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 guide cylinder is cylindrical, an air inlet is formed in the first end in the length direction of the external air guide cylinder, an air outlet is formed in the peripheral wall of the external air guide cylinder, the air inlet is used for being connected with an air outlet of an air conditioner indoor unit to introduce outlet air flow of the air outlet, and the air outlet is used for discharging the outlet air flow; and the external air guide cylinder is configured to extend or contract in the length direction of the external air guide cylinder, so that the air outlet section of the air outlet is enlarged when the external air guide cylinder extends, and the air outlet section of the air outlet is reduced when the external air guide cylinder contracts. 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. When 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 guide tube for an indoor unit of an air conditioner, wherein the external air guide tube is cylindrical, and has an air inlet at a first end in a length direction thereof, and an air outlet on a peripheral wall thereof, wherein the air inlet is used to connect with an air outlet of the indoor unit of the air conditioner to introduce an outlet airflow of the air outlet, and the air outlet is used to discharge the outlet airflow; and

[0009] The external air guide tube is configured to be able to extend or contract along its own length direction, so that when it is extended, the air outlet cross-section of the air outlet becomes larger, and when it is contracted, the air outlet cross-section of the air outlet becomes smaller.

[0010] Optionally, at least a portion of the external air guide tube is wavy in shape so that it can be unfolded or folded along the length direction under the action of external force, thereby achieving extension or contraction.

[0011] Optionally, at least a partial section of the external air guide tube is made of soft elastic material so as to produce elastic deformation under the action of external force, thereby achieving extension or contraction.

[0012] Optionally, the external air guide tube is configured to have a minimum contraction state that completely closes the air outlet.

[0013] Optionally, the external air guide tube is configured to bend under force to adjust the direction of the air outlet.

[0014] On the other hand, the utility model also provides an air conditioner indoor unit, which includes:

[0015] a housing having an air outlet for discharging air; and

[0016] As described in any of the above items, the external air duct is arranged outside the casing, and the first end of the external air duct is installed on the casing so that the air inlet is connected to the air outlet to introduce the outlet air flow of the air outlet, and the outlet air flow is discharged through the air outlet.

[0017] Optionally, the air-conditioning indoor unit is of embedded type, and is used to be embedded in a preset chamber.

[0018] Optionally, the chamber is a chamber of a cabinet;

[0019] The cabinet comprises 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;

[0020] The second end of the external air duct in the length direction is used to connect to the cabinet door, so that when the cabinet door is closed, the external air duct is retracted inside the cabinet; when the cabinet door is opened, the external air duct is pulled by the cabinet door and extended to supply air to the outside of the cabinet through the air outlet.

[0021] In another aspect, the utility model further provides an air conditioning device, comprising:

[0022] 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

[0023] The air conditioner indoor unit is arranged in the cabinet, and its air outlet is on the same side as the opening; and

[0024] The second end of the external air duct in the length direction is connected to the cabinet door so that when the cabinet door is closed, the external air duct is retracted inside the cabinet body; when the cabinet door is opened, the external air duct is pulled by the cabinet door and extended to supply air to the outside of the cabinet through the air outlet.

[0025] Optionally, the first end of the external air guide tube is sealed with the housing to prevent the outlet air from flowing out through a gap therebetween; and

[0026] The second end of the external air guide tube is sealed against the inner side surface of the cabinet door to prevent the outlet air from flowing out through the gap therebetween.

[0027] The utility model is provided with an external air guide tube outside the indoor unit of the air conditioner, and the external air guide tube can be used to guide the air flow of the air outlet, and guide the air flow to the desired position to adjust the air outlet direction. In addition, the external air guide tube can be extended or contracted along its own length direction, thereby adjusting the air outlet cross-section of the air outlet, and then 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.

[0028] 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.

[0029] Furthermore, when the external air duct of the utility model is applied to the indoor unit of the embedded air conditioner, the second end of the external air duct in the length direction is connected to the cabinet door, so that when the cabinet door is closed, the external air duct is retracted inside the cabinet; when the cabinet door is opened, the external air duct is pulled by the cabinet door and extended, so that air is supplied to the outside of the cabinet from the air outlet, and 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 extension and contraction of the external air duct while opening and closing the cabinet door, making the user operation simpler and more efficient.

[0030] 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.

[0031] 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

[0032] 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:

[0033] Figure 1 It is a schematic structural diagram of an external air guide tube according to an embodiment of the utility model;

[0034] Figure 2 yes Figure 1 A schematic diagram of the external air duct after extension is shown;

[0035] Figure 3 is a structural schematic diagram of an air-conditioning indoor unit according to an embodiment of the utility model;

[0036] Figure 4 yes Figure 3 NN profile diagram;

[0037] Figure 5 yes Figure 4 The schematic diagram of the indoor unit of the air conditioner shown is after the external air duct is extended;

[0038] Figure 6 yes Figure 3 The schematic diagram of the state where the indoor unit of the air conditioner is embedded in the cabinet is shown;

[0039] Figure 7 yes Figure 6 The structure shown is a schematic diagram of the state after the cabinet door is opened. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] The embodiment of the utility model provides an external air duct 29 for an air conditioner indoor unit 20 .

[0048] Figure 1 It is a structural schematic diagram of an external air guide tube 29 according to an embodiment of the utility model; Figure 2 yes Figure 1 The schematic diagram of the external air guide tube 29 after extension is shown; Figure 3 is a schematic structural diagram of an air-conditioning indoor unit 20 according to an embodiment of the utility model; Figure 4 yes Figure 3 NN profile diagram; Figure 5 yes Figure 4 The schematic diagram of the air conditioner indoor unit 20 is shown after the external air guide tube 29 is extended. Figure 2 The dotted lines in the figure represent the invisible lines at the bottom and rear of the external air guide tube 29. Figure 1 , Figure 5 Arrows indicate wind direction.

[0049] like Figures 1 to 5 As shown, the external air guide tube 29 of the embodiment of the utility model is cylindrical, and can be cylindrical, square cylindrical (such as Figure 1 ), elliptical cylinder or other cylinders. The embodiment of the utility model does not limit the overall shape of the external air guide cylinder 29.

[0050] The two ends of the external air duct 29 in the length direction (or axial direction, i.e. the positive and negative directions of the x-axis marked in the figure) are respectively marked as the first end A and the second end B. Among them, the first end A has an air inlet 291, that is, the first end A is open, and the peripheral wall of the external air duct 29 has an air outlet 292. The second end B in the length direction of the external air duct 29 can be an open structure or a closed structure, which is not limited in the embodiment of the utility model. The air inlet 291 is used to connect with the air outlet 212 of the air-conditioning indoor unit 20 to introduce the outlet air flow of the air outlet 212, and the air outlet 292 is used to discharge the outlet air flow. The number of air outlets 292 can be one or more. When multiple air outlets 292 are provided, air can be supplied in multiple directions at the same time.

[0051] The external air guide tube 29 is configured to be able to extend or contract along its own length direction (positive and negative directions of the x-axis) so that when extended (for example, from Figure 1 to Figure 2 ,from Figures 4 to 5 ), so that the outlet cross-section of the air outlet 292 becomes larger; when contracting (for example, from Figure 2 to Figure 1 ,from Figure 5 to Figure 4), so that the air outlet cross section of the air outlet 292 becomes smaller. The external air guide tube 29 can adjust the air outlet volume by this, including adjusting the air outlet cross section of the air outlet 292 to 0.

[0052] The first end A of the external air duct 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 duct 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 external air duct 29 is connected to the housing 21 in a snap-fit ​​manner. Alternatively, the connection mechanism is only a flange of the external air duct 29 so that the external air duct 29 is connected to the housing 21 in an adhesive manner.

[0053] In some solutions, the extension and contraction of the external air duct 29 are both achieved by applying an external force. For example, when the external air duct 29 is not acted upon by an external force, it can be maintained in a maximum extension state, that is, a state in which it cannot be extended further, or in a minimum contraction state, that is, a state in which it cannot be contracted further, or in any state between the maximum extension state and the minimum contraction state. Any change in the state of the external air duct 29 requires the assistance of an external force.

[0054] In other solutions, the extension and contraction of the external air duct 29 are achieved by applying external force and its own elastic force. When the external air duct 29 is not subjected to external force, it can maintain a normal state between the maximum extension state and the minimum contraction state, and requires external force for extension or contraction. After extension or contraction, it can return to the normal state by its own elastic force.

[0055] In other solutions, the extension and contraction of the external air duct 29 are achieved by applying external force and its own elastic force. When the external air duct 29 is not acted upon by external force, it can remain in the minimum contraction state, and external force is required for extension. After extension, it can return to the minimum contraction state by its own elastic force.

[0056] In other solutions, the extension and contraction of the external air duct 29 are achieved by applying external force and its own elastic force. When the external air duct 29 is not acted upon by external force, it can remain in the maximum extension state, and needs external force to contract. After contraction, it can return to the maximum extension state by its own elastic force.

[0057] 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.

[0058] In addition, the external air guide tube 29 can be extended or contracted along its length direction to adjust the air outlet cross section of the air outlet 292, so that the air outlet area is adjustable. The embodiment of the utility model uses the external air guide tube 29 to replace the traditional air outlet structures such as the traditional air guide plate and the swing blade, which is very clever and innovative, and the overall structure is simple and the cost is lower.

[0059] In some embodiments of the present invention, Figures 1 to 5 As shown, at least part of the external air guide tube 29 is wavy, or called a broken line, so that it can be expanded or folded along the length direction under the action of external force, thereby achieving extension or contraction. Figure 1 and Figure 4 The external air guide tube 29 is shown to be retracted to the minimum retracted position. Figure 2 and Figure 5 The external air guide tube 29 is shown extended to the maximum extension position.

[0060] It is understandable that the extension or contraction of the external air duct 29 can be achieved by only making a part of the external air duct 29 wavy, and 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 wavy as a whole.

[0061] In some embodiments of the utility model, the external air duct 29 is made of a soft elastic material to produce elastic deformation under the action of an external force, thereby achieving elongation or contraction. 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 may be rubber or plastic. It is understandable that the elongation or contraction 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 may be any section of the external air duct 29, which may 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.

[0062] In addition, the external air guide tube 29 can also be made of other existing materials that can achieve overall structural expansion and contraction, which will not be described in detail here.

[0063] In some embodiments of the present invention, reference Figure 4 The external air duct 29 is configured to have a minimum contraction state that completely closes the air outlet 292. In this way, when the air conditioner indoor unit 20 is in a shutdown state, the external air duct 29 can be in the minimum contraction state to close the air outlet 292 and prevent foreign matter such as dust from entering the external air duct 29 through the air outlet 292.

[0064] In some embodiments of the utility model, the external air duct 29 is configured to be able to bend under force to adjust the direction of the air outlet 292, thereby adjusting the direction of the air outlet. Specifically, the second end B of the external air duct 29 can be movably arranged, and the user can manually move the second end B to bend the external air duct 29, thereby adjusting the direction of the air outlet 292. Alternatively, a driving mechanism can also be designed, so that the driving mechanism is connected to the second end B of the external air duct 29 to adjust the position of the second end B, thereby bending the external air duct 29, thereby adjusting the direction of the air outlet 292.

[0065] In some embodiments of the present invention, the second end B of the external air duct 29 may be an open structure for air discharge. In this way, the external air duct 29 forms a multi-dimensional air discharge structure in which the second end B and the air outlet 292 discharge air together, which is conducive to the diffusion of the air flow. Furthermore, the second end B of the external air duct 29 may be provided with a damper or an air guide structure for opening and closing the second end B or adjusting its air discharge direction / air discharge volume.

[0066] The embodiment of the utility model further provides an air conditioner indoor unit 20 having the above-mentioned external air duct 29.

[0067] 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.

[0068] like Figures 3 to 5 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.

[0069] The housing 21 has an air outlet 212 for discharging air. The external air guide 29 is disposed outside the housing 21, and a first end of the external air guide 29 is mounted on the housing 21 so that the air inlet 291 is connected to the air outlet 212 to introduce the air flow of the air outlet 212, and the air flow is discharged through the air outlet 292.

[0070] Figure 4 Schematic diagram of an optional form of the air conditioner indoor unit 20. Figure 4 As shown, the air-conditioning indoor unit 20 may generally include a casing 21 , a fan 23 , and a heat exchanger 22 .

[0071] 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.

[0072] 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.

[0073] Figure 6 yes Figure 3 The schematic diagram of the state where the air conditioner indoor unit 20 is embedded in the cabinet 10; Figure 7 yes Figure 6 The structure shown is a schematic diagram of the state after the cabinet door 12 is opened. Figure 7 Arrows indicate wind direction.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] Furthermore, in some embodiments, Figure 6 and Figure 7 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 second end B of the external air duct 29 in the length direction is used to connect to the cabinet door 12, so that when the cabinet door 12 is closed, the external air duct 29 is retracted inside the cabinet body 11, as shown in FIG. Figure 6 When the door 12 is opened, the external air duct 29 is pulled by the door 12 and stretched to supply air from the air outlet 292 toward the outside of the cabinet 10, such as Figure 7 . In this way, when the cabinet door 12 is closed, the external air duct 29 is retracted inside the cabinet body 11; when the cabinet door 12 is opened, the external air duct 29 is pulled by the cabinet door 12 and extended, so that air is supplied to the outside of the cabinet 10 from the air outlet 292, and the air outlet area of ​​the air outlet 292 is also related to the opening angle of the cabinet door 12. It can be seen that the embodiment of the utility model realizes the extension and contraction of the external air duct 29 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, air is discharged by the external air duct 29, so the opening angle of the cabinet door 12 is sufficient to expose the air outlet 292, and there is no need to open it to a too large angle, which saves more space.

[0078] The direction of the air outlet 292 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 292 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 292 can also be provided to deliver air in different directions.

[0079] The first end A of the external air duct 29 can be sealed with the housing 21 to prevent the outlet air from flowing out through the gap between the two. The second end B of the external air duct 29 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 292 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 second end B of the external air duct 29. The connection structure may be a hole or a threaded hole so as to be connected to the external air duct 29 by threaded connection. Alternatively, the connection structure may be a buckle or a snap-fit ​​hole so as to be connected to the external air duct 29 by snap-fit. Alternatively, the external air duct 29 and the cabinet door 12 may be connected by gluing.

[0081] In other embodiments, the second end B of the external air duct 29 can be slidably installed on the cabinet door 12 so as to slidably adjust the position of the second end B on the cabinet door 12 and further adjust the direction of the air outlet 292 .

[0082] In some embodiments, Figure 5 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 6 and Figure 7 As shown, the air conditioning device 100 includes a cabinet 10 and an air conditioning 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 arranged on the cabinet body 11 for opening and closing the opening 110. The air conditioning indoor unit 20 is arranged in the cabinet 10, and its air outlet 212 is on the same side as the opening 110. The second end B of the external air duct 29 in the length direction is connected to the cabinet door 12, so that when the cabinet door 12 is closed, the external air duct 29 is retracted inside the cabinet body 11; when the cabinet door 12 is opened, the external air duct 29 is pulled by the cabinet door 12 and stretched, so that air is supplied from the air outlet to the outside of the cabinet 10. The air conditioning device of the embodiment of the utility model uses an external air duct 29 to guide the outlet airflow to the outside of the cabinet 10, so as to prevent the outlet airflow from affecting the inlet airflow, and the design is simple and ingenious.

[0086] Preferably, the upper edge D of the cabinet door 12 can be rotatably mounted on the cabinet body 11, such as Figure 6 and Figure 7 Furthermore, the air outlet 292 is opened downward, and the external air guide tube 29 is in the maximum extension state (such as Figure 7 ), the air outlet 292 is completely located in the front of the cabinet 11, so that the downward air flow will not be disturbed by the bottom wall of the cabinet 11. Further, the cabinet door 12 is configured to be opened outward to make the external air guide tube 29 in the maximum extension state, so that the lower edge of the cabinet door 12 is lower than the bottom wall of the cabinet 11, so that the cabinet door 12 can be used to guide the air downward to prevent the cold air / hot air from blowing directly on the human body. This structure is suitable for the case where the air conditioning device 100 is installed at a higher position.

[0087] In other embodiments, the lower edge or lateral edge of the cabinet door 12 can also be rotatably mounted on the cabinet body 11, which will not be described in detail here. The first end of the external air duct 29 can be sealed with the housing 21 to prevent the outlet air from flowing out through the gap between the two. The second end of the external air duct 29 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 flow only flows out through the air outlet 292 to avoid leakage, especially to prevent the outlet air flow from mixing with the inlet air flow after leakage.

[0088] 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.

[0089] 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: The external air guide cylinder is cylindrical, and has an air inlet at the first end in the length direction, and an air outlet on the peripheral wall, wherein the air inlet 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 is used to discharge the air flow; and The external air guide tube is configured to be able to extend or contract along its own length direction, so that when it is extended, the air outlet cross-section of the air outlet becomes larger, and when it is contracted, the air outlet cross-section of the air outlet becomes smaller.

2. The external air duct according to claim 1, characterized in that: At least part of the sections of the external air guide tube are wavy so as to be expanded or folded along the length direction under the action of external force, thereby achieving extension or contraction.

3. The external air duct according to claim 1, characterized in that: At least a portion of the external air guide tube is made of soft elastic material so as to produce elastic deformation under the action of external force, thereby achieving extension or contraction.

4. The external air duct according to claim 1, characterized in that: The external air guide tube is configured to have a minimum contraction state that completely closes the air outlet.

5. The external air duct according to claim 1, characterized in that: The external air guide tube is configured to be able to bend under force to adjust the direction of the air outlet.

6. 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 5, wherein the external air duct is arranged outside the casing, and the first end of the external air duct is installed on the casing so that the air inlet is connected to the air outlet to introduce the outlet air flow of the air outlet, and the outlet air flow is discharged through the air outlet.

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

8. The air conditioner indoor unit according to claim 7, 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 second end of the external air duct in the length direction is used to connect to the cabinet door, so that when the cabinet door is closed, the external air duct is retracted inside the cabinet; when the cabinet door is opened, the external air duct is pulled by the cabinet door and extended to supply air to the outside of the cabinet through the air outlet.

9. 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 6, which is arranged in the cabinet, and its air outlet is on the same side as the opening; and The second end of the external air duct in the length direction is connected to the cabinet door so that when the cabinet door is closed, the external air duct is retracted inside the cabinet body; when the cabinet door is opened, the external air duct is pulled by the cabinet door and extended to supply air to the outside of the cabinet through the air outlet.

10. The air conditioning equipment according to claim 9, characterized in that: The first end of the external air guide tube is sealed with the housing to prevent the outlet air from flowing out through the gap between the two; and The second end of the external air guide tube is sealed against the inner side surface of the cabinet door to prevent the outlet air from flowing out through the gap therebetween.

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