Air duct assembly, air conditioner indoor unit and air conditioner unit

Abstract

The utility model relates to an air duct assembly, an air conditioner indoor unit and an air conditioner unit. The air duct assembly comprises a shell, a water receiving component and a heat exchanger. One side of the housing has a first opening extending in a first direction. The water receiving part is installed in the shell through the first opening. The water receiving part comprises a cylindrical shell. A second opening is formed in the side wall, close to the first opening, of the water receiving component. The heat exchanger is of an arc-shaped plate-shaped structure and seals the second opening. The water receiving component comprises a first limiting part and a second limiting part which are connected with the cylindrical shell, and the first limiting part and the second limiting part are arranged close to the second opening and abut against the two ends, in the circumferential direction, of the heat exchanger correspondingly so as to limit deflection of the heat exchanger in the circumferential direction. Through the limiting and abutting effects of the first limiting part and the second limiting part on the two circumferential ends of the heat exchanger, the risk that the heat exchanger deflects in the circumferential direction is reduced, and therefore the risk that the heat exchanger shakes accidentally is reduced, the consistency of air channels between products is guaranteed, the air outlet performance of the products is guaranteed, and the use experience of a user is improved.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, and in particular to a duct assembly, an indoor air conditioning unit, and an air conditioning system. Background Technology

[0002] Currently, air conditioning units have arc-shaped heat exchangers installed in their ductwork components. After installation, these arc-shaped heat exchangers are prone to displacement during transportation and use, affecting the consistency of the product's ductwork. Utility Model Content

[0003] Embodiments of this disclosure provide a duct assembly, an indoor air conditioning unit, and an air conditioning system that can improve the positional stability of a heat exchanger.

[0004] According to a first aspect of this disclosure, a duct assembly is provided, comprising:

[0005] The housing has a first opening extending in a first direction on one side;

[0006] A water-receiving component is installed inside the housing through a first opening. The water-receiving component includes a cylindrical housing, and a second opening is provided on the side wall of the water-receiving component near the first opening; and

[0007] The heat exchanger, with an arc-shaped plate structure, is positioned at the second opening and the second opening is sealed.

[0008] The water receiving component also includes a first limiting part and a second limiting part connected to the cylindrical shell. The first limiting part and the second limiting part are located near the second opening and are configured to abut against the two ends of the heat exchanger along the circumferential direction to limit the heat exchanger from deflecting in the circumferential direction.

[0009] In some embodiments, a first limiting portion is disposed at the upper edge of the second opening in the circumferential direction, a second limiting portion is disposed in the bottom region of the inner wall of the cylindrical shell, a first end of the heat exchanger in the circumferential direction abuts against the first limiting portion, and a second end of the heat exchanger in the circumferential direction extends into the second opening and abuts against the second limiting portion.

[0010] In some embodiments, the first limiting portion includes a limiting rib that extends along a first direction and is folded outward.

[0011] In some embodiments, the second limiting portion includes a limiting step extending along a first direction.

[0012] In some embodiments, the water receiving component further includes a support assembly connected to the cylindrical shell and configured to support the heat exchanger.

[0013] In some embodiments, the support assembly includes a first support portion disposed at a second opening and fixedly connected to a first limiting portion, the first support portion being configured to support the upper region of the inner side surface of the heat exchanger.

[0014] In some embodiments, the first support portion includes a connecting rod and a plurality of first support plates. The connecting rod extends along a first direction and its two ends are respectively connected to the cylindrical shell. The plurality of first support plates are spaced apart in the first direction, and each first support plate is connected to the first limiting portion and the connecting rod at its two ends along the circumferential direction.

[0015] In some embodiments, the plurality of first support plates are divided into two groups along a first direction, and the inclination directions of the two groups of first support plates are opposite; and for the same group of first support plates, the first end of the first support plate connected to the first limiting part is closer to the end wall of the cylindrical shell on the same side relative to the second end of the connecting rod.

[0016] In some embodiments, the first support plate is adapted to the shape of the inner surface of the heat exchanger and is at an angle, and the first support plate is used to guide droplets formed on the upper surface of the heat exchanger to the inner cavity of the cylindrical shell.

[0017] In some embodiments, the support assembly further includes a second support portion, which is fixedly connected to the cylindrical shell and is located circumferentially on the side of the second limiting portion near the second opening. The second support portion is configured to support the lower region of the outer side of the heat exchanger.

[0018] In some embodiments, the second support portion includes a plurality of second support plates, which are spaced apart in a first direction.

[0019] In some embodiments, a plurality of second support plates are adapted to the shape of the outer surface of the heat exchanger and are angled, and the second support plates are used to guide droplets formed on the outer surface of the lower region of the heat exchanger to the inner cavity of the cylindrical shell.

[0020] In some embodiments, the second support plate is an arcuate plate that extends circumferentially over the cylindrical shell, a portion of the second support plate is located inside the cylindrical shell, and another portion of the second support plate extends out of the cylindrical shell and abuts against the inner wall of the shell.

[0021] In some embodiments, the plurality of second support plates are divided into two groups along the first direction, and the inclination directions of the two groups of second support plates are opposite; and for the same group of second support plates, the first end of the second support plate near the second opening is closer to the end wall of the cylindrical shell on the same side than the second end near the second limiting portion.

[0022] In some embodiments, at least one end of the cylindrical housing along a first direction is configured to be fixedly connected to the housing.

[0023] In some embodiments, the cylindrical housing is recessed near the first limiting portion to form a water collection tank.

[0024] In some embodiments, the sidewall of the cylindrical shell away from the second opening is provided with a recess, and the inner sidewall of the shell away from the first opening is provided with a protrusion, and the recess and the protrusion cooperate for positioning.

[0025] In some embodiments, a centrifugal fan is also included. The centrifugal fan is disposed at the end of the outer side of the housing along a first direction. The end wall of the water receiving component is provided with a collection port communicating with the air inlet of the centrifugal fan. An outwardly extending flange is provided at the edge of the collection port. An inclined support structure is provided on the inner wall surface of the housing opposite to the flange. The inclined support structure supports the flange from the lower side and fits the flange to limit the heat exchanger in the first direction.

[0026] According to a second aspect of this disclosure, an air conditioning indoor unit is provided, including the fan assembly of the above embodiments.

[0027] According to a third aspect of this disclosure, an air conditioning unit is proposed, including the indoor unit of the above-described embodiments.

[0028] Based on the above technical solution, in the air duct assembly of this embodiment, the first limiting part and the second limiting part are spaced apart in the circumferential direction. This can form a limiting and abutting effect on both ends of the heat exchanger in the circumferential direction, reducing the risk of the heat exchanger deflecting in the circumferential direction, enhancing the positional stability of the heat exchanger, thereby reducing the risk of collision and damage to the air duct assembly due to accidental shaking of the heat exchanger during transportation and use, preventing deformation of the water receiving parts and the shell, ensuring the consistency of air ducts between products, ensuring the air outlet performance of the product, and improving the user experience. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation of the disclosure. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the water receiving component in the air duct assembly of some embodiments of this disclosure.

[0031] Figure 2 This is a side view of a water receiving component in a duct assembly according to some embodiments of this disclosure.

[0032] Figure 3 This is an overall schematic diagram of the air duct assembly in some embodiments of this disclosure.

[0033] Figure 4 This is a cross-sectional view of a duct assembly in some embodiments of this disclosure.

[0034] Figure 5 This is a schematic diagram showing a fan mounted on the side of the duct assembly in some embodiments of this disclosure.

[0035] Figure 6 This is a schematic diagram of a protrusion on the housing of a duct assembly in some embodiments of this disclosure.

[0036] Figure 7 This is a schematic diagram of the inclined support structure in the air duct assembly of some embodiments of this disclosure.

[0037] Explanation of reference numerals in the attached figures

[0038] 1. Shell; 11. First opening; 12. Through hole

[0039] 2. Water receiving component; 21. Second opening; 22. First limiting part; 23. Second limiting part; 24. First supporting part; 241. Connecting rod; 242. First support plate; 25. Second supporting part; 251. Second support plate; 26. Inlet;

[0040] 3. Heat exchanger;

[0041] 4. Water collection tank;

[0042] 5. Depression;

[0043] 6. Protruding part;

[0044] 7. Centrifugal fan blades;

[0045] 8. Flip the edge;

[0046] 9. Inclined support structure;

[0047] x, first direction; y, second direction; z, third direction; A, groove. Detailed Implementation

[0048] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0049] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0050] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0051] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0052] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0053] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0054] The inventors discovered through research that installing an arc-shaped heat exchanger in an air conditioning unit can improve the heat exchange efficiency of the airflow by utilizing a larger heat exchange surface. However, arc-shaped heat exchangers have the problem of poor stability and are prone to accidental shaking during transportation and use, which may damage the air duct, affect its expected airflow performance, and thus reduce the user experience.

[0055] Therefore, refer to Figures 1-5 This disclosure provides an air duct assembly in some embodiments, including:

[0056] The housing 1 has a first opening 11 extending along a first direction x on one side;

[0057] The water receiving component 2 is installed inside the housing 1 through the first opening 11. The water receiving component 2 includes a cylindrical housing. A second opening 21 is provided on the side wall of the water receiving component 2 near the first opening 11; and

[0058] The heat exchanger 3 has an arc-shaped plate structure and is located at the second opening 21, and the second opening 21 is closed.

[0059] The water receiving component 2 also includes a first limiting part 22 and a second limiting part 23 connected to the cylindrical shell. The first limiting part 22 and the second limiting part 23 are disposed near the second opening 21 and are configured to abut against the two ends of the heat exchanger 3 in the circumferential direction to limit the heat exchanger 3 from deflecting in the circumferential direction.

[0060] Specifically, the shell 1 is generally rectangular. The rectangular structure is open on one side along the second direction y, forming a first opening 11. The second direction y is perpendicular to the first direction x. A water receiving component 2 is disposed inside the shell 1, and the first opening 11 and the second opening 21 face substantially the same direction, defined as forward, or front side. The opposite side of the front side is defined as the rear side; that is, the rear side of the shell 1 is closed. The heat exchanger 3 is located closer to the first opening 11 within the shell 1. The lower side of the water receiving component 2 contacts the inner wall of the bottom of the shell 1, allowing the shell 1 to support the water receiving component 2. At least a portion of the water receiving component 2 can be cylindrical, allowing it to collect condensate formed on the heat exchanger 3 during use by the air duct assembly.

[0061] In this embodiment, the first limiting part 22 and the second limiting part 23 are spaced apart in the circumferential direction. This provides limiting and abutting action at both ends of the heat exchanger 3 in the circumferential direction, reducing the risk of the heat exchanger 3 deflecting in the circumferential direction, enhancing the positional stability of the heat exchanger 3, thereby reducing the risk of collision and damage to the air duct assembly due to accidental shaking of the heat exchanger 3 during transportation and use, preventing deformation of the water receiving part 2 and the shell 1, ensuring the consistency of the air duct between products, ensuring the air outlet performance of the product, and thus improving the user experience.

[0062] like Figure 2 As shown, in some embodiments, the first limiting part 22 is disposed at the upper edge of the second opening 21 in the circumferential direction, the second limiting part 23 is disposed in the bottom region of the inner wall of the cylindrical shell, the first end of the heat exchanger 3 in the circumferential direction abuts against the first limiting part 22, and the second end of the heat exchanger 3 in the circumferential direction extends into the second opening 21 and abuts against the second limiting part 23.

[0063] In this embodiment, a portion of the heat exchanger 3 closes the second opening 21, while the other portion of the heat exchanger 3 extends into the cylindrical shell. This arrangement allows for the installation and fixation of the heat exchanger 3 within a limited space, which helps reduce the overall volume of the duct assembly, improves space utilization and equipment compactness, shortens the air supply path, and optimizes airflow efficiency. Furthermore, a first limiting part 22 is located at the upper edge of the second opening 21 in the circumferential direction to abut against the upper end of the heat exchanger 3, and a second limiting part 23 is located at the bottom area of ​​the inner wall of the cylindrical shell to abut against the lower end of the heat exchanger 3 extending into the cylindrical shell. Thus, the two ends of the heat exchanger 3 can be abutted by the first limiting part 22 and the second limiting part 23, which can improve the stability of the heat exchanger 3 installation and prevent the heat exchanger 3 from shaking during transportation and use.

[0064] like Figure 1 and 2 As shown, in some embodiments, the first limiting portion 22 includes a limiting rib that extends along a first direction x and is folded outward.

[0065] Specifically, the limiting ribs extend continuously along the first direction x and are substantially equivalent in size to the heat exchanger 3 in the first direction x. Optionally, multiple limiting ribs are provided at intervals along the first direction x.

[0066] In this embodiment, the limiting rib extends along the first direction x, thereby increasing the contact area between the limiting rib and the first circumferential end of the heat exchanger 3, enhancing the limiting effect on the heat exchanger 3, and improving the positional stability of the heat exchanger 3. Moreover, the limiting rib is folded outward, and its surface forms an inclined surface. The first circumferential end of the heat exchanger 3 rests on the inclined surface, which allows the limiting rib to also play a supporting role from the underside of the first circumferential end of the heat exchanger 3 to a certain extent.

[0067] like Figure 1 As shown, in some embodiments, the second limiting portion 23 includes a limiting step extending along the first direction x.

[0068] Specifically, the limiting steps extend continuously along the first direction x and are substantially equivalent in size to the heat exchanger 3 in the first direction x. Optionally, multiple limiting steps are provided at intervals along the first direction x.

[0069] This embodiment extends the limiting step along the first direction x, which increases the contact area between the limiting step and the second circumferential end of the heat exchanger 3, enhances the limiting effect on the heat exchanger 3, and the limiting step also has high strength, which can greatly enhance the positional stability of the heat exchanger 3.

[0070] In some embodiments, the water receiving component 2 further includes a support assembly connected to the cylindrical shell and configured to support the heat exchanger 3.

[0071] In this embodiment, the support component can be located between the first limiting part 22 and the second limiting part 23 in the circumferential direction. The support component can support the arc-shaped surface of the heat exchanger 3, which can further improve the installation stability of the heat exchanger 3 and prevent the heat exchanger 3 from deforming.

[0072] like Figure 1 As shown, in some embodiments, the support assembly includes a first support portion 24, which is disposed at the second opening 21 and fixedly connected to the first limiting portion 22. The first support portion 24 is configured to support the upper region of the inner side of the heat exchanger 3.

[0073] Specifically, the first support portion 24 is located in the upper middle region of the second opening 21, supporting the inner side of the heat exchanger 3 located in this portion.

[0074] This embodiment allows the portion of the heat exchanger 3 near the first end to rest against the first support portion 24, providing support for the upper region of the heat exchanger 3 and thereby improving the positional stability of the heat exchanger 3.

[0075] In some embodiments, the first support portion 24 includes a connecting rod 241 and a plurality of first support plates 242. The connecting rod 241 extends along a first direction x and its two ends are respectively connected to the cylindrical shell. The plurality of first support plates 242 are spaced apart in the first direction x. Each first support plate 242 is connected to the first limiting portion 22 and the connecting rod 241 at its two ends along the circumferential direction.

[0076] In this embodiment, the connecting rod 241 is parallel to the first limiting part 22, and the first limiting part 22, the connecting rod 241, and the multiple first support plates 242 form a mesh support structure in the upper region of the second opening 21. This achieves both overall lightweighting of the water receiving component 2 and ensures stable support for the heat exchanger 3 through a stable structure. Furthermore, the gaps between adjacent first support plates 242 allow return air to pass through, ensuring efficient return airflow. In addition, the first support part 24 of the mesh support structure facilitates the condensate formed on the heat exchanger 3 to fall into the inner cavity of the water receiving component 2.

[0077] like Figure 1 As shown, in some embodiments, a plurality of first support plates 242 are divided into two groups along a first direction x, and the inclination directions of the two groups of first support plates 242 are opposite; and for the same group of first support plates 242, the first end of the first support plate 242 connected to the first limiting part 22 is closer to the end wall of the cylindrical shell on the same side relative to the second end of the connecting rod 241.

[0078] Specifically, in the two sets of first support plates 242, for the set of first support plates 242 near the first end of the cylindrical shell in the first direction x, the end connected to the first limiting part 22 is inclined towards the first end of the cylindrical shell relative to the end connected to the connecting rod 241. For the set of first support plates 242 near the second end of the cylindrical shell in the first direction x, the end connected to the first limiting part 22 is inclined towards the second end of the cylindrical shell relative to the end connected to the connecting rod 241. Multiple first support plates 242 in the same set can be arranged in parallel.

[0079] In this embodiment, when centrifugal fans are installed at both ends of the air duct assembly, the airflow that has been heated by the heat exchanger 3 can be guided by two sets of first support plates 242. The airflow is divided into two paths: one path is guided to the centrifugal fan at the first end of the cylindrical shell, and the other path is guided to the centrifugal fan at the second end of the cylindrical shell. This allows the air duct assembly to discharge air at both ends of the cylindrical shell simultaneously, increasing the air volume in a limited space and improving the air discharge efficiency.

[0080] In some embodiments, the first support plate 242 is adapted to the shape of the inner surface of the heat exchanger 3 and is at an angle. The first support plate 242 is used to guide droplets formed on the upper surface of the heat exchanger 3 to flow into the inner cavity of the cylindrical shell.

[0081] Specifically, the first support plate 242 may be in an inclined arc shape. Optionally, the first support plate 242 may be perpendicular to the inner surface of the heat exchanger 3 or at other angles.

[0082] During operation, when heat exchanger 3 undergoes heat exchange, condensate forms on the arc-shaped inner surface of heat exchanger 3. By setting the first support plate 242 at an angle to the inner surface of heat exchanger 3, the edge of the first support plate 242 in contact with the arc-shaped surface of heat exchanger 3 can guide the droplets, allowing the liquid to flow along the first support plate 242. This guides the condensate to flow down the first support plate 242 and reliably enter the inner cavity of the water receiving component 2, reducing liquid adhesion to heat exchanger 3 and improving the heat exchange efficiency of heat exchanger 3.

[0083] like Figures 1-4 As shown, in some embodiments, the support assembly further includes a second support portion 25, which is fixedly connected to the cylindrical shell and is located in the circumferential direction on the side of the second limiting portion 23 near the second opening 21. The second support portion 25 is configured to support the lower region of the outer side of the heat exchanger 3.

[0084] Specifically, the second support portion 25 is located circumferentially between the second limiting portion 23 and the first support portion 24.

[0085] This embodiment provides a second support portion 25 to support the bottom area of ​​the heat exchanger 3, providing reliable support from the outside to the bottom area of ​​the heat exchanger 3, thereby improving the positional stability of the heat exchanger 3.

[0086] Furthermore, by simultaneously providing the second support portion 25 and the first support portion 24, the areas near both ends of the heat exchanger 3 can be supported respectively. The first support portion 24 and the second support portion 25 support the inner and outer sides of the heat exchanger 3 respectively, and can also clamp the heat exchanger 3. This can significantly improve the stability of the heat exchanger 3, reduce the risk of the heat exchanger 3 falling off from the second opening 21, and prevent the heat exchanger 3 from shaking.

[0087] In some embodiments, the second support portion 25 includes a plurality of second support plates 251, which are spaced apart in a first direction x.

[0088] This embodiment allows the second support portion 25 to form a mesh support structure, which not only achieves overall weight reduction of the water receiving component 2, but also ensures stable support for the heat exchanger 3 through a stable structure. Furthermore, the gaps between adjacent second support plates 251 allow return air to pass through, ensuring efficient return airflow. In addition, the mesh support structure of the second support portion 25 also facilitates the drainage of condensate formed on the outer surface of the heat exchanger 3.

[0089] In some embodiments, the second support portion 25 further includes a fixing rod extending along a first direction x and connected to the end of the plurality of second support plates 251 near the second opening 21. The fixing rod can enhance the structural strength of the mesh support structure formed by the plurality of second support portions 25. At the same time, the fixing rod can support the lower region of the outer side of the heat exchanger 3, further improving the stability of the heat exchanger 3.

[0090] In some embodiments, a plurality of second support plates 251 are adapted to the shape of the outer surface of the heat exchanger 3 and are at an angle. The second support plates 251 are used to guide droplets formed on the outer surface of the lower region of the heat exchanger 3 to flow into the inner cavity of the cylindrical shell.

[0091] Specifically, the second support plate 251 may be in an inclined arc shape. Optionally, the second support plate 251 may be perpendicular to the outer surface of the heat exchanger 3 or at other angles.

[0092] During operation, when heat exchanger 3 undergoes heat exchange, condensate forms on the arc-shaped outer surface of heat exchanger 3. By setting the second support plate 251 at an angle to the inner surface of heat exchanger 3, the edge of the second support plate 251 in contact with the arc-shaped surface of heat exchanger 3 can guide the droplets, allowing the liquid to flow along the second support plate 251. This guides the condensate to flow down the second support plate 251 and reliably enter the inner cavity of the water receiving component 2, reducing liquid adhesion to heat exchanger 3 and improving the heat exchange efficiency of heat exchanger 3.

[0093] It is understandable that by setting the first support plate 242 and the second support plate 251 on the inner and outer sides of the heat exchanger 3 respectively to guide the flow, the condensate on both sides of the heat exchanger 3 can be fully guided and collected.

[0094] like Figures 2-4 As shown, in some embodiments, the second support plate 251 is an arc-shaped plate that extends circumferentially over the cylindrical shell. A portion of the second support plate 251 is located inside the cylindrical shell, and another portion of the second support plate 251 extends out of the cylindrical shell and abuts against the inner wall of the shell 1.

[0095] In this embodiment, the second support plate 251 is constructed as an arc-shaped plate, which enhances its adaptability to the outer surface of the heat exchanger 3, thereby providing better support for the heat exchanger 3 and guiding the condensate on the surface of the heat exchanger 3 to flow down in a timely manner. Moreover, the portion of the second support plate 251 that protrudes from the cylindrical shell can form a toothed support structure. Compared to directly placing the cylindrical shell itself on the inner wall of the shell 1, the toothed support structure increases the stability of the cylindrical shell, which to some extent also increases the stability of the heat exchanger 3 during transportation, thereby ensuring the consistency of air ducts between products.

[0096] In addition, from the position where the second support plate 251 intersects with the lower side wall of the cylindrical shell to the end of the second support plate 251 near the second opening 21, the distance between the lower edge of the second support plate 251 and the lower side wall of the cylindrical shell gradually increases. The gap between the lower edge of the second support plate 251 and the lower side wall of the cylindrical shell can guide the return air from the bottom position of the heat exchanger 3 into the inner cavity of the cylindrical shell, so that the airflow can fully contact the heat exchanger 3, increase the heat exchange area, and give full play to the heat exchange function of the heat exchanger 3.

[0097] like Figure 1 , 3 As shown in Figure 5, in some embodiments, a plurality of second support plates 251 are divided into two groups along the first direction x, and the two groups of second support plates 251 are inclined in opposite directions; and for the same group of second support plates 251, the first end of the second support plate 251 near the second opening 21 is closer to the end wall of the cylindrical shell on the same side than the second end near the second limiting part 23.

[0098] Of the two sets of second support plates 251, for the set of second support plates 251 located near the first end of the cylindrical shell in the first direction x, the end of the second support plate 251 near the second limiting portion 23 is inclined toward the first end of the cylindrical shell relative to the end away from the second limiting portion 23. For the set of second support plates 251 located near the second end of the cylindrical shell in the first direction x, the end of the second support plate 251 near the second limiting portion 23 is inclined toward the second end of the cylindrical shell relative to the end away from the second limiting portion 23. Multiple second support plates 251 within the same set can be arranged in parallel.

[0099] In this embodiment, when centrifugal fans are installed at both ends of the air duct assembly, the airflow that has been heated by the heat exchanger 3 can be guided by two sets of second support plates 251, and the airflow is divided into two paths. One path is guided to the centrifugal fan at the first end of the cylindrical shell, and the other path is guided to the centrifugal fan at the second end of the cylindrical shell. This allows the air duct assembly to discharge air at both ends of the cylindrical shell at the same time, increasing the air volume in a limited space and improving the air discharge efficiency.

[0100] In some embodiments, at least one end of the cylindrical housing along the first direction x is configured to be fixedly connected to the housing 1.

[0101] In this embodiment, a fixed connecting plate is provided at at least one end of the cylindrical shell, and a first mounting hole is provided on the fixed connecting plate. A second mounting hole is provided at a corresponding position on the inner wall of the shell 1. Fasteners (e.g., screws or bolts) can be installed through the first mounting hole and the second mounting hole to improve the stability of the cylindrical shell in the shell 1.

[0102] like Figure 4 As shown, in some embodiments, the cylindrical shell is recessed near the first limiting portion 22 to form a water collection tank 4.

[0103] For example, the water collection tank 4 may extend along the first direction x, more preferably extending along the entire length of the cylindrical shell along the first direction x. For example, the cross-section of the water collection tank 4 may be arc-shaped to better accommodate condensate.

[0104] As described above, the first limiting part 22 includes a limiting rib extending along the first direction x and folded outward. The limiting rib forms a baffle at the edge of the water collection tank 4, reducing the risk of liquid collected in the water collection tank 4 flowing out.

[0105] In this embodiment, a water collection tank 4 is provided near the first limiting part 22 on the cylindrical shell. The recessed area defined by the water collection tank 4 on the cylindrical shell can be used to arrange the connecting pipe. The connecting pipe allows the refrigerant to flow. The refrigerant is connected to the internal pipes of the heat exchanger through the connecting pipe, so that the refrigerant can circulate and enable the heat exchanger 3 to have a heat exchange function. Arranging the connecting pipe in this way can reduce the space occupied by the connecting pipe, which is conducive to reducing the overall volume of the air duct assembly. In addition, the water collection tank 4 can be used to collect the small amount of condensate formed on the connecting pipe and prevent the condensate from spreading to the back.

[0106] In some embodiments, the water collection tank 4 is an elongated groove extending along a first direction x. A groove A is provided near the water collection tank 4 on the cylindrical shell. The groove A communicates with the water collection tank 4 and is used to allow a connecting pipe arranged in the water collection tank 4 to pass through it and extend in a direction away from the second opening 21 in the second direction y. By providing the groove A, the connecting pipe extends within the water collection tank 4 and the groove A, which reduces the space occupied by the connecting pipe on the upper side of the cylindrical shell, thus reducing the overall volume of the air duct assembly.

[0107] like Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments, the side wall of the cylindrical shell away from the second opening 21 is provided with a recess 5, and the inner side wall of the shell 1 away from the first opening 11 is provided with a protrusion 6. The recess 5 and the protrusion 6 cooperate to perform positioning.

[0108] For example, the mating structure of the recessed portion 5 and the protruding portion 6 can extend along the entire length of the cylindrical shell in the first direction x, or multiple sets can be provided at intervals along the first direction x.

[0109] For example, the surfaces where the protrusion 6 and the recess 5 mate can be arc-shaped. The protrusion 6 includes a horizontal surface and a first mating surface. The first mating surface is located below the horizontal surface, and a sharp point is formed at the junction of the horizontal surface and the first mating surface. The first mating surface is recessed inward. The recess 5 includes a vertical surface and a second mating surface. The second mating surface is located below the vertical surface, and the vertical surface is further away from the rear wall of the housing 1 relative to the second mating surface. The second mating surface protrudes outward. The first and second mating surfaces mate with each other to position the water-receiving component 2 along the second direction y.

[0110] In this embodiment, when the water receiving component 2 is pushed into the housing 1, the interlocking of the protrusion 6 and the recess 5 quickly positions the water receiving component 2 in the correct position, improving installation efficiency. Simultaneously, it also enhances the stability of the water receiving component 2, reducing its tilting or circumferential deflection within the housing 1.

[0111] like Figure 5 and Figure 7As shown, in some embodiments, the air duct assembly further includes a centrifugal fan, which is disposed at the end of the outer side of the housing 1 along the first direction x. The end wall of the water receiving component 2 is provided with a collection port 26 communicating with the air inlet of the centrifugal fan. The edge of the collection port 26 is provided with an outwardly extending flange 8. The inner wall surface of the housing 1 opposite to the flange 8 is provided with an inclined support structure 9. The inclined support structure 9 supports and fits the flange 8 from the lower side to limit the heat exchanger 3 in the first direction x.

[0112] Specifically, the side wall of the shell 1 is provided with a through hole 12, which corresponds to the position of the collection port 26. The air inlet of the centrifugal fan communicates with the collection port 26 through the through hole 12. During the operation of the air duct assembly, return air enters the inner cavity of the cylindrical shell from the outside through the heat exchanger 3, and then flows to the centrifugal fan through the collection port 26, finally achieving air outlet.

[0113] In this embodiment, the inclined support structure 9 is set to match the slope of the contour surface of the flange 8. Under the action of the inclined support structure 9, the offset of the heat exchanger 3 along the first direction x during transportation can be reduced, the stability of the heat exchanger 3 can be improved, and the centrifugal fan casing can be squeezed and deformed or the shell 1 can be damaged by collision when the heat exchanger 3 is offset. This ensures the consistency of the air duct between products and guarantees the air delivery function of the centrifugal fan.

[0114] like Figure 5 As shown, in some embodiments, the duct assembly includes two centrifugal fans, which are respectively disposed at both ends of the housing 1 along the first direction x. Specifically, a centrifugal fan blade 7 is respectively disposed at each end of the housing 1 along the first direction x. The volute of the centrifugal fan is formed by an integrally wound shell. The portion of the integrally wound shell surrounding the centrifugal fan blade 7 has an opening, forming the air outlet of the centrifugal fan. The integrally wound shell covers the two centrifugal fan blades 7 respectively, and the rear sidewall of the housing 1 extends through the main body area of ​​the integrally wound shell in the second direction y, and is located on the rear side of the integrally wound shell. The end of the integrally wound shell extends circumferentially to the upper side of the housing 1. This structure facilitates the guidance of the gas discharged from the two centrifugal fans to the upper side of the housing 1, where air is discharged. Furthermore, it is advantageous to set the air outlet in a long strip shape to increase the air outlet area.

[0115] Some embodiments of this disclosure also provide an indoor air conditioning unit, including the air duct assembly described above.

[0116] Because the air duct assembly in this embodiment has a structure that limits and stabilizes the heat exchanger 3, the risk of the heat exchanger 3 moving unexpectedly during the use and transportation of the air conditioner indoor unit can be reduced. This reduces the collision and damage to the housing of the air duct assembly when the heat exchanger 3 moves unexpectedly, ensures the consistency of the air duct between products, makes the air conditioner indoor unit more reliable during use, ensures the air outlet performance of the air conditioner indoor unit, and thus improves the user experience of the air conditioner indoor unit.

[0117] Some embodiments of this disclosure also provide an air conditioning unit, including the air conditioning indoor unit as described above.

[0118] Because the heat exchanger 3 of the indoor unit of the air conditioner in this embodiment has strong stability during use and transportation, the reliability of the air conditioning unit can be improved, the air output performance of the air conditioning unit can be guaranteed, and the user experience of the air conditioning unit can be enhanced.

[0119] The duct assembly, indoor air conditioning unit, and air conditioning unit provided in this disclosure have been described in detail above. Specific embodiments have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications to this disclosure without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this disclosure.

Claims

1. A duct assembly, characterized in that, include: A housing (1), one side of which has a first opening (11) extending in a first direction (x); A water receiving component (2) is installed inside the housing (1) through the first opening (11). The water receiving component (2) includes a cylindrical housing, and a second opening (21) is provided on the side wall of the water receiving component (2) near the first opening (11). The heat exchanger (3) has an arc-shaped plate structure and is located at the second opening (21), and closes the second opening (21). The water receiving component (2) further includes a first limiting part (22) and a second limiting part (23) connected to the cylindrical shell. The first limiting part (22) and the second limiting part (23) are disposed near the second opening (21) and are configured to abut against the two ends of the heat exchanger (3) in the circumferential direction to limit the heat exchanger (3) from deflecting in the circumferential direction.

2. The air duct assembly according to claim 1, characterized in that, The first limiting part (22) is disposed at the upper edge of the second opening (21) in the circumferential direction, the second limiting part (23) is disposed at the bottom area of ​​the inner wall of the cylindrical shell, the first end of the heat exchanger (3) in the circumferential direction abuts against the first limiting part (22), and the second end of the heat exchanger (3) in the circumferential direction extends into the second opening (21) and abuts against the second limiting part (23).

3. The air duct assembly according to claim 2, characterized in that, The first limiting part (22) includes a limiting rib that extends along the first direction (x) and is folded outward.

4. The air duct assembly according to claim 2, characterized in that, The second limiting part (23) includes a limiting step extending along the first direction (x).

5. The air duct assembly according to claim 1, characterized in that, The water receiving component (2) also includes a support assembly connected to the cylindrical shell and configured to support the heat exchanger (3).

6. The air duct assembly according to claim 5, characterized in that, The support assembly includes a first support portion (24), which is disposed at the second opening (21) and fixedly connected to the first limiting portion (22). The first support portion (24) is configured to support the upper region of the inner side of the heat exchanger (3).

7. The air duct assembly according to claim 6, characterized in that, The first support portion (24) includes a connecting rod (241) and a plurality of first support plates (242). The connecting rod (241) extends along the first direction (x) and its two ends are respectively connected to the cylindrical shell. The plurality of first support plates (242) are spaced apart in the first direction (x). Each first support plate (242) is connected to the first limiting portion (22) and the connecting rod (241) at both ends along the circumferential direction.

8. The air duct assembly according to claim 7, characterized in that, The plurality of first support plates (242) are divided into two groups along the first direction (x), and the inclination directions of the two groups of first support plates (242) are opposite; and for the same group of first support plates (242), the first end of the first support plate (242) connected to the first limiting part (22) is closer to the end wall of the cylindrical shell on the same side relative to the second end connected to the connecting rod (241).

9. The air duct assembly according to claim 7, characterized in that, The first support plate (242) is adapted to the shape of the inner surface of the heat exchanger (3) and is at an angle. The first support plate (242) is used to guide the droplets formed on the upper surface of the heat exchanger (3) to flow into the inner cavity of the cylindrical shell.

10. The air duct assembly according to claim 5, characterized in that, The support assembly further includes a second support portion (25), which is fixedly connected to the cylindrical shell and is located in the circumferential direction on the side of the second limiting portion (23) near the second opening (21). The second support portion (25) is configured to support the lower region of the outer side of the heat exchanger (3).

11. The air duct assembly according to claim 10, characterized in that, The second support portion (25) includes a plurality of second support plates (251) which are spaced apart in the first direction (x).

12. The air duct assembly according to claim 11, characterized in that, The plurality of second support plates (251) are adapted to the shape of the outer surface of the heat exchanger (3) and are at an angle. The second support plates (251) are used to guide droplets formed on the outer surface of the lower region of the heat exchanger (3) to flow into the inner cavity of the cylindrical shell.

13. The air duct assembly according to claim 11, characterized in that, The second support plate (251) is an arc-shaped plate and extends circumferentially over the cylindrical shell. A portion of the second support plate (251) is located inside the cylindrical shell, and another portion of the second support plate (251) extends out of the cylindrical shell and abuts against the inner wall of the shell (1).

14. The air duct assembly according to claim 13, characterized in that, The plurality of second support plates (251) are divided into two groups along the first direction (x), and the two groups of second support plates (251) have opposite inclination directions; and for the same group of second support plates (251), the first end of the second support plate (251) near the second opening (21) is closer to the end wall of the cylindrical shell on the same side than the second end near the second limiting part (23).

15. The air duct assembly according to any one of claims 1 to 14, characterized in that, At least one end of the cylindrical shell along the first direction (x) is configured to be fixedly connected to the shell (1).

16. The air duct assembly according to any one of claims 1 to 14, characterized in that, The cylindrical shell is recessed near the first limiting part (22) to form a water collection tank (4).

17. The air duct assembly according to any one of claims 1 to 14, characterized in that, The cylindrical shell has a recess (5) on the side wall away from the second opening (21), and the shell (1) has a protrusion (6) on the inner side wall away from the first opening (11). The recess (5) and the protrusion (6) cooperate to be positioned.

18. The air duct assembly according to any one of claims 1 to 14, characterized in that, It also includes a centrifugal fan, which is disposed at the end of the outer shell (1) along the first direction (x). The end wall of the water receiving component (2) is provided with a collection port (26) communicating with the air inlet of the centrifugal fan. The edge of the collection port (26) is provided with an outwardly extending flange (8). The inner wall surface of the shell (1) opposite to the flange (8) is provided with an inclined support structure (9). The inclined support structure (9) supports and fits the flange (8) from the lower side to limit the heat exchanger (3) in the first direction (x).

19. An indoor unit for an air conditioner, characterized in that, Includes the air duct assembly as described in any one of claims 1 to 18.

20. An air conditioning unit, characterized in that, Includes the air conditioner indoor unit as described in claim 19.

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