Duct assembly and mobile air conditioner

Abstract

The present invention discloses an air duct assembly and a mobile air conditioner, wherein the air duct assembly includes a first air duct and a second air duct, the second air duct being sleeved on the outside of the first air duct so that a first air duct is formed in the first air duct, and a second air duct is formed between the first air duct and the second air duct; the first air duct can be stretched and extended to the outside of the second air duct alone, so that the first air duct and the second air duct can be connected to the outdoor environment at the same time, so that the double air ducts can be connected to the outdoor environment for air intake and exhaust, and the cooling effect is good; it can also be switched to connect the first air duct with the outdoor environment and the second air duct with the indoor environment, so that air is taken in from the indoor environment and exhausted to the outdoor environment, so that the indoor air has a fresh air effect, which meets the user's usage needs, has a simple and reasonable structure, is more flexible in use, and is more practical and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an air duct assembly and a mobile air conditioner. Background Art

[0002] Mobile air conditioners usually use retractable air inlet and exhaust ducts to connect to the outdoor environment for air intake and exhaust, so as to achieve outdoor heat exchange. In related technologies, the air inlet duct can also take in air from the indoor environment, and the exhaust duct can be connected to the outdoor environment for exhaust, so that the turbid air in the room can be discharged while exchanging heat. However, the existing air inlet and exhaust duct structures cannot be used for heat exchange in two different environments at the same time, and have poor flexibility and cannot meet the use requirements. Summary of the invention

[0003] 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 an air duct assembly and a mobile air conditioner, which can be connected to the outdoor environment by using double air ducts or a single air duct, has a reasonable structure, is more flexible in use, and is more practical and reliable.

[0004] The air duct assembly according to the first aspect of the present invention is applicable to a mobile air conditioner and includes:

[0005] a first air duct, wherein a first air channel is formed inside the first air duct;

[0006] a second air duct, the second air duct being sleeved on the outside of the first air duct so as to form a second air channel between the first air duct and the second air duct;

[0007] The first air duct can extend to the outside of the second air duct, so that the air duct assembly can have a first state in which the first air duct and the second air duct are both connected to the outdoor environment and a second state in which the first air duct alone is connected to the outdoor environment.

[0008] The air duct assembly according to the embodiment of the present invention has at least the following beneficial effects:

[0009] The first air duct and the second air duct are combined to form a tube-in-tube structure, so that a first air duct is formed in the first air duct, and a second air duct is formed between the first air duct and the second air duct, thereby realizing the separation of air intake and exhaust. The first air duct can be stretched and extended to the outside of the second air duct alone. When in use, the first air duct and the second air duct can be connected to the outdoor environment at the same time, thereby realizing double air ducts and the outdoor environment for air intake and exhaust, and having a good cooling effect. It can also be switched to connect the first air duct with the outdoor environment and the second air duct with the indoor environment, so that air is taken in from the indoor environment and exhausted to the outdoor environment, so that the indoor air has a fresh air effect, which meets the user's usage needs, has a simple and reasonable structure, is more flexible in use, and is more practical and reliable.

[0010] According to some embodiments of the present invention, an air duct joint is further included, and the air duct joint is respectively connected to the first air duct and the second air duct.

[0011] According to some embodiments of the present invention, an air duct joint is further included, wherein the air duct joint includes a first connecting member connected to the first air duct and a second connecting member connected to the second air duct, and the first connecting member and the second connecting member are detachably connected.

[0012] According to some embodiments of the present invention, a limiting portion is provided on the inner side of the second connecting member, the limiting portion defines a limiting hole matching the first air duct, and the limiting portion is connected to the first connecting member.

[0013] According to some embodiments of the present invention, the limiting portion is provided with a first buckle along the periphery of the limiting hole, and the first buckle is buckled with the edge of the first connecting member.

[0014] According to some embodiments of the present invention, the first connecting member includes a first clamping ring connected to the first air duct port, and a second clamping ring engaged with the first buckle is provided on the upper side of the first clamping ring.

[0015] According to some embodiments of the present invention, the air duct joint further includes a third connecting member, one end of the third connecting member is connected to the first connecting member, and the other end of the third connecting member extends toward the outside of the first air duct to form a third air duct.

[0016] According to some embodiments of the present invention, a protrusion is provided on the inner side of the second clamping ring, and a clamping groove corresponding to the protrusion is provided on the third connecting member.

[0017] According to some embodiments of the present invention, the first connecting member is eccentrically disposed on the inner side of the second connecting member.

[0018] According to some embodiments of the present invention, the air duct joint further includes a fourth connecting member, the fourth connecting member is provided with a slot connected to an end portion of the second air duct, and the fourth connecting member is connected to the second connecting member.

[0019] According to some embodiments of the present invention, the fourth connecting member includes a first fastening member and a second fastening member, and the first fastening member is connected to the second fastening member to form the slot between the first fastening member and the second fastening member.

[0020] According to some embodiments of the present invention, the second air duct port is provided with a positioning rib, and a positioning groove matching the positioning rib is formed in the slot.

[0021] According to some embodiments of the present invention, a positioning member is provided in the second air duct, and the positioning member includes a positioning portion sleeved on the outside of the first air duct, the positioning portion extends toward the second air duct and forms a supporting portion abutting against the inner wall of the second air duct.

[0022] According to some embodiments of the present invention, an annular groove for accommodating the positioning portion is provided on the outer side of the first air duct.

[0023] According to some embodiments of the present invention, the positioning portion and the supporting portion are formed by elastic rings.

[0024] A mobile air conditioner according to a second embodiment of the present invention comprises an air duct assembly according to the first embodiment.

[0025] According to some embodiments of the present invention, it also includes an air-conditioning body, which is provided with a condenser, an air inlet chamber for installing the condenser, and an air inlet and an air outlet communicated with the air inlet chamber, the air inlet is connected to the second air duct, and the air outlet is connected to the first air duct.

[0026] The mobile air conditioner according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned air duct assembly for air intake and exhaust, the separation of air intake and exhaust is achieved, and there is a first state in which the first air duct and the second air duct are connected to the outdoor environment at the same time, and a second state in which the first air duct is connected to the outdoor environment and the second air duct is connected to the indoor environment, which meets the user's usage needs, has a simple and reasonable structure, is more flexible in use, and is more practical and reliable.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 It is a structural schematic diagram of an air duct assembly according to an embodiment of the present invention;

[0030] Figure 2 A schematic structural diagram of an air duct assembly according to another embodiment of the present invention;

[0031] Figure 3 A schematic diagram of a single-duct outdoor exhaust usage state of an air duct assembly according to an embodiment of the present invention;

[0032] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 5for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 6 It is a schematic diagram of the installation structure of the third connecting piece of the air duct assembly of an embodiment of the present invention;

[0035] Figure 7 is a schematic diagram of the exploded structure of the fourth connecting member of the air duct assembly of an embodiment of the present invention;

[0036] Figure 8 for Figure 7 An installation cross-sectional view of an embodiment of a fourth connecting member is shown;

[0037] Fig. 9 It is a schematic diagram of the installation structure of the positioning member of the air duct assembly according to an embodiment of the present invention;

[0038] Fig.10 is a schematic diagram of the exploded structure of an air duct assembly according to an embodiment of the present invention;

[0039] Fig.11 A schematic structural diagram of a mobile air conditioner according to an embodiment of the present invention;

[0040] Fig.12 It is a schematic diagram of the single-duct outdoor exhaust usage state of the mobile air conditioner according to an embodiment of the present invention.

[0041] Reference numerals:

[0042] Air duct assembly 10;

[0043] Mobile air conditioner 20, air conditioner body 21;

[0044] A first air duct 100, a first air duct 110;

[0045] The second air duct 200, the second air channel 210, and the positioning rib 220;

[0046] Duct joint 300, first connector 310, first through hole 311, first clamp ring 312, second clamp ring 313, second buckle 314, protrusion 315, second connector 320, second through hole 321, limiting portion 322, limiting hole 323, first buckle 324, buckle position 325, connecting rib 326, connecting hole 327;

[0047] A third connecting member 400, a third air duct 410, a slot 411, and a collar 420;

[0048] The fourth connecting member 500, the first buckle member 510, the clamping hole 511, the mounting hole 512, the second buckle member 520, the plug block 521, the mounting column 522, and the slot 530;

[0049] Positioning member 600, positioning portion 610, supporting portion 620, bending section 621;

[0050] Install the joint 700 and the protective net 710. DETAILED DESCRIPTION

[0051] 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.

[0052] In the description of the present invention, it is necessary to understand that descriptions involving orientation, such as up, down, left, right, etc., the orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In the description of the present invention, if there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0054] 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.

[0055] Reference below Figures 1 to 10 The air duct assembly 10 according to the embodiment of the present invention is described as being applicable to a mobile air conditioner 20 .

[0056] See also Figure 1 As shown, the air duct assembly 10 of the embodiment includes a first air duct 100 and a second air duct 200. The second air duct 200 is sleeved on the outside of the first air duct 100. The first air duct 100 is an inner tube and the second air duct 200 is an outer tube, thereby forming a tube-in-tube structure. The first air duct 100 has a first air duct 110 inside, and a second air duct 210 is formed between the first air duct 100 and the second air duct 200.

[0057] In the embodiment, the first air duct 100 is used for exhausting air, and the second air duct 200 is used for intake air. In this case, the first air duct 110 is an exhaust air duct, and the second air duct 210 is an intake air duct. Alternatively, the first air duct 100 is used for intake air, and the second air duct 200 is used for exhausting air. In this case, the first air duct 110 is an intake air duct, and the second air duct 210 is an exhaust air duct. In this way, the intake air and the exhaust air can be separated by the pipe-in-pipe structure, and cross-flow between the first air duct 110 and the second air duct 210 can be avoided.

[0058] The first air duct 100 can be stretched outward from the inside of the second air duct 200 alone, so that the air duct assembly 10 can be used in different states. Figure 1 As shown, when in use, the lower end of the first air duct 100 is connected to the exhaust port of the mobile air conditioner 20, and the lower end of the second air duct 200 is connected to the air inlet of the mobile air conditioner 20. The upper ends of the first air duct 100 and the second air duct 200 are stretched at the same time and directly connected to the window, so that the first air duct 110 and the second air duct 210 are connected to the outdoor environment at the same time. This is the first state of the air duct assembly 10. The outdoor air enters the mobile air conditioner 20 through the second air duct 210, and the air is discharged from the first air duct 110 to the outdoor environment after heat exchange with the condenser, thereby realizing the outdoor heat exchange process of the mobile air conditioner 20. The air intake and exhaust are completed through the outdoor environment, which does not affect the indoor environment and has a good cooling effect.

[0059] See also Figure 1 As shown, the first air duct 100 can be stretched outward from the inside of the second air duct 200 alone, so that the first air duct 100 is directly connected to the window. At this time, there is no need to stretch the second air duct 200. In this way, the first air duct 110 is connected to the outdoor environment, and the second air duct 210 is connected to the indoor environment. This is the second state of the air duct assembly 10. The indoor air enters the mobile air conditioner 20 through the second air duct 210. After the air exchanges heat with the condenser, it is discharged from the first air duct 110 to the outdoor environment, realizing the heat exchange process, and is conducive to discharging the indoor turbid air, so that the indoor air has a fresh air effect. Both states can realize the heat exchange between the mobile air conditioner 20 and the outdoor environment.

[0060] See also Figure 2 As shown, in some embodiments, the duct assembly 10 of the embodiment includes a first duct 100, a second duct 200 and a duct connector 300, and the first duct 100 and the second duct 200 are respectively connected to the duct connector 300. Figure 2As shown, the duct joint 300 is connected to the port positions of the first duct 100 and the second duct 200, and the first duct 100 and the second duct 200 are both located on the same side of the duct joint 300. The first duct 100 and the second duct 200 can move together with the duct joint 300, which is convenient for directly connecting the duct joint 300 to the window, so that the first air duct 110 and the second air duct 210 are connected to the outdoor environment at the same time. The first duct 100 can also be taken out of the duct joint 300 and stretched to the outside separately, that is, the first duct 100 and the duct joint 300 are connected using a detachable separation structure.

[0061] For example, a buckle can be provided at the end of the first air duct 100, and the first air duct 100 can be directly buckled onto the air duct joint 300 by the buckle, so that the first air duct 100 can be easily separated from the air duct joint 300, and then the first air duct 100 can be stretched alone without affecting the connection structure between the second air duct 200 and the air duct joint 300. The first air duct 100 and the air duct joint 300 can also be connected by means of screws or the like. For another example, the air duct joint 300 can be divided into two joints, and the two joints can be disassembled and respectively connected to the first air duct 100 and the second air duct 200, so that the first air duct 100 can be stretched outward alone. It should be noted that the first air duct 100 and the second air duct 200 are not limited to Figure 2 In the connection structure of the illustrated embodiment, for example, the air duct joint 300 is located in the second air duct 210 , and the first air duct 100 and the second air duct 200 are respectively connected to two ends of the air duct joint 300 .

[0062] See also Figure 2 As shown, the duct assembly 10 of the embodiment includes a first duct 100, a second duct 200 and a duct joint 300. The first duct 100 and the second duct 200 are respectively connected to the duct joint 300, and the first duct 100 is located inside the second duct 200, thereby forming a tube-in-tube structure. The first duct 100 has a first air duct 110 inside, and a second air duct 210 is formed between the first duct 100 and the second duct 200. The duct joint 300 is provided with a first through hole 311 communicating with the first duct 110 and a second through hole 321 communicating with the second duct 210.

[0063] See also Figure 2 As shown, the first air duct 100 is an inner tube, and the second air duct 200 is an outer tube. The diameter of the second air duct 200 is larger than that of the first air duct 100, so that there is a certain gap between the first air duct 100 and the second air duct 200, forming a second air duct 210. The first air duct 110 and the second air duct 210 are separated, so that the first air duct 110 and the second air duct 210 can be ventilated at the same time without affecting each other. The pipe-in-pipe structure can separate the air intake and exhaust, avoid cross-flow between the first air duct 110 and the second air duct 210, and is more flexible to install and more convenient to use.

[0064] See also Figure 2 As shown, the duct joint 300 includes a first connecting member 310 and a second connecting member 320. The first connecting member 310 is connected to the port of the first duct 100, and the second connecting member 320 is connected to the port of the second duct 200. The first connecting member 310 is located on the inner side of the second connecting member 320, so that the first duct 100 and the second duct 200 are connected to form a tube-in-tube structure.

[0065] It can be understood that the first connecting member 310 matches the port shape of the first air duct 100, and the second connecting member 320 matches the port shape of the second air duct 200. The first connecting member 310 is provided with a first through hole 311 connected to the first air duct 110, and the second connecting member 320 is provided with a second through hole 321 connected to the second air duct 210. The first air duct 100 and the second air duct 200 are not limited to cylindrical tube bodies, so that the air duct joint 300 can connect the first air duct 100 and the second air duct 200 at the same time.

[0066] See also Figure 2 and Figure 3 As shown, the first connecting member 310 and the second connecting member 320 are connected by a detachable structure, that is, the first connecting member 310 and the second connecting member 320 are detachable and separable. For example, the first connecting member 310 is directly connected to the inner wall of the second connecting member 320. The connection method can be screw connection, threaded connection, buckle connection, etc., which is convenient for disassembly and assembly.

[0067] It can be understood that the second air duct 200 is connected to the second connecting member 320, and the first air duct 100 is connected to the first connecting member 310. Figure 2 As shown, when the first connecting member 310 is connected to the second connecting member 320, the duct joint 300 is an integral structure, and the first duct 100 and the second duct 200 can move together with the duct joint 300, so that the duct joint 300 can be directly connected to the window, so that the first duct 110 and the second duct 210 are connected to the outdoor environment at the same time. This is the first state of the duct assembly 10. Figure 3 As shown, when the first connecting member 310 is separated from the second connecting member 320, the first air duct 100 can move independently with the first connecting member 310, so that the first air duct 100 is stretched outward from the inside of the second air duct 200, so that the first air duct 100 can be independently connected to the window, the first air duct 110 is connected to the outdoor environment, and the second air duct 210 is connected to the indoor environment. This is the second state of the air duct assembly 10. It should be noted that the outdoor environment refers to the outside of the space where the mobile air conditioner is located. For example, the mobile air conditioner cools the room, and the environment outside the room is the outdoor environment. Take the first air duct 110 as the exhaust channel and the second air duct 210 as the air inlet channel as an example for explanation. When installed and used, as Figure 2As shown, the lower end of the first air duct 100 is connected to the exhaust port of the mobile air conditioner 20, and the lower end of the second air duct 200 is connected to the air inlet of the mobile air conditioner 20. The upper ends of the first air duct 100 and the second air duct 200 are connected to the outdoor environment through the air duct joint 300. The outdoor air enters the mobile air conditioner 20 through the second air duct 210. After the air exchanges heat with the condenser, it is discharged from the first air duct 110 to the outdoor environment, thereby realizing the outdoor heat exchange process of the mobile air conditioner 20. The air intake and exhaust are completed through the outdoor environment, which does not affect the indoor environment and has a good cooling effect. When it is necessary to switch to a mode where air is taken in from the indoor environment and exhausted to the outdoor environment, such as Figure 3 As shown, the first air duct 100 extends out and is connected to the outdoor environment, and the indoor air enters the mobile air conditioner 20 through the second air duct 210. After the air exchanges heat with the condenser, it is discharged from the first air duct 110 to the outdoor environment, thereby realizing the heat exchange process. It is also beneficial to discharge the turbid air in the room, so that the indoor air has a fresh air effect. It has high flexibility in use, and users can choose different states to work according to actual needs, which provides a better user experience.

[0068] It should be noted that, in the embodiment, the air inlet and the air outlet of the mobile air conditioner 20 refer to openings for air intake and exhaust to exchange heat with the condenser. The first air duct 100 and the second air duct 200 are both retractable bellows, and the first air duct 100 and the second air duct 200 can be retracted synchronously, or the first air duct 100 can be stretched alone, so as to meet the use requirements of connecting the double air ducts with the outdoor environment or the single air duct with the outdoor environment.

[0069] See also Figure 3 As shown, in some embodiments, a limiting portion 322 is provided on the inner side of the second connecting member 320, the limiting portion 322 is fixedly connected to the second connecting member 320, and a limiting hole 323 matching the first air duct 100 is provided on the limiting portion 322. It can be understood that the second through hole 321 is located on the inner side of the second connecting member 320, and the second through hole 321 and the limiting hole 323 can be separated by the limitation of the limiting portion 322, and the first air duct 100 can freely pass through the limiting hole 323, so as to facilitate the first air duct 100 to be stretched out from the inner side of the second air duct 200. At the same time, the limiting hole 323 plays a positioning role for the first air duct 100, so as to prevent the first air duct 100 from deviating and affecting the ventilation of the second through hole 321, and the structure is practical and reliable.

[0070] See also Figure 2 and Figure 3As shown, the first connector 310 and the limiting portion 322 are connected in a detachable manner. When the first connector 310 and the limiting portion 322 are connected, the first connector 310 and the second connector 320 can be combined into an integral air duct joint 300; when the first connector 310 and the limiting portion 322 are separated, the first connector 310 can be separated from the second connector 320, thereby pulling out the first air duct 100. The first connector 310 and the limiting portion 322 can be connected by screw connection, buckle connection, etc. For example, the first connector 310 and the limiting portion 322 are connected by screws, and the first connector 310 and the limiting portion 322 can be disassembled and separated by removing the screws. The operation is simple and the structure is reasonable and practical.

[0071] It should be noted that the limiting portion 322 is arranged at the position of the second through hole 321. In order to reduce the influence of the limiting portion 322 on the ventilation of the second through hole 321, in the embodiment, the limiting portion 322 adopts an annular structure, the inner side of the limiting portion 322 is the limiting hole 323, and the outer side is the second through hole 321. Among them, the aperture of the limiting hole 323 can be designed to be able to pass the first air duct 100, and at the same time can limit the first connecting member 310 from passing through, so that the limiting portion 322 plays a supporting role on the first connecting member 310, which is convenient for disassembly and assembly.

[0072] See also Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the first connecting member 310 is annular, the outer diameter of the first connecting member 310 is larger than the aperture of the limiting hole 323, and the first connecting member 310 is connected to the limiting portion 322 by buckling. Specifically, a first buckle 324 is provided on the limiting portion 322, and the first buckle 324 is provided to extend toward the upper side of the limiting hole 323, and the first buckle 324 is distributed along the periphery of the limiting hole 323. When the first connecting member 310 is placed on the limiting portion 322, the first buckle 324 is buckled with the edge of the first connecting member 310, so that the first connecting member 310 and the limiting portion 322 are buckled together, and the operation is convenient and quick.

[0073] It can be understood that Figure 5 As shown, the first buckle 324 is arranged near the position of the limiting hole 323, so that a buckle position 325 is formed between the first buckle 324 and the upper end surface of the limiting portion 322, and the edge of the first connecting member 310 matches the buckle position 325, so that the first buckle 324 can be buckled on the edge of the first connecting member 310. In this embodiment, three symmetrically distributed first buckles 324 are arranged on the limiting portion 322, and the first connecting member 310 is fastened simultaneously by the three first buckles 324, so that the structure is firm and stable. Of course, the number of the first buckles 324 is not limited to the number shown in the embodiment. In addition, the first buckle 324 and the limiting portion 322 are an integral injection molding structure, and the structure is stable and reliable.

[0074] See also Figure 3 As shown, in some embodiments, the first connecting member 310 includes a first clamping ring 312 and a second clamping ring 313, the second clamping ring 313 is located above the first clamping ring 312, and the first clamping ring 312 and the second clamping ring 313 are an integrally formed structure, the first clamping ring 312 is connected to the end of the first air duct 100, and the first buckle 324 is buckled with the edge of the second clamping ring 313.

[0075] See also Figure 3 and Figure 4 As shown, specifically, a second buckle 314 is provided inside the first buckle 312, and a first annular groove (not shown in the figure) matching the second buckle 314 is provided on the outer wall of the first air duct 100. During installation, the second buckle 313 is fastened in the first annular groove outside the first air duct 100 through the second buckle 314, so that the first connecting member 310 is connected to the first air duct 100. Among them, the outer diameter of the first buckle 312 is smaller than the aperture of the limiting hole 323, and the outer diameter of the second buckle 313 is larger than the aperture of the limiting hole 323, so that the first buckle 312 can be inserted into the inner side of the limiting hole 323, the second buckle 313 is abutted against the limiting portion 322, and the first buckle 324 is fastened on the edge of the second buckle 313, so that the first connecting member 310 is fixed on the limiting portion 322, thereby realizing rapid assembly and facilitating disassembly and separation. It is understandable that in some other embodiments, the first clamping ring 312 and the first air duct 100 may also be connected by means of structures such as screws, rivets, and clamps.

[0076] Among them, the first annular groove is formed by the corrugated structure of the pipe wall of the first air duct 100, and the second annular groove is formed on the side wall of the second air duct 200. The corrugated structure enables the first air duct 100 and the second air duct 200 to be able to stretch or contract. The first annular groove is distributed on the side wall of the first air duct 100, and the second annular groove is distributed on the side wall of the second air duct 200. The structures of the first annular groove and the second annular groove are not shown in the accompanying drawings.

[0077] See also Figure 6 As shown, in some embodiments, the duct joint 300 includes a first connector 310, a second connector 320 and a third connector 400. The third connector 400 adopts a ring structure. The lower end of the third connector 400 is connected to the first connector 310, and the upper end of the third connector 400 extends vertically upward to form a third air duct 410. The inner side of the third air duct 410 is a third air channel and is connected to the first air channel 110. When exhausting air, the hot air passes through the first air channel 110 and the third air channel before being discharged to the outdoor environment.

[0078] It is understandable that when the first connector 310 is used in combination with the second connector, the first through hole 311 and the second through hole 321 are located in the same plane, and by adding the third air duct 410 extending outward at the first through hole 311, the air outlet of the third air duct 410 is separated from the second through hole 321 by a certain distance, so as to avoid the second air duct 210 sucking back the hot air when the first air duct 110 exhausts air, and prevent the first air duct 110 and the second air duct 210 from generating cross-flow. In the embodiment, the height of the third air duct 410 is set to at least 30 mm, which effectively plays a role in preventing cross-flow.

[0079] It should be noted that when the first air duct 110 is used alone to connect to the outdoor environment, since the first air duct 110 is separated from the second air duct 210, no cross-flow will occur between the two air ducts, and the third connecting member 400 does not need to be installed.

[0080] In some embodiments, the third connecting member 400 is connected to the first connecting member 310 in a detachable structure. Figure 6 and Fig.10 As shown, a protrusion 315 protruding radially inward is provided on the inner side of the second clamping ring 313, and a collar 420 is extended downwardly to form at the lower end of the third connecting member 400, and a slot 411 matching the protrusion 315 is provided on the side wall of the collar 420. During installation, the collar 420 of the third connecting member 400 is inserted into the inner side of the second clamping ring 313, so that the protrusion 315 corresponds to the opening position of the slot 411, and then the third connecting member 400 is rotated to insert the protrusion 315 into the slot 411 for clamping, so that the third connecting member 400 is fixed on the first connecting member 310, and the installation and disassembly are convenient, and the third connecting member 400 does not affect the ventilation of the first air duct 110.

[0081] See also Figure 2 and Figure 3 As shown, in some embodiments, the first connecting member 310 is eccentrically arranged on the inner side of the second connecting member 320, so that the first air duct 100 can be eccentrically arranged inside the second air duct 200. In the related art, some tube-in-tube structures adopt a concentric arrangement, but the inner tube is unevenly stressed and unstable, and is prone to shifting inside relative to the outer tube. When shifting, the inner tube is likely to block the air duct, resulting in obstruction of ventilation between the outer tube and the inner tube, thereby affecting the operation of the mobile air conditioner 20 and easily generating noise. The embodiment adopts an eccentrically arranged structure, which can make the second air duct 210 concentrated on one side of the first air duct 100 for ventilation, so that the first air duct 100 is mainly subjected to the wind force on one side, which is conducive to reducing wind resistance, reducing the shifting of the first air duct 100, and thereby reducing the influence of the first air duct 100 on the ventilation of the second air duct 200.

[0082] See also Figure 2 and Figure 3As shown, the first air duct 100 is a cylindrical tube body, the second air duct 200 is an elliptical tube body, and the first air duct 100 is eccentrically arranged on one side of the second air duct 200, so that the second air duct 210 has a large enough space for ventilation without affecting the ventilation effect. The first connecting member 310 and the second connecting member 320 respectively match the port shape of the corresponding air duct to ensure the stability of the connection structure. In addition, a connecting rib 326 is arranged on the inner side of the second connecting member 320, and the connecting rib 326 is evenly arranged in the second through hole 321 to form a grid structure. The grid structure reinforces the second connecting member 320 and the limiting portion 322. At the same time, the grid structure can effectively prevent debris from entering the second air duct 210 through the second through hole 321.

[0083] See also Figure 8 and Fig.10 As shown, in some embodiments, the duct joint 300 includes a first connector 310, a second connector 320 and a fourth connector 500, the first duct 100 is connected to the first connector 310, the second connector 320 is sleeved on the end of the second duct 200, wherein the fourth connector 500 is provided with a slot 530, the tube wall of the second duct 200 is fixed in the slot 530, so that the fourth connector 500 is connected to the second duct 200, and at the same time, the second connector 320 is fixedly connected to the fourth connector 500, so that the second duct 200 is installed on the second connector 320, the structure is firm and reliable, the reliability of the duct assembly 10 in use is ensured, and the second duct 200 is effectively prevented from falling off.

[0084] See also Figure 7 and Figure 8 As shown, in some embodiments, the fourth connector 500 includes a first fastener 510 and a second fastener 520. When the first fastener 510 and the second fastener 520 are connected, a slot 530 is formed between the first fastener 510 and the second fastener 520. The first fastener 510 and the second fastener 520 can be connected in a split structure or an integrated structure. Figure 7As shown, taking the split structure as an example, a first fastener 510 is provided with a snap-in hole 511 at one end, and a plug-in block 521 matching the snap-in hole 511 is provided at one end of the second fastener 520, and the plug-in block 521 can be inserted into the snap-in hole 511 for connection. During assembly, the side wall of the end of the second air duct 200 is first placed at the position corresponding to the slot 530 on the first fastener 510, and then the plug-in block 521 of the second fastener 520 is inserted into the snap-in hole 511 of the first fastener 510, so that the first fastener 510 and the second fastener 520 are connected into one body, and the second air duct 200 is clamped by the first fastener 510 and the second fastener 520, so that the fourth connector 500 is assembled with the second air duct 200, and then the fourth connector 500 is installed on the second connector 320. The fourth connector 500 with a split structure is easy to process and shape, simplifies the mold structure, and has a reliable and stable structure.

[0085] See also Figure 7 As shown, the first fastener 510 and the second fastener 520 are fixed by a first fastener (not shown in the figure), and the fourth connecting member 500 is provided with two mounting holes 512 matching the first fastener, and the mounting holes 512 pass through the slot 530. During installation, the first fastener passes through the mounting holes 512 and passes through the second air duct 200, and the fourth connecting member 500 and the second air duct 200 are fixedly connected as a whole by the first fastener, further preventing the second air duct 200 from coming out of the slot 530, thereby improving the reliability of use. It can be understood that the first fastener can also be a bolt, a rivet, a latch, etc.

[0086] See also Figure 8 and Fig.10 As shown, the second connecting member 320 is connected to the fourth connecting member 500 through a second fastener (not shown in the figure). The second fastener used in the embodiment is a screw. The second connecting member 320 is provided with a connecting hole 327 that matches the screw. The fourth connecting member 500 is provided with a mounting column 522. The mounting column 522 is provided with a threaded hole that matches the screw. During assembly, the screw is passed through the connecting hole 327 and then tightened into the threaded hole, thereby fixing the second connecting member 320 and the fourth connecting member 500, and the structure is more reliable and firm. It can be understood that the second fastener can also be a rivet, a latch, etc., which can also achieve the purpose of fixing the second connecting member 320 and the fourth connecting member 500 as one.

[0087] See also Figure 8As shown, in some embodiments, a positioning rib 220 is provided at the port position of the end of the second air duct 200, and the positioning rib 220 can be set as an iron wire embedded in the pipe wall, and a positioning groove matching the positioning rib 220 is formed in the slot 530. When the port of the second air duct 200 is fixed in the slot 530, the positioning rib 220 is clamped in the positioning groove. It can be understood that the second air duct 200 is made of plastic material, and the positioning rib 220 can improve the strength of the second air duct 200, so that the second air duct 200 is connected to the fourth connecting member 500 more firmly and reliably, and the second air duct 200 is prevented from loosening or being easily damaged due to excessive tensile strength.

[0088] It should be noted that the slot 530 has a first side wall and a second side wall that are arranged opposite to each other. The first side wall and the second side wall cooperate to form a curved slot 530. For example, the slot 530 can be limited to a V-shaped, S-shaped or other curved shape. Figure 8 The slot 530 shown in the figure is in a V-shape, so that the slot 530 can match the corrugated shape of the side wall of the second air duct 200, so that the slot 530 can clamp the second air duct 200 more firmly, thereby improving the structural stability.

[0089] See also Fig. 9 and 10 As shown, in some embodiments, a positioning member 600 is installed in the second air duct 210, and the positioning member 600 includes a positioning portion 610 and a supporting portion 620. The positioning member 600 is sleeved on the outer side of the first air duct 100 through the positioning portion 610, so that the positioning member 600 is fastened to the first air duct 100 to prevent the positioning member 600 from falling off the tube body. At the same time, the positioning portion 610 extends toward the second air duct 200 to form a supporting portion 620, and the supporting portion 620 extends to the inner side wall of the second air duct 200 and abuts against the inner side wall of the second air duct 200. The abutment of the supporting portion 620 with the inner side wall of the second air duct 200 can be understood as the supporting portion 620 being in close contact with the inner side wall, so that the supporting portion 620 can support the second air duct 200 and maintain a certain distance between the first air duct 100 and the second air duct 200.

[0090] For example, the positioning portion 610 may be a retaining spring, which matches the tube body of the first air duct 100 and is fastened along the circumference of the tube body by the retaining spring, so that the positioning member 600 is fastened to the first air duct 100. For another example, the positioning portion 610 may be an elastic tube clamp, which can be clamped on the outside of the first air duct 100 to prevent the positioning member 600 from falling off the tube body.

[0091] It can be understood that the positioning member 600 can play a positioning role on the first air duct 100, so that the relative position between the first air duct 100 and the second air duct 200 is fixed. During operation, the first air duct 110 is used for exhausting air, and the second air duct 210 is used for taking in air. Under the positioning effect of the positioning member 600, the first air duct 100 can be prevented from moving inside the second air duct 200, that is, the inner tube is positioned and will not move, and the first air duct 110 and the second air duct 210 can be kept from deforming, effectively ensuring the smoothness of ventilation of the first air duct 110 and the second air duct 210, making the tube-in-tube structure more stable and reliable, and is conducive to reducing the resistance of air intake and exhaust, and playing a noise reduction role.

[0092] In some embodiments, the positioning portion 610 matches the first annular groove on the outside of the first air duct 100, so that the positioning portion 610 can be clamped in the first annular groove for fixation. The first annular groove limits the positioning member 600, making the positioning member 600 more secure and preventing the positioning member 600 from loosening.

[0093] See also Fig. 9 and Fig.10 As shown, in some embodiments, the positioning portion 610 and the support portion 620 are formed by bending an elastic ring in one piece, and the shapes of the positioning portion 610 and the support portion 620 can be bent and formed according to the shape, size and positional relationship of the first air duct 100 and the second air duct 200. The ring of the embodiment is made of steel wire with a certain carbon content, has a sufficiently high strength, good elasticity and is not easy to bend. In this way, the positioning portion 610 formed by bending the ring can have a certain elasticity and can clamp the first air duct 100. During installation, the ring can be directly opened and put on the first air duct 100 by utilizing the elasticity of the ring, and fastened to the outside of the first air duct 100 by the positioning portion 610, and the second air duct 200 is supported by the support portion 620. The installation is convenient and quick, the wind resistance is small, and the ventilation of the second air duct 210 is not affected.

[0094] See also Fig. 9 As shown, the ferrule is an open-loop structure, and an opening is provided at the support portion 620, so that the ferrule can be opened and placed outside the first air duct 100. The open end of the ferrule is bent to form a bent section 621, which is conducive to improving the support strength of the support portion 620 and making the support structure more stable. It can be understood that the ferrule can also adopt a closed-loop structure, which can also play a supporting and positioning role.

[0095] It should be noted that the positioning member 600 can be set at different positions of the first air duct 100 according to the installation requirements, and more than two positioning members 600 can be set on the first air duct 100. The positioning members 600 are distributed along the tube body of the first air duct 100. In this way, by positioning the first air duct 100 at different positions, the stability of the tube-in-tube structure can be further improved, and the inner tube can be effectively prevented from moving inside the outer tube, and the structure is more reliable.

[0096] refer to Fig.11 and Fig.12 A mobile air conditioner 20 according to an embodiment of the present invention is described, and the air duct assembly 10 according to the above embodiment is applied.

[0097] See also Fig.11 As shown, the mobile air conditioner 20 of the embodiment of the present invention comprises an air conditioner body 21 and an air duct assembly 10, wherein a condenser and an exhaust assembly are arranged in the air conditioner body 21, the condenser and the exhaust assembly are installed in the air inlet chamber, and the condenser is used to exchange heat with the outdoor environment; the air inlet of the air inlet chamber is connected to the second air duct 200, and the air outlet is connected to the first air duct 100. According to the use requirements of different environments, the air duct assembly 10 can select a working mode in which the first air duct 110 and the second air duct 210 are connected to the outdoor environment at the same time, or a working mode in which the first air duct 110 is connected to the outdoor environment and the second air duct 210 is connected to the indoor environment.

[0098] See also Fig.11 As shown, when in use, the duct connector 300 is directly pulled out to the window for connection, and the first air duct 110 and the second air duct 210 are connected to the outdoor environment at the same time. The outdoor air enters the mobile air conditioner 20 through the second air duct 210. After the air exchanges heat with the condenser, the hot air is discharged from the first air duct 110 to the outdoor environment, thereby realizing the outdoor heat exchange process of the mobile air conditioner 20. The air intake and exhaust are completed through the outdoor environment, which does not affect the indoor environment and has a good cooling effect.

[0099] See also Fig.12 As shown, the first connector 310 is separated from the second connector 320, and the first air duct 100 is stretched separately and connected to the outdoor environment. When working, the indoor air enters the mobile air conditioner 20 through the second air duct 210. After the air exchanges heat with the condenser, the hot air is discharged from the first air duct 110 to the outdoor environment, realizing the heat exchange process, and is conducive to exhausting the turbid air in the room, so that the indoor air has a fresh air effect, with high flexibility in use, which can meet different use requirements and provide a better use experience. The structure of the condenser and the exhaust assembly is not shown in the accompanying drawings. The specific structure of the air conditioner body 21 is easy to obtain by ordinary technicians in this field and will not be repeated.

[0100] It should be noted that if Fig.10 As shown, the first air duct 100 and the second air duct 200 can be connected to the air conditioner body 21 through the installation joint 700, and the installation joint 700 is connected to the lower ends of the first air duct 100 and the second air duct 200. The installation joint 700 can match the tube-in-tube structure. In addition, a protective net 710 can be set at the position of the installation joint 700, and the protective net 710 corresponds to the first air duct 110 and the second air duct 210 respectively. The protective net 710 can effectively prevent debris or animals such as mice from entering the air conditioner body 21, thereby ensuring the normal operation of the mobile air conditioner 20.

[0101] 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. Air duct assembly, suitable for mobile air conditioner, characterized in that: include: a first air duct, wherein a first air channel is formed inside the first air duct; a second air duct, the second air duct being sleeved on the outside of the first air duct so as to form a second air channel between the first air duct and the second air duct; Wherein, the first air duct can extend to the outside of the second air duct, so that the air duct assembly can have a first state and a second state, the first state is when the first air duct and the second air duct are both connected to the outdoor environment; the second state is when the first air duct is connected to the outdoor environment alone, and the second air duct is connected to the indoor environment, the indoor air enters the mobile air conditioner through the second air duct, and the indoor air is discharged from the first air duct to the outdoor environment after heat exchange; Also included is an air duct joint, the air duct joint includes a first connecting piece connected to the first air duct and a second connecting piece connected to the second air duct, the first connecting piece and the second connecting piece are detachably connected, the first connecting piece is provided with a first through hole communicating with the first air duct, and the second connecting piece is provided with a second through hole communicating with the second air duct; When the air duct assembly is in the first state, the first connecting member is connected to the second connecting member; when the air duct assembly is in the second state, the first connecting member is separated from the second connecting member.

2. The air duct assembly according to claim 1, characterized in that: A limiting portion is provided on the inner side of the second connecting member, the limiting portion defines a limiting hole matching the first air duct, and the limiting portion is connected to the first connecting member.

3. The air duct assembly according to claim 2, characterized in that: The limiting portion is provided with a first buckle along the periphery of the limiting hole, and the first buckle is buckled with the edge of the first connecting member.

4. The air duct assembly according to claim 3, characterized in that: The first connecting member includes a first clamping ring connected to the first air duct port, and a second clamping ring engaged with the first buckle is provided on the upper side of the first clamping ring.

5. The air duct assembly according to claim 4, characterized in that: The air duct joint further includes a third connecting member, one end of which is connected to the first connecting member, and the other end of which extends toward the outside of the first air duct to form a third air duct.

6. The air duct assembly according to claim 5, characterized in that: A protrusion is provided on the inner side of the second clamping ring, and a clamping groove corresponding to the protrusion is provided on the third connecting member.

7. The air duct assembly according to claim 1, characterized in that: The first connecting member is eccentrically disposed on the inner side of the second connecting member.

8. The air duct assembly according to claim 1, characterized in that: The air duct joint further includes a fourth connecting piece, the fourth connecting piece is provided with a slot connected to the end of the second air duct, and the fourth connecting piece is connected to the second connecting piece.

9. The air duct assembly according to claim 8, characterized in that: The fourth connecting member includes a first buckling member and a second buckling member, and the first buckling member is connected to the second buckling member to form the slot between the first buckling member and the second buckling member.

10. The air duct assembly according to claim 9, characterized in that: The second air duct port is provided with a positioning rib, and a positioning groove matching the positioning rib is formed in the slot.

11. The air duct assembly according to claim 1, characterized in that: A positioning member is provided in the second air duct, and the positioning member includes a positioning portion sleeved on the outside of the first air duct, the positioning portion extends toward the second air duct and is formed with a supporting portion abutting against the inner wall of the second air duct.

12. The air duct assembly according to claim 11, characterized in that: An annular groove for accommodating the positioning portion is provided on the outer side of the first air duct.

13. The air duct assembly according to claim 11, characterized in that: The positioning portion and the supporting portion are formed by elastic rings.

14. A mobile air conditioner, characterized in that: The invention comprises the air duct assembly according to any one of claims 1 to 13.

15. The mobile air conditioner according to claim 14, characterized in that: It also includes an air conditioner body, which is provided with a condenser, an air inlet chamber for installing the condenser, and an air inlet and an air outlet connected to the air inlet chamber, the air inlet is connected to the second air duct, and the air outlet is connected to the first air duct.

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