External air duct, air conditioner indoor unit and air conditioning equipment

Abstract

The utility model provides an external air duct, an air conditioner indoor unit and air conditioning equipment. The external air duct for the indoor unit of the air conditioner comprises an air inlet duct and an air outlet duct. The two axial ends of the air inlet barrel are open, and the axial end of the air inlet barrel is used for being connected with an air outlet of the air conditioner indoor unit so as to introduce air outlet airflow of the air outlet. An air outlet is formed in the peripheral wall of the air outlet barrel, at least one axial end of the air outlet barrel is open, and an open end is inserted into the other axial end of the air inlet barrel. And the air outlet cylinder can translate along the axial direction of the air inlet cylinder so as to translate to a retraction state in which the air outlet is shielded by the cylinder wall of the air inlet cylinder, or translate to a stretching state in which the air outlet is far away from the air inlet cylinder so as to allow the air outlet to discharge air flow. The air conditioner indoor unit solves the problems that an existing air conditioner indoor unit is monotonous in air outlet structure form and lacks innovation.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an external air duct, an air conditioner indoor unit and air conditioning equipment. Background Art

[0002] Air conditioners are used to regulate indoor air, including adjusting the temperature, humidity, and air quality of the air, humidifying and dehumidifying the indoor air, introducing fresh air, etc. Air conditioners consist of a vapor compression refrigeration cycle system consisting of an evaporator, condenser, compressor, throttling device, and other necessary components. The air conditioner outputs cold / hot air through a fan to achieve cooling and heating of the indoor environment.

[0003] Most of the existing air conditioner indoor units are equipped with air outlet structures such as air guide plates and swing blades at the air outlet to adjust the air outlet direction and air outlet area of ​​the air outlet. The structure is simple and lacks innovation.

[0004] The embedded air conditioner indoor unit is a new type of air conditioner indoor unit, which is used for embedded installation, such as embedded in a cabinet or other cabinets. After the cabinet door is opened, the air inlet and outlet on the front side of the air conditioner indoor unit are exposed for air intake and air discharge. However, technicians have found that the air conditioning efficiency of the embedded air conditioner indoor unit is always low, and no good solution can be found. Utility Model Content

[0005] The purpose of the utility model is to provide an external air duct, an air conditioner indoor unit and an air conditioning device which overcome the above problems or at least partially solve the above problems.

[0006] The utility model aims to solve the problem that the air outlet structure of the existing air conditioner indoor unit is monotonous and lacks innovation.

[0007] Another purpose of the utility model is to solve the problem that it is difficult to improve the energy efficiency of the existing embedded air-conditioning indoor unit.

[0008] On the one hand, the utility model provides an external air duct for an indoor unit of an air conditioner, comprising:

[0009] An air inlet cylinder, which is open at both axial ends and one axial end of which is used to connect with the air outlet of the air conditioner indoor unit to introduce the air flow from the air outlet; and

[0010] The air outlet cylinder has an air outlet on its peripheral wall and is open at least at one axial end, and the open end is plugged into the other axial end of the air inlet cylinder; and

[0011] The air outlet cylinder can translate along the axial direction of the air inlet cylinder to a retracted state in which the air outlet is shielded by the cylinder wall of the air inlet cylinder, or to an extended state in which the air outlet is away from the air inlet cylinder to allow it to discharge the outlet airflow.

[0012] Optionally, one axial end of the air outlet cylinder is open and the other axial end is closed, so that only the air outlet of the air outlet cylinder is used for air outlet.

[0013] Optionally, the air outlet cylinder is inserted into the air inlet cylinder.

[0014] Optionally, the air outlet cylinder is configured to be rotatable around its own central axis within the air inlet cylinder to adjust the direction of the air outlet.

[0015] On the other hand, the utility model also provides an air conditioner indoor unit, which includes:

[0016] a housing having an air outlet for discharging air; and

[0017] As described in any of the above items, the external air guide tube is arranged outside the casing, and one axial end of the air inlet tube is connected to the air outlet to introduce the outlet air flow of the air outlet and discharge the outlet air flow through the air outlet.

[0018] Optionally, the air-conditioning indoor unit is of embedded type, and is used to be embedded in a preset chamber.

[0019] Optionally, the chamber is a chamber of a cabinet;

[0020] The cabinet comprises a cabinet body and a cabinet door, the cabinet body has an opening, and the cabinet door is movably arranged on the cabinet body to open and close the opening; and

[0021] The air outlet is connected to the cabinet door so that when the cabinet door is in a closed state, the air outlet is in the retracted state; when the cabinet door is in an open state, the air outlet is in the extended state to expose the air outlet so as to supply air to the outside of the cabinet.

[0022] In another aspect, the utility model further provides an air conditioning device, comprising:

[0023] A cabinet comprising a cabinet body and a cabinet door, wherein the cabinet body has an opening, and the cabinet door is movably arranged on the cabinet body for opening and closing the opening; and

[0024] The air conditioner indoor unit as described above is arranged in the cabinet, and its air outlet is on the same side as the opening; and

[0025] The air outlet is connected to the cabinet door so that when the cabinet door is in a closed state, the air outlet is in the retracted state; when the cabinet door is in an open state, the air outlet is in the extended state to expose the air outlet so as to supply air to the outside of the cabinet.

[0026] Optionally, the air inlet cylinder is sealed with the housing to prevent the outlet air from flowing out through a gap therebetween; and

[0027] The air outlet tube is sealed against the inner side surface of the cabinet door to prevent the air outlet from flowing out through the gap between the two.

[0028] Optionally, the upper side of the cabinet door is rotatably mounted on the cabinet body; and

[0029] The air inlet duct is flexibly connected to the casing, and the air outlet duct is flexibly connected to the cabinet door, so as to facilitate the opening and closing process of the cabinet door.

[0030] The utility model is provided with an external air guide tube on the outside of the indoor unit of the air conditioner, and the external air guide tube can be used to guide the outlet air flow of the air outlet, and guide the outlet air flow to a desired position to adjust the air outlet direction. In addition, the external air guide tube includes an air inlet tube and an air outlet tube that are plugged and connected to each other, and the air outlet tube can be translated along the axial direction of the air inlet tube, so that the air outlet is shielded by the tube wall of the air inlet tube when translated to a retracted state, and the air outlet is away from the air inlet tube when translated to an extended state to allow it to discharge the outlet air flow. Of course, it is understandable that the position of the air outlet tube can also be adjusted between the retracted state and the extended state to change the air outlet area of ​​the air outlet, thereby adjusting the air outlet volume. The utility model uses an external air guide tube to replace traditional air outlet structures such as traditional air guide plates and swing blades. The conception is very clever and innovative, and the overall structure is simple and the cost is lower.

[0031] Furthermore, the external air duct of the utility model is particularly suitable for embedded air-conditioning indoor units. The inventors have found through research that embedded air-conditioning indoor units adopt a front airflow form, and the air inlet and the air outlet are arranged adjacent to each other and are very close. This causes a part of the outlet air flow to mix with the inlet air flow and flow back into the casing from the air inlet. Taking the cooling mode as an example, the temperature of these outlet air flows is relatively low in itself, and their mixing with the inlet air flow will cause the overall temperature of the inlet air flow to become lower, lowering the heat exchange between the inlet air flow and the heat exchanger, causing the heat exchanger to be unable to fully exert its heat exchange capacity, reducing its heat exchange efficiency, and further causing the air conditioner to have a reduced energy efficiency. To this end, the air-conditioning indoor unit of the utility model uses an external air duct to lead the outlet air flow away from the air inlet, to prevent the outlet air flow from mixing with the inlet air flow, to ensure the heat exchange efficiency of the heat exchanger, and thus to improve the energy efficiency of the air conditioner.

[0032] Furthermore, when the external air duct of the utility model is applied to the indoor unit of the embedded air conditioner, the air outlet of the external air duct is connected to the cabinet door, so that when the cabinet door is closed, the air outlet is in a retracted state; when the cabinet door is in an open state, the air outlet is in an extended state to expose the air outlet so as to supply air to the outside of the cabinet. The air outlet area of ​​the air outlet is also related to the opening angle of the cabinet door. It can be seen that the utility model realizes the state adjustment of the external air duct while opening and closing the cabinet door, making the user operation simpler and more efficient.

[0033] The air conditioning device of the utility model uses an external air guide tube to guide the outlet air flow to the outside of the cabinet, thereby preventing the outlet air flow from affecting the inlet air flow, and the design is simple and ingenious.

[0034] Based on the detailed description of some specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0036] Figure 1 It is an exploded schematic diagram of an external air duct according to an embodiment of the utility model;

[0037] Figure 2 is a structural schematic diagram of an air-conditioning indoor unit according to an embodiment of the utility model;

[0038] Figure 3 yes Figure 2 NN profile diagram;

[0039] Figure 4 yes Figure 3 The schematic diagram of the indoor unit of the air conditioner shown is when the air outlet tube of the external air duct is in the extended state;

[0040] Figure 5 yes Figure 2 The schematic diagram of the state where the indoor unit of the air conditioner is embedded in the cabinet is shown;

[0041] Figure 6 yes Figure 2 The structure shown is a schematic diagram of the state after the cabinet door is opened. DETAILED DESCRIPTION

[0042] In the description of this embodiment, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.

[0043] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, it is defined that the features "first", "second", etc. may explicitly or implicitly include at least one of the features, that is, include one or more of the features.

[0044] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0045] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "coupled" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0046] Furthermore, in the description of this embodiment, a first feature being “above” or “below” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0047] That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of the embodiments of the present invention have the same meanings as those commonly understood by ordinary technicians in the technical field to which the present application belongs.

[0049] The embodiment of the utility model provides an external air duct 29 for an air conditioner indoor unit 20 .

[0050] Figure 1 It is an exploded schematic diagram of an external air guide tube 29 according to an embodiment of the utility model; Figure 2 is a schematic structural diagram of an air-conditioning indoor unit 20 according to an embodiment of the utility model; Figure 3 yes Figure 2 NN profile diagram; Figure 4 yes Figure 3 The air conditioner indoor unit 20 is shown as a schematic diagram when the air outlet tube 292 of the external air guide tube 29 is in an extended state; Figure 1 The dotted lines in the figure represent the invisible lines at the bottom and rear of the external air guide tube 29. Figure 4 Arrows indicate wind direction.

[0051] like Figures 1 to 4 As shown, the external air guide cylinder 29 of the embodiment of the utility model may generally include an air inlet cylinder 291 and an air outlet cylinder 292 .

[0052] The air inlet 291 and the air outlet 292 are both in the shape of a cylinder, and can be in the shape of a cylinder, a square cylinder (such as Figure 1 ), elliptical cylindrical or other cylindrical shapes, which are not limited in the embodiments of the present invention.

[0053] The air inlet 291 is open at both axial ends, and one axial end is used to connect with the air outlet 212 of the air conditioner indoor unit to introduce the outlet air flow of the air outlet 212 (the axial direction of the air inlet 291 is parallel to the x-axis direction). Figure 3 The two axial ends of the air inlet cylinder 291 are end A and end B respectively, so that end A is connected to the air outlet 212.

[0054] The air outlet 292 is provided with an air outlet 2920 on its peripheral wall, and at least one axial end is open, and one open end C is plugged into the other axial end B of the air inlet 291 (the axial direction of the air outlet 292 is parallel to the x-axis direction). Figure 1 As shown, the two axial ends of the air outlet tube 292 are end C and end E respectively. The end C can be opened, such as Figure 3 ; Alternatively, the E end may be open; or, both the C and E ends may be open.

[0055] The air outlet cylinder 292 can be translated along the axial direction of the air inlet cylinder 291 (can be translated along the positive and negative directions of the x-axis) to a retracted state (such as Figure 3), or translate to an extended state where the air outlet 2920 is away from the air inlet 291 to allow it to discharge the air flow (such as Figure 4 ). In the retracted state, the air outlet 2920 is blocked and cannot discharge air. In the extended state, the air outlet 2920 can discharge air.

[0056] There are two solutions for plugging the air outlet 292 with the air inlet 291. First, the air outlet 292 is inserted into the air inlet 291. Figure 2 Second, the air inlet 291 is inserted into the air outlet 292. It is preferred that the air outlet 292 is inserted into the air inlet 291, so that in the retracted state, the air outlet 292 is inside the air inlet 291, so that the air outlet 2920 is hidden and invisible, avoiding dust accumulation at the air outlet 2920, and making the appearance of the external air guide 29 more complete and beautiful.

[0057] The number of the air outlet 2920 can be one or more. When multiple air outlets 2920 are provided, air can be supplied to multiple directions at the same time.

[0058] In the embodiment of the utility model, an external air guide tube 29 is arranged outside the indoor unit of the air conditioner, and the external air guide tube 29 can be used to guide the air flow of the air outlet 212, and guide the air flow to a desired position to adjust the air outlet direction. The longer the external air guide tube 29 is, the farther the air flow can be guided, which enables the user to install the indoor unit of the air conditioner at the most suitable position according to the specific layout of the room, and then use the external air guide tube 29 to guide the air flow to the most suitable place for air discharge, which makes the installation position of the indoor unit of the air conditioner no longer limited.

[0059] Furthermore, the external air duct 29 includes an air inlet duct 291 and an air outlet duct 292 which are plugged and connected to each other, and the air outlet duct 292 can translate along the axial direction of the air inlet duct 291, so that when translated to a retracted state, the air outlet 2920 is shielded by the wall of the air inlet duct 291, and when translated to an extended state, the air outlet 2920 is away from the air inlet duct 291 to allow it to discharge the air flow. When the air conditioner is turned on, the air outlet duct 292 can be adjusted to an extended state, and after the air conditioner is turned off, the air outlet duct 292 is adjusted to a retracted state to prevent dust and impurities from entering the external air duct 29 through the air outlet 2920.

[0060] Of course, it is understandable that the position of the air outlet 292 can be adjusted between the retracted state and the extended state to change the air outlet area of ​​the air outlet 2920, thereby adjusting the air volume. The embodiment of the utility model uses an external air guide 29 to replace traditional air outlet structures such as traditional air guide plates and swing blades. The design is very clever and innovative, and the overall structure is simple and the cost is lower.

[0061] The air inlet 291 of the external air guide 29 may be provided with a plurality of connection structures so as to be connected to the housing 21 of the air conditioner indoor unit 20. For example, the connection structure may be a hole or a threaded hole so that the external air guide 29 is connected to the housing 21 in a threaded manner. Alternatively, the connection structure is a buckle or a snap-fit ​​hole so that the air inlet 291 is connected to the housing 21 in a snap-fit ​​manner. Alternatively, the connection mechanism is only a flange of the air inlet 291 so that the air inlet 291 is connected to the housing 21 in an adhesive manner.

[0062] In some embodiments of the utility model, one axial end C of the air outlet cylinder 292 is open, and the other end E is closed, so that only the air outlet 2920 of the air outlet cylinder 292 is used for air outlet. In other embodiments, one axial end E of the air outlet cylinder 292 is also open for air outlet. In this way, the air outlet cylinder 292 forms a multi-dimensional air outlet structure in which the E end and the air outlet 2920 jointly outlet air, which is conducive to the diffusion of the air flow. Furthermore, the E end of the air outlet cylinder 292 can be provided with a damper or an air guide structure to open and close the E end or adjust its air outlet direction / air volume.

[0063] In some embodiments of the present invention, the air outlet cylinder 292 is configured to rotate around its own central axis within the air inlet cylinder 291 to further adjust the direction of the air outlet 2920 .

[0064] In some embodiments of the utility model, the external air duct 29 can be made of a soft elastic material to produce elastic deformation under the action of an external force, thereby achieving expansion, contraction and / or bending, so as to flexibly adjust the direction of the air outlet 2920. The soft elastic material undergoes elastic deformation after being subjected to force, and returns to its original position by its own elastic force after the external force disappears. For example, the soft elastic material can be rubber or plastic. It can be understood that the extension, contraction and torsion of the external air duct 29 can be achieved by only making a partial section of the external air duct 29 made of a soft elastic material. The section can be any section of the external air duct 29, which can be a continuous section or a plurality of sections arranged intermittently. Of course, in order to facilitate processing and manufacturing, it is preferred that the external air duct 29 is made of a soft elastic material as a whole.

[0065] The embodiment of the utility model further provides an air conditioner indoor unit 20 having the above-mentioned external air duct 29.

[0066] The air conditioner indoor unit 20 is the indoor part of the split air conditioner or the indoor terminal model of the central air conditioner, and is used to adjust the indoor air, specifically, including adjusting the temperature, humidity, air quality of the air, humidifying, dehumidifying, introducing fresh air, etc. The air conditioner can be composed of an evaporator, a condenser, a compressor, a throttling device and other necessary components to form a vapor compression refrigeration cycle system, so as to output cold air / hot air through a fan to achieve cooling and heating of the indoor environment.

[0067] like Figures 2 to 4 As shown, the indoor unit 20 of the air conditioner in the embodiment of the utility model can generally include a casing 21 and an external air guide tube 29 as described in any of the above embodiments.

[0068] The housing 21 has an air outlet 212 for discharging air. The external air guide 29 is disposed outside the housing 21 , and an axial end A of the air inlet 291 is connected to the air outlet 212 to introduce the air flow of the air outlet 212 and discharge the air through the air outlet 2920 .

[0069] Figure 2 and Figure 3 Schematic diagram of an optional form of the air conditioner indoor unit 20. Figure 3 As shown, the air-conditioning indoor unit 20 may generally include a casing 21 , a fan 23 , and a heat exchanger 22 .

[0070] The housing 21 has an air inlet 211 and an air outlet 212 that are open toward the x-axis, that is, the air inlet 211 and the air outlet 212 are on the same side as the cabinet door 12. The housing 21 is used to accommodate the main components of the air conditioner indoor unit 20, including a fan 23, a heat exchanger 22, an electronic control module, etc. The housing 21 is formed with an air duct 215. The fan 23 is arranged in the housing 21, and is used to cause the air in the housing 21 to enter the housing 21 through the air inlet 211 to form an inlet airflow. The heat exchanger 22 is arranged in the housing 21, and is used to exchange heat with the inlet airflow to form a heat exchange airflow. The heat exchange airflow flows to the air outlet 212 through the air duct 215. When the air conditioner is in cooling mode, the heat exchange airflow is a cold airflow. When the air conditioner is in heating mode, the heat exchange airflow is a hot airflow. Of course, the air conditioner can have only cooling function, or both cooling and heating functions.

[0071] In the embodiment of the utility model, an external air duct 29 is provided outside the air conditioner indoor unit 20, and the external air duct 29 can be used to guide the air flow of the air outlet 212 of the air conditioner indoor unit 20, and guide the air flow to a desired position to adjust the air outlet direction. The longer the external air duct 29 is, the farther the air flow can be guided, which enables the user to install the air conditioner indoor unit 20 at the most suitable position according to the specific layout of the room, and then use the external air duct 29 to guide the air flow to the most suitable place for air discharge, which makes the installation position of the air conditioner indoor unit 20 no longer limited.

[0072] Figure 5 yes Figure 3 The schematic diagram of the state where the air conditioner indoor unit 20 is embedded in the cabinet 10; Figure 6 yes Figure 5 The structure shown is a schematic diagram of the state after the cabinet door 12 is opened. Figure 6 Arrows indicate wind direction.

[0073] In some embodiments, the air-conditioning indoor unit 20 is wall-mounted or floor-standing. These two types of air-conditioning indoor units are very common and will not be described in detail here.

[0074] In other embodiments, the air conditioner indoor unit 20 is embedded, and is embedded in a preset chamber. The chamber may be a chamber of a cabinet, a wardrobe or other cabinets. Alternatively, the chamber is a chamber formed by digging a groove in a building wall. The embodiment of the utility model does not limit the chamber. The embedded installation makes the air conditioner indoor unit 20 more concealed and does not affect the overall decoration style of the room.

[0075] The inventor has found through research that the reason why the existing embedded air-conditioning indoor unit has low air conditioning efficiency is related to its air intake method. The embedded air-conditioning indoor unit adopts the front airflow form, and the air inlet 211 and the air outlet 212 are arranged adjacent to each other and very close to each other. This causes a part of the outlet air flow to mix with the inlet air flow and flow back into the casing 21 from the air inlet. Taking the cooling mode as an example, the temperature of these outlet air flows is relatively low in itself, and their mixing with the inlet air flow will cause the overall temperature of the inlet air flow to become lower, lowering the heat exchange rate between the inlet air flow and the heat exchanger, causing the heat exchanger to be unable to fully exert its heat exchange capacity, reducing its heat exchange efficiency, and further causing the air conditioning efficiency to decrease. To this end, the air-conditioning indoor unit 20 of the utility model embodiment uses an external air guide 29 to lead the outlet air flow away from the air inlet 211, to prevent the outlet air flow from mixing with the inlet air flow, to ensure the heat exchange efficiency of the heat exchanger, and thus to improve the energy efficiency of the air conditioner.

[0076] Furthermore, in some embodiments, Figure 5 and Figure 6 As shown, the chamber is the chamber 101 of the cabinet 10. The cabinet 10 includes a cabinet body 11 and a cabinet door 12. The cabinet body 11 defines the chamber 101 and has an opening 110. The cabinet door 12 is movably disposed on the cabinet body 11 to open and close the opening 110. The air outlet 292 is connected to the cabinet door 12 so that when the cabinet door 12 is in a closed state, the air outlet 292 is in a retracted state. Figure 5 When the door 12 is in the open state, the air outlet 292 is in the extended state, such as Figure 6 , so as to expose the air outlet 2920 so as to supply air to the outside of the cabinet 10. The air outlet area of ​​the air outlet is also related to the opening angle of the cabinet door 12.

[0077] It can be seen that the embodiment of the utility model realizes the state switching of the air outlet 292 while opening and closing the cabinet door 12, making the user operation simpler and more efficient. Moreover, when the air conditioner indoor unit 20 is working, the air is discharged by the external air guide 29, so the opening angle of the cabinet door 12 is sufficient to reveal the air outlet, and it does not need to be opened to a too large angle, which saves more space.

[0078] The direction of the air outlet 2920 can be reasonably set according to the position of the air conditioner indoor unit 20. For example, when the air conditioner indoor unit 20 is installed at a higher position, the air outlet 2920 can be opened downward to prevent cold air / hot air from blowing directly on the human body and causing discomfort. Of course, multiple air outlets 2920 can also be provided to deliver air in different directions.

[0079] The A end of the air inlet 291 can be sealed with the housing 21 to prevent the outlet air from flowing out through the gap between the two. The E end of the air outlet 292 can also be sealed with the inner side surface of the cabinet door 12 to prevent the outlet air from flowing out through the gap between the two. In this way, the outlet air flows out only through the air outlet 2920 to avoid leakage, especially to prevent the outlet air from mixing with the inlet air after leakage.

[0080] The cabinet door 12 may be provided with a plurality of connection structures so as to be connected to the E end of the air outlet 292. The connection structure may be a hole or a threaded hole so as to be connected to the air outlet 292 by threaded connection. Alternatively, the connection structure may be a buckle or a snap-fit ​​hole so as to be connected to the air outlet 292 by snap-fit. Alternatively, the air outlet 292 and the cabinet door 12 may be connected by gluing.

[0081] In other embodiments, the E end of the air outlet tube 292 can be slidably installed on the cabinet door 12 so as to adjust the position of the E end on the cabinet door 12 by sliding, thereby adjusting the direction of the air outlet 2920.

[0082] In some embodiments, Figure 4 As shown, the air conditioner indoor unit 20 further includes a partition 26. The partition 26 is disposed in the housing 21 and is used to separate the incoming air flow into multiple air flows, so that the multiple air flows flow to different parts of the heat exchanger 22 respectively, so that each part of the heat exchanger 22 can exchange heat evenly. Figure 5 As shown, there is one partition 26, which divides the airflow into two streams, one above the other, flowing to the rear section and the front section of the heat exchanger, respectively. In other embodiments, the partitions 26 may be multiple and spaced apart to divide the airflow into three, four or more streams.

[0083] Since the indoor unit of the air conditioner is installed in the cabinet 10, the front airflow is usually adopted, and the incoming air flow can blow more smoothly and directly to the front side of the heat exchanger 22, while it is more laborious or the process is more tortuous to flow to other parts of the heat exchanger 22. This causes the incoming air flow received by various parts of the heat exchanger 22 to be uneven, so that the heat exchange of different parts of the heat exchanger 22 is uneven, resulting in the heat exchange capacity of the heat exchanger 22 not being fully utilized, and the heat exchange efficiency is reduced, which in turn leads to a decrease in the energy efficiency of the air conditioner. At the same time, when the air conditioner is cooling, the part of the heat exchanger 22 that receives less incoming air flow is insufficiently heated, resulting in a lower temperature and easy ice formation. The air conditioner indoor unit 20 of the utility model embodiment is provided with a partition 26 in the casing 21. The partition 26 can divide the incoming air flow into multiple airflows, so that the multiple airflows flow to different parts of the heat exchanger 22 respectively, so that the heat exchange of each part of the heat exchanger 22 is uniform, and local icing will not occur. In addition, the heat exchange capacity of the heat exchanger 22 can be fully utilized, the heat exchange efficiency is higher, and the air conditioner function energy efficiency is higher.

[0084] The embodiment of the utility model also provides an air conditioning device.

[0085] like Figure 5 and Figure 6 As shown, the air conditioning device 100 includes a cabinet 10 and an air conditioner indoor unit 20. The cabinet 10 includes a cabinet body 11 and a cabinet door 12. The cabinet body 11 has an opening 110. The cabinet door 12 is movably disposed on the cabinet body 11 to open and close the opening 110. The air conditioner indoor unit 20 is disposed in the cabinet 10, and its air outlet 212 is on the same side as the opening 110. The air outlet 292 is connected to the cabinet door 12 so that when the cabinet door 12 is in a closed state, the air outlet 292 is in a retracted state, as shown in FIG. Figure 5 When the door 12 is in the open state, the air outlet 292 is in the extended state, such as Figure 6 , so as to expose the air outlet 2920 so as to supply air to the outside of the cabinet 10. The air conditioning device of the embodiment of the utility model uses an external air guide 29 to guide the outlet airflow to the outside of the cabinet 10, so as to avoid the outlet airflow affecting the inlet airflow, and the design is simple and ingenious.

[0086] The A end of the air inlet 291 can be sealed with the housing 21 to prevent the outlet air from flowing out through the gap between the two. The E end of the air outlet 292 can also be sealed with the inner side surface of the cabinet door 12 to prevent the outlet air from flowing out through the gap between the two. In this way, the outlet air flows out only through the air outlet 2920 to avoid leakage, especially to prevent the outlet air from mixing with the inlet air after leakage.

[0087] Preferably, the upper edge D of the cabinet door 12 can be rotatably mounted on the cabinet body 11, such as Figure 5 and Figure 6Furthermore, the air outlet 292 is opened downward, and the external air guide tube 29 is in the maximum extension state (such as Figure 6 ), the air outlet is completely located at the front of the cabinet 11 so that the downward air flow will not be disturbed by the bottom wall of the cabinet 11.

[0088] Since the cabinet door 12 is opened and closed by rotation, during the opening and closing process, the angle of the air outlet 292 will change with the rotation of the cabinet door 12, and its motion trajectory is not translation. Therefore, the air inlet 291 and the housing 21 can be flexibly connected, and the air outlet 292 and the cabinet door 12 can be flexibly connected, leaving a certain margin for the rotation of the air inlet 291 and the air outlet 292 to avoid the two from getting stuck, which is beneficial to the opening and closing process of the cabinet door 12.

[0089] In other embodiments, the lower edge or the lateral edge of the cabinet door 12 may also be rotatably mounted on the cabinet body 11 , which will not be described in detail here.

[0090] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in 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.

[0091] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An external air duct for an indoor unit of an air conditioner, characterized in that include: An air inlet cylinder, which is open at both axial ends, and one axial end of which is used to connect with the air outlet of the air conditioner indoor unit to introduce the air flow from the air outlet; and The air outlet cylinder has an air outlet on its peripheral wall and is open at least at one axial end, and the open end is plugged into the other axial end of the air inlet cylinder; and The air outlet cylinder can translate along the axial direction of the air inlet cylinder to a retracted state in which the air outlet is shielded by the cylinder wall of the air inlet cylinder, or to an extended state in which the air outlet is away from the air inlet cylinder to allow it to discharge the outlet airflow.

2. The external air duct according to claim 1, characterized in that: One axial end of the air outlet cylinder is open, and the other axial end is closed, so that only the air outlet of the air outlet cylinder is used for air outlet.

3. The external air duct according to claim 1, characterized in that: The air outlet cylinder is inserted into the interior of the air inlet cylinder.

4. The external air duct according to claim 1, characterized in that: The air outlet cylinder is configured to be rotatable around its own central axis in the air inlet cylinder to adjust the direction of the air outlet.

5. An air conditioner indoor unit, characterized in that include: a casing having an air outlet for discharging air; and The external air duct as described in any one of claims 1 to 4, wherein the external air duct is arranged outside the casing, and one axial end of the air inlet duct is connected to the air outlet to introduce the outlet air flow of the air outlet and discharge the outlet air flow through the air outlet.

6. The air conditioner indoor unit according to claim 5, characterized in that: The air conditioner indoor unit is of embedded type and is used for being embedded in a preset chamber.

7. The air conditioner indoor unit according to claim 6, characterized in that: The chamber is a chamber of a cabinet; The cabinet comprises a cabinet body and a cabinet door, the cabinet body has an opening, and the cabinet door is movably arranged on the cabinet body to open and close the opening; and The air outlet is connected to the cabinet door so that when the cabinet door is in a closed state, the air outlet is in the retracted state; when the cabinet door is in an open state, the air outlet is in the extended state to expose the air outlet so as to supply air to the outside of the cabinet.

8. An air conditioning device, characterized in that include: A cabinet comprising a cabinet body and a cabinet door, wherein the cabinet body has an opening, and the cabinet door is movably arranged on the cabinet body to open and close the opening; and The air conditioner indoor unit according to claim 5, which is arranged in the cabinet, and its air outlet is on the same side as the opening; and The air outlet is connected to the cabinet door so that when the cabinet door is in a closed state, the air outlet is in the retracted state; when the cabinet door is in an open state, the air outlet is in the extended state to expose the air outlet so as to supply air to the outside of the cabinet.

9. The air conditioning device according to claim 8, characterized in that: The air inlet cylinder is sealed with the housing to prevent the air outlet from flowing out through the gap between the two; and The air outlet tube is sealed against the inner side surface of the cabinet door to prevent the air outlet from flowing out through the gap between the two.

10. The air conditioning equipment according to claim 8, characterized in that: The upper side of the cabinet door is rotatably mounted on the cabinet body; and The air inlet duct is flexibly connected to the casing, and the air outlet duct is flexibly connected to the cabinet door, so as to facilitate the opening and closing process of the cabinet door.

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