Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a shell. The air opening part comprises a top air opening assembly arranged at the upper end of the shell; the heat exchanger is arranged in the shell and located below the top air duct opening assembly, the heat exchanger comprises a first heat exchange part and a second heat exchange part, one ends of the first heat exchange part and the second heat exchange part are connected with each other, and the first heat exchange part and the second heat exchange part form a V-shaped structure with an opening facing the top air duct opening assembly; the fan component is arranged in the shell and is positioned below the heat exchanger; the water pan is used for receiving condensate water of a heat exchanger and is positioned below the end parts, connected with each other, of the first heat exchange part and the second heat exchange part; during air supply work, air flows through the top air duct opening assembly, the fan component drives the air to enter the shell, and the air exchanges heat with the heat exchanger when flowing in the shell.

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] Air conditioners are widely used in modern society as common electrical appliances. An air conditioner indoor unit typically consists of a casing and a fan and heat exchanger housed within it. The fan draws in ambient air, exchanges heat with the heat exchanger, and then exhausts it to the outside. When the heat exchanger's temperature is low, the indoor unit outputs cool air; when it's high, it outputs hot air. When the heat exchanger's temperature is low, condensation may occur, so a drip tray is often included in the indoor unit to collect this condensate. Due to their numerous components and complex layout, air conditioner indoor units are relatively large in size. Utility Model Content

[0003] The purpose of this utility model is to provide an air conditioning indoor unit with a compact structure and reasonable layout.

[0004] This utility model discloses an indoor unit for an air conditioner, comprising:

[0005] case;

[0006] Air vent component, including a top air duct assembly located at the upper end of the housing;

[0007] A heat exchanger is disposed inside the housing and located below the top air duct assembly. The heat exchanger includes a first heat exchange section and a second heat exchange section connected to each other at one end. The first heat exchange section and the second heat exchange section form a positive V-shaped structure with the opening facing the top air duct assembly.

[0008] The fan component is disposed inside the housing and located below the heat exchanger;

[0009] A drip tray, used to collect condensate from the heat exchanger, is located below the ends where the first heat exchange section and the second heat exchange section connect.

[0010] During air supply operation, air flows through the top air duct assembly, the fan component drives the air into the housing, and the air exchanges heat with the heat exchanger while flowing within the housing.

[0011] In this embodiment of the air conditioner indoor unit, the heat exchanger is configured as a V-shaped structure including a first heat exchange section and a second heat exchange section. The heat exchanger is positioned above the fan assembly, with its opening facing the top air duct assembly. This allows for the collection of condensate from the heat exchanger to be handled by a single drip tray at the bottom, simplifying the structure, improving production and assembly efficiency, and saving costs. Furthermore, the large space between the V-shaped structure and the top air duct facilitates the layout of other air handling modules such as filters, electric heating, and sterilization.

[0012] In some embodiments, the indoor unit of the air conditioner has a first state. In the first state, when the indoor unit of the air conditioner is operating to supply air, the fan component drives air into the housing and outputs air to the heat exchanger. After the air exchanges heat with the heat exchanger, it flows out from the top air duct assembly to the outside. The water tray also includes an air guide structure facing the fan component. The air guide structure is used to divide the air output by the fan component into two streams in the first state to be directed to the first heat exchange section and the second heat exchange section respectively.

[0013] The water tray in this embodiment also has an air guiding function. While collecting condensate, it can also make the heat exchanger more uniform and improve the heat exchange efficiency in the first state. One component has multiple functions, realizing the efficient use of structural components.

[0014] In some embodiments, the air guide structure includes a first surface and a second surface that are interconnected and face the water receiving tray toward the fan component. The first surface and the second surface are V-shaped and open toward the heat exchanger, and wrap around the interconnected ends of the first heat exchange portion and the second heat exchange portion.

[0015] In this embodiment, the bottom surface of the water receiving tray is designed as a V-shaped first surface and a second surface, which can better match the heat exchanger with the positive V-shaped structure. It can effectively divide the air output by the fan component into two streams in the first state and guide them to the first heat exchange section and the second heat exchange section. The air guiding effect is good, the structure of the water receiving tray is simple, and the effect is outstanding.

[0016] In some embodiments, the first surface and the second surface are S-shaped surfaces.

[0017] In this embodiment, the first and second surfaces are designed as S-shaped surfaces, which helps to reduce the resistance of the wind flowing on the first and second surfaces when the water tray guides the air, thereby improving the air guiding efficiency.

[0018] In some embodiments, the air outlet component further includes a bottom air duct assembly disposed at the lower end of the housing, and the fan component includes a mounting bracket rotatably disposed relative to the housing, a drive member drivenly connected to the mounting bracket, and a cross-flow fan mounted on the mounting bracket. The cross-flow fan includes an impeller mounted on the mounting bracket and a baffle wall and a volute tongue arranged opposite to each other on both sides of the fan unit for air outlet of the impeller. The air conditioning indoor unit has a first state and a second state. In the first state, the outlet of the air duct formed by the baffle wall and the volute tongue of the cross-flow fan faces the top air duct assembly. In the second state, the outlet of the air duct formed by the baffle wall and the volute tongue of the cross-flow fan faces the bottom air duct assembly. The drive member is used to drive the mounting bracket to rotate relative to the housing so that the air conditioning indoor unit switches between the first state and the second state.

[0019] In this embodiment, the indoor unit of the air conditioner switches between a first state and a second state during cooling and heating. This allows the cool air to be output from the top during cooling, avoiding direct airflow onto people, and because the cool air sinks due to gravity, it provides a more comprehensive cooling effect and greater comfort. During heating, hot air is output from the bottom; its lower density allows it to rise, improving heating uniformity and achieving a more comprehensive heating effect.

[0020] In some embodiments, the air vent component further includes a first extension wall and a second extension wall, one end of the first extension wall and the second extension wall being fixedly connected to the bottom air duct assembly. In the second state, the outlet end of the volute tongue is aligned with the end of the first extension wall away from the bottom air duct assembly, and the outlet end of the shielding wall is aligned with the end of the second extension wall away from the bottom air duct assembly. The volute tongue, the shielding wall, the first extension wall and the second extension wall form an air duct for supplying air to the bottom air duct assembly.

[0021] In this embodiment, by setting a first extension wall and a second extension wall, in the second state, the outlet end of the volute tongue of the cross-flow fan and the shielding wall faces the bottom air duct assembly. The first and second extension walls can guide the airflow more efficiently, improving the airflow efficiency. In the first state, the outlet end of the volute tongue of the cross-flow fan and the shielding wall faces the heat exchanger. Since the heat exchangers are close together, it is not necessary to set an extension wall to achieve efficient airflow to the heat exchanger. Thus, the structure switching between "long shielding wall, long volute tongue" and "short shielding wall, short volute tongue" is realized between the second state and the first state.

[0022] In some embodiments, the bottom air duct assembly includes a first air vent, a second air vent, a first air guide plate assembly for closing and opening the first air vent, and a second air guide plate assembly for closing and opening the second air vent. One end of the first extension wall and the second extension wall are respectively connected to both ends of the first air vent. In the second state, the volute tongue, the shielding wall, the first extension wall, and the second extension wall form an air duct for supplying air to the first air vent.

[0023] In the second state of this embodiment, the cross-flow fan discharges air to the bottom air duct assembly. Since the airflow from the cross-flow fan is relatively concentrated, a single air outlet is sufficient to meet the airflow requirements; that is, only the first air outlet and the first air guide plate assembly need to be opened to achieve efficient airflow. In the first state, the top air duct assembly serves as the air inlet side of the cross-flow fan. Both the first and second air guide plate assemblies are open, thereby utilizing the first and second air outlets to provide airflow for the cross-flow fan. This better meets the large-area airflow requirements of the cross-flow fan, meaning this embodiment better satisfies both the airflow discharge requirements in the second state and the airflow intake requirements in the first state.

[0024] In some embodiments, a third extension wall is further provided within the housing and connected to the housing at one end. The bottom air duct assembly is located between the first extension wall and the third extension wall. In a second state, the distance between the end of the shielding wall near the heat exchanger and the end of the third extension wall away from the housing is less than a first preset distance to block the air flowing in from the top air duct assembly from flowing between the shielding wall and the third extension wall.

[0025] In this embodiment, by providing a third extension wall, in the second state, the third extension wall and the shielding wall can deliver more air from the top air duct assembly to the air inlet side of the cross-flow fan, preventing air from passing between the third extension wall and the shielding wall, thereby improving the air inlet efficiency of the cross-flow fan.

[0026] In some embodiments, the volute tongue is a U-shaped structure, comprising a first plate and a second plate located at both ends, and an intermediate plate arranged circumferentially along the impeller connecting the first plate and the second plate. In a second state, the distance between the free end of the first plate and the first extension wall is less than a second preset distance to block wind from flowing between the free end of the first plate and the first extension wall. In a first state, the distance between the free end of the second plate and the third extension wall is less than a third preset distance to block wind from flowing between the free end of the third plate and the third extension wall.

[0027] This embodiment designs the volute tongue as a U-shaped structure, which can meet the requirements of the second preset distance and the third preset distance in the second state. Thus, in the second state, the volute tongue and the first extension wall can guide more of the air outlet of the cross-flow fan to the bottom air duct assembly, thereby improving the air outlet efficiency. In the first state, more of the air inlet of the bottom air duct assembly is introduced into the air inlet side of the cross-flow fan, thereby improving the air inlet efficiency of the cross-flow fan.

[0028] In some embodiments, the indoor unit of the air conditioner is a wall-mounted air conditioner.

[0029] In this embodiment of the wall-mounted air conditioner, the heat exchanger, fan components, and bottom air duct assembly are all arranged vertically. That is, when the wall-mounted air conditioner is installed on the wall, the bottom air duct, heat exchanger, and fan components are arranged vertically, which can reduce the horizontal dimensions of the wall-mounted air conditioner, i.e., reduce the width, thereby making it easier to arrange the wall-mounted air conditioner, reducing the horizontal space occupied by the installation, and also making it more aesthetically pleasing.

[0030] Based on the indoor unit of the air conditioner provided by this utility model, by setting the heat exchanger as a positive V-shaped structure including a first heat exchange section and a second heat exchange section, and by placing the heat exchanger above the fan component and facing the top air duct assembly, a single drip tray at the bottom of the heat exchanger can meet the requirement of collecting the condensate, simplifying the structure and saving costs. At the same time, the positive V-shaped structure and the top air duct opening provide ample space for the layout of other modules such as filters and electrical components.

[0031] 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

[0032] 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:

[0033] Figure 1 This is a cross-sectional view of the indoor unit of the air conditioner according to an embodiment of the present utility model;

[0034] Figure 2 This is a cross-sectional view of the indoor unit of an air conditioner according to another embodiment of the present invention;

[0035] Figure 3 This is a cross-sectional structural diagram of an indoor air conditioner unit according to another embodiment of the present utility model;

[0036] Figure 4 This is a cross-sectional structural diagram of an indoor air conditioner unit according to another embodiment of the present utility model;

[0037] Figure 5 This is a cross-sectional structural diagram of an indoor air conditioner unit according to another embodiment of the present utility model;

[0038] Figure 6 This is a cross-sectional structural diagram of an indoor air conditioning unit according to another embodiment of the present invention. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] like Figures 1 to 6 As shown, the indoor unit of the air conditioner in this embodiment includes a housing 1, an air outlet component, a heat exchanger 5, a fan component, and a water collection tray 6.

[0045] The air vent component includes a top air duct vent assembly 21 located at the upper end of the housing 1.

[0046] The heat exchanger 5 is disposed within the housing 1 and located below the top air duct assembly 21. Refrigerant is introduced into the heat exchanger 5 to exchange heat with the air passing through it. When the air conditioner is cooling, the heat exchanger 5 acts as an evaporator for the refrigerant; when the air conditioner is heating, the heat exchanger 5 acts as a condenser for the refrigerant. The heat exchanger 5 includes a first heat exchange section 51 and a second heat exchange section 52 connected at one end. The first heat exchange section 51 and the second heat exchange section 52 form a positive V-shaped structure with an opening facing the top air duct assembly 21; in this embodiment, the opening of the positive V-shaped structure faces the top air duct assembly 21 located below the heat exchanger. Figures 1 to 6 As shown, one end of the first heat exchange section 51 and the second heat exchange section 52 are connected to each other, and the connected ends form a V-shaped structure at the bottom of the middle part.

[0047] In this application, "upper" and "lower" refer to the orientation of the indoor air conditioner unit after it is installed and in operation. For example, if the indoor air conditioner unit is a wall-mounted unit, the orientation is based on the position of the wall-mounted unit after it is installed on the wall. After installation, the upper end of the indoor air conditioner unit is the upper end, and the lower end is the lower end.

[0048] The fan component is housed within the casing 1 and located below the heat exchanger 5. During operation, airflow passes through the top air duct assembly 21, and the fan component drives the air into the casing 1, where it exchanges heat with the heat exchanger 5. In some embodiments, the top air duct assembly 21 is an air inlet, and the fan component drives the air into the casing from the bottom air duct assembly 21, where it then exchanges heat with the heat exchanger 5. In some embodiments, the top air duct assembly 21 is an air outlet, and the fan component drives the air into the casing, where it exchanges heat with the heat exchanger 5, and then the air exits from the top air duct assembly 21 after heat exchange.

[0049] The water collection tray 6 is used to collect the condensate from the heat exchanger 5. The water collection tray 6 is located below the interconnected ends of the first heat exchange section 51 and the second heat exchange section 52. In the embodiment shown in the figure, the water collection tray 6 is located directly below the interconnected ends of the first heat exchange section 51 and the second heat exchange section 52.

[0050] In this embodiment, the indoor unit of the air conditioner uses a V-shaped structure for the heat exchanger 5, which includes a first heat exchange section 51 and a second heat exchange section 52. The heat exchanger 5 is positioned above the fan assembly and its opening faces the top air duct assembly 21. Therefore, a single drip tray 6 at the bottom of the heat exchanger 5 is sufficient to collect the condensate, simplifying the structure, improving production and assembly efficiency, and saving costs. Furthermore, the large space between the V-shaped structure and the top air duct facilitates the layout of other air handling modules such as filters, electric heating, and sterilization.

[0051] In some embodiments, the indoor unit of the air conditioner has a first state. In the first state, when the indoor unit of the air conditioner is in operation, the fan component drives the air into the housing 1 and outputs the air to the heat exchanger 5. After the air exchanges heat with the heat exchanger 5, it flows out to the outside from the top air duct assembly 21. The water tray 6 also includes an air guide structure facing the fan component. The air guide structure is used to divide the air output by the fan component into two streams in the first state to be directed to the first heat exchange section 51 and the second heat exchange section 52, respectively.

[0052] The water tray in this embodiment also has an air guiding function. While collecting condensate, it can also make the heat exchanger more uniform and improve the heat exchange efficiency in the first state. One component has multiple functions, realizing the efficient use of structural components.

[0053] In some embodiments, such as Figures 1 to 6 As shown, the air guide structure includes a water receiving tray 6 with a first surface 61 and a second surface 62 that are interconnected and face the fan component. The first surface 61 and the second surface 62 are V-shaped with openings facing the heat exchanger 5 and cover the interconnected ends of the first heat exchange part 51 and the second heat exchange part 52.

[0054] In this embodiment, the bottom surface of the water receiving tray 6 is designed as a V-shaped first surface and a second surface, which can better match the heat exchanger 5 with the positive V-shaped structure. It can effectively divide the air output by the fan component into two streams in the first state and guide them to the first heat exchange section and the second heat exchange section. The air guiding effect is good, the structure of the water receiving tray is simple, and the effect is outstanding.

[0055] In some embodiments, the first surface 61 and the second surface 62 are S-shaped surfaces; in some embodiments, the first surface 61 and the second surface 62 are designed to be streamlined. In this embodiment, designing the first surface 61 and the second surface 62 as S-shaped surfaces helps reduce the resistance of airflow when the water tray guides airflow through the first surface 61 and the second surface 62, thereby improving airflow efficiency.

[0056] In some embodiments, the indoor unit of the air conditioner also includes a drain pipe connected to the drip tray 6. In this embodiment, because the drip tray is positioned high, the drainage pressure of the drain pipe is greater.

[0057] In some embodiments, the air outlet component further includes a bottom air duct outlet assembly 22 located at the lower end of the housing 1, and the fan component includes a mounting bracket 34 rotatably disposed relative to the housing 1, a drive component drivenly connected to the mounting bracket 34, and a cross-flow fan mounted on the mounting bracket 34. A cross-flow fan, also known as a cross-flow fan, was proposed by the French engineer Mortier in 1892. Its impeller is multi-bladed, long cylindrical, with forward-curving multi-bladed blades. The structure of a cross-flow fan includes an impeller, a baffle wall (sometimes referred to as a volute, air duct wall, air duct profile, etc.), and a volute tongue. The baffle wall partially blocks the outer circumferential surface of the impeller, and the volute tongue separates the inlet and outlet sides of the impeller's outer circumferential surface. This causes the vortex center of the vortex entering the impeller to move closer to the volute tongue. Thus, when the impeller rotates, the airflow enters from the inlet side of the impeller's outer circumferential surface that is not blocked by the baffle wall, passes through the interior of the impeller, and exits from the outlet side between the baffle wall and the volute tongue, forming the working airflow. The baffle wall and volute are both important working components of the cross-flow fan. The cross-flow fan includes an impeller 31 mounted on a mounting bracket 34 and baffle walls 33 and volutes 32 arranged opposite each other on both sides of the fan section for air outlet from the impeller 31. The indoor unit has a first state and a second state. In the first state, the outlet of the cross-flow fan's air outlet duct formed by the baffle walls 33 and volutes 32 faces the top air outlet assembly 21. In the second state, the outlet of the cross-flow fan's air outlet duct formed by the baffle walls 33 and volutes 32 faces the bottom air outlet assembly 22. A drive unit is used to drive the mounting bracket 34 to rotate relative to the housing 1, thereby switching the indoor unit between the first and second states. In this embodiment, the baffle walls 33, impeller 31, and volutes 32 are all mounted on the mounting bracket, and the mounting bracket 34 can rotate relative to the housing, for example... Figure 1The unit rotates around axis 341, thereby causing the shielding wall 33, volute tongue 32, and impeller 31 to rotate as a whole. When the air outlet duct formed by the shielding wall 33 and volute tongue 32 faces the top air outlet assembly 21, the fan unit is in the first state. The cross-flow fan draws in air from the bottom air outlet assembly 22 and delivers air to the top air outlet assembly 21 through the air outlet duct formed by the shielding wall 33 and volute tongue 32. When the air outlet duct formed by the shielding wall 33 and volute tongue 32 faces the bottom air outlet assembly 22, the fan unit is in the second state. The cross-flow fan draws in air from the bottom air outlet assembly 22 and delivers air to the bottom air outlet assembly 22 through the air outlet duct formed by the shielding wall 33 and volute tongue 32. Since the top air outlet assembly 22 and the bottom air outlet assembly 22 are located at the upper end of the housing and the other at the lower end, the indoor unit of the air conditioner in this embodiment can switch between discharging air to the upper end of the housing and discharging air to the lower end. When the indoor unit of an air conditioner is cooling or heating, the density of cold air is high, and the cold air blows downwards, which can easily lead to cold feet and a hot head, resulting in an uncomfortable experience.

[0058] In this embodiment, the indoor unit of the air conditioner switches between a first state and a second state during cooling and heating. This allows the cool air to be output from the top during cooling, avoiding direct airflow onto people, and because the cool air sinks due to gravity, it provides a more comprehensive cooling effect and greater comfort. During heating, hot air is output from the bottom; its lower density allows it to rise, improving heating uniformity and achieving a more comprehensive heating effect.

[0059] In some embodiments, the air vent component further includes a first extension wall 231 and a second extension wall 232. One end of the first extension wall 231 and the second extension wall 232 is fixedly connected to the bottom air duct assembly 22. In a second state, the outlet end of the volute tongue 32 is aligned with the end of the first extension wall 231 away from the bottom air duct assembly 22, and the outlet end of the shielding wall 33 is aligned with the end of the second extension wall 232 away from the bottom air duct assembly 22. The volute tongue 32, the shielding wall 33, the first extension wall 231 and the second extension wall 232 form an air duct for supplying air to the bottom air duct assembly 22. The alignment of the outlet end of the volute tongue 32 with the end of the first extension wall 231 away from the bottom air duct opening assembly 22 means that the outlet end of the volute tongue 32 is directly connected to the end of the first extension wall 231 away from the bottom air duct opening assembly 22, or when there is a gap between them, the extension direction of the outlet end of the volute tongue 32 is the same as the extension direction of the end of the first extension wall 231 away from the bottom air duct opening assembly 22. Similarly, the alignment of the outlet end of the shielding wall 33 with the end of the second extension wall 232 away from the bottom air duct opening assembly 22 means that the outlet end of the shielding wall 33 is directly connected to the end of the second extension wall 232 away from the bottom air duct opening assembly 22, or when there is a gap between them, the extension direction of the outlet end of the shielding wall 33 is the same as the extension direction of the end of the second extension wall 232 away from the bottom air duct opening assembly 22. Thus, in the second state, the volute tongue 32, the shielding wall 33, the first extension wall 231 and the second extension wall 232 can form an air duct that directly supplies air to the bottom air duct assembly 22.

[0060] In this embodiment, by setting a first extension wall 231 and a second extension wall 232, in the second state, the outlet end of the volute tongue and the shielding wall of the cross-flow fan faces the bottom air duct assembly 22. The first extension wall 231 and the second extension wall 232 can guide the airflow more efficiently, improving the airflow efficiency. In the first state, the outlet end of the volute tongue and the shielding wall of the cross-flow fan faces the heat exchanger. Since the heat exchanger is close, it is not necessary to set an extension wall to achieve efficient airflow to the heat exchanger. Thus, the structure switching between "long shielding wall and long volute tongue" and "short shielding wall and short volute tongue" is realized in the second state and the first state, realizing efficient and accurate airflow of the cross-flow fan, improving the airflow utilization efficiency, and the structure is compact and efficient.

[0061] In some embodiments, the bottom air duct assembly 22 includes a first air vent 221, a second air vent 222, a first air guide plate assembly for closing and opening the first air vent 221, and a second air guide plate assembly for closing and opening the second air vent 222. One end of the first extension wall 231 and the second extension wall 232 are respectively connected to both ends of the first air vent 221. In a second state, the volute tongue 32, the shielding wall 33, the first extension wall 231, and the second extension wall 232 form an air duct for supplying air to the first air vent 221. In the embodiment shown in the figure, the first air guide plate assembly includes two rotatable air guide plates, which respectively control the opening or closing of a portion of the first air vent 221. The opening or closing of the first air vent 221 can be achieved by rotating the two air guide plates. In the embodiment shown in the figure, the second air guide plate assembly includes one air guide plate.

[0062] In the second state of this embodiment, the cross-flow fan discharges air to the bottom air duct assembly 22. Since the airflow from the cross-flow fan is relatively concentrated, a single air outlet is sufficient to meet the airflow requirements. That is, only the first air outlet 221 and the first air guide plate assembly need to be opened to achieve efficient airflow. In the first state, the top air duct assembly 22 serves as the air inlet side of the cross-flow fan. Both the first and second air guide plate assemblies are open, thereby utilizing the first and second air outlets to provide airflow for the cross-flow fan. This better meets the large-area airflow requirements of the cross-flow fan, meaning this embodiment better meets the airflow discharge requirements of the cross-flow fan in the second state and the airflow intake requirements in the first state.

[0063] In some embodiments, the indoor unit of the air conditioner further includes a third extension wall 233 disposed inside the housing 1 and connected to the housing 1 at one end. The top air duct assembly 22 is located between the first extension wall 231 and the third extension wall 233. In the second state, the distance between the end of the shielding wall 33 near the heat exchanger and the end of the third extension wall 233 away from the housing 1 is less than a first preset distance to block the air flowing in from the top air duct assembly from flowing between the shielding wall 33 and the third extension wall 233. In the second state, the distance between the end of the shielding wall 33 away from the heat exchanger and the end of the third extension wall 233 away from the housing 1 is less than a first preset distance. This distance can be 0 or a small distance. The first preset distance can be set to a value close to 0 or a small value, so that when the distance between the shielding wall and the third extension wall 233 is less than the first preset distance in the second state, the shielding wall and the third extension wall 233 can completely block the airflow or block most of the airflow. The smaller the value of the first preset distance, the better the blocking effect. The specific selection of the first preset value can be set according to the blocking effect to be achieved.

[0064] In this embodiment, by setting a third extension wall 233, in the second state, the third extension wall and the shielding wall 33 can deliver more air from the top air duct assembly to the air inlet side of the cross-flow fan, preventing air from passing between the third extension wall and the shielding wall, thereby improving the air inlet efficiency of the cross-flow fan.

[0065] In some embodiments, the volute tongue 32 has a U-shaped structure, including a first plate and a second plate located at both ends, and an intermediate plate arranged circumferentially along the impeller 31 connecting the first plate and the second plate. In a second state, the distance between the free end of the first plate and the first extension wall 231 is less than a second preset distance to prevent wind from flowing between the free end of the first plate and the first extension wall 231. In a first state, the distance between the free end of the second plate and the third extension wall 233 is less than a third preset distance to prevent wind from flowing between the free end of the third plate and the third extension wall 233. The methods for selecting the values ​​of the second preset distance and the third preset distance are similar to the methods for selecting the first preset distance.

[0066] This embodiment designs the volute tongue as a U-shaped structure, which can meet the requirements of the second preset distance and the third preset distance in the second state. Thus, in the second state, the volute tongue and the first extension wall can guide more of the air outlet of the cross-flow fan to the bottom air duct assembly, thereby improving the air outlet efficiency. In the first state, more of the air inlet of the bottom air duct assembly is introduced into the air inlet side of the cross-flow fan, thereby improving the air inlet efficiency of the cross-flow fan.

[0067] In some embodiments, the indoor unit of the air conditioner is a wall-mounted air conditioner. In this embodiment, the heat exchanger, fan assembly, and bottom air duct assembly of the wall-mounted air conditioner are all arranged vertically. That is, when the wall-mounted air conditioner is installed on the wall, the bottom air duct, heat exchanger, and fan assembly are arranged vertically. This reduces the horizontal dimensions of the wall-mounted air conditioner, i.e., reduces its width, thereby facilitating the layout of the wall-mounted air conditioner, reducing the horizontal space occupied, and also making it more aesthetically pleasing.

[0068] 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, include: Shell (1); The air vent component includes a top air vent assembly (21) located at the upper end of the housing (1). A heat exchanger (5) is disposed inside the housing (1) and located below the top air duct assembly (21). The heat exchanger (5) includes a first heat exchange section (51) and a second heat exchange section (52) connected at one end to each other. The first heat exchange section (51) and the second heat exchange section (52) form a positive V-shaped structure with the opening facing the top air duct assembly (21). The fan component is located inside the housing (1) and below the heat exchanger (5); A water receiving tray (6) is used to receive the condensate from the heat exchanger (5) and is located below the interconnected ends of the first heat exchange section (51) and the second heat exchange section (52). During the air supply operation, the air flows through the top air duct assembly (21), the fan component drives the air into the housing (1), and the air exchanges heat with the heat exchanger (5) during the flow within the housing (1).

2. The air conditioner indoor unit as described in claim 1, characterized in that, The indoor unit of the air conditioner has a first state. In the first state, when the indoor unit of the air conditioner is working, the fan component drives the air into the housing (1) and outputs the air to the heat exchanger (5). After the air exchanges heat with the heat exchanger (5), it flows out from the top air duct assembly (21) to the outside. The water receiving tray (6) also includes an air guiding structure facing the fan component. The air guiding structure is used to divide the air output by the fan component into two streams in the first state to guide the air to the first heat exchange section (51) and the second heat exchange section (52) respectively.

3. The air conditioner indoor unit as described in claim 2, characterized in that, The air guide structure includes a first surface (61) and a second surface (62) of the water receiving tray (6) facing the fan component. The first surface (61) and the second surface (62) are V-shaped with openings facing the heat exchanger (5) and wrap around the interconnected ends of the first heat exchange part (51) and the second heat exchange part (52).

4. The air conditioner indoor unit as described in claim 3, characterized in that, The first surface (61) and the second surface (62) are S-shaped surfaces.

5. The air conditioner indoor unit as described in claim 1, characterized in that, The air outlet component also includes a bottom air duct assembly (22) located at the lower end of the housing (1). The fan component includes a mounting bracket (34) rotatably disposed relative to the housing (1), a drive component drivenly connected to the mounting bracket (34), and a cross-flow fan mounted on the mounting bracket (34). The cross-flow fan includes an impeller (31) mounted on the mounting bracket (34) and baffles (33) and volutes (32) arranged opposite to each other on both sides of the fan unit for air outlet of the impeller (31). The air conditioning indoor unit The unit has a first state and a second state. In the first state, the outlet of the air duct of the cross-flow fan formed by the shielding wall (33) and the volute tongue (32) faces the top air duct assembly (21). In the second state, the outlet of the air duct of the cross-flow fan formed by the shielding wall (33) and the volute tongue (32) faces the bottom air duct assembly (22). The drive member is used to drive the mounting bracket (34) to rotate relative to the housing (1) so that the air conditioning indoor unit switches between the first state and the second state.

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). One end of the first extension wall (231) and the second extension wall (232) is fixedly connected to the bottom air duct assembly (22). In the second state, the outlet end of the volute tongue (32) is aligned with the end of the first extension wall (231) away from the bottom air duct assembly (22), and the outlet end of the shielding wall (33) is aligned with the end of the second extension wall (232) away from the bottom air duct assembly (22). The volute tongue (32), the shielding wall (33), the first extension wall (231), and the second extension wall (232) form an air duct that supplies air to the bottom air duct assembly (22).

7. The air conditioner indoor unit as described in claim 6, characterized in that, The bottom air duct assembly (22) includes a first air duct (221), a second air duct (222), a first air guide plate assembly for closing and opening the first air duct (221), and a second air guide plate assembly for closing and opening the second air duct (222). One end of the first extension wall (231) and the second extension wall (232) are respectively connected to both ends of the first air duct (221). In the second state, the volute tongue (32), the shielding wall (33), the first extension wall (231), and the second extension wall (232) form an air duct that supplies air to the first air duct (221).

8. The air conditioner indoor unit as described in claim 6, characterized in that, It also includes a third extension wall (233) disposed inside the housing (1) and connected to the housing (1) at one end. The top air duct assembly (21) is located between the first extension wall (231) and the third extension wall (233). In the second state, the distance between the end of the shielding wall (33) near the heat exchanger and the end of the third extension wall (233) away from the housing (1) is less than a first preset distance to block the air flowing in from the top air duct assembly from flowing between the shielding wall (33) and the third extension wall (233).

9. The air conditioner indoor unit as described in claim 8, characterized in that, The volute tongue (32) has a U-shaped structure. The volute tongue (32) includes a first plate and a second plate located at both ends, and an intermediate plate arranged along the circumference of the impeller (31) connecting the first plate and the second plate. In the second state, the distance between the free end of the first plate and the first extension wall (231) is less than a second preset distance to block the wind from flowing between the free end of the first plate and the first extension wall (231). In the first state, the distance between the free end of the second plate and the third extension wall (233) is less than a third preset distance to block the wind from flowing between the free end of the second plate and the third extension wall (233).

10. The air conditioner indoor unit as described in claim 1, characterized in that, The indoor unit of the air conditioner is a wall-mounted air conditioner.

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