Air conditioner indoor unit

Abstract

The utility model provides an air conditioner indoor unit, including the casing. The casing is provided with first side air outlet, second side air outlet, top air outlet and lower air outlet. First side air outlet sets up on one lateral wall of casing, and second side air outlet sets up on another lateral wall. Top air outlet sets up on the top of casing. Lower air outlet sets up on the front wall of casing, and lower air outlet sets up on the downside of first side air outlet and second side air outlet. The casing is provided with air duct, and the air duct has main air duct section, first air duct section, second air duct section and third air duct section connected to the front end of main air duct section, and fourth air duct section and fifth air duct section connected to the front end of third air duct section. First air duct section is connected to first side air outlet, second air duct section is connected to second side air outlet, fourth air duct section is connected to top air outlet, and fifth air duct section is connected to lower air outlet. The first side air outlet, second side air outlet, top air outlet and lower air outlet can have multiple air outlet modes.

Description

Technical Field

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

[0002] Currently, the indoor unit of a standing air conditioner typically has only one air outlet on the front surface of the unit's casing, resulting in a single air outlet mode that is difficult to meet users' needs for multiple air outlet modes. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an indoor unit of an air conditioner that overcomes or at least partially solves the above problems, and has multiple air outlet modes to meet the diverse air supply needs of users.

[0004] Specifically, this utility model provides an indoor unit for an air conditioner, including a housing;

[0005] The housing is provided with a first side air outlet, a second side air outlet, a top air outlet, and a bottom air outlet; the first side air outlet and the second side air outlet both extend vertically, the first side air outlet is located on one side wall of the housing, and the second side air outlet is located on the other side wall of the housing; the top air outlet is located at the top of the housing; the bottom air outlet is located on the front wall of the housing, and the bottom air outlet is located below the first side air outlet and the second side air outlet;

[0006] The housing is provided with an air duct, which has a main air duct section, a first air duct section, a second air duct section and a third air duct section connected to the front end of the main air duct section, and a fourth air duct section and a fifth air duct section connected to the front end of the third air duct section.

[0007] The first air duct section is connected to the first side air outlet, the second air duct section is connected to the second side air outlet, the fourth air duct section is connected to the top air outlet, and the fifth air duct section is connected to the bottom air outlet.

[0008] Optionally, a front air outlet is also provided on the front wall of the housing, and the front air outlet is located at the front end of the third air duct section.

[0009] Optionally, the indoor unit of the air conditioner further includes:

[0010] An air guide plate is rotatably disposed at the front air outlet and configured to open or close the front air outlet, or to guide airflow forward and downward.

[0011] Optionally, the top air outlet extends horizontally, and the bottom air outlet extends horizontally;

[0012] The front air outlet extends vertically; or, there are multiple front air outlets, each extending horizontally, and the multiple front air outlets are arranged sequentially vertically, with the length of each front air outlet being less than the length of the top air outlet and less than the length of the bottom air outlet.

[0013] Optionally, the indoor unit of the air conditioner further includes:

[0014] The first opening and closing device is located at the lower end of the fourth air duct section and is configured to open or close the fourth air duct section.

[0015] The second opening and closing device is located at the upper end of the fifth air duct section and is configured to open or close the fifth air duct section.

[0016] Optionally, the main air duct section includes a first section and a second section; the first section is located below the second section; the first section is connected to both the first and second air duct sections; and the second section is connected to the third air duct section.

[0017] Optionally, the ratio between the length of the second segment and the length of the first segment is 1 / 3 to 1;

[0018] The length of the first side air outlet is equal to the length of the second side air outlet;

[0019] The front air outlet extends vertically, and the ratio between the length of the front air outlet and the length of the first side air outlet is 1 / 3 to 1; or, there are multiple front air outlets, each of which extends horizontally, and the multiple front air outlets are arranged sequentially vertically, with the ratio between the distance between the upper edge of the uppermost front air outlet and the lower edge of the lowermost front air outlet and the length of the first side air outlet being 1 / 3 to 1.

[0020] Optionally, the indoor unit of the air conditioner further includes:

[0021] An evaporator is disposed within the housing;

[0022] The housing is also provided with an air inlet that communicates with the main air duct section, and the evaporator is located at the air inlet;

[0023] The evaporator includes a first evaporation section and a second evaporation section, with the first evaporation section disposed below the second evaporation section; the first evaporation section is disposed corresponding to the first section, and the second evaporation section is disposed corresponding to the second section;

[0024] The first evaporator and the second evaporator are connected to a flow divider, which is configured to control the amount of refrigerant entering the first evaporator and the second evaporator.

[0025] Optionally, the main air duct section includes a first air duct wall and a second air duct wall disposed opposite to each other; the first air duct section is connected to the first air duct wall, and the second air duct section is connected to the second air duct wall; the second air duct wall is configured such that the flow direction of the airflow in the main air duct section is toward the side of the housing with the first side air outlet; the angle of change of the flow direction of the airflow from the main air duct section under the action of the second air duct section is greater than the angle of change under the action of the first air duct section.

[0026] Optionally, the indoor unit of the air conditioner further includes:

[0027] The first air distribution plate is curved; a portion of the first air distribution plate is located within the main air duct section, and another portion is located within the second air duct section; the surface of the first air distribution plate facing the second air duct wall is a concave surface.

[0028] The second air distribution plate is curved; the second air distribution plate is located on the side of the first air distribution plate away from the second air duct wall, and the surface of the second air distribution plate facing the first air distribution plate is a concave surface; the curvature of the first air distribution plate is greater than that of the second air distribution plate; the second air distribution plate is located within the main air duct section, and the air outlet edge of the second air distribution plate is close to the connection between the front air duct wall of the first air duct section and the front air duct wall of the second air duct section;

[0029] The third air distribution plate extends upward from the upper end of the first air distribution plate, and the cross-section of the third air distribution plate is the same as that of the first air distribution plate.

[0030] The fourth air distribution plate extends upward from the upper end of the second air distribution plate, and the cross-section of the fourth air distribution plate is the same as that of the second air distribution plate.

[0031] In this utility model, the indoor unit of an air conditioner has a first side air outlet, a second side air outlet, a top air outlet, and a bottom air outlet on its casing, providing multiple airflow modes. Compared to a vertical air conditioner indoor unit with only a front air outlet, it can meet various user airflow needs. The first and second side air outlets allow airflow to exit from both sides of the casing, increasing the angle of the blown airflow and achieving a wraparound airflow effect. When heating, the heating airflow is blown out from the bottom air outlet, preventing the heating airflow from not touching the ground and achieving carpet-like heating, avoiding the situation of the head being hot and the feet being cold. When cooling, the cooling airflow is blown out from the top air outlet and then flows from top to bottom, achieving a waterfall-like cooling effect.

[0032] Furthermore, when the user activates the heating mode, a portion of the heating airflow within the main air duct section passes through the first and second air duct sections, exiting from the first and second side air outlets respectively, forming a wraparound airflow. At this time, the air guide plate and the first opening and closing device are closed, and another portion of the heating airflow within the main air duct section passes through the third and fifth air duct sections before exiting from the lower air outlet, creating a carpet-like heating effect. The heating airflow, by blowing to the sides and forward, forms three turbulent airflows within the space, enabling rapid heating. When the user activates the cooling mode, if the user selects the direct-blowing mode, the first and second opening and closing devices can be closed. A portion of the cooling airflow within the main air duct section passes through the third air duct section and exits from the front air outlet, creating a direct-blowing effect. Another portion of the airflow within the main air duct section exits from the first and second side air outlets, achieving a wraparound cooling effect. The combination of these two effects creates a wraparound cooling and forward direct airflow effect. If the user selects the waterfall cooling mode, the air guide vane and the second opening / closing device can be closed. A portion of the cooling airflow within the main air duct section passes through the third and fourth air duct sections before exiting through the top air outlet. This cooling airflow flows downwards, creating a waterfall cooling effect. The remaining airflow within the main air duct section exits through the first and second side air outlets, achieving a wraparound cooling effect. The combination of these two methods creates both wraparound and waterfall cooling effects.

[0033] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0034] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0035] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0036] Figure 2 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0037] Figure 3 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0038] Figure 4 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0039] Figure 5This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0040] Figure 6 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model. Detailed Implementation

[0041] The following reference Figures 1 to 6 This description pertains to the indoor unit of an air conditioner according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0042] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, and refer to Figures 2 to 6 The arrows in the diagram indicate the airflow direction. This embodiment of the invention provides an indoor unit for an air conditioner, including a housing 100. The housing 100 is provided with a first side air outlet 110, a second side air outlet 170, a top air outlet 130, and a bottom air outlet 140. Both the first side air outlet 110 and the second side air outlet 170 extend vertically. The first side air outlet 110 is located on one side wall of the housing 100, and the second side air outlet 170 is located on the other side wall of the housing 100. The top air outlet 130 is located at the top of the housing 100. The bottom air outlet is located on the front wall of the housing 100, and the bottom air outlet 140 is located below the first side air outlet 110 and the second side air outlet 170. An air duct is provided inside the housing 100. The air duct has a main air duct section 120, a first air duct section 123, a second air duct section 124, and a third air duct section 127 connected to the front end of the main air duct section 120, and a fourth air duct section 125 and a fifth air duct section 126 connected to the front end of the third air duct section 127. The first air duct section 123 is connected to a first side air outlet 110, the second air duct section 124 is connected to a second side air outlet 170, the fourth air duct section 125 is connected to a top air outlet 130, and the fifth air duct section 126 is connected to a bottom air outlet 140.

[0046] The casing 100 is equipped with a first side air outlet 110, a second side air outlet 170, a top air outlet 130, and a bottom air outlet 140, providing multiple airflow modes. Compared to a vertical air conditioner indoor unit with only a front air outlet 150, it can meet various user airflow needs. The first side air outlet 110 and the second side air outlet 170 allow airflow to flow out from both sides of the casing 100, increasing the angle of the blown airflow and achieving a wraparound airflow effect. When heating, the heating airflow is blown out from the bottom air outlet 140, preventing the heating airflow from not touching the ground and achieving carpet-like heating, avoiding the situation of the head being hot and the feet being cold. When cooling, the cooling airflow is blown out from the top air outlet 130, and then the cooling airflow flows from top to bottom, achieving a waterfall-like cooling effect with minimal air loss.

[0047] In some embodiments of this utility model, such as Figure 1 As shown, a front air outlet 150 is also provided on the front wall of the housing 100, and the front air outlet 150 is located at the front end of the third air duct section 127. The front air outlet 150 allows the outflowing air to blow forward, so that the indoor unit of the air conditioner can also reach the user located in front of the indoor unit of the air conditioner.

[0048] In some embodiments of this utility model, such as Figure 2 As shown, the indoor unit of the air conditioner also includes an air guide plate 200, which is rotatably disposed at the front air outlet 150 and configured to open or close the front air outlet 150, or to guide airflow forward and downward. The air guide plate 200 can both open and close the front air outlet 150 and guide airflow downward.

[0049] In some embodiments of this utility model, such as Figure 1 As shown, the top air outlet 130 extends horizontally, and the bottom air outlet 140 extends horizontally. That is to say, both the top air outlet 130 and the bottom air outlet 140 extend horizontally, which helps to expand the horizontal air outlet width of the top and bottom air outlets and facilitates the rapid adjustment of the indoor temperature.

[0050] In some embodiments of this utility model, the front air outlet 150 extends in the vertical direction.

[0051] The front air outlet extends vertically by 150, which helps to make the airflow flowing forward uniform in the vertical direction and avoids temperature stratification in the vertical direction.

[0052] Alternatively, in some other embodiments of this utility model, such as Figure 1 As shown, there are multiple front air outlets 150, each extending horizontally, and multiple front air outlets 150 are arranged sequentially in the vertical direction. The length of each front air outlet 150 is less than the length of the top air outlet 130 and less than the length of the bottom air outlet 140.

[0053] In some embodiments of this utility model, such as Figure 1As shown, the indoor unit of the air conditioner also includes a first opening and closing device 300 and a second opening and closing device 400. The first opening and closing device 300 is located at the lower end of the fourth air duct section 125 and is configured to open or close the fourth air duct section 125. The second opening and closing device 400 is located at the upper end of the fifth air duct section 126 and is configured to open or close the fifth air duct section 126. The first opening and closing device 300 is used to control whether airflow flows out of the top air outlet 130, and the second opening and closing device 400 is used to control whether airflow flows out of the lower air outlet 140. The front air outlet 150, the top air outlet 130, and the lower air outlet 140, all of which are connected to the third air duct section 127, can selectively determine which air outlet blows air. For example, when the first opening / closing device 300 and the second opening / closing device 400 are closed, the airflow of the third air duct section 127 blows out from the front air outlet 150. When the first opening / closing device 300 and the air guide plate 200 are closed, the airflow of the third air duct section 127 blows out from the lower air outlet 140. When the air guide plate 200 and the second opening / closing device 400 are closed, the airflow of the third air duct section 127 blows out from the top air outlet 130. That is to say, the front air outlet 150, the top air outlet 130, and the lower air outlet 140 can each blow out airflow individually. Of course, when the first opening / closing device 300, the second opening / closing device 400, and the air guide plate 200 are opened, the airflow of the third air duct section 127 blows out from the front air outlet 150, the top air outlet 130, and the lower air outlet 140. That is to say, the front air outlet 150, the top air outlet 130, and the lower air outlet 140 blow out airflow simultaneously. Alternatively, the first opening / closing device 300 can be closed, and the second opening / closing device 400 and the air guide plate 200 can be opened, allowing the airflow of the third air duct section 127 to exit from the front air outlet 150 and the lower air outlet 140. The second opening / closing device 400 can be closed, and the first opening / closing device 300 and the air guide plate 200 can be opened, allowing the airflow of the third air duct section 127 to exit from the front air outlet 150 and the top air outlet 130. The air guide plate 200 can be closed, and the first opening / closing device 300 and the second opening / closing device 400 can be opened, allowing the airflow of the third air duct section 127 to exit from the top air outlet 130 and the lower air outlet 140.

[0054] When the user turns on the heating mode, such as Figure 4 As shown, a portion of the heating airflow within the main air duct section 120 passes through the first air duct section 123 and the second air duct section 124, and is blown out from the first side air outlet 110 and the second side air outlet 170 respectively, forming a wraparound airflow. At this time, the air guide plate 200 and the first opening and closing device 300 are closed, and another portion of the heating airflow within the main air duct section 120 passes through the third air duct section 127 and the fifth air duct section 126 successively before being blown out from the lower air outlet 140, creating a carpet heating effect. The heating airflow, by blowing out to the sides and forward, forms three heating airflows with turbulence in the space, which can achieve rapid heating.

[0055] When the user turns on the cooling mode, such as Figure 6As shown, if the user selects the direct-blowing mode, the first and second opening / closing devices 300 and 400 can be closed. A portion of the cooling airflow within the main air duct section 120 passes through the third air duct section 127 and is blown out from the front air outlet 150, creating a direct-blowing effect. Another portion of the airflow within the main air duct section 120 is blown out from the first and second side air outlets, achieving a wraparound cooling effect. The combination of these two creates a wraparound cooling effect and a forward direct airflow effect. If the user selects the waterfall cooling mode, as... Figure 5 As shown, the air guide plate 200 and the second opening / closing device 400 can be closed. A portion of the cooling airflow within the main air duct section 120 passes through the third air duct section 127 and the fourth air duct section 125 before being blown out from the top air outlet 130. The cooling airflow blowing out from the top air outlet 130 flows downwards, creating a waterfall cooling effect. Another portion of the airflow within the main air duct section 120 is blown out from the first and second side air outlets, achieving a wraparound cooling effect. The combination of these two elements creates both wraparound cooling and waterfall cooling effects.

[0056] In some embodiments of this utility model, the main air duct section 120 includes a first section and a second section. The first section is located below the second section. The first section is connected to the first air duct section 123 and the second air duct section 124. The second section is connected to the third air duct section 127.

[0057] The design of the first and second sections ensures that the airflow between the upper and lower sections within the main duct will not interfere with each other.

[0058] In some embodiments of this invention, the height ratio between the second segment and the first segment is 1 / 3 to 1. For example, the height ratio between the second segment and the first segment is 1 / 3, 1 / 2, 2 / 3, and 1, etc.

[0059] In some embodiments of this utility model, such as Figure 1 As shown, the length of the first side air outlet 110 is equal to the length of the second side air outlet 170. This arrangement is both aesthetically pleasing and conducive to uniform airflow from both sides. The front air outlet 150 extends vertically, and the ratio between the length of the front air outlet 150 and the length of the first side air outlet 110 is 1 / 3 to 1. For example, the ratio between the length of the front air outlet 150 and the length of the first side air outlet 110 is 1 / 3, 1 / 2, 2 / 3, and 1, etc. That is to say, the length of the upper air outlet can account for 1 / 2, 1 / 3, or 1 / 4 of the total duct length.

[0060] Alternatively, in some embodiments of this utility model, such as Figure 1As shown, there are multiple front air outlets 150, each of which extends horizontally and is arranged sequentially vertically. The ratio between the upper edge of the uppermost front air outlet 150 and the lower edge of the lowermost front air outlet 150 and the length of the first side air outlet 110 is 1 / 3 to 1.

[0061] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the indoor unit of the air conditioner also includes an evaporator 500, which is disposed inside the housing 100. The housing 100 is also provided with an air inlet 160 that communicates with the main air duct section 120, and the evaporator 500 is disposed at the air inlet 160.

[0062] The airflow flowing in through the air inlet 160 exchanges heat with the evaporator 500 and becomes either a heating airflow or a cooling airflow. After passing through the main air duct section 120, the heating airflow or cooling airflow is blown out from the first side air outlet 110, the second side air outlet 170, the front air outlet 150, the lower air outlet 140 and the top air outlet 130.

[0063] Furthermore, in some embodiments of this utility model, the evaporator 500 includes a first evaporation section and a second evaporation section, with the first evaporation section disposed below the second evaporation section. The first evaporation section is disposed corresponding to a first section, and the second evaporation section is disposed corresponding to a second section. A flow-dividing device is connected to the first evaporation section and the second evaporation section, and the flow-dividing device is configured to control the amount of refrigerant entering the first evaporation section and the second evaporation section.

[0064] The indoor unit of the air conditioner has a separate control mode to control the operation of the distribution device. In cooling mode, the user can activate the separate control mode, such as... Figure 6 As shown, the first and second evaporators operate simultaneously. The first and second side air outlets 170 blow out cooling airflow to form a surrounding airflow, while the front air outlet 150 blows out cooling airflow forward, enabling the indoor unit to cool quickly and the room temperature to reach the set temperature as soon as possible. Once the indoor unit detects that the room temperature has reached the set temperature, the distribution device controls the refrigerant to prevent it from entering the first evaporator, and the first evaporator stops cooling. The first and second side air outlets 170 then blow out room temperature airflow, forming a surrounding airflow for user comfort. The distribution device controls the refrigerant to enter the second evaporator normally, and the second evaporator cools normally. Cooling airflow is blown out from the front air outlet 150 and the top air outlet 130 to maintain the room temperature. This setup reduces cooling capacity loss after the set temperature is reached, maintains the indoor temperature, and ensures user comfort while using the air conditioner, providing a noticeable breeze – a triple benefit.

[0065] In some embodiments of this utility model, the diversion device can be a control valve.

[0066] In some embodiments of this utility model, such as Figure 3 As shown, the main air duct section 120 includes a first air duct wall 121 and a second air duct wall 122 disposed opposite to each other. The first air duct section 123 is connected to the first air duct wall 121, and the second air duct section 124 is connected to the second air duct wall 122. The second air duct wall 122 is configured such that the airflow direction within the main air duct section 120 is towards the side of the housing 100 having the first side air outlet 110. The angle of change of the airflow direction from the main air duct section 120 under the action of the second air duct section 124 is greater than the angle of change under the action of the first air duct section 123.

[0067] The tangent at the front end of the second air duct wall 122 faces the first air duct section 123, causing the airflow on one side of the second air duct wall 122 to flow towards the inlet of the first air duct. Therefore, the second air duct wall 122 is configured such that the airflow direction within the main air duct section 120 faces the side of the housing 100 with the first air outlet. Here, the angle at which the airflow direction within the main air duct section 120 changes under the action of the second air duct section 124 is greater than the angle at which it changes under the action of the first air duct section 123. This means that the forward angle between the airflow direction within the main air duct section 120 and the airflow direction within the second air duct section 124 is greater than the forward angle between the airflow direction within the main air duct section 120 and the airflow direction within the first air duct section 123. This arrangement increases the resistance to airflow entering the second air duct section 124, resulting in less airflow exiting the second side air outlet 170 compared to the first side air outlet 110.

[0068] In some embodiments of this utility model, such as Figure 3 As shown, the indoor unit of the air conditioner includes a first air distribution plate 610 and a second air distribution plate 620. The first air distribution plate 610 is curved. A portion of the first air distribution plate 610 is located within the main air duct section 120, and another portion is located within the second air duct section 124. The surface of the first air distribution plate 610 facing the second air duct wall 122 is a concave surface. The second air distribution plate 620 is curved. The second air distribution plate 620 is located on the side of the first air distribution plate away from the second air duct wall 122, and the surface of the second air distribution plate 620 facing the first air distribution plate 610 is a concave surface. The curvature of the first air distribution plate 610 is greater than that of the second air distribution plate 620. The second air distribution plate 620 is located within the main air duct section 120, and the air outlet edge of the second air distribution plate 620 is near the junction of the front air duct wall of the first air duct section 123 and the front air duct wall of the second air duct section 124.

[0069] To ensure balanced airflow between the second side air outlet 170 and the first side air outlet 110, the second air distribution plate 620 divides the airflow from the main air duct section 120 into two approximately equal parts. One part of the airflow, guided by the first air distribution plate 610 on the surface of the second air distribution plate 620 facing the first air distribution plate 610, enters the second air duct section 124. The other part of the airflow, guided by the surface of the second air distribution plate 620 away from the first air distribution plate 610, enters the first air duct section 123. The first air distribution plate 610 guides a portion of the airflow from the main air duct section 120 into the second air duct section 124. By setting the first air distribution plate 610, the resistance to airflow from the main air duct section 120 into the second air duct section 124 is reduced, making the airflow into the first air duct section 123 and the second air duct section 124 similar. Furthermore, this makes the airflow from the first side air outlet 110 and the second side air outlet 170 similar, resulting in balanced airflow from the left and right sides of the indoor unit of the air conditioner. The degree of curvature represents the ability to guide airflow to change direction. The fact that the degree of curvature of the first air distribution plate 610 is greater than that of the second air distribution plate 620 indicates that the first air distribution plate 610 has a greater ability to guide airflow to change direction than the second air distribution plate 620.

[0070] In some embodiments of this utility model, such as Figure 3 As shown, the indoor unit of the air conditioner also includes a third air distribution plate and a fourth air distribution plate. The third air distribution plate extends upward from the upper end of the first air distribution plate 610, and the cross-section of the third air distribution plate is the same as the cross-section of the first air distribution plate 610. The fourth air distribution plate extends upward from the upper end of the second air distribution plate 620, and the cross-section of the fourth air distribution plate is the same as the cross-section of the second air distribution plate 620.

[0071] The third and fourth air distribution plates ensure that the airflow from the third air duct section 127 is uniform in the lateral direction, and consequently, the airflow is also uniform in the lateral direction when it blows towards the fourth air duct section 125 and the fifth air duct section 126. In particular, for the horizontally extending lower air outlet 140, the airflow blown from the lower air outlet 140 is made uniform in the lateral direction, enabling rapid heating when the airflow is a heating airflow.

[0072] In some embodiments of this utility model, such as Figure 3 As shown, the indoor unit of the air conditioner also includes a fifth air distribution plate 630. The fifth air distribution plate 630 is disposed on the side of the second air distribution plate 620 opposite to the first air distribution plate 610. The fifth air distribution plate 630 is curved, and the surface of the fifth air distribution plate 630 facing the second air distribution plate 620 is a concave surface. The fifth air distribution plate 630 facilitates the guidance of airflow into the first air duct section.

[0073] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, Includes the casing; The housing is provided with a first side air outlet, a second side air outlet, a top air outlet, and a bottom air outlet; the first side air outlet and the second side air outlet both extend vertically, the first side air outlet is located on one side wall of the housing, and the second side air outlet is located on the other side wall of the housing; the top air outlet is located at the top of the housing; the bottom air outlet is located on the front wall of the housing, and the bottom air outlet is located below the first side air outlet and the second side air outlet; The housing is provided with an air duct, which has a main air duct section, a first air duct section, a second air duct section and a third air duct section connected to the front end of the main air duct section, and a fourth air duct section and a fifth air duct section connected to the front end of the third air duct section. The first air duct section is connected to the first side air outlet, the second air duct section is connected to the second side air outlet, the fourth air duct section is connected to the top air outlet, and the fifth air duct section is connected to the bottom air outlet.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The front wall of the housing is also provided with a front air outlet, which is located at the front end of the third air duct section.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, Also includes: An air guide plate is rotatably disposed at the front air outlet and configured to open or close the front air outlet, or to guide airflow forward and downward.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The top air outlet extends horizontally, and the bottom air outlet extends horizontally. The front air outlet extends vertically; or, there are multiple front air outlets, each extending horizontally, and the multiple front air outlets are arranged sequentially vertically, with the length of each front air outlet being less than the length of the top air outlet and less than the length of the bottom air outlet.

5. The indoor unit of the air conditioner according to claim 2, characterized in that, Also includes: The first opening and closing device is located at the lower end of the fourth air duct section and is configured to open or close the fourth air duct section. The second opening and closing device is located at the upper end of the fifth air duct section and is configured to open or close the fifth air duct section.

6. The indoor unit of the air conditioner according to claim 2, characterized in that, The main air duct section includes a first section and a second section; the first section is located below the second section; the first section is connected to both the first and second air duct sections; and the second section is connected to the third air duct section.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The ratio between the length of the second segment and the length of the first segment is 1 / 3 to 1; The length of the first side air outlet is equal to the length of the second side air outlet; The front air outlet extends vertically, and the ratio between the length of the front air outlet and the length of the first side air outlet is 1 / 3 to 1; or, there are multiple front air outlets, each of which extends horizontally, and the multiple front air outlets are arranged sequentially vertically, with the ratio between the distance between the upper edge of the uppermost front air outlet and the lower edge of the lowermost front air outlet and the length of the first side air outlet being 1 / 3 to 1.

8. The indoor unit of the air conditioner according to claim 6, characterized in that, Also includes: An evaporator is disposed within the housing; The housing is also provided with an air inlet that communicates with the main air duct section, and the evaporator is located at the air inlet; The evaporator includes a first evaporation section and a second evaporation section, with the first evaporation section disposed below the second evaporation section; the first evaporation section is disposed corresponding to the first section, and the second evaporation section is disposed corresponding to the second section; The first evaporator and the second evaporator are connected to a flow divider, which is configured to control the amount of refrigerant entering the first evaporator and the second evaporator.

9. The indoor unit of the air conditioner according to claim 6, characterized in that, The main air duct section includes a first air duct wall and a second air duct wall arranged opposite to each other; the first air duct section is connected to the first air duct wall, and the second air duct section is connected to the second air duct wall; the second air duct wall is configured such that the flow direction of the airflow in the main air duct section is towards the side of the housing with the first side air outlet; the angle of change of the flow direction of the airflow from the main air duct section under the action of the second air duct section is greater than the angle of change under the action of the first air duct section.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, Also includes: The first air distribution plate is curved; a portion of the first air distribution plate is located within the main air duct section, and the other portion is located within the second air duct section. The surface of the first air distribution plate facing the second air duct wall is a concave surface; The second air distribution plate is curved; the second air distribution plate is located on the side of the first air distribution plate away from the second air duct wall, and the surface of the second air distribution plate facing the first air distribution plate is a concave surface; the curvature of the first air distribution plate is greater than that of the second air distribution plate; the second air distribution plate is located within the main air duct section, and the air outlet edge of the second air distribution plate is close to the connection between the front air duct wall of the first air duct section and the front air duct wall of the second air duct section; The third air distribution plate extends upward from the upper end of the first air distribution plate, and the cross-section of the third air distribution plate is the same as that of the first air distribution plate. The fourth air distribution plate extends upward from the upper end of the second air distribution plate, and the cross-section of the fourth air distribution plate is the same as that of the second air distribution plate.

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