Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a shell. The cross-flow fan comprises an impeller, a first fan structure and a second fan structure, the first fan structure and the second fan structure are arranged in the circumferential direction of the impeller, each fan structure comprises a volute tongue-shaped structure and a volute-shaped structure which can rotate relative to a shell, in the first state, the volute tongue-shaped structure and the volute-shaped structure of the first fan structure form an air outlet volute tongue and an air outlet volute of the impeller respectively, and in the second state, the volute tongue-shaped structure and the volute-shaped structure of the second fan structure form an air outlet volute of the impeller respectively. In the first state, the volute tongue-shaped structure and the volute-shaped structure of the second fan structure form an air outlet volute tongue and an air outlet volute of the impeller respectively, in the second state, the volute tongue-shaped structure and the volute-shaped structure of the second fan structure form an air outlet volute tongue and an air outlet volute of the impeller respectively, a second air outlet duct for air outlet of the cross-flow fan is formed, and the air outlet directions of the first air outlet duct and the second air outlet duct are different; in the second state, the volute tongue-shaped structure and the volute-shaped structure of the first fan structure uncover the air inlet face of the impeller; in the first state, the volute tongue-shaped structure and the volute-shaped structure of the second fan structure open shielding of the air inlet face of the impeller.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an indoor unit for air conditioning. Background Technology

[0002] With the technological advancements in the air conditioning indoor unit industry, people have higher expectations for the user experience of air conditioning indoor units. Currently, most mainstream air conditioning indoor units, such as some wall-mounted units, share the same air duct for both cooling and heating. This limits the airflow range. During cooling, the denser cold air, blowing downwards, results in a cold-to-warm-up experience, with feet feeling cold and head hot, leading to discomfort. Most current methods for changing the airflow direction during cooling and heating involve rotating a lower air guide vane to deliver hot air downwards and cold air horizontally. However, the use of air guide vanes can only change the airflow direction within a certain range, offering little improvement to the airflow range. Furthermore, when using air guide vanes to change direction within the duct, the airflow area changes, potentially resulting in a very small ventilation area and increased airflow resistance in some cases. Utility Model Content

[0003] The purpose of this utility model is to provide a compact air conditioning indoor unit with multiple air outlet directions.

[0004] This utility model discloses an indoor unit for an air conditioner, having a first state and a second state, including:

[0005] case;

[0006] A cross-flow fan, mounted on a housing, includes an impeller and two fan structures arranged circumferentially along the impeller. Each fan structure includes a volute-shaped structure and a volute-shaped structure arranged on opposite sides of the impeller and rotatable relative to the housing. The two fan structures include a first fan structure and a second fan structure. In a first state, the volute-shaped structure and the volute-shaped structure of the first fan structure respectively form the outlet volute and outlet volute of the impeller. The outlet volute forms a shielding wall that partially obstructs the air inlet surface of the impeller. A first outlet air duct for the cross-flow fan is formed between the volute-shaped structure and the volute-shaped structure of the first fan structure. In a second state, the volute-shaped structure and the volute-shaped structure of the second fan structure respectively form the outlet volute and outlet volute of the impeller. The outlet volute forms a shielding wall that partially obstructs the air inlet surface of the impeller. The air inlet shielding wall of the second fan structure forms a second air outlet duct for the air outlet of the cross-flow fan between the volute-shaped structure and the volute-shaped structure of the second fan structure. The air outlet directions of the first air outlet duct and the second air outlet duct are different. Switching from the first state to the second state, the volute-shaped structure and the volute-shaped structure of the first fan structure rotate in a direction away from each other to open the shielding of the air inlet surface of the impeller. In the second state, the air inlet channel of the impeller is formed between the volute-shaped structure and the volute-shaped structure of the first fan structure. Switching from the second state to the first state, the volute-shaped structure and the volute-shaped structure of the second fan structure rotate in a direction away from each other to open the shielding of the air inlet surface of the impeller. In the first state, the air inlet channel of the impeller is formed between the volute-shaped structure and the volute-shaped structure of the second fan structure.

[0007] In some embodiments, both the volute-shaped structure and the volute-like structure of the first fan structure are hinged to the housing, and both the volute-shaped structure and the volute-like structure of the second fan structure are hinged to the housing. One of the volute-shaped structure and the volute-like structure of the first fan structure is sealed to one of the volute-shaped structure and the volute-like structure of the second fan structure, and the hinge axis is the same as that of the volute-shaped structure and the volute-like structure of the second fan structure. The other of the volute-shaped structure and the volute-like structure of the first fan structure is sealed to the other of the volute-shaped structure and the volute-like structure of the second fan structure, and the hinge axis is the same as that of the volute-shaped structure and the volute-like structure of the second fan structure.

[0008] In some embodiments, the volute-shaped structure of the first fan structure and the volute-shaped structure of the second fan structure are sealed together and hinged relative to the housing, and the hinged axes of the volute-shaped structure of the first fan structure and the volute-shaped structure of the second fan structure are the same.

[0009] In some embodiments, the volute-like structure and the volute-like structure of the first fan structure respectively include an L-shaped bent plate and an arc-shaped plate, and / or the volute-like structure and the volute-like structure of the second fan structure respectively include an L-shaped bent plate and an arc-shaped plate.

[0010] In some embodiments, the device further includes an air vent component and a heat exchanger disposed within the housing. The air vent component includes a first air vent assembly and a second air vent assembly. One of the first air vent assembly and the second air vent assembly is disposed at the upper end of the housing, and the other is disposed at the lower end of the housing. The cross-flow fan, the heat exchanger, the first air vent assembly, and the second air vent assembly are located in the same direction, and the cross-flow fan and the heat exchanger are both located between the first air vent assembly and the second air vent assembly.

[0011] In some embodiments, the air outlet component further includes a first extension wall and a second extension wall, the heat exchanger is located between the second air outlet assembly and the cross-flow fan, one end of the first extension wall and the second extension wall is fixedly connected to the first air outlet assembly, in the first state, the outlet end of the volute-shaped structure of the first fan structure is aligned with the end of the first extension wall away from the first air outlet assembly, the outlet end of the volute-shaped structure of the first fan structure is aligned with the end of the second extension wall away from the first air outlet assembly, the volute-shaped structure of the first fan structure, the volute-shaped structure of the first fan structure, the first extension wall and the second extension wall form an air duct for supplying air to the first air outlet assembly.

[0012] In some embodiments, the first air outlet assembly includes a first air outlet, a second air outlet, a first air guide plate for closing and opening the first air outlet, and a second air guide plate for closing and opening the second air outlet. One end of the first extension wall and the second extension wall are respectively connected to the first air outlet. In the first state, the volute-shaped structure of the first fan structure, the volute-shaped structure of the first fan structure, the first extension wall, and the second extension wall form an air duct for supplying air to the first air outlet.

[0013] In some embodiments, the air outlet component further includes a third extension wall and a fourth extension wall, the first air outlet assembly, the first extension wall and the second extension wall are all located between the third extension wall and the fourth extension wall, one end of the second extension wall and the third extension wall is fixedly connected to the housing, in the second state, the outlet end of the volute-shaped structure of the first fan structure is connected to the end of the third extension wall away from the housing, and the outlet end of the volute-shaped structure of the first fan structure is connected to the end of the fourth extension wall away from the housing.

[0014] In some embodiments, the heat exchanger includes a first heat exchange section and a second heat exchange section arranged in a V-shape, the V-shaped opening of the heat exchanger facing the cross-flow fan, and in the second state, the outlet of the air outlet volute formed by the volute-like structure and the volute-like structure of the second fan structure faces the V-shaped opening of the heat exchanger.

[0015] In some embodiments, the second air outlet assembly includes a third air outlet, a fourth air outlet, a third air guide plate for closing and opening the third air outlet, and a fourth air guide plate for closing and opening the fourth air outlet, wherein the third air outlet and the fourth air outlet are respectively opposite to the first heat exchange section and the second heat exchange section.

[0016] In some embodiments, a water collection tray is also included. The cross-flow fan is located above the heat exchanger. The second air outlet assembly includes a connecting portion that connects the third air outlet and the fourth air outlet. The water collection tray is located between the heat exchanger and the second air outlet assembly and wraps around the heat exchanger near the bottom of the second air outlet assembly. The water collection tray is disposed on the connecting portion.

[0017] Based on the wall-mounted indoor air conditioning unit provided by this utility model, by circumferentially arranging two fan structures including a volute tongue structure and a volute shell structure on the impeller, and in the first and second states, one of the volute tongue structure and the volute shell structure forms the air outlet volute tongue and air outlet volute shell of the impeller, while the other volute tongue structure and the volute shell structure open to form the air inlet channel of the impeller, thereby enabling the cross-flow fan to form air outlet ducts in different directions in the first and second states, thus allowing the indoor air conditioning unit to achieve multiple air outlet directions. At the same time, the structure of the indoor air conditioning unit is also simpler and more compact.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the indoor unit of the air conditioner according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of a portion of the structure of an air conditioner indoor unit according to another embodiment of the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of another state of the structure shown;

[0023] Figure 4 Figure 2 A schematic diagram of another state of the structure shown. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define the components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] The air conditioner indoor unit of this embodiment has a first state and a second state. The air conditioner indoor unit includes a housing 1 and a cross-flow fan.

[0030] A cross-flow fan, also known as a cross-flow fan, was proposed by the French engineer Mortier in 1892. Its impeller is a multi-bladed, long cylindrical shape with forward-curving multi-bladed blades. The structure of a cross-flow fan includes an impeller, a volute, and a volute tongue. The volute forms a shielding wall around the impeller, blocking part of the air inlet surface on the outer circumference of the impeller. The volute tongue separates the inlet and outlet sides of the impeller's outer circumference, causing the center of the vortex formed by the incoming air to move closer to the volute tongue. Thus, when the impeller rotates, the airflow enters from the unobstructed inlet side of the impeller's outer circumference, passes through the impeller's interior, and exits from the outlet side between the shielding wall and the volute tongue, forming the working airflow. In other words, the volute and the volute tongue are important components that enable the cross-flow fan to discharge air. In this application, the volute, which blocks part of the air inlet surface of the impeller, and the volute tongue, which separates the air inlet side and the air outlet side of the outer circumference of the impeller, are referred to as the air outlet volute and the air outlet volute tongue, respectively.

[0031] The cross-flow fan is mounted on the housing 1. "Mounted on the housing 1" means it is installed on the housing and can be located inside, outside, or partially inside and partially outside the housing 1. In the embodiment shown in the figure, the cross-flow fan is located within the cavity formed by the housing 1. The cross-flow fan includes an impeller 44 and two fan structures arranged circumferentially along the impeller 44. The fan structures include a volute-like structure and a volute-like structure arranged on opposite sides of the impeller 44 and rotatable relative to the housing 1. The two fan structures include a first fan structure and a second fan structure. The volute-like structure and the volute-like structure are structures that can meet the requirements for forming the outlet volute and outlet volute of the impeller. When the volute-like structure and the volute-like structure are in the right position, that is, when they can separate the air inlet side and the air outlet side of the impeller respectively and block part of the air inlet surface of the impeller, the impeller of the cross-flow fan can normally discharge air from between the volute-like structure and the volute-like structure, thus forming the outlet volute and outlet volute of the impeller. When the volute-like structure and the volute-like structure are far away from the impeller and cannot allow the impeller of the cross-flow fan to discharge air from between the volute-like structure and the volute-like structure, the outlet volute and outlet volute cannot be formed.

[0032] In the first state, the volute-shaped structure and the volute-shaped structure of the first fan structure form the outlet volute and outlet volute of the impeller 44, respectively. The outlet volute forms a shielding wall that partially blocks the air inlet surface of the impeller 44. A first outlet duct for the cross-flow fan is formed between the volute-shaped structure and the volute-shaped structure of the first fan structure. In the second state, the volute-shaped structure and the volute-shaped structure of the second fan structure form the outlet volute and outlet volute of the impeller 44, respectively. The outlet volute forms a shielding wall that partially blocks the air inlet surface of the impeller 44. A second outlet duct for the cross-flow fan is formed between the volute-shaped structure and the volute-shaped structure of the second fan structure. The air outlet directions of the first and second outlet ducts are different, that is, the airflow directions at the outlets of the first and second outlet ducts are different. For example, when the indoor unit of the air conditioner is a wall-mounted unit, after the unit is installed on the wall, the air outlet direction of the first air outlet duct 21 and the second air outlet duct 22 can be one pointing downwards and the other pointing horizontally or upwards. Figures 2 to 4 In the illustrated embodiment, the first fan structure includes a first volute-like structure 411 and a first volute-like structure 412, and the second fan structure includes a second volute-like structure 421 and a second volute-like structure 422. Figure 2 and Figure 3 The air conditioner indoor unit shown is in the first state. The first volute-shaped structure 411 and the first volute-shaped structure 412 form the outlet volute and outlet volute of the cross-flow fan, respectively. The second volute-shaped structure 421 and the second volute-shaped structure 422 do not form the outlet volute and outlet volute of the cross-flow fan. Figure 4The air conditioner indoor unit shown is in the second state. The second volute-shaped structure 421 and the second volute-shaped structure 422 form the air outlet volute and air outlet volute of the cross-flow fan, respectively. The first volute-shaped structure 411 and the first volute-shaped structure 412 do not form the air outlet volute and air outlet volute of the cross-flow fan.

[0033] Switching from the first state to the second state, the volute-like structure and the volute-like structure of the first fan structure rotate in a direction away from each other to open up the obstruction of the air inlet surface of the impeller 44. In the second state, an air inlet channel for the impeller 44 is formed between the volute-like structure and the volute-like structure of the first fan structure. Figures 3 to 4 When the indoor unit of the air conditioner switches from the first state to the second state, the first volute tongue structure 411 and the first volute shell structure 412 rotate in a direction away from each other. In the embodiment shown in the figure, the first volute tongue structure 411 rotates counterclockwise and the first volute shell structure 412 rotates clockwise. In the second state, the first volute shell structure 412 no longer obstructs the air intake surface of the outer circumference of the impeller. After rotation, the first volute tongue structure 411 and the first volute shell structure 412 no longer constitute the air outlet volute tongue and air outlet volute of the impeller. An air intake channel for the impeller is formed between the first volute tongue structure 411 and the first volute shell structure 412. At this time, the air enters the impeller from between the first volute tongue structure 411 and the first volute shell structure 412, and then flows out from between the second volute tongue structure 421 and the second volute shell structure 422 after passing through the impeller. Switching from the second state to the first state, the volute-like structure and the volute-like structure of the second fan structure rotate in a direction away from each other to open up the obstruction of the air inlet surface of the impeller 44. In the first state, an air inlet channel for the impeller 44 is formed between the volute-like structure and the volute-like structure of the second fan structure. Figures 4 to 3 When the indoor unit of the air conditioner switches from the second state to the first state, the second volute tongue structure 421 and the second volute shell structure 422 rotate in a direction away from each other. The second volute tongue structure 421 rotates counterclockwise and the second volute shell structure 422 rotates clockwise. In the second state, the second volute shell structure 422 no longer obstructs the air inlet surface of the impeller. After rotation, the second volute tongue structure 421 and the second volute shell structure 422 no longer constitute the air outlet volute tongue and air outlet volute of the impeller. At this time, the air enters the impeller between the second volute tongue structure 421 and the second volute shell structure 422, and then flows out between the first volute tongue structure 411 and the first volute shell structure 412 after passing through the impeller.

[0034] The wall-mounted indoor unit of this air conditioner, through the circumferential arrangement of two fan structures including a volute-like structure and a volute-like structure on the impeller, and in both the first and second states, the volute-like structure and volute-like structure of one fan structure form the outlet volute and outlet volute of the impeller, while the volute-like structure and volute-like structure of the other fan structure open to form the air inlet channel of the impeller. This allows the cross-flow fan to form air outlet ducts in different directions in the first and second states, enabling the indoor unit to achieve multiple air outlet directions. The air conditioner can select different air outlet directions during cooling and heating, improving the comfort of the air conditioner's airflow under different conditions. Simultaneously, the structure of the indoor unit is simpler and more compact. Furthermore, when the volute-like structure and volute-like structure of the fan structure open to form the air inlet channel of the impeller, they can guide the air intake of the impeller, improving the impeller's air intake efficiency.

[0035] In some embodiments, such as Figures 2 to 4As shown, both the volute-shaped structure and the volute-like structure of the first fan structure are hinged to the housing 1. Similarly, both the volute-shaped structure and the volute-like structure of the second fan structure are hinged to the housing 1. Specifically, the first volute-shaped structure 411 and the first volute-like structure 412 are hinged to the housing 1, as are the second volute-shaped structure 421 and the second volute-like structure 422. One of the volute-shaped structures of the first fan structure is sealed to one of the volute-shaped structures of the second fan structure, and their hinge axis relative to the housing 1 is the same. The other volute-shaped structure of the first fan structure is sealed to the other volute-shaped structure of the second fan structure, and their hinge axis relative to the housing 1 is the same. That is, one of the first volute tongue structure 411 and the first volute shell structure 412, and one of the second volute tongue structure 421 and the second volute shell structure 422 are the same as the hinge axis of the housing 1 and are sealed together. The other of the first volute tongue structure 411 and the first volute shell structure 412, and the other of the second volute tongue structure 421 and the second volute shell structure 422 are the same as the hinge axis of the housing 1 and are sealed together. For example, the first volute tongue structure 411 and the second volute tongue structure 421 are the same as the hinge axis of the housing 1 and are sealed together, and the second volute shell structure 422 is the same as the hinge axis of the housing 1 and is sealed together. In this embodiment, one of the volute-shaped structure and the volute-shaped structure of the first fan structure is sealed and connected to one of the volute-shaped structure and the volute-shaped structure of the second fan structure, and the hinge axis is the same as that of the hinged structure relative to the housing 1. For example, the two structures with the same hinge axis maintain a dynamic sealed connection relative to the same hinge axis. Thus, the two structures with the same hinge axis are more likely to maintain a sealed connection before and after the volute-shaped structure and the volute-shaped structure rotate, as well as during the rotation process, thus maintaining a better sealing effect and helping to ensure the air intake and exhaust efficiency of the cross-flow fan.

[0036] In some embodiments, such as Figures 2 to 4As shown, the volute-shaped structure of the first fan structure and the volute-shaped structure of the second fan structure are sealed together and hinged relative to the housing 1 on the same hinge axis. Similarly, the volute-shaped structure of the first fan structure and the volute-shaped structure of the second fan structure are sealed together and hinged relative to the housing 1 on the same hinge axis. In this embodiment, the arrangement of the volute-shaped structure and the volute-shaped structure of the first fan structure is similar to a centrally symmetrical arrangement, that is, along the circumference of the impeller, the first volute-shaped structure 411, the first volute-shaped structure 412, the second volute-shaped structure 421, and the second volute-shaped structure 422 are arranged sequentially. By setting the first volute tongue structure 411 and the second volute tongue structure 421 to be hinged and sealed, and the first volute shell structure 412 and the second volute shell structure 422 to be hinged and sealed, since the volute shell structure is larger in size than the volute tongue structure, the arrangement of this embodiment can make the arrangement of the first fan structure and the second fan structure in the impeller circumferential direction more uniform and coordinated, and it is also easier to arrange the first air outlet duct and the second air outlet duct as an upper air outlet duct and a lower air outlet duct.

[0037] In some embodiments, such as Figures 2 to 4 As shown, the first fan structure's volute-like structure and volute-like structure respectively include an L-shaped bent plate and an arc-shaped plate, and / or the second fan structure's volute-like structure and volute-like structure respectively include an L-shaped bent plate and an arc-shaped plate. The L-shaped bent plate includes a first sub-plate and a second sub-plate connected to each other. When the volute-like structure forms the outlet volute, the first sub-plate is arranged around the outer peripheral surface of the impeller, and the second sub-plate extends away from the outer peripheral surface of the impeller. In the embodiment shown, when the volute-like structure forms the outlet volute, the first sub-plate blocks part of the impeller's air inlet surface, that is, forms the impeller's blocking wall, while the second sub-plate does not block the impeller's air inlet surface and forms the air duct wall of the outlet air duct. This embodiment, by setting the volute-like structure as an L-shaped bent plate, can better separate the air inlet and outlet sides of the impeller when forming the outlet volute, thereby improving the impeller's air outlet efficiency. Meanwhile, when the impeller discharges air, the second sub-plate of the volute-shaped structure can also form an air duct wall to guide the airflow, further improving the airflow efficiency while making the structure more compact. In addition, setting the volute-shaped structure as an arc-shaped plate makes the airflow guidance smoother when forming the airflow volute, reducing airflow resistance, and also allows for smoother airflow into the impeller during airflow guidance, improving airflow efficiency.

[0038] In some embodiments, such as Figures 2 to 4As shown, the indoor unit of the air conditioner also includes an air vent component and a heat exchanger 31 disposed within the housing 1. The air vent component includes a first air vent assembly 21 and a second air vent assembly 22. One of the first air vent assembly 21 and the second air vent assembly 22 is disposed at the upper end of the housing 1, and the other is disposed at the lower end of the housing 1. The cross-flow fan, the heat exchanger 31, the first air vent assembly 21, and the second air vent assembly 22 are located in the same direction, and both the cross-flow fan and the heat exchanger 31 are located between the first air vent assembly 21 and the second air vent assembly 22. The air vent assembly includes an air vent for air intake or exhaust. The upper end and lower end are used with reference to the indoor unit of the air conditioner when it is installed, for example, when the air conditioner is wall-mounted and installed on the wall. The descriptions of the upper and lower positions in this application are all based on the position of the air conditioner wall-mounted unit after it is installed on the wall. The upper end of the air conditioner wall-mounted unit is the end located at the top, and the lower end is the end located at the bottom. In the embodiment shown in the figure, the first air vent assembly is disposed at the upper end of the housing 1, and the second air vent assembly is disposed at the lower end of the housing 1. Heat exchanger 31 is located inside the housing 1. Refrigerant is introduced into heat exchanger 31 to exchange heat with the air passing through it. When the air conditioner is cooling, heat exchanger 3 acts as an evaporator for the refrigerant; when the air conditioner is heating, heat exchanger 3 acts as a condenser for the refrigerant. The cross-flow fan, heat exchanger 31, first air outlet assembly 21, and second air outlet assembly 22 are located in the same direction, that is, they are on the same straight line. The first air outlet assembly 21 and second air outlet assembly 22 are located at the upper and lower ends of the housing 1, respectively. Therefore, the cross-flow fan, heat exchanger 31, first air outlet assembly 21, and second air outlet assembly 22 are located on a straight line extending vertically. Figure 2 In the illustrated embodiment, the cross-flow fan, heat exchanger 31, first air outlet assembly 21, and second air outlet assembly 22 are all located in the vertical direction. In this embodiment of the wall-mounted air conditioner, the first air outlet assembly 21 and the second air outlet assembly 22 are respectively arranged at the upper and lower ends of the housing 1, and the cross-flow fan, heat exchanger 31, first air outlet assembly 21, and second air outlet assembly 22 are arranged in the same direction. Furthermore, the fan component and heat exchanger 31 are both located between the first air outlet assembly 21 and the second air outlet assembly 22. This arrangement ensures that the cross-flow fan, heat exchanger 31, first air outlet assembly 21, and second air outlet assembly 22 are all positioned in the height direction (i.e., vertical direction) of the wall-mounted air conditioner, thereby reducing the thickness (i.e., the horizontal dimension) of the unit. This results in a less bulky and more aesthetically pleasing indoor unit when installed on the wall.

[0039] In some embodiments, the air outlet component further includes a first extending wall 231 and a second extending wall 232. A heat exchanger 31 is located between the second air outlet assembly 22 and the cross-flow fan. One end of the first extending wall 231 and the second extending wall 232 is fixedly connected to the first air outlet assembly 21. In a first state, the outlet end of the volute-shaped structure of the first fan structure is aligned with the end of the first extending wall 231 away from the first air outlet assembly 21, and the outlet end of the volute-shaped structure of the first fan structure is aligned with the end of the second extending wall 232 away from the first air outlet assembly 21. The volute-shaped structure of the first fan structure, the volute-shaped structure of the first fan structure, the first extending wall 231, and the second extending wall 232 form an air duct for supplying air to the first air outlet assembly 21. The outlet end of the volute-shaped structure of the first fan structure is aligned with the end of the first extending wall 231 away from the first air outlet assembly 21. The alignment of the ends in section 1 refers to the following: the outlet end of the volute-shaped structure of the first fan structure is directly connected to the end of the first extension wall 231 away from the first air outlet assembly 21; or, when there is a gap between them, the extension direction of the outlet end of the volute-shaped structure of the first fan structure is the same as the extension direction of the end of the first extension wall 231 away from the first air outlet assembly 21. Similarly, the alignment of the outlet end of the volute-shaped structure of the first fan structure with the end of the second extension wall 232 away from the first air outlet assembly 21 means that the outlet end of the volute-shaped structure of the first fan structure is directly connected to the end of the second extension wall 232 away from the first air outlet assembly 21; or, when there is a gap between them, the extension direction of the outlet end of the volute-shaped structure of the first fan structure is the same as the extension direction of the end of the second extension wall 232 away from the first air outlet assembly 21. Thus, in the first state, the volute-shaped structure of the first fan structure, the volute-shaped structure of the first fan structure, the first extension wall 231, and the second extension wall 232 can form an air duct that directly supplies air to the first air outlet assembly 21. In this embodiment, the heat exchanger 31 is arranged between the second air outlet assembly 22 and the cross-flow fan, and a first extension wall 231 and a second extension wall 232 are provided. In the first state, the outlet end of the cross-flow fan's outlet volute and outlet casing faces the first air outlet assembly. The first extension wall 231 and the second extension wall 232 can guide the airflow more efficiently, improving the airflow efficiency. In the second state, the outlet end of the cross-flow fan's outlet volute and outlet casing faces the heat exchanger. Since the heat exchangers are close together, there is no need to provide extension walls to achieve efficient airflow to the heat exchanger. At the same time, if the heat exchanger is set as a V-shaped heat exchanger as shown in the figure, the heat exchanger structure can receive the airflow from the cross-flow fan more efficiently. Thus, the structure switching between "long outlet casing and long outlet volute" and "short outlet casing and short outlet volute" can be realized in the first and second states, achieving efficient and accurate airflow from the cross-flow fan, improving the airflow utilization efficiency, and resulting in a compact and efficient structure.

[0040] In some embodiments, the first air outlet assembly 21 includes a first air outlet 251, a second air outlet 252, a first air guide plate 241 for closing and opening the first air outlet 251, and a second air guide plate 242 for closing and opening the second air outlet 252. One end of the first extension wall 231 and the second extension wall 232 are respectively connected to the first air outlet 251. In a first state, the volute-shaped structure of the first fan structure, the volute-shaped structure of the first fan structure, the first extension wall 231, and the second extension wall 232 form an air duct for supplying air to the first air outlet 251. In this embodiment, in the first state, the cross-flow fan discharges air to the first air outlet assembly. Since the air discharge of the cross-flow fan is relatively concentrated, the air discharge demand can be met by using one air outlet, thus achieving efficient air discharge by only opening the first air guide plate 241. In the second state, the first air outlet assembly serves as the air inlet side of the cross-flow fan. Both the first air guide plate 241 and the second air guide plate 242 are open, thereby utilizing the first air outlet and the second air outlet to provide air intake for the cross-flow fan. This better meets the large-area air intake requirements of the cross-flow fan. In other words, this embodiment can better meet the air outlet requirements of the cross-flow fan in the first state and the air intake requirements in the second state.

[0041] In some embodiments, such as Figures 2 to 4 As shown, the air outlet component also includes a third extension wall 233 and a fourth extension wall 234. The first air outlet assembly 21, the first extension wall 231, and the second extension wall 232 are all located between the third extension wall 233 and the fourth extension wall 234. One end of the second extension wall 232 and the third extension wall 233 is fixedly connected to the housing 1. In the second state, the outlet end of the volute-shaped structure of the first fan structure is connected to the end of the third extension wall 233 away from the housing 1, preferably in a sealed connection. The outlet end of the volute-shaped structure of the first fan structure is connected to the end of the fourth extension wall 234 away from the housing 1, preferably in a sealed connection. In this embodiment, the third extension wall 233 and the fourth extension wall 234 are provided on both sides of the first air outlet assembly 21, as shown... Figure 4As shown, in the second state, the volute-shaped structure and the volute-shaped structure of the first fan structure are connected to the third extension wall 233 and the fourth extension wall 234, respectively. The air entering from between the volute-shaped structure and the volute-shaped structure of the first fan structure is restricted by the volute-shaped structure, the third extension wall 233, the volute-shaped structure and the fourth extension wall 234 of the first fan structure to enter the impeller, and will not flow out from outside the third extension wall 233 and the fourth extension wall 234. This allows the air volume to enter the impeller as much as possible, thereby improving the air intake efficiency of the impeller. Meanwhile, since the outlet end of the volute-shaped structure of the first fan structure is directly connected to the end of the first extension wall 231 away from the first air outlet assembly 21 in the first state, when the outlet end of the volute-shaped structure of the first fan structure is directly connected to the end of the second extension wall 232 away from the first air outlet assembly 21, the air volume entering from between the volute-shaped structure and the volute-shaped structure of the second fan structure will also be entered into the impeller as much as possible, effectively improving the air intake efficiency of the impeller in different states.

[0042] In some embodiments, the heat exchanger 31 includes a first heat exchange section 311 and a second heat exchange section 312 arranged in a V-shape. The V-shaped opening of the heat exchanger 31 faces the cross-flow fan. In a second state, the outlet of the air outlet volute formed by the volute-shaped structure and the volute-shaped structure of the second fan structure faces the V-shaped opening of the heat exchanger 31. By configuring the heat exchanger 31 to include the first heat exchange section 311 and the second heat exchange section 312 arranged in a V-shape, and with the V-shaped opening facing the impeller, this embodiment achieves concentrated and efficient airflow between the fan and the heat exchanger, whether the cross-flow fan outlets air to the heat exchanger in the first state or draws air from the heat exchanger in the second state, thereby improving the airflow efficiency between the two.

[0043] In some embodiments, the second air outlet assembly 22 includes a third air outlet 253, a fourth air outlet 254, a third air guide plate 243 for closing and opening the third air outlet 253, and a fourth air guide plate 244 for closing and opening the fourth air outlet 254. The third air outlet 253 and the fourth air outlet 254 are respectively opposite to the first heat exchange section 311 and the second heat exchange section 312. In this embodiment, by setting the third air outlet and the fourth air outlet, as well as the third air guide plate and the fourth air guide plate, the two air outlets and the air guide plate respectively correspond to one heat exchange section of the heat exchanger, that is, the air outlets face one heat exchange section. Thus, in the first state, the third air outlet and the fourth air outlet can respectively deliver a large amount of air to the first heat exchange section 311 and the second heat exchange section 312 for heat exchange. In the second state, the first heat exchange section 311 and the second heat exchange section 312 can also output the heat-exchanged air to the outside through the third air outlet and the fourth air outlet, thereby improving the heat exchange efficiency of the heat exchanger and better meeting the air intake and exhaust requirements of the cross-flow fan.

[0044] In some embodiments, a water collection tray 32 is also included. A cross-flow fan is located above the heat exchanger 31. The second air outlet assembly 22 includes a connecting portion connecting the third air outlet 253 and the fourth air outlet 254. The water collection tray 32 is located between the heat exchanger 31 and the second air outlet assembly 22 and surrounds the bottom of the heat exchanger 31 near the second air outlet assembly 22. The water collection tray 32 is disposed on the connecting portion. In this embodiment, by arranging the water collection tray directly below the heat exchanger on the connecting portion connecting the third and fourth air outlets, and by surrounding the bottom of the heat exchanger, the water collection tray can effectively collect condensate from the heat exchanger while causing less interference to the air inlet and outlet of the heat exchanger, thus ensuring the air inlet and outlet efficiency and heat exchange efficiency of the heat exchanger.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An indoor unit for an air conditioner, characterized in that, It has a first state and a second state, including: Shell (1); A cross-flow fan, mounted on the housing (1), includes an impeller (44) and two fan structures arranged circumferentially along the impeller (44). Each fan structure includes a volute-shaped structure and a volute-shaped structure arranged on opposite sides of the impeller (44) and rotatable relative to the housing (1). The two fan structures include a first fan structure and a second fan structure. In a first state, the volute-shaped structure and the volute-shaped structure of the first fan structure respectively form the outlet volute and outlet volute of the impeller (44). The outlet volute forms a shielding wall that partially blocks the air inlet surface of the impeller (44). A first air outlet duct for the cross-flow fan is formed between the volute-shaped structure and the volute-shaped structure of the first fan structure. In a second state, the volute-shaped structure and the volute-shaped structure of the second fan structure respectively form the outlet volute and outlet volute of the impeller (44). The outlet volute forms a shielding wall that partially blocks the air inlet surface of the impeller (44). A first air outlet duct for the cross-flow fan is formed between the volute-shaped structure and the volute-shaped structure of the first fan structure. In a second state, the volute-shaped structure and the volute-shaped structure of the second fan structure respectively form the outlet volute and outlet volute of the impeller (44). The outlet volute forms a shielding wall that partially blocks the air inlet surface of the impeller (44). The shielding wall of part of the air inlet surface of the impeller (44) forms a second air outlet duct for the air outlet of the cross-flow fan between the volute-shaped structure and the volute-shaped structure of the second fan structure. The air outlet directions of the first air outlet duct and the second air outlet duct are different. When switching from the first state to the second state, the volute-shaped structure and the volute-shaped structure of the first fan structure rotate in a direction away from each other to open the shielding of the air inlet surface of the impeller (44). In the second state, the air inlet channel of the impeller (44) is formed between the volute-shaped structure and the volute-shaped structure of the first fan structure. When switching from the second state to the first state, the volute-shaped structure and the volute-shaped structure of the second fan structure rotate in a direction away from each other to open the shielding of the air inlet surface of the impeller (44). In the first state, the air inlet channel of the impeller (44) is formed between the volute-shaped structure and the volute-shaped structure of the second fan structure.

2. The air conditioner indoor unit as described in claim 1, characterized in that, Both the volute-shaped structure and the volute-shaped structure of the first fan structure are hinged to the housing (1). Both the volute-shaped structure and the volute-shaped structure of the second fan structure are hinged to the housing (1). One of the volute-shaped structure and the volute-shaped structure of the first fan structure are sealed to one of the volute-shaped structure and the volute-shaped structure of the second fan structure and have the same hinge axis relative to the housing (1). The other volute-shaped structure and the volute-shaped structure of the first fan structure are sealed to the other volute-shaped structure and the volute-shaped structure of the second fan structure and have the same hinge axis relative to the housing (1).

3. The air conditioner indoor unit as described in claim 2, characterized in that, The volute-shaped structure of the first fan structure and the volute-shaped structure of the second fan structure are sealed together and hinged relative to the housing (1) with the same hinge axis.

4. The air conditioner indoor unit as described in any one of claims 1 to 3, characterized in that, The first fan structure's volute-like structure and volute-like structure respectively include an L-shaped bent plate and an arc-shaped plate, and / or the second fan structure's volute-like structure and volute-like structure respectively include an L-shaped bent plate and an arc-shaped plate.

5. The air conditioning indoor unit as described in any one of claims 1 to 3, characterized in that, It also includes an air outlet component and a heat exchanger (31) disposed in the housing (1). The air outlet component includes a first air outlet assembly (21) and a second air outlet assembly (22). One of the first air outlet assembly (21) and the second air outlet assembly (22) is disposed at the upper end of the housing (1), and the other is disposed at the lower end of the housing (1). The cross-flow fan, the heat exchanger (31), the first air outlet assembly (21) and the second air outlet assembly (22) are located in the same direction, and the cross-flow fan and the heat exchanger (31) are both located between the first air outlet assembly (21) and the second air outlet assembly (22).

6. The air conditioner indoor unit as described in claim 5, characterized in that, The air outlet component further includes a first extension wall (231) and a second extension wall (232). The heat exchanger (31) is located between the second air outlet assembly (22) and the cross-flow fan. One end of the first extension wall (231) and the second extension wall (232) is fixedly connected to the first air outlet assembly (21). In the first state, the outlet end of the volute structure of the first fan structure is aligned with the end of the first extension wall (231) away from the first air outlet assembly (21), and the outlet end of the volute structure of the first fan structure is aligned with the end of the second extension wall (232) away from the first air outlet assembly (21). The volute structure of the first fan structure, the volute structure of the first fan structure, the first extension wall (231) and the second extension wall (232) form an air duct for supplying air to the first air outlet assembly (21).

7. The air conditioner indoor unit as described in claim 6, characterized in that, The first air outlet assembly (21) includes a first air outlet (251), a second air outlet (252), a first air guide plate (241) for closing and opening the first air outlet (251), and a second air guide plate (242) for closing and opening the second air outlet (252). One end of the first extension wall (231) and the second extension wall (232) are respectively connected to the first air outlet (251). In the first state, the volute-shaped structure of the first fan structure, the volute-shaped structure of the first fan structure, the first extension wall (231) and the second extension wall (232) form an air duct for supplying air to the first air outlet (251).

8. The air conditioner indoor unit as described in claim 6, characterized in that, The air outlet component further includes a third extension wall (233) and a fourth extension wall (234). The first air outlet assembly (21), the first extension wall (231), and the second extension wall (232) are all located between the third extension wall (233) and the fourth extension wall (234). One end of the second extension wall (232) and the third extension wall (233) is fixedly connected to the housing (1). In the second state, the outlet end of the volute structure of the first fan structure is connected to the end of the third extension wall (233) away from the housing (1), and the outlet end of the volute structure of the first fan structure is connected to the end of the fourth extension wall (234) away from the housing (1).

9. The indoor unit of the air conditioner as described in claim 5, characterized in that, The heat exchanger (31) includes a first heat exchange section (311) and a second heat exchange section (312) arranged in a V-shape. The V-shaped opening of the heat exchanger (31) faces the cross-flow fan. In the second state, the outlet of the air outlet volute formed by the volute tongue structure and the volute shell structure of the second fan structure faces the V-shaped opening of the heat exchanger (31).

10. The air conditioner indoor unit as described in claim 9, characterized in that, The second air outlet assembly (22) includes a third air outlet (253), a fourth air outlet (254), a third air guide plate (243) for closing and opening the third air outlet (253), and a fourth air guide plate (244) for closing and opening the fourth air outlet (254). The third air outlet (253) and the fourth air outlet (254) are respectively opposite to the first heat exchange section (311) and the second heat exchange section (312).

11. The air conditioner indoor unit as described in claim 10, characterized in that, It also includes a water receiving tray (32), the cross-flow fan is located above the heat exchanger (31), the second air outlet assembly (22) includes a connecting part connecting the third air outlet (253) and the fourth air outlet (254), the water receiving tray (32) is located between the heat exchanger (31) and the second air outlet assembly (22) and wraps around the heat exchanger (31) near the bottom of the second air outlet assembly (22), and the water receiving tray (32) is provided on the connecting part.

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