Air pipe type air conditioner

Abstract

The utility model provides an air pipe type air conditioner, and relates to the technical field of household appliances. The air pipe type air conditioner comprises a shell provided with an air return opening; the volute assembly is located in the shell and comprises a first volute and a second volute, the first volute is provided with a first connecting part, the second volute is provided with a second connecting part, the first connecting part and the second connecting part are matched and fixed to form a matching part, and the matching part is perpendicular to the plane where the air return opening is located so that the matching part can be disassembled through the air return opening. According to the air pipe type air conditioner, the matching part formed by matching the first connecting part of the first volute and the second connecting part of the second volute is perpendicular to the plane where the air return opening is located, and the second connecting part can be pushed and pulled in the direction perpendicular to the plane where the air return opening is located; therefore, the second volute is installed in the shell or separated out of the shell through the air return opening, the structure is simple, operation is convenient, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to a ducted air conditioner. Background Technology

[0002] A ducted air conditioner is an air conditioning device that distributes cool or warm air to various rooms through a duct system. Compared to wall-mounted and floor-standing air conditioners that are exposed to the outside, ducted air conditioners are usually installed in the ceiling, offering high concealment and an aesthetically pleasing appearance, making them increasingly popular among users.

[0003] The volute is one of the main components of a ducted air conditioner, playing a crucial role in airflow guidance, dynamic pressure to static pressure conversion, noise reduction, energy efficiency improvement, and optimized airflow path. In related technologies, the volute typically consists of two connected sub-volutes, with the sub-volute near the air outlet secured by a partition. Because ducted air conditioners are installed enclosed within the indoor ceiling, after-sales maintenance of the volute and motor in existing ducted air conditioners is limited by the installation location. The existing connected sub-volutes are difficult to disassemble and reassemble, and have significant limitations, making it difficult to adapt to all installation environments and customer requirements. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a ducted air conditioner.

[0005] The technical solution adopted in this application to solve the above-mentioned technical problems is as follows:

[0006] In a first aspect, this application provides a ducted air conditioner, comprising:

[0007] The casing is equipped with a return air vent; and

[0008] The volute assembly is located inside the housing. The volute assembly includes a first volute and a second volute. The first volute is provided with a first connecting part, and the second volute is provided with a second connecting part. The first connecting part and the second connecting part are fixed together to form a mating part. The mating part is perpendicular to the plane where the return air vent is located, so that the mating part can be disassembled through the return air vent.

[0009] Optionally, in some embodiments of this application, one of the first connecting part and the second connecting part is a buckle and the other is a slot; the buckle and the slot are connected or separated along a direction perpendicular to the plane where the return air vent is located.

[0010] Optionally, in some embodiments of this application, the first volute is provided with a first contact surface on the side near the second volute, and a first guide rail is provided on the first contact surface; and / or, the buckle is provided with a second guide rail on the side near the slot.

[0011] Optionally, in some embodiments of this application, the first volute and the second volute are connected to define a centrifuge cavity; wherein, the second volute has a second mating surface on the side near the first volute, the second connecting portion is located at the end of the second mating surface, and the side of the second mating surface away from the centrifuge cavity has a reinforcing rib.

[0012] Optionally, in some embodiments of this application, a first volute and a second volute are connected to define a centrifugal cavity, and a fan is provided inside the centrifugal cavity; a first protrusion is provided on the side of the first volute near the second volute, and a second protrusion is provided on the side of the second volute near the first volute, and the first protrusion and the second protrusion are used to cooperate with the fan.

[0013] Optionally, in some embodiments of this application, the duct air conditioner further includes a partition plate located inside the housing and dividing the housing into a first cavity and a second cavity, the second cavity being close to the return air inlet; the volute assembly is located inside the second cavity, and a support plate is provided on the side of the first volute away from the second volute, the support plate being connected to the partition plate.

[0014] Optionally, in some embodiments of this application, one of the support plate and the partition plate is provided with a positioning post, and the other is provided with a positioning groove, with the positioning post and the positioning groove engaging in a limiting fit; and / or, the support plate is provided with a first connecting hole, the partition plate is provided with a second connecting hole, and the duct-type air conditioner further includes a connector, which connects to the first connecting hole and the second connecting hole.

[0015] Optionally, in some embodiments of this application, a first fixing structure is provided on the end side of the first volute; and / or, a second fixing structure is provided on the side of the support plate near the first volute.

[0016] Optionally, in some embodiments of this application, the support plate is provided with an air outlet extension section on the side near the first cavity.

[0017] Optionally, in some embodiments of this application, the second cavity is further provided with a motor bracket connected to the partition plate and a motor fixed to the motor bracket.

[0018] In summary, due to the adoption of the above technical solution, this application includes at least the following beneficial effects:

[0019] The ducted air conditioner provided in this application embodiment connects the first connecting part of the first volute and the second connecting part of the second volute along a direction perpendicular to the plane where the return air inlet is located. When installing or disassembling the second volute, the second connecting part can be directly pushed and pulled along the plane perpendicular to the return air inlet, without the need for cumbersome disassembly of other parts. This simplifies operation, improves disassembly and assembly efficiency and convenience, and thus improves the efficiency of replacing and maintaining components such as the volute, impeller, and motor. Furthermore, this solution utilizes the existing return air inlet structure of the ducted air conditioner, allowing the second volute to be installed inside or removed from the housing through the return air inlet by pushing and pulling, eliminating the need for a separate maintenance port, reducing production costs, maintaining the neat and consistent appearance of the ducted air conditioner, making it suitable for various installation environments, with a simple structure and higher reliability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application and are not intended to limit this application, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of the ducted air conditioner provided in this application when it is installed in a suspended ceiling;

[0022] Figure 2 This is a schematic diagram of the structure of a duct-type air conditioner provided in an embodiment of this application;

[0023] Figure 3 A schematic diagram of the mating structure of the first and second volutes provided in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the structure of the first volute provided in an embodiment of this application;

[0025] Figure 5 for Figure 4 Enlarged view of section I;

[0026] Figure 6 Another structural schematic diagram of the first volute provided in the embodiments of this application;

[0027] Figure 7 This is a schematic diagram of the structure of the second volute provided in an embodiment of this application;

[0028] Figure 8 for Figure 7 Enlarged view of section II;

[0029] Figure 9 This is a schematic diagram of the mating structure of the volute assembly and the partition plate provided in the embodiments of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100-Ductless air conditioner;

[0032] 10-Shell; 11-Air outlet; 12-Air return outlet; 13-First cavity; 14-Second cavity;

[0033] 20-Volume assembly; 201-Mating part; 21-First volume; 211-First connecting part; 212-First mating surface; 2121-First guide rail; 213-First protrusion; 214-First wire fixing structure; 22-Second volume; 221-Second connecting part; 2211-Second guide rail; 222-Second mating surface; 2221-Reinforcing rib; 223-Second protrusion; 23-Support plate; 231-Positioning post; 232-First connecting hole; 233-Second wire fixing structure; 234-Air outlet extension section; 24-Centrifugal chamber;

[0034] 30 - Middle partition; 31 - Motor bracket; 32 - Motor;

[0035] 200- Ceiling. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and comprehensively described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a unique orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as exemplary in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles disclosed in this application.

[0039] To facilitate understanding of the present application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: spline curves without arrows indicate solid parts, that is, parts with solid structures; spline curves with arrows indicate virtual parts, that is, parts without solid structures.

[0040] In related technologies, ducted air conditioners are generally installed in wall cavities. Due to varying home renovations, the installation environment for ducted air conditioners is very limited, with some areas lacking sufficient space to allow for the removal of the volute casing. Typically, a service port is located on the ducted air conditioner, through which the volute casing is disassembled. However, accessing the service port also requires removing components such as the filter and base plate, making the operation complex and inefficient.

[0041] Please see Figure 1 and Figure 2 This application provides a duct-type air conditioner 100.

[0042] The ducted air conditioner 100 includes a housing 10. The housing 10 has an air outlet 11 and a return air outlet 12, with the plane of the air outlet 11 being parallel to the plane of the return air outlet 12. The housing 10 defines a receiving cavity.

[0043] The ducted air conditioner 100 also includes a volute assembly 20. The volute assembly 20 is located inside the housing 10, specifically within the receiving cavity, and is positioned near the return air inlet 12. The volute assembly 20 includes a first volute 21 and a second volute 22. The first volute 21 has a first connecting portion 211, and the second volute 22 has a second connecting portion 221. The first connecting portion 211 and the second connecting portion 221 are fitted together to form a mating portion 201. The mating portion 201 is perpendicular to the plane of the return air inlet 12, allowing the mating portion 201 to be disassembled through the return air inlet 12.

[0044] It is understandable that during the operation of the ducted air conditioner 100, indoor air is drawn into the receiving cavity of the casing 10 through the return air inlet 12. The drawn-in air enters the heat exchanger area, where it exchanges heat with the low-temperature, low-pressure refrigerant, thereby achieving a cooling or heating effect. After being processed by the heat exchanger, the air enters the volute assembly 20, which gathers the airflow leaving the heat exchanger and guides it to the air outlet 11, from which it is blown into the room. The volute assembly 20 helps to reduce airflow loss, improve air delivery efficiency, and ensure smooth airflow. The volute assembly 20 contains a fan, and a motor 32 is located near the volute assembly 20. When the volute, fan, motor 32, or other components malfunction and require replacement or repair, it is necessary to first remove part of the volute to expose the corresponding repair space for easier maintenance.

[0045] It should be noted that, since the ducted air conditioner 100 is installed within the ceiling 200, after the ducted air conditioner 100 provided in this application is installed in the ceiling 200, the planes where the air outlet 11 and the return air outlet 12 are located are both vertical planes, and the direction perpendicular to the plane where the return air outlet 12 is located is also the horizontal direction. It should be further noted that the vertical height of the return air outlet 12 is greater than the vertical height of the second volute 22, facilitating the smooth installation of the second volute 22 within the housing 10 or its removal from the housing 10 via the return air outlet 12. After the mating part 201 is disassembled through the return air outlet 12, the first connecting part 211 and the second connecting part 221 separate along a direction perpendicular to the plane where the return air outlet 12 is located, realizing the disassembly of the second volute 22 and the first volute 21. Similarly, when the first connecting part 211 and the second connecting part 221 approach and fix together along a direction perpendicular to the plane where the return air outlet 12 is located to form the mating part 201, the assembly of the second volute 22 and the first volute 21 is realized.

[0046] The ducted air conditioner 100 provided in this application embodiment has a mating part 201 formed by the cooperation of the first connecting part 211 of the first volute 21 and the second connecting part 221 of the second volute 22 perpendicular to the plane where the return air inlet 12 is located. When installing or disassembling the second volute 22, the second connecting part 221 can be pushed and pulled directly along the plane perpendicular to the return air inlet 12 to disassemble the mating part 201 without the need for cumbersome disassembly of other parts. The operation is simple and can improve the efficiency and convenience of disassembly and assembly, thereby improving the efficiency of replacement and maintenance of components such as volute, impeller, and motor 32. Moreover, this solution utilizes the existing return air inlet 12 structure of the ducted air conditioner 100. The second volute 22 can be installed inside the housing 10 or removed from the housing 10 by pushing and pulling through the return air inlet 12. There is no need to open a separate maintenance port, which reduces production costs and maintains the neat and consistent appearance of the ducted air conditioner 100. It is suitable for various installation environments, has a simple structure, and is more reliable.

[0047] In some embodiments of this application, one of the first connecting part 211 and the second connecting part 221 is a snap fastener and the other is a slot.

[0048] Please see Figure 3 This solution uses the first connecting part 211 as a slot and the second connecting part 221 as a buckle as an example. The buckle and the slot are connected or separated along a direction perpendicular to the plane where the return air vent 12 is located, realizing the installation or removal of the second volute 22 and the first volute 21. It should be noted that the buckle is an elastic buckle. When the elastic buckle is not compressed, its width is greater than the width of the slot. When the elastic buckle passes through the slot, it is squeezed by the side wall of the slot. After compression, the width of the elastic buckle is less than the width of the slot, allowing it to pass through the slot. After the elastic buckle has completely passed through the slot, it recovers its deformation. After rebounding, the width of the elastic buckle is greater than the width of the slot, and it is stuck in the slot and is not easy to fall off.

[0049] Please see Figure 7 and Figure 8 In some embodiments of this application, a second guide rail 2211 is provided on the side of the buckle near the card slot. The second guide rail 2211 facilitates the buckle to enter the card slot along the side wall of the card slot, making it easier for the buckle to engage with the card slot.

[0050] In some embodiments of this application, the second volute 22 is disposed near the return air inlet 12, and the first volute 21 is located on the side of the second volute 22 away from the return air inlet 12.

[0051] It is understood that after the first volute 21 and the second volute 22 are connected by the first connecting part 211 and the second connecting part 221, they define the centrifugal cavity 24. The centrifugal cavity 24 is equipped with a fan and other structures to guide the air processed by the heat exchanger to the air outlet 11. Therefore, both the first volute 21 and the second volute 22 have two ends connected. In other words, the connecting parts at the ends of the first volute 21 and the second volute 22 are fixed together to form at least two mating parts 201. Furthermore, the line connecting the two mating parts 201 at the two ends intersects the direction in which the first connecting part 211 and the second connecting part 221 are connected (i.e., the direction perpendicular to the plane where the return air outlet 12 is located). This facilitates the direct pulling out of the second volute 22 along the direction close to the return air outlet 12 after the second connecting part 221 is disengaged from the first connecting part 211, avoiding obstruction from other components.

[0052] In some embodiments of this application, the first volute 21 and the second volute 22 are both semi-circular structures without end faces (three-dimensional structures obtained by cutting a cylinder along a direction perpendicular to the upper and lower bottom surfaces). In order to improve the connection stability of the first volute 21 and the second volute 22, connecting parts can be provided at the four corners of the side of the semi-circular body to fix the first volute 21 and the second volute 22 from multiple directions and improve the connection reliability.

[0053] In some embodiments of this application, please refer to Figure 4 , Figure 5 and Figure 6 The first volute 21 has a first mating surface 212 on the side near the second volute 22, and a first guide rail 2121 is provided on the first mating surface 212. The first mating surface 212 are the two end faces of the first volute 21 used for connecting with the second volute 22. The first guide rail 2121 on the first mating surface 212 is beneficial for positioning and guiding when the second volute 22 is connected, and facilitates the connection between the second connecting part 221 and the first connecting part 211.

[0054] Please refer again to some embodiments of this application. Figure 3 and Figure 7 The second volute 22 has a second mating surface 222 on the side near the first volute 21, and a second connecting portion 221 is located on the end side of the second mating surface 222. A reinforcing rib 2221 is provided on the side of the second mating surface 222 away from the centrifugal cavity 24. It can be understood that the second mating surface 222 are the two end faces of the second volute 22 used to connect with the first volute 21. After the first connecting portion 211 and the second connecting portion 221 are connected, the second mating surface 222 and the first mating surface 212 abut against each other. The reinforcing rib 2221 on the outer side of the second mating surface 222 provides support for the abutment of the first mating surface 212 and the second mating surface 222, further improving the connection stability of the first volute 21 and the second volute 22.

[0055] Please refer again to some embodiments of this application. Figure 4 and Figure 7 The first volute 21 has a first protrusion 213 on the side near the second volute 22 at its end, and the second volute 22 has a second protrusion 223 on the side near the first volute 21 at its end. The first protrusion 213 and the second protrusion 223 are used to mate with the impeller. It should be noted that the first protrusion 213 is an arc-shaped structure extending along the sidewall of the first volute 21 and is recessed inwards towards the centrifugal cavity 24. Similarly, the second protrusion 223 is an arc-shaped structure extending along the sidewall of the second volute 22 and is recessed inwards towards the centrifugal cavity 24. When the first connecting portion 211 and the second connecting portion 221 are connected, the two ends of the first protrusion 213 abut against the two ends of the second protrusion 223, respectively. The first protrusion 213 and the second protrusion 223 mate with the impeller, specifically with the edge of the impeller, which increases the assembly clearance of the impeller within the centrifugal cavity 24 and improves the airflow, enhancing the user experience.

[0056] In some embodiments of this application, please refer to Figure 1 and Figure 9The ducted air conditioner 100 also includes a partition 30, which is located within the housing 10 and divides the housing 10 into a first cavity 13 and a second cavity 14. Specifically, the partition 30 is located within a receiving cavity and divides the receiving cavity into a first cavity 13 and a second cavity 14. The first cavity 13 is near the air outlet 11, and the second cavity 14 is near the return air outlet 12. A volute assembly 20 is located within the second cavity 14 and connected to the partition 30. The second cavity 14 is used to perform heat exchange treatment on the air drawn in from the return air outlet 12, and the heat-treated air is guided to the first cavity 13 through the volute assembly 20. When the air flows inside the volute assembly 20, turbulence and eddies are generated. To reduce noise pollution, the volute assembly 20 is fixed to the partition 30 to prevent the volute assembly 20 from being affected by turbulence and eddies and swaying within the receiving cavity, thus preventing noise.

[0057] Furthermore, please refer again. Figure 4 The first volute 21 in the volute assembly 20 is connected to the middle partition 30. Specifically, a support plate 23 is provided on the side of the first volute 21 away from the second volute 22, and the support plate 23 is connected to the middle partition 30.

[0058] In some embodiments of this application, the support plate 23 is provided with a first connecting hole 232, the partition plate 30 is provided with a second connecting hole, and the duct air conditioner 100 also includes a connector that connects the first connecting hole 232 and the second connecting hole.

[0059] Please refer again to some embodiments of this application. Figure 6 One of the support plate 23 and the middle partition plate 30 is provided with a positioning post 231, and the other is provided with a positioning groove. The positioning post 231 and the positioning groove are matched for limiting.

[0060] This solution is illustrated using an example where a positioning post 231 is provided on the support plate 23 and a positioning groove is provided on the partition plate 30. The positioning post 231 is located on the side of the support plate 23 closest to the partition plate 30 and extends in the direction closest to the partition plate 30. Both the first connecting hole 232 and the second connecting hole are screw holes, and the connecting element is a screw. When the support plate 23 is installed on the partition plate 30, it can be positioned using the positioning post 231. After the positioning post 231 is aligned with the positioning groove, the first connecting hole 232 and the second connecting hole are aligned. The screw is then screwed into the aligned screw hole, thereby achieving a fixed connection between the support plate 23 and the partition plate 30.

[0061] It should be noted that the first volute 21 and the support plate 23 can be integrally formed. When the support plate 23 is fixed to the middle partition 30, the first volute 21 and the middle partition 30 are also fixedly connected.

[0062] Please refer again to some embodiments of this application. Figure 6 The first volute 21 has a first wire-fixing structure 214 on its end side.

[0063] In some embodiments of this application, the support plate 23 is provided with a second wire fixing structure 233 on the side near the first volute 21.

[0064] It is understood that the operation of the volute assembly 20 requires power from the motor 32. The first wire fixing structure 214 and the second wire fixing structure 233 can guide and fix the wiring of the motor 32, preventing wiring chaos and potential safety accidents. Both the first wire fixing structure 214 and the second wire fixing structure 233 can be wire clips. The first wire fixing structure 214 can be one wire clip at each end of the first volute 21. The second wire fixing structure 233 can be a row of wire clips, allowing multiple wire harnesses to be routed and fixed. The wire harnesses within the receiving cavity can be arranged according to actual needs, and can be routed through the first wire fixing structure 214 or the second wire fixing structure 233, which helps optimize the wiring of the wire harnesses.

[0065] In some embodiments of this application, the support plate 23 is provided with an air outlet extension section 234 on the side near the first cavity 13. After being processed by the volute assembly 20, the airflow enters the first cavity 13 through the through holes on the first volute 21 and the support plate 23, and is then blown out from the air outlet 11. The air outlet extension section 234 extends the length of the air outlet through hole on the support plate 23, limiting and guiding the airflow, stabilizing the airflow, increasing the air volume, and improving the air outlet efficiency.

[0066] In some embodiments of this application, the second cavity 14 is further provided with a motor bracket 31 connected to the partition plate 30, and a motor 32 fixed on the motor bracket 31. It is understood that multiple sets of volute assemblies 20 are usually arranged in the cavity, and the motor 32 can provide power for the operation of the volute assemblies 20. The motor bracket 31 and the motor 32 can be located between two adjacent sets of volute assemblies 20, which facilitates providing power to multiple sets of volute assemblies 20 and also facilitates the wiring and fixing of the motor 32.

[0067] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0068] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

Claims

1. A ducted air conditioner, characterized in that, include: The casing is equipped with a return air vent; as well as A volute assembly is located inside the housing. The volute assembly includes a first volute and a second volute. The first volute is provided with a first connecting portion, and the second volute is provided with a second connecting portion. The first connecting portion and the second connecting portion are fitted together to form a mating portion. The mating portion is perpendicular to the plane where the return air vent is located, so that the mating portion can be disassembled through the return air vent.

2. The ducted air conditioner according to claim 1, characterized in that, One of the first connecting part and the second connecting part is a buckle, and the other is a slot; the buckle and the slot are connected or separated along a direction perpendicular to the plane where the return air vent is located.

3. The ducted air conditioner according to claim 2, characterized in that, The first volute has a first contact surface on the side near the second volute, and a first guide rail is provided on the first contact surface; and / or, the buckle has a second guide rail on the side near the slot.

4. The ducted air conditioner according to claim 1, characterized in that, The first volute and the second volute are connected to define a centrifuge cavity; wherein, the second volute has a second mating surface on the side near the first volute, the second connecting part is located at the end of the second mating surface, and the side of the second mating surface away from the centrifuge cavity has a reinforcing rib.

5. The ducted air conditioner according to claim 1, characterized in that, The first volute and the second volute are connected to define a centrifugal chamber, and a fan is provided in the centrifugal chamber; a first protrusion is provided on the end of the first volute near the side of the second volute, and a second protrusion is provided on the end of the second volute near the side of the first volute, and the first protrusion and the second protrusion are used to cooperate with the fan.

6. The ducted air conditioner according to claim 1, characterized in that, The duct-type air conditioner also includes a partition plate, which is located inside the housing and divides the housing into a first cavity and a second cavity, the second cavity being close to the return air inlet; the volute assembly is located inside the second cavity, and a support plate is provided on the side of the first volute away from the second volute, the support plate being connected to the partition plate.

7. The ducted air conditioner according to claim 6, characterized in that, One of the support plate and the partition plate is provided with a positioning post, and the other is provided with a positioning groove, wherein the positioning post and the positioning groove are mutually limiting; and / or, the support plate is provided with a first connecting hole, the partition plate is provided with a second connecting hole, and the duct air conditioner further includes a connector, wherein the connector connects the first connecting hole and the second connecting hole.

8. The ducted air conditioner according to claim 6, characterized in that, The first volute has a first wire-fixing structure on its end side; and / or, the support plate has a second wire-fixing structure on the side near the first volute.

9. The ducted air conditioner according to claim 6, characterized in that, The support plate has an air outlet extension section on the side near the first cavity.

10. The ducted air conditioner according to claim 6, characterized in that, The second cavity is also provided with a motor bracket connected to the partition plate and a motor fixed to the motor bracket.

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