A wind channel assembly, a wind channel connecting structure and a wind channel are convenient to disassemble

Abstract

The application discloses a kind of air duct assembly, air duct connecting structure and air duct, air duct assembly includes frame and the switch valve piece of being arranged on frame, frame has the outer interface surface towards operator, and the inner interface structure for connecting air duct is present on the other side of outer interface surface, and inner interface structure includes at least by two first magnetic attraction piece First magnetic attraction combination, first magnetic attraction combination is used to attract air duct on the second magnetic attraction combination of being arranged in correspondence with it when air duct assembly is connected with air duct;Compared with prior art, the air duct assembly of the application, by first magnetic attraction combination and second magnetic attraction combination connection, so that air duct assembly can be connected with air duct interface after house decoration, can avoid damage to switch valve piece during decoration, and air duct assembly can be easily removed from air duct, facilitate subsequent maintenance, and since air valve assembly is built-in in air duct interface, it is connected into indoor air inlet again using canvas air duct, and it will not cause impact on indoor fine decoration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air handling equipment, in particular to an air duct assembly, an air duct connecting structure and an air duct. BACKGROUND

[0002] With the improvement of living standards, air conditioners are becoming more and more popular in people's daily life. Now many families install central air conditioners for convenience. The central air conditioner usually cools or heats with a compressor, and then sends cold air or hot air into each room of the user through the air duct. The air duct body of the central air conditioner is usually installed in the ceiling when the house is decorated. After the wall and ceiling of the house are decorated, the canvas air duct connected with the air outlet of the air duct body is communicated with the air outlet of each room. Usually, an opening and closing valve piece is arranged at each air outlet of the air duct body. When cooling or heating is needed in a corresponding room, the corresponding opening and closing valve piece is opened to form an air supply duct with the air duct opening on the air duct body. The air in the air duct enters the canvas air duct through the air supply duct, and then flows along the canvas air duct and enters the aluminum alloy air outlet arranged in the corresponding room, and then is blown into the corresponding room. Due to the existence of the canvas air duct, it is difficult for the user to take the opening and closing valve piece off the air duct body when the opening and closing valve piece needs to be repaired or replaced. Moreover, since the air duct body is sealed in the ceiling, the mounting surface of the air duct body for mounting the opening and closing valve piece is vertically downward, and it is difficult for the user to align the mounting surface of the opening and closing valve piece with the mounting surface of the air duct body. SUMMARY

[0003] The present application aims to provide a convenient air duct assembly, air duct connecting structure and air duct for solving the above technical problems.

[0004] A convenient air duct assembly, comprising a frame and an opening and closing valve piece arranged on the frame, the frame has an external connecting surface facing the operator, and the other side of the external connecting surface has an internal connecting structure for connecting the air duct; wherein the external connecting surface has an open state, in which the opening and closing valve piece forms an air supply duct on at least one side, and the internal connecting structure comprises a first magnetic attraction combination composed of at least two first magnetic attraction pieces, which is used to attract the second magnetic attraction combination arranged on the air duct when the air duct assembly is connected with the air duct.

[0005] According to an embodiment of the present application, the first magnetic attraction combination is two first magnetic attraction pieces, and the center of the frame is between the two first magnetic attraction pieces; the first magnetic attraction combination is three first magnetic attraction pieces, and the area of the triangle surrounded by the three first magnetic attraction pieces is not less than 0.44 times the area surrounded by the frame, and the center of the frame is in the triangle surrounded by the three first magnetic attraction pieces; the first magnetic attraction combination is four first magnetic attraction pieces, and the area of the quadrilateral surrounded by the four first magnetic attraction pieces is not less than 0.5 times the area surrounded by the frame, and the center of the frame is in the quadrilateral surrounded by the four first magnetic attraction pieces.

[0006] According to an embodiment of the present application, the canvas air duct is connected with the air duct and the frame is located in the canvas air duct, so that the air in the air duct can only enter the canvas air duct through the air supply air duct formed by the switch valve piece.

[0007] According to an embodiment of the present application, the other side of the outer surface of the frame is provided with a sealing layer, which wraps the other side of the outer surface of the frame and forms a avoiding hole at the position corresponding to the first magnetic attraction member.

[0008] According to an embodiment of the present application, one side of the frame is provided with a containing cavity, and a PCB board, a driving motor and a sensor assembly are arranged in the containing cavity, the driving motor and the sensor assembly are electrically connected with the PCB board, and the driving motor is used to drive the switch valve piece.

[0009] An air duct connecting structure is used to connect the air duct assembly, which comprises an air duct body, and a second magnetic attraction combination composed of at least two second magnetic attraction members is fixed on the air duct body and arranged correspondingly with the first magnetic attraction combination.

[0010] According to an embodiment of the present application, the canvas air duct is connected with the side of the air duct body facing the operator through air nails and seals the contact surface between the canvas air duct and the air duct body; or the canvas air duct is crimped between the frame and the air duct body when the frame is connected with the air duct body and seals the contact surface between the canvas air duct and the air duct body.

[0011] According to an embodiment of the present application, a bottom plate is further included, which is fixedly connected with the air duct body through screws, and the second magnetic attraction member is arranged in the second magnetic attraction arrangement part.

[0012] According to an embodiment of the present application, the canvas air duct is crimped between the bottom plate and the air duct body, and the contact surface between the canvas air duct and the air duct body is sealed, so that the air in the air duct body can only enter the canvas air duct through the air supply air duct formed by the switch valve piece.

[0013] An air duct adopts the air duct assembly, which comprises an air duct body provided with at least one air outlet, and each air outlet on the air duct body is connected with an air duct assembly through the air duct connecting structure.

[0014] Compared with the prior art, the air duct assembly of the present application is connected with the second magnetic attraction combination arranged on the air duct interface through the first magnetic attraction combination, so that the air duct assembly can be connected with the air duct interface after the house is decorated, the damage to the switch valve piece during decoration can be avoided, the air duct assembly can be easily removed from the air duct as a whole, subsequent maintenance is facilitated, and the air valve assembly is arranged in the air duct interface and connected with the indoor air outlet through the canvas air duct, so that the indoor decoration is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Exploded view of the air duct assembly of the present invention;

[0016] Figure 2 Exploded view of the air duct connection structure of the present invention;

[0017] Figure 3 Bottom view of the air duct connection structure of the present invention;

[0018] Figure 4 Sectional view in the direction of A-A; Figure 3

[0019] Sectional view in the direction of B-B; Figure 5 Figure 3 Sectional view in the direction of A;

[0020] Figure 6 Figure 5 Enlarged view of the portion A;

[0021] Figure 7 Structure schematic view of the air duct of the present invention;

[0022] Figure 8 Exploded view of the air valve assembly of the present invention;

[0023] Figure 9 Sectional view in the direction of A-A of the switch valve piece; Figure 8

[0024] Bottom view of the air valve assembly when closed; Figure 10

[0025] Sectional view in the direction of C-C; Figure 11 Figure 10 Sectional view in the direction of D-D;

[0026] Figure 12 Figure 10 Bottom view of the air valve assembly when open;

[0027] Figure 13 Sectional view in the direction of E-E;

[0028] Figure 14 Sectional view in the direction of F-F; Figure 13

[0029] Sectional view in the direction of G-G; Figure 15 Figure 13

[0030] ​​​​​​In the figure: 1. frame, 11. first magnetic attraction element, 12. first magnetic attraction setting part, 1a. plastic side plate, 1b. box-shaped metal plate, 2. switch valve piece, 21. intermediate shaft, 22. blade body, 221. rubber hole, 23. soft contact part, 24. soft cover layer, 25. soft extension part, 3. canvas air duct, 4. PCB board, 5. driving motor, 6. air duct body, 61. second magnetic attraction element, 7. bottom plate, 71. second magnetic attraction setting part

[0031] The implementation and advantages of the present application will be further described in conjunction with the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0032] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a number of practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0033] It should be noted that all directional references, such as upper, lower, left, right, front, rear, etc., used herein are only used for the purpose of explanation and are not to be construed as limiting in any manner. These directional references relate to the orientation of the components in a certain specific orientation (as shown in the drawings), and if the specific orientation changes, the directional references will also change accordingly.

[0034] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and is not particularly intended to indicate the order or sequence, nor is it intended to limit the present application. It is merely for the purpose of distinguishing between components or operations described with the same technical terms, and cannot be understood as indicating or implying the relative importance of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0035] In order to further understand the content, characteristics and effects of the present application, the following embodiments are given, and are described in detail as follows with reference to the accompanying drawings:

[0036] Embodiment one:

[0037] Please refer to Figure 1The embodiment discloses a kind of air duct assemblies, air duct assembly includes frame 1 and the switch valve piece 2 of setting on frame 1, frame 1 has the outer interface surface towards operator, the inner interface structure for connecting air duct is present on the other side of outer interface surface;Wherein, outer interface surface has opening state, in opening state, switch valve piece 2 at least one side forms air supply air duct, inner interface structure includes at least by two first magnetic attraction piece 11 First magnetic attraction combination, first magnetic attraction combination is used to attract air duct on the second magnetic attraction combination correspondingly arranged when air duct assembly is connected with air duct.The force center and the gravity center of frame 1 coincide, can make air duct assembly and air duct connect more firmly when two first magnetic attraction pieces 11 of first magnetic attraction combination and two magnetic attraction pieces of second magnetic attraction combination arranged on air duct interface attract, so that air duct assembly is installed to the air duct interface of air duct, and switch valve piece 2 is installed to air outlet, not only can avoid damage to switch valve piece 2 during decoration process, and in subsequent use process, when needing to overhaul air valve assembly, air valve assembly is conveniently taken out from air outlet.

[0038] If first magnetic attraction combination is composed of two first magnetic attraction pieces 11, the center of frame 1 is between two first magnetic attraction pieces 11.That is, if frame 1 is square in shape, two first magnetic attraction pieces 11 of first magnetic attraction combination are located at the two ends of diagonal of frame 1 or the two ends of middle line of frame 1, two magnetic attraction pieces in second magnetic attraction combination arranged on air duct interface are arranged at the two ends of diagonal of air duct interface or the two ends of middle line of air duct interface, so that when two first magnetic attraction pieces 11 of first magnetic attraction combination and two magnetic attraction pieces of second magnetic attraction combination arranged on air duct interface attract, the center of force and the gravity center of frame 1 coincide, can make air duct assembly and air duct connect more firmly.

[0039] If the first magnetic attraction assembly is composed of three first magnetic attraction members 11, the area of the triangle surrounded by the three first magnetic attraction members 11 is not less than 0.44 times the area surrounded by the frame 1, and the center of the frame 1 is in the triangle surrounded by the three first magnetic attraction members 11. That is, the connecting line of the three first magnetic attraction members 11 of the first magnetic attraction assembly in turn forms a triangle inscribed in the quadrilateral surrounded by the frame 1, so that the center of the quadrilateral and the center of the triangle coincide, and when the frame 1 is connected with the air duct, the frame 1 is uniformly stressed, and uneven stress of the frame 1 can be avoided. When the triangle surrounded by the three first magnetic attraction members 11 is inscribed in the quadrilateral composed of the frame 1, if one angle of the triangle is at the midpoint of one side of the square, and the opposite side of the angle is parallel to the opposite side of the square, the area of the triangle inscribed in the quadrilateral is the smallest at this time. Assuming that the quadrilateral surrounded by the frame 1 is a square, and the side length of the square is 2a, the triangle surrounded by the three first magnetic attraction members 11 is an isosceles triangle with a base length of a*2 1 / 2 , and a height of a3 1 / 2 , the area of the triangle is a 2 *3 1 / 2 , the area of the quadrilateral is 4*a 2 , and the ratio of the area of the smallest triangle to the side angle of the quadrilateral is 3 1 / 2 / 4, which is 0.433. Therefore, the area of the triangle surrounded by the three first magnetic attraction members 11 is not less than 0.44 times the area surrounded by the frame 1. When the triangle surrounded by the three first magnetic attraction members 11 is inscribed in the quadrilateral composed of the frame 1, if one angle of the triangle is at the corner point of the square, and the other two angles are at the two opposite sides, respectively, the area of the inscribed triangle is the largest at this time. Assuming that the quadrilateral surrounded by the frame 1 is a square, and the side length of the square is 2a, the triangle surrounded by the three first magnetic attraction members 11 is an equilateral triangle with a side length of a*5 1 / 2 , and a height of a*15 1 / 2 , the area of the triangle is 5*a 2 *3 1 / 2 / 4, the area of the quadrilateral is 4*a 2 , and the ratio of the area of the smallest triangle to the side angle of the quadrilateral is 5*3 1 / 2 / 16, which is 0.541. Therefore, the area of the triangle surrounded by the three first magnetic attraction members 11 is not greater than 0.55 times the area surrounded by the frame 1.

[0040] If the first magnetic attraction assembly is composed of four first magnetic attraction members 11, the area of the quadrilateral surrounded by the four first magnetic attraction members 11 is not less than 0.5 times the area surrounded by the frame 1, and the center of the frame 1 is in the quadrilateral surrounded by the four first magnetic attraction members 11. That is, when the quadrilateral surrounded by the four first magnetic attraction members 11 is the incircle quadrilateral of the frame 1, the area of the quadrilateral surrounded by the four first magnetic attraction members 11 is the smallest, and when the frame 1 is a square with a side length of 2a, the incircle quadrilateral becomes a*2 1 / 2 , the area of the incircle quadrilateral is 2*a 2 , and the area of the quadrilateral is 4*a 2 , so the area of the quadrilateral surrounded by the four first magnetic attraction members 11 is not less than 0.5 times the area surrounded by the frame 1. When the four first magnetic attraction members 11 are respectively arranged at the four corners of the frame 1, the area of the quadrilateral surrounded by the four first magnetic attraction members 11 is the largest, and at this time, the area of the quadrilateral surrounded by the four first magnetic attraction members 11 is equal to the area of the incircle quadrilateral of the frame 1.

[0041] Please refer to Figure 1 In the embodiment, the number of the first magnetic attraction members 11 is preferably four, and the four first magnetic attraction members 11 are respectively arranged at the four corners of the quadrilateral surrounded by the frame 1.

[0042] Please refer to Figure 1 The air duct assembly of the embodiment further comprises a canvas air duct 3, the canvas air duct 3 is connected with the air duct and the frame 1 is located in the canvas air duct 3, so that the air in the air duct can only enter the canvas air duct 3 through the air supply duct formed by the switch valve piece 2. That is, the air duct interface and the indoor air outlet are communicated through the canvas air duct 3, one end of the canvas air duct 3 is connected with the air duct interface, and the other end is connected with the indoor louvered air outlet. When the house is decorated, only the air duct is fixed to the ceiling. After the house is decorated, one end of the canvas air duct 3 is connected with the air duct interface, then the frame 1 is sent into the canvas air duct 3 and magnetically connected with the second magnetic attraction assembly at the air duct interface through the first magnetic attraction assembly, and then the other end of the canvas air duct 3 is connected with the indoor louvered air outlet. The canvas air duct 3 seals the air supply duct formed by the switch valve piece 2 in the inside, and introduces the air supplied by the air supply duct into the indoor louvered air outlet, which does not affect the indoor finishing, and also avoids the influence of the separately external air outlet on the beauty of the finishing.

[0043] In the embodiment, the other side of the outer surface of the frame 1 is provided with a sealing layer, which wraps the other side of the outer surface of the frame 1 and forms a avoiding hole at the position corresponding to the first magnetic attraction component 11. If the side of the frame 1 provided with the outer surface is referred to as the outer side of the frame 1, the other side of the outer surface of the frame 1 is referred to as the inner side of the frame 1, which is provided with an inner surface for connecting with the air duct. In specific applications, the inner side of the frame 1 is provided with a sealing layer, which is used to press between the inner surface of the frame 1 and the connecting surface of the air duct when the frame 1 is connected with the air duct. The sealing layer is made of 3mm EPDM elastic cotton, which can seal the connecting surface of the air duct at the interface between the inner surface of the frame 1 and the air duct, so as to avoid air leakage between the air duct interface and the frame 1. In addition, in order to avoid affecting the magnetic attraction force when the first magnetic attraction assembly is magnetically connected with the second magnetic attraction assembly at the air duct interface, the sealing layer is provided with a avoiding hole at the position corresponding to each first magnetic attraction component 11 of the first magnetic attraction assembly, so that the attracting surface of each first magnetic attraction component 11 is exposed from the avoiding hole. When the air duct assembly is connected with the air duct interface, the first magnetic attraction assembly can be firmly connected with the second magnetic attraction assembly provided on the air duct interface.

[0044] Please refer to Figure 1 In the embodiment, the side of the frame 1 is provided with a containing cavity, which is provided with a PCB board 4, a driving motor 5 and a sensor assembly. The driving motor 5 and the sensor assembly are electrically connected with the PCB board 4, and the driving motor 5 is used to drive the switch valve piece 2. In specific applications, the frame 1 includes two plastic side plates 1a and two box-shaped metal pieces 1b. The two plastic side plates 1a are arranged along the direction parallel to the middle shaft 21. The two box-shaped metal pieces 1b are connected between the two ends of the plastic side plates 1a along the direction perpendicular to the middle shaft 21 and together with the two plastic side plates 1a to form the frame 1. The two box-shaped metal pieces 1b are provided with bearings. The middle shaft 21 of the switch valve piece 2 is rotatably connected in the bearings. The box-shaped metal piece 1b on one side is further provided with a synchronous shaft. The middle shaft 21 of each switch valve piece 2 is connected with the synchronous shaft. The synchronous shaft is connected with the driving end of the driving motor 5. When the driving motor 5 drives the synchronous shaft, the synchronous shaft drives the middle shaft 21 of all the switch valve pieces 2 to rotate synchronously, so as to open or close the air valve assembly. The sensor assembly is used to receive instructions and transmit signals to the PCB board 4. The PCB board 4 outputs corresponding control instructions to the driving motor 5 according to the received signals. In actual applications, the sensor assembly is connected with the signal of a remote controller controlled by a user externally. The user sends instructions to the sensor assembly by controlling the remote controller. The instructions include opening or closing the air valve assembly, the air supply amount of the air supply duct formed by the switch valve piece 2 of the air valve assembly, etc. After the sensor assembly receives the instructions, the instructions are sent to the PCB board 4 in the form of signals. The PCB board 4 starts the driving motor 5 according to the received signals.

[0045] Please refer to Figure 1In the embodiment, the frame 1 is provided with a first magnetic attraction arrangement 12, and the first magnetic attraction member 11 is arranged in the first magnetic attraction arrangement 12. In a specific application, the first magnetic attraction arrangement 12 is arranged at both ends of the two plastic side plates 1a of the frame 1, and protrudes outward from the plastic side plate 1a, that is, after the first magnetic attraction member 11 is arranged in the first magnetic attraction arrangement 12, the inner side of the frame 1 is a plane, and when the air duct assembly is connected to the air duct, the first magnetic attraction combination on the frame 1 is connected to the second magnetic attraction combination on the air duct interface.

[0046] The air duct assembly of the embodiment is connected to the second magnetic attraction combination arranged on the air duct interface through the first magnetic attraction combination, so that the air duct assembly can be connected to the air duct interface after the house is decorated, and damage to the switch valve piece 2 during decoration can be avoided. In addition, since the air duct assembly is fixed by the first magnetic attraction combination and the second magnetic attraction combination arranged on the air duct interface, the air duct assembly can be easily removed from the air duct, facilitating subsequent maintenance. In addition, since the air valve assembly is arranged in the air duct interface, and the canvas air duct 3 is connected to the indoor air inlet, the indoor decoration is not affected.

[0047] Embodiment two:

[0048] Please refer to Figures 2 to 6The embodiment relates to a wind channel connecting structure, and the wind channel connecting structure is designed and developed to solve the connection problem of a wind channel assembly and a wind channel. The wind channel connecting structure is used for connecting the wind channel assembly of the first embodiment and comprises a wind channel body 6. The wind channel body 6 is fixed with a second magnetic attraction combination composed of at least two second magnetic attraction pieces 61. The second magnetic attraction combination is correspondingly arranged with the first magnetic attraction combination. That is to say, in actual application, the wind channel body 6 is provided with a wind channel interface, and the wind channel interface is provided with an air outlet in communication with the inside of the wind channel body 6. Before house decoration, the wind channel body 6 is first installed on a ceiling, and then the second magnetic attraction combination is fixed to the wind channel interface on the wind channel body 6. The plurality of second magnetic attraction pieces 61 forming the second magnetic attraction combination surround the air outlet, and the center line between the plurality of second magnetic attraction pieces 61 forming the second magnetic attraction combination or the center of the plane formed by the plurality of second magnetic attraction pieces 61 forming the second magnetic attraction combination is projected to the center of the air outlet. After the house decoration is completed, when the wind channel assembly needs to be installed at the wind channel interface, the first magnetic attraction piece 11 in the first magnetic attraction combination and the second magnetic attraction piece 61 in the second magnetic attraction combination are corresponded one by one, the first magnetic attraction piece 11 and the second magnetic attraction piece 61 are attracted to each other, and then the wind channel assembly and the wind channel body 6 are connected. The magnetic attraction connection mode of the wind channel assembly and the wind channel body 6 does not need accurate positioning when the wind channel assembly is installed at the wind channel interface. The magnetic attraction force between the first magnetic attraction piece 11 and the second magnetic attraction piece 61 can install the frame 1 at the wind channel interface and guide the position of the frame 1, so that the installation of the frame 1 does not need artificial accurate positioning, the installation of the wind channel assembly is simple and convenient, and when the switch valve piece 2 needs to be maintained, the maintenance personnel only need to pull down the frame 1 to disassemble the wind channel assembly from the wind channel body 6. The disassembly and assembly are relatively simple. Compared with the previous screw fixing mode, the magnetic attraction mode is used to fix the wind channel assembly, the re-disassembly in the maintenance process does not damage the attraction force between the first magnetic attraction combination and the second magnetic attraction combination, and the magnetic attraction force between the first magnetic attraction combination and the second magnetic attraction combination is connected to each other, so that the switch valve piece 2 can be prevented from being damaged in the decoration process.

[0049] Generally, the air duct body 6 is arranged along the corridor of the house and is provided with an air duct interface at the corresponding position of the house, which is connected with the louvered air outlet in the corresponding room through the canvas air duct 3 to realize the air supply from the air duct body 6 to the room. The canvas air duct 3 is an intermediate pipeline connecting the air outlet on the air duct body 6 and the louvered air outlet in the room. The canvas air duct 3 needs to guide the air in the air duct body 6 to the louvered air outlet of the room after the air enters the canvas air duct 3 from the air outlet through the air supply pipeline formed by the switch valve piece 2. In addition, the canvas air duct 3 cannot leak air after the air enters it and during the air flowing along it. Therefore, in specific use, the canvas air duct 3 is connected to the side of the air duct body 6 facing the operator through the air nail, and the contact surface between the canvas air duct 3 and the air duct body 6 is sealed. In this way, after the air in the air duct body 6 enters the canvas air duct 3 through the air supply pipeline formed by the switch valve piece 2, the air flows along the canvas air duct 3 and is discharged from the louvered air outlet of the room connected with the canvas air duct 3, and the canvas air duct 3 does not leak air at the air duct interface.

[0050] Of course, in other embodiments, the canvas air duct 3 is crimped between the frame 1 and the air duct body 6 when the frame 1 is connected with the air duct body 6, and the contact surface between the canvas air duct 3 and the air duct body 6 is sealed. In this way, when the frame 1 is connected with the air duct body 6, due to the magnetic attraction between the first magnetic attraction structure on the frame 1 and the second magnetic attraction structure on the air duct body 6, the end of the canvas air duct 3 connected with the air duct body 6 is pressed between the frame 1 and the air duct body 6, the opening of the canvas air duct 3 surrounds the air outlet, the sealing layer is pressed between the inner contact surface of the canvas air duct 3 and the frame 1, and the inner contact surface of the canvas air duct 3 and the connecting surface at the air duct interface of the air duct body 6 are sealed, and the air supply pipeline formed by the switch valve piece 2 is sealed in the canvas air duct 3. In this way, when the air flows along the air duct body 6 to the air supply pipeline formed by the switch valve piece 2, the air enters the canvas air duct 3 through the air supply pipeline, then flows along the canvas air duct 3, and finally is discharged from the louvered air outlet of the room connected with the canvas air duct 3. The material of the canvas air duct 3 is softer than that of the frame 1 and the air duct body 6. When the canvas air duct 3 is pressed between the connecting surfaces of the frame 1 and the air duct interface of the air duct body 6, the canvas air duct 3 itself can also play a sealing role to avoid air leakage between the connecting surfaces of the frame 1 and the air duct interface of the air duct body 6.

[0051] Please refer to Figure 2 , Figure 5 and Figure 6In the embodiment, the air duct connecting structure further comprises a bottom plate 7, the bottom plate 7 is fixedly connected with the air duct body 6 through screws, the second magnetic attraction setting part 71 is arranged on the bottom plate 7, and the second magnetic attraction member 61 is arranged in the second magnetic attraction setting part 71. That is to say, before the house decoration, the air duct body 6 is first fixed to the ceiling, and then the bottom plate 7 is fixed to the air duct interface of the air duct body 6 through screws after the house decoration is completed. The opening around the air outlet is arranged on the bottom plate 7, and the sealing glue is arranged between the air duct body 6 and the bottom plate 7 when the bottom plate 7 is fixed to the air duct interface of the air duct body 6, and the sealing glue is used to seal the connecting surface between the bottom plate 7 and the air duct body 6. The second magnetic attraction setting part 71 is arranged on the bottom plate 7, the second magnetic attraction member 61 is arranged in the second magnetic attraction setting part 71, and the second magnetic attraction assembly is also fixed after the bottom plate 7 is connected with the air duct body 6. That is to say, after the house decoration is completed, the bottom plate 7 and the second magnetic attraction member 61 are fixedly connected at the air duct interface of the air duct body 6, and the frame 1 can be fixed to the air duct body 6 by attracting and connecting the first magnetic attraction assembly and the second magnetic attraction assembly.

[0052] Please refer to Figure 2 and Figure 6 In the embodiment, the second magnetic attraction setting part 71 protrudes from the side of the bottom plate 7 away from the air duct body 6, so that the side, at which the bottom plate 7 is connected with the air duct body 6, is a plane, which not only facilitates the connection between the bottom plate 7 and the air duct body 6, but also facilitates the sealing between the connecting surfaces at the air duct interface of the bottom plate 7 and the air duct body 6.

[0053] In the embodiment, the recess is arranged on the inner connecting surface of the inner side of the frame 1 at the position corresponding to the first magnetic attraction setting part 12, the first magnetic attraction assembly and the second magnetic attraction assembly are magnetically attracted and connected when the frame 1 is connected with the air duct body 6, and the end of the second magnetic attraction setting part 71 protruding from the bottom plate 7 extends into the recess. The recess on the inner connecting surface of the frame 1 can play a positioning role when the frame 1 is connected with the air duct body 6, so that the frame 1 is aligned with the air outlet at the air duct interface, the switch valve piece 2 can be used to close the entire air outlet when the switch valve piece 2 is closed, and the air outlet is communicated with the air supply outlet formed by the switch valve piece 2 when the switch valve piece 2 is opened.

[0054] In this embodiment, the canvas air duct 3 is crimped between the bottom plate 7 and the air duct body 6, and the contact surface with the air duct body 6 is sealed, so that the air in the air duct body 6 can only enter the canvas air duct 3 through the air supply duct formed by the switch valve piece 2. The connection mode of the canvas air duct 3 has many kinds, each of which should meet the requirements that the canvas air duct 3 makes the air flowing out of the air outlet of the air duct body 6 only enter the canvas air duct 3 through the air supply duct formed by the switch valve piece 2, and then enter the louvered air outlet of the room through the canvas air duct 3, without air leakage during air flow, and no air enters the canvas air duct 3 when the air supply duct formed by the switch valve piece 2 is closed. When the bottom plate 7 is connected with the air duct body 6, one end of the canvas air duct 3 connected with the air duct body 6 can be crimped between the air duct body 6 and the bottom plate 7, and when the bottom plate 7 is fixed with the air duct body 6 by screws, the canvas air duct 3 will also be fixed on the air duct body 6. The beneficial effect of this fixing of the canvas air duct 3 is that when the switch valve piece 2 needs to be repaired, it only needs to be removed from the air outlet in the canvas air duct 3, and during the process of removing the switch valve piece 2, the canvas air duct 3 can still be connected with the air duct body 6. This connection mode of the canvas air duct 3 makes the canvas air duct 3 fixedly connected with the air duct body 6, so that the canvas air duct 3 does not need to be removed during the repair of the switch valve piece 2, making the repair work more convenient, and the canvas air duct 3 can still be installed on the air duct body 6 when the bottom plate 7 is fixed with the air duct body 6 after the completion of the house decoration.

[0055] The air duct connection structure of the present embodiment connects the air duct assembly with the air duct body 6 through the first magnetic attraction combination and the second magnetic attraction combination, so that the air duct assembly can be installed on the air duct body 6 after the completion of the house decoration, avoiding damage to the switch valve piece 2 during the house decoration process, and during the fixing of the air duct assembly, the first magnetic attraction combination and the second magnetic attraction combination can automatically align, making the connection of the air duct assembly with the air duct body 6 more convenient, and facilitating the disassembly and assembly of the air duct assembly during the subsequent repair of the switch valve piece 2.

[0056] Embodiment Three

[0057] Please refer to Figure 7 The present embodiment discloses an air duct which adopts the air duct assembly of embodiment one, and the air duct comprises an air duct body 6 provided with at least one air outlet, and each air outlet on the air duct body 6 is connected with an air duct assembly through the air duct connection structure of embodiment two. That is to say, the air duct body 6 is provided with a plurality of air outlets, each air outlet corresponds to a room, each air outlet is connected with the louvered air outlet of the corresponding room through an air duct assembly, and the air duct assembly is connected with the air duct body 6 at each air outlet through the air duct connection structure of embodiment two.

[0058] The air duct body 6 is arranged in the corridor, the air inlet end of the air duct body 6 is connected to the air outlet of the central air conditioner, the central air conditioner sends the air into the air duct body 6 after cooling or heating, the air flows along the air duct body 6 in the air duct body 6, flows to the corresponding air outlet, if the switch valve piece 2 of the air duct assembly connected to the corresponding air outlet is in the open state, part of the air enters the canvas air duct 3 through the air supply air duct formed by the switch valve piece 2, flows along the canvas air duct 3 and enters the louvered air outlet of the corresponding room, and then flows out of the louvered air outlet, if the air outlet through which the air passes is closed by the switch valve piece 2, the air continues to flow along the air duct body 6, on the path through which the air flows, as long as the air outlet of the air duct body 6 is opened by the switch valve piece 2, the air in the air duct body 6 will pass through the air supply air duct formed by the corresponding switch valve piece 2 into the canvas air duct 3 of the corresponding air duct assembly, flow along the canvas air duct 3 and enter the louvered air outlet of the corresponding room, and then flow out of the louvered air outlet. Because the air flow and air pressure at the air outlet of the air duct body 6 close to the central air conditioner are relatively large, and the air flow and air pressure at the air outlet of the air duct body 6 far from the central air conditioner are relatively small during the air flowing along the air duct body 6, in actual use, the switch valve piece 2 adjusts the air flow into the corresponding air duct assembly by adjusting the orientation of the air supply air duct, for example, when the air demand of the rooms corresponding to the air outlets close to the central air conditioner and the air outlets far from the central air conditioner is the same and is the maximum air volume, the orientations of the air supply air ducts of the switch valve pieces 2 of the air duct assemblies of the two air outlets cannot be completely the same, the orientation of the air supply air duct formed by the switch valve piece 2 of the air duct assembly of the air outlet close to the central air conditioner should deviate from the direction of the air flowing along the air duct body 6, and the orientation of the air supply air duct formed by the switch valve piece 2 of the air duct assembly of the air outlet far from the central air conditioner should tend to be aligned with the direction of the air flowing along the air duct body 6, similarly, each room can adjust the air flow according to the needs of the occupants, when the air intake demand is large, the orientation of the air supply air duct formed by the switch valve piece 2 of the air duct body 6 corresponding to the air outlet should be close to the direction of the air flowing in the air duct body 6, when the air intake demand is small, the orientation of the air supply air duct formed by the switch valve piece 2 of the air duct body 6 corresponding to the air outlet should be deviated from the direction of the air flowing in the air duct body 6. That is, the air intake of the air duct assembly is adjusted by adjusting the orientation of the air supply air duct formed by the switch valve piece 2.

[0059] The air duct of the embodiment can guide the air in the air duct body 6 to different rooms through the air duct assembly, and the air volume of each room is adjusted by the orientation of the air supply air duct formed by the switch valve piece 2, so that the air supply volume of each room is flexibly adjustable, and the air volume balance at the air outlets at different distances from the central air conditioner position on the air duct body 6 can be ensured; the air duct assembly at each air outlet of the air duct body 6 is connected with the air duct body 6 through the air duct connecting structure, so that the air duct assembly does not have to be fixed to the ceiling with the air duct before the house is decorated, and in the subsequent maintenance process, the switch valve piece 2 can be easily disassembled from the air duct body 6 for maintenance.

[0060] Embodiment Four

[0061] Please refer to Figures 8 to 15The embodiment discloses a wind valve assembly which comprises a frame 1 and switch valve pieces 2 arranged in the frame 1, the switch valve pieces 2 are at least two pieces which are rotatably arranged in the frame 1, the switch valve pieces 2 comprise a middle shaft 21 and blade bodies 22 on both sides, the both ends of the middle shaft 21 extend out of the blade bodies 22 and are connected to the inner wall surface of the frame 1, and soft contact parts 23 are arranged on the both side end surfaces of the blade bodies 22. When the wind valve assembly needs to be opened, the middle shaft 21 of each switch valve piece 2 is driven and rotates the blade body 22, the blade body 22 of each switch valve piece 2 is parallel to each other, the blade body 22 of the two switch valve pieces 2 on the both sides of the frame 1 forms a supply air duct with the corresponding side of the frame 1, and a supply air duct is also formed between the blade bodies 22 of the two adjacent switch valve pieces 2 which are close to each other. When the wind valve assembly needs to be closed, the middle shaft 21 of each switch valve piece 2 is driven and rotates the blade body 22, the blade bodies 22 of the two adjacent switch valve pieces 2 are stacked with each other, the soft contact part 23 on the blade body 22 of the upper switch valve piece 2 is extruded by the blade body 22 of the lower switch valve piece 2, and the soft contact part 23 on the blade body 22 of the switch valve piece 2 is extruded by the blade body 22 of the upper switch valve piece 2, so that the two adjacent switch valve pieces 2 are stacked with each other and sealed, and the supply air duct is sealed. The width of the blade body 22 on each side of the middle shaft 21 of each switch valve piece 2 is L, the distance between the middle shaft 21 of the two adjacent switch valve pieces 2 is D, and L < D < 2L. When the two switch valve pieces 2 are rotated to make the blade bodies 22 tend to be in the same plane, the blade bodies 22 on the side close to each other of the two adjacent switch valve pieces 2 are stacked with each other, the blade body 22 of the upper switch valve piece 2 is extruded downwards by the blade body 22 of the lower switch valve piece 2, the blade body 22 of the lower switch valve piece 2 is also extruded upwards by the blade body 22 of the upper switch valve piece 2, the soft contact part 23 is extruded and deformed when the blade bodies 22 of the two switch valve pieces 2 are extruded, the gap between the blade bodies 22 of the two adjacent switch valve pieces 2 is sealed, the two adjacent switch valve pieces 2 are sealed, air leakage between the two adjacent switch valve pieces 2 can be avoided when the wind valve assembly is closed, and the supply air duct is sealed. In addition, the middle shaft 21 is provided with the blade body 22 and the soft contact part 23 on both sides, so that the both side edges of the frame 1 perpendicular to the axial direction of the middle shaft 21 extrude the soft contact part 23 on the blade body 22 on the corresponding side, the soft contact part 23 on the blade body 22 on the corresponding side is deformed and seals the blade body 22 and the frame 1.When the air valve assembly needs to be opened, the air supply duct can be opened by rotating the intermediate shaft 21 to slightly incline the blade body 22 connected with the intermediate shaft 21 to accommodate the thickness of the adjacent blade body 22, and each switch valve piece 2 only needs to be rotated by a small angle to fully open the air supply duct. When a room needs to be quickly cooled or heated, the switch valve piece 2 can be rotated to make the air supply duct face the direction of air flow in the air duct, so that a large amount of air can pass through the air supply duct when the air flows to the air duct interface, and the room corresponding to the air valve assembly can enter a large amount of cold air or warm air. When the temperature of the corresponding room rises or falls to a certain value, the direction of the air supply duct can be adjusted by adjusting the angle of the blade body 22 to form a certain angle between the air supply duct and the direction of air flow in the air duct, so that the air volume passing through the air supply duct can be reduced. When different rooms have different temperature requirements, the air inlet direction of the air supply duct can be adjusted by adjusting the rotation angle of the switch valve piece 2 to balance the air volume, so as to realize zoned temperature control and more accurate regulation of air supply volume.

[0062] Please refer to Figures 10 to 12 In the embodiment, the soft contact part 23 contacts the blade body 22 of the adjacent switch valve piece 2 when the air valve assembly is closed, and the material at the position where the blade body 22 is contacted is the material of the blade body 22. That is, when the air valve assembly needs to be closed, the intermediate shaft 21 is driven and rotated, and the blade body 22 rotates with the corresponding intermediate shaft 21. When the blade bodies 22 of multiple switch valve pieces 2 are rotated to approach the same plane, the adjacent blade bodies 22 begin to stack up and down, and the pressing force between the adjacent blade bodies 22 is greater. Generally, in order to ensure the strength of the switch valve piece 2, the intermediate shaft 21 and the blade body 22 are made of a metal material with high strength, and the soft contact part 23 is made of a soft material such as silicone. The soft contact part 23 contacts the blade body 22 of the adjacent switch valve piece 2 when the air valve assembly is closed, the blade body 22 with high strength presses the soft contact part 23 with softness, the soft contact part 23 deforms and seals the gap between the mutually stacked blade bodies 22.

[0063] In other embodiments, the position of the vane body 22 contacted is provided with a soft cover layer 24 which is integrally formed with the soft contact portion 23 on the corresponding vane body 22. That is, the vane body 22 is provided with a soft cover layer 24 which is integrally formed with the soft contact portion 23, when it is required to close the air valve assembly, the intermediate shaft 21 is driven and rotated, the vane body 22 rotates with the corresponding intermediate shaft 21, when the vane bodies 22 of the plurality of switch valve pieces 2 are rotated to approach to be located in the same plane, the adjacent vane bodies 22 begin to be stacked up and down, the intermediate shaft is continuously rotated, the extrusion force between the adjacent vane bodies 22 is greater, the vane body 22 extrudes the soft cover layer 24 and the soft contact portion 23 on it at the same time, the soft cover layer 24 and the soft contact portion 23 are deformed at the same time, and the adjacent two switch valve pieces 2 are tightly sealed.

[0064] In addition, since the intermediate shaft 21 and the vane body 22 are made of metal material with high strength, the metal material has good heat conductivity, when the cold air in the air duct flows through the air valve assembly, since the indoor air is higher in temperature than the air in the air duct, the cold air is easy to produce condensate water when it contacts the switch valve piece 2 made of metal material, the condensate water in the air duct is difficult to clean and will corrode the air duct, affecting the service life of the air duct, the soft cover layer 24 made of silica gel is covered on the vane body 22, since the soft cover layer 24 has poor heat conduction effect, when the cold air flows through the air valve assembly, condensate water can be avoided.

[0065] In the case of closing the air valve assembly, the free end of the soft contact portion 23 contacts the outer contour of the intermediate shaft 21 of the vane body 22 of the adjacent switch valve piece 2. The width of each vane body 22 on each side of the intermediate shaft 21 of each switch valve piece 2 is set as L, the width of the soft contact portion 23 is set as d, and the distance between the intermediate shafts 21 of the adjacent two switch valve pieces 2 is set as D, then: L < D < L + d, so that when the two switch valve pieces 2 are rotated to make the vane bodies 22 thereof approach to be located in the same plane, the vane bodies 22 on the side close to each other of the adjacent two switch valve pieces 2 are stacked up with each other, the free end of the soft contact portion 23 contacts the outer contour of the intermediate shaft 21 of the vane body 22 of the adjacent switch valve piece 2, the intermediate shaft 21 can extrude and deform the soft contact portion 23, and the vane bodies 22 of the adjacent two switch valve pieces 2 are tightly sealed.

[0066] In the embodiment, an adhesive layer is arranged between the outer surface of the vane body 22 and the soft cover layer 24. The adhesive layer is used to adhere the soft cover layer 24 to the vane body 22, so that the soft cover layer 24 is firmly connected to the vane body 22, and the soft cover layer 24 is prevented from being separated from the vane body 22 during long-term opening and closing of the air valve assembly, thereby affecting the service life of the air valve assembly. In actual use, the upper and lower sides of the portion of the vane body 22 away from the intermediate shaft 21 are provided with stepped surfaces, and the thickness of the stepped surfaces is adapted to the thickness of the soft cover layer 24 covered on the upper and lower sides. When the soft cover layer 24 is covered on the stepped surfaces by the adhesive layer, the surface of the soft cover layer 24 can be flush with the surface of the portion of the vane body 22 close to the intermediate shaft 21.

[0067] Please refer to Figure 9 In actual use, the soft cover layer 24 on the upper and lower sides of the vane body 22 and the soft contact portion 23 are a silicone strip of integral structure, the portion of the silicone strip connected to the vane body 22 is provided with a mounting groove corresponding to the stepped surface, the soft contact portion 23 is arranged at the end of the silicone body away from the vane body 22, and the thickness of the soft contact portion 23 is less than the thickness of the portion of the silicone body as the soft cover layer 24. When the silicone body is mounted on the vane body 22, the adhesive layer is usually first arranged on the stepped surface of the vane body 22, and then the portion of the vane body 22 provided with the stepped surface is inserted into the mounting groove of the silicone body, and the depth of the mounting groove is adapted to the width of the stepped surface. Further, the portion of the vane body 22 provided with the stepped surface is usually provided with a glue covering hole 221, and the inner wall of the mounting groove of the silicone body is provided with a protrusion. When the silicone body is connected to the vane body 22, the stepped surface is inserted into the mounting groove of the silicone body, and the protrusion on the inner wall of the mounting groove is pressed into the glue covering hole 221 on the stepped surface, so as to further increase the firmness of the connection between the silicone body and the vane body 22.

[0068] Please refer to Figure 9 and Figure 12 In the embodiment, the cross section of the switch valve piece 2 perpendicular to the axis of the intermediate shaft 21 is circular, the intermediate shaft 21 is connected to the bodies of the vane bodies 22 on both sides, and the soft cover layer 24 covering the vane bodies 22 is provided with the soft contact portions 23 protruding on both sides of the vane bodies 22. That is, the axis of the intermediate shaft 21 coincides with the center line of the body of the vane body 22 along the direction of the intermediate shaft 21, the intermediate shaft 21 penetrates through both ends of the vane body 22 and protrudes from the upper and lower surfaces of the vane body 22. When the air valve assembly is closed, the portion of the intermediate shaft 21 protruding from the vane body 22 presses the soft contact portions 23 and causes the soft contact portions 23 to deform, so as to seal the gap between the vane bodies 22 of the two switch valve pieces 2 stacked with each other.

[0069] Please refer to Figure 9 and Figure 11In this embodiment, soft extensions 25 are formed on both sides of the axial direction of the blade body 22, which extend towards the inner wall of the frame 1, for reducing the gap between the switch valve piece 2 and the inner wall of the frame 1. The edges of the frame 1 perpendicular to the two sides of the intermediate shaft 21 are sealed by the soft contact portions 23 on the corresponding side of the switch valve piece 2, so that when the air valve assembly is closed, if there is no sealing between the two sides of the axial direction of the blade body 22 and the corresponding inner wall of the frame 1, the switch valve piece 2 cannot completely seal the air duct interface, so in this embodiment, soft extensions 25 are formed on both sides of the axial direction of the blade body 22, which extend towards the inner wall of the frame 1, and when the air valve assembly is closed, the soft extensions 25 are pressed against the inner wall of the frame 1 and seal the blade body 22 and the corresponding inner wall of the frame. In practical applications, the soft contact portion 23, the soft covering layer 24 and the soft extension 25 are integrally formed into a U-shaped silica gel strip, the soft covering layer 24 is U-shaped and located on the inner side of the U-shaped silica gel strip, the soft contact portion 23 is located on the outer side of the soft covering layer 24 along the length direction of the U-shaped silica gel strip, and the soft extension 25 is located on the outer side of the soft covering layer 24 along the width direction of the U-shaped silica gel strip. The side of the soft covering layer 24 connected with the stepped surface of the blade body 22 is provided with a mounting groove, and the stepped surface of the outer contour of the blade body 22 is inserted into the mounting groove and connected with the U-shaped silica gel strip. When the air valve assembly is closed, the blade body 22 of each switch valve piece 2 is overlapped with the blade body 22 of the adjacent switch valve piece 2, and the part where the blade body 22 of the adjacent two switch valve pieces 2 contact and press each other is provided with the soft covering layer 24. The intermediate shaft 21 presses the soft contact portion 23, the inner wall of the frame 1 parallel to the intermediate shaft 21 presses the soft contact portion 23 on the corresponding blade body 22, and the inner wall of the frame 1 perpendicular to the intermediate shaft 21 presses the soft extension 25 on the blade body 22 of the plurality of switch valve pieces 2, so as to seal between the switch valve piece 2 and the frame 1 and between the adjacent switch valve pieces 2.

[0070] In practical use, it is preferred that the soft covering layer 24 covers the entire blade body 22 and also wraps the part of the intermediate shaft 21 protruding above the blade body 22, so that when the cold air is transported in the air duct and the cold air flows through the air valve assembly, the cold air will not be preheated to produce condensate water due to the poor heat conduction effect of the soft covering layer 24.

[0071] Please refer to Figure 8In the embodiment, the frame 1 is provided with a containing cavity on one side, the containing cavity is provided with a PCB board 4, a driving motor 5 and a sensor assembly, the driving motor 5 and the sensor assembly are electrically connected with the PCB board 4, and the driving motor 5 is used for driving the switch valve piece 2. In specific application, the frame 1 includes two plastic side plates 1a and two box-shaped metal parts 1b, the two plastic side plates 1a are arranged along a direction parallel to the middle shaft 21, the two box-shaped metal parts 1b are connected between the two ends of the plastic side plates 1a along a direction perpendicular to the middle shaft 21 and together with the two plastic side plates 1a to form the frame 1, the two box-shaped metal parts 1b are provided with bearings, the middle shaft 21 of the switch valve piece 2 is rotationally connected in the bearings, and the box-shaped metal part 1b on one side is further provided with a synchronous shaft, the middle shaft 21 of each switch valve piece 2 is connected with the synchronous shaft, and the synchronous shaft is connected with a driving end of the driving motor 5, when the driving motor 5 drives the synchronous shaft, the synchronous shaft drives the middle shaft 21 of all the switch valve pieces 2 to rotate synchronously, so that the air valve assembly is opened or closed. The sensor assembly is used for receiving instructions and transmitting signals to the PCB board 4, the PCB board 4 outputs corresponding control instructions to the driving motor 5 according to the received signals, in actual application, the sensor assembly is connected with a signal of a remote controller controlled by a user externally, the user sends instructions to the sensor assembly by controlling the remote controller, the instructions include opening or closing the air valve assembly, the air supply amount of an air supply air duct formed by the switch valve piece 2 of the air valve assembly and the like, after the sensor assembly receives the instructions, the sensor assembly sends the instructions to the PCB board 4 in the form of signals, and the PCB board 4 starts the driving motor 5 according to the received signals.

[0072] The air valve assembly of the embodiment can seal the air duct interface even if there are multiple air leakage boundaries by arranging the soft covering layer 24 and the soft contact part 23 on the blade body 22, and the heat conduction performance of the switch valve piece 2 is reduced due to the existence of the soft covering layer 24, so that condensate water cannot be generated at the switch valve piece 2 when cold air flows through the air valve assembly.

[0073] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement or improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A wind channel connecting structure for connecting a wind channel assembly which is convenient to disassemble, comprising a frame (1) and a switching valve piece (2) arranged on the frame (1), characterized in that: Further comprising an air duct body (6) and a bottom plate (7), the frame (1) has an outer surface facing the operator, and the other side of the outer surface has an inner structure for connecting the air duct; wherein the outer surface has an open state, and in the open state, at least one side of the switch valve piece (2) forms an air supply air duct, the inner structure comprises a first magnetic attraction combination composed of at least two first magnetic attraction pieces (11), the air duct body (6) is fixed with a second magnetic attraction combination composed of at least two second magnetic attraction pieces (61), and the first magnetic attraction combination is used to attract the second magnetic attraction combination arranged on the air duct when the air duct assembly is connected with the air duct body. If the first magnetic attraction combination is composed of two first magnetic attraction pieces (11), the two first magnetic attraction pieces (11) are arranged at both ends of the center line of the frame (1), so that when the two first magnetic attraction pieces (11) of the first magnetic attraction combination and the second magnetic attraction combination attract each other, the center of force coincides with the center of gravity of the frame (1); if the first magnetic attraction combination is composed of three first magnetic attraction pieces (11), the area of the triangle surrounded by the three first magnetic attraction pieces (11) is not less than 0.44 times the area surrounded by the frame (1), nor more than 0.55 times the area surrounded by the frame (1), and the center of the frame (1) is in the triangle surrounded by the three first magnetic attraction pieces (11), so that the center of the frame (1) coincides with the center of the triangle; if the first magnetic attraction combination is composed of four first magnetic attraction pieces (11), the area of the quadrilateral surrounded by the four first magnetic attraction pieces (11) is not less than 0.5 times the area surrounded by the frame (1), nor more than 1 times the area surrounded by the frame (1), and the center of the frame (1) is in the quadrilateral surrounded by the four first magnetic attraction pieces (11); The bottom plate (7) and the air duct body (6) are fixedly connected by screws, the bottom plate (7) is provided with a second magnetic attraction arrangement portion (71), and the second magnetic attraction piece (61) is arranged in the second magnetic attraction arrangement portion (71); the air duct body (6) is provided with an air duct interface, the air duct interface is provided with an air outlet communicating with the inside of the air duct body (6), the air duct body (6) is fixed to the ceiling, the bottom plate (7) is fixed to the air duct interface of the air duct body (6) by the screws, and the bottom plate (7) is provided with an opening surrounding the air outlet, and the switch valve piece (2) is installed in the air outlet.

2. The duct connection structure according to claim 1, wherein Further comprising a canvas air duct (3), the canvas air duct (3) is connected with the air duct body and the frame (1) is located in the canvas air duct (3), so that the air in the air duct can only form an air supply air duct through the switch valve piece (2) to enter the canvas air duct (3).

3. The duct connection structure according to claim 2, wherein The other side of the outer surface of the frame (1) is provided with a sealing layer, the sealing layer wraps the other side of the outer surface of the frame (1), and forms a avoiding hole at the position corresponding to the first magnetic attraction piece (11).

4. The duct connection structure according to claim 3, wherein The frame (1) is provided with a containing cavity on one side, the containing cavity is provided with a PCB board (4), a driving motor (5) and a sensor assembly, the driving motor (5) and the sensor assembly are electrically connected with the PCB board (4), and the driving motor (5) is used for driving the switch valve piece (2).

5. The duct connection structure according to claim 4, wherein The canvas air duct (3) is connected with the air duct body (6) towards the side of the operator through air nails and makes the contact surface of the canvas air duct (3) and the air duct body (6) sealed; or the canvas air duct (3) is crimped between the frame (1) and the air duct body (6) when the frame (1) is connected with the air duct body (6) and makes the contact surface of the canvas air duct (3) and the air duct body (6) sealed.

6. The duct connection structure according to claim 5, wherein The canvas air duct (3) is crimped between the bottom plate (7) and the air duct body (6), and the contact surface of the canvas air duct (3) and the air duct body (6) is sealed, so that the air in the air duct body (6) can only enter the canvas air duct (3) through the switch valve piece (2) to form an air supply air duct.

7. An air duct, characterized by: The air duct comprises an air duct body (6) provided with at least one air outlet, and each air outlet on the air duct body (6) is connected with the air duct through the air duct connecting structure according to any one of claims 1-6.

Images