Adapter, duct installation assembly and mobile air conditioner

Abstract

The present invention discloses a conversion joint, and discloses an air duct installation assembly and a mobile air conditioner having the conversion joint, wherein the conversion joint includes a tube body, a first connection part and a second connection part, and an air passage is provided through the tube body; the first connection part is provided at one end of the tube body, and a first air outlet connected to the air passage is formed, and the second connection part is provided at the other end of the tube body, and a second air outlet connected to the air passage is formed, wherein, along the extension direction of the tube body, the first air outlet is projected on a reference surface to form a first projection, and the second air outlet is projected on the reference surface to form a second projection, the first projection and the second projection are partially overlapped, and the reference surface is coplanar with the first air outlet or the second air outlet. The two ends of the conversion joint are respectively connected between the air duct and the sealing plate, or between the joint part and the air duct, so that the air duct can be connected to the sealing plate after the installation angle is converted, which is convenient for installation.

Description

Technical Field

[0001] The invention relates to the field of air conditioning equipment, and in particular to a conversion joint, an air duct installation component and a mobile air conditioner. Background Art

[0002] When installing a mobile air conditioner, the air outlet duct and the air inlet duct need to be extended out of the window. For sliding windows, the existing installation method is generally to first install a sealing plate on the window, open a connecting hole on the sealing plate, and finally insert the air duct of the mobile air conditioner into the connecting hole and fix the air duct. According to the different sliding directions of the sliding window, the sealing plate can be installed at different angles so that the sealing plate cooperates with the sliding window to achieve a sealing effect.

[0003] The cross-section of the connecting end of some air ducts is set to a shape with different inner diameters such as an oval or an ellipse. The connecting hole on the sealing plate needs to match the shape of the air duct, and the sliding direction of the sliding window is not constant. The installation angle of the sealing plate needs to be changed according to the sliding direction of the sliding window. After the installation angle of the sealing plate is changed, the connecting end of the air duct cannot be installed to match the connecting hole. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a conversion joint that can facilitate the installation of an air duct on a sealing plate.

[0005] The present invention also provides an air duct installation assembly and a mobile air conditioner having the conversion joint.

[0006] A conversion joint according to a first aspect of the present invention includes:

[0007] A tube body, wherein an air passage is provided through the tube body;

[0008] A first connecting portion, the first connecting portion is arranged at one end of the tube body and is formed with a first air outlet communicating with the air passage;

[0009] A second connecting portion, the second connecting portion is arranged at the other end of the tube body and is formed with a second air outlet communicating with the air passage;

[0010] Among them, along the extension direction of the tube body, the first air outlet is projected onto a reference surface to form a first projection, the second air outlet is projected onto the reference surface to form a second projection, the first projection partially overlaps with the second projection, and the reference surface is coplanar with the first air outlet or the second air outlet.

[0011] The conversion joint according to the embodiment of the present invention has at least the following beneficial effects: the two ends of the conversion joint are respectively connected between the air duct and the sealing plate, or connected between the joint part and the air duct, so that the air duct is connected to the sealing plate after the installation angle is converted, which is convenient for installation.

[0012] According to some embodiments of the present invention, the shape of the first air outlet is consistent with the shape of the second air outlet, and the plane where the first air outlet is located is parallel to the plane where the second air outlet is located.

[0013] According to some embodiments of the present invention, the first projection completely overlaps with the second projection after being rotated 90° in a clockwise or counterclockwise direction around the geometric center of the first projection.

[0014] According to some embodiments of the present invention, a partition is provided in the tube body, and the partition divides the air passage into a first air duct and a second air duct, and the first air duct and the second air duct are independent of each other.

[0015] According to some embodiments of the present invention, the partition includes a connecting pipe, which is connected to the tube body and arranged in the air passage, the first air duct is constructed between the tube body and the connecting pipe, and the second air duct is arranged in the connecting pipe.

[0016] According to some embodiments of the present invention, the conversion joint includes a first connecting member and a second connecting member, and the first connecting member and the second connecting member are fixedly connected to form the conversion joint and construct the air passage.

[0017] According to a second aspect of the present invention, an air duct installation assembly includes:

[0018] Air duct;

[0019] A sealing plate, wherein the sealing plate is provided with a connecting hole;

[0020] A conversion joint according to an embodiment of the first aspect of the present invention;

[0021] The air duct can be detachably connected to the first connection part or the sealing plate, and the second connection part can be detachably connected to the sealing plate, so that the air duct is directly connected to the connecting hole, or the air duct is connected to the connecting hole through the conversion joint.

[0022] The air duct installation assembly according to the embodiment of the present invention has at least the following beneficial effects: the two ends of the conversion joint are respectively connected between the air duct and the sealing plate, or connected between the joint part and the air duct, so that the air duct is connected to the sealing plate after the installation angle is converted, which is convenient for installation.

[0023] According to some embodiments of the present invention, the air duct includes an inner tube and an outer tube detachably connected to the first connecting portion, and the conversion joint is further provided with a connecting tube located in the air passage, and the connecting tube is detachably connected to the inner tube.

[0024] The mobile air conditioner according to the third aspect of the present invention is characterized by comprising:

[0025] Air duct;

[0026] A conversion joint according to an embodiment of the first aspect of the present invention;

[0027] Wherein, the first connecting portion is detachably connected to the air duct.

[0028] The mobile air conditioner according to the embodiment of the present invention has at least the following beneficial effects: the two ends of the conversion joint are respectively connected between the air duct and the sealing plate, so that the air duct is connected to the sealing plate after the installation angle is converted, which is convenient for installation.

[0029] According to some embodiments of the present invention, the mobile air conditioner is provided with a joint portion, and the joint portion can be detachably connected to the air duct or the second connecting portion, so that the air duct is directly connected to the joint portion, or is connected to the joint portion through the conversion joint.

[0030] According to some embodiments of the present invention, the mobile air conditioner also includes a sealing plate, which is provided with a connecting hole. The sealing plate can be detachably connected to the air duct or the second connecting part so that the air duct is directly connected to the connecting hole, or the air duct is connected to the connecting hole through the conversion joint.

[0031] According to some embodiments of the present invention, the air duct includes an inner tube and an outer tube detachably connected to the first connecting portion, and the conversion joint is further provided with a connecting tube located in the air passage, and the connecting tube is detachably connected to the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0033] Figure 1 A schematic diagram of a mobile air conditioner according to an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of a mobile air conditioner according to another embodiment of the present invention;

[0035] Figure 3 for Figure 1 A cross-sectional view of

[0036] Figure 4 An exploded view of an air duct installation assembly according to another embodiment of the present invention;

[0037] Figure 5 is a schematic diagram of an air duct installation assembly according to another embodiment of the present invention;

[0038] Figure 6It is a schematic diagram of the installation of the air duct and the conversion joint in the embodiment of the present invention;

[0039] Figure 7 is a schematic diagram of a conversion joint in an embodiment of the present invention;

[0040] Figure 8 It is an exploded view of the conversion joint in the embodiment of the present invention.

[0041] Reference numerals

[0042] Conversion joint 100, first connection part 110, second connection part 120, tube body 130, connecting pipe 131, air passage 140, first air duct 141, second air duct 142, first connecting member 151, second connecting member 152, air duct 200, outer tube 210, inner tube 220, first air duct 231, second air duct 232, mobile air conditioner 300, joint part 310, sealing plate 400, connecting hole 410. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0046] The mobile air conditioner 300 of the present invention is described in detail with reference to Figure 1 and Figure 3 , including a conversion joint 100, the two ends of the conversion joint 100 are respectively connected between the air duct 200 and the sealing plate 400, or respectively connected between the joint part 310 and the air duct 200, referring to Figure 6The conversion joint 100 includes a tube body 130, a first connecting portion 110 and a second connecting portion 120. The first connecting portion 110 is arranged at one end of the tube body 130 and forms a first air outlet connected to the air passage 140; the second connecting portion 120 is arranged at the other end of the tube body 130 and forms a second air outlet connected to the air passage 140; wherein, along the extension direction of the tube body 130, the first air outlet is projected on the reference surface to form a first projection, and the second air outlet is projected on the reference surface to form a second projection, the first projection partially overlaps with the second projection, and the reference surface is coplanar with the first air outlet or the second air outlet.

[0047] Taking the plane where the first air outlet is located as the reference plane, the first air outlet forms a first projection on the reference plane, and the second air outlet forms a second projection on the reference plane along the extension direction of the tube body 130. Specifically, the second air outlet forms a second projection on the reference plane that is consistent with the shape of the second air outlet in a scanning manner, with the extension direction of the tube body 130 as the scanning path, wherein the extension direction of the tube body 130 can be a curve, a straight line or a multi-segment line.

[0048] It should be noted that the partial overlap between the first projection and the second projection means:

[0049] In some embodiments, the sizes and shapes of the first projection and the second projection tend to be consistent, and a portion of the first projection overlaps a portion of the second projection.

[0050] In other embodiments, the sizes of the first projection and the second projection are inconsistent, and the first projection is contained in the second projection, or the second projection is contained in the first projection. In this case, if the length direction of the first projection and the length direction of the second projection form an angle with each other, it should be within the scope of the present invention. If the length direction of the first projection and the length direction of the second projection tend to be parallel or collinear, it is not within the scope of the present invention. Specifically, if the first projection and the second projection are both ellipses, the length direction of the first projection and the length direction of the second projection are the directions pointed by the long axis of the corresponding ellipses, respectively, wherein if the long axis of the first projection and the long axis of the second projection form an angle, then the implementation is within the scope of the present invention. If the long axis of the first projection and the long axis of the second projection are collinear or parallel, then the implementation is not within the scope of the present invention.

[0051] When the plane where the first air outlet is located forms an angle with the plane where the second air outlet is located, the extension direction of the tube body 130 should be a curve; when the plane where the first air outlet is located is parallel to the plane where the second air outlet is located, the extension direction of the tube body 130 should be a straight line.

[0052] Reference Figure 1 and Figure 3, by connecting the conversion joint 100 to the air duct 200, the angle of one end of the air duct 200 connected to the joint part 310 or the sealing plate 400 is converted, and the sealing plate 400 after the conversion angle is matched, which is convenient for installation. Specifically, since the air duct 200 and the sealing plate 400 can be directly connected, the shapes of the connecting holes 410 of the air duct 200 and the sealing plate 400 match, and the shapes of the first air outlet and the second air outlet match, so the shapes of the first projection and the second projection match. Since the shapes of the first projection and the second projection are consistent, if the line between point A and point B determined in the first projection is taken as the first characteristic line, the second projection also has a second characteristic line consistent with the position and length characteristics of the first characteristic line. In the staggered first projection and the second projection, there is an angle between the first characteristic line of the first projection and the second characteristic line of the second projection, and the angle should be adaptively adjusted according to the angle required to be converted by the sealing plate 400 in practice. Specifically, in some embodiments, the shapes of the first projection and the second projection are ellipses, and the major axis or the minor axis in the ellipse can be regarded as the above-mentioned first characteristic line or the second characteristic line.

[0053] In common cases, sliding windows are generally pushed horizontally left and right or up and down. Therefore, in some embodiments of the conversion joint 100, the first characteristic line of the first projection and the second characteristic line of the second projection are arranged to be perpendicular to each other, so that the air duct 200 can be installed on the sliding window that is pushed horizontally left and right or up and down by using the conversion joint 100.

[0054] In this embodiment, since the first projection or the second projection is formed along the extension direction of the tube body 130, the geometric center of the first projection should coincide with the geometric center of the second projection. The first projection completely coincides with the second projection after rotating 90° clockwise or counterclockwise around its geometric center, that is, the first air outlet is twisted 90° relative to the second air outlet, which makes it easy to install the air duct 200 on a sliding window that pushes left and right or up and down by using the conversion joint 100.

[0055] In some embodiments, the second connection portion 120 is connected to the joint portion 310. In order to facilitate the connection between the first connection portion 110 and the air duct 200, an angle is formed between the plane where the first air outlet is located and the plane where the second air outlet is located. Specifically, an angle is formed between the first connection portion 110 and the second connection portion 120. Then, the first connection portion 110 is inclined relative to the joint portion 310, which is convenient for installation with the air duct 200.

[0056] It should be mentioned that the extension direction of the tube body 130 can be a straight line or a curve, and the starting point and end point of the extension direction are the center points of the first air outlet and the second air outlet, respectively. In some embodiments, the first connecting portion 110 and the second connecting portion 120 are arranged in parallel, and the extension direction of the tube body 130 is a straight line.

[0057] Reference Figure 1 and Figure 3 In some embodiments of the mobile air conditioner 300, the air duct 200 and the conversion joint 100 are included. The mobile air conditioner 300 includes a joint part 310. The air duct 200 is detachably connected to the first connection part 110, and the joint part 310 is detachably connected to the second connection part 120, wherein the joint part 310 is detachably connected to the air duct 200.

[0058] In some embodiments, reference Figure 2 , the sealing plate 400 is installed on the sliding window along the first direction, and the two ends of the air duct 200 are respectively connected to the joint part 310 and the sealing plate 400, so that the installation of the air duct 200 can be completed; and in some embodiments, referring to Figure 3 , the sealing plate 400 needs to be installed on another sliding window along the second direction, wherein there is an angle between the first direction and the second direction. At this time, during the installation of the air duct 200, the conversion joint 100 is connected between the joint portion 310 and the air duct 200, and then the air duct 200 is connected to the sealing plate 400. Since along the extension direction of the tube body 130, the first air outlet is projected on the reference surface to form a first projection, and the second air outlet is projected on the reference surface to form a second projection, the first projection is staggered with the second projection, and the reference surface is coplanar with the first air outlet or the second air outlet. Therefore, compared with directly connecting the air duct 200 between the joint portion 310 and the sealing plate 400, during the extension process of the tube body 130, the second air outlet of the second connecting portion 120 is matched with the connecting hole 410 through angle change, so that the air duct 200 and the sealing plate 400 are matched and installed, which is convenient for switching and installing sliding windows with different sliding methods.

[0059] In some embodiments, reference Figure 1 The shapes of the first air outlet and the second air outlet are oblong, and the sealing plate 400 is designed to be adapted to the sliding window that is pushed up and down. The sealing plate 400 is installed on the sealing plate 400 in the sliding window that is pushed up and down, and the inner diameter of the length direction of the connecting hole 410 is set horizontally. When it is needed to be used on the sliding window that is pushed left and right, the sealing plate 400 is rotated and installed on the edge of the sliding window, so that the inner diameter of the length direction of the connecting hole 410 is set vertically, and then the air duct 200 is connected to the joint part 310 through the conversion joint 100, so that the installation angle of the air duct 200 is converted, refer to Figure 3 , so that the air duct 200 is connected to the sealing plate 400, the inner diameter of the connecting end of the air duct 200 in the length direction is vertically set, or tends to be vertically set, to avoid interference between the air duct 200 and the wall, which is convenient for installation.

[0060] In some embodiments, the air duct 200 and the first connecting part 110 are connected by a snap-fit ​​connection, and the joint part 310 and the second connecting part 120 are connected by a snap-fit ​​connection. The conversion joint 100 is connected between the air duct 200 and the joint part 310 by snap-fitting, so that the connection between the conversion joint 100 and the air duct 200 and the joint part 310 is tightened and convenient for disassembly, so that it can be disassembled and assembled at any time.

[0061] In addition, in some other embodiments, the air duct 200 is connected to the first connection portion 110 via screws, and the joint portion 310 is connected to the second connection portion 120 via screws.

[0062] Reference Figure 5 The mobile air conditioner 300 of the present invention includes an air duct installation assembly, which includes an air duct 200, a sealing plate 400 and a conversion joint 100. The air duct 200 is detachably connected to the first connection part 110, the sealing plate 400 is detachably connected to the second connection part 120, the sealing plate 400 is provided with a connecting hole 410, and the air passage 140 in the tube body 130 is connected to the connecting hole 410, wherein the sealing plate 400 and the air duct 200 are detachably connected.

[0063] In some embodiments, reference Figure 4 , the sealing plate 400 is installed on the sliding window along the first direction, and the two ends of the air duct 200 are respectively connected to the joint part 310 and the sealing plate 400, so that the installation of the air duct 200 can be completed; and in some embodiments, referring to Figure 5 , the sealing plate 400 needs to be installed on another sliding window along the second direction, wherein the first direction and the second direction have an angle. At this time, during the installation of the air duct 200, one end of the air duct 200 is connected to the joint portion 310, and the other end is installed on the conversion joint 100, and the conversion joint 100 is connected to the sliding window. Since along the extension direction of the tube body 130, the first air outlet is projected on the reference surface to form a first projection, and the second air outlet is projected on the reference surface to form a second projection, the first projection and the second projection are staggered, and the reference surface is coplanar with the first air outlet or the second air outlet. Therefore, relative to directly installing the air duct 200 on the sealing plate 400, during the extension process of the tube body 130, the second connecting portion 120 changes its angle relative to the first connecting portion 110, thereby changing the angle of one end of the air duct 200 connected to the connecting hole 410, and cooperating with the connecting hole 410 with the changed installation direction, the air duct 200 can be installed with the sealing plate 400, which is convenient for installation of sliding windows with different sliding methods.

[0064] Reference Figure 5In some embodiments, the air duct 200 and the first connecting portion 110 are connected by a snap-fit ​​connection, and the sealing plate 400 and the second connecting portion 120 are connected by a snap-fit ​​connection. The conversion joint 100 is connected between the air duct 200 and the sealing plate 400 by snap-fitting, so that the connection between the conversion joint 100 and the air duct 200 and the sealing plate 400 is more secure and convenient for disassembly, so that it can be disassembled and assembled at any time.

[0065] In addition, in some other embodiments, the air duct 200 and the first connecting portion 110 are connected by screws, and the sealing plate 400 and the second connecting portion 120 are connected by screws.

[0066] In the above-mentioned embodiment, the air duct 200 and the sealing plate 400 can be directly connected, and the shape of the connecting hole 410 matches the shape of the cross section of the air duct 200. Therefore, the inner diameter of the connecting hole 410 is not consistent. The shorter inner diameter of the connecting hole 410 is set along the sliding direction of the sliding window, which can reduce the area of ​​the sealing plate 400 and facilitate installation. After the sealing plate 400 changes its installation angle, the air duct 200 can be matched with the connecting hole 410 with the changed installation angle through the conversion joint 100. There is no need to redesign the sealing plate 400, which saves costs. The shorter inner diameter of the connecting hole 410 can also be kept set along the sliding direction of the sliding window, which is convenient for installation.

[0067] In some embodiments, reference Figure 3 and Figure 5 The air duct 200 is configured as a tube-in-tube design, wherein the air duct 200 includes an inner tube 220 and an outer tube 210, the space between the inner tube 220 and the outer tube 210 is a first air duct 231, and the space inside the inner tube 220 is a second air duct 232. One of the first air duct 231 and the second air duct 232 is used for air intake and the other is used for air discharge. In order to match the air duct 200 with a tube-in-tube design, the conversion joint 100 is provided with a partition in the tube body 130, and the partition divides the air passage 140 into a first air duct 141 and a second air duct 142, and the first air duct 141 and the second air duct 142 are independent of each other. The first air duct 141 is connected to the first air duct 231, and the second air duct 142 is connected to the second air duct 232, so that the airflow of the air intake is separated from the airflow of the air discharge to prevent cross-flow.

[0068] Specifically, refer to Figure 7 A connecting pipe 131 is provided in the air passage 140, a first air duct 141 is constructed between the tube body 130 and the connecting pipe 131, and a second air duct 142 is provided in the connecting pipe 131. The connecting pipe 131 is directly connected to the inner tube 220, so that the second air passage 232 is connected to the second air duct 142, so that the airflow of the inlet air is separated from the airflow of the outlet air to prevent cross-flow.

[0069] Reference Figure 8In some embodiments, the conversion joint 100 includes a first connector 151 and a second connector 152, and the first connector 151 and the second connector 152 are fixedly connected to form the conversion joint 100 and to construct the air passage 140. In actual processing, the conversion joint 100 is generally produced by injection molding. In the process of designing the mold, it is necessary to design movable inserts in the mold to process the air passage 140. Therefore, the conversion joint 100 is divided into a design, wherein the air passage 140 is divided into a first connector 151 and a second connector 152. In the process of designing the mold, it is not necessary to design movable inserts for demolding, which greatly reduces the design cost. In addition, if the conversion joint 100 is a three-dimensional shape symmetrical about the central axis, in the process of designing the mold, only one set of molds needs to be designed to simultaneously process the symmetrical first connector 151 and the second connector 152 that can be symmetrically spliced ​​and formed, which greatly reduces the design cost.

[0070] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A conversion joint, characterized in that: include: A tube body, wherein an air passage is provided through the tube body; A first connecting portion, the first connecting portion is arranged at one end of the tube body and is formed with a first air outlet communicating with the air passage; A second connecting portion, the second connecting portion is arranged at the other end of the tube body and is formed with a second air outlet communicating with the air passage; Wherein, along the extension direction of the tube body, the first tuyere is projected onto a reference surface to form a first projection, the second tuyere is projected onto the reference surface to form a second projection, the first projection partially overlaps with the second projection, and the reference surface is coplanar with the first tuyere or the second tuyere; The plane where the first air outlet is located is parallel to the plane where the second air outlet is located, and the starting point and the end point of the extension direction of the tube body are the center points of the first air outlet and the second air outlet respectively.

2. The conversion joint according to claim 1, characterized in that: The shape of the first air outlet is consistent with the shape of the second air outlet.

3. The conversion joint according to claim 2, characterized in that: The first projection completely overlaps with the second projection after being rotated 90° clockwise or counterclockwise around the geometric center of the first projection.

4. The conversion joint according to claim 1, characterized in that: A partition is provided in the tube body, and the partition divides the air passage into a first air duct and a second air duct, and the first air duct and the second air duct are independent of each other.

5. The conversion joint according to claim 4, characterized in that: The partition part includes a connecting pipe, the connecting pipe is connected to the tube body, the connecting pipe is arranged in the air passage, the first air duct is constructed between the tube body and the connecting pipe, and the second air duct is arranged in the connecting pipe.

6. The conversion joint according to claim 5, characterized in that: The conversion joint includes a first connecting member and a second connecting member, and the first connecting member and the second connecting member are fixedly connected to form the conversion joint and construct the air passage.

7. The air duct installation assembly is characterized in that: include: Air duct; A sealing plate, wherein the sealing plate is provided with a connecting hole; The conversion joint according to any one of claims 1 to 6; The air duct can be detachably connected to the first connection part or the sealing plate, and the second connection part can be detachably connected to the sealing plate, so that the air duct is directly connected to the connecting hole, or the air duct is connected to the connecting hole through the conversion joint.

8. The air duct installation assembly according to claim 7, characterized in that: The air duct includes an inner tube and an outer tube detachably connected to the first connecting portion. The conversion joint is further provided with a connecting tube located in the air passage, and the connecting tube is detachably connected to the inner tube.

9. A mobile air conditioner, characterized in that: include: Air duct; The conversion joint according to any one of claims 1 to 6; Wherein, the first connecting portion is detachably connected to the air duct.

10. The mobile air conditioner according to claim 9, characterized in that: The mobile air conditioner is provided with a joint part, and the joint part can be detachably connected to the air duct or the second connecting part, so that the air duct is directly connected to the joint part, or is connected to the joint part through the conversion joint.

11. The mobile air conditioner according to claim 9, characterized in that: The mobile air conditioner also includes a sealing plate, which is provided with a connecting hole. The sealing plate can be detachably connected to the air duct or the second connecting part so that the air duct is directly connected to the connecting hole, or the air duct is connected to the connecting hole through the conversion joint.

12. The mobile air conditioner according to claim 11, characterized in that: The air duct includes an inner tube and an outer tube detachably connected to the first connecting portion. The conversion joint is further provided with a connecting tube located in the air passage, and the connecting tube is detachably connected to the inner tube.

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