Pipe joint and wall-mounted air conditioner indoor unit with same

Abstract

The invention provides a pipe joint and a wall-mounted air conditioner indoor unit with the same. The air conditioner indoor unit comprises a fresh air device, a framework, a housing, a fresh air pipe and a pipe joint. The fresh air device is provided with a protruding air inlet part. The pipe joint comprises a sealing ring, at least one first connecting part and at least one second connecting part. The sealing ring is arranged to be annular and used for sealing a gap between the air inlet part and the fresh air pipe in the radial direction. The first connecting part extends from the periphery of the outer ring of the sealing ring to the direction close to the air inlet part and is used for being connected with the air inlet part. The second connecting part extends in the same direction as the first connecting part from the periphery of the inner ring of the sealing ring and is used for being connected with a fresh air pipe. The pipe joint is simple and reliable in structure, outdoor fresh air can directly flow into the fresh air device through the fresh air pipe, good sealing performance is achieved between the air inlet part and the fresh air pipe, air volume loss at the pipe joint is reduced or even eliminated, and working noise of the fresh air device is lowered.

Description

Technical Field

[0001] The invention relates to the field of air conditioning, in particular to a pipe joint and a wall-mounted air-conditioner indoor unit having the pipe joint. Background Art

[0002] In the existing wall-mounted air-conditioning indoor unit with fresh air function, the fresh air device is fixed at one end of the frame in the longitudinal direction. If the fresh air duct runs from the end cover of the cover adjacent to the fresh air device, the fresh air duct needs to be close to the upper edge of the pipe hole to leave enough running space for the online pipe and the drain pipe, otherwise it is easy to support the online pipe and the drain pipe, causing the cover to bulge; if the fresh air duct runs from the end cover of the cover away from the fresh air device, it needs to be installed away from other devices on the frame (such as an ion sterilization module), and the fresh air duct is close to the lower edge of the pipe hole, resulting in the need to prepare two fresh air duct joints for each air-conditioning indoor unit.

[0003] After comprehensive consideration, it is necessary to provide a pipe joint with flexible and convenient installation and stable and reliable structure, and a wall-mounted air-conditioner indoor unit having the pipe joint. Summary of the invention

[0004] An object of the first aspect of the present invention is to overcome at least one technical defect in the prior art and to provide a pipe joint for connecting a fresh air device and a fresh air duct.

[0005] A further object of the first aspect of the present invention is to improve structural stability.

[0006] Another further object of the first aspect of the present invention is to improve the sealing performance of the fresh air flow path.

[0007] An object of the second aspect of the present invention is to provide a wall-mounted air conditioner indoor unit having the pipe joint.

[0008] According to a first aspect of the present invention, there is provided a pipe joint for connecting a fresh air device and a fresh air duct, wherein the fresh air device is provided with a protruding air inlet portion, and the pipe joint comprises:

[0009] A sealing ring, arranged in a ring shape, for sealing the gap between the air inlet portion and the fresh air duct in the radial direction;

[0010] At least one first connection portion, arranged to extend from the outer peripheral edge of the sealing ring toward the air inlet portion, and used for connecting with the air inlet portion; and

[0011] At least one second connection portion is arranged to extend from the inner periphery of the sealing ring in the same direction as the first connection portion, and is used for connecting to the fresh air duct.

[0012] The pipe joint of the present invention is provided with a sealing ring and a first connecting portion and a second connecting portion extending in the same direction from the outer circle periphery and the inner circle periphery of the sealing ring respectively. The connection between the fresh air device and the fresh air duct is achieved by connecting the first connecting portion and the second connecting portion to the air inlet portion and the fresh air duct of the fresh air device respectively. The structure is simple and reliable, outdoor fresh air can directly flow into the fresh air device through the fresh air duct, and there is good sealing between the air inlet portion and the fresh air duct, thereby reducing or even eliminating the air volume loss at the pipe joint and reducing the working noise of the fresh air device.

[0013] Optionally, the at least one first connection portion and the at least one second connection portion are located on the outer side and the inner side of the air inlet portion, respectively.

[0014] The pipe joint of the present invention enables the first connecting portion and the second connecting portion to be located on the outer side and the inner side of the air inlet portion respectively, so that the pipe joint can be cooperatively connected with the outer wall of the air inlet portion and the outer wall of the fresh air duct, cleverly limiting the movement of the pipe joint in the axial direction and the radial direction relative to the air inlet portion, thereby improving the structural stability of the pipe joint, and increasing the cross-section of the air flowing from the fresh air duct to the air inlet portion, thereby reducing wind resistance and noise.

[0015] Optionally, the at least one first connection portion and the at least one second connection portion are staggered in the circumferential direction; and / or

[0016] A dimension of the second connection portion in the axial direction is greater than a dimension of the first connection portion in the axial direction.

[0017] The pipe joint of the present invention arranges the first connection part and the second connection part alternately in the circumferential direction, and during the assembly process, the second connection part is first inserted into the air inlet part and the first connection part is connected to the air inlet part later. Compared with setting a continuous annular connection part, not only the production cost is reduced, but the first connection part and the second connection part can be deformed during the assembly process, and the tolerance rate for the size and shape of the air inlet part, the pipe structure and the fresh air duct is high, so that the connection between the three is more stable and reliable, and the efficiency of assembly positioning is further improved.

[0018] Optionally, the number of the first connection part and the number of the second connection part are both plural; and

[0019] The plurality of first connection parts and the plurality of second connection parts are evenly distributed relative to the sealing ring.

[0020] The pipe joint of the present invention is provided with a plurality of first connection parts and a plurality of second connection parts, and the plurality of first connection parts and the plurality of second connection parts are evenly distributed in the circumferential direction, so that the pipe joint is subjected to uniform force, which improves the connection reliability, facilitates assembly and positioning, and prolongs the service life of the pipe joint.

[0021] Optionally, the fresh air duct is provided with an external thread; and

[0022] The second connecting portion is provided with an internal thread, and the internal thread is configured to cooperate with the external thread to connect the pipe joint and the fresh air duct.

[0023] The pipe joint of the present invention achieves a fixed connection with the fresh air duct through internal and external threads. It is not only convenient and quick to install, but also can utilize the strength reinforcement structure of the fresh air duct itself as the external thread. It is also easy to adjust the position of the fresh air duct in the axial direction relative to the pipe joint (i.e., the air inlet part), thereby reducing the accuracy requirement for the preset length of the fresh air duct.

[0024] Optionally, the pipe joint is characterized by further comprising:

[0025] The extension portion is arranged to extend from the inner periphery of the sealing ring in a direction away from the air inlet portion; wherein,

[0026] The extension portion is annular; and

[0027] The extending portion is provided with the same internal thread as the second connecting portion.

[0028] The pipe joint of the present invention further improves the connection reliability between the fresh air duct and the pipe joint, and the sealing performance of the fresh air duct and the pipe joint in the radial direction by providing an extension portion with the same internal thread as the second connection portion and allowing the extension portion to surround the fresh air duct in the circumferential direction.

[0029] Optionally, the pipe joint is characterized by further comprising:

[0030] The limiting portion is arranged to extend radially inward from an end of the second connecting portion away from the sealing ring to limit the extreme position of the fresh air duct relative to the pipe joint.

[0031] The pipe joint of the present invention limits the fresh air duct by arranging a limiting portion at the end of the second connecting portion, thereby preventing the fresh air duct from being excessively inserted into the air inlet portion or even entering other parts of the fresh air device, preventing the fresh air duct from interfering with other components such as the air valve, and reducing unexpected wind resistance.

[0032] Optionally, the air inlet portion is provided with at least one positioning column extending radially outward; and

[0033] Each of the first connecting parts is provided with a limiting groove extending in the axial direction, and the limiting groove is formed with an opening at an end away from the sealing ring, so as to allow the positioning column to slide into the limiting groove and be fixed with the limiting groove.

[0034] The pipe joint of the present invention is fixed to the air inlet part by a clamping connection through an axially extending limiting groove. There is no need to set a complex positioning structure on the air inlet part and no need to use fasteners, thus avoiding interference with the fresh air flow path, reducing production costs and simplifying assembly steps.

[0035] Optionally, each of the first connecting portions is provided with at least one through hole, and the at least one through hole is located on at least one side of the limiting groove in the transverse direction.

[0036] The pipe joint of the present invention is provided with a through hole in the transverse direction of the axially extending limiting groove, which improves the deformation capacity of the first connecting part during the assembly process, thereby improving the reliability of the fixing of the limiting groove and the positioning column, and reducing the assembly damage rate of the pipe joint and the positioning column.

[0037] Optionally, the air inlet portion is provided with at least one positioning column extending radially outward; and

[0038] Each of the first connecting parts is provided with a rotation slot; wherein the rotation slot comprises:

[0039] an introduction section, which is arranged to extend in an axial direction from an end of the first connecting portion away from the sealing ring, and is formed with an opening at the end away from the sealing ring, for allowing the positioning column to slide into the rotating slot; and

[0040] The fixing section is arranged to extend from the end of the introduction section close to the sealing ring along the circumferential direction and is used for fixing the positioning column.

[0041] The pipe joint of the present invention is fixed to the air inlet part by setting an "L"-shaped rotating groove, and does not need to be equipped with a complex positioning structure on the air inlet part and does not need to use fasteners, thereby avoiding interference with the fresh air flow path and reducing production costs. Moreover, the large-area contact limitation in the axial direction of the fixing section makes the installation of the pipe joint and the air inlet part more stable and reliable.

[0042] Optionally, the pipe joint is characterized by further comprising:

[0043] At least one sealing rib is arranged to extend from the outer peripheral edge of the sealing ring toward the air inlet portion, and together with the at least one first connecting portion, covers the outer wall of the end of the air inlet portion close to the sealing ring.

[0044] The pipe joint of the present invention is provided with a sealing rib connected to the circumferential end of the first connecting part on the outer periphery of the sealing ring, that is, the pipe joint is formed with a U-shaped groove that cooperates with the end of the air inlet part, which not only further improves the sealing performance of the air inlet part and the pipe joint, but also the sealing rib further limits the movement of the pipe joint in the radial direction relative to the air inlet part, thereby making the connection between the pipe joint and the air inlet part more stable.

[0045] Optionally, the pipe joint is characterized by further comprising:

[0046] At least one positioning rib is arranged to extend from the sealing rib in a direction away from the sealing ring; wherein,

[0047] Each of the positioning ribs is arranged corresponding to one of the second connecting portions in the radial direction; and

[0048] The size of each positioning rib in the axial direction and the size in the circumferential direction are respectively smaller than the size of the corresponding second connecting portion in the axial direction and the size in the circumferential direction.

[0049] The pipe joint of the present invention is provided with a positioning rib at the position of the sealing rib corresponding to the second connecting portion, which can limit the pipe joint in the radial direction and provide guidance for the pipe joint to be moved in the axial direction and installed on the air inlet portion, that is, positioning is first achieved through a small-area positioning rib and then cooperates with a large-area sealing rib to achieve limited sealing, thereby improving assembly efficiency.

[0050] According to a second aspect of the present invention, there is provided a wall-mounted air conditioner indoor unit, characterized in that it comprises:

[0051] A fresh air device is provided with a protruding air inlet portion;

[0052] A frame, configured to support the fresh air device;

[0053] A cover shell, configured to cover the frame;

[0054] A fresh air duct is arranged to communicate with the outdoor environment and is connected with the air inlet portion through an end cover of the housing in the longitudinal direction; and

[0055] The pipe joint according to any one of the above is configured to connect the air inlet portion and the fresh air duct.

[0056] The air conditioner indoor unit of the present invention connects the fresh air device and the fresh air duct by adopting the pipe joint of any of the above-mentioned embodiments, and has a simple and reliable structure, high assembly efficiency, and good sealing. After the assembly of the fresh air device, the pipe joint and the fresh air duct is completed, the fresh air duct can be further flexibly bent, or the fresh air duct can be connected to other components without damaging the connection between the fresh air device, the pipe joint and the fresh air duct.

[0057] Optionally, the end cover is provided with a cover plate intermittently connected to form a pipe hole after the cover plate is removed; and / or

[0058] At least the portion of the fresh air duct located inside the housing is configured to be bendable and deformable.

[0059] The end cover of the air conditioner indoor unit of the present invention is provided with an intermittently connected cover plate, and the fresh air duct can be bent and deformed. No matter whether the fresh air duct runs to the left, right or backward, the same adapter of the present invention can be used, which improves the versatility of the adapter, can flexibly adjust the pipeline according to the installation environment, and reduces the production cost.

[0060] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0062] Figure 1 is a schematic axonometric view of an air conditioner indoor unit according to an embodiment of the present invention, viewed from the rear to the front;

[0063] Figure 2 yes Figure 1 A schematic partial enlarged view of the middle area A;

[0064] Figure 3 yes Figure 1 A schematic partial exploded view of area A of an indoor unit of the air conditioner shown;

[0065] Figure 4 yes Figure 3 Schematic axonometric view of the center pipe joint;

[0066] Figure 5 From another perspective Figure 4 a schematic axonometric view of the pipe joint shown;

[0067] Figure 6 is a schematic axonometric view of a pipe joint according to another embodiment of the present invention;

[0068] Figure 7 From another perspective Figure 6 Schematic axonometric view of the pipe fitting shown.

[0069] Reference numerals:

[0070] Air conditioner indoor unit 100;

[0071] skeleton 110;

[0072] Cover 120; end cover 121; cover plate 122;

[0073] Fresh air device 130; air inlet 131; positioning column 132;

[0074] Fresh air duct 140; external thread 141;

[0075] Pipe joint 150; sealing ring 151; first connecting portion 152; second connecting portion 153; internal thread 1531; extension portion 154; limiting portion 155; rotation slot 156; introduction section 1561; fixing section 1562; limiting slot 1571; through hole 1572; sealing rib 158; positioning rib 159. DETAILED DESCRIPTION

[0076] Figure 1 is a schematic axonometric view of an air-conditioning indoor unit 100 according to an embodiment of the present invention, viewed from the rear to the front; Figure 2 yes Figure 1 A schematic partial enlarged view of the middle area A; Figure 3 yes Figure 1 FIG. 1 is a schematic partial exploded view of area A of the air conditioner indoor unit 100. Figures 1 to 3 The air conditioning indoor unit 100 of the present invention may include a casing, a heat exchange fan, a heat exchanger, a fresh air device 130 and a fresh air duct 140.

[0077] The casing may be provided with a heat exchange air inlet and a heat exchange air outlet.

[0078] The heat exchange fan can be arranged in the casing and is arranged to promote air to flow from the heat exchange air inlet to the heat exchange air outlet.

[0079] The heat exchanger may be disposed in the casing and located on the flow path between the heat exchange air inlet and the heat exchange air outlet for heat exchange with the air flowing through it.

[0080] In some embodiments, the air conditioning indoor unit 100 of the present invention may be a wall-mounted air conditioning indoor unit.

[0081] The housing may include a frame 110 for supporting the fresh air device 130, and a cover 120 for covering the frame 110. The cover 120 may be provided with an end cap 121 at both ends in the longitudinal direction.

[0082] The fresh air device 130 may be provided with an air inlet portion 131 that protrudes relative to other portions of the fresh air device 130 .

[0083] The fresh air duct 140 may be arranged to communicate with the outdoor environment, and pass through an end cover 121 of the housing 120 to communicate with the air inlet 131 .

[0084] The end cover 121 for passing the fresh air duct 140 may be provided with an intermittently connected cover plate 122 to form a pipe hole after the cover plate 122 is removed.

[0085] The two end covers 121 of the housing 120 in the longitudinal direction may be respectively provided with a cover plate 122 so as to flexibly adjust the direction of the pipeline according to the installation environment.

[0086] The cover plate 122 itself may include a plurality of disassembled parts that are intermittently connected, so that pipe holes of different sizes can be formed by disassembling different disassembled parts.

[0087] In other embodiments, the air-conditioning indoor unit 100 of the present invention may also be other types of air conditioners such as a cabinet-type air-conditioning indoor unit.

[0088] In particular, the air conditioning indoor unit 100 of the present invention further includes a pipe joint 150 for connecting the air inlet portion 131 and the fresh air duct 140 .

[0089] Figure 4 yes Figure 3 A schematic axonometric view of the middle pipe joint 150; Figure 5 From another perspective Figure 4 A schematic isometric view of a pipe joint 150 is shown. Figures 3 to 5 The pipe joint 150 may include a sealing ring 151 , at least one first connecting portion 152 , and at least one second connecting portion 153 .

[0090] In the present invention, at least one is one, two or more than two.

[0091] The sealing ring 151 may be configured to be annular, and is used to seal the gap between the air inlet portion 131 and the fresh air duct 140 in the radial direction.

[0092] The first connection portion 152 may be configured to extend from the outer peripheral edge of the sealing ring 151 toward the direction close to the air inlet portion 131 for connection with the air inlet portion 131 .

[0093] The second connection portion 153 can be configured to extend from the inner periphery of the sealing ring 151 in the same direction as the first connection portion 152 , and is used to be connected to the fresh air duct 140 .

[0094] The pipe joint 150 of the present invention is provided with a sealing ring 151 and a first connecting portion 152 and a second connecting portion 153 extending in the same direction from the outer circle periphery and the inner circle periphery of the sealing ring 151 respectively. The connection between the fresh air device 130 and the fresh air duct 140 is achieved by connecting the first connecting portion 152 and the second connecting portion 153 to the air inlet 131 of the fresh air device 130 and the fresh air duct 140 respectively. The structure is simple and reliable, and outdoor fresh air can directly flow into the fresh air device 130 via the fresh air duct 140. There is good sealing between the air inlet 131 and the fresh air duct 140, thereby reducing or even eliminating the air volume loss at the pipe joint 150 and reducing the working noise of the fresh air device 130.

[0095] In some embodiments, the first connection portion 152 and the second connection portion 153 may be located at the outer side and the inner side of the air inlet portion 131 respectively.

[0096] The pipe joint 150 of the present invention enables the first connecting portion 152 and the second connecting portion 153 to be located on the outer side and the inner side of the air inlet 131 respectively, so that the pipe joint 150 can be cooperatively connected with the outer wall of the air inlet 131 and the outer wall of the fresh air duct 140, cleverly limiting the movement of the pipe joint 150 in the axial direction and the radial direction relative to the air inlet 131, thereby improving the structural stability of the pipe joint 150, and increasing the cross-section of the pipeline for air flowing from the fresh air duct 140 to the air inlet 131, thereby reducing wind resistance and noise.

[0097] In some embodiments, the first connection portion 152 and the second connection portion 153 may be staggered in the circumferential direction.

[0098] The pipe joint 150 of the present invention enables the first connection part 152 and the second connection part 153 to be staggered in the circumferential direction. Compared with setting a continuous annular connection part, not only the production cost is reduced, but also the first connection part 152 and the second connection part 153 can be deformed during the assembly process, and the tolerance rate for the size and shape of the air inlet part 131, the pipe structure and the fresh air duct 140 is high, making the connection between the three more stable and reliable.

[0099] In some further embodiments, the number of the first connection portion 152 and the number of the second connection portion 153 may both be plural.

[0100] The plurality of first connection portions 152 and the plurality of second connection portions 153 may be evenly distributed relative to the sealing ring 151 .

[0101] The pipe joint 150 of the present invention is provided with a plurality of first connection parts 152 and a plurality of second connection parts 153, and the plurality of first connection parts 152 and the plurality of second connection parts 153 are evenly distributed in the circumferential direction, so that the pipe joint 150 is subjected to uniform force, which improves the connection reliability, facilitates assembly and positioning, and prolongs the service life of the pipe joint 150.

[0102] In some embodiments, a dimension of the second connection portion 153 in the axial direction may be greater than a dimension of the first connection portion 152 in the axial direction.

[0103] During the assembly process of the pipe joint 150 of the present invention, the second connection part 153 is first inserted into the air inlet part 131 and the first connection part 152 is connected to the air inlet part 131 afterwards, that is, the pipe joint 150 is roughly positioned by the second connection part 153 first, further improving the efficiency of assembly positioning of the pipe joint 150 and the air inlet part 131.

[0104] In some embodiments, the fresh air duct 140 may be provided with an external thread 141 . The second connection portion 153 may be provided with an internal thread 1531 .

[0105] The internal thread 1531 may be configured to cooperate with the external thread 141 to connect the pipe joint 150 and the fresh air duct 140 .

[0106] The pipe joint 150 of the present invention is fixedly connected to the fresh air duct 140 through internal and external threads 141. It is not only convenient and quick to install, but also can utilize the strength reinforcement structure of the fresh air duct 140 itself as the external thread 141. It is also easy to adjust the position of the fresh air duct 140 in the axial direction relative to the pipe joint 150 (i.e., the air inlet part 131), thereby reducing the accuracy requirement for the preset length of the fresh air duct 140.

[0107] In some embodiments, the pipe joint 150 may further include a limiting portion 155 .

[0108] The limiting portion 155 may be configured to extend radially inward from an end of the second connecting portion 153 away from the sealing ring 151 to limit the extreme position of the fresh air duct 140 relative to the pipe joint 150 .

[0109] The pipe joint 150 of the present invention limits the fresh air duct 140 by setting a limiting portion 155 at the end of the second connecting portion 153, thereby preventing the fresh air duct 140 from being excessively inserted into the air inlet portion 131 or even entering other parts of the fresh air device 130, preventing the fresh air duct 140 from interfering with other components such as an air valve, and reducing unexpected wind resistance.

[0110] In some embodiments, the fitting 150 may further include at least one sealing rib 158 .

[0111] The sealing rib 158 may be configured to extend from the outer periphery of the sealing ring 151 toward the air inlet portion 131 , and together with the first connecting portion 152 cover the outer wall of the end of the air inlet portion 131 close to the sealing ring 151 .

[0112] The pipe joint 150 of the present invention is provided with a sealing rib 158 connected to the circumferential end of the first connecting portion 152 on the outer periphery of the sealing ring 151, that is, the pipe joint 150 is formed with a U-shaped groove that cooperates with the end of the air inlet portion 131, which not only further improves the sealing performance between the air inlet portion 131 and the pipe joint 150, but also the sealing rib 158 further limits the movement of the pipe joint 150 in the radial direction relative to the air inlet portion 131, thereby making the connection between the pipe joint 150 and the air inlet portion 131 more stable.

[0113] In some further embodiments, the pipe joint 150 may further include at least one positioning rib 159 .

[0114] The positioning rib 159 may be configured to extend from the sealing rib 158 in a direction away from the sealing ring 151 .

[0115] Each positioning rib 159 may be disposed in the radial direction corresponding to one second connection portion 153. And the axial and circumferential dimensions of each positioning rib 159 may be respectively smaller than the axial and circumferential dimensions of the corresponding second connection portion 153.

[0116] The pipe joint 150 of the present invention is provided with a positioning rib 159 at the position of the sealing rib 158 corresponding to the second connecting portion 153, which can limit the pipe joint 150 in the radial direction and provide guidance for the pipe joint 150 to move in the axial direction and be installed in the air inlet portion 131, that is, positioning is first achieved through the small-area positioning rib 159 and then cooperates with the large-area sealing rib 158 to achieve limiting sealing, thereby improving assembly efficiency.

[0117] In some embodiments, the air inlet portion 131 may be provided with at least one positioning column 132 extending radially outward. The number of the positioning columns 132 may be the same as the number of the first connecting portions 152 .

[0118] Each first connection portion 152 may be provided with a rotation slot 156. Specifically, the rotation slot 156 may include an introduction section 1561 and a fixing section 1562.

[0119] The introduction section 1561 may be configured to extend from the end of the first connection portion 152 away from the sealing ring 151 along the axial direction, and an opening is formed at the end away from the sealing ring 151 for allowing the positioning column 132 to slide into the rotation slot 156 .

[0120] The fixing section 1562 may be configured to extend from the end of the introduction section 1561 close to the sealing ring 151 along the circumferential direction, and is used to fix the positioning column 132 .

[0121] The pipe joint 150 of the present invention is fixed to the air inlet part 131 by setting an "L"-shaped rotating groove 156. There is no need to set a complicated positioning structure for the air inlet part 131 and no need to use fasteners, thereby avoiding interference with the fresh air flow path and reducing production costs. In addition, the large-area contact limitation in the axial direction by the fixing section 1562 makes the installation of the pipe joint 150 and the air inlet part 131 more stable and reliable.

[0122] Figure 6 is a schematic axonometric view of a pipe joint 150 according to another embodiment of the present invention; Figure 7 From another perspective Figure 6 A schematic isometric view of a pipe joint 150 is shown. Figure 6 and Figure 7 , and Figures 4 to 5 The differences between the illustrated embodiments include:

[0123] In the embodiment where the pipe joint 150 is connected to the fresh air duct 140 via the internal and external threads 141 , the pipe joint 150 may further include an extension portion 154 .

[0124] The extension portion 154 may be configured to extend from the inner periphery of the sealing ring 151 in a direction away from the air inlet portion 131 .

[0125] The extension portion 154 may be annular and provided with an internal thread 1531 identical to that of the second connection portion 153 .

[0126] The pipe joint 150 of the present invention is provided with an extension portion 154 having the same internal thread 1531 as the second connection portion 153, and the extension portion 154 surrounds the fresh air duct 140 in the circumferential direction, thereby further improving the connection reliability between the fresh air duct 140 and the pipe joint 150, and the sealing performance in the radial direction between the fresh air duct 140 and the pipe joint 150.

[0127] In other embodiments, each first connecting portion 152 may be provided with a limiting groove 1571 extending along the axial direction, and the limiting groove 1571 is formed with an opening at the end away from the sealing ring 151 for allowing the positioning column 132 to slide into the limiting groove 1571 and be fixed with the limiting groove 1571.

[0128] Each limiting groove 1571 may be formed with a plurality of retaining positions, and the positioning column 132 may be retained at each retaining position, so that the position of the pipe joint 150 relative to the air inlet portion 131 in the axial direction may be adjusted.

[0129] The pipe joint 150 of the present invention is fixed to the air inlet part 131 by means of an axially extending limiting groove 1571. There is no need to provide a complex positioning structure for the air inlet part 131 and no need to use fasteners, thus avoiding interference with the fresh air flow path, reducing production costs and simplifying assembly steps.

[0130] In some further embodiments, each first connection portion 152 may be provided with at least one through hole 1572. The through hole 1572 may be located at least on one side of the limiting groove 1571 in the transverse direction.

[0131] In the illustrated embodiment, a through hole 1572 is respectively formed on two lateral sides of the limiting groove 1571 .

[0132] The pipe joint 150 of the present invention is provided with a through hole 1572 in the transverse direction of the axially extending limiting groove 1571, thereby improving the deformation ability of the first connecting part 152 during the assembly process, thereby improving the reliability of the fixing of the limiting groove 1571 and the positioning column 132, and reducing the assembly damage rate of the pipe joint 150 and the positioning column 132.

[0133] Those skilled in the art will understand that Figure 4 and Figure 5 On the basis of the embodiment, it is also possible to add Figure 6 and Figure 7 The extension portion 154 in the embodiment; Figure 6 and Figure 7 On the basis of the embodiment, it is also possible to add Figure 4 and Figure 5 Positioning ribs 159 in the embodiment.

[0134] The air conditioning indoor unit 100 of the present invention adopts the pipe joint 150 of any of the above-mentioned embodiments to connect the fresh air device 130 and the fresh air duct 140. It has a simple and reliable structure, high assembly efficiency, and good sealing. After the assembly of the fresh air device 130, the pipe joint 150 and the fresh air duct 140 is completed, the fresh air duct 140 can be further flexibly bent, or the fresh air duct 140 can be connected to other components without damaging the connection between the fresh air device 130, the pipe joint 150 and the fresh air duct 140.

[0135] In some embodiments, at least the portion of the fresh air duct 140 located inside the housing 120 may be configured to be bendable and deformable.

[0136] The end cover 121 of the air-conditioning indoor unit 100 of the present invention is provided with an intermittently connected cover plate 122, and the fresh air duct 140 can be bent and deformed. Regardless of whether the fresh air duct 140 runs to the left, right or backward, the same adapter of the present invention can be used, which improves the versatility of the adapter, can flexibly adjust the pipeline according to the installation environment, and reduces the production cost.

[0137] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A pipe joint for connecting a fresh air device and a fresh air pipe, characterized in that: The fresh air device is provided with a protruding air inlet portion, and the pipe joint comprises: A sealing ring, arranged in a ring shape, for sealing the gap between the air inlet portion and the fresh air duct in the radial direction; At least one first connection portion, arranged to extend from the outer peripheral edge of the sealing ring toward the air inlet portion, and used for connecting with the air inlet portion; and At least one second connection portion is arranged to extend from the inner periphery of the sealing ring in the same direction as the first connection portion, and is used for connecting to the fresh air duct.

2. The pipe joint according to claim 1, characterized in that: The at least one first connection portion and the at least one second connection portion are located at an outer side and an inner side of the air inlet portion, respectively.

3. The pipe joint according to claim 1, characterized in that: The at least one first connection portion and the at least one second connection portion are arranged alternately in the circumferential direction; and / or A dimension of the second connection portion in the axial direction is greater than a dimension of the first connection portion in the axial direction.

4. The pipe joint according to claim 3, characterized in that: The number of the first connection part and the number of the second connection part are both plural; and The plurality of first connection parts and the plurality of second connection parts are evenly distributed relative to the sealing ring.

5. The pipe joint according to claim 1, characterized in that: The fresh air duct is provided with an external thread; and The second connecting portion is provided with an internal thread, and the internal thread is configured to cooperate with the external thread to connect the pipe joint and the fresh air duct.

6. The pipe joint according to claim 5, characterized in that: Also includes: The extension portion is arranged to extend from the inner periphery of the sealing ring in a direction away from the air inlet portion; wherein, The extension portion is annular; and The extending portion is provided with the same internal thread as the second connecting portion.

7. The pipe joint according to claim 1, characterized in that: Also includes: The limiting portion is arranged to extend radially inward from an end of the second connecting portion away from the sealing ring to limit the extreme position of the fresh air duct relative to the pipe joint.

8. The pipe joint according to claim 1, characterized in that: The air inlet portion is provided with at least one positioning column extending radially outward; and Each of the first connecting parts is provided with a limiting groove extending in the axial direction, and the limiting groove is formed with an opening at an end away from the sealing ring, so as to allow the positioning column to slide into the limiting groove and be fixed with the limiting groove.

9. The pipe joint according to claim 8, characterized in that: Each of the first connecting portions is provided with at least one through hole, and the at least one through hole is located on at least one side of the limiting groove in the transverse direction.

10. The pipe joint according to claim 1, characterized in that: The air inlet portion is provided with at least one positioning column extending radially outward; and Each of the first connecting parts is provided with a rotation slot; wherein the rotation slot comprises: an introduction section, which is arranged to extend in an axial direction from an end of the first connecting portion away from the sealing ring, and is formed with an opening at the end away from the sealing ring, for allowing the positioning column to slide into the rotating slot; and The fixing section is arranged to extend from the end of the introduction section close to the sealing ring along the circumferential direction and is used for fixing the positioning column.

11. The pipe joint according to claim 1, characterized in that: Also includes: At least one sealing rib is arranged to extend from the outer peripheral edge of the sealing ring toward the air inlet portion, and together with the at least one first connecting portion, covers the outer wall of the end of the air inlet portion close to the sealing ring.

12. The pipe joint according to claim 11, characterized in that: Also includes: At least one positioning rib is arranged to extend from the sealing rib in a direction away from the sealing ring; wherein, Each of the positioning ribs is arranged corresponding to one of the second connecting portions in the radial direction; and The size of each positioning rib in the axial direction and the size in the circumferential direction are respectively smaller than the size of the corresponding second connecting portion in the axial direction and the size in the circumferential direction.

13. A wall-mounted air conditioner indoor unit, characterized in that: include: A fresh air device is provided with a protruding air inlet portion; A frame, configured to support the fresh air device; A cover shell, configured to cover the frame; A fresh air duct is arranged to communicate with the outdoor environment and is connected with the air inlet portion through an end cover of the housing in the longitudinal direction; and The pipe joint according to any one of claims 1 to 12 is configured to connect an air inlet portion and a fresh air duct.

14. The wall-mounted air conditioner indoor unit according to claim 13, characterized in that: The end cover is provided with a cover plate which is intermittently connected so as to form a pipe hole after the cover plate is removed; and / or At least the portion of the fresh air duct located inside the housing is configured to be bendable and deformable.

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