Air conditioner indoor unit and heating and ventilation system

Abstract

The utility model discloses an air conditioner indoor unit and a heating and ventilation system, the air conditioner indoor unit comprises a shell, an air return port and an air outlet of an air duct are formed in the bottom face of the shell at intervals, the air duct comprises an air outlet part connected with the air outlet, and the air outlet part comprises a first wall body and a second wall body which are arranged in the first direction at intervals; the fan and the indoor heat exchanger are arranged in the air duct at intervals; the air guide structure comprises an air guide plate, the air guide plate is rotationally connected with the shell and located between the first wall body and the second wall body, the air guide plate is provided with a first air guide face and a second air guide face which are arranged back to back in the thickness direction of the air guide plate, and under the condition that the air guide plate is opened, the first air guide face faces the first wall body, and the second air guide face faces the second wall body; wherein part of the second wall body is arched in the direction away from the air guide plate to form an air guide wall face of a curved surface structure, the air guide wall face can guide airflow to flow along the second air guide face, and the situation that condensation occurs on the air guide plate can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air-conditioning indoor unit and a heating and ventilation system. Background Art

[0002] The air outlet of an existing air conditioner is usually provided with an air guide plate. The user can control the flow direction of the airflow at the air outlet by controlling the opening angle of the air guide plate, so that the airflow of the air conditioner can flow in the direction expected by the user, thereby improving the indoor temperature environment.

[0003] However, when the angle between the air guide plate and the airflow is too large, airflow loss will occur. An airflow separation area is generated on the second air guide surface of the air guide plate, where the air velocity is low, and indoor hot and humid air gathers and stays here, causing local condensation. Utility Model Content

[0004] The embodiments of the present application provide an air-conditioning indoor unit and a HVAC system, which can avoid condensation on an air guide plate.

[0005] In a first aspect, an embodiment of the present application provides an indoor unit of an air conditioner, comprising a housing, a duct being formed therein, and a return air port and an air outlet of the duct being spaced apart on a bottom surface of the housing, wherein the duct comprises an air outlet portion connected to the air outlet, and the air outlet portion comprises a first wall body and a second wall body spaced apart from each other;

[0006] A fan and an indoor heat exchanger are arranged in the air duct at intervals; and

[0007] The wind guide structure comprises a wind guide plate, wherein the wind guide plate is rotatably connected to the housing and is located between the first wall and the second wall, and the wind guide plate always has a gap with the second wall during the rotation process, and the wind guide plate has a first wind guide surface and a second wind guide surface which are arranged opposite to each other in the thickness direction thereof, and when the wind guide plate is opened, the first wind guide surface faces the first wall, and the second wind guide surface faces the second wall;

[0008] Part of the second wall is arched away from the wind guide plate to form a wind guide wall surface with a curved structure, and the wind guide wall surface is configured to guide the airflow to flow along the second wind guide surface when the wind guide plate is opened.

[0009] In a possible implementation, the air guide wall surface is concave to form an air guide cavity;

[0010] When the air guide plate is open, the air guide plate swings between a maximum swing angle position and a minimum swing angle position; and, when the air guide plate is at the maximum swing angle position, one end of the air guide plate close to the second wall body is located above the air guide cavity, and when the air guide plate is at the minimum swing angle position, one end of the air guide plate close to the second wall body is located in the air guide cavity.

[0011] In one possible implementation, the second air guide surface is a curved surface, and one end of the air guide plate close to the second wall body is warped in a direction away from the air outlet, so that the curvature of the second air guide surface close to the second wall body is close to the curvature of the cavity wall of the air guide cavity.

[0012] In a possible implementation, the curvature of the entire second air guiding surface is similar to the curvature of the cavity wall of the air guiding cavity.

[0013] In one possible implementation, the end of the first wind guide surface away from the second wall body includes an wind guide tail section, wherein in the direction away from the second wall body, the wind guide tail section is gradually arranged toward the second wind guide surface so that the distance between the wind guide tail section and the second wind guide surface gradually decreases.

[0014] In a possible implementation, a contour line obtained by the intersection of the wind guide wall surface and a vertical section perpendicular to the axial direction of the fan is defined to include an endpoint A and an endpoint B, wherein endpoint A is located above endpoint B, and an end of a contour line obtained by the intersection of the second wind guide surface and a vertical section perpendicular to the axial direction of the fan, which is close to the second wall, is defined as endpoint C;

[0015] The distance between the endpoint C and the line connecting the endpoint A and the endpoint B is 3 mm to 5 mm.

[0016] In a possible implementation, the minimum distance between the end point B and the second wind guide surface is 3 mm to 5 mm.

[0017] In a possible implementation, the distance between the end point C and the wind guide wall is 0.1 mm to 3 mm.

[0018] In a possible implementation, the second wall body further includes a guide surface connected between the wind guide wall surface and the air outlet, the guide surface is formed as an arc surface, and a curvature direction of the guide surface is opposite to a curvature direction of the wind guide wall surface.

[0019] In a possible implementation manner, the distance between the first wall body and the second wall body is arranged to increase in a direction approaching the air outlet.

[0020] In a possible implementation manner, the second wind guiding surface is a curved surface.

[0021] In a possible implementation, in the air flow direction of the air duct, the fan is located downstream of the indoor heat exchanger, and the air outlet is arranged between the fan and the air outlet.

[0022] Based on the indoor unit of the air conditioner of the embodiment of the present application, the return air port and the air outlet of the air duct are arranged at intervals on the bottom surface of the shell, so as to improve the smoothness of the return air and the air outlet. In addition, by setting the air guide surface, the air flow streamline can flow along the second air guide surface of the air guide plate, so as to avoid the stagnation and backflow of the air flow in the back plate area of ​​the air guide plate, and reduce the possibility of condensation of moisture in the air there. The present application can not only improve the efficiency and performance of the air conditioning system, but also avoid unnecessary troubles caused by condensation problems, and ensure the normal operation and service life of the air conditioning equipment.

[0023] In a second aspect, an embodiment of the present application provides a HVAC system, comprising an outdoor unit and the above-mentioned air-conditioning indoor unit, wherein the air-conditioning indoor unit is connected to the outdoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a structural schematic diagram of a situation where the air guide plate of an indoor unit of an air conditioner according to an embodiment of the present application is at a first opening and closing angle;

[0026] Figure 2 for Figure 1 Schematic diagram of airflow simulation in FIG.

[0027] Figure 3 This is a structural schematic diagram of a situation where the air guide plate of an indoor unit of an air conditioner according to an embodiment of the present application is at a second opening and closing angle;

[0028] Figure 4 It is a simulation diagram of the airflow direction in 3;

[0029] Figure 5 This is a partial schematic diagram of an air conditioner indoor unit according to an embodiment of the present application;

[0030] Figure 6 This is a structural schematic diagram of an air-conditioning indoor unit according to another embodiment of the present application;

[0031] Figure 7 for Figure 6Schematic side view of the central air guide structure.

[0032] Description of Figure Numbers:

[0033] 1000, air conditioner indoor unit; 100, air guide structure; 10, air guide plate; 11, first air guide surface; 11a, air guide tail section; 12, second air guide surface; 30, swing blade;

[0034] 200, shell; 210, shell body; 220, panel; 300, air duct; 310, air outlet; 311, first wall; 312, second wall; 3121, air guide wall; 3122, air guide cavity; 3123, flow guide surface; 320, air outlet; 330, return air outlet; 400, fan; 500, indoor heat exchanger.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0037] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0038] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] The embodiment of the present application proposes an air-conditioning indoor unit 1000 and a HVAC system, which includes an outdoor unit and an air-conditioning indoor unit 1000, the outdoor unit and the air-conditioning indoor unit 1000 are connected by a pipeline, and a working medium for heat exchange circulates in the outdoor unit and the air-conditioning indoor unit 1000 through the pipeline.

[0041] The outdoor unit includes a compressor and an outdoor heat exchanger, and the compressor and the outdoor heat exchanger are connected to the air conditioner indoor unit 1000 through pipelines. The air conditioner indoor unit 1000 can be installed in a location such as an indoor ceiling or wall to adjust the indoor temperature environment. It can be in the form of a duct unit or a ceiling unit, etc., and the embodiment of the present application is not limited to this.

[0042] See also Figures 1 to 3 The air conditioner indoor unit 1000 includes a housing 200, a fan 400, an indoor heat exchanger 500 and an air guide structure 100. The housing 200 is provided with an air duct 300. In the front-to-back direction YY, the bottom surface of the housing 200 is provided with a return air port 330 and an air outlet 320 of the air duct 300 at intervals, and is provided with a return air port 330 and an air outlet 320 located at both ends of the air duct 300 and connected to the air duct 300. The indoor heat exchanger 500 and the fan 400 are both provided in the air duct 300, and the air guide structure 100 is provided at the air outlet 320.

[0043] For ease of description, in this application, an up-down direction ZZ, a front-back direction YY, and a left-right direction XX are defined, and the up-down direction ZZ, the front-back direction YY, and the left-right direction XX are arranged at an angle to each other.

[0044] The housing 200 is connected to the indoor ceiling or wall to provide a mounting base for other structural components in the air conditioner indoor unit 1000. The housing 200 can be in a variety of shapes according to actual needs. For example, the housing 200 can be roughly rectangular for easy installation. The housing 200 is structured to form the above-mentioned air duct 300 for gas flow. The air duct 300 extends along the front-to-back direction YY. The return air port 330 is arranged at the rear part of the housing 200, and the air outlet 320 is arranged at the front part of the housing 200, so that the gas can enter the air duct 300 through the return air port 330, and move from back to front to pass through the fan 400 and the indoor heat exchanger 500, and then flow out through the air outlet 320.

[0045] Please refer to Figure 1In some embodiments, for ease of assembly, the housing 200 includes a housing body 210 and a panel 220, the fan 400 and the indoor heat exchanger 500 are both installed in the housing body 210, the housing body 210 is connected to the panel 220 to enclose the above-mentioned air duct 300, wherein the panel 220 is provided with the above-mentioned air outlet 320, and the return air outlet 330 can be provided on the panel 220 or the housing body 210. Exemplarily, the air conditioner indoor unit 1000 is installed on the ceiling, the ceiling is provided with an installation opening, the housing body 210 is arranged above the ceiling, and the panel 220 is arranged below the housing body 210 and connected to the housing body 210. At least part of the panel 220 is exposed at the installation opening, and in the exposed part, the air outlet 320 and the return air outlet 330 are arranged at intervals on the panel 220 along the front-to-back direction YY to ensure the smoothness of the return air and the outlet air. In this way, the shell 200 of the embodiment of the present application is not only convenient for the assembly of the air-conditioning indoor unit 1000, but also when performing maintenance, the fan 400, the indoor heat exchanger 500 and other components can be exposed by directly removing the panel 220 without disassembling the entire air-conditioning indoor unit 1000, thereby improving the maintenance efficiency.

[0046] In the embodiment of the present application, the shell body 210 and the panel 220 can be made of metal materials such as aluminum alloy or stainless steel to meet the requirements of high strength and corrosion resistance; or, the shell body 210 and the panel 220 can also be made of plastic materials to achieve the lightweight of the air duct 300 assembly, and the present application does not limit this. For example, the shell body 210 can be made of metal material, and the panel 220 can be made of plastic material. In addition, the embodiment of the present application does not limit the connection method of the shell body 210 and the panel 220, and they can be connected individually or in combination by means of clamping, riveting, welding and bolting.

[0047] The fan 400 is disposed in the air duct 300 and is capable of extracting gas at the return air port 330 and performing work on the gas to provide power for the gas circulation in the air duct 300. The fan 400 may be a cross-flow fan 400, a centrifugal fan 400, or an axial flow fan 400, etc. Figure 1 As shown, in one embodiment, the fan 400 may be a cross-flow fan 400, which has the advantages of energy saving, large air volume, low noise and simple installation. In this embodiment, the fan 400 includes an impeller and a motor. The impeller is arranged in a long cylindrical shape extending along the left-right direction XX. The motor is arranged at one end of the impeller and connected to the housing 200, and the output shaft of the motor is connected to the impeller. One side of the impeller in the circumferential direction is arranged roughly toward the return air port 330, and this side of the impeller is defined as the air inlet side; the other side of the impeller in the circumferential direction, which is spaced apart from the air inlet side, is arranged roughly toward the air outlet 320, and this side of the impeller is defined as the air outlet side. There are multiple blades distributed along the circumference of the impeller. When the motor drives the impeller to rotate, the rotating blades can cause the gas to flow from the air inlet side to the air outlet side.

[0048] The indoor heat exchanger 500 can be arranged on the side of the fan 400 close to the air outlet 320 or the side of the fan 400 close to the return air outlet 330, and is used to perform heat exchange with the gas flowing through the air duct 300 and passing through the indoor heat exchanger 500, so as to cool or heat the gas. For example, a plurality of refrigerant pipes are provided in the indoor heat exchanger 500, and the plurality of refrigerant pipes are connected to the outdoor unit, and the refrigerant flows in the indoor heat exchanger 500. When passing through the indoor heat exchanger 500, the gas exchanges heat with the refrigerant in the refrigerant pipe, so that the temperature is reduced to form low-temperature air. Optionally, in order to improve the heat exchange efficiency, the indoor heat exchanger 500 can be arranged in a shape, an arc or a wave shape, and can be composed of a single heat exchange plate, or a combination of multiple heat exchange plates. In the case of Figure 1 In the illustrated embodiment, the return air inlet 330 is disposed below the housing 200, and the indoor heat exchanger 500 is disposed at an angle. On the one hand, the inclined arrangement allows the indoor heat exchanger 500 and the gas flowing therethrough to have a larger heat exchange area, and on the other hand, it can also reduce the angle between the airflow entering from the return air inlet 330 and the indoor heat exchanger 500, so that the airflow can pass through the indoor heat exchanger 500 more smoothly, thereby further improving the heat exchange efficiency.

[0049] The air duct 300 includes an air outlet portion 310 connected to the air outlet 320, and the air outlet portion 310 includes a first wall body 311 and a second wall body 312 that are relatively spaced apart. In the present application, the first wall body 311 and the second wall body 312 can be spaced apart in the front-to-back direction YY. Among them, in the airflow direction of the air duct 300, the fan 400 is located downstream of the indoor heat exchanger 500, and the air outlet portion 310 is arranged between the fan 400 and the air outlet 320. The air guide structure 100 includes an air guide plate 10, which is rotatably connected to the shell 200 and is located between the first wall body 311 and the second wall body 312. The air guide plate 10 is used to adjust the airflow direction and airflow rate at the air outlet 320. Among them, please refer to Figure 1 and Figure 3 During the rotation process, the air guide plate 10 always has a gap with the second wall 312, so as to avoid interference between the air guide plate 10 and the air outlet portion 310 when the air guide plate 10 is working.

[0050] The wind guide plate 10 has a first wind guide surface 11 and a second wind guide surface 12 which are arranged opposite to each other. When the wind guide plate 10 is opened, the first wind guide surface 11 is close to the first wall 311, and the second wind guide surface 12 is close to the second wall 312. Part of the second wall 312 is arched away from the wind guide plate 10 to form a wind guide wall surface 3121 with a curved surface structure. The wind guide wall surface 3121 is configured to guide the airflow to flow along the second wind guide surface 12 when the wind guide plate 10 is opened.

[0051] Based on the air conditioner indoor unit 1000 of the embodiment of the present application, by setting the wind guide wall 3121, the air flow streamline can flow along the second wind guide surface 12 of the wind guide plate 10, which can avoid the stagnation and backflow of air flow on the second wind guide surface 12 of the wind guide plate 10, and reduce the possibility of moisture in the air condensing here. Figure 1 and Figure 2 When the air guide plate 10 is at the minimum opening and closing angle, the air guide wall surface 3121 can guide the air flow to the second air guide surface 12, so that the air flow can be smoothly discharged from the air outlet 320 to the outside; please refer to Figure 3 and Figure 4 When the air guide plate 10 is at the maximum opening angle, the air flow can also be smoothly discharged to the outside from the air outlet 320. The embodiment of the present application can not only improve the efficiency and performance of the air conditioning system, but also avoid unnecessary troubles caused by condensation problems, and ensure the normal operation and service life of the air conditioning equipment.

[0052] In some structural forms, the second wall 312 of the air outlet 310 can be formed on the outer side of the water receiving tray, and the first wall 311 of the air outlet 310 can be formed on the inner side of the shell 200. It can be understood that the water receiving tray is used to receive the condensed water generated by the indoor heat exchanger 500 during the heat exchange operation and discharge the condensed water. The water receiving tray is arranged at the bottom of the indoor heat exchanger 500. In this way, after the water receiving tray and the shell 200 are installed, the above-mentioned air outlet 310 can be formed. In some other embodiments, the second wall 312 of the air outlet 310 can also be formed on the panel 220, or the water receiving tray and the panel 220 are integrally formed. Here, the present application does not limit the specific molding method of the air outlet 310.

[0053] In some embodiments of this application, please refer to Figure 5 The wind guide wall surface 3121 is recessed to form a wind guide cavity 3122. When the wind guide plate 10 is opened, the wind guide plate 10 swings between the maximum swing angle position and the minimum swing angle position. Figure 1 The wind deflector 10 is shown in the state of the maximum swing angle position. Figure 5The figure shows that the air guide plate 10 is in the state of the minimum swing angle position. When the air guide plate 10 is in the maximum swing angle position, the end of the air guide plate 10 close to the second wall 312 is located above the air guide cavity 3122. When the air guide plate 10 is in the minimum swing angle position, the end of the air guide plate 10 close to the second wall 312 is located in the air guide cavity 3122. When the air guide plate 10 is in the maximum swing angle position, the extension directions of the first air guide surface 11 and the second air guide surface 12 in the air guide plate 10 are both relatively close to the air outlet direction of the air outlet portion 310. At this time, the end of the air guide plate 10 close to the second wall 312 is located above the air guide cavity 3122. The airflow can flow relatively smoothly along the first air guide surface 11 and the second air guide surface 12 to avoid condensation. In this process, the airflow passing through the air guide cavity 3122 and the airflow impact generated by the air guide cavity 3122 will not cause any condensation in the process. Negative impact, when the air guide plate 10 is in the minimum swing angle position, since the end of the air guide plate 10 close to the second wall 312 is located in the air guide cavity 3122, the air flow in the air guide cavity 3122 has already contacted the second air guide surface 12 before flowing out of the air guide cavity 3122, and can flow out along the guidance of the second air guide surface 12 as much as possible. Therefore, in this process, the setting of the air guide cavity 3122 can enable the air flow to wrap the second air guide surface 12 of the air guide plate 10 as much as possible, and the gas can flow out roughly along the second air guide surface 12.

[0054] For further information, please refer to Figure 1 and Figure 5 , the contour line obtained by the intersection of the wind guide wall 3121 and the vertical section perpendicular to the axial direction of the fan 400 includes endpoint A and endpoint B, wherein endpoint A is located above endpoint B, and the contour line obtained by the intersection of the second wind guide surface 12 and the vertical section perpendicular to the axial direction of the fan 400 is defined, and the end close to the second wall 312 is endpoint C; wherein the distance between endpoint C and the line connecting endpoints A and endpoint B is 0.1mm to 3mm. For such a setting, please refer to Figure 2 , which can ensure smooth passage of airflow, reduce resistance and turbulence, and improve the efficiency of the air guide plate 10 in guiding airflow.

[0055] In some embodiments of this application, please refer to Figure 2 and Figure 3 The minimum distance between the end point B and the second wind guiding surface 12 is 3 mm to 5 mm, which can ensure smooth passage of airflow, reduce resistance and turbulence, and improve the efficiency of airflow guidance.

[0056] In some embodiments of this application, please refer to Figure 5, the minimum distance between the end point C and the wind guide wall 3121 is 3mm to 5mm. In this way, the airflow can be effectively passed through. By maintaining a certain distance, the airflow can be effectively passed through the wind guide wall 3121, and the friction and resistance between the airflow and the wind guide wall 3121 can be reduced, which helps to reduce energy loss, improve the efficiency of the air conditioning system, save energy and reduce operating costs.

[0057] See also Figure 1 , the second wind guide surface 12 is a curved surface, and the end of the wind guide plate 10 close to the second wall body 312 is warped in the direction away from the air outlet 320, so that the curvature of the part of the second wind guide surface 12 close to the second wall body 312 is close to the curvature of the cavity wall of the wind guide cavity 3122. Such a configuration can make the airflow closer to the second wind guide surface 12 and the cavity wall of the wind guide cavity 3122, increase the surface area of ​​the airflow in contact with the solid surface, and thus enhance the influence of the wall attachment effect. It should be noted that the wall attachment effect is a common phenomenon in the fluid flow process, which refers to the phenomenon that the fluid stagnates near the surface due to the action of viscous force when it contacts the solid surface. Such a configuration, the present application can make the airflow form a relatively stable flow state at the surface of the second wind guide surface 12, reduce the occurrence of turbulence, thereby improving the stability of the fluid, which is conducive to reducing the turbulent loss of the fluid system and improving the stability and efficiency of the airflow.

[0058] Furthermore, the curvature of the entire second air guiding surface 12 is similar to the curvature of the cavity wall of the air guiding cavity 3122. By making the curvature of the second air guiding surface 12 similar to the curvature of the cavity wall of the air guiding cavity 3122, the airflow can flow more stably near the air guiding plate 10 and flow more closely along the curved surface.

[0059] See also Figure 5 , the end of the first wind guide surface 11 away from the second wall 312 includes a wind guide tail section 11a, wherein in the direction away from the second wall 312, the wind guide tail section 11a is gradually arranged close to the second wind guide surface 12, so that the distance between the wind guide tail section 11a and the second wind guide surface 12 is gradually reduced. It can be understood that since the wind guide plate 10 has a certain thickness, the distance between the first wind guide surface 11 and the second wind guide surface 12 is relatively large. When the airflow passes through the first wind guide surface 11 and the second wind guide surface 12, it is easy to generate airflow vortices at the end of the wind guide plate 10. The wind guide tail section 11a provided in the present application can guide the airflows on the opposite sides of the wind guide plate 10 to smoothly merge, improve the flow state of the airflow, and reduce the loss and dissipation of wind energy.

[0060] In some embodiments of this application, please refer to Figure 5The second wall 312 also includes a guide surface 3123 connected between the wind guide wall 3121 and the air outlet 320. The guide surface 3123 is formed as an arc surface, and the arch direction of the guide surface 3123 is opposite to the arch direction of the wind guide wall 3121. The guide surface 3123 with an arc surface design can effectively guide the airflow from the wind guide wall 3121 to the air outlet 320, and make the airflow diffuse over a wider range. The arch direction of the guide surface 3123 is opposite to that of the wind guide wall 3121, which can make the airflow diffuse more evenly when passing through the air outlet 320, and cover a wider range. Expanding the diffusion range of the airflow at the air outlet 320 can improve the comfort of the air conditioning system. Uniform airflow distribution can avoid the situation where the local temperature is too high or too low, provide a more uniform indoor temperature and humidity, and enhance the user's comfort. Expanding the airflow diffusion range helps to improve the ventilation effect in the space. By making the airflow cover a wider area, air convection and fresh air delivery can be achieved more effectively, improving indoor air quality and promoting indoor air flow and circulation.

[0061] Furthermore, the guide surface 3123 has a starting endpoint and an ending endpoint, wherein the starting endpoint of the guide surface 3123 can coincide with the endpoint B of the wind guide wall 3121, and in the front-to-back direction YY, the ending endpoint of the guide surface 3123 is farther away from the first wall body 311 relative to the starting endpoint. Such a setting can further improve the airflow diffusion range.

[0062] In some embodiments of the present application, the distance between the first wall 311 and the second wall 312 is increased in the direction close to the air outlet 320. Such a configuration can change the flow state and speed of the airflow, so that the gas can produce a state of pressure reduction, expansion and dispersion during the flow process, so that the airflow can achieve better distribution and uniformity.

[0063] In some embodiments of the present application, the second air guide surface 12 is a curved surface that is arched outward. The curved second air guide surface 12 can more effectively guide the airflow to flow along its surface. Since the curved surface can more accurately control the direction and speed of the airflow, the effect of guiding the airflow can be improved, making the air flow smoother. Compared with the flat second air guide surface 12, the curved second air guide surface 12 can reduce the resistance of the airflow. The curved surface design can reduce the friction between the airflow and the second air guide surface 12, thereby reducing the energy consumption of the system and improving the efficiency of the air conditioning system. Of course, the first air guide surface 11 can be set as a concave curved surface, so that the effect of guiding the airflow is smoother.

[0064] To change the airflow direction in the up-down direction ZZ and in the left-right direction XX, refer to Figure 6 and Figure 7The wind guide structure 100 further includes a plurality of swing blades 30 and a driving assembly (not shown in the figure), and the driving assembly is used to drive the wind guide plate 10 and the plurality of swing blades 30 to swing. The wind guide plate 10 can swing along the up-down direction ZZ, and the swing blades 30 can swing along the left-right direction XX. In the embodiment of the present application, the driving assembly includes a first driving member, a second driving member, and a mounting seat.

[0065] The mounting seat is connected to the housing 200 to provide a mounting base for the first drive member and the second drive member. The mounting seat can be made of metal to ensure structural strength and support; or, the mounting seat can be made of plastic to facilitate production and lightness. Optionally, the mounting seat is roughly disc-shaped, with a mounting groove located in the middle part, and the first drive member and the second drive member are fixed in the mounting groove. The two sides of the mounting seat can be connected to the housing 200 by a detachable connection method such as screw connection, snap connection, etc., which ensures the stability of the mounting seat while facilitating disassembly and assembly.

[0066] The first driving member is connected to the air guide plate 10, and can drive the air guide plate 10 to swing along the up-down direction ZZ. For example, the first driving member can be a stepping motor, which is convenient for accurately controlling the swing angle of the air guide plate 10. Specifically, the first driving member has an output end that can rotate around an axis extending along the left-right direction XX, and the air guide plate 10 is connected to the output end of the first driving member, so that when the output end of the first driving member rotates around the axis, the air guide plate 10 can also rotate around the axis extending along the left-right direction XX, thereby realizing the swing wind in the up-down direction.

[0067] The second driving member is connected to a plurality of swinging blades 30, and can drive the plurality of swinging blades 30 to swing along the left-right direction XX. Exemplarily, the second driving member can be selected as a linear motor or a cylinder, and has an output end that can reciprocate along the left-right direction XX, and the plurality of swinging blades 30 are connected to the output end and swing back and forth along the left-right direction XX accordingly. Alternatively, the second driving member can also adopt a stepping motor with a rotatable output end, and drive the plurality of swinging blades 30 to swing by transmission, so as to realize the swinging of wind in the left-right direction, and the embodiment of the present application is not limited to this.

[0068] The air guide plate 10 can be formed by integral plastic injection molding, which has high production efficiency and is light in weight and easy to drive. Figure 2 As shown, the air guide plate 10 has a substantially rectangular plate structure, one end of which is connected to the output end of the first driving member, so as to change the angle between the air guide plate 10 and the air flow at the air outlet 320 as the output end of the first driving member rotates, thereby swinging the air up and down. Figure 1In the embodiment shown, the air outlet 320 is opened toward the bottom of the housing 200. If the air guide plate 10 rotates clockwise around the axis extending along the left-right direction XX, the angle between the air guide plate 10 and the airflow at the air outlet 320 increases, and the air guide plate 10 blocks the movement of the airflow toward the bottom of the housing 200 to a certain extent, so that the airflow flows toward the front side of the housing 200 along the air guide plate 10. On the contrary, if the air guide plate 10 rotates counterclockwise around the axis extending along the left-right direction XX, the angle between the air guide plate 10 and the airflow at the air outlet 320 decreases, and the airflow can flow toward the bottom of the housing 200 along the air guide plate 10. It can be understood that the larger the angle between the air guide plate 10 and the airflow, the larger the angle between the airflow direction and the up-down direction ZZ, and the more the airflow flows toward the front of the housing 200; and the smaller the angle between the air guide plate 10 and the airflow, the smaller the angle between the airflow direction and the up-down direction ZZ, and the more the airflow flows toward the bottom of the housing 200. Furthermore, in order to improve the stability of the air guide structure 100, a connecting shaft is provided at one end of the air guide plate 10 away from the mounting seat, and the connecting shaft is rotatably connected to the housing 200. In this way, the direction of the airflow at the air outlet 320 in the pitch direction can be adjusted by swinging the air guide plate 10, and the coverage range of the airflow at the air outlet 320 can be adjusted.

[0069] A plurality of swing blades 30 are rotatably connected to one side of the air guide plate 10, and are arranged at intervals along the left-right direction XX. The swing blades 30 are roughly plate-shaped and can be made of materials such as plastic. The side of the swing blade 30 close to the air guide plate 10 is connected to the air guide plate 10 through a rotating shaft, and the swing blade 30 is connected to the output end of the second driving member. When the output end of the second driving member moves, the swing blade 30 can swing around the above-mentioned rotating shaft relative to the air guide plate 10 with the above-mentioned rotating shaft as the rotation center. The plurality of swing blades 30 are arranged at intervals to divide the airflow on one side of the air guide plate 10 into a plurality of parts, and when the plurality of swing plates rotate relative to the air guide plate 10, the airflow moves along the swing plates and changes direction. For example, when the plurality of swing blades 30 are parallel to the front-rear direction YY, the airflow flowing out of the air outlet 320 can flow roughly along the front-rear direction YY; if the plurality of swing blades 30 swing to the left relative to the air guide plate 10, the airflow flowing out of the air outlet 320 flows toward the left side of the air outlet 320; if the plurality of swing blades 30 swing to the right relative to the air guide plate 10, the airflow flowing out of the air outlet 320 flows toward the right side of the air outlet 320. In this way, by providing the plurality of swing blades 30, the air sweeping along the left-right direction XX is realized.

[0070] It should be noted that the first driving member and the second driving member can operate independently, and thus can be:

[0071] The first driving member is in operation, and the second driving member is not in operation. At this time, the air guide plate 10 swings, and the plurality of swing blades 30 move along the swinging direction of the air guide plate 10, while the plurality of swing blades 30 are stationary relative to the air guide plate 10, so as to adjust the pitch angle of the airflow in a fixed left-right direction;

[0072] The first driving member is not working, and the second driving member is working. At this time, the air guide plate 10 is stationary, and the plurality of swing blades 30 swing left and right relative to the air guide plate 10 to adjust the left and right direction of the airflow at a fixed pitch angle;

[0073] Alternatively, the first driving member and the second driving member work simultaneously, and then the air guide plate 10 swings, and the multiple swing blades 30 move along the swinging direction of the air guide plate 10, and the multiple swing blades 30 swing left and right relative to the air guide plate 10 to simultaneously adjust the pitch angle and left and right direction of the airflow.

[0074] In the embodiment of the present application, the plurality of swing blades 30 are connected to the air guide plate 10, and the space interval between the plurality of swing blades 30 and the air guide plate 10 is eliminated, making the structure more compact, thereby improving the space utilization rate, reducing the space occupied by the plurality of swing blades 30 and the air guide plate 10, and facilitating the ultra-thin design of the air conditioner indoor unit 1000. Since the plurality of wind guide blades are rotatably connected to the wind guide plate 10, and the wind guide plate 10 and the plurality of swing blades 30 are driven by the first driving member and the second driving member respectively, when the wind guide plate 10 swings, the plurality of swing blades 30 can also swing relative to the wind guide plate 10 to change the flow direction of the airflow on the front side of the wind guide plate 10, thereby ensuring the working performance of the wind guide plate 10 and the swing blades 30 while reducing the occupied space.

[0075] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0076] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An air conditioner indoor unit, characterized in that: include: A shell body is formed with an air duct, and a return air port and an air outlet of the air duct are arranged at intervals on the bottom surface of the shell body, wherein the air duct includes an air outlet portion connected to the air outlet, and the air outlet portion includes a first wall body and a second wall body arranged at an interval relative to each other; A fan and an indoor heat exchanger are arranged in the air duct at intervals; and The wind guide structure comprises a wind guide plate, wherein the wind guide plate is rotatably connected to the housing and is located between the first wall and the second wall, and the wind guide plate always has a gap with the second wall during the rotation process, and the wind guide plate has a first wind guide surface and a second wind guide surface which are arranged opposite to each other in the thickness direction thereof, and when the wind guide plate is opened, the first wind guide surface faces the first wall, and the second wind guide surface faces the second wall; Part of the second wall is arched away from the wind guide plate to form a wind guide wall surface with a curved structure, and the wind guide wall surface is configured to guide the airflow to flow along the second wind guide surface when the wind guide plate is opened.

2. The air conditioner indoor unit according to claim 1, characterized in that: The air guide wall surface is concave to form an air guide cavity; When the air guide plate is open, the air guide plate swings between a maximum swing angle position and a minimum swing angle position; and, when the air guide plate is at the maximum swing angle position, one end of the air guide plate close to the second wall body is located above the air guide cavity, and when the air guide plate is at the minimum swing angle position, one end of the air guide plate close to the second wall body is located in the air guide cavity.

3. The air conditioner indoor unit according to claim 2, characterized in that: The second wind guide surface is a curved surface, and one end of the wind guide plate close to the second wall is warped in a direction away from the air outlet, so that the curvature of the second wind guide surface close to the second wall is close to the curvature of the cavity wall of the wind guide cavity.

4. The air conditioner indoor unit according to claim 3, characterized in that: The curvature of the entire second air guiding surface is similar to the curvature of the cavity wall of the air guiding cavity.

5. The air conditioner indoor unit according to claim 3, characterized in that: The end of the first wind guide surface away from the second wall body includes a wind guide tail section, wherein in the direction away from the second wall body, the wind guide tail section is gradually arranged to approach the second wind guide surface so that the distance between the wind guide tail section and the second wind guide surface gradually decreases.

6. The air conditioner indoor unit according to claim 2, characterized in that: The contour line obtained by the intersection of the wind guide wall surface and the vertical section perpendicular to the axial direction of the fan is defined to include an endpoint A and an endpoint B, wherein endpoint A is located above endpoint B, and the contour line obtained by the intersection of the second wind guide surface and the vertical section perpendicular to the axial direction of the fan is defined to have an end close to the second wall as endpoint C; The distance between the endpoint C and the line connecting the endpoint A and the endpoint B is 3 mm to 5 mm.

7. The air conditioner indoor unit according to claim 6, characterized in that: The minimum distance between the end point B and the second wind guiding surface is 3 mm to 5 mm.

8. The air conditioner indoor unit according to claim 6, characterized in that: The distance between the end point C and the wind guide wall is 0.1 mm to 3 mm.

9. The air conditioner indoor unit according to claim 1, characterized in that: The second wall body further includes a flow guiding surface connected between the wind guiding wall surface and the air outlet, the flow guiding surface is formed as an arc surface, and the curvature direction of the flow guiding surface is opposite to the curvature direction of the wind guiding wall surface.

10. The air conditioner indoor unit according to any one of claims 1 to 9, characterized in that: The distance between the first wall body and the second wall body increases in a direction approaching the air outlet.

11. The air conditioner indoor unit according to any one of claims 1 to 9, characterized in that: In the air flow direction of the air duct, the fan is located downstream of the indoor heat exchanger, and the air outlet is arranged between the fan and the air outlet.

12. A HVAC system, characterized in that: include: Outdoor unit; and The air conditioning indoor unit according to any one of claims 1 to 11, wherein the air conditioning indoor unit is connected to the outdoor unit.

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