Ceiling type air conditioner

Abstract

A ceiling type air conditioner includes a case having an inlet and an outlet, a heat exchanger disposed inside the case to exchange heat with air drawn in through the inlet, a blower configured to flow the air that has exchanged heat with the heat exchanger so that the air that has exchanged heat is discharged through the outlet, and a vane unit configured to guide the air discharged to the outlet. The vane unit includes a main vane, a sub vane, and a guide link disposed to guide movement of the sub vane.

Description

[0001] This application is a continuation of International Application No. PCT / KR2021 / 010340, filed on August 5, 2021, pursuant to 35 U.SC §111(a), which is based on Korean Patent Application No. 10-2020-0100337, filed on August 11, 2020, and Korean Patent Application No. 10-2021-0102496, filed on August 4, 2021, and claims priority under 35 USC §119, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] This disclosure relates to a ceiling-mounted air conditioner, and more specifically, to a ceiling-mounted air conditioner including a blade structure for controlling the direction of airflow discharged from an indoor unit. Background Technology

[0003] Generally, ceiling-mounted air conditioners refer to devices that use a refrigeration cycle to regulate temperature, humidity, airflow, etc., to suit human activities while removing dust and other pollutants from the air.

[0004] Ceiling-mounted air conditioners consist of an outdoor unit and an indoor unit. The outdoor unit includes a compressor, an outdoor heat exchanger, an expansion device, etc., while the indoor unit includes an indoor heat exchanger, a blower, etc., and the expansion device can be installed in the indoor unit.

[0005] Furthermore, the comfort level experienced by occupants can vary significantly depending on the direction of the airflow exhausted from the indoor unit of a ceiling-mounted air conditioner. For example, during cooling operation, the exhausted air tends to fall downwards, and occupants directly exposed to this air may experience increased discomfort. Therefore, it is important to gradually control the temperature of the indoor space by distributing the air horizontally over a greater distance to prevent the exhausted air from falling directly downwards. On the other hand, during heating operation, the exhausted air tends to rise upwards, which may lower the perceived temperature in the space directly below the air conditioner where occupants are positioned. Therefore, it is important to distribute the exhausted air downwards over a greater distance. Summary of the Invention

[0006] Other aspects will be set forth in part in the description which follows, and in part will be readily understood from the description, or may be learned by practice of the provided embodiments.

[0007] According to one aspect of this disclosure, a ceiling-mounted air conditioner is provided, the ceiling-mounted air conditioner comprising: an inlet for drawing in air; a heat exchanger configured to exchange heat between the drawn-in air and a refrigerant; a blower configured to convey the heat-exchanged air to an outlet; and blades configured to guide the movement of the air discharged to the outlet.

[0008] The blade may include: a main blade, coupled to a rotation axis to be rotatable relative to a first rotation center and disposed at an end of the blade; a hinge, rotatably coupled to a guide member of the main blade; a connecting rod having one end configured to rotate relative to a second rotation center and another end coupled to the hinge to allow the hinge to rotate according to the rotation of the main blade; and a secondary blade, rotatably coupled to the hinge and rotating according to the rotation of the main blade by contacting the guide member of the main blade.

[0009] The hinge may include a first rotary joint portion connected to the guide member, a second rotary joint portion connected to the connecting rod, and a third rotary joint portion connected to the auxiliary blade.

[0010] The first rotary joint portion may include a through hole through which the connector of the guide member passes, the second rotary joint portion may include a connector through a through hole disposed at the other end of the connecting rod, and the third rotary joint portion may include a through hole through which the connector of the auxiliary blade passes.

[0011] The hinge is rotatable on the first rotary joint portion.

[0012] The distance between the second rotation center and the second rotary joint portion can be longer than the distance between the first rotation center and the first rotary joint portion.

[0013] The position of the first rotary joint portion can be set lower than the position of the second rotary joint portion.

[0014] The distance between the second rotation center and the second rotary joint portion can be shorter than the distance between the first rotation center and the first rotary joint portion.

[0015] The position of the first rotary joint portion can be set higher than the position of the second rotary joint portion.

[0016] The guiding member may include a contact member configured to contact the secondary blade to guide the rotation of the secondary blade.

[0017] The secondary blade may include a contact portion that contacts the guide member.

[0018] The contact member may include a first gear having a toothed shape, and the contact portion of the secondary blade may include a second gear configured to mesh with the first gear.

[0019] The contact member may include a contact surface having an arcuate shape, and the contact portion of the secondary blade may include a downwardly inclined surface.

[0020] The main blade may further include a connecting member rotatably coupled to the rotating shaft and a main body member coupled to the connecting member, and the secondary blade may further include a panel portion extending from the contact portion.

[0021] Each of the main body component and the panel portion may include multiple holes through which air can pass.

[0022] The rotating shaft can be driven by a stepper motor.

[0023] According to another aspect of this disclosure, a ceiling-mounted air conditioner is provided, which is suspended from or installed in the ceiling. The ceiling-mounted air conditioner includes: a housing including an inlet and an outlet; a heat exchanger disposed inside the housing; a blower configured to draw air into the housing through the inlet and discharge air outside the housing through the outlet; a main blade configured to rotate on a rotation axis to open the outlet for discharging air; and a secondary blade coupled to face the inner side of the main blade and configured to rotate in a direction away from the inner side of the main blade according to the rotation of the main blade to guide air such that the air is discharged in a direction away from the outlet.

[0024] The main blade can rotate at a predetermined angle relative to the outlet, so that air is discharged in a predetermined amount.

[0025] During heating operation, the main blade can be rotated to the underside of the outlet, and the secondary blade can be rotated to face the same direction as the main blade.

[0026] During cooling operation, the secondary blades can be rotated to point in front of the outlet.

[0027] According to another aspect of this disclosure, a ceiling-mounted air conditioner is provided, the ceiling-mounted air conditioner comprising: a housing having an inlet and an outlet; a heat exchanger disposed inside the housing for heat exchange with air drawn in through the inlet; a blower configured to circulate the air that has exchanged heat with the heat exchanger, such that the heat-exchanged air is discharged to the outlet; and a blade unit configured to guide the air discharged to the outlet, wherein the blade unit comprises: a main blade configured to be rotatable relative to a first rotation center to open and close the outlet; a secondary blade, wherein, depending on the rotation of the main blade, one side of the secondary blade becomes closer to the first rotation center and the other side of the secondary blade becomes farther away from the first rotation center, thereby increasing the distance that the air discharged to the outlet can reach; and a guide link configured to rotate relative to a second rotation center in association with the rotation of the main blade and connected to the side of the secondary blade to guide the movement of the secondary blade.

[0028] The secondary blade may include: a first connector portion rotatably coupled to the main blade; and a second connector portion rotatably coupled to the guide link.

[0029] The guide link may include: a first end portion configured to form the second rotation center; and a second end portion rotatably coupled to the second connector portion of the auxiliary blade.

[0030] The auxiliary blades can be configured to adjust the discharge direction of the air discharged to the outlet.

[0031] The main blade is rotatable between a first position and a second position, and when the main blade is in the first position, the first joint portion of the secondary blade is positioned above the second joint portion, and when the main blade is in the second position, the first joint portion of the secondary blade is positioned below the second joint portion.

[0032] During the heating operation, the main blade can be positioned in the second position.

[0033] The secondary blade may further include a first surface and a second surface. When the main blade is in the first position, the first surface faces the main blade, and the second surface is opposite to the first surface.

[0034] When the main blade is in the second position, the first surface of the auxiliary blade can be configured to guide the air discharged to the outlet, and a portion of the second surface of the auxiliary blade can be configured to face the main blade.

[0035] As the main blade and the secondary blade rotate, the angle between the main blade and the secondary blade can be set to increase.

[0036] The distance between the second rotation center and the second connector portion can be set to be shorter than the distance between the first rotation center and the first connector portion.

[0037] The blade unit may also include a motor configured to provide rotational force, and the main blade may be configured to be coupled to a rotating shaft of the motor.

[0038] The blade unit may include: a motor configured to provide rotational force; a first drive link configured to be coupled to the rotational shaft of the motor; and a second drive link having one end coupled to the first drive link and another end coupled to the main blade, the second drive link being configured to guide the movement of the main blade such that the main blade rotates relative to the first rotation center.

[0039] The main blade may include a main blade body and a plurality of first discharge holes passing through the main blade body; the secondary blade may include a secondary blade body and a plurality of second discharge holes passing through the secondary blade body; and the blade unit may be configured to discharge air through the plurality of first discharge holes and the plurality of second discharge holes.

[0040] The secondary blade can rotate in the same direction as the main blade.

[0041] The blade unit can be configured to operate in a first mode, a second mode, and a third mode. The first mode is used to discharge air through a plurality of first discharge holes formed in the main blade and a plurality of second discharge holes formed in the auxiliary blade. The second mode is used to guide the air discharged to the outlet in a downward direction. The third mode is used to guide the air discharged to the outlet in a horizontal direction. Attached Figure Description

[0042] The above and other aspects, features, and advantages of specific embodiments of the present disclosure will be more readily understood by taking into account the accompanying drawings and the following description, in which:

[0043] Figure 1 This is a perspective view showing a ceiling-mounted air conditioner according to an embodiment of the present disclosure.

[0044] Figure 2 It is along Figure 1 A cross-sectional view of line II-II' of the ceiling-mounted air conditioner.

[0045] Figure 3 It is shown in Figure 1 A 3D diagram showing the rotating blades in a ceiling-mounted air conditioner.

[0046] Figure 4 It is shown Figure 3 A magnified view of part of the letter "A".

[0047] Figure 5 It is shown Figure 3 The image shows a three-dimensional view of the blade.

[0048] Figure 6 It is shown Figure 5 The side view of the blade shown.

[0049] Figure 7 It is shown Figure 5 A magnified view of part "B".

[0050] Figure 8 It is shown Figure 7 A magnified view of part of the "C".

[0051] Figure 9 It is shown Figure 8The diagram shows the guide member and the auxiliary blade in contact with each other.

[0052] Figure 10 It is shown Figure 1 A schematic diagram illustrating the operation process of the blades in a ceiling-mounted air conditioner.

[0053] Figure 11 It is shown in Figure 1 A schematic diagram of the blades in a ceiling-mounted air conditioner when the outlet is closed.

[0054] Figure 12 This is a perspective view showing a ceiling-mounted air conditioner according to another embodiment of the present disclosure.

[0055] Figure 13 It is shown Figure 12 The image shows a perspective view of the blades of a ceiling-mounted air conditioner.

[0056] Figure 14 It is shown Figure 13 A magnified view of part of the "D".

[0057] Figure 15 It is shown Figure 13 The side view of the blade shown.

[0058] Figure 16 It is along Figure 14 The cross-sectional view taken by line XVI-XVI' in the diagram.

[0059] Figure 17 This is a perspective view showing a ceiling-mounted air conditioner according to another embodiment of the present disclosure.

[0060] Figure 18 It is along Figure 17 The cross-sectional view taken from line III-III' in the diagram.

[0061] Figure 19 It is shown schematically. Figure 17 The diagram shows the connection between the air conditioner casing and the blades.

[0062] Figure 20 It is shown Figure 17 The image shows a three-dimensional view of the air conditioner blades.

[0063] Figure 21 It is shown Figure 20 A magnified view of part of the "E".

[0064] Figure 22 It is shown Figure 20 The side view of the blade shown.

[0065] Figure 23 It is shown Figure 17A schematic diagram illustrating the operation of the blades in an air conditioner.

[0066] Figure 24 This is a perspective view showing a ceiling-mounted air conditioner according to yet another embodiment of the present disclosure.

[0067] Figure 25 It is along Figure 24 The cross-sectional view taken from line IV-IV' in the diagram.

[0068] Figure 26 It is shown Figure 24 The image shows a three-dimensional view of the air conditioner blades.

[0069] Figure 27 It is shown Figure 26 An enlarged view of part "F" shown.

[0070] Figure 28 It is shown Figure 26 The side view of the blade shown.

[0071] Figure 29 It is shown Figure 24 A schematic diagram illustrating the operation of the blades in an air conditioner. Detailed Implementation

[0072] At the time of filing this application, the embodiments described in the specification and the constructions shown in the accompanying drawings are merely exemplary examples of this disclosure, and various modifications may replace the embodiments and drawings of this disclosure.

[0073] Furthermore, the same symbols or numbers in the accompanying drawings of this disclosure are configured to represent components or elements that perform substantially the same function.

[0074] Furthermore, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. It should be further understood that the terms “comprising,” “including,” “having,” and / or “containing” specify the presence of the stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0075] Furthermore, it should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements are not limited by these terms, and these terms are only used to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term “and / or” includes a combination of one or all of the associated listed items.

[0076] Furthermore, the terms "front-rear direction," "front side," "rear side," "upper part," "lower part," "upper side," "lower side," etc., used in the following description are defined based on the accompanying drawings, and these terms do not limit the shape and position of each component. For example, the direction of air discharged from the exhaust port (outlet) 17 described below can be defined as front, and the direction opposite to front can be defined as rear. Specifically, the direction facing inlet 15 can be referred to as rear, and the direction opposite to rear can be referred to as front.

[0077] One aspect of this disclosure provides a ceiling-mounted air conditioner that allows air discharged from an indoor unit to travel a long distance.

[0078] Another aspect of this disclosure provides an air conditioner capable of controlling the direction of airflow at various angles without reducing the amount of air.

[0079] According to one aspect of this disclosure, a ceiling-mounted air conditioner is provided, comprising: an inlet for drawing in air; a heat exchanger configured to exchange heat between the drawn-in air and a refrigerant; a blower configured to convey the heat-exchanged air to an outlet; and blades configured to guide the movement of the air discharged to the outlet.

[0080] According to one aspect of this disclosure, the comfort of occupants can be improved by using secondary blades to prevent cold airflow from falling downwards during cooling operations.

[0081] The perceived temperature for occupants during heating operations can be increased by using secondary blades to allow air to travel a long distance.

[0082] A windless airflow can be achieved when the blades are closed by applying a porous structure to the surface of the main blades and auxiliary blades.

[0083] In the following description, embodiments will be described in detail with reference to the accompanying drawings.

[0084] Figure 1 This is a perspective view showing a ceiling-mounted air conditioner according to an embodiment of the present disclosure. Figure 2 It is along Figure 1 A cross-sectional view of line II-II' of the ceiling-mounted air conditioner.

[0085] Reference Figure 1 and Figure 2 The air conditioner 1 includes a housing 20 having an inlet 15 and an outlet (also referred to as an "outlet") 17, a heat exchanger 30 for exchanging heat with the air flowing into the housing 20, and a blower 40 for circulating air to the interior or exterior of the housing 20.

[0086] The air conditioner 1 shown in this disclosure is a ceiling-mounted air conditioner 1 that is suspended from or embedded in the ceiling, but this disclosure is not limited thereto. For example, the air conditioner 1 according to this disclosure may be a wall-mounted air conditioner or a floor-standing air conditioner.

[0087] The housing 20 can be configured to form the overall appearance of the air conditioner 1.

[0088] The blower 40 may be arranged inside the housing 20. The blower 40 may be a crossflow fan whose length direction is the same as that of the housing 20. The blower 40 can blow air, so that air is drawn in from the inlet 15 and discharged to the outlet.

[0089] The heat exchanger 30 can be arranged adjacent to the blower 40, preferably between the inlet 15 and the blower 40. With this configuration, outside air can be drawn in through the inlet 15 and exchange heat with the heat exchanger 30, and then the air that has undergone heat exchange can be discharged to the outside through the outlet 17.

[0090] Air conditioner 1 may include blades 100 configured to open and close outlet 17. Blade 100 may be referred to as “blade unit 100” or “blade assembly 100”.

[0091] The blade 100 can be rotatably mounted on the housing 20. The blade 100 can be configured to rotate relative to a rotation axis. The rotation axis of the blade 100 can be located on the inner surface of the housing 20.

[0092] The blade 100 may include a main blade 110 for guiding air movement and an auxiliary blade 120 incorporated into the main blade 110 to guide air further.

[0093] The main blade 110 may be sized to correspond to the size of the outlet 17. Therefore, the main blade 110 can close the outlet 17. In this case, air can pass through the multiple holes 110h of the main blade 110 (see...). Figure 11 It is discharged to the outside of the housing 20.

[0094] The secondary blade 120 may be configured to be smaller than the primary blade 110. The secondary blade 120 may be arranged to face the inner surface of the primary blade 110 when the outlet 17 is closed by the primary blade 110. In this case, air may pass through the plurality of holes 120h of the secondary blade 120 and then through the plurality of holes 110h of the primary blade 110 to flow to the outside (see...). Figure 11In other words, with the main blade 110 closing the outlet 17, air can be discharged outside the casing 20 through multiple holes 110h of the main blade 110 and multiple holes 120h of the secondary blade 120. In other words, the air conditioner can perform a windless operation by achieving a windless airflow to discharge air to the outside. Here, windless operation can refer to a low-volume operation that discharges air at a speed less than or equal to a predetermined rate while preventing air from being directly blown towards the user.

[0095] On the other hand, such as Figure 1 and Figure 2 As shown, when the main blade 110 opens the outlet 17, the secondary blade 120 can be arranged to point in front of the outlet 17, so that the air discharged through the outlet 17 can be guided in front of the outlet 17.

[0096] Air conditioner 1 can be controlled by blades 100 to discharge air from blower 40 through multiple holes 110h and 120h or directly through outlet 17.

[0097] Figure 3 It is shown in Figure 1 A 3D diagram showing the rotation of blades in a ceiling-mounted air conditioner. Figure 4 It is shown Figure 3 A magnified view of part of the "A". Figure 5 It is shown Figure 3 The three-dimensional view of the blade shown. Figure 6 It is shown Figure 5 The side view of the blade shown. Figure 7 It is shown Figure 5 A magnified view of part of the "B". Figure 8 It is shown Figure 7 A magnified image of part of the "C". Figure 9 It is shown Figure 8 The diagram shows the state in which the guide member and the auxiliary blade are in contact with each other. Figure 10 It is shown Figure 1 A schematic diagram illustrating the operation process of the blades in a ceiling-mounted air conditioner.

[0098] Reference Figures 3 to 6 The blade 100 includes a main blade 110, a hinge 130, a connecting rod 140, and a secondary blade 120.

[0099] In order for the opposite side ends of the secondary blade 120 to engage with the main blade 110, each of the hinge 130, connecting rod 140 and guide member 115, which will be described below, can be provided in pairs.

[0100] The main blade 110 is coupled to a rotating shaft (not shown) and rotates relative to a first rotation center C1. The main blade 110 includes a shaft engagement hole for coupling with the rotating shaft. Figure 6(113 in the text). The main blade 110 includes a guide member 115 disposed at its end 111. The guide member 115 is configured to protrude from the end 111 of the main blade 110.

[0101] The hinge 130 is rotatably coupled to the guide member 115, such that the hinge 130 can rotate on the coupling portion (first rotary joint portion) of the hinge 130 coupled to the guide member 115.

[0102] The main blade 110 includes a connecting member 110A rotatably coupled to a rotating shaft, and a main body member 110B connected to the connecting member 110A and configured in a plate shape. The connecting member 110A is coupled to the rotating shaft and is rotatable according to the rotation of the rotating shaft. The main body member 110B may include a plurality of air-permeable holes 110h, and a guide member 115 may be disposed on the main body member 110B.

[0103] One end of the connecting rod 140 can be rotatably coupled to the inner surface of the housing 20, and the other end can be rotatably coupled to the hinge 130. For example, as Figure 4 As shown, one side of the connecting rod 140 can be coupled to the support member 22 of the coupling member 110A fixed to the main blade 110. The support member 22 can be configured to be bent downward from the inner surface of the housing 20.

[0104] The connecting rod 140 can be configured to rotate relative to the second rotation center C2. The connecting rod 140 can be coupled to the support member 22 such that the second rotation center C2 is positioned further forward than the first rotation center C1 of the main blade 110. The connecting rod 140 allows the hinge 130 to rotate according to the rotation of the main blade 110, as will be described below.

[0105] The secondary blade 120 can be rotatably coupled to the hinge 130 and can rotate by contacting the guide member 115 of the main blade 110 in response to the rotation of the hinge 130.

[0106] Reference Figure 7 The air conditioner 1 may also include a drive motor 150 for rotating the rotating shaft by transmitting driving force to it. In this case, when a variable reluctance stepper motor with excellent rotational angular resolution is used for the drive motor 150, it is possible to freely realize both an oscillation mode requiring the blades 100 to change in a stepping direction and an oscillation mode requiring the blades 100 to change in a continuous direction. However, this disclosure is not limited thereto, and any power unit may be used as the drive motor 150, as long as it can realize both stepping direction changes and continuous direction changes of the blades 100.

[0107] Reference Figure 6 and Figure 8The hinge 130 includes a first rotary joint portion 131 connected to the guide member 115, a second rotary joint portion 132 connected to the connecting rod 140, and a third rotary joint portion 133 connected to the auxiliary blade 120.

[0108] The first rotary joint portion 131 may include a through hole (not shown) through which the connector 116 of the guide member 115 passes; the second rotary joint portion 132 may include a connector 134 through which a through hole (not shown) is provided at the other end of the connecting rod 140; and the third rotary joint portion 133 may include a through hole (not shown) through which the connector 121 of the auxiliary blade 120 passes.

[0109] The connecting rod 140 can be configured such that the distance between the second rotation center C2 and the second rotary joint portion 132 is shorter than the distance between the first rotation center C1 and the first rotary joint portion 131. In this case, the hinge 130 can rotate on the first rotary joint portion 131, and the position of the first rotary joint portion 131 can be set higher than the position of the second rotary joint portion 132.

[0110] Therefore, when the main blade 110 rotates, the connecting rod 140 rotates with a radius smaller than that of the main blade 110, which causes the hinge 130 to be pulled along the first direction 51. When the connecting rod 140 pulls the periphery of the second rotary joint portion 132 of the hinge 130 along the first direction 51, the hinge 130 rotates clockwise on the first rotary joint portion 131.

[0111] Therefore, the secondary blade 120, which is coupled to the hinge 130 via the third rotary joint portion 133, rotates according to the rotation of the hinge 130 to contact the guide member 115 of the main blade 110. The secondary blade 120, arranged facing the inner surface of the main blade 110, can rotate in a direction away from the inner surface of the main blade 110. The secondary blade 120 can be arranged parallel to the main blade 110 to guide air further.

[0112] Reference Figure 9 The guide member 115 may include a contact member 115a, which is configured to contact the secondary blade 120 to guide the rotation of the secondary blade 120. The contact member 115a may include a contact surface 115aa having an arcuate shape.

[0113] The secondary blade 120 may include a contact portion 120a configured to contact a contact member 115a of the guide member 115 and a panel portion 120b having a flat shape and extending from the contact portion 120a. The contact portion 120a may include a downwardly inclined surface 120aa. The downwardly inclined surface 120aa may be configured to form a predetermined angle θ relative to the panel portion 120b.

[0114] When the secondary blade 120 is raised by the rotation of the hinge 130, causing the contact portion 120a of the secondary blade 120 to contact the contact member 115a of the guide member 115, the maximum distance D from the first rotary joint portion 131 to the contact surface 115aa can be equal to the distance from the first rotary joint portion 131 to the downwardly inclined surface. In this case, the contact surface 115aa of the guide member 115 and the downwardly inclined surface 120aa of the secondary blade 120 are in contact with each other, allowing the secondary blade 120 to rotate along the guide member 115.

[0115] Reference Figure 10 With the main blade 110 closing the outlet 17, the auxiliary blade 120 is connected to the main blade 110 via a hinge 130 and is arranged to face the inner surface of the main blade 110, as shown below. Figure 10 As shown in Figure (a).

[0116] When the main blade 110 rotates by a predetermined angle to open the outlet 17, the connecting rod 140 is configured such that the distance between the second rotation center C2 and the second rotary joint portion 132 is shorter than the distance between the first rotation center C1 and the first rotary joint portion 131, thereby causing the hinge 130 to rotate and the auxiliary blade 120 to gradually rise, as... Figure 10 As shown in Figures (b) and (c).

[0117] As the main blade 110 rotates further downward, the secondary blade 120 also rotates further and comes into contact with the guide member 115. In this case, as... Figure 10 As shown in Figure (d), when the secondary blade 120 is arranged toward the front of the outlet 17, the rotation of the main blade 110 stops, so that the air discharged to the outlet 17 can be guided to move toward the front of the outlet 17.

[0118] In this case, because the main blade 110 rotates at a predetermined angle relative to the outlet 17, causing air to be discharged in a predetermined amount, and the secondary blade 120 is arranged to guide forward, air can be guided to the front of the outlet 17, while ensuring a sufficient amount of air, compared to the general case where the blades are arranged in front of and adjacent to the outlet 17.

[0119] When the main blade 110 and the secondary blade 120 are arranged as described above, the cold air will not fall downwards during the cooling operation of the air conditioner, thereby preventing the occupants from being directly exposed to the air and preventing increased discomfort.

[0120] On the other hand, when in Figure 10 As the main blade 110, in the state shown in Figure (d), rotates further, the secondary blade 120 also rotates further along the guide member 115, and is thus arranged to point in the same direction as the main blade 110, as shown in Figure (d). Figure 10As shown in Figure (e), when the main blades 110 and the secondary blades 120 are arranged in such a way that the air discharged during the heating operation of the air conditioner can move downwards to a distance rather than upwards, thereby preventing a decrease in the perceived temperature of the occupants in the space below the air conditioner where the occupants are located.

[0121] Figure 12 This is a perspective view showing a ceiling-mounted air conditioner according to another embodiment of the present disclosure. Figure 13 It is shown Figure 12 A 3D diagram of the blades of a ceiling-mounted air conditioner. Figure 14 It is shown Figure 13 A magnified image of part of the "D". Figure 15 It is shown Figure 13 The side view of the blade shown. Figure 16 It is along Figure 14 The cross-sectional view taken by line XVI-XVI' in the diagram.

[0122] Reference Figures 12 to 16 The blade 100' includes a main blade 110', a hinge 130', a connecting rod 140', and a secondary blade 120'.

[0123] In order for the opposite side ends of the secondary blade 120' to be coupled to the main blade 110', each of the hinges 130', connecting rods 140' and guide members 115' described below may be provided in pairs.

[0124] The main blade 110' is coupled to a rotating shaft (not shown) and rotates relative to a first rotation center C1. The main blade 110' includes a shaft engagement hole for engaging with the rotating shaft. Figure 15 (113' in the middle). The main blade 110' includes a guide member 115' disposed at its end 111'. The guide member 115' is configured to protrude from the end 111' of the main blade 110'.

[0125] The hinge 130' is rotatably coupled to the guide member 115', such that the hinge 130' can rotate on the coupling portion (first rotary joint portion 131') of the hinge 130' and the guide member 115'.

[0126] The main blade 110' includes a connecting member 110A' rotatably coupled to a rotating shaft and a main body member 110B' coupled to the connecting member 110A' and configured in a plate shape. The connecting member 110A' is coupled to the rotating shaft and is rotatable according to the rotation of the rotating shaft. The main body member 110B' may include a plurality of holes through which air can pass, and a guide member 115' may be disposed on the main body member 110B'.

[0127] Connecting rod 140' can be set relative to, for example Figure 15The second rotation center C2 shown rotates. The connecting rod 140' can be coupled to the housing 20 such that the second rotation center C2 is positioned further back than the first rotation center C1 of the main blade 110'.

[0128] One end of the connecting rod 140' can be coupled to the inner surface of the housing 20, and the other end of the connecting rod 140' can be coupled to the hinge 130'. One end of the connecting rod 140' can be positioned further back than the coupling member 110A' of the main blade 110'. The connecting rod 140' allows the hinge 130' to rotate according to the rotation of the main blade 110', as will be described below.

[0129] The connecting rod 140' can be configured such that the distance between the second rotation center C2 and the second rotary joint portion 132' is greater than the distance between the first rotation center C1 and the first rotary joint portion 131'.

[0130] The hinge 130' includes a first rotary joint portion 131' connected to the guide member 115', a second rotary joint portion 132' connected to the connecting rod 140', and a third rotary joint portion 133' connected to the auxiliary blade 120'.

[0131] like Figure 13 As shown, the first rotary joint portion 131' may include a through hole (not shown) through which the connector 116' of the guide member 115' passes, the second rotary joint portion 132' may include a connector 134' through which the connector 134' passes through a through hole (not shown) provided at the other end of the connecting rod 140', and the third rotary joint portion 133' may include a through hole (not shown) through which the connector 121 of the auxiliary blade 120' passes.

[0132] In this configuration, hinge 130' can rotate on the first rotary joint portion 131', and the position of the first rotary joint portion 131' can be set lower than the position of the second rotary joint portion 132'.

[0133] Because the distance between the second rotation center C2 and the second rotary joint portion 132' is greater than the distance between the first rotation center C1 and the first rotary joint portion 131', the rotation of the main blade 110' can cause the connecting rod 140' to push the periphery of the second rotary joint portion 132' of the hinge 130' along the second direction 52, which causes the hinge 130' to rotate.

[0134] The secondary blade 120' rotates according to the rotation of the hinge 130', such that the secondary blade 120', which is arranged to face the inner surface of the main blade 110', rotates in a direction away from the inner surface of the main blade 110'.

[0135] Reference Figure 16The guide member 115' may include a contact member 115a', which is configured to contact the auxiliary blade 120' to guide the rotation of the auxiliary blade 120'. The contact member 115a' may include a first gear 115aa' configured in a toothed shape.

[0136] The secondary blade 120' includes a contact portion 120a' configured to contact a contact member 115a' of the guide member 115' and a panel portion 120b' extending from the contact portion 120a'. The contact portion 120a' may include a second gear 120aa' configured to mesh with a first gear 115aa'.

[0137] When the secondary blade 120' rotates according to the rotation of the hinge 130' and the contact portion 120a' of the secondary blade 120' thus contacts the contact member 115a' of the guide member 115', the second gear 120aa' meshes with the first gear 115aa'. The secondary blade 120' can rotate at a constant speed along the first gear 115aa' via the second gear 120aa', so that the secondary blade 120' can perform stable rotation without rotating in the opposite direction (i.e., towards the inward orientation of the main blade 110').

[0138] The contact portion 120a' of the guide member 115' and the auxiliary blade 120' can be applied to the reference. Figures 1 to 10 Air conditioner 1 is described, and air conditioner 2 can also be used with reference to Figures 1 to 10 The contact portion 120a between the guide member 115 and the auxiliary blade 120 is described.

[0139] Figure 17 This is a perspective view showing a ceiling-mounted air conditioner according to another embodiment of the present disclosure. Figure 18 It is along Figure 17 The cross-sectional view taken from line III-III' in the middle. Figure 19 It is shown schematically. Figure 17 The diagram shows the connection between the air conditioner's casing and blades. Figure 20 It is shown Figure 17 The image shows a 3D view of the air conditioner blades. Figure 21 It is shown Figure 20 A magnified view of part of the "E". Figure 22 It is shown Figure 20 The side view of the blade shown. Figure 23 It is shown Figure 17 A schematic diagram illustrating the operation of the blades in an air conditioner.

[0140] In the following description, an air conditioner 3 according to another embodiment of the present disclosure will be described. In the following description, components that perform substantially the same functions will be assigned the same reference numerals, and details of components that are the same as or equivalent to those of the air conditioner 1 described above will be omitted.

[0141] Compared to the blade unit 100 of the air conditioner 1 described above, the blade unit 300 of the air conditioner 3 includes main blades 310 and auxiliary blades 320 that are directly connected to each other without hinges 130. Therefore, the blade unit 300 can be provided with a simpler structure, and it is easier to manufacture and / or install the air conditioner 3. In addition, it has the benefit of cost savings.

[0142] Reference Figures 17 to 19 The air conditioner 3 may include a blade unit 300 for guiding the air discharged to the outlet 17.

[0143] The blade unit 300 may include a main blade 310, a secondary blade 320, and a guide link 330.

[0144] The main blade 310 can be rotatably configured to adjust the opening / closing range of the outlet 17. The main blade 310 can rotate relative to the first rotation center 510. The main blade 310 can rotate in one direction R.

[0145] The main blade 310 can rotate within a predetermined angle range. For example, the main blade 310 can rotate between a first position P1 and a second position P2.

[0146] For example, when the main blade 310 is in the first position P1, the air conditioner 3 can be in a closed state or a windless operation state (see...). Figure 23 (See Figure (a)). When the main blade 310 is in the first position P1, the main blade 310 can be configured to close the outlet 17. Additionally, when the main blade 310 is in the second position P2, the air conditioner 3 can be in high-speed operation (see Figure (a)). Figure 23 (See Figure (f)). That is, when the main blade 310 is in the second position P2, the main blade 310 can be configured to open the outlet 17 to the maximum extent. In this case, air can be discharged from the outlet 17 at high speed and travel a long distance. The details will be described below.

[0147] Reference Figures 20 to 22 The main blade 310 may include a main blade body 311, a motor connection part 312, and a secondary blade connection part 313.

[0148] The main blade body 311 can guide air discharged through outlet 17. The main blade body 311 may have a generally plate-shaped form. For example, the main blade body 311 may include a rectangular shape having a pair of long sides 318 and a pair of short sides 319.

[0149] When the main blade 310 is in the first position P1, the side of the main blade body 311 adjacent to the long side 318 of the inlet 15 can be referred to as side 310a of the main blade 310, and the side of the main blade body 311 away from the long side 318 of the inlet 15 can be referred to as the other side 310b of the main blade 310. That is, side 310a of the main blade 310 can be set to be further back than the other side 310b.

[0150] When the main blade 310 is in the first position P1, the surface of the main blade body 311 pointing towards the inside of the housing 20 can be referred to as the first surface 316 of the main blade 310, and the surface of the main blade body 311 pointing towards the outside of the housing 20 can be referred to as the second surface 317 of the main blade 310.

[0151] The motor coupling portion 312 can be configured to receive rotational force from the motor 150. The motor coupling portion 312 can be coupled to the rotational shaft 151 of the motor 150 to receive rotational force from the motor 150. The main blade 310 can be configured to rotate relative to a first rotation center 510 formed by the rotational shaft 151.

[0152] In the accompanying drawings, the motor 150 is shown as being coupled to only one of the motor coupling portions 312 located at opposite ends of the main blade 310, but this disclosure is not limited thereto. The motor 150 may be coupled to both motor coupling portions 312 located at opposite ends of the main blade 310.

[0153] The motor coupling portion 312 may extend upward from the main blade body 311. For example, the motor coupling portion 312 may be provided on one side 310a of the main blade 310. The motor coupling portion 312 may be arranged to be adjacent to one side 310a of the main blade 310 compared to the auxiliary blade coupling portion 313.

[0154] The secondary blade joining portion 313 can be joined to the secondary blade 320. The secondary blade joining portion 313 can extend upward from the main blade body 311. For example, the secondary blade joining portion 313 can be provided on the other side 310b of the main blade 310. The secondary blade joining portion 313 can be arranged to be adjacent to the other side 310b of the main blade 310 compared to the motor joining portion 312.

[0155] The secondary blade engagement portion 313 may include an engagement body 313a and a protrusion 313b extending from the engagement body 313a. For example, the engagement body 313a may be positioned in a cutout portion 325 of the secondary blade 320, which will be described below, and the protrusion 313b may be engaged to a first connector portion 323 of the secondary blade 320, which will be described below.

[0156] The main blade 310 may also include a plurality of first discharge holes (not shown) passing through the main blade body 311. In the state where the main blade 310 closes the outlet 17 (see... Figure 23 As shown in Figure (a), air can be discharged to the outside of the housing 20 through multiple first discharge holes.

[0157] The secondary blade 320 can be configured to operate in conjunction with the rotation of the primary blade 310. For example, the secondary blade 320 can be rotatably coupled to the primary blade 310. The secondary blade 320 can be configured to rotate in the same direction as the primary blade 310. When the secondary blade 320 rotates, the discharge direction of the air discharged to the outlet 17 can be adjusted.

[0158] Reference Figures 20 to 22 The secondary blade 320 may include the secondary blade body 321.

[0159] The secondary blade body 321 can guide air discharged through outlet 17. The secondary blade body 321 may have a generally plate shape. For example, the secondary blade body 321 may include a rectangular shape having a pair of long sides 328 and a pair of short sides 329.

[0160] When the main blade 310 is in the first position P1, the side of the secondary blade body 321 away from the inlet 15 along its long side 328 can be referred to as side 320a of the secondary blade 320, and the side of the secondary blade body 321 adjacent to the inlet 15 along its long side 328 can be referred to as the other side 320b of the secondary blade 320. For example, when the main blade 310 is in the first position P1, side 320a of the secondary blade 320 can be positioned further forward than the other side 320b. Conversely, when the main blade 310 is in the second position P2, side 320a of the secondary blade 320 can be positioned further backward than the other side 320b.

[0161] When the main blade 310 is in the first position P1, the surface of the secondary blade body 321 pointing towards the main blade 310 can be referred to as the first surface 326 of the secondary blade 320, and the surface of the secondary blade body 321 opposite to the first surface 326 can be referred to as the second surface 327.

[0162] The secondary blade 320 may be configured to be coupled to the main blade 310. The secondary blade 320 may be configured to be coupled to the guide link 330. The secondary blade 320 may include a connecting portion 322 coupled to the main blade 310 and the guide link 330.

[0163] The connecting portion 322 may include a first connector portion 323 rotatably coupled to the main blade 310. For example, the first connector portion 323 may include a coupling hole 3230 that engages with a protrusion 313b of the auxiliary blade coupling portion 313. The connecting portion 322 may include a second connector portion 324 rotatably coupled to the guide link 330. For example, the second connector portion 324 may include a coupling protrusion 3240 that engages with a second hole 3320 of a second end 332 of the guide link 330. However, the coupling method of the connecting portion 322 is not limited to the above examples, and the auxiliary blade 320 may be rotatably coupled to the main blade 310 and the guide link 330 in various ways.

[0164] The connecting portion 322 may also include a cut portion 325, which is a predetermined portion cut from one side 320a of the secondary blade 320 toward the other side 320b. The connecting body 313a of the main blade 310 may be positioned in the cut portion 325.

[0165] The connecting part 322 can be disposed on one side 320a of the auxiliary blade 320.

[0166] The secondary blade 320 can be configured to rotate in relation to the rotation of the main blade 310.

[0167] The secondary blade 320 can be configured to unfold according to the rotation of the main blade 310. For example, when the main blade 310 is in the first position P1, the entire secondary blade 320 is configured to overlap with the main blade 310, and when the main blade 310 is positioned in the second position P2, a portion of the secondary blade 320 is configured to overlap with the main blade 310.

[0168] The blade unit 300 includes secondary blades 320, which increases the total area for guiding air. For example, air discharged through outlet 17 can be guided not only by the main blade 310 but also by the secondary blades 320, thus reaching a longer distance. In other words, the secondary blades 320 increase the reachable distance of air discharged through the outlet.

[0169] When the secondary blade 320 rotates, one side 320a of the secondary blade 320 can become closer to the first rotation center 510 of the main blade 310, and the other side 320b of the secondary blade 320 can become farther away from the first rotation center 510 of the main blade 310.

[0170] The secondary blade 320 may also include a plurality of second discharge holes (not shown) passing through the secondary blade body 321. With the main blade 310 closing the outlet 17 (see...) Figure 23 As shown in Figure (a), air can be discharged to the outside of the housing 20 through multiple second discharge holes of the auxiliary blade 320 and multiple first discharge holes of the main blade 310. Therefore, the air conditioner 3 can achieve windless airflow.

[0171] The guide link 330 can be configured to guide the movement of the secondary blade 320. For example, the guide link 330 can be connected to one side 320a of the secondary blade 320 to guide the movement of the secondary blade 320. The guide link 330 can be configured to rotate relative to the second rotation center 520 in association with the rotation of the main blade 310.

[0172] The guide link 330 may include a link body 330a, a first end 331 disposed at one end of the link body 330a, and a second end 332 disposed at the other end of the link body 330a.

[0173] The first end 331 of the guide rod 330 may be configured to form a second rotation center 520. The first end 331 may be configured to be rotatably coupled to the interior of the housing 20. For example, refer to Figure 19 The first end portion 331 may include a first hole 3310 that engages with a connecting rod engagement portion 21 protruding from the inner surface 20a of the housing 20 (see [reference]). Figure 21 ).

[0174] The second end 332 of the guide link 330 may be configured to engage with the auxiliary blade 320. The second end 332 may be configured to engage with the second connector portion 324 of the auxiliary blade 320. For example, the second end 332 may include a second hole 3320 of an engagement protrusion 3240 engaging with the second connector portion 324.

[0175] The distance between the second rotation center 520 and the second connector portion 324 can be set to be shorter than the distance between the first rotation center 510 and the first connector portion 323. Therefore, the guide rod 330 can guide the movement of the auxiliary blade 320, so that the auxiliary blade 320 rotates in the same direction as the main blade 310.

[0176] In the following text, reference will be made to Figure 23 Describe the operation process of blade unit 300.

[0177] Reference Figure 23 As shown in Figure (a), the main blade 310 may be positioned at a first position P1. In this case, the air conditioner 3 is in a non-operating state (off state), or in a windless driven state in which air is discharged through a plurality of first discharge holes (not shown) of the main blade 310 and a plurality of second discharge holes (not shown) of the auxiliary blade 320. In this case, the first connector portion 323 of the auxiliary blade 320 may be positioned higher than the second connector portion 324.

[0178] Reference Figure 23The main blade 310 receives rotational force from the motor 150 and rotates in one direction R. As the main blade 310 rotates, the auxiliary blade 320 also rotates in the same direction R. The guide link 330 attached to the auxiliary blade 320 also rotates in the same direction R in conjunction with the rotation of the main blade 110. In this case, the guide link 330 guides the rotation of the auxiliary blade 320, causing the second joint portion 324 of the auxiliary blade 320 to move closer to the first rotation center 510. Therefore, the second joint portion 324 of the auxiliary blade 320 can rotate and move in a downward direction, and the first joint portion 323 can rotate and move in an upward direction. As the connecting portion 322 provided on one side 320a of the auxiliary blade 320 rotates, the other side 320b of the auxiliary blade 320 can be configured to extend outward toward the housing 20. As a result, as the main blade 310 and the auxiliary blade 320 rotate, the angle between the main blade 310 and the auxiliary blade 320 can increase. Here, the angle between the main blade 310 and the secondary blade 320 can be the angle between the first surface 316 of the main blade 310 and the first surface 326 of the secondary blade 320.

[0179] The auxiliary blades 320 can control the direction of air discharge through outlet 17. Therefore, the air conditioner 3 can control the airflow direction at various angles.

[0180] Reference Figure 23 As shown in Figure (e), the secondary blades 320 guide the airflow, causing the air to be discharged in a generally horizontal direction. For example, because cold air has the characteristic of falling downwards, it may increase discomfort when occupants are directly exposed to the air. During the cooling operation of the air conditioner, such as... Figure 12 The blade unit 300 is arranged as shown in Figure (e) to transport air a greater distance in the horizontal direction. However, this disclosure is not limited to this, and even during the heating operation of the air conditioner 3, it can be used as follows: Figure 23 The blade unit 300 is set as shown in Figure (e).

[0181] Reference Figure 23 As shown in Figure (f), the secondary blades 320 can guide airflow, causing air to be discharged in a generally vertically downward direction. For example, because warm air has the characteristic of rising, the perceived temperature in the lower space where the occupant is located may be lower. During the heating operation of the air conditioner 3, as shown in Figure (f), the secondary blades 320 can guide airflow, causing air to be discharged in a generally vertically downward direction. Figure 23 The blade unit 300 is arranged as shown in Figure (f) to transport air a greater distance in a downward direction. However, this disclosure is not limited to this, and it can also be used even during the cooling operation of an air conditioner. Figure 23 The blade unit 300 is provided as shown in Figure (f) for rapid cooling.

[0182] In addition, refer to Figure 23In Figure (f), the main blade 310 can be positioned at the second position P2. In this case, the air conditioner 3 can operate at high speed. As described above, the blade unit 300 can transmit the air discharged through the outlet 17 a greater distance in a downward direction, thereby achieving rapid indoor heating or rapid indoor cooling. In this case, the second connector portion 324 of the auxiliary blade 320 can be positioned higher than the first connector portion 323. In addition, the first surface 326 of the auxiliary blade 320 can be configured to guide the air discharged through the outlet 17, and a portion of the second surface 327 of the auxiliary blade 320 can be configured to point towards the first surface 316 of the main blade 310.

[0183] When the main blade 310 is in the second position P2, the opening of the outlet 17 can be maximized. For example, the angle between the main blade 310 and the secondary blade 320 can be set in the range of about 120° to 190°. However, this disclosure is not limited to this, and the angle between the main blade 310 and the secondary blade 320 can be about 190° or greater.

[0184] As described above, the blade unit 300 can guide the air discharged to the outlet 17 in various ways.

[0185] The blade unit 300 can be driven in a first mode to discharge air through a plurality of first discharge holes of the main blade 310 and a plurality of second discharge holes of the auxiliary blade 320 (see...). Figure 23 (See Figure (a)). When the blade unit 300 is driven in the first mode, the air conditioner 3 can achieve windless airflow.

[0186] The blade unit 300 can be driven in a second mode to guide air discharged to outlet 17 in a vertically downward direction (see...). Figure 23 (See Figure (f)). For example, during the heating operation of the air conditioner 3, the blade unit 300 can be driven in a second mode. In this case, the blade unit 300 allows the warm air discharged through the outlet 17 to easily reach the lower space of the room, thereby improving the heating effect. However, this disclosure is not limited to this, and the second mode driving of the blade unit 300 can also be performed even during the cooling operation of the air conditioner 3.

[0187] Blade unit 300 can be driven in a third mode for guiding air discharged to outlet 17 in a horizontal direction (see...). Figure 23 (See Figure (e)). For example, during the cooling operation of the air conditioner 3, the blade unit 300 can be driven in a third mode. In this case, the blade unit 300 can guide the cold air discharged through the outlet 17 in a horizontal direction so that the cold air does not directly contact the occupants. This improves the comfort of the occupants. However, this disclosure is not limited to this, and the third mode driving of the blade unit 300 can also be performed even during the heating operation of the air conditioner 3.

[0188] Figure 24 This is a perspective view showing a ceiling-mounted air conditioner according to yet another embodiment of the present disclosure. Figure 25 It is along Figure 24 A cross-sectional view taken from line IV-IV' in the diagram. Figure 26 It is shown Figure 24 The image shows a 3D view of the air conditioner blades. Figure 27 It is shown Figure 26 An enlarged view of part of the "F" shown. Figure 28 It is shown Figure 26 The side view of the blade shown. Figure 29 It is shown Figure 24 A schematic diagram illustrating the operation of the blades in an air conditioner.

[0189] In the following description, an air conditioner 4 according to another embodiment of the present disclosure will be described. In the following description, components that perform substantially the same functions will be assigned the same reference numerals, and details of components that are the same as or equivalent to those of the air conditioner 3 described above will be omitted.

[0190] Compared to the blade unit 300 of air conditioner 3 described above, the blade unit 400 of air conditioner 4 may further include a first drive link 440 and a second drive link 450. Additionally, the first drive link 440 may be connected to a motor 150 to transmit rotational force to the main blade 410. That is, the main blade 410 may not directly receive rotational force from the motor 150. Apart from this structure, air conditioner 4 is essentially the same as air conditioner 3 described above, and its details can be omitted.

[0191] Reference Figure 25 The blade unit 400 may include a main blade 410, an auxiliary blade 420, and a guide link 430. Furthermore, the blade unit 400 may also include a first drive link 440 and a second drive link 450.

[0192] The main blade 410 can be rotatably configured to adjust the opening / closing range of the outlet 17. The main blade 410 can rotate relative to the first rotation center 610. The main blade 410 can rotate in one direction R.

[0193] The main blade 410 can rotate within a predetermined angle range. For example, the main blade 410 can rotate between a first position P1 and a second position P2. When the main blade 410 is in the first position P1, the air conditioner 4 can be in a closed state or a windless operation state (see...). Figure 29 (See Figure (a)). Additionally, when the main blade 410 is in the second position P2, the air conditioner 4 can operate at high speed (see Figure (a)). Figure 29(See Figure (f)). Depending on the position of the main blade 410, the air conditioner 4 can control the airflow at various angles. The operation and / or running state of the air conditioner 4 is basically the same as that of the air conditioner 3 described above, and its details will be omitted.

[0194] Reference Figures 26 to 28 The main blade 410 may include a main blade body 411, a first connecting portion 412, a second connecting portion 413, and a third connecting portion 414.

[0195] The main blade body 411 can guide air discharged through outlet 17. The main blade body 411 may have a generally plate-like shape. For example, the main blade body 411 may include a rectangular shape having a pair of long sides 418 and a pair of short sides 419.

[0196] When the main blade 410 is in the first position P1, the side of the main blade body 411 adjacent to the long side 418 of the inlet 15 can be referred to as side 410a of the main blade 410, and the side of the main blade body 411 away from the long side 418 of the inlet 15 can be referred to as the other side 410b of the main blade 410. That is, side 410a of the main blade 410 can be set to be further back than the other side 410b.

[0197] When the main blade 410 is in the first position P1, the surface of the main blade body 411 pointing towards the inside of the housing 20 can be referred to as the first surface 416 of the main blade 410, and the surface of the main blade body 411 pointing towards the outside of the housing 20 can be referred to as the second surface 417 of the main blade 410.

[0198] The first engagement portion 412 of the main blade 410 may be configured to rotate relative to the first rotation center 610. The first engagement portion 412 of the main blade 410 may be configured to be rotatably engaged with the inner surface 20a of the housing 20. The main blade 410 may be supplied with rotational force via the first drive link 440 and the second drive link 450, and rotate relative to the first rotation center 610.

[0199] The first connecting portion 412 may be configured to extend upward from the main blade body 411. The first connecting portion 412 may be configured to protrude from the main blade body 411 toward the inner surface 20a of the housing 20. For example, the first connecting portion 412 may be provided on one side 410a of the main blade 410. The first connecting portion 412 may be arranged to be adjacent to one side 410a of the main blade 410 compared to the second connecting portion 413.

[0200] The second connecting portion 413 can be connected to the auxiliary blade 420. The second connecting portion 413 has a structure that is substantially the same as the auxiliary blade connecting portion 313 of the air conditioner 3 described above, and its details can be omitted.

[0201] The second joining portion 413 may extend upward from the main blade body 411. For example, the second joining portion 413 may be disposed on the other side 410b of the main blade 410. The second joining portion 413 may be arranged to be adjacent to the other side 410b of the main blade body 411 compared to the first joining portion 412.

[0202] The second joining portion 413 may include a joining body 413a positioned in a cutout portion 425 of the sub-blade 420 and a protrusion 413b extending from the joining body 413a to join to the first joint portion 423 of the sub-blade 420.

[0203] The third connecting portion 414 can be connected to the second drive link 450. The third connecting portion 414 can be rotatably connected to the second end 452 of the second drive link 450. The third connecting portion 414 can be configured to receive the rotational force of the motor 150 via the first drive link 440 and the second drive link 450. Therefore, the main blade 410 can be configured to rotate relative to the first rotation center 610. For example, the third connecting portion 414 can be arranged between the first connecting portion 412 and the second connecting portion 413.

[0204] The secondary blade 420 can be configured to operate in conjunction with the rotation of the primary blade 410. For example, the secondary blade 420 can be rotatably coupled to the primary blade 410. The secondary blade 420 can be configured to rotate in the same direction as the primary blade 410. As the secondary blade 420 rotates, the discharge direction of the air discharged to the outlet 17 can be adjusted. Because the rotation operation of the secondary blade 420 is substantially the same as the rotation operation of the secondary blade 320 described above, its details will be omitted.

[0205] Reference Figures 26 to 28 The secondary blade 420 may include the secondary blade body 421.

[0206] The secondary blade body 421 can guide air discharged through outlet 17. The secondary blade body 421 may have a generally plate shape. For example, the secondary blade body 421 may include a rectangular shape having a pair of long sides 428 and a pair of short sides 429.

[0207] When the main blade 410 is in the first position P1, the side of the secondary blade body 421 furthest from the inlet 15 along its long side 428 can be referred to as side 420a of the secondary blade 420, and the side of the secondary blade body 421 adjacent to the inlet 15 along its long side 428 can be referred to as the other side 420b of the secondary blade 420. For example, when the main blade 410 is in the first position P1, side 420a of the secondary blade 420 can be positioned further forward than the other side 420b. Conversely, when the main blade 410 is in the second position P2, side 420a of the secondary blade 420 can be positioned further backward than the other side 420b.

[0208] When the main blade 410 is in the first position P1, the surface of the secondary blade body 421 pointing towards the main blade 410 can be called the first surface 426 of the secondary blade 420, and the surface of the secondary blade body 421 opposite to the first surface 426 can be called the second surface 427 of the secondary blade 420.

[0209] The secondary blade 420 may be configured to be coupled to the main blade 410 and the guide link 430. The secondary blade 420 may include a connecting portion 422 coupled to the main blade 410 and the guide link 430.

[0210] The connecting portion 422 may include a first connector portion 423 rotatably coupled to the main blade 410. For example, the first connector portion 423 may include a coupling hole 4230 that engages with a protrusion 413b of the second connecting portion 413. The connecting portion 422 may include a second connector portion 424 rotatably coupled to the guide link 430. For example, the second connector portion 424 may include a coupling protrusion 4240 that engages with a second hole 4320 of the second end 432 of the guide link 430. However, the method of coupling the connecting portion 422 is not limited to the above examples, and the auxiliary blade 420 may be rotatably coupled to the main blade 410 and the guide link 430 in various ways.

[0211] The connecting portion 422 may also include a cut portion 425, which is a predetermined portion cut from one side 420a of the secondary blade 420 toward the other side 420b. The connecting body 413a of the second connecting portion 413 may be positioned in the cut portion 425.

[0212] The connecting part 422 can be provided on one side 420a of the auxiliary blade 420.

[0213] The main blade 410 may further include a plurality of first discharge holes (not shown) passing through the main blade body 411. The secondary blade 420 may further include a plurality of second discharge holes (not shown) passing through the secondary blade body 421. The blade unit 400 discharges air through the plurality of first discharge holes and the plurality of second discharge holes, thereby achieving a windless airflow.

[0214] The guide link 430 can be configured to guide the movement of the auxiliary blade 420. The guide link 430 may include a link body 430a, a first end 431 disposed at one end of the link body 430a, and a second end 432 disposed at the other end of the link body 430a.

[0215] The first end 431 of the guide rod 430 may be configured to form a second rotation center 620. The first end 431 may be rotatably coupled to the inner surface 20a of the housing 20; for example, the first end 431 may include a first hole 4310 that engages with the inner surface 20a of the housing 20. The second end 432 of the guide rod 430 may be configured to engage with a second connector portion 424 of the auxiliary blade 420.

[0216] The first drive link 440 may include a first body 440a, a first end 441 disposed at one end of the first body 440a, and a second end 442 disposed at the other end of the first body 440a.

[0217] The first end 441 of the first drive link 440 can be connected to the motor 150 to receive rotational force. The first end 441 can form the rotation center 630 of the motor. Additionally, the second end 442 of the first drive link 440 can be connected to the first end 451 of the second drive link 450. Therefore, the first drive link 440 can transmit the rotational force of the motor 150 to the second drive link 450.

[0218] The second drive link 450 may include a second body 450a, a first end 451 disposed at one end of the second body 450a, and a second end 452 disposed at the other end of the second body 450a.

[0219] The first end 451 of the second drive link 450 can be connected to the second end 442 of the first drive link 440. The second end 452 of the second drive link 450 can be connected to the main blade 410. The second end 452 can be connected to the third engagement portion 414 of the main blade 410. The second drive link 450 can transmit the rotational force received from the first drive link 440 to the main blade 410.

[0220] According to this disclosure, the main blade 410 can receive rotational force from the motor 150 via the first drive link 440 and the second drive link 450, instead of directly receiving rotational force from the motor 150. That is, the main blade 410 may not be directly driven by the motor 150, but may be driven by the first drive link 440 and the second drive link 450 connected to the motor 150.

[0221] Therefore, unlike the embodiment described above (blade unit 300), the first rotation center 610 and the motor rotation center 630 can be set to be different from each other. This significantly reduces the area occupied by the main blade 410 at the outlet 17 for engagement with the motor 150. Furthermore, because the main blade 410 is not directly driven by the motor 150, but rather by the first drive link 440 and the second drive link 450, it can perform rotation more freely compared to the embodiment described above.

[0222] For example, the area on the outlet 17 between the first surface 416 of the main blade 410 and the housing 20 due to the rotation of the main blade 410 can be defined as the front outlet 17a, and the area on the outlet 17 between the second surface 417 of the main blade 410 and the housing 20 can be defined as the rear outlet 17b. In this case, the main flow of air discharged through the outlet 17 can be formed in the front outlet 17a. Because the main blade 410 is not directly connected to the motor 150, it can rotate more freely, and the area of ​​the front outlet 17a can be maximized. Therefore, the amount of air discharged through the front outlet 17a can be increased, and the efficiency of the air conditioner 4 can be improved.

[0223] In the following text, reference will be made to Figure 29 Describe the operation process of blade unit 400.

[0224] Reference Figure 29 The first drive link 440 receives rotational force from the motor 150 and rotates in one direction R. A second drive link 450 connected to the first drive link 440 transmits the rotational force to the main blade 410. For example, the second end 452 of the second drive link 450 may be configured to push the third engagement portion 414 of the main blade 410 with a predetermined force. The main blade 410 receives rotational force from the second drive link 450 and rotates in one direction R. Depending on the rotation of the main blade 410, the auxiliary blade 420 and the guide link 430 can rotate in association with the rotation of the main blade 410.

[0225] Following the above, the operation of the main blade 410, the secondary blade 420, and the guide rod 430 is basically the same as that of the main blade 310, the secondary blade 320, and the guide rod 330.

[0226] In other words, the guide rod 430 guides the movement of the secondary blade 420. The second joint portion 424 of the secondary blade 420 rotates and moves downward, while the first joint portion 423 rotates and moves upward. As a result, the rotation of the connecting portion 422 on one side 420a of the secondary blade 420 allows the other side 420b of the secondary blade 420 to extend outward toward the housing 20. As the main blade 410 and the secondary blade 420 rotate, the angle between the main blade 410 and the secondary blade 420 can increase. Therefore, the blade unit 400 can guide the air discharged through the outlet 17 to a longer distance.

[0227] On the other hand, similar to the blade unit 300 described above, the blade unit 400 can also be driven in a first mode, a second mode, and a third mode. Therefore, the blade unit 400 can guide airflow in various ways.

[0228] The scope of this disclosure is not limited to the embodiments described above. Those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of this disclosure as defined by the appended claims and their equivalents.

Claims

1. A ceiling-mounted air conditioner, comprising: The casing has an inlet and an outlet; A heat exchanger is disposed inside the housing to exchange heat with air drawn in through the inlet; A fan is configured to move air that has exchanged heat with the heat exchanger so that it is discharged through the outlet; as well as A blade assembly configured to direct air to the outlet, the blade assembly comprising: The main blade is rotatable relative to a first rotation center to open and close the outlet. The main blade includes a secondary blade assembly portion that extends from the main blade on the side of the main blade opposite to the first rotation center. A secondary blade, rotatably coupled to the secondary blade coupling portion at the first connector portion, is rotatable about the first connector portion such that, during the rotation of the main blade to open the outlet, a first side of the secondary blade moves closer to the first rotation center, and a second side of the secondary blade opposite to the first side moves further away from the first rotation center, thereby increasing the discharge distance of the air flowing out of the outlet; and A guide link is configured to rotate relative to a second rotation center in relation to the rotation of the main blade, and engages at a second joint portion with the first side of the secondary blade, the second joint portion being rotatable about the first joint portion to guide the movement of the secondary blade.

2. The ceiling-mounted air conditioner according to claim 1, wherein, The auxiliary blades include: The first connector portion is rotatably capable of engaging with the secondary blade engagement portion; and The second connector portion is rotatably coupled to the guide link.

3. The ceiling-mounted air conditioner according to claim 2, wherein, The guide link includes: The first end is configured to form the second rotation center; and The second end is rotatably capable of engaging with the second connector portion of the auxiliary blade.

4. The ceiling-mounted air conditioner according to claim 1, wherein, The auxiliary blades are configured to adjust the discharge direction of the air discharged through the outlet.

5. The ceiling-mounted air conditioner according to claim 2, wherein, The main blade is rotatable between a first position and a second position, and When the main blade is in the first position, the first joint portion of the secondary blade is positioned above the second joint portion, and When the main blade is in the second position, the first joint portion of the auxiliary blade is positioned below the second joint portion.

6. The ceiling-mounted air conditioner according to claim 5, wherein, During the heating operation, the main blade is positioned in the second position.

7. The ceiling-mounted air conditioner according to claim 5, wherein, The secondary blade also includes a first surface and a second surface. When the main blade is in the first position, the first surface faces the main blade, and the second surface is opposite to the first surface.

8. The ceiling-mounted air conditioner according to claim 7, wherein, When the main blade is in the second position, the first surface of the secondary blade is configured to guide the air discharged to the outlet, and A portion of the second surface of the secondary blade is configured to face the main blade.

9. The ceiling-mounted air conditioner according to claim 1, wherein, As the main blade and the secondary blade rotate, the angle between the main blade and the secondary blade increases.

10. The ceiling-mounted air conditioner according to claim 2, wherein, The distance between the second rotation center and the second connector portion is shorter than the distance between the first rotation center and the first connector portion.

11. The ceiling-mounted air conditioner according to claim 1, wherein, The blade assembly also includes a motor configured to provide rotational force, and The main blade can be coupled to the rotating shaft of the motor.

12. The ceiling-mounted air conditioner according to claim 1, wherein, The blade assembly includes: An electric motor is constructed to provide rotational force; A first drive link is capable of engaging with the rotating shaft of the motor; and The second drive link has one end that can be engaged with the first drive link and the other end that can be engaged with the main blade. The second drive link is configured to guide the movement of the main blade such that the main blade rotates relative to the first rotation center.

13. The ceiling-mounted air conditioner according to claim 1, wherein, The main blade includes a main blade body and a plurality of first discharge holes formed through the main blade body; The secondary blade includes a secondary blade body and a plurality of second discharge holes passing through the secondary blade body; and The blade assembly is configured to allow air to move through the plurality of first discharge holes and the plurality of second discharge holes.

14. The ceiling-mounted air conditioner according to claim 1, wherein, The secondary blade rotates in the same direction as the main blade.

15. The ceiling-mounted air conditioner according to claim 1, wherein, The blade assembly is capable of operating in a first mode, a second mode, and a third mode. The first mode is used to discharge air through a plurality of first discharge holes formed in the main blade and a plurality of second discharge holes formed in the auxiliary blade. The second mode is used to guide the air discharged to the outlet in a downward direction. The third mode is used to guide the air discharged to the outlet in a horizontal direction.

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