Air conditioner indoor hanging machine with double fans and air conditioner

Abstract

The application provides an air conditioner indoor hanging machine and an air conditioner. The air conditioner indoor hanging machine comprises a shell, a first cross-flow fan and a second cross-flow fan. The shell is provided with an air inlet and an air outlet, and a first air supply air duct and a second air supply air duct are formed in the shell and are separated from each other and communicate with the air inlet and the air outlet. The first air supply air duct is located at the rear side of the second air supply air duct. The first cross-flow fan is arranged in the first air supply air duct and is used for forming an air flow which enters the shell from the air inlet, flows through the first air supply air duct and is blown out from the air outlet. The second cross-flow fan is arranged in the second air supply air duct and is used for forming an air flow which enters the shell from the air inlet, flows through the second air supply air duct and is blown out from the air outlet. The diameter ratio of the second cross-flow fan to the first cross-flow fan is less than or equal to 1:2. The air conditioner indoor hanging machine provided by the application can provide better air supply adjustment effect.

Description

Technical Field

[0001] This invention relates to the field of home appliances, and in particular to an indoor unit of an air conditioner with dual fans and an air conditioner. Background Technology

[0002] With the development of science and technology and the continuous improvement of living standards, air conditioners have gradually become common household appliances and a standard feature of modern home life.

[0003] However, most existing air conditioner indoor units only have one air supply fan, so the air supply regulation effect is relatively average and cannot meet the needs of some users. Summary of the Invention

[0004] One objective of this invention is to provide an indoor unit of an air conditioner with better air supply regulation.

[0005] Another objective of this invention is to provide an air conditioner that solves the above-mentioned problems.

[0006] According to one aspect of the present invention, an indoor unit of an air conditioner is provided, the indoor unit of the air conditioner comprising: a housing, a first cross-flow fan and a second cross-flow fan.

[0007] The housing has an air inlet and an air outlet; and the housing has a first air supply duct and a second air supply duct that are separated at the front and rear and connected to the air inlet and the air outlet respectively; the first air supply duct is located behind the second air supply duct.

[0008] The first cross-flow fan is installed inside the first air supply duct to promote the formation of an airflow that enters the housing from the air inlet, flows through the first air supply duct, and is blown out from the air outlet.

[0009] The second cross-flow fan is installed inside the second air supply duct to promote the formation of an airflow that enters the housing from the air inlet, flows through the second air supply duct, and is blown out from the air outlet.

[0010] The diameter ratio of the second cross-flow fan to the first cross-flow fan is less than or equal to 1:2.

[0011] Optionally, the indoor unit of the air conditioner may also include: an air duct separator.

[0012] The air duct separator is disposed inside the housing and configured to separate a first air supply duct and a second air supply duct inside the housing.

[0013] The air duct partitions include: the first air duct wall and the fourth air duct wall.

[0014] The first air duct wall serves as the front air duct wall of the first air supply duct; the fourth air duct wall serves as the rear air duct wall of the second air supply duct. Furthermore, the end of the first air duct wall in the air outlet direction of the first air supply duct and the end of the fourth air duct wall in the air outlet direction of the second air supply duct are connected, thereby causing the airflow from the first air supply duct and the second air supply duct to converge in front of the junction of the first air duct wall and the fourth air duct wall.

[0015] Optionally, the indoor unit of the air conditioner may also include a heat exchanger.

[0016] The heat exchanger is installed inside the shell; and part of the heat exchanger is located between the air inlet and the first cross-flow fan, and part of the heat exchanger is located between the air inlet and the second cross-flow fan, so that part of the air entering from the air inlet flows through the heat exchanger and enters the first air supply duct, and part of the air flows through the heat exchanger and enters the second air supply duct.

[0017] Optionally, an air inlet is provided on the top surface of the housing.

[0018] The heat exchanger includes a first heat exchange section, a second heat exchange section, and a third heat exchange section.

[0019] The first heat exchange section is inclined forward and upward from the rear side inside the shell; the second heat exchange section is inclined forward and downward from the front end of the first heat exchange section; and the projections of the first heat exchange section and the second heat exchange section on the horizontal plane cover the projection of the first cross-flow fan on the horizontal plane.

[0020] The third heat exchange section is inclined forward and downward from the front end of the second heat exchange section, and the front end is close to the inner front side of the shell; and the projection of the third heat exchange section on the horizontal plane covers the projection of the second cross-flow fan on the horizontal plane.

[0021] Furthermore, the first heat exchange section is connected in series with the second heat exchange section, and the third heat exchange section is connected in parallel with the first heat exchange section and the second heat exchange section and is controlled separately; or the first heat exchange section, the second heat exchange section and the third heat exchange section are connected in parallel and are controlled separately.

[0022] Optionally, the bottom height of the second cross-flow fan is lower than that of the first cross-flow fan; and the angle between the surface of the third heat exchange section and the horizontal plane is smaller than the angle between the surface of the second heat exchange section and the horizontal plane.

[0023] Optionally, the duct partition may also include a partition plate.

[0024] One end of the partition plate is connected to the wall of the first air duct and / or the wall of the fourth air duct, and the other end extends to the connection between the second heat exchange section and the third heat exchange section, so that the air flowing through the first heat exchange section and the second heat exchange section enters the first air supply duct, and the air flowing through the third heat exchange section enters the second air supply duct.

[0025] Optionally, the indoor unit of the air conditioner may also include: a second air duct wall and a third air duct wall.

[0026] The second air duct wall serves as the rear air duct wall of the first air supply duct; the end of the second air duct wall in the air outlet direction connects with the front end of the bottom surface of the housing, serving as the lower side of the air outlet. The third air duct wall serves as the front air duct wall of the second air supply duct; the end of the third air duct wall in the air outlet direction connects with the lower end of the front side surface of the housing, serving as the upper side of the air outlet.

[0027] Furthermore, the surface of the first duct wall is bent to form a volute structure that cooperates with the first cross-flow fan; the surface of the third duct wall is bent to form a volute structure that cooperates with the second cross-flow fan.

[0028] Optionally, the angle between the first duct wall and the fourth duct wall at their junction is greater than or equal to 10° and less than or equal to 25°.

[0029] Optionally, the junction of the first and fourth air duct walls is spaced apart from the air outlet.

[0030] Furthermore, the air duct partition also includes: air duct extension plate.

[0031] The air duct extension plate is rotatably disposed at the junction of the first air duct wall and the fourth air duct wall, and is located inside the air outlet, for changing the confluence position of the airflow from the first air supply duct and the second air supply duct.

[0032] Optionally, the ratio of the distance between the lower side of the air outlet and the upper side of the air outlet in the front-rear direction to the distance between the upper side of the air outlet and the rear side of the housing is greater than or equal to 1:3.

[0033] Optionally, the indoor unit of the air conditioner may also include: a first air guide plate and a second air guide plate.

[0034] The first and second air guide plates are respectively installed horizontally at the air outlet to close the air outlet or adjust the airflow direction at the air outlet.

[0035] When the first air guide plate and the second air guide plate are in the closed air outlet position, the first air guide plate extends forward from the lower side of the air outlet, and the angle between the surface of the first air guide plate and the horizontal plane is less than or equal to 10°.

[0036] The second air guide plate extends upward from the front end of the first air guide plate to the upper side of the air outlet.

[0037] Optionally, when the first air guide plate and the second air guide plate are in the closed air outlet position, the rotation axis of the first air guide plate is located near its own front upper side; and the rotation axis of the second air guide plate is located near the rear upper side of the first air guide plate.

[0038] Optionally, the indoor unit of the air conditioner may also include a third air deflector.

[0039] The third air guide plate is set horizontally inside the air outlet; and the distance from the rotation axis to the front and rear ends of the third air guide plate is greater than the distance from its rotation axis to the air outlet.

[0040] According to another aspect of the present invention, an air conditioner is provided.

[0041] Air conditioners include any of the above-mentioned indoor wall-mounted air conditioner units.

[0042] The indoor unit of the air conditioner of the present invention includes a housing, a first cross-flow fan and a second cross-flow fan.

[0043] The housing has an air inlet and an air outlet; and the housing has a first air supply duct and a second air supply duct that are separated at the front and rear and connected to the air inlet and the air outlet respectively; the first air supply duct is located behind the second air supply duct.

[0044] A first cross-flow fan is installed inside a first air supply duct to facilitate airflow that enters the housing from the air inlet, flows through the first air supply duct, and exits from the air outlet. A second cross-flow fan is installed inside a second air supply duct to facilitate airflow that enters the housing from the air inlet, flows through the second air supply duct, and exits from the air outlet. The diameter ratio of the second cross-flow fan to the first cross-flow fan is less than or equal to 1:2.

[0045] Compared to traditional air conditioner indoor units, the indoor unit of this invention improves the air duct layout inside the casing, forming a first and second air supply duct separated front and rear. Furthermore, a first cross-flow fan and a second cross-flow fan are simultaneously installed within the casing, with the first cross-flow fan serving as the main fan, and the diameter of the second cross-flow fan being significantly smaller than that of the first. By controlling the rotation of the first and second cross-flow fans, the indoor unit of this invention can adjust the airflow volume and velocity of the first and second air supply ducts, which are positioned relative to the air outlets, thereby providing a better air supply regulation effect.

[0046] Furthermore, the indoor unit of the air conditioner of the present invention also improves the shape and extension direction of the air duct wall to control the flow direction of the airflow from the first air supply duct and the second air supply duct and improve the mixing effect of the airflow.

[0047] Furthermore, the indoor unit of the air conditioner of the present invention further divides the heat exchanger into a first heat exchange section, a second heat exchange section and a third heat exchange section to control the temperature of the airflow blown out from the first air supply duct and the second air supply duct.

[0048] Furthermore, the indoor unit of the air conditioner of the present invention is also provided with a duct extension plate, which is used to change the intersection position of the airflow of the first air supply duct and the second air supply duct to further adjust the air supply effect of the indoor unit of the air conditioner at the air outlet.

[0049] Furthermore, the indoor unit of the air conditioner of the present invention is also provided with a first air guide plate, a second air guide plate and a third air guide plate to further adjust the air supply effect of the indoor unit at the air outlet.

[0050] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of some specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0051] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0052] Figure 1 This is a cross-sectional schematic diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0053] Figure 2 This is a cross-sectional schematic diagram of an indoor unit of an air conditioner according to another embodiment of the present invention;

[0054] Figure 3 yes Figure 2 Another schematic diagram of the indoor unit of the air conditioner shown;

[0055] Figure 4 yes Figure 2 Another schematic diagram of an indoor unit of an air conditioner is shown;

[0056] Figure 5 yes Figure 2 A schematic diagram of the first air guide plate of the indoor unit of the air conditioner;

[0057] Figure 6 This is a schematic diagram of an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0058] In the description of this embodiment, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0059] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," etc., may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature.

[0060] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0061] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "coupling," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] Furthermore, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0063] That is, in the description of this embodiment, "above," "over," and "on top" of the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "under" of the first feature and the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, devices, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, devices, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Unless otherwise specified, all terms (including technical and scientific terms) used in the description of the embodiments of the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0066] Figure 1 This is a cross-sectional schematic diagram of an indoor unit 20 of an air conditioner according to an embodiment of the present invention.

[0067] refer to Figure 1 As shown, this embodiment provides an indoor unit 20 for an air conditioner. The indoor unit 20 includes: a housing 21, a first cross-flow fan 23, and a second cross-flow fan 24. The housing 21 has an air inlet and an air outlet; and the housing 21 has a first air supply duct and a second air supply duct that are separated front and rear and respectively connect the air inlet and the air outlet; the first air supply duct is located behind the second air supply duct.

[0068] A first cross-flow fan 23 is disposed within a first air supply duct to facilitate the formation of an airflow that enters the housing 21 from the air inlet, flows through the first air supply duct, and exits from the air outlet. A second cross-flow fan 24 is disposed within a second air supply duct to facilitate the formation of an airflow that enters the housing 21 from the air inlet, flows through the second air supply duct, and exits from the air outlet. The diameter ratio of the second cross-flow fan 24 to the first cross-flow fan 23 is less than or equal to 1:2.

[0069] Compared to traditional air conditioner indoor units, the indoor unit 20 of this embodiment improves the air duct arrangement inside the casing 21, forming a first and second air supply duct separated front and rear. Furthermore, a first cross-flow fan 23 and a second cross-flow fan 24 are simultaneously installed within the casing 21, with the first cross-flow fan 23 serving as the main fan, and the diameter of the second cross-flow fan 24 being significantly smaller than that of the first cross-flow fan 23. The airflows from the first and second air supply ducts converge and mix at the air outlet or inside the air outlet, and are then blown outwards together. By controlling the rotation of the first cross-flow fan 23 and the second cross-flow fan 24, the indoor unit 20 of this invention can adjust the airflow volume and velocity of the first and second air supply ducts, which are positioned relative to the air outlet, thereby providing a better air supply regulation effect.

[0070] In this embodiment, the air inlet of the indoor unit 20 of the air conditioner is usually opened on the upper surface of the housing 21. However, in order to increase the air intake area, in some optional embodiments, the air inlet can also be opened on the upper part of the front side of the housing 21.

[0071] Figure 1 The dashed lines indicate the positions of the two air guide plates of the indoor unit 20 of the air conditioner at the air outlet when the air outlet is closed. The position of the air guide plates at this time usually corresponds to the position of the air outlet. In other words, the position of the air guide plate at this time can be regarded as the specific position of the air outlet.

[0072] The indoor unit 20 of the air conditioner typically has its front side facing the air outlet in the horizontal direction. In this embodiment, both the first cross-flow fan 23 and the second cross-flow fan 24 are arranged laterally within the housing 21. The ends of both the first and second air supply ducts in the air outlet direction face the air outlet. When the first cross-flow fan 23 and the second cross-flow fan 24 operate at the same speed, the air volume of the first air supply duct is much greater than that of the second air supply duct, and the mixed airflow blown out of the air outlet is mainly from the first air supply duct.

[0073] However, the air velocity of the airflow from the first and second air supply ducts is affected not only by the rotational speeds of the first and second cross-flow fans 23 and 24, but also by the width of their respective ducts (the distance between the front and rear side walls). It is understandable that, since the diameter of the second cross-flow fan 24 is much smaller than that of the first cross-flow fan 23, and the width of the second air supply duct is also significantly smaller than that of the first air supply duct, when the first and second cross-flow fans 23 and 24 operate at the same speed, the air velocity of the airflow from the second air supply duct will not be significantly less than that from the first air supply duct. Rather, depending on the relationship between the widths of the second and first air supply ducts, it may be similar to or even greater than the air velocity of the airflow from the first air supply duct.

[0074] Normally, the air velocity of the airflow blowing out of the air supply duct is mainly affected by the duct width at the end of the duct and the fan speed. The duct width at the end of the air supply duct refers to the smaller of the distances between the ends of the front and rear side walls and the other side wall in the air outlet direction. Figure 1 Taking the embodiment shown as an example, the front and rear side walls of the second air supply duct are respectively: the third air supply duct wall 33 as the front air supply duct wall and the fourth air supply duct wall 34 as the rear air supply duct wall. The third air supply duct wall 33 extends to the air outlet at the end of the second air supply duct in the air outlet direction. Therefore, the distance between the end of the fourth air supply duct wall 34 in the air outlet direction and the third air supply duct wall 33 is the duct width at the end of the second air supply duct.

[0075] In some optional embodiments, the ratio of the width of the second air supply duct at its end to the width of the first air supply duct at its end is equal to or approximately equal to the ratio of the diameters of the second cross-flow fan 24 and the first cross-flow fan 23. Specifically, "approximately equal to" can mean that the difference between the duct width ratio and the diameter ratio is less than or equal to 20% of the diameter ratio. In this embodiment, the duct width ratio is equal to or approximately equal to the fan diameter ratio, thereby ensuring that the air velocities of the airflow from the first air supply duct and the second air supply duct are similar when the first cross-flow fan 23 and the second cross-flow fan 24 rotate at the same speed, thus facilitating the adjustment of the actual airflow effect at the outlet.

[0076] In some alternative embodiments, the diameter ratio of the second cross-flow fan 24 to the first cross-flow fan 23 can be further greater than or equal to 1:3. For example, the diameter of the first cross-flow fan 23 can be 105 mm, and the diameter of the second cross-flow fan 24 can be 44 mm.

[0077] The diameters of the first cross-flow fan 23 and the second cross-flow fan 24 are the diameters of the rotational trajectories of the outermost ends of their respective blades.

[0078] In some alternative implementations, the indoor unit 20 of the air conditioner also includes a duct divider.

[0079] The air duct separator is disposed inside the housing 21 and configured to separate a first air supply duct and a second air supply duct inside the housing 21.

[0080] The air duct partition includes: a first air duct wall 31 and a fourth air duct wall 34.

[0081] The first air duct wall 31 serves as the front air duct wall of the first air supply duct; the fourth air duct wall 34 serves as the rear air duct wall of the second air supply duct. Furthermore, the end of the first air duct wall 31 in the air outlet direction of the first air supply duct connects with the end of the fourth air duct wall 34 in the air outlet direction of the second air supply duct, thereby causing the airflow from the first and second air supply ducts to converge in front of the junction of the first air duct wall 31 and the fourth air duct wall 34.

[0082] refer to Figure 1 As shown, the air duct separator in this embodiment is formed by connecting a first air duct wall 31, which serves as the front side wall of the first air supply duct, and a fourth air duct wall 34, which serves as the rear side wall of the second air supply duct. The air duct separator separates the first air supply duct and the second air supply duct from front to back, so that part of the air entering the housing 21 from the air inlet flows into the first air supply duct near the front, and part flows into the second air supply duct near the rear. The junction of the first air duct wall 31 and the fourth air duct wall 34 serves as the common end of the first and second air supply ducts, and can be located at the air outlet or inside the air outlet. The airflow from the first and second air supply ducts can converge on the outside or inside of the air outlet accordingly.

[0083] Figure 1 The dashed lines indicate the positions of the two air guide plates of the indoor unit 20 of the air conditioner at the air outlet when the air outlet is closed. The position of the air guide plates at this time usually corresponds to the position of the air outlet. In other words, the position of the air guide plate at this time can be regarded as the specific position of the air outlet.

[0084] In this embodiment, the indoor unit 20 of the air conditioner is divided into a first air supply duct and a second air supply duct within the housing 21 by a duct divider. The end angle of the second air supply duct is lower than that of the first air supply duct, so the airflow from the second air supply duct can mix with the airflow from the first air supply duct. By adjusting the rotation speed of the first cross-flow fan 23 and the second cross-flow fan 24, the airflow rate from the second air supply duct can be changed, which can also affect the flow direction of the airflow at the air outlet.

[0085] In some alternative implementations, the indoor unit 20 of the air conditioner also includes a heat exchanger.

[0086] The heat exchanger is installed inside the housing 21; and part of the heat exchanger is located between the air inlet and the first cross-flow fan 23, and part of the heat exchanger is located between the air inlet and the second cross-flow fan 24, so that part of the air entering from the air inlet flows through the heat exchanger and enters the first air supply duct, and part of the air flows through the heat exchanger and enters the second air supply duct.

[0087] refer to Figure 1 As shown, in this embodiment, the indoor unit 20 of the air conditioner has both the first cross-flow fan 23 and the second cross-flow fan 24 corresponding to a portion of the heat exchanger, so that the airflow entering the first and second air supply ducts can exchange heat through the heat exchanger. Both the first cross-flow fan 23 and the second cross-flow fan 24 are arranged laterally within the housing 21. By reasonably setting the shape of the heat exchanger, most or even all of the air entering the housing 21 from the air inlet can be directed to flow through the heat exchanger before flowing into the first or second air supply duct.

[0088] In some alternative embodiments, an air inlet is provided on the top surface of the housing 21. The heat exchanger includes a first heat exchange section 261, a second heat exchange section 262, and a third heat exchange section 263.

[0089] The first heat exchange section 261 is inclined forward and upward from the rear interior side of the housing 21; the second heat exchange section 262 is inclined forward and downward from the front end of the first heat exchange section 261; and the projections of the first heat exchange section 261 and the second heat exchange section 262 on the horizontal plane overlap the projection of the first cross-flow fan 23 on the horizontal plane. The third heat exchange section 263 is inclined forward and downward from the front end of the second heat exchange section 262, and its front end is close to the front interior side of the housing 21; and the projection of the third heat exchange section 263 on the horizontal plane overlaps the projection of the second cross-flow fan 24 on the horizontal plane.

[0090] Furthermore, the first heat exchange section 261 is connected in series with the second heat exchange section 262, and the third heat exchange section 263 is connected in parallel with the first heat exchange section 261 and the second heat exchange section 262 and is controlled respectively; or the first heat exchange section 261, the second heat exchange section 262 and the third heat exchange section 263 are connected in parallel and are controlled respectively.

[0091] refer to Figure 1 As shown, the heat exchanger in this embodiment is divided into three sections in the front-to-back direction. The first heat exchange section 261 and the second heat exchange section 262 are opposite to the first air supply duct and the first cross-flow fan 23 located behind the air duct separator. The third heat exchange section 263 is opposite to the second air supply duct and the second cross-flow fan 24 located in front of the air duct separator. The airflow flowing through the first heat exchange section 261 and the second heat exchange section 262 mainly flows towards the first air supply duct, while the airflow flowing through the third heat exchange section 263 mainly flows towards the second air supply duct.

[0092] The heat exchanger is equipped with a coil for refrigerant flow. In an embodiment where the first heat exchange section 261 and the second heat exchange section 262 are connected in series, and the third heat exchange section 263 is connected in parallel with the first heat exchange section 261 and the second heat exchange section 262 and is controlled separately, the third heat exchange section 263 is simultaneously connected in parallel with the first heat exchange section 261 and the second heat exchange section 262 connected in series. That is to say, the first heat exchange section 261 and the second heat exchange section 262 are controlled separately, and the third heat exchange section 263 is controlled separately. By installing an electric three-way valve at the connection point between the coil in the third heat exchange section 263 and one of the coils in the first heat exchange section 261 and the second heat exchange section 262, or by installing electric valves on the series coils of the first heat exchange section 261 and the second heat exchange section 262 and on the coils in the third heat exchange section 263, the flow rate of the refrigerant in the first heat exchange section 261, the second heat exchange section 262 and the third heat exchange section 263 can be adjusted and the on / off state controlled, thereby changing the temperature of the airflow flowing through the first heat exchange section 261 and out of the first air supply duct, or flowing through the second heat exchange section 262 and out of the second air supply duct.

[0093] In the embodiment where the first heat exchange section 261, the second heat exchange section 262, and the third heat exchange section 263 are connected in parallel and controlled separately, by installing an electric four-way valve at the connection point of the coils in the first heat exchange section 261, the second heat exchange section 262, and the third heat exchange section 263, or by installing an electric valve on the coil in each heat exchange section, the refrigerant flow rate and on / off control in the first heat exchange section 261, the second heat exchange section 262, and the third heat exchange section 263 can be adjusted more precisely, thereby changing the temperature of the airflow flowing through the first heat exchange section 261 and out of the first air supply duct, or flowing through the second heat exchange section 262 and out of the second air supply duct.

[0094] In addition, in this embodiment, the diameter ratio of the second cross-flow fan 24 to the first cross-flow fan 23 is less than or equal to 1:2. At the same time, the heat exchanger is divided into a first heat exchange section 261 and a second heat exchange section 262 corresponding to the first cross-flow fan 23 and a third heat exchange section 263 corresponding to the second cross-flow fan 24. The corresponding length of the heat exchanger corresponds to the diameter of the cross-flow fan, and the heat exchange efficiency is higher when the heat exchanger provides cooling or heating.

[0095] In some alternative embodiments, the bottom height of the second cross-flow fan 24 is lower than the bottom height of the first cross-flow fan 23; and the angle between the surface of the third heat exchange section 263 and the horizontal plane is smaller than the angle between the surface of the second heat exchange section 262 and the horizontal plane.

[0096] refer to Figure 1 As shown, in this embodiment, the bottom height of the second cross-flow fan 24 is reduced, and the angle between the surface of the third heat exchange section 263 and the horizontal plane is decreased, so that the first heat exchange section 261, the second heat exchange section 262 and the third heat exchange section 263 are all closer to the first cross-flow fan 23 and the second cross-flow fan 24, so that the airflow in front of the air inlet flows downward along the front side of the inside of the housing 21, and the third heat exchange section 263 also corresponds to an air inlet in the longitudinal direction, so as to avoid insufficient actual intake air volume of the second cross-flow fan 24.

[0097] In some alternative implementations, the duct partition also includes a partition plate 35.

[0098] refer to Figure 1 As shown, one end of the partition plate 35 is connected to the first air duct wall 31 and / or the fourth air duct wall 34, and the other end extends to the connection between the second heat exchange section 262 and the third heat exchange section 263, so that the air flowing through the first heat exchange section 261 and the second heat exchange section 262 enters the first air supply duct, and the air flowing through the third heat exchange section 263 enters the second air supply duct.

[0099] In this embodiment, the duct separator further forms a separator plate 35, thereby separating the first and second air supply ducts into a single unit. The airflow passing through the first heat exchange section 261 and the second heat exchange section 262 of the heat exchanger can only flow into the first air supply duct, and the airflow passing through the third heat exchange section 263 can only flow into the second air supply duct. Therefore, when the indoor unit 20 of the air conditioner controls the refrigerant flow rate in the first heat exchange section 261, the second heat exchange section 262, and the third heat exchange section 263, the temperature of the airflow blown out by the first and second air supply ducts is more controllable, and the airflow mixing effect is better.

[0100] The lower end of the partition plate 35 can be connected to the first air duct wall 31, the fourth air duct wall 34, or both simultaneously. Furthermore, the partition plate 35 can be integrally formed with one of the first air duct wall 31 and the fourth air duct wall 34, with a smooth surface transition.

[0101] In some alternative implementations, the indoor unit 20 of the air conditioner further includes a second duct wall 32 and a third duct wall 33.

[0102] The second air duct wall 32 serves as the rear air duct wall of the first air supply duct; the end of the second air duct wall 32 in the air outlet direction is connected to the front end of the bottom surface of the housing 21, serving as the lower side of the air outlet. The third air duct wall 33 serves as the front air duct wall of the second air supply duct; the end of the third air duct wall 33 in the air outlet direction is connected to the lower end of the front side surface of the housing 21, serving as the upper side of the air outlet.

[0103] Furthermore, the surface of the first air duct wall 31 is bent to form a volute structure that cooperates with the first cross-flow fan 23; the surface of the third air duct wall 33 is bent to form a volute structure that cooperates with the second cross-flow fan 24.

[0104] refer to Figure 1 As shown, in this embodiment, the indoor unit 20 of the air conditioner defines a first air supply duct by a first air duct wall 31 and a second air duct wall 32 spaced apart front and rear, and defines a second air supply duct by a third air duct wall 33 and a fourth air duct wall 34 spaced apart front and rear. The first air duct wall 31 and the third air duct wall 33 are respectively close to the first cross-flow fan 23 and the second cross-flow fan 24 and form a volute structure to define the airflow direction in coordination with the rotation of the fans.

[0105] In this embodiment, by reasonably setting the position and shape of the first air duct wall 31, the second air duct wall 32, the third air duct wall 33 and the fourth air duct wall 34, the upper part of the first cross-flow fan 23 and the second cross-flow fan 24 faces upward toward the heat exchanger and the air inlet, and the air outlet direction is tilted forward and downward, corresponding to the air outlet opened on the lower part of the front side of the housing 21.

[0106] In some alternative embodiments, the angle between the first air duct wall 31 and the fourth air duct wall 34 at their junction is greater than or equal to 10° and less than or equal to 25°.

[0107] In this embodiment, the air duct separator separates the first air supply duct from the second air supply duct. At the junction of the first air duct wall 31 and the fourth air duct wall 34, an angle greater than or equal to 10° and less than or equal to 25° is formed. This allows the airflows from the first air supply duct and the second air supply duct to converge at the same angle. This angle range not only allows the airflows from the first air supply duct and the second air supply duct to converge and mix, but also avoids the wind speed being greatly affected after the airflows converge and mix due to an excessively large angle.

[0108] In some alternative implementations, the junction of the first duct wall 31 and the fourth duct wall 34 is spaced apart from the air outlet.

[0109] Furthermore, the air duct partition also includes an air duct extension plate 36. The air duct extension plate 36 is rotatably disposed at the junction of the first air duct wall 31 and the fourth air duct wall 34, and is located inside the air outlet, for changing the confluence position of the airflow from the first air supply duct and the second air supply duct.

[0110] refer to Figure 1 As shown, in this embodiment, the junction of the first air duct wall 31 and the fourth air duct wall 34 is spaced apart from the air outlet. The ends of the first air supply duct and the second air supply duct are directly opposite this spaced position. Therefore, the airflows blown out by the first air supply duct and the second air supply duct can converge and mix at the spaced position before reaching the air outlet.

[0111] Figure 2 This is a cross-sectional schematic diagram of the indoor unit 20 of an air conditioner according to another embodiment of the present invention; Figure 3 yes Figure 2 Another schematic diagram of the indoor unit 20 of the air conditioner shown; Figure 4 yes Figure 2 Another schematic diagram of the indoor unit 20 of the air conditioner shown.

[0112] refer to Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the duct extension plate 36 is rotatably disposed, and when the duct extension plate 36 rotates to such a position... Figure 2 or Figure 4 When the plate extends forward as shown, the upper and lower sides can be regarded as extensions of the fourth air duct wall 34 and the first air duct wall 31, respectively, thereby guiding and changing the direction of the airflow from the first air supply duct and the second air supply duct, and making the intersection of the airflow from the first air supply duct and the second air supply duct located at the end of the air duct extension plate 36.

[0113] For further reference Figure 3 As shown, the air duct extension plate 36 can also be rotated to a position close to the first air duct wall 31, so that the intersection of the airflow of the first air supply duct and the second air supply duct is located at the rotation axis position of the air duct extension plate 36, that is, at the junction of the first air duct wall 31 and the fourth air duct wall 34.

[0114] In some alternative embodiments, the ratio of the distance D1 between the lower side of the air outlet and the upper side of the air outlet in the front-rear direction to the distance D2 between the upper side of the air outlet and the rear side of the housing 21 is greater than or equal to 1:3.

[0115] In this embodiment, the air outlet of the indoor unit 20 of the air conditioner is located on the lower side of the front surface of the housing 21, and the opening direction is inclined downward. The upper side of the air outlet is where the end of the third air duct wall 33 in the air outlet direction of the second air supply duct connects with the lower end of the front side of the housing 21, and the lower side of the air outlet is where the end of the first air supply duct in the air outlet direction connects with the front end of the bottom of the housing 21.

[0116] refer to Figure 1 As shown, in this embodiment, the distance D1 between the lower side of the air outlet of the indoor unit 20 and the upper side of the air outlet in the front-to-back direction is the distance between the upper and lower sides of the air outlet projected onto the horizontal plane. The distance D2 between the upper side of the air outlet and the rear side of the housing 21 can typically be the front-to-back width of the housing 21 of the indoor unit 20. In this embodiment, the ratio of the distance D1 between the lower side of the air outlet and the upper side of the air outlet in the front-to-back direction to the distance D2 between the upper side of the air outlet and the rear side of the housing 21 is greater than 1:3, thereby giving the air outlet a larger opening and allowing the first and second air supply ducts to discharge air smoothly at the same time.

[0117] In some alternative embodiments, the ratio of the distance D1 between the lower side of the air outlet and the upper side of the air outlet in the front-rear direction to the distance D2 between the upper side of the air inlet and the rear side of the housing 21 can be further greater than or equal to 1:2.

[0118] refer to Figure 2 As shown, in some optional embodiments, the indoor unit 20 of the air conditioner further includes: a first air guide plate 41 and a second air guide plate 42.

[0119] The first air guide plate 41 and the second air guide plate 42 are respectively arranged laterally at the air outlet to close the air outlet or adjust the airflow direction at the air outlet. When the first air guide plate 41 and the second air guide plate 42 are in the closed air outlet position, the first air guide plate 41 extends forward from the lower side of the air outlet, and the angle between the surface of the first air guide plate 41 and the horizontal plane is less than or equal to 10°. The second air guide plate 42 extends upward at an angle from the front end of the first air guide plate 41 to the upper side of the air outlet.

[0120] In this embodiment, the air outlet of the indoor unit 20 of the air conditioner is horizontally opened on the housing 21. Therefore, the first air guide plate 41 and the second air guide plate 42, which are arranged horizontally, rotate around the horizontally extending rotation axis and can each play the role of guiding air up and down. The figure shows the position of the first air guide plate 41 and the second air guide plate 42 when the air outlet is closed. Referring to the figure, when the first air guide plate 41 is in the position of closing the air outlet, one end of the first air guide plate 41 is located at the lower side of the air outlet, that is, at the first end of the fourth air duct wall 34, and extends towards the front of the indoor unit 20 of the air conditioner.

[0121] It should be noted that the forward extension of the first air guide plate 41 is not limited to a horizontal forward extension, but can extend at a slight angle. That is to say, the surface of the first air guide plate 41 can extend horizontally forward, or it can extend at an angle similar to the extension section of the third air duct wall 33. The angle between the surface of the first air guide plate 41 and the horizontal plane is less than or equal to 10°, that is, the surface of the first air guide plate 41 is parallel or substantially parallel to the horizontal plane, so that the airflow direction blown out along the surface of the first air guide plate 41 is basically forward.

[0122] The surface of the first air guide plate 41 can be flat or curved. When the surface is curved, the concave part of the curved surface faces upward when the first air guide plate 41 is in the closed air outlet position. In addition, when the surface is curved, the angle between the surface of the first air guide plate 41 and the horizontal plane is the angle between the connecting line between the front and rear ends of the surface and the horizontal plane.

[0123] The first air guide plate 41 extends from back to front, thereby closing the lower portion of the air outlet. The second air guide plate 42 extends upward from the front end of the first air guide plate 41 to the upper side of the air outlet, thereby closing the front portion of the air outlet. The specific tilting direction of the second air guide plate 42 is forward and upward.

[0124] Figure 2 The positions of the rotation axes of the first air guide plate 41 and the second air guide plate 42 are also indicated by dashed lines. (Reference) Figure 2 As shown, in some optional embodiments, when the first air guide plate 41 and the second air guide plate 42 are in the closed air outlet position, the rotation axis Q1 of the first air guide plate 41 is located near its own front upper side; and the rotation axis Q2 of the second air guide plate 42 is located near the rear upper side of the first air guide plate 41.

[0125] Figure 5 yes Figure 2 A schematic diagram of the first air guide plate 41 of the indoor unit 20 of the air conditioner shown.

[0126] Taking the first air guide plate 41 as an example, the front end and rear end of the first air guide plate 41 in this embodiment are determined in the following manner:

[0127] The first air guide plate 41 is divided into three equal sections N1, N2, and N3 along the front-to-back direction. When the position of the first air guide plate 41 is as shown in the figure, the area corresponding to its first section N1 is closer to the front end, the area corresponding to its third section N3 is closer to the rear end, and the area corresponding to its second section N2 is closer to the middle. The same applies to other air guide plates.

[0128] When the first air guide plate 41 is tilted or its surface is curved, the position near the front end, rear end or middle of the first air guide plate 41 depends on the position of the vertical projection on the plate surface (the curved plate surface is regarded as the plane where the connecting line between the front and rear ends of the air guide plate is located).

[0129] refer to Figure 2 and Figure 3 As shown, the rotation axis Q2 of the second air guide plate 42 in this embodiment is far away from its own plate surface and located on the upper side of the rear end of the first air guide plate 41. When rotating, it can move downward with a rotation trajectory of a larger diameter, without colliding with the first air guide plate 41, and leaving sufficient rotation space for the first air guide plate 41.

[0130] refer to Figure 3 As shown, in this embodiment, the indoor unit 20 of the air conditioner can control the second air guide plate 42 to rotate while the first air guide plate 41 does not rotate, so that the surface of the first air guide plate 41 forms an extension of the fourth air duct wall 34, so that the air outlet only opens to the front side, and the airflow blown by the first air supply duct and the second air supply duct blows forward at the same time.

[0131] In this embodiment, the indoor unit 20 of the air conditioner can have a preset mixed cooling and air supply mode. In the mixed cooling and air supply mode, the first air guide plate 41 of the indoor unit 20 is in the closed air outlet position and the second air guide plate 42 is open, so that the air outlet is only opened to the front, and the airflow blown by the first air supply duct and the second air supply duct blows forward simultaneously. At the same time, the indoor unit 20 also controls the operation of the heat exchanger, specifically, it controls the first heat exchange section 261 and the second heat exchange section 262 to work while the third heat exchange section 263 does not work, so that the first air supply duct blows the cooling airflow carrying the cold air and the second air supply duct blows the ambient airflow with a temperature close to the room temperature.

[0132] In this embodiment, the indoor unit 20 of the air conditioner further controls the air duct extension plate 36 to rotate to be close to the first air duct wall 31, so that the ambient airflow blown out by the second air supply duct mixes with the cooling airflow blown out by the first air supply duct inside the air outlet, so that the air outlet blows out a mixed airflow with a gentler temperature, making the body feel more comfortable when blowing directly on the human body.

[0133] Correspondingly, the indoor unit 20 of the air conditioner in this embodiment can also have a preset strong cooling air supply mode. That is, based on controlling the first air guide plate 41 of the indoor unit 20 of the air conditioner to be in the position of closing the air outlet and the second air guide plate 42 to be open, the first heat exchange section 261, the second heat exchange section 262 and the third heat exchange section 263 of the heat exchanger are all controlled to work, so that all the air blown from the first air supply duct and the second air supply duct to the air outlet is a cooling airflow.

[0134] In some alternative implementations, the indoor unit 20 of the air conditioner also includes a third air guide plate 43.

[0135] The third air guide plate 43 is arranged horizontally inside the air outlet; and the distance from the third air guide plate 43 to its front end and rear end from the rotation axis Q3 is greater than the distance from its rotation axis to the air outlet.

[0136] The third air guide plate 43 in this embodiment can be rotated inside the air outlet when the indoor unit 20 of the air conditioner is in any operating mode, thereby changing the air outlet direction. It can be understood that when the third air guide plate 43 rotates back and forth, the indoor unit 20 of the air conditioner can achieve the effect of vertical air sweeping.

[0137] Furthermore, refer to Figure 4 As shown, in this embodiment, the third air guide plate 43 can be rotated to a position where one end is close to the wall 33 of the third air duct, and the second air guide plate 42 can also be rotated to a position where the plate surface extends longitudinally, thereby cooperating to separate the front side of the air outlet from the first air supply duct and the second air supply duct, so that the airflow blown out by the first air supply duct and the second air supply duct is blocked from the front and blown obliquely downward.

[0138] refer to Figure 4 As shown, the indoor unit 20 of this embodiment can also have a preset short-range heating and air supply mode. In the short-range heating and air supply mode, the third air guide plate 43 of the indoor unit 20 rotates to one end close to the third air duct wall 33 and the plate surface is tilted forward and downward. The first air guide plate 41 rotates to tilt downward or forward and downward. The second air guide plate 42 rotates to one end close to the bottom surface of the housing 21, so that the first air supply duct and the second air supply duct can only discharge air obliquely downward from the lower part of the air outlet.

[0139] Because the hot air produced by an air conditioner has a low density, it naturally tends to rise, a physical characteristic that causes heat to easily accumulate at the top. In this embodiment, the indoor unit 20 of the air conditioner, by setting a close-range heating and air delivery mode, controls the rotation of the three air guide vanes so that the air outlet direction of the indoor unit 20 is basically directly downwards. This allows the heating airflow to be blown further down, improving the close-range heating efficiency of the indoor unit 20 when users have heating needs, without having to wait for the overall room temperature to rise.

[0140] In some alternative embodiments, the distance between the rotation axis Q3 of the third air guide plate 43 and any end of the third air guide plate 43 can be equal to or slightly greater than the distance between the rotation axis Q3 of the third air guide plate 43 and the third air duct wall 33, so that when the indoor unit 20 of the air conditioner is in close-range heating and air supply mode, the end of the third air guide plate 43 can be close to or abut against the surface of the first air duct wall 31. The term "slightly greater than" here can generally be specifically greater than 1:1 and less than or equal to 105:100.

[0141] Figure 6 This is a schematic diagram of an air conditioner according to an embodiment of the present invention.

[0142] refer to Figure 6 As shown, this embodiment also provides an air conditioner 10. The air conditioner 10 includes the indoor unit 20 of any of the above embodiments.

[0143] The air conditioner 10 is used to regulate indoor air. Specifically, it may include one or more functions such as regulating air temperature, humidity, air quality, humidifying or dehumidifying indoor air, and introducing fresh air. It is also understood that, in terms of temperature regulation, the indoor unit 20 of this embodiment may have other air supply modes not described, in addition to the air supply modes already listed. The air supply modes listed in this embodiment are only for explanation of specific air supply modes and not for limiting the types of air supply modes.

[0144] The air conditioner 10 can be composed of an evaporator, a condenser, a compressor, a throttling device, and other necessary components to form a vapor compression refrigeration cycle system, so as to output cold / hot air through the indoor unit 20 of the air conditioner to achieve cooling and heating of the indoor environment.

[0145] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. An indoor unit of an air conditioner with dual fans, comprising: The housing has an air inlet and an air outlet; and the housing has a first air supply duct and a second air supply duct that are separated from each other and connect the air inlet and the air outlet respectively; the first air supply duct is located behind the second air supply duct. A first cross-flow fan is installed in the first air supply duct to promote the formation of an airflow that enters the housing from the air inlet, flows through the first air supply duct, and is blown out from the air outlet. A second cross-flow fan is installed inside the second air supply duct to promote the formation of an airflow that enters the housing from the air inlet, flows through the second air supply duct, and is blown out from the air outlet; and the diameter ratio of the second cross-flow fan to the first cross-flow fan is less than or equal to 1:

2. A duct divider is disposed within the housing and configured to separate the first air supply duct and the second air supply duct within the housing; A heat exchanger is disposed within the housing; and a portion of the heat exchanger is located between the air inlet and the first cross-flow fan, and a portion is located between the air inlet and the second cross-flow fan, so that a portion of the air entering from the air inlet flows through the heat exchanger and into the first air supply duct, and a portion flows through the heat exchanger and into the second air supply duct. in The air duct partition includes: The first air duct wall serves as the front air duct wall of the first air supply duct. The fourth air duct wall serves as the rear air duct wall of the second air supply duct; and The end of the first air duct wall in the air outlet direction of the first air supply duct is connected to the end of the fourth air duct wall in the air outlet direction of the second air supply duct, so that the air outlet airflows of the first air supply duct and the second air supply duct converge in front of the junction of the first air duct wall and the fourth air duct wall.

2. The indoor unit of the air conditioner according to claim 1, wherein... The air inlet is provided on the top surface of the housing; and The heat exchanger includes: The first heat exchange section is inclined forward and upward from the rear inside the shell. The second heat exchange section is inclined forward and downward from the front end of the first heat exchange section; and the projections of the first heat exchange section and the second heat exchange section on the horizontal plane cover the projection of the first cross-flow fan on the horizontal plane. The third heat exchange section is inclined forward and downward from the front end of the second heat exchange section, with its front end close to the inner front side of the housing; and the projection of the third heat exchange section on the horizontal plane overlaps the projection of the second cross-flow fan on the horizontal plane; and The first heat exchange section is connected in series with the second heat exchange section, and the third heat exchange section is connected in parallel with the first heat exchange section and the second heat exchange section and is controlled respectively; or the first heat exchange section, the second heat exchange section and the third heat exchange section are connected in parallel and are controlled respectively.

3. The indoor unit of the air conditioner according to claim 2, wherein... The bottom height of the second cross-flow fan is lower than the bottom height of the first cross-flow fan; and The angle between the surface of the third heat exchange section and the horizontal plane is smaller than the angle between the surface of the second heat exchange section and the horizontal plane.

4. The indoor unit of the air conditioner according to claim 2, wherein... The air duct partition also includes: The partition plate has one end connected to the first air duct wall and / or the fourth air duct wall, and the other end extends to the connection between the second heat exchange section and the third heat exchange section, so that the air flowing through the first heat exchange section and the second heat exchange section enters the first air supply duct, and the air flowing through the third heat exchange section enters the second air supply duct.

5. The indoor unit of the air conditioner according to claim 1 further includes: The second air duct wall serves as the rear air duct wall of the first air supply duct; The second air duct wall is connected to the front end of the bottom of the housing at its end in the air outlet direction of the first air supply duct, serving as the lower side of the air outlet; The third air duct wall serves as the front air duct wall of the second air supply duct; the end of the third air duct wall in the air outlet direction of the second air supply duct connects with the lower end of the front side of the housing, serving as the upper side of the air outlet; and The surface of the first air duct wall is bent to form a volute structure that cooperates with the first cross-flow fan; The surface of the third duct wall is bent to form a volute structure that cooperates with the second cross-flow fan.

6. The indoor unit of the air conditioner according to claim 1, wherein... The angle between the first air duct wall and the fourth air duct wall at their junction is greater than or equal to 10° and less than or equal to 25°.

7. The indoor unit of the air conditioner according to claim 1, wherein... The junction of the first and fourth duct walls is spaced apart from the air outlet; and The air duct partition also includes: The air duct extension plate is rotatably disposed at the junction of the first air duct wall and the fourth air duct wall, and is located inside the air outlet, for changing the confluence position of the airflow from the first air supply duct and the second air supply duct.

8. The indoor unit of the air conditioner according to claim 1, wherein... The ratio of the distance between the lower side of the air outlet and the upper side of the air outlet in the front-to-back direction to the distance between the upper side of the air outlet and the rear side of the housing is greater than or equal to 1:

3.

9. The indoor unit of the air conditioner according to claim 8 further includes: The first and second air guide plates are respectively arranged laterally at the air outlet, and are used to close the air outlet or adjust the airflow direction at the air outlet; in When the first air guide plate and the second air guide plate are in the position of closing the air outlet, the first air guide plate extends forward from the lower side of the air outlet, and the angle between the surface of the first air guide plate and the horizontal plane is less than or equal to 10°. The second air guide plate extends upward from the front end of the first air guide plate to the upper side of the air outlet.

10. The indoor unit of the air conditioner according to claim 9, wherein... When the first and second air guide plates are in the closed position of the air outlet, the rotation axis of the first air guide plate is located near its upper front end; and The rotation axis of the second air guide plate is located near the upper rear end of the first air guide plate.

11. The indoor unit of the air conditioner according to claim 8, further comprising: The third air guide plate is arranged laterally inside the air outlet; and The distance from the third air guide plate to its front and rear ends from its rotation axis is greater than the distance from its rotation axis to the air outlet.

12. An air conditioner, comprising: The indoor unit of the air conditioner according to any one of claims 1 to 11.

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