KR102518294B1 - Fan apparatus for Air conditioner - Google Patents

Abstract

The present invention includes a tower case including a first tower discharging sucked air and a second tower spaced apart from the first tower and discharging sucked air; a blowing space located between the first tower and the second tower and providing a space in which air discharged from the first tower and the second tower flows; and an air current converter that closes at least a portion of the blowing space or opens the blowing space to change a direction of air flowing through the blowing space, wherein the air flow converter is disposed on the tower case and has a driving force. A guide motor providing a guide motor, a space board installed in the tower case and reciprocating between the blowing space and the inside of the tower case, a board connected to the space board and transmitting the driving force of the guide motor to the space board as a linear motion force The guider 430 and the board guider 430 and the space board are separated from each other to prevent surface contact, and friction reduction protrusions are included to reduce friction generated during movement of the space board.

Description

Fan apparatus for air conditioner {Fan apparatus for Air conditioner}

The present invention relates to a fan device for an air conditioner capable of changing a path of air discharged through the Coanda effect and a discharge shape of the air.

In general, a blower is a mechanical device that causes air flow by driving a fan. Conventional blowers include a fan rotating around a rotation shaft, and a motor rotates the fan to generate wind.

A conventional fan using an axial flow fan has the advantage of providing wind in a wide range, but has a problem in that it cannot provide wind intensively in a narrow area.

Japanese Patent Publication No. 2019107643 discloses a fan that provides wind to a user using the Coanda effect.

In the case of a conventional fan, a technique for adjusting the path of discharged air or changing the shape of discharged air through the Coanda effect has not been disclosed. Therefore, in the case of the conventional fan, there are problems in that the flow rate of the discharged air is very weak, the direction of the discharged air cannot be changed, and it is difficult for the discharged air to reach a user in a remote place.

Chinese Utility Model Publication No. 202392959 discloses a general damper structure of an air conditioner. Specifically, the vane or the door is rotated by the driving force of the motor to open and close the outlet through which air is discharged. In this structure, due to the rotation radius of the door, there is a problem that the door protrudes from the main body when opening and closing, and there is a problem that various air currents cannot be formed.

Japanese Patent Laid-Open No. 2019107643 China Public Utility Model No. 202392959

An object to be solved by the present invention is to provide a fan device for an air conditioner that discharges air discharged through a discharge port in various directions and in various shapes.

In addition, another problem to be solved by the present invention is to provide a fan device for an air conditioner that reduces the burden of a guide motor by reducing friction between a moving space board and other components to shield a blowing space where air is discharged.

In addition, another problem to be solved by the present invention is to provide a fan device for an air conditioner that reduces the detent torque of the guide motor generated due to the weight of the space board in a state in which the power of the guide motor is turned off.

In addition, another problem to be solved by the present invention is to provide a fan device for an air conditioner that stably guides a space board to reduce vibration and noise.

In addition, the problem to be solved by the present invention is to firmly couple the cover and the main body without play, and when separating the cover and the main body, an air conditioner fan that can easily separate the main body and the cover by applying an external force to the cover separation unit to provide the device.

The present invention is characterized by a structure in which the space board selectively shields the blowing space.

In addition, the present invention features friction reducing projections that reduce friction between the space board and other components.

The invention also features rollers that reduce friction between the space board and the case.

Specifically, the present invention is a tower case including a first tower for discharging sucked air, and a second tower spaced apart from the first tower and discharging sucked air; a blowing space located between the first tower and the second tower and providing a space in which air discharged from the first tower and the second tower flows; and an air current converter that closes at least a portion of the blowing space or opens the blowing space to change a direction of air flowing through the blowing space, wherein the air flow converter is disposed on the tower case and has a driving force. A guide motor providing a guide motor, a space board installed in the tower case and reciprocating between the blowing space and the inside of the tower case, a board connected to the space board and transmitting the driving force of the guide motor to the space board as a linear motion force It is characterized in that it includes a guider and a friction reducing protrusion preventing surface contact by spaced apart between the board guider and the space board.

The friction reducing protrusion is formed on the board guider, protrudes from a surface facing the space board, and may contact the space board.

The friction reducing protrusion is formed on the space board, protrudes from a surface facing the board guider, and may contact the space board.

The space board may move in a first direction, and the friction reducing protrusion may extend in the first direction.

The first direction may be a horizontal direction.

A plurality of the friction reducing protrusions may be spaced apart from each other in a second direction crossing the first direction.

The air current converter may further include a roller installed on one of the tower case and the space board to separate the tower case and the space board.

The roller may be located under the space board.

The airflow converter may further include a guide pin installed on one of the tower case and the space board to separate the tower case and the space board.

The board guider may include a first slit for guiding movement of the space board, and at least a portion of the space board may include a first protrusion inserted into the first slit and sliding along the first slit. can

The first slit may include a slit inclined portion inclined downward from a horizontal direction toward the blowing space.

The first slit may include a slit inclined portion in which a portion close to the blowing space has a lower height than a portion farther from the blowing space.

The first slit may further include a vertical portion having a lower end connected to an upper end of the slit inclined portion and extending in a longitudinal direction of the board guider.

The airflow converter may include a pinion gear coupled to the shaft of the guide motor and a rack connected to the pinion gear and transmitting linear motion to the board guider with rotational force of the guide motor.

The rack may be formed on a rear surface opposite to a surface facing the space board in the board guider.

The first outlet formed in the first tower extends in a second direction, the second outlet formed in the second tower extends in the second direction, and the board guider may move along the second direction.

The airflow converter may further include a guide body for guiding movement of the board guider.

The guide body may further include a body protrusion protruding in a direction crossing the longitudinal direction of the guide body, and the board guider may further include a second slit into which the body protrusion is inserted and guided.

In addition, the present invention is a tower case including a first tower for discharging sucked air, and a second tower spaced apart from the first tower and discharging sucked air, between the first tower and the second tower. and a blowing space providing a space in which the air discharged from the first tower and the second tower flows, and an air flow converter for changing the direction of the air flowing through the blowing space, wherein the air flow converter has a driving force A guide motor providing a, a space board reciprocating between the blowing space and the inside of the tower case, a board guider connected to the space board, and transmitting the driving force of the guide motor to the space board as a linear motion force, and the tower case and the A space board may be spaced apart and a roller installed on one of the tower case and the space board may be included.

The space board further includes a first protrusion guided by a slit formed in the board guider, the roller is installed on the space board, and the roller and the first protrusion are biased to one side in the width direction of the space board. It can be.

The fan device for an air conditioner according to the present invention has one or more of the following effects.

The present invention has the advantage that the space board selectively shields the blowing space, so that the air discharged through the discharge port is discharged in various directions and in various forms.

In addition, the present invention can reduce the friction between the space board and the board guider and reduce the burden on the guide motor by forming friction-reducing protrusions parallel to the moving direction of the space board on the surface where the space board and the board guider contact each other, The size of the guide motor can be reduced.

In addition, by installing rollers on the space board, the present invention can reduce friction between the space board and the case, reduce the burden on the guide motor, and reduce the size of the guide motor.

In addition, the present invention forms the inclination of the slit of the board guider for guiding the space board downward in the direction of the blowing space, so that the detent torque of the guide motor generated due to the weight of the space board in a state where the power of the guide motor is turned off ( There is an advantage of reducing detent torque).

In addition, the present invention makes the cover and the main body tightly coupled without a gap, so that the user's aesthetic sense can be improved in the state in which the cover and the main body are coupled, and when the cover and the main body are separated, an external force is applied to the cover separation unit to There is an advantage that the cover can be easily separated.

In addition, the present invention induces the Coanda effect for the air discharged from the first tower and the air discharged from the second tower, respectively, and then merges and discharges them in the blowing space, thereby increasing the straightness and reach of the discharged air There are advantages to doing so.

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 a fan device for an air conditioner according to an embodiment of the present invention;
Figure 2 is an example of the operation of Figure 1;
Figure 3 is a front view of Figure 2;
Figure 4 is a plan view of Figure 3;
5 is a right cross-sectional view of FIG. 2;
Figure 6 is a front cross-sectional view of Figure 2;
Figure 7 is a partially exploded perspective view showing the inside of the second tower of Figure 2;
8 is a right side view of FIG. 7;
9 is a perspective view of the fan unit for the air conditioner of FIG. 1 viewed from another direction;
10 is a perspective view showing a filter separated from the case of FIG. 9;
11 is a cross-sectional perspective view taken along line A-A' of FIG. 9;
12 is a view showing the operation of FIG. 11;
13 is a view showing the operation of FIG. 9 in a state in which the cover and the case are coupled;
14 is a plan sectional view taken along line IX-IX of FIG. 3;
15 is a bottom cross-sectional view taken along line IX-IX in FIG. 3;
16 is a perspective view showing a first state of the air flow converter;
17 is a perspective view showing a second state of the air flow converter;
18 is an exploded perspective view of the air flow converter;
19 is a front view showing a state in which the space board is excluded from the air flow converter;
20 is a front view showing a state in which the space board is installed in FIG. 19;
21 is a side cross-sectional view of the air flow converter;
22 is a view showing the rear surface of the space board of the air flow converter;
23 is a cross-sectional view of the air current converter in a state in which a second protrusion is inserted into a second slit;
24 is a plan cross-sectional view briefly showing the flow direction of air according to the position of the space board;
24 is a front cross-sectional view of FIG. 2 according to another embodiment of the present invention;
25 is a partially exploded perspective view showing the inside of the second tower of FIG. 24;
26 is a right side view of FIG. 25;
27 is an exemplary view showing horizontal airflow of the fan unit for an air conditioner according to the present invention;
28 is an exemplary view showing the ascending air flow of the fan device for an air conditioner according to the present invention;
29 is a perspective view showing the fan of the present invention;
30 is an enlarged view of the leading edge portion of FIG. 29;
31 is a cross-sectional view taken along line C1-C1′ of FIG. 30;
32 is a view showing the flow of air passing through the notch portion of the leading edge in FIG. 29;
33 is experimental data comparing sharpness according to air volume in Examples of Comparative Examples;
34 is experimental data comparing noise according to air volume in Examples of Comparative Examples.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

FIG. 1 is a perspective view of a fan device for an air conditioner according to an embodiment of the present invention, FIG. 2 is an exemplary operation view of FIG. 1 , FIG. 3 is a front view of FIG. 2 , and FIG. 4 is a plan view of FIG. 3 .

Referring to FIGS. 1 to 4 , a fan device 1 for an air conditioner according to an embodiment of the present invention includes a case 100 providing an outer appearance. The case 100 includes a base case 150 in which a filter 200 is installed, and a tower case 140 discharging air through the Coanda effect.

And the tower case 140 includes a first tower 110 and a second tower 120 that are separated and disposed in the form of two pillars. In this embodiment, the first tower 110 is disposed on the left side, and the second tower 120 is disposed on the right side.

In this specification, the vertical direction is defined as a direction parallel to the rotation axis direction of the fan 320 . The upper direction (vertical direction) is a direction in which the tower case 140 is located in the case 100, and the lower direction means a direction in which the base case 150 is located in the case 100.

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 in the front, rear and upper directions, and the upper and lower ends of the blowing space 105 are equally spaced apart.

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 outlets 117 and 127 respectively disposed in the first tower 110 and the second tower 120 discharge air to the blowing space 105 . When it is necessary to distinguish the outlets, the outlet formed in the first tower 110 is referred to as the first outlet 117, and the outlet formed in the second tower 120 is referred to as the second outlet 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 an air discharge direction.

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

That is, the air discharge direction crossing 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 a vertical direction.

Air flowing in the first air discharge direction S1 is referred to as a horizontal airflow, and air flowing in the second air discharge direction S2 is referred to as an updraft.

It should be understood that the horizontal air flow has a greater flow rate of air flowing in the horizontal direction rather than meaning that air flows only in the horizontal direction. Similarly, it should be understood that the flow rate of the air flowing in the upward direction is greater rather than the meaning that the air flows only in the upward direction.

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

By forming 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, when the width of the upper side is different from the width of the lower side, the flow speed of the wide side may be formed low, and deviation of the speed may occur based on the vertical direction. When air velocity deviation occurs in the vertical direction, the reach length of air may vary.

Air discharged from the first discharge port and the second discharge port may flow to the user after being joined in the blowing space 105 .

That is, in this embodiment, the discharge air of the first discharge port 117 and the discharge air of the second discharge port 127 do not individually flow to the user, and the discharge air of the first discharge port 117 and the discharge air of the second discharge port 127 ) After joining the discharge air in the blowing space 105, it is provided to the user.

The blowing space 105 may be used as a space in which discharged air is joined and mixed. In addition, the air at the rear of the blowing space can also flow into the blowing space by the discharged air discharged into the blowing space 105 .

Since the discharge air of the first discharge port 117 and the discharge air of the second discharge port 127 are joined in the blowing space, the straightness of the discharge air can be improved. In addition, by merging the discharge air of the first discharge port 117 and the discharge air of 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 lower side to the upper side.

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

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 113 of the first tower 110 And the rear end 123 of the second tower 120 is also spaced apart.

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

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 120 The inner walls 125 of the are opposed to each other.

When it is necessary to divide the inner walls 115 and 125, the inner surface of the first tower is referred to as the first inner wall 115, and the inner surface of the second tower is referred to as the second inner wall 125.

Similarly, 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 in which air flows. The second outer side wall 124 is formed on the outer side of the second inner side wall 125 . The first outer wall 124 and the first inner wall 125 form a space in 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-back direction, and the second inner wall 125 and the second outer wall 124 are formed in a streamlined shape in the front-back direction.

The first outlet 117 is disposed on the first inner wall 115 , and the second outlet 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 referred to as B0. The discharge ports 117 and 127 are located on the rear side 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 tower The separation distance of the rear end 123 of 120 is referred to as the second separation distance B2.

In this embodiment, B1 and B2 are formed identically. Unlike the present embodiment, any one of B1 or B2 may be formed longer.

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

The first discharge port 117 and the second discharge port 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 B0.

The closer the discharge port 117 or 127 is to the rear end 113 or 123, the easier it is to control the air flow through the Coanda effect 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 inner wall 125 of the second tower 120 The outer wall 124 of 120 indirectly provides the Coanda effect.

The inner walls 115 and 125 directly guide the air discharged from the outlets 117 and 127 to the front end 112 and 122.

That is, the air discharged from the outlets 117 and 127 is directly provided with horizontal air flow.

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

The outer walls 114, 124 induce the Coanda effect for the indirect airflow and guide the indirect airflow to the front end 112, 122.

The left side of the blowing space is blocked by the first inner wall 115 and 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 air flow converter described later may convert a horizontal air flow passing through the blowing space into an upward air flow, and the air flow may flow to an open upper side of the blowing space. The ascending air current can suppress direct flow of discharged air to the user and actively convect the indoor air.

In addition, the width of the discharge air can be adjusted through the flow rate of the air joined in the blowing space.

By forming the upper and lower lengths of the first discharge port 117 and the second discharge port 127 much longer than the left and right widths (B0, B1, B2) of the blowing space, the discharge air of the first discharge port and the discharge air of the second discharge port are blown You can induce them to join in space.

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

The tower case 140 includes a first tower 110 and a 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 integrally manufactured with the first tower 110 and the second tower 120 .

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

The base case 150 forms the lower part of the fan unit 1 for the air conditioner, and the tower case 140 forms the upper part of the fan unit 1 for the air conditioner.

The fan device 1 for an air conditioner may suck 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 fan unit 1 for an air conditioner has a columnar shape with a diameter decreasing toward the top. The fan device 1 for an air conditioner may have a cone or truncated cone shape as a whole.

Unlike the present embodiment, the fan device 1 for an air conditioner may include both towers. In addition, unlike the present embodiment, it may not be a shape in which the cross section becomes narrower toward the upper side.

However, when the cross section becomes narrower toward the upper side as in the present embodiment, there is an advantage in that the center of gravity is lowered and the risk of overturning due to external impact is reduced. For convenience of assembly, in this embodiment, the base case 150 and the tower case 140 are separately manufactured.

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

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

The outer surfaces of the base case 150 and the tower case 140 are formed in reverse speed. 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 equal to or slightly smaller than the top diameter of the base case 150 .

The tower base 130 distributes the 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, discharge ports 117 and 127 are disposed on the upper side of the tower base 130, and rising air currents and horizontal air currents are formed on the upper side of the tower base 130.

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

Referring to FIG. 4, when viewed from a top view, 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 discharge port 117 and the second discharge port 127 are disposed 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 is disposed in the front-back direction in this embodiment and passes through the upper side 131.

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

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

1, 5 or 6, the air conditioner fan device 1 includes a filter 200 disposed inside a case 100 and a discharge port 117 disposed inside the case 100. It includes a fan device 300 for flowing to (127).

In this embodiment, the filter 200 and the fan unit 300 are disposed inside the base case 150. The base case 150 is formed in the shape of a truncated cone, and the upper side is open in this embodiment.

The base case 150 includes a base 151 seated on the ground, and a base outer 152 coupled to an upper side of the base 151, having a space formed therein, and having a suction port 155 formed therein.

When viewed from a top view, the base 151 is formed in a circular shape. The shape of the base 151 may be formed in various ways.

The base outer 152 is formed in the shape of a truncated cone with open upper and lower sides. In addition, a portion of the side surface of the base outer 152 is formed with an opening. The open portion of the base outer 152 is called a filter insertion port 154.

The case 100 further includes a cover 153 for shielding the filter insertion port 154 or/and the intake port. The cover 153 may be detachably assembled from the base outer 152 . In this embodiment, the cover 153 and the filter insertion port 154 are shielded together.

A user may remove the cover 153 and take the filter 200 out of the case 100 . The present invention may further include a cover separation unit separating the cover 153 . The cover separation unit will be described in detail with reference to FIGS. 9 to 13 .

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

In this embodiment, the inlet 155 is formed in a hole shape, and the shape of the inlet 155 may be formed in various ways.

The filter 200 is formed in a cylindrical shape with a vertical hollow formed therein. The outer surface of the filter 200 faces the inlet 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 air passing 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 a 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 surrounding the entire fan motor 310 . Since the motor housing 330 surrounds the entire fan motor 310, flow resistance with air flowing from the lower side to the upper side can be reduced.

Unlike the present embodiment, the motor housing 330 may be formed in a shape surrounding 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.

A motor shaft of the fan motor 310 passes through the lower motor housing 332 and is assembled to the fan 320 disposed on the lower side.

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

After the air passing through the filter 200 is sucked into the shroud, it is pressurized by the rotating blade and flows. The hub is disposed above the blade and the shroud is disposed below the blade. The hub may be formed in a bowl shape concave downward, and a lower side of the lower motor housing 332 may be partially inserted.

In this embodiment, the fan 320 is a mixed flow fan. The mixed-flow fan sucks in air in an axial center and discharges air in a radial direction, but the discharged air is formed inclined with respect to the axial direction.

Since the overall air flow flows from the lower side to the upper side, when air is discharged in a radial direction like a general centrifugal fan, a large flow loss occurs due to a 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 by the fan 320 in an upward direction.

The diffuser 330 serves to further reduce the radial component in the air flow and enhance the air flow component in the upward direction. The motor housing 330 is disposed between the diffuser 330 and the fan 320 . In order to minimize the installation height of the motor housing in the vertical direction, the lower end of the motor housing 330 may be inserted into the fan 320 and overlap with the fan 320 . Also, an upper end 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 disposed higher than the lower end of the fan 320, and the upper end of the motor housing 330 is disposed lower than the upper end of the diffuser 340.

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

Meanwhile, a suction grill 350 may be disposed inside the base case 150 . When the filter 200 is separated, the suction grill 350 prevents the user's fingers from penetrating into the fan 320, thereby protecting the user and the fan 320.

The filter 200 is disposed on the lower side of the suction grill 350, and the fan 320 is disposed on the upper side. The suction grill 350 is formed with a plurality of through holes in the vertical direction so that air can flow.

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

Indoor air is introduced into the filter installation space 101 through the inlet 155 and then discharged through the outlets 117 and 127 through the blower space 102 and the discharge space 103 .

Next, referring to FIG. 5 or 8 , the first discharge port 117 and the second discharge port 127 according to the present embodiment are arranged to extend in the vertical direction. The first outlet 117 is disposed between the front end 112 and the rear end 113 of the first tower 110, and is disposed close to the rear end 113. Air discharged from the first outlet 117 may flow along the first inner wall 115 due to the Coanda effect and may flow toward the front end 112 .

The first outlet 117 includes 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 to air discharge (rear end in this embodiment). , an upper border 117c forming an upper edge of the first discharge port 117, and a lower border 117d forming a lower edge of the first discharge port 117.

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

The first border 117a and the second border 117b are inclined with respect to the vertical direction V. In addition, the rear end 113 of the first tower 110 is also inclined with respect to the vertical direction (V).

In this embodiment, the slope 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 slope a2 of the rear end 113 is formed at 3 degrees. That is, the inclination a1 of the outlet 117 is greater than the inclination of the outer surface of the tower.

The second discharge port 127 is left-right symmetrical with the first discharge port 117 .

The second outlet 127 includes 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 to the air discharge (rear end in this embodiment). , an upper border 127c forming an upper edge of the second discharge port 127 and a lower border 127d forming a lower edge of the second discharge port 127 .

The first border 127a and the second border 127b are 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. In addition, the inclination (a1) of the outlet 127 is greater than the inclination (a2) of the outer surface of the tower.

Hereinafter, the cover separation unit 600 separating the cover 153 from the base case 150 will be described in detail.

Referring to Figures 9 and 10, the cover 153 of the present invention is coupled to the case 100 without separation for aesthetics to the user. Specifically, the cover 153 is magnetically coupled to the case 100, and magnets (not shown) may be installed in the cover 153 and the case 100. Hereinafter, a direction to be described means a direction in a state in which the cover 153 is coupled to the case 100 unless otherwise specified.

In addition, the cover 153 has a shape surrounding the entire outer surface (specifically, the outer circumferential surface) of the base case 150 . Thus, the cover 153 has a cylindrical shape corresponding to the outer circumferential surface of the base case 150 . In addition, the cover 153 may be separated into two pieces for the convenience of separation and to reduce the gap during coupling.

Specifically, the cover 153 may include a front cover 153a covering the front surface of the base case 150 and a rear cover 153b covering the remaining surfaces of the base case 150 except for the front surface. It is a semi-cylindrical shape of the front cover (153a) and the rear cover (153b). Accordingly, the cover 153 shields both the filter insertion hole 154 and the suction hole 155 formed in the base case 150, so that the aesthetic feeling given to the user is excellent.

In addition, the outer surface of the cover 153 coincides with a line or a surface extending the outer surface of the tower case 140 . Therefore, when the cover 153 is coupled to the base case 150, it has a sense of unity with the tower case 140 and there is no play. In this case, the aesthetic feeling given to the user is improved, but it is difficult for the user to separate the cover 153 from the base case 150 because there is no space for the user's hand to enter.

The present invention provides a cover separation unit 600 so that a user can easily separate the cover 153 from the base case 150 .

The cover separation unit 600 is installed in the case 100 to separate the cover 153 from the base case 150 . For example, the cover separation unit 600 may include a lever 610 and an upper cover pusher 620 . For another example, the cover separation unit 600 may include a lever 610, an upper cover pusher 620, a slider 630, and a lower cover pusher 640 to simultaneously separate the top and bottom of the cover 153. can

Referring to FIGS. 11 and 12 , the lever 610 is installed on the case 100 and slides along the outer surface of the case 100 . The lever 610 may be installed in the base case 150 or the tower case 140 . In this embodiment, the cover 153 shields the entire base case 150, and the lever 610 is installed on the tower case 140 and slides along the outer surface of the tower case 140.

The lever 610 transmits an external force to the upper cover pusher 620 and/or the lower cover pusher 640 . At least a portion of the lever 610 is exposed to the outer surface of the case 100 . In this embodiment, at least a part of the lever 610 is exposed to the outer surface of the tower case 140. The lever 610 may be disposed above the cover 153 .

The lever 610 is exposed on one side of the tower case 140 and is moved up and down by an external force. Therefore, the user can operate the lever 610 without excessively bending the waist, and since the lever 610 moves along the outer surface of the case 100, when the lever 610 moves, the It will not protrude outside. Therefore, the possibility that the lever 610 is protruded out of the case 100 and the lever 610 is damaged during use is reduced.

The lever 610 may be accommodated in a lever receiving groove 1310 formed in the case 100 . The lever receiving groove 1310 may be formed in the tower case 140 or in the base case 150 .

In this embodiment, the lever receiving groove 1310 is formed by recessing the outer circumferential surface of the tower case 140 toward the center. In addition, the lever accommodating groove 1310 may communicate with a pusher accommodating groove 1521 to be described later. That is, the lower portion of the lever accommodating groove 1310 is opened to communicate with the pusher accommodating groove 1521 . The lever accommodating groove 1310 accommodates the lever 610 and provides a space for the lever 610 to move.

A guide slit 1311 is formed in the lever receiving groove 1310 . The guide slit 1311 guides the lever 610 and prevents the lever 610 from being separated from the case 100 . A holder 611 may be further formed on the lever 610 .

One end of the holder 611 is connected to the lever 610 through a guide slit 1311, and the other end of the holder 611 is located inside the tower case 140 and has a width greater than that of the guide slit 1311. have Therefore, even when the lever 610 is moved up and down, the lever 610 is prevented from being separated from the case 100 .

The cover separation unit 600 further includes a return spring 660 providing restoring force to the lever 610 . The return spring 660 provides an upward restoring force to the lever 610. Specifically, one end of the return spring 660 is connected to the case 100 and the other end is connected to the lever 610 . More specifically, one end of the return spring 660 is connected to the inner surface of the tower case 140, and the other end is connected to the holder 611.

The upper cover pusher 620 is rotatably coupled to the lever 610 and is guided to the outer surface of the case 100 to push the cover 153 out. Therefore, when an external force is applied to the lever 610, the cover 153 is separated from the case 100 by the upper cover pusher 620.

The upper cover pusher 620 is rotatably coupled to the lever 610, the upper cover pusher 620 is hinged to the lever 610 and rotated, and the lever 610 is bent and rotated to one end of the lever 610. include that In addition, the reason why the upper cover pusher 620 is rotatably coupled to the lever 610 is that the upper cover pusher 620 is made of a flexible material, and one end of the upper cover pusher 620 moves in the outer direction while the whole is bent. include In this embodiment, the cover 153 pusher is hinged to the lower end of the lever 610.

The upper cover pusher 620 may be disposed in a coupling area of the base case 150 where the cover 153 is coupled to the base case 150 . Here, the coupling area means a position horizontally overlapping with the cover 153 in the base case 150 . The coupling region may be part of the base case 150 or may be the entire base case 150 .

The upper cover pusher 620 is positioned between the cover 153 and the base case 150 . When the cover 153 is coupled to the base case 150, the upper cover pusher 620 is not exposed to the outside by the cover 153. The upper cover pusher 620 is positioned in a pusher receiving groove 1521 formed in the base case 150 to be described later.

Accordingly, in a state in which the cover 153 is coupled to the base case 150, the upper cover pusher 620 is covered by the cover 153, so that aesthetics to the user can be improved. In addition, there is also an advantage in that a slim product can be implemented because a separate space in which the upper cover pusher 620 rotates is not required.

The upper rotation guide 1520 guides the upper cover pusher 620 to rotate in one direction when the upper cover pusher 620 moves along the outer surface of the base case 150 . Also, the upper rotation guide 1520 accommodates the upper cover pusher 620 .

The upper rotation guide 1520 may include an upper guide surface 1522 extending in a direction crossing the outer surface (outer circumferential surface) of the base case 150 and guiding the upper cover pusher 620 . The upper guide surface 1522 may extend in a direction crossing the vertical direction of the outer circumferential surface of the base case 150 . Specifically, the upper guide surface 1522 may have an inclination angle greater than 0 degrees with the outer surface of the base case 150 . The upper guide surface 1522 may be inclined downward from the inside to the outside of the base case 150 .

At this time, the lower surface of the upper cover pusher 620 may be inclined downward from the inside to the outside to correspond to the upper guide surface 1522 . The lower surface of the upper cover pusher 620 may have a predetermined angle of inclination with respect to the vertical direction. Accordingly, when the upper cover pusher 620 moves downward due to interference between the lower surface of the upper cover pusher 620 and the upper guide surface 1522, the lower end of the upper cover pusher 620 protrudes outward.

At least a portion of the upper guide surface 1522 vertically overlaps the upper end of the upper cover pusher 620 . At least a portion of the upper guide surface 1522 vertically overlaps the top of the upper cover pusher 620 in a state where the filter is coupled.

The upper rotation guide 1520 is formed on the base case 150 . Specifically, it is disposed in an area horizontally overlapping with the cover 153 in the base case 150 . Therefore, when the cover 153 is coupled to the base case 150, the upper rotation guide 1520 is not exposed to the outside by the cover 153.

More specifically, the base case 150 includes an inner base case 150a and an outer base case 150b disposed to surround at least a portion of the inner base case 150a, and the upper guide surface 1522 is the outer base case. It is formed on the outer surface of (150b).

The upper rotation guide 1520 may further include an upper pusher receiving groove 1521 accommodating the upper cover pusher 620 . The upper pusher receiving groove 1521 may accommodate a portion of the lever 610 when the lever 610 moves downward.

The upper pusher receiving groove 1521 accommodates the upper cover pusher 620 when the lever 610 does not operate, and guides the movement of the upper cover pusher 620 when the lever 610 moves downward. , guides the movement of the lever 610.

In this embodiment, the upper pusher receiving groove 1521 is formed by recessing the outer circumferential surface of the outer base case 150b inward. That is, the upper pusher receiving groove 1521 is opened outward from the outer base case 150b. Also, in order to accommodate and guide the lever 610 when the upper pusher accommodating groove 1521 moves downward, the upper direction is open and communicates with the lower portion of the lever accommodating groove 1310. The upper pusher accommodating groove 1521 and the lever accommodating groove 1310 are positioned to vertically overlap at least a portion thereof.

An upper guide surface 1522 is formed on one surface of the upper pusher receiving groove 1521 . The upper guide surface 1522 is formed on the lower side of the upper pusher receiving groove 1521 . Guided along the upper guide surface 1522, the upper cover pusher 620 is separated from the pusher receiving groove 1521 to the outside.

The slider 630 is spaced apart from the upper cover pusher 620, is installed to slide on the case 100, and is connected to the lever 610. The slider 630 is constrained by the lever 610 and moved. The slider 630 is installed to slide on the base case 150 . The slider 630 transfers the external force transmitted from the lever 610 to the lower cover pusher 640 .

The slider 630 may be accommodated in the lower rotation guide 1530 formed in the case 100 . While the slider 630 moves within the lower rotation guide 1530, the movement direction is guided by the lower rotation guide 1530.

The slider 630 may be positioned lower than the upper cover pusher 620 . The slider 630 may be positioned between the base case 150 and the cover 153 . Thus, there is an advantage in that the slider 630 is not visible from the outside while the cover 153 is coupled to the case 100 .

A slide slit 1534 is formed in the lower rotation guide 1530 . The slide slit 1534 guides the slider 630 and prevents the slider 630 from being separated from the case 100 .

A slide holder 631 may be further formed on the slider 630 . One end of the slide holder 631 is connected to the slider 630 through a slide slit 1534, and the other end of the slide holder 631 is located inside the base case 150 and is wider than the slide slit 1534. have a wide range Therefore, even when the slider 630 moves up and down, the slider 630 is prevented from being separated from the case 100 .

The slider 630 and the lever 610 are connected by a connecting link 650. One end of the connecting link 650 is connected to the holder 611, and the other end of the connecting link 650 is connected to the slide holder 631. The connecting link 650 is constrained to the movement of the lever 610 and moves together.

The connecting link 650 may be located inside the case 100 . In this embodiment, the connection link 650 is located in the space between the inner base case 150a and the outer base case 150b, and may be guided to the inner base case 150a and the outer base case 150b.

The lower cover pusher 640 is rotatably coupled to the slider 630 and is guided to the outer surface of the case 100 to push the cover 153 out. Accordingly, when an external force is applied to the slider 630, the cover 153 is separated from the case 100 by the lower cover pusher 640.

The lower cover pusher 640 is rotatably coupled to the slider 630 because the lower cover pusher 640 is hinged to the slider 630 and rotated, and the slider 630 is bent and rotated at one end. include that In addition, the reason why the lower cover pusher 640 is rotatably coupled to the slider 630 is that the lower cover pusher 640 is made of a flexible material, and one end of the lower cover pusher 640 moves toward the outer surface while the whole is bent. include In this embodiment, the cover 153 pusher is hinged to the lower end of the slider 630.

The lower cover pusher 640 may be disposed in a coupling area of the base case 150 where the cover 153 is coupled to the base case 150 . Here, the coupling area means a position horizontally overlapping with the cover 153 in the base case 150 . The coupling region may be part of the base case 150 or may be the entire base case 150 .

The lower cover pusher 640 is positioned between the cover 153 and the base case 150 . When the cover 153 is coupled to the base case 150, the lower cover pusher 640 is not exposed to the outside by the cover 153. The lower cover pusher 640 is positioned in a lower pusher receiving groove 1531 formed in the base case 150 to be described later.

Therefore, since the lower cover pusher 640 is covered by the cover 153 in a state in which the cover 153 is coupled to the base case 150, it is possible to improve aesthetics to the user. Also, since a separate space for the lower cover pusher 640 to rotate is not required, there is an advantage in that a slim product can be realized.

The lower cover pusher 640 may be positioned lower than the upper cover pusher 620 . When the lever 610 is operated, the upper and lower portions of the cover 153 are simultaneously separated by the upper cover pusher 620 and the lower cover pusher 640, so that the cover 153 is stably separated.

The lower rotation guide 1530 guides the lower cover pusher 640 to rotate in one direction when the lower cover pusher 640 moves along the outer surface of the base case 150 . Also, the lower rotation guide 1530 accommodates the lower cover pusher 640 .

The lower rotation guide 1530 may include a lower guide surface 1532 that guides the lower cover pusher 640 with an inclination with the outer surface (outer circumferential surface) of the base case 150 .

The lower guide surface 1532 may extend in a direction crossing the vertical direction of the outer circumferential surface of the base case 150 . The lower guide surface 1532 may extend in a direction crossing the vertical direction. Specifically, the lower guide surface 1532 may have a slope that is not parallel to the outer surface of the base case 150 . The lower guide surface 1532 may be inclined downward from the inside to the outside of the base case 150 .

At this time, the lower surface 641 of the lower cover pusher 640 may be inclined downward from the inside to the outside to correspond to the lower guide surface 1532 . Accordingly, when the lower cover pusher 640 moves downward due to interference between the lower surface of the lower cover pusher 640 and the lower guide surface 1532, the lower end of the lower cover pusher 640 protrudes outward.

At least a portion of the lower guide surface 1532 vertically overlaps the upper end of the lower cover pusher 640 . At least a portion of the lower guide surface 1532 vertically overlaps an upper end of the lower cover pusher 640 in a state in which the cover 153 is coupled.

The lower rotation guide 1530 is formed on the base case 150 . Specifically, it is disposed in an area horizontally overlapping with the cover 153 in the base case 150 . Therefore, when the cover 153 is coupled to the base case 150, the lower rotation guide 1530 is not exposed to the outside by the cover 153.

More specifically, the base case 150 includes an inner base case 150a and an outer base case 150b disposed to surround at least a portion of the inner base case 150a, and the lower guide surface 1532 is the outer base case. It is formed on the outer surface of (150b).

The lower rotation guide 1530 may further include a lower pusher receiving groove 1531 accommodating the lower cover pusher 640 . The lower pusher accommodating groove 1531 may accommodate a part of the slider 630 when the slider 630 moves downward.

The lower pusher receiving groove 1531 accommodates the lower cover pusher 640 and the slider 630 when the slider 630 does not operate, and when the slider 630 moves downward, the lower cover pusher 640 and guides the movement of the slider 630 .

In this embodiment, the lower pusher receiving groove 1531 is formed by recessing the outer circumferential surface of the outer base case 150b inward. That is, the lower pusher receiving groove 1531 opens outward from the outer base case 150b. In addition, in order to accommodate and guide the slider 630 when the lower pusher accommodating groove 1531 moves downward, the lower direction is open and communicates with the lower portion of the slider 630 accommodating groove. The lower pusher accommodating groove 1531 and the slider 630 accommodating groove are positioned to vertically overlap at least a portion thereof.

A lower guide surface 1532 is formed on one surface of the lower pusher receiving groove 1531 . The lower guide surface 1532 is formed on the lower side of the lower pusher receiving groove 1531 . Guided along the lower guide surface 1532, the lower cover pusher 640 is separated from the pusher receiving groove 1521 to the outside.

The location of the cover separation unit 600 is not limited. Preferably, since it is common for users to place the rear of the fan unit 1 for an air conditioner toward the wall, the cover separation unit 600 is disposed on the rear side of the fan unit 1 for the air conditioner.

Specifically, the cover separation unit 600 is disposed at a position where at least a portion of the blowing space 105 vertically overlaps. The lever 610 is positioned to vertically overlap at least a portion of the blowing space 105 . The lever 610 is disposed below the blowing space 105. In addition, the upper cover pusher 620, the lower cover 153 pusher, and the slider 630 may be disposed at a position vertically overlapping the blowing space 105.

14 is a plan sectional view taken along IX-IX in FIG. 3, and FIG. 15 is a bottom sectional view taken along IX-IX in FIG.

5, 14 or 15, the first outlet 117 of the first tower 110 is disposed facing the second tower 120, and the second outlet 127 of the second tower 120 is disposed facing 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.

In this embodiment, the first discharge case 170 and the second discharge case 180 are further included.

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 pass through the inner wall 115 of the first tower 110, and the second discharge case 180 is installed to pass through the inner wall 125 of the second tower 120. .

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

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

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

The inner side of the first discharge guide 172 is disposed toward the first discharge space 103a, and the outer side thereof is disposed toward the blowing space 105. The inner side of the second discharge guide 174 is disposed toward the first discharge space 103a, and the outer side thereof is disposed toward the blowing space 105.

An 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 continuous curved surface 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 continuous curved surface with the inner surface of the first outer wall 115, and through this, air in the first discharge space 103a can be guided toward the first discharge guide 172.

A 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 passes through the first discharge port 117 to the blowing space 105 is discharged with

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 172 The discharge interval 175 is defined as the distance between the outer surface 172a of the outer surface 172a and the inner surface 174b of the second discharge guide 174. The discharge interval 175 forms a predetermined channel.

In the discharge interval 175, the width of the middle part 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 gradually narrows from the inlet of the discharge interval 175 to the middle portion 175b, and the cross-sectional area widens again from the middle portion 175b to the outlet 175c. The middle part 175b is located inside the first tower 110. When viewed from the outside, the outlet 175c of the discharge gap 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 greater 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 in front 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 formed inside the first discharge space 103a.

The second discharge case 180 forms the second discharge port 127, the first discharge guide 182 disposed on the air discharge side of the second discharge port 127, and the second discharge port 127, 2 includes a second discharge guide 184 disposed on the side opposite to the air discharge of the discharge port 127.

A discharge interval 185 is formed between the first discharge guide 182 and the second discharge guide 184 . Since the second discharge case 180 is left-right symmetrical with the first discharge case 170, a detailed description thereof is omitted.

Meanwhile, the fan device 1 for the air conditioner may further include an air flow converter 400 that changes the air flow direction of the blowing space 105 . The air current converter 400 is a component that changes the direction of air flowing through the blowing space 105 by opening the blowing space 105 or closing the blowing space 105 .

Of course, the air flow converter 400 may partially open the blowing space 105 or partially close the blowing space 105 to change the direction of air flowing through the blowing space 105 . Blowing space 105 In this embodiment, the air flow converter 400 may convert the horizontal air flow flowing through the blowing space 105 into an upward air flow.

16 and 17 are perspective views of the airflow converter 400. In more detail, FIG. 16 shows an air flow converter 400 that implements a front discharge air flow by opening the front of the blowing space 105 . 1 to 6, the air current converter 400 is shown as a box, and shows that the air current converter 400 is disposed on the top of the first tower 110 or the top of the second tower 120 .

17 shows an air current converter 400 that implements an updraft by blocking the front of the blowing space 105, and referring to FIG. 6, the air current converter 400 is disposed in the first tower 110. A first air current converter 401 and a second air current converter 402 disposed on the second tower 120 are included. The first air current converter 401 and the second air current converter 402 are left-right symmetrical and have the same configuration. Hereinafter, the first air current converter 401 will be mainly described, and the description of the second air current converter 402 having the same configuration as the first air current converter 401 will be omitted.

The air current converter 400 is disposed in the tower case 140, and provides a driving force for the movement of the space board 410 reciprocating between the blowing space 105 and the inside of the tower case 140 and the space board 410 It includes a guide motor 420 and a board guider 430 installed in the tower case 140 and guiding the movement of the space board 410.

15 to 17, the space board 410 is disposed in at least one of the first tower 110 or the second tower 120, and moves between the inside of the tower and the blowing space 105, It is a component that selectively changes the discharge area in front of the blowing space 105. The space board 410 is exposed to the front of the blowing space 105 through the board slits 119 and 129 .

The space board 410 may be hidden inside the tower, and may protrude from the tower when the guide motor 420 is operated to shield the blowing space 105 . In this embodiment, the space board 410 includes the first space boards 410 and 411 disposed on the first tower 110 and the second space boards 410 and 412 disposed on the second tower 120. includes

To this end, referring to FIG. 15, a board slit 119 penetrating the inner wall 115 of the first tower 110 is formed, and a board slit penetrating the inner wall 125 of the second tower 120. (129) are formed respectively.

The board slits 119 formed in the first tower 110 are referred to as first board slits 119, and the board slits formed in the second tower 120 are referred to as second board slits 129. The first board slit 119 and the second board slit 129 are disposed symmetrically. The first board slit 119 and the second board slit 129 are formed to elongate in the vertical direction (second direction). The first board slit 119 and the second board slit 129 may be inclined 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 space board 410 may be formed in a flat or curved plate shape. The space board 410 may be formed to elongate in the vertical direction, and may be disposed forward in the center of the blowing space 105 . The space board 410 may include a convex curved portion in a radial direction. The space board 410 may block the horizontal airflow flowing into the blowing space 105 and turn it upward.

In this embodiment, the inner end 411a of the first space board 410 (411) and the inner end 412a of the second space board 410 (412) come into contact with each other or come close to each other to form an updraft. Unlike the present embodiment, one space board 410 may be in close contact with the opposite tower to form an updraft.

When the air current converter 400 forms an upward air current, the inner end 411a of the first space board 410, 411 closes the first board slit 119, and the second space board 410, 412 The inner end 412a of ) may close the second board slit 129 .

When the air current converter 400 forms a horizontal air flow, the inner ends 411a of the first space boards 410 and 411 penetrate the first board slit 119 and protrude into the blowing space 105, The inner ends 412a of the two space boards 410 and 412 may protrude into the blowing space 105 through the second board slit 129 .

In this embodiment, the first space board 410, 411 and the second space board 410, 412 protrude into the blowing space 105 through a rotational motion. Unlike the present embodiment, at least one of the first space board 410, 411 and the second space board 410, 412 may be linearly moved in a sliding manner and exposed to the blowing space 105. The first space board 410 (411) and the second space board 410 (412) move along the first direction (horizontal direction).

When viewed from a top view, the first space board 410 (411) and the second space board 410 (412) are formed in an arc shape. The first space board 410, 411 and the second space board 410, 412 form a predetermined radius of curvature, and the center of curvature is located in the blowing space 105.

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

The space board 410 may be formed of a transparent material.

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

The guide motor 420 includes a first guide motor 421 providing rotational force to the first space board 410 and 411 and a second guide motor providing rotational force to the second space board 410 and 412 ( 422).

The first guide motors 421 may be disposed on the upper and lower sides, respectively, and if a distinction is necessary, they 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, respectively, and if necessary, it may be divided into an upper second guide motor 422 and a lower second guide motor 422 .

In particular, referring to FIG. 18 , the guide motor 420 may be fastened to the tower case 140 . The tower case 140 may include a guide body 440 in which a guide motor 420 is installed. In this embodiment, the guide motor 420 is fastened to the guide body 440. The guide body 440 may be integrally formed with the tower case 140 or may be configured separately for convenience of assembly.

A pinion gear 423 is axially coupled to the guide motor 420 . The pinion gear 423 is coupled to a shaft (not shown) of the guide motor 420 . When the guide motor 420 operates, the pinion gear 423 rotates.

The axis of rotation of the pinion gear 423 may be disposed in a direction crossing the longitudinal direction of the space board 410 . The axis of rotation of the pinion gear 423 is preferably disposed parallel to the horizontal direction.

The pinion gear 423 is gear-coupled to the rack 436 formed on the board guider 430. When the pinion gear 423 rotates in the horizontal direction, the rack 436 moves up and down, and the board guider 430 connected to the rack 436 moves up and down.

The board guider 430 is a component that transmits the driving force of the guide motor 420 to the space board 410. The board guider 430 is disposed in front of the guide motor 420 and is disposed in the rear of the space board 410 . The board guider 430 is connected to the space board 410 and moves in a direction crossing the moving direction of the space board 410 . The board guider 430 moves up and down.

The board guider 430 disposed on the first tower 110 is defined as a first board guider 430a, and the board guider 430 disposed on the second tower 120 is defined as a second board guider 430b. do.

The board guider 430 may be arranged parallel to the space board 410 . The board guider 430 may be disposed 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 side of the board guider 430 is adjacent to the back side of the space board 410 . When the rear surface of the space board 410 is formed in an arc shape, the front surface of the board guider 430 is formed in a curved surface so that the space board 410 can slide along the front surface of the board guider 430 .

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

The upper end of the board guider 430 is disposed above the space board 410 . When a plate shielding the guide motor 420 from the discharge spaces 103a and b is formed, the upper end of the space board 410 is disposed lower than the plate, and the upper end of the board guider 430 may be disposed above the plate.

A first slit 432 may be formed in the board guider 430 . The first protrusion 4111 of the space board 410 is inserted into the first slit 432, and the space board 410 moves when the board guider 430 moves.

Referring to FIGS. 19 and 20 , the first slit 432 is formed by opening the board guider 430 of the board guider 430 to guide the movement of the space board 410 . The first protrusion 4111 is formed to protrude from one side of the space board 410, at least a part thereof is inserted into the first slit 432, and slides along the first slit 432.

The left end of the first slit 432 (refer to FIG. 19 ) is disposed close to the left end of the board guider 430 , and the right end of the first slit 432 is disposed at the right end of the board guider 430 .

In the first slit 432 , a portion relatively close to the blowing space 105 may have a lower height than a portion relatively far from the blowing space 105 . Specifically, the lower end of the first slit 432 is closer to the blowing space 105 than the upper end of the first slit 432 . For example, referring to FIG. 19 , the lower end of the first slit 432 formed in the first board guider 430 (430a) is disposed to the right of the upper end of the first slit 432 . Similarly, although not shown, the lower end of the second slit 434 formed in the second board guider 430 (430b) will be disposed to the left of the upper end of the second slit 434.

The first slit 432 includes a slit inclined portion 4321 . The slit inclined portion 4321 may include a downward slope in the direction of the blowing space 105 . For example, referring to FIG. 19 , the first slit 432 formed in the first board guider 430a is inclined downward in the right direction. Similarly, although not shown, the first slit 432 formed in the second board guider 430b is inclined downward in the left direction. Preferably, the slit inclined portion 4321 may have an inclination angle of 40 degrees to 60 degrees relative to the vertical direction.

When the slit inclined portion 4321 is inclined downward in the direction of the blowing space 105, the tent torque of the guide motor 420 generated due to the weight of the space board 410 in a state in which the guide motor 420 is turned off ( Detent Torque) is reduced.

The slit inclined portion 4321 of the first slit 432 moves up and down as the board guider 430 rises and falls. When the board guider 430 rises, the first protrusion 4111 is directed to the lower end of the slit inclined portion 4321 of the first slit 432 . Conversely, when the board guider 430 descends, the first protrusion 4111 is directed toward the upper end of the slit inclined portion 4321 of the first slit 432 .

Referring to FIGS. 19 and 21 , the slit inclined portion 4321 of the first slit 432 may form a chin. The slit inclined portion 4321 of the first slit 432 may have a front end width smaller than a rear end width.

When the width of the front end of the slit inclined portion 4321 of the first slit 432 is smaller than the width of the rear end, when the first protrusion 4111 moves along the slit inclined portion 4321, the first protrusion 4111 escape is prevented.

The first protrusion 4111 forms a locking step 4111b to correspond to the chin of the slit inclined portion 4321 of the first slit 432 . That is, the locking step 4111b of the first protrusion 4111 is disposed at the rear end of the slit inclined portion 4321 of the first slit 432 . Therefore, the first protrusion 4111 is not separated from the slit inclined portion 4321 of the first slit 432 .

The first slit 432 includes a vertical portion 4322 . The lower end of the vertical portion 4322 is connected to the upper end of the slit inclined portion 4321 . The vertical portion 4322 extends in the longitudinal direction (vertical direction) of the board guider 430.

The vertical portion 4322 of the first slit 432 functions as a stopper. That is, the maximum upward movement distance of the first protrusion 4111 is the upper end of the slit inclined portion 4321, and does not slide along the vertical portion 4322.

The vertical portion 4322 of the first slit 432 may form a chin. The width of the front end of the vertical portion 4322 of the first slit 432 may be smaller than that of the rear end. The first protrusion 4111 forms a locking jaw 4111b to correspond to the jaw of the vertical portion 4322 of the first slit 432 . That is, at the rear end of the vertical portion 4322 of the first slit 432, the locking protrusion 4111b of the first protrusion 4111 is disposed. Therefore, the first protrusion 4111 is not separated from the slit inclined portion 4321 of the first slit 432 .

The first slit 432 is disposed at an upper end of the vertical portion 4322 and includes a first protrusion insertion portion 4323 for inserting 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 larger than that of the first protrusion 4111 . More specifically, the diameter of the first protrusion insertion portion 4323 is larger than the diameter of the locking jaw 4111b of the first protrusion.

The first protrusion 4111 is inserted into the first protrusion inserting portion 4323 . The space board 410 is fastened to the board guider 430 as the first protrusion 4111 descends along the vertical portion 4322 . The first protrusion 4111 slides down or slides up along the slit inclined portion 4321, and the space board 410 moves.

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

Referring to FIG. 18 , a second slit 434 may be formed in the board guider 430 . The second slit 434 extends in the longitudinal direction (vertical direction) of the board guider 430 . The second slit 434 is formed by opening the board guider 430 in a horizontal direction.

The second slit 434 is disposed between one first slit 432 and another first slit 432 . The second slit 434 and the first slit 432 are disposed to cross each other. The second slit 434 and the first slit 432 are disposed to cross each other to distribute force and offset the bending stress of the board guider 430 .

The body protrusion 444 of the guide body 440 is inserted into the second slit 434, and the board guider 430 slides along the body protrusion 444.

The body protrusion 444 of the guide body 440 protrudes in a direction crossing the longitudinal direction of the guide body 440 . Specifically, the body protrusion 444 protrudes from the guide body 440 in a horizontal direction.

More specifically, the body protrusion 444 is formed on the front surface of the first cover 441 . The body protrusion 444 is formed to protrude from the first cover 441 to the front. The side of the body protrusion 444 extends in the longitudinal direction of the first tower 110 or the second tower 120 . Referring to FIG. 18 , the body protrusion 444 extends in a vertical direction.

The board guider 430 may be formed with a rack 436 . The rack 436 is connected to the pinion gear 423 to move the board guider 430 when the guide motor 420 operates. The rack 436 transmits the rotational force of the guide motor 420 to the board guider 430 in a linear motion. The rack 436 is disposed on the opposite side and the side facing the space board 410 in the board guider 430 . Specifically, the rack 436 may be disposed on the upper rear surface of the board guider 430 .

It includes an airflow converter 400, a guide motor 420, and a guide body 440 to which the board guider 430 is installed. The guide body 440 is disposed behind the board guider 430. The guide body 440 is composed of a first cover 441, a second cover 442, and a motor support plate 443.

The first cover 441 supports the rear surface 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.

The outer end of the second cover 442 is in contact with the inner surface of the board guider 430 . Thus, the board guider 430 can slide along the outer surface of the second cover 442 . The motor support plate 443 is disposed on 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 protrude upward from the top of the first cover 441 . The motor support plate 443 is disposed outside the second cover 442 . The upper end of the motor support plate 443 is disposed above the motor. More specifically, the upper end of the motor support plate 443 is disposed above the pinion gear 423 .

As shown in Figure 22, the guide body 440 may include a rail 445 for guiding a roller 412 to be described later.

The first protrusion 4111 is formed on the space board 410 . More specifically, the first protrusion 4111 is formed on the rear surface of the space board 410 . Referring to FIG. 22 , the first protrusion 4111 is formed adjacent to one end of the space board 410 in the width direction. However, the position of the first protrusion 4111 may be changed within a range easily adopted by a person skilled in the art without being limited thereto.

The first protrusion 4111 may form a locking jaw 4111b. Referring to FIG. 21 , the locking protrusion 4111b of the first protrusion protrudes outward in the radial direction from the end of the first protrusion 4111 . The locking protrusion 4111b of the first protrusion is caught on the slit inclined portion 4321 of the first slit 432 or the protrusion of the vertical portion 4322 and is not separated.

When the board guider 430 and the first slit 432 are raised or lowered, the first protrusion 4111 and the space board 410 are retracted or protruded. When the board guider 430 rises, the first protrusion 4111 is positioned at the lower end of the slit inclined portion 4321 of the first slit 432 . When the first protrusion 4111 is located at the lower end of the slit inclined portion 4321, the space 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 positioned at the upper end of the slit inclined portion 4321 of the first slit 432 . When the first protrusion 4111 is located at the upper end of the slit inclined portion 4321, the space 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 guide body 440 is formed to protrude from one side and includes a body protrusion 444 at least a part of which is inserted into the second slit 434 .

Referring to FIG. 18 , the airflow converter 400 includes friction reducing protrusions 437 that prevent surface contact by spacing the board guider 430 and the space board 410 apart. The friction reducing protrusion 437 separates the space board 410 and the board guider 430 in the horizontal direction.

The friction reducing protrusion 437 may be formed on at least one of the board guider 430 and the space board 410 . The friction reducing protrusion 437 may protrude from the board guider 430 and the space board 410 in a horizontal direction. Hereinafter, the friction reducing protrusion 437 will be described based on the formation of the board guider 430, but this description can be applied to the formation of the friction reduction protrusion 437 on the space board 410 as it is.

The friction reducing protrusion 437 is formed on the board guider 430, protrudes from a surface facing the space board 410, and may contact the space board 410. Specifically, the friction reducing protrusion 437 is formed to protrude forward from the front surface 438 of the board guider 430 facing the space board 410 .

As another example, the friction reducing protrusion 437 is formed on the space board 410, protrudes from a surface facing the board guider 430, and may contact the space board 410. Specifically, the friction reducing protrusion 437 is formed to protrude backward from the rear surface facing the board guider 430 in the space board 410 .

Since the space board 410 reciprocates in the horizontal direction (first direction), the friction reducing protrusion 437 extends in the first direction. That is, the friction reducing protrusion 437 has the longest shape in the first direction. The width of the friction reducing protrusion 437 in the second direction (vertical direction) is smaller than the length of the friction reducing protrusion 437 in the first direction and smaller than the width of the board guider 430 . Since the friction reducing effect cannot be expected if the width of the friction reducing protrusion 437 is too wide, it is preferably 5 mm or less.

Accordingly, the friction reducing protrusion 437 reduces friction between the board guider 430 and the space board 410 moving in the first direction. However, when only one friction reducing protrusion 437 is disposed, since the movement of the space board 410 becomes unstable, a plurality of friction reducing protrusions 437 are arranged spaced apart in a second direction intersecting the first direction. it is desirable More preferably, three friction-reducing protrusions 437 may be disposed at an upper part, a middle part, and a lower part of the board guider 430 .

18 and 22, the air current converter 400 separates the tower case 140 and the space board 410, and the roller 412 prevents surface contact between the tower case 140 and the space board 410. ) may further include.

The roller 412 may be installed on one of the tower case 140 and the space board 410 . In this embodiment, rollers 412 are installed on space board 410 . A roller 412 may be positioned under the space board 410 . A rotation axis of the roller 412 may extend in a horizontal direction. More specifically, the axis of rotation of the roller 412 extends in the front-back direction.

A roller 412 is installed on the lower rear surface of the space board 410, and the roller 412 is supported on the upper surface of the tower case 140. The roller 412 has sliding friction with the tower case 140 while supporting the weight of the space board 410 . Specifically, the roller 412 is supported by the guide body 440 of the tower case 140 . The roller 412 may be guided by the guide body 440 and the rail 445 .

When the roller 412 moves in the tower case 140 while supporting the space board 410 in the vertical direction, friction occurs between the tower case 140 and the space board 410 while supporting the weight of the space board 410. will reduce In addition, the roller 412 stably maintains the space board 410 during movement of the space board 410 .

In particular, even when the space board 410 protrudes toward the blowing space 105, the roller 412 is biased toward one side of the space board 410 in the width direction so that the roller 412 is supported by the tower case 140. can be placed. Specifically, the roller 412 may be located at one end far from the blowing space 105 side of both ends of the space board 410 in the width direction.

Although not shown in the drawings, the airflow converter 400 may further include a guide pin installed on one of the tower case 140 and the space board 410 to separate the tower case 140 and the space board 410. there is.

Guide pins may be installed on one of the tower case 140 and the space board 410 . In this embodiment, guide pins are installed on the space board 410. Guide pins may be located under the space board 410 . The guide pin has a circular column shape extending in the horizontal direction. The guide pin extends in the front-rear direction.

When the guide pin slides on the tower case 140 while supporting the space board 410 in the vertical direction, friction is generated between the tower case 140 and the space board 410 while supporting the weight of the space board 410. will reduce The guide pin may be located at one end far from the blowing space 105 side of both ends of the space board 410 in the width direction.

The air flow converter 400 is disposed in front 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. As the air passes through the first inner wall 115 or the second inner wall 125, the Coanda effect is generated. The air current 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 may implement a wide area wind, a concentrated wind, or a rising airflow depending on the degree of protrusion.

A driving method of the air current converter 400 is described as follows.

16 and 17, when the guide motor 420 operates, the pinion gear 423 rotates, and the board guider 430 moves up and down while the rack 436 meshed with the pinion gear 423 moves.

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 down along the body protrusion 444 . As the position of the first slit 432 increases, the first protrusion 4111 gradually moves to the right, and the space board 410 penetrates the board slit and protrudes into the blowing space 105 .

That is, the blowing space 105 is closed by the space board 410 . The air discharged through the blowing space 105 forms an updraft.

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 up along the body protrusion 444 . As the position of the first slit 432 is lowered, the first protrusion 4111 gradually moves to the left, and the space board 410 is introduced into the tower case 140 through the board slit. That is, the blowing space 105 is opened by the space board 410 . The air discharged through the blowing space 105 spreads from side to side while being discharged forward to form a wide area wind.

When the board guider 430 is raised or lowered and positioned in the middle, the space board 410 penetrates the board slit to shield a portion of the blowing space 105. That is, the blowing space 105 is partially opened by the space board 410 . The air discharged through the blowing space 105 is intensively discharged forward to form a concentrated wind.

Hereinafter, the heater 500 installed in the fan device for an air conditioner will be described.

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

Referring to FIGS. 1 and 2 , the heater 500 may be disposed in the first tower 110 or the second tower 120 of the air conditioner fan unit.

The heater 500 is disposed elongately in the up-down 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 respectively disposed in the first tower 110 and the second tower 120 . 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 symmetrically disposed about the central axis.

The top of the heater 500 may be disposed below the top of the space board 410 . The lower end of the heater 500 may be disposed above the lower end of the space board 410 .

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

Referring to FIG. 5 , the upper end of the heater 500 is disposed in front of the lower end of the heater 500 . In other words, the heater 500 is inclined so that the lower end is disposed rearward than the upper end.

The heater 500 is disposed inside the tower case 140, and is disposed upstream of the first discharge port 117 or the second discharge port. Upstream means disposed 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 outlet 117 or the second outlet.

The heater 500 includes a heating tube 520 that emits heat and a fin 530 (Fin) 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 may be connected to an electrical device to receive electrical energy, and may be configured as a resistor to convert electrical energy into thermal energy. Alternatively, the heating tube 520 may be formed of a pipe through which a refrigerant flows therein, and may heat air by exchanging heat between a refrigerant flowing inside and air flowing outside. In addition, the heating tube 520 includes a heating element within a range that can be easily changed based on a person skilled in the art.

The heating tube 520 may be formed with an inclination. More specifically, the upper end of the heating tube 520 may be disposed forward than the lower end.

The heating tube 520 may be formed in a U shape. The fin 530 (Fin) is a component that is connected to the heating tube 520 and transfers heat from the heating tube 520. Since the fin 530 has a large surface area, the heat received by the heating tube 520 can be effectively transferred to the flowing air.

The pin 530 changes the air flow direction and guides the air to the first discharge port 117 or the second discharge port. Referring to FIG. 5 , the inlet is disposed below, and the first discharge port 117 and the second discharge port are disposed above. 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 a 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 the 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 and long.

A plurality of pins 530 are fixed to the vertical plate 512 . The plurality of pins 530 extend in a direction crossing the extending direction of the vertical plate 512 . For example, the vertical plate 512 may extend vertically and long, and the plurality of pins 530 may extend in the front, rear, left, and right directions.

Heating tubes 520 are disposed elongated along the extending direction of the vertical plate 512 . The heating tube 520 may be disposed 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. More specifically, the upper end of the vertical plate 512 may be disposed forward than the lower end.

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

The lower horizontal plate 513 is disposed at the lower end of the vertical plate 512 . A vertical plate 512 is connected to an upper surface of the lower horizontal plate 513, and a passage shielding member 540 is disposed on a 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 outlet 117 extends in the longitudinal direction of the first tower 110 and the second outlet extends 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 disposed along the first outlet 117, and a plurality may be disposed along the second outlet. Since a plurality of heaters 500 are disposed along the first outlet 117 and the second outlet, air can be equally discharged 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 outlet 117 and the second outlet extend from the center of the top to the bottom right. A plurality of pins 530 extend from the center to the upper right corner. The longitudinal directions of the first discharge port 117 and the second discharge port and the extension directions of the plurality of pins 530 may cross 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 outlet 117 and the second outlet, and extend in a direction perpendicular to the longitudinal directions of the first outlet 117 and the second outlet. Therefore, the flow direction of the air flow is changed toward the first discharge port 117 and the second discharge port along the guide of the pin 530, and the air flow is distributed in an equal amount to the first discharge port 117 and the second discharge port formed vertically and long. become and flow

The heating tube 520 may elongate along the longitudinal direction of the first outlet 117 or the second outlet, and the fin 530 may extend perpendicularly to the extending direction of the heating tube 520 .

Referring to FIG. 5 , the heating tube 520 may be disposed above the heater 500 . The heating tube 520 extends downward from the top of the heater 500 . The heating tube 520 may be disposed parallel to the vertical plate 512 while being spaced apart from the vertical plate 512, or may extend while being in contact with the vertical plate 512. The heating tube 520 extends along the longitudinal direction of the first discharge port 117 and the second discharge port.

Referring to FIG. 5 , the fin 530 extends perpendicular to the extending direction of the heating tube 520 . For example, when the heating tube 520 forms an angle of about 4 degrees with respect to the vertical axis V, the fin 530 may form an angle of about 4 degrees with the ground. At this time, the fin 530 extends perpendicular to the extending direction of the heating tube 520 .

Referring to FIG. 5, when viewed from the side, the heating tube 520 is inclined with a certain inclination between the vertical axis and the vertical plate 512 is also arranged with a certain inclination with the vertical axis, and the heating tube 520 and vertical plate 512 are arranged in parallel. In addition, the upper horizontal plate 511 is disposed parallel to the horizontal plane. The lower horizontal plate 513 is inclined with a certain inclination between it and the horizontal plane. The pins 530 are inclined with a certain inclination between them and the horizontal plane, and are arranged parallel to the lower horizontal plane.

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

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

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

The heater 500 is disposed 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. Since the heater 500 is disposed parallel to the first outlet 117 or the second outlet, an equal amount of air guided by the fin 530 can flow to the first outlet 117 or the second outlet. .

Referring to FIGS. 14 and 15 , the first tower 110 is disposed toward the blowing space 105 and includes a first inner wall 115 having a first outlet 117 formed thereon. The second tower 120 is disposed toward the blowing space 105 and includes a second inner wall 125 in which a second outlet is formed. The heater 500 is spaced apart from the inner surface of at least one of the first inner wall 115 and the second inner wall 125 . A space in 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 through the space. As air flows between the heater 500 and the inner surface, an air wall is formed. Therefore, the heat emitted from the heater 500 does not convect to the first inner wall 115 or the second inner wall 125, preventing the first inner wall 115 and the second inner wall 125 from overheating. prevent.

Referring to FIGS. 14 and 15 , 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 spaced apart from the inner surface of the first outer wall 114 or the second outer wall 124 . A space in 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 in 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 to form an air wall. Therefore, heat emitted from the heater 500 does not convect 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 being overheated.

Referring to FIGS. 14 and 15 , the heater 500 is disposed closer to the first inner wall 115 than to the first outer wall 114 . The heater 500 is disposed closer to the second inner wall 125 than to the second outer wall 124 . The air discharged from the first outlet 117 flows at a high speed in the first inner wall 115 , and the air discharged from the second outlet 125 flows at a high speed in the second inner wall 125 . As air flows at a high speed between the first inner wall 115 and the second inner wall 125, forced convection occurs, which cools the first inner wall 115 and the second inner wall 125 more rapidly. can However, air flows at a slow speed through the first outer wall 114 and the second outer wall 124 by an indirect Coanda effect. Therefore, 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 disposing the heater 500 closer to the first inner wall 115 or the second outer wall 124, overheating of the tower case 140 can be more effectively prevented.

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 in the lower part than in the upper part.

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

The heater 500 further includes a passage 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 passage shielding member 540 is disposed at the lower end of the heater 500 and extends toward the lower end of the first discharge port 117 or the second discharge port.

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

The flow path blocking member 540 is inclined so that the rear end is disposed above the front end.

The passage blocking member 540 extends to the rear end of the first tower 110 or the second tower 120 .

The lower end of the first discharge port 117 or the second discharge port is disposed above the passage shielding member 540 .

As shown in FIG. 7 , the passage 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, as shown in FIG. 5 , the passage blocking member 540 may be formed to have the same width as the lower horizontal plate 513 and may extend to the rear end.

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

24 to 26, the fan device for an air conditioner according to another embodiment of the present invention has an air guide 160 for guiding the air whose direction has been changed to the first discharge port 117 or the second discharge port in addition to the heater 500. ) may be further included.

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

The air guide 160 changes the direction of the air flowing from the lower side to the upper side in the horizontal direction, and the direction-converted air flows into the outlets 117 and 127.

When it is necessary to distinguish the air guide 160, the one disposed inside the first tower 110 is referred to as the first air guide 161, and the one disposed inside the second tower 120 is referred to as the second air guide 162. say

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. A front side end of the first air guide may be coupled to an inner wall close 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 the air flowing from the lower side to the first discharge port 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 forward and downward 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 formed between 10 mm and 20 mm.

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

At least a portion of the right end of the first air guide 161 is adjacent to the outside of the heater 500, and the remaining portion is coupled to the inner wall of the first tower 110. The left end of the first air guide 161 may be closely attached to or coupled to the outer wall of the first tower 110 .

Thus, 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 that has passed through the fan device 300 rises and flows backward under the guidance of the first air guide 161 .

The second air guide 162 is symmetrical with 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. A front side end of the second air guide 162 may be coupled to an inner wall close to the second outlet. 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 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 part 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, it 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 forward and downward 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 of 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 formed between 10 mm and 20 mm.

An entrance angle a4 of the front end of the curved portion 162f of the second air guide may be formed to be 10 degrees. The entrance angle (a4) is defined as an angle between a vertical line to the ground and a tangential line of the front end of the curved surface of the second air guide.

At least a 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 closely attached to or coupled to the outer wall of the second tower 120 .

Thus, 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 under the guidance of the second air guide 162 .

When installing the air guide 160, the direction of the air coming up in the vertical direction is converted to the horizontal direction. Accordingly, there is an advantage in that air at a uniform flow rate can be discharged from the air outlets formed long in the vertical direction. In addition, there is an effect that the air can be discharged horizontally.

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

29 is a graph for explaining the difference in effect between the air guide according to the present invention and the prior art.

The upper graph of FIG. 29 shows the amount of air discharged against the rotational speed of the fan according to the inlet angle a4 of the air guide. Although not mentioned in FIG. 29, the curvature length of the curved portion of the air guide may also have an effect. When the rotational speed of the fan is low, there is no significant difference, but when the rotational speed of the fan increases, a difference appears in the discharged air volume. For example, when the rotational 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 about 14 CMM. . When the fan is based on the same RPM, according to the present invention, there is an effect of increasing the air volume by about 4% compared to the prior art.

The lower graph of FIG. 29 shows noise generated versus air volume of the fan according to the inlet angle a4 of the air guide. Although not mentioned in FIG. 29, 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 is increased, there is a difference in noise generated. For example, when the air volume is 10.0 CMM, the noise generated in the air purifier according to the prior art is about 40.5 dB, but the noise generated in the air purifier having an air guide according to the present invention is about 40 dB. Based on the same air volume, according to the present invention, there is an effect of reducing noise generated by about 0.5 dB compared to the prior art.

The air flow converter 400 may be disposed above the heater 500 . More specifically, the guide motor 420 may be disposed above the heater 500 . The guide motor 420 generates a driving force, the space board 410 changes the discharged air, and the board guider 430 transfers the driving force of the guide motor 420 to the space board 410. The space board 410 and the board guider 430 may be disposed in front of the heater 500, but the guide motor 420 is disposed above the heater 500. Therefore, it is possible to efficiently utilize the space and prevent the guide motor 420 from interfering with the air flow inside the discharge space 103. The guide motor 420 is a component that generates heat, and has a disadvantage in that it is vulnerable to heat. Therefore, by disposing the guide motor 420 above the heater 500, it is possible to prevent convection of heat from the heater 500 to the guide motor 420 without being disposed on the air flow path.

Hereinafter, with reference to FIG. 24, the air flow around the heater viewed from above will be described. Air passing through the fan unit 300 rises in front of the heater. Air rising from the front of the heater changes its flow direction to the rear. Most of the air is heated by passing through the heater, and the warm air is discharged into the blowing space. Some air flows in the space between the heater and the outer walls 114,124. 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.

27 is an exemplary view showing horizontal air flow of the fan unit for an air conditioner according to the first embodiment of the present invention.

Referring to FIG. 27, when horizontal airflow is provided, the first space board 411 is hidden inside the first tower 110, and the second space board 412 is hidden inside the second ellipse 120 .

Air discharged from the first discharge port 117 and discharged air from the second discharge port 127 may be joined in the blowing space 105 and flow forward through the front ends 112 and 122 .

In addition, the air at the rear of the blowing space 105 may flow forward after being guided into the blowing space 105 .

In addition, the air around the first tower 110 can flow forward along the first outer wall 114, and the air around the second tower 120 can flow forward along the second outer wall 124. there is.

Since the first discharge port 117 and the second discharge port 127 extend vertically and are symmetrically arranged, the air flowing from the upper side of the first discharge port 117 and the second discharge port 127 and the lower side The air flowing in can be formed more uniformly.

In addition, since the air discharged from the first discharge port and the second discharge port are joined in the blowing space 105, the straightness of the discharged air is improved and the air can flow to a farther place.

FIG. 28 is an exemplary view showing an upward air flow of the fan device for an air conditioner according to the first embodiment of the present invention.

Referring to FIG. 28 , when providing an updraft, the first space board 411 and the second space 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 space board 411 and the second space board 412, the air discharged from the outlets 117 and 127 flows through the first space board 411 and the second space board 412. It rises along the rear surface of the space board 412 and is discharged to the top of the blowing space 105 .

By forming an ascending airflow in the fan device 1 for an air conditioner, it is possible to suppress direct flow of discharged air toward a user. In addition, when circulating indoor air, the air conditioner fan unit 1 can be operated in an ascending air current.

For example, when an air conditioner and a fan unit for an air conditioner are used at the same time, convection of indoor air can be promoted by operating the fan unit 1 for the air conditioner in an ascending air current, and the indoor air can be cooled or heated more quickly. can

Hereinafter, the fan 320 for an air conditioner for reducing noise and sharpness of noise will be described in detail.

Referring to FIG. 29, the fan 320 of the present invention includes a hub 328 connected to a rotation shaft Ax, a plurality of blades 325 installed at regular intervals on the outer circumferential surface of the hub 328, and the hub 328 It includes a shroud 32 spaced apart from and disposed to surround the hub 328 and connected to one end of the plurality of blades 325 .

The fan 320 may further include a back plate 324 provided with a hub 328 to which a central axis of rotation is coupled. Depending on the embodiment, the back plate 324 and the shroud 32 may be omitted. The hub 328 has a cylindrical shape with an outer circumferential surface parallel to the axis of rotation Ax.

A plurality of blades 325 extending from the back plate 324 may be provided. The blade 325 may extend so that the outline of the blade 325 forms a curve.

The blades 325 constitute the rotary blades of the fan 320 and perform a function of transferring kinetic energy of the fan 320 to the fluid. A plurality of blades 325 may be provided at predetermined intervals, and may be arranged radially on the back plate 324 . One end of the plurality of blades 325 is connected to the outer circumferential surface of the hub 328 .

In addition, the shroud 32 is connected (coupled) with one end of the blade 325. The shroud 32 is formed at a position opposite to the back plate 324 and may be formed in a circular ring shape. The shroud 32 and the hub 328 share a rotation axis Ax as a center.

The shroud 32 has a suction end 321 through which fluid is introduced and a discharge end 323 through which fluid is discharged. The shroud 32 may be formed to be curved such that its diameter decreases from the discharge end 323 toward the suction end 321.

That is, a connection part 322 connecting the suction end 321 and the discharge end 323 in a curved line may be included. The connecting portion may be rounded with a curvature such that the inner cross-sectional area of the shroud 32 is widened.

The shroud 32 may form a fluid movement passage together with the back plate 324 and the blade 325 . Looking at the moving direction of the fluid, it can be seen that the fluid introduced in the direction of the central axis flows in the circumferential direction of the fan 320 due to the rotation of the blade 325 .

That is, the fan 320 may discharge the fluid in the radial direction of the fan 320 by increasing the flow rate with centrifugal force.

The shroud 32 coupled to the end of the blade 325 may be formed spaced apart from the back plate 324 by a predetermined distance. The shroud 32 is provided so that a surface facing parallel to the back plate 324 is formed.

Hereinafter, the blade 325 and the notch 40 formed in the blade 325 will be described in detail.

30 and 31, each blade 325 has a leading edge 33 defining one side in the direction in which the hub 328 rotates, and a trailing edge defining one side in the direction opposite to the leading edge 33. The negative pressure surface 34 connecting the top of the edge 37, the leading edge 33 and the top of the trailing edge 37 and having a larger area than the leading edge 33 and the trailing edge 37, the leading edge ( 33) and a pressure surface 36 connecting the lower end of the trailing edge 37 and facing the negative pressure surface 34;

That is, each blade 325 is shaped like a plate, and the negative pressure surface 34 and the pressure surface 36 define wide upper and lower surfaces of the blade 325, and both ends in the longitudinal direction form both sides of the blade 325, , both ends in the width direction (left-right direction in FIG. 31) crossing the length direction form the leading edge 33 and the trailing edge 37. Areas of the trailing edge 37 and the leading edge 33 are smaller than those of the negative pressure surface 34 and the pressure surface 36 .

The leading edge 33 is located above the trailing edge 37 (refer to FIG. 31).

A plurality of notches 40 are formed on each blade 325 to reduce noise generated by the fan and the sharpness of the noise.

Each notch 40 may be formed over a portion of the leading edge 33 and a portion of the negative pressure surface 34 . In addition, each notch 40 may be formed by recessing a corner 35 where the leading edge 33 and the negative pressure surface 34 meet downward. That is, each notch 40 is formed over a middle upper portion of the leading edge 33 and a partial region adjacent to the leading edge 33 on the negative pressure surface 34 .

The cross-sectional shape of the notch 40 is not limited and may have various shapes. However, in order to reduce fan efficiency and noise, the cross-sectional shape of the notch 40 is preferably U-shaped or V-shaped. The shape of the notch 40 will be described later.

The width W of the notch 40 may increase from the bottom to the top. The width W of the notch 40 may gradually or stepwise expand toward the top.

The direction of the notch 40 may be a tangential direction of an arbitrary circumference centered on the axis of rotation Ax. Here, the direction of the notch 40 means the direction of the length L11 of the notch 40 . That is, the same cross-sectional shape of the notch 40 extends in the tangential direction of the circumference.

The notch 40 may be formed along an arc of an arbitrary circumference centered on the axis of rotation Ax of the fan 320 . That is, the notch 40 may have a curved shape. Specifically, the same cross-sectional shape of the notch 40 is formed along the circumference.

The depth H11 of the notch 40 may decrease as the distance from the point where the leading edge 33 and the negative pressure surface 34 meet is increased. The depth H11 of the notch 40 is high in the center and decreases toward both ends in the longitudinal direction.

Hereinafter, the shape of each notch 40 will be described in detail. In this embodiment, the cross-sectional shape of the notch 40 is V-shaped.

Specifically, the notch 40 is a first inclined surface 42, a second inclined surface 43 facing the first inclined surface 42 and connected to the lower end of the first inclined surface 42, the first inclined surface 42 and the second inclined surface 42 The inclined surface 43 may include a bottom line 41 defined by being connected thereto.

The separation distance between the first inclined surface 42 and the second inclined surface 43 may increase in an upward direction. The separation distance between the first inclined surface 42 and the second inclined surface 43 may gradually increase or may increase stepwise. The first inclined surface 42 and the second inclined surface 43 may be flat or curved. The first inclined surface 42 and the second inclined surface 43 may have a triangular shape.

The bottom line 41 may extend in a tangential direction of an arbitrary circumference centered on the axis of rotation Ax. As another example, it may extend along an arbitrary circumference centered on the rotational axis Ax. That is, the bottom line 41 may form an arc centered on the rotation axis Ax.

The bottom line 41 is equal to the length L11 of the notch 40 . The direction of the bottom line 41 means the direction of the notch 40 . The direction of the bottom line 41 may be a direction for reducing flow separation occurring at the leading edge 33 and the negative pressure surface 34 and reducing air resistance.

Specifically, the bottom line 41 may have an inclination of 0 degrees to 10 degrees with respect to a horizontal plane perpendicular to the rotation axis Ax. Preferably, the bottom line 41 may be parallel to a horizontal plane perpendicular to the axis of rotation Ax. Accordingly, resistance can be reduced by the notch 40 while the blade 325 rotates.

The length L11 of the bottom line 41 may be longer than the height H22 of the leading edge 33 . If the length L11 of the bottom line 41 is too short, flow separation occurring on the negative pressure surface 34 cannot be reduced, and if the length L11 of the bottom line 41 is too long, the efficiency of the fan is reduced. am.

The length L11 of the notch 40 (the length L11 of the bottom line 41 ) may be greater than the depth H11 of the notch 40 and the width W of the notch 40 . Preferably, the length L11 of the notch 40 is 5 mm to 6.5 mm, the depth H11 of the notch 40 is 1.5 mm to 2.0 mm, and the width W of the notch 40 is 2.0 mm to 2.2 mm. can be mm.

The length L11 of the notch 40 is 2.5 to 4.33 times the depth H11 of the notch 40, and the length L11 of the notch 40 is 2.272 to 3.25 times the width W of the notch 40. can be a boat

One end of the bottom line 41 is located on the leading edge 33, and the other end of the bottom line 41 is located on the negative pressure surface 34. The position of the point where one end of the bottom line 41 is located in the leading edge 33 is preferably a middle height of the leading edge 33 .

The distance between the corner 35 and the point where one end of the bottom line 41 is located on the leading edge 33 is the distance between the corner 35 and the point where the other end of the bottom line 41 is located on the negative pressure surface 34. It may be less than the separation distance.

The position of the point where the other end of the bottom line 41 is located on the negative pressure surface 34 is preferably located between 1/5 and 1/10 of the width of the negative pressure surface 34 .

The angle A11 formed by the bottom line 41 and the negative pressure surface 34 and the angle A12 formed by the bottom line 41 and the leading edge 33 are not limited. An angle A11 formed between the bottom line 41 and the negative pressure surface 34 is preferably smaller than an angle A12 formed between the bottom line 41 and the leading edge 33 .

It is preferable that three notches 40 are provided. The notch 40 includes a first notch 40 and a second notch 40 located farther from the hub 328 than the first notch 40 and a position further from the hub 328 than the second notch 40. A third notch 40 may be included. It is preferable that the separation distance between each notch 40 is 6 mm to 10 mm. The separation distance between each notch 40 may be greater than the depth H11 of the notch 40 and the width W of the notch 40 .

The leading edge 33 is divided into a first area S1 adjacent to the hub 328 and a second area S2 adjacent to the shroud 32 based on the center, and two of the three notches 40 are It is located in the first region S1, and the remaining notch 40 may be located in the second region S2.

Specifically, the first notch 40 and the second notch 40 may be positioned in the first area S1 and the third notch 40 may be positioned in the second area S2. More specifically, the distance from the hub 328 of the first notch 40 is 19% to 23% of the length of the leading edge 33, and the distance from the hub 328 of the second notch 40 is the leading edge ( 33), and the separation distance from the hub 328 of the first notch 40 may be 65% to 69% of the length of the leading edge 33.

Among the plurality of notches 40 , a notch 40 spaced farthest from the hub 328 may have the longest length. Specifically, the length L11 of the third notch 40 is greater than the length L11 of the second notch 40, and the length L11 of the second notch 40 is the length of the first notch 40 ( L11) may be greater.

Through the shape, arrangement, and number of the notches 40, flow separation generated from the blades 325 of the fan can be reduced, and as a result, noise generated from the fan can be reduced.

Referring to FIG. 32, some of the fluid passing through the leading edge 33 causes turbulence in the flow passing through the notch 40 and flows along the wing surface, mixing with the fluid passing through the leading edge 33. Therefore, the flow separation does not occur on the surface of the wing and the flow flows along the surface, thereby improving noise.

Referring to FIGS. 33 and 34 , when examining the noise and sharpness of the general fan (comparative example) and the embodiment in the same environment, it can be seen that the noise and sharpness are clearly reduced.

Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. should be interpreted

100: case
110: first tower 114: first outer wall
115: first inner wall 117: first discharge port
119: first board slit
120: second tower 124: second outer wall
125: second inner wall 127: second outlet
129: second board slit
130: tower base 140: tower case
150: base case 160: air guide
200: filter
400: air current converter 410: space board
420: guide motor 430: board guider (430)
440: airflow converter cover
500: heater 510: support member
511: upper horizontal plate 512: vertical plate
513: lower horizontal plate
520: heating tube 530: pin
540: flow path shielding member

Claims (20)

Tower case for discharging sucked air; and
Including an air flow converter that changes the direction of the air discharged from the tower case,
The airflow converter,
a guide motor disposed in the tower case and providing a driving force;
a space board installed in the tower case and reciprocating between the inside of the tower case and the outside of the tower case;
a board guider connected to the space board and transmitting the driving force of the guide motor to the space board as a linear motion force; and
A fan device for an air conditioner comprising a friction reducing protrusion preventing surface contact by spacing the board guider and the space board apart. According to claim 1,
The friction reducing protrusion,
A fan device for an air conditioner formed on the board guider, protruding from a surface facing the space board, and contacting the space board. According to claim 1,
The friction reducing protrusion,
A fan device for an air conditioner formed on the space board, protruding from a surface facing the board guider, and contacting the space board. According to claim 1,
The space board moves along a first direction,
The friction reducing protrusion extends in a first direction. According to claim 4,
The first direction is a fan device for an air conditioner in a horizontal direction. According to claim 4,
The fan device for an air conditioner according to claim 1 , wherein a plurality of the friction reducing protrusions are spaced apart and arranged in a second direction crossing the first direction. According to claim 1,
The airflow converter,
A fan device for an air conditioner further comprising a roller installed on one of the tower case and the space board to separate the tower case and the space board. According to claim 7,
The roller is a fan device for an air conditioner located under the space board. According to claim 1,
The airflow converter,
A fan device for an air conditioner further comprising a guide pin spaced apart from the tower case and the space board and installed on one of the tower case and the space board. According to claim 1,
The board guider,
And a first slit for guiding the movement of the space board,
The space board,
A fan device for an air conditioner comprising a first protrusion, at least a portion of which is inserted into the first slit and slides along the first slit. According to claim 10,
The first slit,
A fan device for an air conditioner including a slit inclined portion inclined downward from a horizontal direction to a blowing space direction. According to claim 10,
The first slit,
A fan device for an air conditioner comprising a slit inclined portion having a height lower in a portion close to the blowing space than in a portion farther from the blowing space. According to claim 11 or 12,
The first slit,
The fan device for an air conditioner further comprises a vertical portion having a lower end connected to an upper end of the slit inclined portion and extending in a longitudinal direction of the board guider. According to claim 1,
The airflow converter,
a pinion gear coupled to the shaft of the guide motor;
A fan device for an air conditioner comprising: a rack connected to the pinion gear and transmitting the rotational force of the guide motor to the board guider in a linear motion. According to claim 14,
The rack is a fan device for an air conditioner formed on a rear surface opposite to a surface facing the space board in the board guider. According to claim 1,
The discharge port formed in the tower case extends in a second direction,

The board guider is a fan device for an air conditioner that moves along the second direction. According to claim 1,
The airflow converter,
A fan device for an air conditioner further comprising a guide body for guiding movement of the board guider. According to claim 17,
The guide body further includes a body protrusion protruding in a direction crossing the longitudinal direction of the guide body,
The board guider further includes a second slit into which the body protrusion is inserted and guided. Tower case for discharging sucked air; and
Including an air flow converter that changes the direction of the air discharged from the tower case,
The airflow converter,
a guide motor providing driving force;
a space board reciprocating between the inside of the tower case and the outside of the tower case;
a board guider connected to the space board and transmitting the driving force of the guide motor to the space board as a linear motion force; and
A fan device for an air conditioner comprising a roller that separates the tower case and the space board and is installed on one of the tower case and the space board. According to claim 19,
The space board further includes a first protrusion guided to a slit formed in the board guider,
The roller is installed on the space board,
The roller and the first protrusion are positioned biased to one side in the width direction of the space board.

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