Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit. The air conditioner indoor unit comprises a unit body, and the unit body comprises a shell, a first air outlet, a second air outlet, a return air inlet and an air duct arranged in the shell, the first air outlet is formed in the front side of the shell. The second air outlet is formed in the bottom of the shell. The return air inlet is formed in the top of the shell. The air inlet end of the air duct communicates with the air return opening. The air outlet end of the air duct communicates with at least one of the first air outlet and the second air outlet. In the refrigeration mode, the air outlet end of the air duct communicates with the first air outlet, discomfort caused by direct blowing of cold air to the human body is effectively reduced, in the heating mode, the air outlet end of the air duct communicates with the second air outlet, it is guaranteed that hot air flows downwards and directly reaches the ground, and the good heating effect and use experience are achieved. In conclusion, cold air can be conveyed upwards, hot air can be conveyed downwards, and the use comfort of a user is remarkably improved.

Description

Technical Field

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

[0002] Conventional wall-mounted air conditioner indoor units use a single air outlet structure, with the outlet located on the bottom side of the unit. Both cooling and heating air are blown out through this outlet. Because the outlet is located at the bottom of the unit, in cooling mode, the cold air can easily blow directly onto people, causing discomfort and potentially leading to air conditioning sickness over time. Even adjusting the angle of the air deflector to change the airflow direction cannot completely solve this problem.

[0003] It should be noted that the statements in this background section only provide background information relevant to this application and do not necessarily constitute prior art. Utility Model Content

[0004] This application provides an indoor air conditioning unit to improve user comfort.

[0005] The first aspect of this application provides an indoor unit for an air conditioner, comprising:

[0006] The body includes an outer shell, a first air outlet, a second air outlet, and a return air outlet disposed on the outer shell, and an air duct disposed inside the outer shell. The first air outlet is disposed on the front side of the outer shell, the second air outlet is disposed on the bottom of the outer shell, and the return air outlet is disposed on the top of the outer shell. The air inlet end of the air duct is connected to the return air outlet, and the air outlet end of the air duct is connected to at least one of the first air outlet and the second air outlet.

[0007] In some embodiments, the indoor unit of the air conditioner further includes a duct wall for forming an air duct and a reversing plate disposed within the housing. The duct wall includes a first wall disposed near the rear side of the housing and a second wall disposed near the front side of the housing. The gap between the bottom end of the first wall and the bottom end of the second wall forms an air outlet. The first end of the reversing plate is rotatably connected to the housing so that the second end of the reversing plate can move to different positions of the air outlet of the air duct.

[0008] In some embodiments, the indoor unit of the air conditioner has a first air outlet state and a second air outlet state. In the first air outlet state, the second end of the reversing plate overlaps the bottom end of the first wall so that the air outlet end is connected to the first air outlet and disconnected from the second air outlet. In the second air outlet state, the second end of the reversing plate overlaps the bottom end of the second wall so that the air outlet end is connected to the second air outlet and disconnected from the first air outlet.

[0009] In some embodiments, a stepped structure is provided at the bottom end of the first wall, and in the first air outlet state, the second end of the reversing plate overlaps at the stepped structure to make the reversing plate smoothly transition with the first wall.

[0010] In some embodiments, the indoor unit of the air conditioner also has a third air outlet state, in which the second end of the reversing plate moves to a position such that the air duct is connected to both the first air outlet and the second air outlet.

[0011] In some embodiments, the indoor unit of the air conditioner also includes a baffle located on the front side of the housing and slidably disposed on the housing. When air is discharged from the first air outlet, the baffle slides upward relative to the housing so that the upper end of the baffle extends out relative to the top of the housing.

[0012] In some embodiments, the two ends of the baffle along the length of the housing are configured to be bent toward the housing.

[0013] In some embodiments, when the first air outlet is closed, the upper end of the baffle is flush with the top of the housing.

[0014] Based on the technical solution provided in this application, an air conditioner indoor unit includes a body, which comprises an outer casing, a first air outlet, a second air outlet, and a return air outlet disposed on the outer casing, and an air duct disposed within the outer casing. The first air outlet is located on the front side of the outer casing. The second air outlet is located on the bottom of the outer casing. The return air outlet is located on the top of the outer casing. The air inlet end of the air duct is connected to the return air outlet. The air outlet end of the air duct is connected to at least one of the first and second air outlets. In cooling mode, the air outlet end of the air duct is connected to the first air outlet, which in turn connects the return air outlet to the first air outlet, effectively reducing the discomfort caused by cold air blowing directly onto the human body. In heating mode, the air outlet end of the air duct is connected to the second air outlet, which in turn connects the return air outlet to the second air outlet, thereby ensuring that hot air flows downwards and reaches the ground, resulting in better heating effect and user experience. In summary, by setting the first and second air outlets at different positions on the outer casing, and allowing the air outlet end of the air duct to be selectively connected to the two air outlets, the indoor unit of the air conditioner can achieve upward delivery of cold air and downward delivery of hot air, significantly improving user comfort.

[0015] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an indoor air conditioning unit according to some embodiments of this application.

[0018] Figure 2 This is a schematic diagram showing the extended state of the baffle of the indoor unit of an air conditioner according to some embodiments of this application.

[0019] Figure 3 This is a schematic diagram of the internal structure of an air conditioner indoor unit according to some embodiments of this application.

[0020] Figure 4 This is a schematic diagram of the internal structure of an air conditioner indoor unit in the off state according to some embodiments of this application.

[0021] Figure 5 This is a schematic diagram of the internal structure of an indoor air conditioning unit in the first air outlet state, according to some embodiments of this application.

[0022] Figure 6 This is a schematic diagram of the internal structure of an air conditioner indoor unit in the second air outlet state, according to some embodiments of this application.

[0023] Figure 7 This is a schematic diagram showing the smooth connection between the air conditioner indoor unit reversing plate and the first wall in some embodiments of this application.

[0024] Figure label:

[0025] 1. Outer shell; 2. Air duct; 21. First wall; 22. Second wall; 3. First air guide plate; 4. First air outlet; 5. Baffle; 6. Return air outlet; 7. Heat exchanger; 8. Fan; 9. Inner air guide plate; 10. Second air outlet; 11. Second air guide plate; 12. Reversing plate. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

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

[0029] like Figures 1-3 This application provides an indoor air conditioning unit in several embodiments, including a body. The body includes a housing 1, a first air outlet 4, a second air outlet 10, and a return air outlet 6 disposed on the housing 1, and an air duct 2 disposed within the housing 1. The first air outlet 4 is located on the front side of the housing 1. The second air outlet 10 is located on the bottom of the housing 1. The return air outlet 6 is located on the top of the housing 1. The air inlet end of the air duct 2 communicates with the return air outlet 6. The air outlet end of the air duct 2 communicates with at least one of the first air outlet 4 and the second air outlet 10.

[0030] Specifically, the outer casing 1 of the unit has a cuboid structure. The unit is mounted on an indoor wall, located near the ceiling. The rear side of casing 1 faces the indoor wall, and the front side faces the opposite side, meaning the front of casing 1 faces the indoor space. This causes the airflow from the first air outlet 4 to generally face the top of the indoor space. The bottom of casing 1 faces the indoor floor, causing the airflow from the second air outlet 4 to generally face the bottom of the indoor space. The top of casing 1 faces the indoor ceiling, so that when the indoor unit is operating, indoor air flows from the top of the room to the return air vent 6.

[0031] Furthermore, the indoor unit of the air conditioner has a cooling mode and a heating mode. In cooling mode, such as... Figure 5 As shown, the air outlet of the air duct 2 is connected to the first air outlet 4, making the return air outlet 6 connected to the first air outlet 4. Thus, airflow enters the air duct 2 from the return air outlet 6 and flows along the air duct 2 to the first air outlet 4. The first air outlet 4 blows cold air towards the top area of ​​the indoor space. Because cold air is denser than hot air, the cold air blown from the first air outlet 4 gradually falls under the influence of gravity and is evenly distributed in the lower part of the indoor space, effectively reducing the discomfort caused by cold air blowing directly on the body. In heating mode, as... Figure 4As shown, the air outlet of the air duct 2 is connected to the second air outlet 10, so that the return air outlet 6 is connected to the second air outlet 10. Thus, the airflow enters the air duct 2 from the return air outlet 6 and flows along the air duct 2 to the second air outlet 10. The second air outlet 10 blows hot air towards the lower part of the indoor space, ensuring that the hot air flows downward and reaches the ground, which has a better heating effect and user experience.

[0032] In summary, by setting the first air outlet 4 and the second air outlet 10 at different positions on the outer casing 1, and by selectively connecting the air outlet end of the air duct 2 to the two air outlets, the indoor unit of the air conditioner can achieve upward delivery of cold air and downward delivery of hot air, significantly improving the user's comfort.

[0033] refer to Figure 3 In some embodiments, in order to ensure that the indoor unit of the air conditioner has both cooling and heating modes, the indoor unit of the air conditioner also includes a heat exchanger 7 disposed in the air duct 2. In the cooling mode, the heat exchanger 7 is used to cool the airflow in the air duct 2 to form cold air; in the heating mode, the heat exchanger 7 is used to heat the airflow in the air duct 2 to form hot air.

[0034] refer to Figure 3 In some embodiments, the indoor unit of the air conditioner further includes a duct wall for forming the air duct 2 and a reversing plate 12 disposed within the housing 1. The duct wall includes a first wall 21 disposed near the rear side of the housing 1 and a second wall 22 disposed near the front side of the housing 1. The gap between the bottom end of the first wall 21 and the bottom end of the second wall 22 forms an air outlet. The first end of the reversing plate 12 is rotatably connected to the housing 1 so that the second end of the reversing plate 12 can move to different positions of the air outlet of the air duct 2.

[0035] Specifically, refer to Figure 3 Within the cross-section of the unit, both the first wall 21 and the second wall 22 extend from top to bottom. The area between the first wall 21 and the second wall 22 forms the air duct 2. After the air in the indoor space enters the outer casing 1 through the return air inlet 6, it is restricted by the first wall 21 and the second wall 22, so it can only flow along the air duct 2. This ensures that the airflow is concentrated towards the first air outlet 4 or the second air outlet 10, thereby improving the air delivery capacity of the indoor air conditioning unit.

[0036] Furthermore, by making the reversing plate 12 rotatable, it can rotate to different positions, allowing the airflow in the duct 2 to flow through the air outlet to different air outlets, thus achieving controllable airflow direction. This enables targeted control of airflow from a specific air outlet, improving the controllability of the indoor air conditioning unit. Moreover, this solution has low control costs and is highly feasible.

[0037] In some embodiments, the cross-sectional area of ​​the air outlet end of the air duct 2 can be divided by controlling the rotation angle of the reversing plate 12. For example, the cross-sectional area flowing to the first air outlet 4 is larger and the cross-sectional area flowing to the second air outlet 10 is smaller, thereby realizing the distribution of airflow, so that the air volume of the first air outlet 4 is large and the air volume of the second air outlet 10 is small, making the air outlet state of the air conditioner indoor unit more diversified.

[0038] refer to Figure 5 and 6 In some embodiments, the indoor unit of the air conditioner has a first air outlet state and a second air outlet state. In the first air outlet state, the second end of the reversing plate 12 overlaps the bottom end of the first wall 21, so that the air outlet end is connected to the first air outlet 4 and disconnected from the second air outlet 10. In the second air outlet state, the second end of the reversing plate 12 overlaps the bottom end of the second wall 22, so that the air outlet end is connected to the second air outlet 10 and disconnected from the first air outlet 4.

[0039] Specifically, the reversing plate 12 is an arc-shaped plate. The second end of the reversing plate 12 is closer to the return air vent 6 than the first end, so that the second end of the reversing plate 12 can move a larger range with only a small rotation of the first end. When the reversing plate 12 overlaps the bottom end of the first wall 21, the front surface of the reversing plate 12 (i.e., the surface facing away from the second air outlet 10) forms a smooth curved surface to guide the airflow from the outlet end of the air duct 2 to the first air outlet 4. When the reversing plate 12 overlaps the bottom end of the second wall 22, the rear surface of the reversing plate 12 (i.e., the surface facing the second air outlet 10) is used to close the air passage between the outlet end of the air duct 2 and the first air outlet 4, so that the airflow can only flow out through the second air outlet 10.

[0040] Based on this, the simple structure allows the indoor unit of the air conditioner to have two air outlets, and the air outlet of one of them can be selectively controlled, saving control and manufacturing costs.

[0041] In some embodiments, the top end of the first wall 21 extends inside the housing 1 to a position near the return air inlet 6 on the rear side of the housing 1, and the top end of the second wall 22 extends inside the housing 1 to a position between the return air inlet 6 and the first air outlet 4 on the front side of the housing 1. The bottom ends of the first wall 21 and the second wall 22 are located above the second air outlet 10 and converge relative to the top ends of the first wall 21 and the second wall 22, so that the air duct 2 has a structure that is wider at the top and narrower at the bottom, which facilitates the concentrated flow of air entering from the return air inlet 6 and improves the air outlet performance of the indoor unit of the air conditioner.

[0042] In some embodiments, a stepped structure 13 is provided at the bottom end of the first wall 21. In the first air outlet state, the second end of the reversing plate 12 overlaps the stepped structure 13 to make the reversing plate 12 and the first wall 21 transition smoothly.

[0043] Specifically, such as Figure 7 As shown, the step structure 13 is located at the bottom of the first wall 21, and the reversing plate 12 can overlap the step structure 13, so that the surface of the first wall 21 and the surface of the reversing plate 12 are smoothly transitioned without obvious protrusions. The two work together to form a smooth airflow channel, making the airflow here smoother.

[0044] In some embodiments, the indoor unit of the air conditioner also has a third air outlet state. In the third air outlet state, the second end of the reversing plate 12 moves to a position such that the air duct 2 is connected to both the first air outlet 4 and the second air outlet 10.

[0045] Specifically, in this state, the air outlet of the air duct 2 is connected to both the first air outlet 4 and the second air outlet 10. Part of the airflow entering from the return air outlet 6 can flow out through the first air outlet 4, and the other part can flow out through the second air outlet 10. This allows the indoor unit of the air conditioner to blow air over a wide area, thereby improving the efficiency of indoor temperature control.

[0046] More specifically, in cooling mode, in addition to blowing cold air from the first air outlet 4 toward the top area of ​​the indoor space, the cold air is also blown directly toward the ground from the second air outlet 10. Compared with the solution of blowing cold air only through the first air outlet 4, the blowing range of the cold air is larger, which can lower the indoor temperature more quickly. Furthermore, under the same air volume, the air velocity will be reduced, thus enhancing comfort.

[0047] Similarly, in heating mode, in addition to being blown toward the ground from the second air outlet 10, hot air is also blown toward the top area of ​​the indoor space through the first air outlet 4. Compared with the air outlet 10 alone, the hot air has a wider blowing range, which can raise the indoor temperature faster. Furthermore, the air velocity will be reduced at the same air volume, thus enhancing comfort.

[0048] refer to Figure 3 In some embodiments, the indoor unit of the air conditioner also includes a fan 8 disposed within the air duct 2. A heat exchanger 7 is disposed upstream of the fan 7 along the path of the airflow along the air duct 2, and the fan 8 is used to drive the airflow.

[0049] In some embodiments, the indoor unit of the air conditioner further includes a first air guide plate 3 disposed at the first air outlet 4 and a second air guide plate 11 disposed at the second air outlet 10.

[0050] Specifically, the first air guide plate 3 and the second air guide plate 11 are flat blades, and both can be rotatably configured to adjust the air outlet direction.

[0051] In some embodiments, the indoor unit of the air conditioner also includes an inner air guide plate 9 disposed inside the air duct 2.

[0052] Specifically, the inner air guide plate 9 is located within the air duct 2 near the air outlet. The inner air guide plate 9 is rotatable to sweep airflow. Since the second air outlet 10 is configured to blow air downwards directly to the user, the rotation direction of the inner air guide plate 9 differs from that of the second air guide plate 11 to improve user experience. For example, the second air guide plate 11 rotates in a different direction than the second air guide plate 11. Figure 3 The cross-section shown rotates in a plane parallel to the air outlet to adjust the air outlet direction along the height in the indoor space. The inner air guide plate 9 rotates in a horizontal plane to adjust the air outlet direction along the length X of the outer shell 1 in the indoor space.

[0053] The inventors of this application also discovered that by changing the single air outlet in the traditional solution to two separate air outlets, and with one of the air outlets located on the front side of the outer casing 1, the position of the air outlet is closer to the position of the return air outlet, making it easy for the airflow blown out by the air outlet to flow directly back to the return air outlet, thus affecting the performance of the indoor unit of the air conditioner.

[0054] Therefore, refer to Figure 2 and 3 In some embodiments, the indoor unit of the air conditioner also includes a baffle 5. The baffle 5 is located on the front side of the housing 1 and is slidably disposed on the housing 1. When air is discharged from the first air outlet 4, the baffle 5 slides upward relative to the housing 1 so that the upper end of the baffle 5 protrudes relative to the top of the housing 1.

[0055] Specifically, when air is discharged from the first air outlet 4, the baffle 5 extends out, and the part of the baffle 5 that extends out relative to the top of the outer casing 1 can block the airflow sent from the first air outlet 4, preventing it from flowing directly to the return air outlet 6. Therefore, it plays a role in preventing short circuit of return air and improving the air output performance of the indoor unit of the air conditioner.

[0056] In some embodiments, in the off state, the first air outlet 4 is hidden behind the baffle 5. At this time, the baffle 5 closes the first air outlet 4 from the outside of the casing. Simultaneously, the reversing plate 12 overlaps with the first wall 21, and the reversing plate 12 closes the second air outlet 10 from the inside of the casing. When switching from the off state to the first air outlet state, the reversing plate 12 remains stationary, and the baffle 5 slides upward to expose the first air outlet 4. At this time, the first air outlet 4 can discharge air, while the second air outlet 10 remains closed.

[0057] like Figure 2 and 3 As shown, in some embodiments, the two ends of the baffle 5 along the length direction X of the housing 1 are configured to be bent toward the housing 1.

[0058] Specifically, the two ends of the baffle 5 along the length direction of the outer shell 1 are roughly at the same position as the two ends of the outer shell 1 along the length direction. The connection between the length and width of the outer shell 1 is smoothly transitioned, and the end of the baffle 5 is bent along the contour of the smooth transition, so that the baffle 5 can fit the outer shell 1 better, thereby better preventing the airflow sent from the first air outlet 4 from flowing to the return air outlet 6.

[0059] In addition, after the baffle 5 is bent, the bent part can concentrate the airflow, which helps the air in the indoor space to flow to the return air vent 6, thereby improving the performance of the indoor air conditioning unit.

[0060] like Figure 4 and 6 As shown, in some embodiments, when the first air outlet 4 is closed, the upper end of the baffle 5 is flush with the top of the housing 1.

[0061] When the first air outlet 4 is not supplying air, for example, in the off state, the baffle 5 is retracted to ensure that the upper end of the baffle 5 does not protrude relative to the top of the outer casing 1, which makes the appearance of the air conditioner indoor unit neat and facilitates the transportation and maintenance of the air conditioner indoor unit.

[0062] When air is supplied through the second air outlet 4, the baffle 5 is also in a retracted state. Because the second air outlet 10 and the return air outlet 6 are far apart, the possibility of a short circuit in the return air is low. If the baffle 5 is still extended relative to the outer casing 1, it will affect the ability of the return air outlet 6 to recover airflow from the surrounding space to some extent. Some embodiments of this application also provide a control method for an indoor air conditioning unit, including the following steps:

[0063] Obtain indoor temperature; and

[0064] When the indoor temperature is higher than the first set value, the return air vent 6 is connected to the first air outlet 4, and the indoor unit of the air conditioner is put into cooling mode; when the indoor temperature is lower than the second set value, the second set value is lower than the first set value, the return air vent 6 is connected to the second air outlet 4, and the indoor unit of the air conditioner is put into heating mode.

[0065] The first set value can be, for example, 28°C. When the indoor temperature exceeds 28°C, it indicates that the indoor temperature is high. Then, the reversing plate 12 of the indoor unit of the air conditioner rotates to overlap with the first wall 21, so that the return air vent 6 is connected to the first air outlet 4, and the heat exchanger 7 cools the airflow in the air duct 2 to form cold air. The cold air is blown out through the first air outlet 4.

[0066] The second setting value can be, for example, 20°C. When the indoor temperature is below 20°C, it indicates that the indoor temperature is low. Then, the reversing plate 12 of the indoor unit of the air conditioner rotates to overlap with the second wall 22, so that the return air vent 6 is connected to the second air outlet 10, and the heat exchanger 7 heats the airflow in the air duct 2 to form hot air. The heat is blown out through the second air outlet 10.

[0067] In summary, the control method based on this embodiment can not only deliver cool air upwards and avoid delivering hot air downwards to the ground, but also intelligently regulate the indoor temperature, ensuring user comfort.

[0068] In some embodiments, a temperature sensor is installed on the indoor unit of the air conditioner. The temperature sensor can detect the indoor temperature, thereby enabling intelligent control of the commutator 12 and improving the user experience.

[0069] In some embodiments, when the indoor temperature is higher than a first set value, connecting the return air vent 6 to the first air outlet 4 includes: when the indoor temperature is higher than the first set value, controlling the baffle 5 to slide upward a first distance; when the indoor temperature is higher than a third set value, the third set value is higher than the first set value, controlling the baffle 5 to slide upward a second distance, the second distance being greater than the first distance.

[0070] Specifically, when air is discharged from the first air outlet 4, the baffle 5 is slid upward a first distance, so that a part of the baffle 5 extends relative to the top of the outer casing 1, thereby preventing short circuit of return air and reducing the airflow blown out of the first air outlet 4 from flowing directly to the return air outlet 6.

[0071] Furthermore, the third set value is, for example, 35°C. At this time, the indoor temperature is significantly higher than the human body's comfortable temperature range, and it is necessary to reduce the indoor temperature as soon as possible. Therefore, it is necessary to increase the air volume of the first air outlet 4. If the sliding distance of the baffle 5 remains unchanged, after the air volume of the first air outlet 4 is increased, some airflow may flow back to the return air vent 6, resulting in a short circuit. Based on the solution of this embodiment, the sliding distance of the baffle 5 is made longer, which can make the distance of the baffle 5 extending relative to the outer shell 1 longer. This can enhance the ability of the baffle 5 to prevent the airflow of the first air outlet 4 from flowing to the return air vent 6.

[0072] Considering that users may leave the room after turning on the indoor unit of the air conditioner in some situations, the airflow can be made more intelligent.

[0073] For example, in some embodiments, the control method further includes: detecting whether there is a user in the room; when there is no user in the room and the indoor temperature is higher than a first set value, setting the indoor unit of the air conditioner to a cooling mode; and controlling the reversing plate 12 to rotate between the first wall 21 and the second wall 22 so that both the first air outlet 4 and the second air outlet 10 will emit air.

[0074] Specifically, when there are no users indoors, there is no need to consider the series of problems caused by cold air blowing directly on people. At this time, the reversing plate 12 is rotated to be located between the first wall 21 and the second wall 22, so that the return air vent 6 is connected to both the first air outlet 4 and the second air outlet 10. The two air outlets emit air at the same time, increasing the cooling air outlet range and thus controlling the indoor temperature more efficiently.

[0075] When a user is detected indoors, the reversing plate 12 is controlled to rotate to overlap with the first wall 21, separating the second air outlet 10 from the return air outlet 6, so that the cold air only blows out from the first air outlet 4, avoiding direct blowing on the human body and ensuring the user's comfort.

[0076] To give users more control and a more comprehensive user experience, the remote control of the indoor unit of the air conditioner is also connected to the reversing plate 12. When users can tolerate direct cold air blowing or need to blow cold air over a large area, they can use the remote control to rotate the reversing plate 12 between the first wall 21 and the second wall 22, so that cold air comes out from both air outlets.

[0077] Similarly, when a user needs to blow hot air over a large area, the reversing plate 12 can be rotated between the first wall 21 and the second wall 22 using a remote control, so that hot air is emitted from both air outlets.

[0078] In some embodiments, an infrared sensor is installed on the indoor unit of the air conditioner. The infrared sensor determines the presence of a person by detecting the infrared radiation (i.e., heat) emitted by the human body.

[0079] The following is in conjunction with the appendix Figures 1-7 This application details the structure and working principle of an air conditioner indoor unit according to a specific embodiment.

[0080] like Figure 1 As shown, the indoor unit of the air conditioner has a casing 1, which is generally rectangular in shape. A return air vent 6 is located on the top of the casing 1. The return air vent 6 has a grille structure and can be opened or closed. A baffle 5 and a first air outlet 4 are located on the front side or the central area of ​​the front of the casing 1. The first air outlet 4 is hidden behind the baffle 5. The baffle 5 slides upward to open, exposing the first air outlet 4. A first air guide plate 3 on the first air outlet 4 can be opened and closed. A second air outlet 10 is located at the bottom of the casing 1. A second air guide plate 11 on the second air outlet 10 can be opened and closed. Inside the casing 1, there is an air duct 2 and a reversing plate 12. The reversing plate 12 rotates and overlaps inside the air duct 2, forming different air duct paths and changing the direction of airflow.

[0081] like Figure 4In shutdown mode, the return air vent 6, the first air outlet 4, and the second air outlet 10 are closed, the baffle 5 is in a fixed position, and the reversing plate 12 remains connected to the second wall 22. The exterior is not exposed, and the overall structure is neat.

[0082] like Figure 3 When the user activates the cooling mode, the return air vent 6 opens, and the baffle 5 slides upward to a designated position to prevent short-circuiting of the return air. Then, the first air outlet 4 is exposed, and the first air guide plate 3 rotates open. The second air outlet 10 remains closed, and the reversing plate 12 rotates downward to overlap the first wall 21, with a smooth curve transition between the reversing plate 12 and the first wall 21. The inner air guide plate 9 has a stepped structure 13 at its location, and the top of the reversing plate 12 has a structure that fits with the stepped structure 13. Together, they form a smooth airflow duct, and finally, the fan starts simultaneously. At this point, the airflow enters the outer casing 1 from the return air vent 6, is cooled by the heat exchanger 7, and generates a low-temperature airflow. This airflow passes through the air duct 2 and exits from the first air outlet 4. Simultaneously, the rotation angle of the first air guide plate 3 is controlled to ensure that the cold air flows upward, avoiding the human body.

[0083] When no one is in the room, the user can tolerate direct cold air blowing, or the user needs to adjust a large range of angles, the reversing plate 12 can be adjusted to divide the air duct 2 into two parts, and the cooling gas is discharged from the second air outlet 10 and the first air outlet 4 respectively, increasing the cooling air outlet range. Under the same air volume, the wind speed is reduced and the comfort is enhanced.

[0084] like Figure 6 When the user turns on the heating mode, the return air vent 6 opens, the baffle 5 and the reversing plate 12 remain stationary, the second air outlet 10 opens, and the fan turns on simultaneously. The airflow enters the outer casing from the return air vent 6, and after heat exchange by the heat exchanger 7, a high-temperature airflow is generated. It flows out from the second air outlet 10 through the air duct 2. At the same time, the rotation angle of the second air guide plate 11 is controlled to ensure that the hot air flows downward and reaches the ground.

[0085] When the user needs to adjust a large range of angles, the reversing plate 12 can be adjusted to divide the air duct 2 into two parts, and the heating gas is discharged from the second air outlet 10 and the first air outlet 4 respectively, increasing the heating air outlet range. Under the same air volume, the wind speed is reduced and the comfort is enhanced.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The body includes an outer shell (1), a first air outlet (4), a second air outlet (10), and a return air outlet (6) disposed on the outer shell (1), and an air duct (2) disposed inside the outer shell (1). The first air outlet (4) is disposed on the front side of the outer shell (1), the second air outlet (10) is disposed on the bottom of the outer shell (1), and the return air outlet (6) is disposed on the top of the outer shell (1). The air inlet end of the air duct (2) is connected to the return air outlet (6), and the air outlet end of the air duct (2) is connected to at least one of the first air outlet (4) and the second air outlet (10).

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The indoor unit of the air conditioner also includes a duct wall for forming the air duct (2) and a reversing plate (12) disposed in the housing (1). The air duct wall includes a first wall (21) disposed near the rear side of the housing (1) and a second wall (22) disposed near the front side of the housing (1). The gap between the bottom end of the first wall (21) and the bottom end of the second wall (22) forms the air outlet. The first end of the reversing plate (12) is rotatably connected to the housing (1) so that the second end of the reversing plate (12) can move to different positions of the air outlet of the air duct (2).

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The indoor unit of the air conditioner has a first air outlet state and a second air outlet state. In the first air outlet state, the second end of the reversing plate (12) overlaps the bottom end of the first wall (21) so that the air outlet end is connected to the first air outlet (4) and disconnected from the second air outlet (10). In the second air outlet state, the second end of the reversing plate (12) overlaps the bottom end of the second wall (22) so that the air outlet end is connected to the second air outlet (10) and disconnected from the first air outlet (4).

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The bottom end of the first wall (21) is provided with a stepped structure (13). In the first air outlet state, the second end of the reversing plate (12) overlaps the stepped structure (13) so that the reversing plate (12) and the first wall (21) can transition smoothly.

5. The indoor unit of the air conditioner according to claim 2, characterized in that, The indoor unit of the air conditioner also has a third air outlet state, in which the second end of the reversing plate (12) moves to the middle so that the air duct (2) is connected to both the first air outlet (4) and the second air outlet (10).

6. The air conditioning indoor unit according to any one of claims 1 to 5, characterized in that, The indoor unit of the air conditioner also includes a baffle (5), which is located on the front side of the outer casing (1) and is slidably disposed on the outer casing (1). When air is discharged from the first air outlet (4), the baffle (5) slides upward relative to the outer casing (1) so that the upper end of the baffle (5) extends out relative to the top of the outer casing (1).

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The two ends of the baffle (5) along the length direction (X) of the outer shell (1) are configured to be bent toward the outer shell (1).

8. The indoor unit of the air conditioner according to claim 6, characterized in that, When the first air outlet (4) is closed, the upper end of the baffle (5) is flush with the top of the outer casing (1).

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