the second discharge port flows forward. The board guider 430 moves upward or downward to intersect the air discharge direction. If the board guider 430 is arranged parallel to the first board slit 119 or the second board slit 129, it can rise or fall along the longitudinal direction of the first board slit 119.

When the board guider 430 moves, the guide board 410 moves laterally to intersect both the air discharge direction and the moving direction of the board guider 430, and the first board slit 119 or the second board slit 119 It protrudes out of the tower case 140 through (129). If the guide board 410 is arranged parallel to the first board slit 119 or the second board slit 129, the guide board 410 can move laterally vertically in the longitudinal direction of the second board slit 129. . When the guide board 410 protrudes outside the tower case 140, it may protrude while rising, and when the guide board 410 is retracted into the tower case 140, it can retract while descending.

The first tower 110, the second tower 120, and the blowing space 105 may be entirely formed in the shape of a truncated cone. The guide board 410 can move in the circumferential direction of the truncated cone. The outer wall of the first tower 110 and the outer wall of the second tower 120 may be formed in a truncated cone shape, and the first guide board 411 may move in the circumferential direction along the inner surface of the outer wall of the first tower 110. and the second guide board 412 can move in the circumferential direction along the inner surface of the outer wall of the second tower 120.

The guide board 410 may be arranged parallel to the board slit. The guide board 410 may be placed perpendicular to the ground, but is preferably placed parallel to the board slit. When the guide board 410 is disposed parallel to the board slit, the guide board 410 may protrude while rising from the ground. Conversely, the guide board 410 may protrude while descending from the ground when retracted. When the board slit is formed with an inclination of 4 degrees from the ground, the guide board 410 is also arranged to have an inclination of 4 degrees from the ground.

The board guider 430 may be arranged parallel to the board slit. The board guider 430 may be placed perpendicular to the ground, but is preferably placed parallel to the board slit. When the guide board 410 is placed parallel to the board slit, gap is prevented when the guide board 410 protrudes, and the guide board 410 is connected more closely. When the board slit is formed with an inclination of 4 degrees from the ground, the board guider 430 is also arranged to have an inclination of 4 degrees from the ground.

The guide board 410 includes a curved surface that is convex in the radial direction. The guide board 410 may be formed in an arc shape so that the center of curvature is disposed inside. The inner surface of the outer wall of the first tower 110 or the inner wall of the second tower 120 includes a curved surface. The guide board 410 forms a convex curved surface in the radial direction to correspond to the curved surface. The front surface of the board guider 430 is curved to correspond to the curved surface of the rear surface of the guide board 410.

The curved surface of the front surface of the board guider 430 may be formed left and right symmetrical as shown in FIG. 11, and the curved surface may be formed so that one side is thicker than the other side as shown in FIG. 19. The inside of the front end of the board guider 430, the front end of the second air flow converter cover 442, and the rear end of the first slit 432 may be arranged on the same extension line. The inside of the front end of the board guider 430, the front end of the second cover 442 of the air flow converter, and the rear end of the first slit 432 may be in contact with the rear of the guide board 410 at the same time. Therefore, the protruding guide board 410 can be stably guided.

The first slit 432 is formed through one side of the board guider 430 and guides the movement of the guide board 410. The first protrusion 4111 is formed to protrude from one side of the guide board 410, at least a portion of which is inserted into the first slit 432, and slides along the first slit 432.

The first slit 432 is formed in the board guider 430.

The left end of the first slit 432 is placed close to the left end of the board guider 430, and the right end of the first slit 432 is placed close to the right end of the board guider 430.

The lower end of the first slit 432 is disposed outside the upper end of the first slit 432. For example, referring to FIG. 11, the lower end of the first slit 432 formed in the first board guider 430 is disposed to the left of the upper end of the first slit 432. Likewise, although not shown, the lower end of the second slit 434 formed in the second board guider 430 will be located to the right of the upper end of the second slit 434.

The first slit 432 includes an inclined portion 4321 in which one end in the protruding direction of the guide board 410 is formed higher than the other end. The inclined portion 4321 includes an inclined surface that goes upward inward. For example, referring to FIG. 11, the lower end of the first slit 432 formed in the first board guider 430 is disposed on the left side of the board guider 430, which is in the protruding direction of the guide board 410. It corresponds to Dan. The top of the first slit 432 formed in the first board guider 430 is disposed on the right side of the board guider 430, and corresponds to one end of the protruding direction of the guide board 410. Likewise, although not shown, the lower end of the first slit 432 formed in the second board guider 430 is disposed on the right side of the board guider 430, which corresponds to the other end of the guide board 410 in the protruding direction. . The top of the first slit 432 formed in the second board guider 430 is disposed on the left side of the board guider 430, and corresponds to one end of the protruding direction of the guide board 410.

The inclined portion 4321 of the first slit changes its position up and down as the board guider 430 rises and falls. When the board guide rises, the first protrusion 4111 heads to the bottom of the inclined portion 4321 of the first slit. Conversely, when the board guide descends, the first protrusion 4111 heads to the top of the inclined portion 4321 of the first slit.

Referring to FIGS. 11 and 16 , the inclined portion 4321 of the first slit may form a chin. The inclined portion 4321 of the first slit may be formed so that the width at the front end is smaller than the width at the rear end. The first protrusion 4111 forms a locking protrusion 4111b to correspond to the protrusion of the inclined portion 4321 of the first slit. That is, the locking protrusion 4111b of the first protrusion 4111 is disposed at the rear end of the inclined portion 4321 of the first slit. Accordingly, the first protrusion 4111 does not escape from the inclined portion 4321 of the first slit.

The first slit 432 has a lower end disposed at the top of the inclined portion 4321 and includes a vertical portion 4322 extending vertically upward.

A bent portion may be formed between the bottom of the vertical portion 4322 of the first slit and the top of the inclined portion 4321.

The vertical portion 4322 of the first slit functions as a stopper. That is, the maximum upward movement distance of the first protrusion 4111 is the top of the inclined portion 4321, and it does not slide along the vertical portion 4322.

Referring to FIGS. 11 and 16 , the vertical portion 4322 of the first slit may form a chin. The vertical portion 4322 of the first slit may have a width at the front end that is smaller than a width at the rear end. The first protrusion 4111 forms a locking protrusion 4111b to correspond to the protrusion of the vertical portion 4322 of the first slit. That is, the locking protrusion 4111b of the first protrusion 4111 is disposed at the rear end of the vertical portion 4322 of the first slit. Accordingly, the first protrusion 4111 does not escape from the inclined portion 4321 of the first slit.

The first slit is disposed at the top of the vertical portion 4322 and includes a first protrusion insertion portion 4323 that inserts the first protrusion 4111 into the first slit 432.

The first protrusion insertion portion 4323 may be formed in a shape corresponding to the cross-sectional shape of the first protrusion 4111.

The diameter of the first protrusion insertion portion 4323 may be formed to be larger than the diameter of the first protrusion 4111. In more detail, the diameter of the first protrusion insertion portion 4323 is formed to be larger than the diameter of the locking protrusion 4111b of the first protrusion.

The first protrusion 4111 is inserted into the first protrusion insertion portion 4323. The first protrusion 4111 descends along the vertical portion 4322 and the guide board 410 is fastened to the board guider 430. The first protrusion 4111 slides downward or slides upward along the inclined portion 4321 and the guide board 410 moves.

A plurality of first slits 432 may be formed. Referring to FIG. 13, three first slits 432 are formed in the board guider 430. A second slit 434 is formed between the first slit 432. The number of first slits 432 is not limited to FIG. 13 and may be changed within a range that can be easily adopted by a person skilled in the art.

The first protrusion 4111 is formed on the guide board 410. In more detail, the first protrusion 4111 is formed on the rear side of the guide board 410.

Referring to FIG. 13, the first protrusion 4111 is formed on the left side of the guide board 410. However, the position of the first protrusion 4111 may be changed within a range that can be easily adopted by a person skilled in the art.

The first protrusion 4111 may form a locking protrusion 4111b. Referring to FIG. 16, the locking protrusion 4111b of the first protrusion is formed to protrude radially outward from the end of the first protrusion 4111. The locking protrusion 4111b of the first protrusion is caught by the protrusion of the inclined portion 4321 or the vertical portion 4322 of the first slit and does not fall off.

When the board guider 430 and the first slit 432 rise or fall, the first protrusion 4111 and the guide board 410 retract or protrude. When the board guider 430 rises, the first protrusion 4111 is located at the bottom of the inclined portion 4321 of the first slit. When the first protrusion 4111 is located at the bottom of the inclined portion 4321, the guide board 410 moves in the circumferential direction and is introduced into the tower case 140 through the first board slit 119. When the board guider 430 descends, the first protrusion 4111 is located at the top of the inclined portion 4321 of the first slit. When the first protrusion 4111 is located at the top of the inclined portion 4321, the guide board 410 moves in the circumferential direction and protrudes out of the tower case 140 through the first board slit 119.

The board guider 430 includes a second slit 434 formed through one side. The air flow converter cover 440 is formed to protrude from one side and includes a second protrusion 444 at least partially inserted into the second slit 434.

The second slit 434 is formed in the board guider 430.

The second slit 434 extends in the longitudinal direction of the first tower 110 or the second tower 120. Referring to FIG. 13, the second slit 434 extends in the vertical direction of the board guider 430.

Referring to FIG. 13, the second slit 434 is disposed between one first slit 432 and the other first slit 432. The second slit 434 and the first slit 432 are arranged at an intersection. By arranging the second slit 434 and the first slit 432 to cross, the force can be distributed and the bending stress of the board guider 430 can be offset.

The board guider 430 slides along the second protrusion 444. The inner surface of the second slit 434 and the outer surface of the second protrusion 444 are in contact with each other, and when the board guider 430 rises or lowers, it slides along the outer surface of the second protrusion 444. do.

Referring to FIGS. 13 and 18 , a bar 435 may be formed in the second slit 434. The second slit bar 435 is disposed between the inner surfaces of the second slits 434. The second slit bar 435 extends to one side wall and the other side wall of the second slit 434. In more detail, the second slit bar 435 is formed to extend horizontally from the middle of the second slit 434. The second slit bar 435 is inserted into the second protrusion groove. The second slit bar 435 slides along the second protrusion groove, the inner surface of the second slit 434 slides along the outer surface of the second protrusion 444, and the board guider 430 slides along the second protrusion 444. (444) allows for more stable elevation.

The second protrusion 444 is formed on the airflow converter cover 440. In more detail, the second protrusion 444 is formed on the front surface of the first cover 441. The second protrusion 444 is formed to protrude from the first cover 441 to the front.

The side of the second protrusion 444 extends in the longitudinal direction of the first tower 110 or the second tower 120. Referring to FIG. 13, the second protrusion 444 extends in the vertical direction.

Referring to FIG. 18, the second slit 434 is inserted into the second protrusion 444. The vertical length of the second protrusion 444 is shorter than the distance between the second slit bar 435 and the lower end of the second slit 434. The protrusion length of the second protrusion 444 is shorter than the width of the second slit 434. The front end of the second protrusion 444 is disposed behind the front end of the board guider 430.

Referring to FIG. 17, the second protrusion 444 further includes a groove 4441. The second protrusion groove 4441 is recessed so that at least a portion of the outer peripheral surface of the second slit bar 435 is inserted.

The second protrusion groove 4441 may be open at the top and recessed at the bottom. The second protrusion groove 4441 may be formed in a U shape. The second protrusion groove 4441 is open at the top and on both sides. The recessed depth of the second protruding groove 4441 is shorter than the distance between the second slit bar 435 and the top of the second slit 434. The second slit bar 435 can only descend to the bottom of the second protruding groove 4441, and this is the position where the board guider 430 descends to its maximum. Therefore, the second protruding groove 4441 functions as a stopper.

Referring to FIG. 11, the air flow converter 400 includes a guide board 410, a guide motor 420, and a cover 440 surrounding the board guider 430. The air flow converter cover 440 is disposed at the rear of the board guider 430. The air flow converter cover 440 consists of a first cover 441, a second cover 442, and a motor support plate 443. Hereinafter, the air flow converter cover 440 disposed on the first tower 110 will be described with reference to FIG. 11, and the air flow converter 400 disposed on the second tower 120 will be clearly derived.

The first cover 441 supports the rear of the board guider 430 and guides the sliding of the board guider 430. The left end of the first cover 441, that is, the outer end of the first cover 441, is disposed on the outer wall of the first tower 110. The right end of the first cover 441, that is, the inner end of the first cover 441, is disposed on the inner wall of the first tower 110.

Referring to FIG. 19, the thickness of the outer end of the first cover 441 is narrower than the thickness of the right end. The outer end of the first cover 441 is disposed behind the inner end of the first cover 441.

The second cover 442 supports one side of the board guider 430 and guides the sliding of the board guider 430.

The second cover 442 is disposed on the inside of the front surface of the first cover 441. The second cover 442 may be formed to protrude forward from the inner end of the first cover 441. The second cover 442 may extend along the inner surface of the first outer wall 114 of the first tower 110 or the second inner wall 125 of the second tower 120.

The front end of the second cover 442 may coincide with the rear end of the first board slit 119 or the second board slit 129. The rear of the guide board 410 may be in contact with the front end of the second cover 442 and the rear end of the first and second board slits 119 and 129. Therefore, the second cover 442 guides the guide board 410 together with the board slit.

The inner end of the second cover 442 is in contact with the inner surface of the first inner wall 115 or the inner surface of the second inner wall 125.

The outer end of the second cover 442 is in contact with the inner surface of the board guider 430. Accordingly, the board guider 430 can slide along the outer surface of the second cover 442. A third protrusion 4411 may be in contact with the outer surface of the board guider 430 opposite to the outer end of the second cover 442.

The motor support plate 443 is disposed on the top of the first cover 441, one side supports the guide motor 420, and the other side supports the board guider 430.

The motor support plate 443 may be formed to protrude upward from the top of the first cover 441. The motor support plate 443 is disposed on the outer side of the second cover 442.

The top of the motor support plate 443 is disposed above the motor. More specifically, the top of the motor support plate 443 is disposed above the pinion 423.

One side of the motor support plate 443 supports the guide motor 420. One side of the motor support plate 443 may be formed with a protruding coupling portion to which the guide motor 420 is coupled. The motor support member 421 of the guide motor 420 is coupled to the coupling portion.

The other side of the motor support plate 443 supports the board guider 430. The other side of the motor support plate 443 is disposed on the same line as the front side of the first cover 441. The rear of the board guider 430 is simultaneously in contact with the front surface of the first cover 441 and the other surface of the motor support plate 443. The upper part of the board guider 430 is supported by the other side of the motor support plate 443 and engages with the pinion 423.

A third protrusion 4411 may be formed on the first cover 441. The third protrusion 4411 is disposed on the outside of the first cover 441. The side of the third protrusion 4411 and the outside of the board guider 430 face each other. The board guider 430 can slide along the third protrusion 4411. A coupling hole for fastening to the first outer wall 114 or the second outer wall 124 may be formed on the front surface of the third protrusion 4411.

The back of the board guider 430 is supported by the first cover 441. Additionally, the rear of the board guider 430 may also be supported by the motor support plate 443. One side of the board guider 430 is supported by the second cover 442. The other side of the board guider 430 is supported by the third protrusion 4411 formed on the first cover 441. The board guider 430 is supported on three sides, so it can move up and down stably.

The air flow converter 400 is disposed ahead of the first discharge port 117 or the second discharge port based on the air discharge direction. Air is discharged forward from the first discharge port 117 or the second discharge port. The Coanda effect occurs as air passes through the first inner wall 115 or the second inner wall 125. The air flow converter 400 is disposed on the first inner wall 115 or the second inner wall 125 to selectively change the wind direction. The airflow converter 400 can implement wide-area wind, concentrated wind, or upward airflow, depending on the degree of protrusion.

The driving method of the air flow converter 400 is explained as follows.

Referring to FIGS. 11, 12, and 16, when the guide motor 420 operates, the pinion 423 rotates, and the rack 436 engaged with the pinion 423 moves, thereby raising and lowering the board guider 430. . Referring to FIG. 16, when the guide motor 420 operates clockwise, the board guider 430 descends, and when the guide motor 420 operates counterclockwise, the board guider 430 rises.

11 and 15 show the guide board 410 protruding. In Figure 16, when the guide motor 420 operates clockwise, the board guider 430 descends. When the board guider 430 descends, the positions of the first slit 432 and the second slit 434 are also lowered. The second slit 434 slides down along the second protrusion 444, and the second slit bar 435 slides down along the groove 4441 of the second protrusion. As the position of the first slit 432 is lowered, the first protrusion 4111 gradually moves to the right, and the guide board 410 protrudes into the blowing space 105 through the board slit.

Figures 12 and 14 show the guide board 410 being retracted. In Figure 16, when the guide motor 420 operates counterclockwise, the board guider 430 rises. When the board guider 430 rises, the positions of the first slit 432 and the second slit 434 also increase. The second slit 434 slides upward along the second protrusion 444, and the second slit bar 435 slides upward along the groove 4441 of the second protrusion. As the position of the first slit 432 increases, the first protrusion 4111 gradually moves to the left, and the guide board 410 is introduced into the tower case 140 through the board slit.

Hereinafter, the heater 500 installed in the air clean fan will be described.

The heater 500 is a component that is disposed in the first discharge space 103a or the second discharge space 103b and heats the flowing air. The heater 500 heats the flowing air and discharges the heated air to the outside of the air clean fan.

Referring to Figures 1 and 2, the heater 500 may be placed in the first tower 110 or the second tower 120 of the air clean fan.

The heater 500 is arranged long in the upward-downward direction. The heater 500 is disposed in the longitudinal direction of the first tower 110 or the second tower 120. The heater 500 is disposed below the air flow converter 400.

Referring to FIG. 3, heaters 500 may be disposed in the first tower 110 and the second tower 120, respectively. The heater 500 disposed in the first tower 110 may be referred to as a first heater 501, and the heater 500 disposed in the second tower 120 may be referred to as a second heater 502. The first tower 110 and the second tower 120 may be formed symmetrically about the central axis, and the first tower 110 and the second tower 120 may be arranged symmetrically about the central axis.

The top of the heater 500 may be placed below the top of the guide board 410. The lower end of the heater 500 may be placed above the lower end of the guide board 410.

Referring to FIG. 4 , when viewed from above, the top of the heater 500 may be placed at the center of the first tower 110 or the second tower 120 in the front-back direction.

Referring to FIG. 5 , the top of the heater 500 is disposed ahead of the bottom of the heater 500. In other words, the heater 500 is disposed at an angle so that the lower end is located rearward than the upper end.

The heater 500 is disposed inside the tower case 140, upstream of the first discharge port 117 or the second discharge port. Upstream means that it is placed in the air inflow direction based on the air flow direction. That is, the heater 500 is disposed in the air inflow direction of the first discharge port 117 or the second discharge port. More specifically, the heater 500 is disposed in front of the first discharge port 117 or the second discharge port.

The heater 500 includes a heating tube 520 that emits heat, and a fin (530) that transfers heat from the heating tube 520.

The heating tube 520 is a component that receives energy and converts it into thermal energy to generate heat. The heating tube 520 can be connected to an electric device to receive electric energy, and is composed of a resistance to convert electric energy into heat energy. Alternatively, the heating tube 520 may be formed as a pipe through which a refrigerant flows inside, thereby heating the air by exchanging heat between the refrigerant flowing inside and the air flowing outside. In addition, the heating tube 520 includes heating elements within a range that can be easily changed by a person skilled in the art.

The heating tube 520 may be formed with an inclination. In more detail, the upper end of the heating tube 520 may be disposed ahead of the lower end.

The heating tube 520 may be formed in a U shape.

The fin (530) is connected to the heating tube 520 and is a component that transfers heat from the heating tube 520. Since the fin 530 has a large surface area, it can effectively transfer the heat transferred to the heating tube 520 to the flowing air.

The fin 530 changes the direction of air flow and guides the air to the first discharge port 117 or the second discharge port. Referring to FIG. 5, the suction port is disposed downward, and the first discharge port 117 and the second discharge port are disposed upward. Inside the first tower 110 and the second tower 120, the air forms a flow rising from the bottom to the top. The fin 530 converts the flow rising from the bottom to the top into the flow moving from the front to the rear.

The heater 500 includes a support member 510. The support member 510 is a component that supports the tube and heater 500. The support member 510 includes an upper horizontal plate 511, a vertical plate 512, and a lower horizontal plate 513.

The vertical plate 512 extends vertically.

A plurality of pins 530 are fixed to the vertical plate 512. The plurality of pins 530 extend in a direction crossing the extension direction of the vertical plate 512. For example, the vertical plate 512 may extend vertically, and the plurality of pins 530 may extend forward, backward, left, and right.

The heating tube 520 is arranged long along the extension direction of the vertical plate 512. The heating tube 520 may be arranged parallel to the vertical plate 512. Alternatively, the heating tube 520 may contact the vertical plate 512.

The vertical plate 512 may be formed with an inclination. In more detail, the upper end of the vertical plate 512 may be disposed ahead of the lower end.

The upper horizontal plate 511 is disposed at the top of the vertical plate 512. A plate that shields the guide motor 420 may be formed on the upper portions of the first tower 110 and the second tower 120, and an upper horizontal plate 511 may be fixed to the plate to support the heater 500. there is. When the plate that shields the guide motor 420 is horizontal to the ground, the upper horizontal plate 511 may be arranged parallel to the ground like the plate. Referring to Figure 5, when viewed from the side, the upper horizontal plate 511 is not perpendicular to the vertical plate 512. Referring to FIG. 6, the upper horizontal plate 511 is perpendicular to the vertical plate 512 when viewed from the front or rear.

The lower horizontal plate 513 is disposed at the lower end of the vertical plate 512. A vertical plate 512 is connected to the upper surface of the lower horizontal plate 513, and a flow path shielding member 540 is disposed on the lower surface of the lower horizontal plate 513. Unlike the upper horizontal plate 511, the lower horizontal plate 513 is perpendicular to the vertical plate 512. Referring to FIG. 5, the lower horizontal plate 513 is perpendicular to the vertical plate 512 when viewed from the side and is disposed not horizontally with respect to the ground. Referring to FIG. 6, the lower horizontal plate 513 is perpendicular to the vertical plate 512 even when viewed from the front.

Referring to FIG. 5 , the first discharge port 117 extends long in the longitudinal direction of the first tower 110, and the second discharge port extends long in the longitudinal direction of the second tower 120. A plurality of pins 530 are disposed along the longitudinal direction of the first discharge port 117 or the second discharge port. The first discharge port 117 and the second discharge port may be formed vertically and long in the longitudinal direction of the first tower 110 and the second tower 120. A plurality of heaters 500 may be arranged along the first outlet 117, and a plurality of heaters 500 may be arranged along the second outlet. A plurality of heaters 500 are disposed along the first outlet 117 and the second outlet, and can equally discharge air to the first outlet 117 and the second outlet.

Referring to FIG. 5, the pin 530 extends in a direction crossing the longitudinal direction of the first discharge port 117 or the second discharge port. Referring to FIG. 5, the first discharge port 117 and the second discharge port extend long from the top center to the bottom right. A plurality of pins 530 extend from the center to the upper right. The longitudinal direction of the first discharge port 117 and the second discharge port and the extension direction of the plurality of pins 530 may intersect each other. More specifically, the pin 530 may extend perpendicular to the longitudinal direction of the first discharge port 117 or the second discharge port.

A plurality of pins 530 are disposed in the longitudinal direction of the first discharge port 117 and the second discharge port, and extend in a direction perpendicular to the longitudinal direction of the first discharge port 117 and the second discharge port. Accordingly, the air flow changes direction toward the first discharge port 117 and the second discharge port following the guidance of the fin 530, and is distributed in equal amounts to the first discharge port 117 and the second discharge port formed long up and down. becomes and flows.

The heating tube 520 extends long along the longitudinal direction of the first discharge port 117 or the second discharge port, and the fin 530 may extend perpendicular to the direction in which the heating tube 520 extends.

Referring to FIG. 5 , the heating tube 520 may be placed on top of the heater 500. The heating tube 520 extends downward from the top of the heater 500. The heating tube 520 may be arranged parallel to the vertical plate 512 while being spaced apart from the vertical plate 512, or may extend while contacting the vertical plate 512. The heating tube 520 extends long along the longitudinal direction of the first discharge port 117 and the second discharge port.

Referring to Figure 5, the fin 530 extends perpendicular to the direction in which the heating tube 520 extends. For example, when the heating tube 520 forms an angle of approximately 4 degrees with the vertical axis V, the fin 530 may form an angle of approximately 4 degrees with the ground. At this time, the fins 530 extend perpendicular to the direction in which the heating tube 520 extends.

Referring to Figure 5, when viewed from the side, the heating tube 520 is disposed inclined with a constant inclination with respect to the vertical axis, and the vertical plate 512 is also disposed inclined with a constant inclination with the vertical axis, and the heating tube 520 is disposed inclined with a constant inclination with respect to the vertical axis. 520 and the vertical plate 512 are arranged in parallel. Additionally, the upper horizontal plate 511 is arranged parallel to the horizon. The lower horizontal plate 513 is disposed inclinedly with a constant inclination with respect to the horizon. The pin 530 is disposed inclinedly with a constant inclination with respect to the horizontal plane, and is disposed parallel to the lower horizontal plane.

Referring to FIG. 5, the heater 500 is disposed at an angle with respect to the vertical direction. The heater 500 is arranged parallel to the first outlet 117 or the second outlet 127.

The heater 500 may be arranged to be inclined to have an inclination (angle) of a3 with respect to the vertical direction. For example, the heater 500 may be arranged at an angle within a certain error range based on an angle of 4 degrees with respect to the vertical direction. Referring to FIG. 5, the second discharge port may be inclined to have an inclination of a1 with respect to the vertical direction. For example, the second discharge port may be arranged to be inclined within a certain error range based on an angle of 4 degrees with respect to the vertical direction. Although not shown in FIG. 5, it is obvious that the first discharge port 117 can also be arranged inclined to have an inclination of a1 with respect to the vertical direction.

The slope (a3) of the heater 500 may correspond to the following value. The inclination of the vertical axis (V) and the vertical plate 512 with respect to the ground. The vertical axis (V) with respect to the ground and the slope at which the heating tube 520 is confined. The inclination of the upper horizontal plate 511 and the vertical plate 512. Tilt of the pin 530 and the upper horizontal plate 511. Tilt between the pin 530 and the ground. The slope of the lower horizontal plate 513 and the ground.

The heater 500 is arranged parallel to the first discharge port 117 or the second discharge port in the vertical direction. In other words, the slope a3 of the heater 500 with respect to the vertical direction and the slope a1 of the first discharge port 117/second discharge port with respect to the vertical direction may be the same. The heater 500 is disposed parallel to the first discharge port 117 or the second discharge port, so that an equal amount of air guided by the fin 530 can flow to the first discharge port 117 or the second discharge port. .

Referring to FIGS. 9 and 10 , the first tower 110 is disposed toward the blowing space 105 and includes a first inner wall 115 on which a first discharge port 117 is formed. The second tower 120 is disposed toward the blowing space 105 and includes a second inner wall 125 on which a second discharge port is formed. The heater 500 is disposed to be spaced apart from the inner surface of at least one of the first inner wall 115 and the second inner wall 125. A space through which air can flow is formed between the heater 500 and the first inner wall 115, and air flows in the space. A space through which air can flow is formed between the heater 500 and the second inner surface, and air flows in the space. Air flows between the heater 500 and the inner surface, forming an air wall. Therefore, the heat emitted from the heater 500 cannot be convected to the first inner wall 115 or the second inner wall 125, and the first inner wall 115 and the second inner wall 125 are prevented from overheating. prevent.

9 and 10, the first tower 110 includes a first outer wall 114 formed on the outer side of the first inner wall 115. The second tower 120 includes a second outer wall 124 formed on the outer side of the second inner wall 125. The heater 500 is disposed to be spaced apart from the inner surface of the first outer wall 114 or the second outer wall 124. A space through which air can flow is formed between the heater 500 and the inner surface of the first outer wall 114, and air flows in the space. A space through which air can flow is formed between the heater 500 and the inner surface of the second outer wall 124, and air flows in the space. Air flows between the heater 500 and the inner surface of the outer wall, forming an air wall. Accordingly, the heat emitted from the heater 500 cannot be convected to the first outer wall 114 or the second outer wall 124, and the first outer wall 114 and the second outer wall 124 are prevented from overheating.

Referring to FIGS. 9 and 10 , the heater 500 is disposed closer to the first inner wall 115 than the first outer wall 114 . The heater 500 is disposed closer to the second inner wall 125 than to the second outer wall 124. Air discharged from the first discharge port 117 flows at high speed through the first inner wall 115, and air discharged from the second discharge port flows at high speed through the second inner wall 125. As air flows at high speed through the first inner wall 115 and the second inner wall 125, forced convection occurs and the first inner wall 115 and the second inner wall 125 are cooled more quickly. You can. However, air flows at a slow speed through the first outer wall 114 and the second outer wall 124 due to the indirect Coanda effect. Accordingly, the cooling rate of the first outer wall 114 is slower than that of the first inner wall 115, and the cooling rate of the second outer wall 124 is slower than that of the second inner wall 125. Accordingly, by placing the heater 500 closer to the first inner wall 115 or the second outer wall 124, overheating of the tower case 140 can be prevented more efficiently.

Referring to FIG. 5 , the lower end of the heater 500 is disposed closer to the rear lower end of the first tower 110 or the second tower 120 than the front lower end. Therefore, the cross-sectional area of the discharge space 103 is larger at the bottom than at the top.

The amount of air flowing at the bottom of the first tower or the second tower 120 is maximum, and as it moves toward the top, it passes through the heater 500 and is discharged into the blowing space 105, and the air flows through the first tower 110 or the second tower 110. The amount of air flowing at the top of 120 is minimal. The lower end of the heater 500 may be placed closer to the rear lower end of the first tower 110 or the second tower 120 than the front lower end to form the discharge space 103 appropriate for the air flow rate. Therefore, by compensating for the pressure difference, pressure loss can be prevented and efficiency can be improved.

The heater 500 further includes a flow path shielding member 540 that blocks air from flowing between the fin 530 and the first outlet 117 or the second outlet. Referring to FIG. 5 , the flow path shielding member 540 is disposed at the bottom of the heater 500 and extends toward the bottom of the first discharge port 117 or the second discharge port.

The flow path shielding member 540 is disposed inside the tower case 140. The lower end of the flow path shielding member 540 is disposed above the suction grill.

The flow path shielding member 540 is inclined so that the rear end is disposed higher than the front end.

The flow path shielding member 540 extends to the rear end of the first tower 110 or the second tower 120.

The lower end of the first outlet 117 or the second outlet is disposed on the upper part of the flow path shielding member 540.

As shown in FIG. 7, the flow path shielding member 540 extends left or right from the front end of the lower horizontal plate 513, and also extends rearward. Therefore, it may be formed in a semicircular shape. Alternatively, the flow path shielding member 540 may be formed to have the same width as the lower horizontal plate 513 and extend to the rear end, as shown in FIG. 5 .

The flow path shielding member 540 prevents the air flowing in the first discharge space 103a or the second discharge space 103b from being discharged directly to the first discharge port 117 or the second discharge port without passing through the heater 500. prevent. In more detail, the flow path shielding member 540 shields the rear bottom, left bottom, and right bottom of the heater 500 and the inner side of the first tower 110, and the rear bottom, left bottom, and right sides of the heater 500. The lower end and the inner side of the second tower 120 are shielded. Accordingly, the air flow directly discharged from the rear bottom, left bottom, and right bottom of the heater 500 to the first discharge port 117 or the second discharge port is shielded, thereby improving efficiency.

20 to 22, the air clean fan according to another embodiment of the present invention includes, in addition to the heater 500, an air guide 160 that guides the redirected air to the first discharge port 117 or the second discharge port. More may be included.

The air guide 160 is a component that changes the flow direction of air in the discharge space 103 to the horizontal direction. A plurality of air guides 160 may be arranged.

The air guide 160 changes the direction of air flowing from the bottom to the top in the horizontal direction, and the changed air flows to the discharge ports 117 and 127.

When it is necessary to classify the air guide 160, the one placed inside the first tower 110 is called the first air guide 161, and the one placed inside the second tower 120 is called the second air guide 162. It is said that

The outer end of the first air guide 161 is coupled to the outer wall of the first tower 110. The inner end of the first air guide is adjacent to the first heater (501).

The front end of the first air guide 161 is close to the first discharge port 117. The front end of the first air guide may be coupled to the inner wall adjacent to the first discharge port 117. The rear end of the first air guide is spaced apart from the rear end of the first tower 110.

In order to guide air flowing from the lower side to the first outlet 117, the first air guide 161 is formed as a convex curved surface from the lower side to the upper side, and the rear end is disposed lower than the front end.

The first air guide 161 may be divided into a curved portion 161f and a flat portion 161e.

The rear end of the flat portion 161e of the first air guide 161 is close to the first discharge guide. The flat portion 160e of the first air guide extends forward, and more specifically, may extend horizontally to the ground.

The rear end of the curved portion 161f of the first air guide is disposed on the flat portion of the first air guide. The curved portion 160f of the first air guide extends downward to the front while forming a curved surface. The front end of the curved portion 160f of the first air guide is disposed lower than the rear end. The front and rear ends of the curved portion 160f of the first air guide may be formed at a horizontal distance between 10 mm and 20 mm from the ground. The horizontal distance between the front and rear ends of the curved portion 160f of the first air guide from the ground is defined as the curvature length. That is, the curvature length of the curved portion of the first air guide may be between 10 mm and 20 mm.

The entrance angle a4 at the front end of the curved portion 160f of the first air guide may be formed at 10 degrees. The entrance angle (a4) is defined as the angle between the vertical line with respect to the ground and the tangent of the front end of the curved portion 160f of the first air guide.

At least part of the right end of the first air guide 161 is adjacent to the outside of the heater 500, and the remaining part is coupled to the inner wall of the first tower 110. The left end of the first air guide 161 may be in close contact with or coupled to the outer wall of the first tower 110.

Therefore, the air moving upward along the discharge space 103 flows from the rear end to the front end of the first air guide 161. In other words, the air passing through the fan device 300 rises and flows backward guided by the first air guide 161.

The second air guide 162 is left and right symmetrical to the first air guide 161.

The outer end of the second air guide 162 is coupled to the outer wall of the second tower 120. The inner end of the second air guide 162 is adjacent to the second heater 502.

The front end of the second air guide 162 is close to the second discharge port 127. The front end of the second air guide 162 may be coupled to the inner wall adjacent to the second discharge port. The rear end of the second air guide 162 is spaced apart from the rear end of the second tower 120.

In order to guide the air flowing from the lower side to the second outlet 127, the second air guide 162 is formed as a convex curved surface from the lower side to the upper side, and the rear end is disposed lower than the front end.

The second air guide 162 may be divided into a curved portion 162f and a flat portion 162e.

The rear end of the flat portion 162e of the second air guide is close to the second discharge guide. The flat portion of the second air guide extends forward, and more specifically, may extend horizontally to the ground.

The rear end of the curved portion 162f of the second air guide is disposed at the front end of the flat portion 162e of the second air guide. The curved portion 162f of the second air guide extends downward to the front while forming a curved surface. The front end of the curved portion 162f of the second air guide is disposed lower than the rear end. The front and rear ends of the curved portion 162f of the second air guide may be formed at a horizontal distance between 10 mm and 20 mm from the ground. The horizontal distance between the front and rear ends of the curved portion 162f of the second air guide from the ground is defined as the curvature length. That is, the curvature length of the curved portion 162f of the second air guide may be between 10 mm and 20 mm.

The entrance angle a4 at the front end of the curved portion 162f of the second air guide may be formed at 10 degrees. The entrance angle (a4) is defined as the angle between the vertical line with respect to the ground and the tangent of the front end of the curved portion of the second air guide.

At least part of the left end of the second air guide 162 is adjacent to the outside of the second heater 502, and the remaining part is coupled to the inner wall of the second tower 120. The right end of the second air guide 162 may be in close contact with or coupled to the outer wall of the second tower 120.

Therefore, the air moving upward along the discharge space 103 flows from the rear end to the front end of the second air guide 162. In other words, the air passing through the fan device 300 rises and flows backward guided by the second air guide 162.

When installing the air guide 160, the air rising in the vertical direction is diverted to the horizontal direction. Therefore, there is an advantage that air can be discharged at a uniform flow rate from the air discharge port formed long up and down. Additionally, there is an effect of being able to discharge air horizontally.

If the inlet angle (a4) of the air guide 160 is large or the curvature length is long, there is a problem that noise increases by acting as resistance to air rising in the vertical direction. Conversely, if the curvature length of the air guide is short, it does not play a role in guiding the air, making horizontal discharge impossible. Therefore, when arranged at an inlet angle (a4) or formed at a curvature length according to the present invention, there is an effect of increasing wind volume and reducing noise.

Figure 25 shows a graph to explain the difference in effect between the air guide according to the present invention and the prior art.

The upper graph of Figure 25 shows the amount of air discharged compared to the rotation speed of the fan according to the inlet angle (a4) of the air guide. Although not mentioned in FIG. 25, the curvature length of the curved portion of the air guide may also have an effect. When the rotation speed of the fan is low, there is no significant difference, but when the rotation speed of the fan increases, there is a difference in the amount of air discharged. For example, when the rotation speed of the fan is 2500 RPM, the flow rate discharged from the air purifier according to the prior art is about 13.4 CMM, but the flow rate discharged from the air purifier with the air guide according to the present invention is found to be about 14 CMM. . According to the present invention, when the fan is based on the same RPM, the air volume increases by about 4% compared to the prior art.

The lower graph of FIG. 25 shows the noise generated compared to the air volume of the fan according to the inlet angle (a4) of the air guide. Although not mentioned in Figure 25, the curvature length of the curved portion of the air guide may also have an effect. When the discharged air volume is low, there is no significant difference, but when the air volume increases, there is a difference in the noise generated. For example, when the wind volume is 10.0 CMM, the noise generated from the air purifier according to the prior art is about 40.5 dB, but the noise generated from the air purifier with the air guide according to the present invention is found to be about 40 dB. Based on the same wind volume, according to the present invention, the noise generated is reduced by about 0.5 dB compared to the prior art.

The air flow converter 400 may be placed above the heater 500. More specifically, the guide motor 420 may be placed above the heater 500. The guide motor 420 generates driving force, the guide board 410 changes the discharged air, and the board guider 430 transmits the driving force of the guide motor 420 to the guide board 410. The guide board 410 and the board guider 430 may be placed in front of the heater 500, but the guide motor 420 is placed above the heater 500. Therefore, space can be utilized efficiently and the guide motor 420 is prevented from interfering with the air flow inside the discharge space 103. The guide motor 420 is a component that generates heat and has the disadvantage of being vulnerable to heat. Therefore, by placing the guide motor 420 above the heater 500, it is not placed in the air passage, and it is possible to prevent heat from the heater 500 from convecting to the guide motor 420.

Hereinafter, with reference to FIG. 19, the air flow around the heater as seen from the top will be described. The air that passes through the fan device 300 rises in front of the heater. The flow direction of air rising in front of the heater changes to the rear. Most of the air passes through the heater and is heated, and the warm air is discharged into the blowing space. Some air flows in the space between the heater and the outer walls 114 and 124. This air forms an air curtain between the heater and the outer wall, preventing convection of heat from the heater to the outer wall. Some other air flows into the space between the heater and the inner wall. This air forms an air curtain between the heater and the inner wall, preventing convection of heat from the heater to the inner wall.

Figure 23 is an exemplary diagram showing the horizontal airflow of the air clean fan according to the first embodiment of the present invention.

Referring to FIG. 23, when providing a horizontal airflow, the first guide board 411 is hidden inside the first tower 110, and the second guide board 412 is hidden inside the second oval 120. .

The discharge air from the first discharge port 117 and the discharge air from the second discharge port 127 may join in the blowing space 105 and flow forward through the front ends 112 and 122.

Additionally, the air behind the blowing space 105 may be introduced into the blowing space 105 and then flow forward.

Additionally, the air around the first tower 110 may flow forward along the first outer wall 114, and the air around the second tower 120 may flow forward along the second outer wall 124. can flow.

Since the first outlet 117 and the second outlet 127 are formed to extend long in the vertical direction and are arranged symmetrically left and right, the air flowing from the upper side of the first outlet 117 and the second outlet 127 The air flowing from the bottom can be formed more uniformly.

In addition, the air discharged from the first discharge port and the second discharge port merge in the blowing space 105, thereby improving the straightness of the discharge air and allowing the air to flow to a greater distance.

Figure 24 is an exemplary diagram showing the upward airflow of the air clean fan according to the first embodiment of the present invention.

Referring to FIG. 24, when an upward airflow is provided, the first guide board 411 and the second guide board 412 protrude into the blowing space 105 and block the front of the blowing space 105.

As the front of the blowing space 105 is blocked by the first guide board 411 and the second guide board 412, the air discharged from the discharge ports 117 and 127 is directed to the first guide board 411 and the second guide board 412. It rises along the rear of the second guide board 412 and is discharged to the top of the blowing space 105.

By forming an upward airflow in the airflow fan (1), discharge air can be prevented from flowing directly toward the user. Additionally, when it is desired to circulate indoor air, the air clean fan (1) can be operated with an upward airflow.

For example, when using an air conditioner and an air clean fan at the same time, the air clean fan (1) can be operated with an upward airflow to promote convection of indoor air, and the indoor air can be cooled or heated more quickly.

Figure 26 shows a graph to explain the difference in effect depending on the angle of the heater in the air guide according to the present invention.

The upper graph of FIG. 26 shows the amount of air discharged compared to the rotation speed of the fan according to the inclination (a3) of the heater. When the fan's rotation speed is low, there is no significant difference, but when the fan's rotation speed increases, there is a difference in the amount of air discharged. For example, when the rotation speed of the fan is between 2500 RPM and 3000 RPM, the air volume increases by about 3% when the heater is tilted by a3 compared to when the heater is vertical.

The lower graph of FIG. 26 shows the noise generated compared to the fan's air volume according to the heater's inclination (a3). When the discharged air volume is low, there is no significant difference, but when the air volume increases, there is a difference in the noise generated. For example, when the wind speed is between 12 CMM and 14 CMM, the noise generated when the heater is tilted by a3 is reduced by about 1 dB compared to when the heater is vertical.

A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. must be interpreted.

100: Case 110: First Tower
114: first outer wall 115: first inner wall
117: first discharge port 119: first board slit
120: 2nd tower 124: 2nd outer side wall
125: second inner wall 127: second discharge port
129: Second board slit
130: Tower base 140: Tower case
150: Base case 160: Air guide
170: first discharge case 180: second discharge case
200: Filter 300: Fan device
400: Airflow converter 410: Guide board
420: Guide motor 421: Motor support member
422: Shaft 423: Pinion
430: Board guider 432: First slit
434: second slit 435: second slit bar
436: Rack
440: Air flow converter cover 441: First cover
4411: Third projection 442: Second cover
443: Motor support plate 444: Second projection
500: Heater 510: Support member
520: Heating tube 530: Fin
540: Euro shielding member

Claims (18)

A base case formed with an intake port through which air is sucked;
a tower case disposed above the base case and having a first tower and a second tower spaced laterally;
a blowing space formed between the spaced apart first and second towers;
a first discharge port formed in the first tower to be long in the vertical direction and discharging the sucked air into the blowing space;
a second discharge port formed in the second tower to be long in the vertical direction and discharging the sucked air into the blowing space;
An airflow converter disposed on at least one of the first tower and the second tower and changing the direction of air flowing through the blowing space,
The airflow converter,
A guide board extending long in the vertical direction and arranged at an angle with respect to the upper and lower axes (V);
Includes a motor that moves the guide board,
The guide board is,
It moves from a first position hidden inside at least one of the first tower or the second tower to a second position protruding forward of the blowing space and simultaneously rises or falls, and moves from the second position to the first position. A blower that moves and simultaneously lowers or rises. According to paragraph 1,
The airflow converter,
a pinion connected to the shaft of the motor and rotating;
A board guider having a rack engaged with the pinion and moving in an upward and downward direction and having a plurality of first slits spaced apart upward and downward,
The guideboard is,
Provided with a plurality of first protrusions each inserted into the plurality of first slits,
The plurality of first slits are,
extends in a diagonal direction oblique to the moving direction of the board guider,
A blower in which the guide board slides along the diagonal direction and protrudes into the blowing space as the motor operates. According to paragraph 2,
The first and second discharge ports are disposed close to the rear ends of the first and second towers, respectively,
The guide board is a blower disposed close to a front end of at least one of the first tower and the second tower. According to paragraph 3,
The guide board is arranged to be inclined toward the first and second discharge holes,
The board guider is a blower arranged to be tilted backward and parallel to the guide board. According to paragraph 3,
The board guider is disposed at the rear of the guide board,
The motor is a blower disposed at the rear of the board guider. According to clause 5,
The first and second towers and the blowing space have an overall truncated cone shape,
The guide board has an arc shape with a curvature of the circumferential surface of the truncated cone,
A blower where the front of the board guider is a curved surface having the curvature of the circumferential surface of the truncated cone. According to clause 6,
The rear of the board guider is flat,
The rack is a blower placed at the rear of the board guider. In clause 7,
The board guider is a blower whose outer end is thicker than the inner end based on the protruding direction of the guide board. According to clause 5,
Each of the plurality of first slits,
The width of the rear end is formed to be larger than the width of the front end, forming a chin in between,
Each of the plurality of first protrusions,
A blower having a locking portion formed at the rear end to be caught by the chin. According to clause 9,
Each of the plurality of first slits,
an inclined portion forming an inclination in the diagonal direction;
A blower including a vertical portion extending upward from the top of the inclined portion. According to clause 10,
Each of the plurality of first slits,
The blower further includes a first protrusion insertion portion formed at the top of the vertical portion and having a cross section corresponding to a cross section of the locking portion. According to paragraph 2,
The plurality of first protrusions are a blower disposed on an inner end of the guide board based on the protruding direction of the guide board. According to paragraph 2,
Each of the plurality of first slits is shaped so that the side closer to the blowing space is higher than the side farther away from the blowing space,
When the board guider descends, the guide board protrudes into the blowing space and descends, and when the board guider rises, the guide board rises while being retracted into at least one of the first tower and the second tower. According to paragraph 2,
The rack is a blower disposed above the plurality of first slits. According to paragraph 2,
A blower in which the plurality of first slits are aligned in a vertical direction. According to paragraph 2,
In the board guide,
A plurality of second slits extending in the vertical direction are formed,
The blower is,
Further comprising a cover that secures the motor to at least one of the first tower and the second tower, and has one side facing the board guider,
The cover is,
A blower including a plurality of second protrusions that protrude from the one surface toward the board guider and are respectively inserted into the plurality of second slits to guide the vertical movement of the board guider. According to clause 16,
A blower in which the plurality of second slits are arranged to intersect with the plurality of first slits in a vertical direction. According to clause 16,
Each of the plurality of second protrusions,
At least a portion of the upper surface is formed by being recessed downward and further includes a second protruding groove spaced apart from the lower surface,
Each of the plurality of second slits,
A blower extending horizontally and further comprising a bar inserted into the second protrusion groove.

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