Air conditioner indoor unit and air conditioner

Abstract

This application relates to the field of air conditioning equipment technology, and more particularly to an indoor air conditioning unit and an air conditioner. An indoor air conditioning unit includes: a casing forming an internal space, an air inlet and an air outlet communicating with the internal space, and an air duct system. The air duct system includes: a volute disposed within the internal space; a volute tongue disposed within the internal space and forming an air duct with the volute, one end of the air duct communicating with the air inlet and the other end communicating with the air outlet; a fan also used to blow heat-exchanged air along the air duct through the air outlet out of the internal space; an air guide plate movably disposed within the air duct to change the airflow direction; and an air damper plate movably disposed for closing or opening the air outlet, and the air damper plate also used to change the airflow direction together with the air guide plate. The indoor air conditioning unit provided by this application has a better ability to adjust the airflow direction with the air guide plate, thus enabling the indoor air conditioning unit to deliver air at a large angle.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to an indoor air conditioning unit and an air conditioner. Background Technology

[0002] An air conditioner indoor unit is a device installed indoors to cool or heat the room. When working, the indoor unit typically draws in indoor air through the air inlet for heat exchange, and then blows the heat-exchanged air back into the room through the air outlet to achieve the purpose of cooling or heating the room.

[0003] Considering that people often need to change the airflow direction of the indoor unit when using it, related technologies usually install an air guide plate on the outside of the indoor unit and place it close to the air outlet. In this way, the airflow direction can be adjusted by changing the direction of the air guide plate.

[0004] However, due to limitations in the size of the air outlet and aesthetic considerations, the air guide plate installed outside the indoor unit of the air conditioner is usually small and has a limited rotation angle. This results in a limited ability of the air guide plate to adjust the air delivery direction, which in turn prevents the indoor unit of the air conditioner from delivering air at a large angle. Summary of the Invention

[0005] This application discloses an indoor air conditioning unit and an air conditioner, whose air guide plate has a good ability to adjust the air supply direction, thereby enabling the indoor air conditioning unit to supply air at a large angle.

[0006] To achieve the above objectives, firstly, this application discloses an indoor unit for adjusting air conditioning, comprising:

[0007] The housing encloses an internal space, and the housing is provided with an air inlet and an air outlet communicating with the internal space.

[0008] A fan, which is disposed in the internal space, is used to draw air from outside the casing into the internal space through the air inlet;

[0009] A heat exchanger, disposed in the internal space, is used for heat exchange of the air drawn into the internal space; and,

[0010] The air duct system includes:

[0011] A volute, wherein the volute is disposed within the internal space;

[0012] The volute tongue is disposed in the internal space and forms an air duct with the volute shell. One end of the air duct is connected to the air inlet and the other end is connected to the air outlet. The fan is also used to blow the heat-exchanged air out of the internal space along the air duct and through the air outlet.

[0013] An air guide plate is movably disposed within the air duct to change the direction of airflow.

[0014] A damper plate, which is movably disposed for closing or opening the air outlet, and which, together with the air guide plate, is used to change the direction of airflow.

[0015] Because the air guide plate is movably installed within the air duct, it can change the airflow direction when moved to different angles, thereby achieving the purpose of adjusting the air delivery direction. Furthermore, since the air guide plate is built into the indoor unit of the air conditioner, compared to related technologies where the air guide plate is placed externally, there is no need to consider aesthetics or outlet size limitations to design a smaller air guide plate. In other words, when the air guide plate is built into the indoor unit, its size can be designed to be larger, thus improving its ability to adjust the air delivery direction and allowing the indoor unit to deliver air at a wider angle.

[0016] In addition, since the damper plate is movable and used to close or open the air outlet, it can function as a means of closing or opening the air outlet. Furthermore, because the damper plate is movable, by moving it relative to the air outlet, it can also work in conjunction with the air guide plate to further change the direction of airflow.

[0017] This design serves two purposes. First, the damper not only opens or closes the air outlet but also works with the air guide to change the airflow direction. This multi-functional design reduces the number of components in the indoor unit, thus minimizing its size. Second, because the damper works in conjunction with the air guide to change airflow, it further alters the airflow direction. This dual action of the damper and air guide enhances the indoor unit's ability to adjust airflow direction, allowing it to easily achieve wide-angle airflow.

[0018] Secondly, this application discloses another type of air conditioner indoor unit, including:

[0019] The housing encloses an internal space, and the housing is provided with an air inlet and an air outlet communicating with the internal space.

[0020] A fan, which is disposed in the internal space, is used to draw air from outside the casing into the internal space through the air inlet;

[0021] A heat exchanger, disposed in the internal space, is used for heat exchange of the air drawn into the internal space; and,

[0022] The air duct system includes:

[0023] A volute, wherein the volute is disposed within the internal space;

[0024] The volute tongue is disposed in the internal space and forms an air duct with the volute shell. One end of the air duct is connected to the air inlet and the other end is connected to the air outlet. The fan is also used to blow the heat-exchanged air out of the internal space along the air duct and through the air outlet.

[0025] An air guide plate, which is movably disposed within the air duct and configured such that at least a portion of its structure can move onto a preset airflow path to change the direction of at least a portion of the airflow;

[0026] A damper, movably configured to move to close or open the air outlet, and also to move such that at least a portion of the structure is downstream of the air guide plate to further change the direction of the airflow.

[0027] Since at least a portion of the air guide plate can move onto the preset airflow path, when the air flows along the preset airflow path, the air will collide with at least a portion of the air guide plate, and the air guide plate will cause at least a portion of the air to deviate from the preset airflow path, thereby achieving the purpose of adjusting the flow direction of at least a portion of the air.

[0028] Since the air guide plate is built into the indoor unit of the air conditioner, compared to the method of placing the air guide plate outside the indoor unit in related technologies, there is no need to design the size of the air guide plate to be smaller due to considerations of aesthetics and air outlet size limitations. In other words, when the air guide plate is built into the indoor unit of the air conditioner, the size of the air guide plate can be designed to be larger. This can improve the ability of the air guide plate to adjust the air delivery direction, thereby enabling the indoor unit of the air conditioner to deliver air at a large angle.

[0029] Optionally, the cochlear tongue includes:

[0030] A volute tongue guide section, the volute tongue guide section having a volute tongue guide surface facing the air duct, the volute tongue guide surface being used to guide the air to flow along a predetermined flow path; and,

[0031] The volute tongue expansion section, the volute tongue guide section and the volute tongue expansion section are arranged along the extension direction of the air duct and connected to each other. The volute tongue expansion section is located on the side of the volute tongue guide section near the air outlet. The volute tongue expansion section has a volute tongue expansion surface facing the air duct. The intersection of the volute tongue expansion surface and the volute tongue guide surface forms a first edge. The surface passing through the first edge and tangent to the volute tongue guide surface is the first tangent surface.

[0032] The volute tongue expansion surface is recessed on the side of the first cross-section away from the volute shell, so that the volute tongue expansion surface and the first cross-section enclose an expansion chamber. The air guide plate can move into the expansion chamber, or at least part of the air guide plate can move out of the expansion chamber so that at least part of the air guide plate is located in the preset flow path.

[0033] Because the volute tongue expansion surface is recessed on the side of the first tangent away from the volute shell, and because the volute tongue expansion surface and the first tangent form an expansion chamber, when the air guide plate can move into the expansion chamber, the air guide plate will not intrude into the preset flow path. When the air guide plate does not intrude into the preset flow path, the air guide plate will not interfere with the airflow direction, therefore, the air can flow along the preset flow path.

[0034] When part of the air guide plate moves to the outside of the expansion area, the air guide plate will block at least part of the air from continuing to flow along the preset flow path, and under the guidance of the air guide plate, the air will deviate from the preset flow path, thereby achieving the purpose of adjusting the air flow direction.

[0035] By setting the volute tongue expansion surface, which is recessed into the side of the first tangent away from the volute, and the volute tongue expansion surface and the first tangent enclose an expansion chamber, when there is no need to change the airflow direction, the air guide plate can be moved into the expansion chamber. When it is necessary to change the airflow direction, only part of the air guide plate needs to be moved out of the expansion chamber. The principle is very simple and can reduce the cost of the indoor unit of the air conditioner.

[0036] Optionally, the volute includes:

[0037] A volute guide section, the volute guide section having a volute guide surface facing the air duct, the volute guide surface being used, together with the volute tongue guide surface, to guide the airflow along the preset flow path; and...

[0038] The volute expansion section, the volute guide section and the volute expansion section are arranged along the extension direction of the air duct and connected to each other. The volute expansion section is located on the side of the volute guide section near the air outlet. The volute expansion section has a volute expansion surface facing the air duct. The intersection of the volute expansion surface and the volute guide surface forms a second edge. The surface passing through the second edge and tangent to the volute guide surface is the second tangent surface.

[0039] The volute expansion surface is recessed on the side of the second cross-section away from the volute tongue, and at least a portion of the damper plate is movable to the side of the second cross-section opposite to the volute tongue.

[0040] Since at least a portion of the damper plate's structure can move to the side of the second sectional surface opposite to the volute tongue, air resistance can be reduced to some extent. On the one hand, this can increase the airflow of the indoor unit to a certain degree. On the other hand, it can also make the airflow from the indoor unit smoother.

[0041] Optionally, the indoor unit of the air conditioner has a directional air supply mode. When the indoor unit of the air conditioner is in the directional air supply mode, the air guide plate moves to the side of the first cross-section away from the volute, and at least a portion of the structure of the damper plate moves to the side of the second cross-section away from the volute tongue.

[0042] This design allows the air guide plate and damper plate to minimize their impact on the airflow direction, so that the airflow direction is mainly determined by the volute guide surface and the volute tongue guide surface. Under the joint guidance of the volute guide surface and the volute tongue guide surface, the air flows along the preset flow path, making the airflow of the indoor unit of the air conditioner stronger, thus achieving the purpose of long-distance air delivery.

[0043] Optionally, the air guide plate has a first air guide end and a second air guide end opposite each other along the extension direction of the air duct, and the first air guide end and / or the second air guide end are located on the first cross-section.

[0044] By positioning the first air guide end and / or the second air guide end on the first sectional surface, the first air guide end and / or the second air guide end can also guide the airflow along the preset flow path, allowing the air to flow better along the preset flow path, thereby making the airflow path more regular.

[0045] Optionally, the first air guide end is spliced ​​with the first edge.

[0046] When the first air guide end is spliced ​​with the first edge, the connection between the first air guide end and the first edge is smooth and there is no gap, which can reduce wind resistance.

[0047] Optionally, the volute tongue expansion surface has a third edge that is away from the first edge, and the third edge is located on the side of the first cross-section away from the volute shell.

[0048] Since the third edge is located on the side of the first tangent away from the volute, the third edge will not intrude into the preset flow path, resulting in less wind resistance and smoother airflow along the preset flow path.

[0049] Optionally, the damper plate has a first damper end and a second damper end opposite to each other along the extension direction of the air duct, and the first damper end and / or the second damper end are located on the second cross-section.

[0050] By positioning the first damper end and / or the second damper end on the second sectional surface, the first damper end and / or the second damper end can also guide the airflow along the preset flow path, allowing the air to flow better along the preset flow path, thereby making the airflow path more regular.

[0051] Optionally, the first damper end is spliced ​​with the second edge.

[0052] When the first damper end is spliced ​​with the second edge, the connection between the first damper end and the second edge is smooth and there will be no gap, which can reduce wind resistance.

[0053] Optionally, the indoor unit of the air conditioner has a variable air supply mode. When the indoor unit of the air conditioner is in the variable air supply mode, at least part of the air guide plate moves to the side of the first cross-section near the volute, for guiding at least part of the air to deviate from the preset flow path and flow towards the damper plate. The damper plate is used to further change the direction of the air flow.

[0054] Since at least part of the air guide plate can move to the side of the first sectional surface near the volute, when at least part of the air guide plate moves to the side of the first sectional surface near the volute, part of the air guide plate will intrude into the preset flow path. In this way, the air flowing to the air guide plate will deviate from the preset flow path and flow towards the damper plate under the guidance of the air guide plate. When the air flows towards the damper plate, the damper plate can continue to change the air flow direction, thereby achieving the purpose of adjusting the air supply direction. This gives the indoor unit of the air conditioner the function of adjusting the air supply direction, resulting in a better user experience.

[0055] Optionally, the variable air supply mode includes a first variable air supply mode. When the indoor unit of the air conditioner is in the first variable air supply mode, the first air guide end of the air guide plate is located on the side of the first cross-section close to the volute, and the second air guide end of the air guide plate is located on the side of the first cross-section away from the volute. The first air guide end and the second air guide end are the two ends of the air guide plate along the extension direction of the air duct, and the first air guide end is located on the side of the second air guide end away from the air outlet. The air guide plate between the first air guide end and the first cross-section is used to guide at least part of the air to deviate from the preset flow path and flow to the damper plate.

[0056] Since the first air guide end of the air guide plate is located on the side of the first cross-section close to the volute, and since the first air guide end is located on the side of the second air guide end away from the air outlet, when the air in the air duct flows through the air guide plate between the first air guide end and the first cross-section, the air guide plate can guide the air to deflect towards the direction close to the volute, thereby guiding at least part of the air to deviate from the preset flow path and flow towards the damper plate.

[0057] When air flows towards the damper, the damper can further change the direction of the airflow and discharge it from the air outlet. In this way, under the dual guiding effect of the damper and the air guide plate, the air delivery angle of the indoor unit of the air conditioner can be made larger.

[0058] Optionally, the air guide plate is an arc-shaped plate, with the first air guide end and the second air guide end located at both ends of the arc direction of the arc-shaped plate. The inner arc surface of the arc-shaped plate faces the air duct, and the second air guide end is spliced ​​with the volute tongue expansion surface so that the inner arc surface of the air guide plate and the volute tongue expansion surface form a first vortex surface. The first vortex surface is used to guide the air at the air outlet to flow along the volute tongue expansion surface and the inner arc surface to form a vortex.

[0059] Because the second air guide end is spliced ​​with the volute tongue expansion surface, and the inner arc surface of the air guide plate and the volute tongue expansion surface form the first vortex surface, when the damper plate guides the air to the air outlet and is located near the first vortex surface, the air can form a vortex under the guiding action of the first vortex surface. During the rotation (in the direction of the arrow in the figure), the vortex can generate viscosity and rotational inertia, so that the air near the vortex can be further deflected under the action of the vortex, thereby achieving the purpose of further increasing the air supply angle of the indoor unit of the air conditioner.

[0060] Optionally, the variable air supply mode further includes a second variable air supply mode. When the indoor unit of the air conditioner is in the second variable air supply mode, the first air guide end of the air guide plate is located on the side of the first cross-section away from the volute, and the second air guide end of the air guide plate is located on the side of the first cross-section close to the volute. The first air guide end and the second air guide end are the two ends of the air guide plate along the extension direction of the air duct, and the first air guide end is located on the side of the second air guide end away from the air outlet. The air guide plate between the second air guide end and the first cross-section is used to change the airflow direction.

[0061] When the air guide plate between the second air guide end and the first cut surface invades the preset flow path, the deflection angle of the airflow direction it brings is exactly the opposite of the deflection angle of the airflow direction brought by the air guide plate between the first air guide end and the first cut surface invading the preset flow path. With this setting, the total deflection angle can be approximately the difference between the two, thus further increasing the air supply angle of the indoor unit of the air conditioner.

[0062] Optionally, the damper plate has a first damper end and a second damper end opposite to each other along the extension direction of the air duct. The first damper end is located inside the air duct and on the side of the second cross-section close to the volute tongue. The second damper end is located outside the air outlet. The damper plate between the first damper end and the second cross-section is used to guide at least part of the air to deviate from the preset flow path and flow towards the air guide plate.

[0063] With this configuration, under the guidance of the damper plate between the first damper end and the second cut surface, a large amount of air can be directed to deflect towards the direction closer to the air guide plate, which in turn helps the air guide plate to direct more air and thus improves the utilization rate of the air volume of the indoor unit of the air conditioner.

[0064] Optionally, the damper plate includes:

[0065] The first airlock section; and,

[0066] The second damper section, the first damper section and the second damper section are arranged along the extension direction of the air duct and connected to each other. The first damper end is located at the end of the first damper section away from the second damper section, and the second damper end is located at the end of the second damper section away from the first damper section. The second damper section has a second vortex surface facing the air duct. The second vortex surface is used to guide the air at the air outlet to flow along the second vortex surface to form a vortex.

[0067] Because the second damper section has a second vortex surface facing the air duct, when air flows out of the air outlet and passes near the second damper section, the vortex formed by the air under the guidance of the second vortex surface has greater viscosity and rotational inertia. This allows the vortex to further deflect the nearby air, thereby further increasing the air supply angle of the indoor air conditioning unit.

[0068] Optionally, the curvature of the second damper section is greater than the curvature of the first damper section.

[0069] By making the curvature of the first damper section smaller, wind resistance can be reduced to a certain extent, thereby making the air flow more smoothly in the duct.

[0070] Thirdly, this application discloses an air conditioner, including the indoor unit of the air conditioner described in either the first or second aspect above.

[0071] Because the indoor unit of an air conditioner can deliver air at a wide angle, when an air conditioner includes an indoor unit, it can also deliver air at a wide angle, resulting in a better user experience.

[0072] Compared with the prior art, the beneficial effects of this application are as follows:

[0073] In this application, since the air guide plate is movably installed within the air duct, it can change the airflow direction when it moves to different angles, thereby achieving the purpose of adjusting the air delivery direction. Furthermore, because the air guide plate is built into the indoor unit of the air conditioner, compared to related technologies where the air guide plate is placed externally outside the indoor unit, there is no need to design the air guide plate to be smaller due to aesthetic and outlet size limitations. In other words, when the air guide plate is built into the indoor unit, its size can be designed to be larger, thus improving its ability to adjust the air delivery direction and allowing the indoor unit to deliver air at a wider angle.

[0074] Furthermore, since the damper plate is movable and used to close or open the air outlet, it can function as both. In addition, because the damper plate is movable relative to the air outlet, it can also work in conjunction with the air guide plate to further change the airflow direction. This design, on the one hand, allows the damper plate to not only close or open the air outlet but also work with the air guide plate to change the airflow direction, making it multi-functional and reducing the number of components in the indoor unit, thus minimizing its size. On the other hand, because the damper plate also works with the air guide plate to change the airflow direction, it can further alter the airflow direction on top of the air guide plate's ability to do so. Therefore, the dual action of the damper plate and the air guide plate further enhances the indoor unit's ability to adjust the airflow direction, allowing it to easily achieve wide-angle airflow. Attached Figure Description

[0075] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0076] Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit according to an embodiment of this application;

[0077] Figure 2 yes Figure 1 A structural schematic diagram of the indoor unit of an air conditioner from another perspective;

[0078] Figure 3 yes Figure 2 A cross-sectional view of the indoor air conditioner unit at position AA;

[0079] Figure 4 yes Figure 1 A schematic diagram of the structure of an indoor air conditioner unit when the air outlet is open;

[0080] Figure 5 yes Figure 4 A structural schematic diagram of the indoor unit of an air conditioner from another perspective;

[0081] Figure 6 yes Figure 3 A cross-sectional view of the indoor unit of the air conditioner at position AA after the air outlet is opened;

[0082] Figure 7 yes Figure 6 A magnified view of the indoor unit of the air conditioner at position B (with additional airflow direction);

[0083] Figure 8 yes Figure 6 A schematic diagram of the structure of a central air conditioning indoor unit after the air guide plate has been moved to a certain angle;

[0084] Figure 9 yes Figure 8 A magnified view of the indoor unit of the air conditioner at position C (with additional airflow direction);

[0085] Figure 10 yes Figure 9 A schematic diagram of the structure of a central air conditioning indoor unit after the air guide plate has been moved to a certain angle;

[0086] Figure 11 yes Figure 10 A magnified view of the indoor unit of the air conditioner at position D (with additional airflow direction);

[0087] Figure 12 yes Figure 11 Schematic diagram of the structure of the stroke door panel;

[0088] Figure 13 This is a schematic diagram of another damper plate provided in one embodiment of this application;

[0089] Figure 14 This is a schematic diagram of the structure of another damper plate provided in an embodiment of this application;

[0090] Figure 15 This is a schematic diagram of the structure of an air conditioner provided in one embodiment of this application.

[0091] Explanation of main figure symbols

[0092] 1-Casing; 11-Air inlet; 12-Air outlet;

[0093] 2- Fan;

[0094] 3-Heat exchanger;

[0095] 4-Air duct system; 41-Volume; 411-Volume guide section; 4111-Volume guide surface; 412-Volume expansion section; 4121-Volume expansion surface; 42-Volume tongue; 421-Volume tongue guide section; 4211-Volume tongue guide surface; 422-Volume tongue expansion section; 4221-Volume tongue expansion surface; 4221a-Third edge; 43-Air guide plate; 44-Damper plate; 443-First damper section; 444-Second damper section; 4441-Second vortex surface; 4442-Material shortage section;

[0096] 10 - Internal space; 20 - Air duct; 30 - First edge; 40 - First cross-section; 50 - Expansion chamber; 60 - Second edge; 70 - Second cross-section; 80 - First vortex surface;

[0097] 100 - Indoor unit of air conditioner; 200 - Air conditioner; 300 - Outdoor unit of air conditioner;

[0098] W - Preset flow path. Detailed Implementation

[0099] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0100] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0101] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0102] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0103] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0104] Before explaining the technical solution of this application, the background technology of this application shall be explained first.

[0105] Considering that people often need to change the airflow direction of the indoor unit when using it, related technologies usually install an air guide plate on the outside of the indoor unit and place it close to the air outlet. In this way, the airflow direction can be adjusted by changing the direction of the air guide plate.

[0106] However, due to structural limitations and aesthetic considerations, the air guide vanes installed outside the indoor unit of an air conditioner are usually small in size and have limited rotation angles. This limits the vanes' ability to adjust the airflow direction, thus preventing the indoor unit from delivering air at large angles. Therefore, this application provides a novel indoor unit for air conditioning to address these problems.

[0107] The technical solution of this application will be described below with reference to the embodiments and accompanying drawings.

[0108] Figure 1 This is a structural schematic diagram of an air conditioner indoor unit 100 provided in one embodiment of this application. See also: Figure 1 , an indoor air conditioning unit 100, including a casing 1.

[0109] The shape of the housing 1 can be a cylinder, cuboid, or cube, etc., and this embodiment does not limit this. The material of the housing 1 can be plastic or metal, etc., and this embodiment does not limit the material of the housing 1.

[0110] Figure 2 yes Figure 1 A structural schematic diagram of the indoor unit 100 of the air conditioner from another perspective. Figure 3 yes Figure 2 See the cross-sectional view of the indoor unit 100 of the air conditioner at position AA. Figure 2 and Figure 3 The casing 1 is arranged to form an internal space 10.

[0111] The shape of the aforementioned internal space 10 can be a cuboid, a cube, or other irregular shapes, and this embodiment does not limit this.

[0112] When the casing 1 forms an internal space 10, the internal space 10 can be used to house various components of the air conditioner indoor unit 100, and can also be used as a place for heat exchange, providing structural protection for the normal operation of the air conditioner indoor unit 100.

[0113] In some embodiments, see Figure 4 and Figure 5 , Figure 4 yes Figure 1 A schematic diagram of the structure of the indoor unit 100 of the air conditioner when the air outlet 12 is open. Figure 5 yes Figure 4 The diagram shows the structure of the indoor unit 100 of the air conditioner from another perspective. The casing 1 is provided with an air inlet 11 and an air outlet 12 that communicate with the internal space 10.

[0114] This configuration allows indoor air to enter the interior space 10 through the air inlet 11 for heat exchange. Air in the interior space 10 can also be exhausted through the air outlet 12, allowing the heat-exchanged air to be discharged.

[0115] The shapes of the air inlet 11 and the air outlet 12 can be rectangular, square or other irregular shapes, and this embodiment does not limit them.

[0116] It should be noted that, see Figure 4 and Figure 5 The aforementioned air inlet 11 can be located on the upper surface of the housing 1. Figure 5 The upper surface of the housing 1 and the air outlet 12 can be located on the lower surface of the housing 1. Figure 4 (The lower surface of the housing 1). Of course, the air inlet 11 can also be set on the lower surface of the housing 1 and the air outlet 12 can be set on the upper surface of the housing 1. That is, the air inlet 11 and the air outlet 12 can be set at any position of the housing 1. This embodiment does not limit this.

[0117] It should also be noted that the upper surface of the casing 1 refers to the side facing the roof when the air conditioner indoor unit 100 is installed on the wall or roof, and the lower surface of the casing 1 refers to the side facing downwards when the air conditioner indoor unit 100 is installed on the wall or roof.

[0118] In some embodiments, see Figure 3The indoor unit 100 of the air conditioner also includes a fan 2, which is located in the internal space 10 and is used to draw air from outside the casing 1 into the internal space 10 through the air inlet 11.

[0119] The fan 2 can be cylindrical or other possible shapes, and this embodiment does not limit this.

[0120] Since the fan 2 can draw air from outside the casing 1 into the internal space 10 through the air inlet 11, it can prepare for subsequent heat exchange of the air in the internal space 10.

[0121] In some embodiments, see Figure 3 The indoor unit 100 of the air conditioner also includes a heat exchanger 3, which is disposed in the internal space 10 and is used for heat exchange of the air drawn into the internal space 10.

[0122] Since the heat exchanger 3 can exchange heat with the air drawn into the internal space 10, when the air after heat exchange is blown out of the internal space 10 and enters the room, it can achieve the purpose of cooling or heating the room.

[0123] In some embodiments, see Figure 3 , Figure 6 and Figure 7 , Figure 6 yes Figure 3 A cross-sectional view of the indoor unit 100 of the air conditioner at position AA after the air outlet 12 is opened. Figure 7 yes Figure 6 The image shows a partial enlarged view of the indoor unit 100 of the air conditioner at position B (with additional airflow direction). The indoor unit 100 also includes a duct system 4, which includes a volute 41 and a volute tongue 42. The volute 41 is disposed in the internal space 10, and the volute tongue 42 is disposed in the internal space 10 and forms a duct 20 with the volute 41. One end of the duct 20 ( Figure 3 The upper end of the central duct 20 is connected to the air inlet 11, and the other end ( Figure 3 The lower end of the air duct 20 is connected to the air outlet 12. The fan 2 is also used to blow the heat-exchanged air out of the internal space 10 along the air duct 20 through the air outlet 12. Figure 7 (Mid-state).

[0124] Since a duct 20 is formed between the volute tongue 42 and the volute shell 41, and since one end of the duct 20 is connected to the air inlet 11 and the other end is connected to the air outlet 12, after the heat exchanger 3 exchanges heat with the air drawn into the internal space 10, the fan 2 can blow the heat-exchanged air out of the internal space 10 along the duct 20 through the air outlet 12, thereby achieving the purpose of cooling or heating the room.

[0125] In some embodiments, see Figure 7 , Figure 8 and Figure 9 , Figure 8 yes Figure 6 A schematic diagram of the structure of the indoor unit 100 of a central air conditioner after the air guide plate 43 has been moved to a certain angle. Figure 9 yes Figure 8 The enlarged view of the indoor unit 100 of the air conditioner at position C (with additional airflow direction) shows that the air duct system 4 also includes an air guide plate 43, which is movably disposed in the air duct 20 to change the airflow direction.

[0126] Since the air guide plate 43 is movably disposed within the air duct 20, when the air guide plate 43 moves to different angles (e.g., from...), Figure 6 State of motion to Figure 8 (State) can change the airflow direction, thereby achieving the purpose of adjusting the air supply direction. In particular, since the air guide plate 43 is built into the indoor unit 100 of the air conditioner, compared with the related technology where the air guide plate 43 is placed outside the indoor unit 100 of the air conditioner, there is no need to design the size of the air guide plate 43 to be smaller due to considerations of aesthetics and air outlet size limitations. That is to say, when the air guide plate 43 is built into the indoor unit 100 of the air conditioner, the size of the air guide plate 43 can be designed to be larger. In this way, the ability of the air guide plate 43 to adjust the air supply direction can be improved, thereby enabling the indoor unit 100 of the air conditioner to supply air at a large angle.

[0127] Furthermore, in some embodiments, see Figure 3 and Figure 9 The air duct system 4 also includes a damper plate 44, which is movably disposed for closing ( Figure 3 (in medium state) or open ( Figure 9 (In the middle state) air outlet 12, the damper plate 44 is also used to change the airflow direction together with the air guide plate 43.

[0128] Since the damper plate 44 is movably configured to close or open the air outlet 12, it can function to close or open the air outlet 12. Furthermore, because the damper plate 44 is movably configured, by moving it relative to the air outlet 12, it can also cooperate with the air guide plate 43 to further change the airflow direction.

[0129] This design serves two purposes. First, in addition to opening or closing the air outlet 12, the damper plate 44 also functions in conjunction with the air guide plate 43 to change the airflow direction. This multi-functional design reduces the number of components in the indoor unit 100, thus minimizing its size. Second, because the damper plate 44 works with the air guide plate 43 to change the airflow direction, it further alters the airflow direction. Thus, the combined effect of the damper plate 44 and the air guide plate 43 enhances the indoor unit 100's ability to adjust the airflow direction, allowing it to easily achieve wide-angle airflow.

[0130] In some embodiments, see Figure 3 , Figure 6 and Figure 8 The indoor unit of the air conditioner includes a casing 1, a fan 2, a heat exchanger 3, and an air duct system 4. The casing 1 encloses an internal space 10. The casing 1 is provided with an air inlet 11 and an air outlet 12 that communicate with the internal space 10. The fan 2 is located in the internal space 10 and is used to draw air from outside the casing 1 into the internal space 10 through the air inlet 11. The heat exchanger 3 is located in the internal space 10 and is used to exchange heat with the air drawn into the internal space 10.

[0131] The air duct system 4 includes a volute 41, a volute tongue 42, an air guide plate 43, and an air damper plate 44. The volute 41 is disposed in the internal space 10, and the volute tongue 42 is disposed in the internal space 10 and forms an air duct 20 with the volute 41. One end of the air duct 20 is connected to the air inlet 11 and the other end is connected to the air outlet 12. The fan 2 is also used to blow the heat-exchanged air out of the internal space 10 along the air duct 20 through the air outlet 12. The air guide plate 43 is movably disposed in the air duct 20 to change the airflow direction. The air damper plate 44 is movably disposed to close or open the air outlet 12. The air damper plate 44 is also used to change the airflow direction together with the air guide plate 43.

[0132] In this embodiment, since the air guide plate 43 is movably disposed within the air duct 20, when the air guide plate 43 moves to different angles (e.g., Figure 3 and Figure 8In the middle state, the air guide plate 43 can change the airflow direction, thereby achieving the purpose of adjusting the air supply direction. Since the air guide plate 43 is built into the indoor unit 100 of the air conditioner, compared with the related technology where the air guide plate 43 is placed outside the indoor unit 100 of the air conditioner, there is no need to design the size of the air guide plate 43 to be smaller due to considerations of aesthetics and air outlet size limitations. That is to say, when the air guide plate 43 is built into the indoor unit 100 of the air conditioner, the size of the air guide plate 43 can be designed to be larger. In this way, the ability of the air guide plate 43 to adjust the air supply direction can be improved, thereby enabling the indoor unit 100 of the air conditioner to supply air at a large angle.

[0133] Furthermore, since the damper plate 44 is movably configured to close or open the air outlet 12, it can function to close or open the air outlet 12. In addition, because the damper plate 44 is movably configured, by moving the damper plate 44 relative to the air outlet 12, it can also cooperate with the air guide plate 43 to further change the airflow direction.

[0134] This design serves two purposes. First, in addition to opening or closing the air outlet 12, the damper plate 44 also functions in conjunction with the air guide plate 43 to change the airflow direction. This multi-functional design reduces the number of components in the indoor unit 100, thus minimizing its size. Second, because the damper plate 44 works with the air guide plate 43 to change the airflow direction, it further alters the airflow direction. Thus, the combined effect of the damper plate 44 and the air guide plate 43 enhances the indoor unit 100's ability to adjust the airflow direction, allowing it to easily achieve wide-angle airflow.

[0135] In some embodiments, see Figure 9 The air guide plate 43 is movably disposed within the air duct 20 and is configured such that at least a portion of its structure can move onto a preset airflow path W to change the direction of at least a portion of the airflow.

[0136] Since at least a portion of the structure of the air guide plate 43 can move onto the preset airflow path W, when the air flows along the preset airflow path W, the air will collide with at least a portion of the structure of the air guide plate 43, and the air guide plate 43 will cause at least a portion of the air to deviate from the preset airflow path W, thereby achieving the purpose of adjusting the flow direction of at least a portion of the air.

[0137] Since the air guide plate 43 is built into the indoor unit 100 of the air conditioner, compared with the method of placing the air guide plate 43 outside the indoor unit 100 of the air conditioner in related technologies, there is no need to design the size of the air guide plate 43 to be smaller due to considerations of aesthetics and air outlet size limitations. That is to say, when the air guide plate 43 is built into the indoor unit 100 of the air conditioner, the size of the air guide plate 43 can be designed to be larger. In this way, the ability of the air guide plate 43 to adjust the air supply direction can be improved, thereby enabling the indoor unit 100 of the air conditioner to supply air at a large angle.

[0138] In some embodiments, see Figure 3 and Figure 6 The damper plate 44 is movably configured to move to close or open the air outlet 12, see [reference]. Figure 9 It is also used to move such that at least part of the structure is downstream of the air guide plate 43, so as to continue to change the direction of airflow.

[0139] Since the damper plate 44 can be positioned downstream of the air guide plate 43 when it moves, after the air guide plate 43 changes the airflow direction, the airflow direction will be changed and flow to the damper plate 44. In this way, the damper plate 44 can continue to change the airflow direction on the basis of the air guide plate 43 changing the airflow direction. That is, the damper plate 44 can also work together with the air guide plate 43 to further change the airflow direction.

[0140] This design serves two purposes. First, in addition to opening or closing the air outlet 12, the damper plate 44 also functions in conjunction with the air guide plate 43 to change the airflow direction. This multi-functional design reduces the number of components in the indoor unit 100, thus minimizing its size. Second, because the damper plate 44 can further alter the airflow direction on top of the change made by the air guide plate 43, the combined effect of the damper plate 44 and the air guide plate 43 further enhances the ability of the indoor unit 100 to adjust the airflow direction, allowing it to easily achieve large-angle airflow.

[0141] In some embodiments, see Figure 7 and Figure 9 The volute tongue 42 includes a volute tongue guide section 421 and a volute tongue expansion section 422. The volute tongue guide section 421 has a volute tongue guide surface 4211 facing the air duct 20. The volute tongue guide surface 4211 is used to guide air to flow along a preset flow path W.

[0142] The volute tongue guide section 421 and the volute tongue expansion section 422 are arranged along the extension direction of the air duct 20 and are connected to each other. The volute tongue expansion section 422 is located on the side of the volute tongue guide section 421 near the air outlet 12. The volute tongue expansion section 422 has a volute tongue expansion surface 4221 facing the air duct 20. The intersection of the volute tongue expansion surface 4221 and the volute tongue guide surface 4211 forms a first edge 30. The surface that passes through the first edge 30 and is tangent to the volute tongue guide surface 4211 is the first tangent surface 40.

[0143] The spiracular tongue expansion surface 4221 is recessed on the side of the first cut surface 40 away from the volute shell 41. Figure 7 The volute tongue expansion surface 4221 is located on the upper right side of the first cut surface 40, so that the volute tongue expansion surface 4221 and the first cut surface 40 enclose an expansion chamber 50. The air guide plate 43 can move into the expansion chamber 50, or at least part of the air guide plate 43 can move out of the expansion chamber 50 so that at least part of the air guide plate 43 is located in the preset flow path W.

[0144] Because the volute tongue expansion surface 4221 is recessed on the side of the first cut surface 40 away from the volute shell 41, and because the volute tongue expansion surface 4221 and the first cut surface 40 enclose an expansion chamber 50, when the air guide plate 43 can move into the expansion chamber 50, the air guide plate 43 will not intrude into the preset flow path W. When the air guide plate 43 does not intrude into the preset flow path W, the air guide plate 43 will not interfere with the airflow direction; therefore, the air can flow along the preset flow path W. Figure 7 (Mid-state).

[0145] When part of the air guide plate 43 moves outside the expansion chamber 50, the air guide plate 43 will block at least part of the air from continuing to flow along the preset flow path W, and under the guiding action of the air guide plate 43, the air will deviate from the preset flow path W. Figure 9 In the middle state, it can thus achieve the purpose of regulating the airflow direction.

[0146] By setting the volute tongue expansion surface 4221, the volute tongue expansion surface 4221 is recessed into the side of the first tangent surface 40 away from the volute 41, and the volute tongue expansion surface 4221 and the first tangent surface 40 enclose and form an expansion chamber 50. When there is no need to change the airflow direction, it is only necessary to move the air guide plate 43 into the expansion chamber 50. When it is necessary to change the airflow direction, it is only necessary to move part of the air guide plate 43 out of the expansion chamber 50. The principle is very simple and can reduce the cost of the air conditioner indoor unit 100.

[0147] The expansion chamber 50 can accommodate the air guide plate 43.

[0148] It should be noted that there are multiple ways to implement the above-mentioned air guide plate 43 being movably disposed in the air duct 20. In one possible implementation, the air guide plate 43 can be rotatably disposed in the air duct 20 around a pivot. Of course, it can also be slidably disposed in the air duct 20. This embodiment does not limit this.

[0149] In some embodiments, see Figure 7 and Figure 9 The volute 41 includes a volute guide section 411 and a volute expansion section 412. The volute guide section 411 has a volute guide surface 4111 facing the air duct 20. The volute guide surface 4111 is used to guide the air along the preset flow path W together with the volute tongue guide surface 4211. The volute guide section 411 and the volute expansion section 412 are arranged along the extension direction of the air duct 20 and are connected to each other. The volute expansion section 412 is located on the side of the volute guide section 411 near the air outlet 12. The volute expansion section 412 has a volute expansion surface 4121 facing the air duct 20. The intersection of the volute expansion surface 4121 and the volute guide surface 4111 forms a second edge 60. The surface passing through the second edge 60 and tangent to the volute guide surface 4111 is the second tangent surface 70.

[0150] The volute expansion surface 4121 is recessed on the side of the second sectional surface 70 away from the volute tongue 42, and at least a portion of the structure of the damper plate 44 is movable to the side of the second sectional surface 70 away from the volute tongue 42.

[0151] Since at least a portion of the damper plate 44 can move to the side of the second sectional surface 70 opposite to the volute tongue 42, it can reduce air resistance to a certain extent. On the one hand, this can increase the air volume of the indoor unit 100 to a certain extent. On the other hand, it can also make the airflow of the indoor unit 100 smoother.

[0152] In some embodiments, see Figure 6 and Figure 7 The indoor unit 100 of the air conditioner has a directional air supply mode. When the indoor unit 100 of the air conditioner is in the directional air supply mode ( Figure 7 In the middle state), the air guide plate 43 moves to the side of the first cut surface 40 away from the volute 41, and at least a part of the structure of the damper plate 44 moves to the side of the second cut surface 70 away from the volute tongue 42.

[0153] This configuration allows the air guide plate 43 and the damper plate 44 to minimize their impact on the airflow direction. Consequently, the airflow direction is primarily determined by the volute guide surface 4111 and the volute tongue guide surface 4211. Under the combined guidance of the volute guide surface 4111 and the volute tongue guide surface 4211, the airflow follows the preset flow path W, resulting in a stronger airflow in the indoor unit 100 of the air conditioner, thus enabling long-distance air delivery.

[0154] In some embodiments, the air guide plate 43 has a first air guide end along the extension direction of the air duct 20. Figure 7 The upper left end of the middle air guide plate 43 and the second air guide end ( Figure 7 The lower right end of the middle air guide plate 43, the first air guide end and / or the second air guide end are located on the first cut surface 40.

[0155] By positioning the first air guide end and / or the second air guide end on the first cross-section 40, the first air guide end and / or the second air guide end can also guide the flow of air along the preset flow path W, so that the air can flow better along the preset flow path W, thereby making the air flow path more regular.

[0156] In some embodiments, see Figure 7 First air guide end ( Figure 7 The upper left end of the middle air guide plate 43 is spliced ​​with the first edge 30.

[0157] When the first air guide end is spliced ​​with the first edge 30, the first air guide end and the first edge 30 can be relatively smooth and there will be no gap, which can reduce wind resistance.

[0158] In some embodiments, see Figure 7 The volute tongue expansion surface 4221 has a third edge 4221a that is away from the first edge 30, and the third edge 4221a is located on the side of the first tangent surface 40 away from the volute shell 41.

[0159] Since the third edge 4221a is located on the side of the first tangent 40 away from the volute 41, the third edge 4221a will not intrude into the preset flow path W, so that the air resistance is smaller and smoother when it flows along the preset flow path W.

[0160] In some embodiments, the damper plate 44 has opposing first damper ends along the extending direction of the air duct 20. Figure 7 The upper left end of the middle air damper panel 44 and the second air damper end ( Figure 7 The lower right end of the central damper panel 44, the first damper end and / or the second damper end are located on the second cut surface 70.

[0161] By positioning the first damper end and / or the second damper end on the second sectional surface 70, the first damper end and / or the second damper end can also guide the airflow along the preset flow path W, allowing the air to flow better along the preset flow path W, thereby making the airflow path more regular.

[0162] In some embodiments, see Figure 7 The first damper end is spliced ​​with the second edge at 60°.

[0163] When the first damper end and the second edge 60 are spliced ​​together, the connection between the first damper end and the second edge 60 is smooth and there will be no gap, which can reduce wind resistance.

[0164] In some embodiments, see Figure 8 and Figure 9 The indoor unit 100 of the air conditioner has a reverse air supply mode. When the indoor unit 100 of the air conditioner is in the reverse air supply mode, at least part of the air guide plate 43 moves to the side of the first sectional surface 40 near the volute 41 to guide at least part of the air to deviate from the preset flow path W and flow to the damper plate 44. The damper plate 44 is used to continue to change the direction of air flow.

[0165] Since at least a portion of the air guide vanes 43 can move to the side of the first cut surface 40 near the volute 41, when at least a portion of the air guide vanes 43 move to the side of the first cut surface 40 near the volute 41, a portion of the air guide vanes 43 will intrude into the preset flow path W. In this way, the air flowing to the air guide vanes 43 will deviate from the preset flow path W and flow towards the damper plate 44 under the guidance of the air guide vanes 43. When the air flows towards the damper plate 44, the damper plate 44 can continue to change the airflow direction, thereby achieving the purpose of adjusting the air supply direction, so that the indoor unit 100 of the air conditioner has the function of adjusting the air supply direction, resulting in a better user experience.

[0166] In some embodiments, see Figure 9 The variable air supply mode includes the first variable air supply mode. When the indoor unit 100 of the air conditioner is in the first variable air supply mode, the first air guide end of the air guide plate 43 ( Figure 9 The upper left end of the middle air guide plate 43 is located on the side of the first cut surface 40 close to the volute 41. The second air guide end of the air guide plate 43 is located on the side of the first cut surface 40 away from the volute 41. The first air guide end and the second air guide end are the two ends of the air guide plate 43 along the extension direction of the air duct 20, and the first air guide end is located on the side of the second air guide end away from the air outlet 12. The air guide plate 43 between the first air guide end and the first cut surface 40 is used to guide at least part of the air to deviate from the preset flow path W and flow to the damper plate 44.

[0167] Since the first air guide end of the air guide plate 43 is located on the side of the first cross-section 40 close to the volute 41, and since the first air guide end is located on the side of the second air guide end away from the air outlet 12, when the air in the air duct 20 flows through the air guide plate 43 between the first air guide end and the first cross-section 40, the air guide plate 43 can guide the air to deflect towards the volute 41, thereby guiding at least part of the air to deviate from the preset flow path W and flow towards the damper plate 44.

[0168] When air flows towards the damper plate 44, the damper plate 44 can further change the direction of airflow and discharge it from the air outlet 12. In this way, under the dual guiding effect of the damper plate 44 and the air guide plate 43, the air delivery angle of the indoor unit 100 of the air conditioner can be made larger.

[0169] Among them, with Figure 9 Taking the state of the indoor unit 100 of the air conditioner as an example, the first variable air supply mode mentioned above can be understood as the upward air supply mode.

[0170] Of course, depending on the type of indoor air unit 100 and the installation method, the above-mentioned first variable air supply mode can also be understood as a downward air supply mode, a left air supply mode, and a right air supply mode, etc. This embodiment does not limit this.

[0171] In some embodiments, see Figure 9 The air guide plate 43 is an arc-shaped plate, with the first and second air guide ends located at the two ends of the arc direction of the arc-shaped plate. The inner arc surface of the arc-shaped plate faces the air duct 20, and the second air guide end ( Figure 9 The upper right end of the middle air guide plate 43 is spliced ​​with the volute tongue expansion surface 4221 so that the inner arc surface of the air guide plate 43 and the volute tongue expansion surface 4221 form a first vortex surface 80. The first vortex surface 80 is used to guide the air at the air outlet 12 to flow along the volute tongue expansion surface 4221 and the inner arc surface to form a vortex.

[0172] Because the second air guide end is spliced ​​with the volute tongue expansion surface 4221, and the inner arc surface of the air guide plate 43 forms a first vortex surface 80 with the volute tongue expansion surface 4221, when the damper plate 44 guides the air to the air outlet 12 and it is located near the first vortex surface 80, the air can form a vortex under the guiding action of the first vortex surface 80, and the vortex rotates ( Figure 9 During the process (in the direction of the middle arrow), viscosity and rotational inertia can be generated, which allows the air near the vortex to be further deflected under the action of the vortex, thereby achieving the purpose of further increasing the air supply angle of the indoor unit 100 of the air conditioner.

[0173] In some embodiments, the variable air supply mode further includes a second variable air supply mode. When the indoor unit 100 of the air conditioner is in the second variable air supply mode, see [link to relevant documentation]. Figure 10 and Figure 11 , Figure 10 yes Figure 9 A schematic diagram of the structure of the indoor unit 100 of a central air conditioner after the air guide plate 43 has been moved to a certain angle. Figure 11 yes Figure 10 A partial enlarged view of the indoor unit 100 of the air conditioner at position D (with additional airflow direction), showing the first air guide end of the air guide plate 43. Figure 11 The upper left end of the middle air guide plate 43 is located on the side of the first cut surface 40 away from the volute 41, and the second air guide end of the air guide plate 43 ( Figure 11The lower right end of the middle air guide plate 43 is located on the side of the first cut surface 40 near the volute 41. The first air guide end and the second air guide end are the two ends of the air guide plate 43 along the extension direction of the air duct 20, and the first air guide end is located on the side of the second air guide end away from the air outlet 12. The air guide plate 43 between the second air guide end and the first cut surface 40 is used to change the airflow direction.

[0174] Since the first air guide end and the second air guide end are the two ends of the air guide plate 43 along the extension direction of the air duct 20, and the first air guide end is located on the side of the second air guide end away from the air outlet 12, the second air guide end will be located on the side closer to the air outlet 12. Then, since the second air guide end of the air guide plate 43 is located on the side of the first cross-section 40 close to the volute 41, the air guide plate 43 between the second air guide end of the air guide plate 43 and the first cross-section 40 will invade the preset flow path W.

[0175] When the air guide plate 43 between the second air guide end and the first cut surface 40 intrudes into the preset flow path W, the air guide plate 43 can change the direction of air flow.

[0176] Specifically, when the air guide plate 43 between the second air guide end and the first cut surface 40 invades the preset flow path W, the deflection angle of the airflow direction it brings is exactly the opposite of the deflection angle of the airflow direction brought by the air guide plate 43 between the first air guide end and the first cut surface 40 invading the preset flow path W. With this setting, the total deflection angle can be approximately the difference between the two, thus further increasing the air supply angle of the indoor unit 100 of the air conditioner.

[0177] Since the deflection angle of the airflow direction caused by the air guide plate 43 between the second air guide end and the first cut surface 40 intruding into the preset flow path W is exactly opposite to the deflection angle of the airflow direction caused by the air guide plate 43 between the first air guide end and the first cut surface 40 intruding into the preset flow path W, the second deflection airflow mode can be understood as the downward airflow mode when the first deflection airflow mode is the upward airflow mode.

[0178] In some embodiments, see Figure 11 The damper plate 44 has a first damper end along the extension direction of the air duct 20. Figure 11 The upper left end of the middle air damper panel 44 and the second air damper end ( Figure 11 The lower right end of the damper plate 44 is located inside the air duct 20 and on the side of the second cut surface 70 near the volute tongue 42. The second damper end is located outside the air outlet 12. The damper plate 44 between the first damper end and the second cut surface 70 is used to guide at least part of the air away from the preset flow path W to the air guide plate 43.

[0179] With this configuration, under the guidance of the damper plate 44 between the first damper end and the second cut surface 70, a large amount of air can be directed to deflect towards the direction close to the air guide plate 43, which in turn helps the air guide plate 43 to guide more air, thereby improving the utilization rate of the air volume of the indoor unit 100 of the air conditioner.

[0180] In some embodiments, see Figure 11 and Figure 12 , Figure 12 yes Figure 11 The schematic diagram of the structure of the damper plate 44 shows that the damper plate 44 is an arc-shaped plate. The first damper end and the second damper end are located at the two ends of the arc direction of the arc plate, and the inner arc surface of the arc plate faces the air duct 20.

[0181] Because the damper plate 44 is an arc-shaped plate, and because the inner arc surface of the arc-shaped plate faces the air duct 20, when air flows out of the air outlet 12 and passes near the damper plate 44, the air can form a vortex under the guiding action of the damper plate 44, and the vortex rotates ( Figure 11 During the process (in the direction of the middle arrow), viscosity and rotational inertia can be generated, which allows the air near the vortex to be further deflected under the action of the vortex, thereby achieving the purpose of further increasing the air supply angle of the indoor unit 100 of the air conditioner.

[0182] In some embodiments, see Figure 11 and Figure 12 The damper plate 44 includes a first damper section 443 and a second damper section 444, wherein the first damper section 443 and the second damper section 444 are arranged along the extension direction of the air duct 20 and are connected to each other. The first damper end is located at the end of the first damper section 443 away from the second damper section 444, and the second damper end is located at the end of the second damper section 444 away from the first damper section 443. The second damper section 444 has a second vortex surface 4441 facing the air duct 20. The second vortex surface 4441 is used to guide the air at the air outlet 12 to flow along the second vortex surface 4441 to form a vortex.

[0183] Since the second damper section 444 has a second vortex surface 4441 facing the air duct 20, when air flows out of the air outlet 12 and passes near the second damper section 444, the vortex formed by the air under the guidance of the second vortex surface 4441 has greater viscosity and rotational inertia. This allows the vortex to further deflect the nearby air, thereby further increasing the air supply angle of the indoor air conditioning unit 100.

[0184] Of course, in other embodiments, see Figure 13 , Figure 13This is a schematic diagram of another damper plate 44 provided in one embodiment of this application. The damper plate 44 can also be a flat plate structure, and this embodiment does not limit it to this.

[0185] In some embodiments, the curvature of the second damper section 444 is greater than the curvature of the first damper section 443.

[0186] By making the curvature of the first damper section 443 smaller, the wind resistance can be reduced to a certain extent, thereby making the air flow more smoothly in the duct 20.

[0187] To ensure a smoother connection between the damper plate 44 and the housing 1 when the air outlet 12 is closed, in some embodiments, see [reference needed]. Figure 14 , Figure 14 This is a schematic diagram of the structure of another damper plate 44 provided in an embodiment of this application. A material shortage part 4442 is provided on the surface of the second damper section 444 opposite to the inner arc surface. The material shortage part 4442 extends through the end of the second damper ( Figure 14 (Lower right end of the middle damper plate 44) When the air outlet 12 is closed by the damper plate 44, part of the structure of the housing 1 is located in the material shortage part 4442. The surface of the second damper section 444 opposite to the inner arc surface smoothly transitions with the outer surface of the housing 1. This setting can make the joint between the damper plate 44 and the housing 1 smoother, thereby improving the appearance of the air conditioner indoor unit 100.

[0188] Figure 15 This is a schematic diagram of the structure of an air conditioner 200 provided in one embodiment of this application. See also: Figure 15 The air conditioner includes an indoor unit 100.

[0189] The structure of the air conditioner indoor unit 100 can be the same as that of any of the air conditioner indoor units 100 described in the above embodiments, and can bring the same or similar beneficial effects. For details, please refer to the description of the air conditioner indoor unit 100 in the above embodiments. This embodiment will not repeat the description here.

[0190] In this embodiment, since the indoor unit 100 of the air conditioner can deliver air at a large angle, when the air conditioner 200 includes the indoor unit 100, the air conditioner 200 can also deliver air at a large angle, resulting in a better user experience.

[0191] In some embodiments, see Figure 15 The air conditioner 200 includes an outdoor unit 300 and an indoor unit 100, with the outdoor unit 300 and the indoor unit 100 connected together.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An air conditioner indoor unit (100), characterized in that, include: The housing (1) is provided with an internal space (10) and an air inlet (11) and an air outlet (12) communicating with the internal space (10). A fan (2) is disposed in the internal space (10) for drawing air from outside the housing (1) into the internal space (10) through the air inlet (11); Heat exchanger (3), the heat exchanger (3) is disposed in the internal space (10) for heat exchange of the air drawn into the internal space (10); as well as, Air duct system (4), the air duct system (4) includes: A volute (41) is disposed in the internal space (10); The volute tongue (42) is disposed in the internal space (10) and forms an air duct (20) between it and the volute shell (41). One end of the air duct (20) is connected to the air inlet (11) and the other end is connected to the air outlet (12). The fan (2) is also used to blow the heat-exchanged air out of the internal space (10) along the air duct (20) and through the air outlet (12). Air guide plate (43), which is movably disposed in the air duct (20) to change the direction of airflow; A damper plate (44) is movably provided for closing or opening the air outlet (12). The damper plate (44) is also used together with the air guide plate (43) to change the direction of airflow.

2. An air conditioner indoor unit (100), characterized in that, include: The housing (1) is provided with an internal space (10) and an air inlet (11) and an air outlet (12) communicating with the internal space (10). A fan (2) is disposed in the internal space (10) for drawing air from outside the housing (1) into the internal space (10) through the air inlet (11); Heat exchanger (3), the heat exchanger (3) is disposed in the internal space (10) for heat exchange of the air drawn into the internal space (10); as well as, Air duct system (4), the air duct system (4) includes: A volute (41) is disposed in the internal space (10); The volute tongue (42) is disposed in the internal space (10) and forms an air duct (20) between it and the volute shell (41). One end of the air duct (20) is connected to the air inlet (11) and the other end is connected to the air outlet (12). The fan (2) is also used to blow the heat-exchanged air out of the internal space (10) along the air duct (20) and through the air outlet (12). Air guide plate (43), which is movably disposed in the air duct (20) and configured such that at least a portion of its structure can move onto a preset airflow path (W) to change the direction of at least a portion of the airflow; A damper plate (44) is movably configured to move to close or open the air outlet (12) and to move such that at least a portion of the structure is located downstream of the air guide plate (43) to further change the direction of the airflow.

3. The air conditioner indoor unit (100) according to claim 1 or 2, characterized in that, The cochlear tongue (42) includes: A volute tongue guide section (421) having a volute tongue guide surface (4211) facing the air duct (20), the volute tongue guide surface (4211) being used to guide the airflow along a predetermined flow path (W); and, The volute tongue expansion section (422) and the volute tongue guide section (421) are arranged and connected to each other along the extension direction of the air duct (20). The volute tongue expansion section (422) is located on the side of the volute tongue guide section (421) closer to the air outlet (12). The volute tongue expansion section (422) has a volute tongue expansion surface (4221) facing the air duct (20). The intersection of the volute tongue expansion surface (4221) and the volute tongue guide surface (4211) forms a first edge (30). The surface that passes through the first edge (30) and is tangent to the volute tongue guide surface (4211) is the first tangent surface (40). The volute tongue expansion surface (4221) is recessed on the side of the first cut surface (40) away from the volute shell (41) so that the volute tongue expansion surface (4221) and the first cut surface (40) enclose an expansion chamber (50). The air guide plate (43) can move into the expansion chamber (50), or at least part of the air guide plate (43) can move outside the expansion chamber (50) so that at least part of the air guide plate (43) is located in the preset flow path (W).

4. The air conditioner indoor unit (100) according to claim 3, characterized in that, The volute (41) includes: A volute guide section (411) having a volute guide surface (4111) facing the air duct (20), the volute guide surface (4111) being used together with the volute tongue guide surface (4211) to guide the airflow along the preset flow path (W); and, The volute expansion section (412) and the volute guide section (411) are arranged and connected to each other along the extension direction of the air duct (20). The volute expansion section (412) is located on the side of the volute guide section (411) closer to the air outlet (12). The volute expansion section (412) has a volute expansion surface (4121) facing the air duct (20). The intersection of the volute expansion surface (4121) and the volute guide surface (4111) forms a second edge (60). The surface that passes through the second edge (60) and is tangent to the volute guide surface (4111) is the second tangent surface (70). The volute expansion surface (4121) is recessed on the side of the second cut surface (70) away from the volute tongue (42), and at least a portion of the structure of the damper plate (44) is movable to the side of the second cut surface (70) away from the volute tongue (42).

5. The air conditioner indoor unit (100) according to claim 4, characterized in that, The indoor unit (100) of the air conditioner has a directional air supply mode. When the indoor unit (100) of the air conditioner is in the directional air supply mode, the air guide plate (43) moves to the side of the first cross section (40) away from the volute (41), and at least a part of the structure of the damper plate (44) moves to the side of the second cross section (70) away from the volute tongue (42).

6. The air conditioner indoor unit (100) according to claim 5, characterized in that, The air guide plate (43) has a first air guide end and a second air guide end along the extension direction of the air duct (20), and the first air guide end and / or the second air guide end are located on the first cross-section (40).

7. The air conditioner indoor unit (100) according to claim 6, characterized in that, The volute tongue expansion surface (4221) has a third edge (4221a) away from the first edge (30), and the third edge (4221a) is located on the side of the first sectional surface (40) away from the volute shell (41).

8. The air conditioner indoor unit (100) according to claim 4, characterized in that, The indoor unit (100) of the air conditioner has a variable air supply mode. When the indoor unit (100) of the air conditioner is in the variable air supply mode, at least part of the air guide plate (43) moves to the side of the first cross-section (40) close to the volute (41) to guide at least part of the air to deviate from the preset flow path (W) and flow to the damper plate (44). The damper plate (44) is used to continue to change the flow direction of the air.

9. The air conditioner indoor unit (100) according to claim 8, characterized in that, The variable air supply mode includes a first variable air supply mode. When the indoor unit (100) of the air conditioner is in the first variable air supply mode, the first air guide end of the air guide plate (43) is located on the side of the first cross section (40) close to the volute (41), and the second air guide end of the air guide plate (43) is located on the side of the first cross section (40) away from the volute (41). The first air guide end and the second air guide end are the two ends of the air guide plate (43) along the extension direction of the air duct (20), and the first air guide end is located on the side of the second air guide end away from the air outlet (12). The air guide plate (43) between the first air guide end and the first cross section (40) is used to guide at least part of the air to deviate from the preset flow path (W) and flow to the damper plate (44).

10. The air conditioner indoor unit (100) according to claim 9, characterized in that, The air guide plate (43) is an arc-shaped plate. The first air guide end and the second air guide end are located at both ends of the arc direction of the arc-shaped plate. The inner arc surface of the arc-shaped plate faces the air duct (20). The second air guide end is spliced ​​with the volute tongue expansion surface (4221) so that the inner arc surface of the air guide plate (43) and the volute tongue expansion surface (4221) form a first vortex surface (80). The first vortex surface (80) is used to guide the air at the air outlet (12) to flow along the volute tongue expansion surface (4221) and the inner arc surface to form a vortex.

11. The air conditioner indoor unit (100) according to claim 8, characterized in that, The variable air supply mode also includes a second variable air supply mode. When the indoor unit (100) of the air conditioner is in the second variable air supply mode, the first air guide end of the air guide plate (43) is located on the side of the first cross section (40) away from the volute (41), and the second air guide end of the air guide plate (43) is located on the side of the first cross section (40) close to the volute (41). The first air guide end and the second air guide end are the two ends of the air guide plate (43) along the extension direction of the air duct (20), and the first air guide end is located on the side of the second air guide end away from the air outlet (12). The air guide plate (43) between the second air guide end and the first cross section (40) is used to change the direction of air flow.

12. The air conditioner indoor unit (100) according to claim 11, characterized in that, The damper plate (44) has a first damper end and a second damper end opposite to each other along the extension direction of the air duct (20). The first damper end is located inside the air duct (20) and on the side of the second cross section (70) near the volute tongue (42). The second damper end is located outside the air outlet (12). The damper plate (44) between the first damper end and the second cross section (70) is used to guide at least part of the air to deviate from the preset flow path (W) and flow towards the air guide plate (43).

13. The air conditioner indoor unit (100) according to claim 12, characterized in that, The damper plate (44) includes: First airlock section (443); and, The second damper section (444) is arranged and connected to each other along the extension direction of the air duct (20). The first damper end is located at the end of the first damper section (443) away from the second damper section (444), and the second damper end is located at the end of the second damper section (444) away from the first damper section (443). The second damper section (444) has a second vortex surface (4441) facing the air duct (20). The second vortex surface (4441) is used to guide the air at the air outlet (12) to flow along the second vortex surface (4441) to form a vortex.

14. The air conditioner indoor unit (100) according to claim 13, characterized in that, The curvature of the second damper section (444) is greater than that of the first damper section (443).

15. An air conditioner (200), characterized in that, Includes an indoor air conditioning unit (100) as described in any one of claims 1-14.

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