Modular air duct system for central air conditioning

Abstract

The utility model discloses a kind of modularization air pipe systems of central air conditioner, it includes: partial tee, with the first caliber air inlet and the first air outlet and the second air outlet of second caliber, first caliber is greater than second caliber, the air inlet, first air outlet and second air outlet are Y-shaped distribution;Air valve, one end is connected first air outlet or second air outlet;Air outlet interface, with the other end of air valve detachably connected;Air inlet interface, air conditioner host and air inlet are directly or indirectly communicated.The utility model provides a kind of modularization air pipe systems of central air conditioner, by the combination and detachable connection mode of standardization module, the flexible assembly of air pipe system and the accurate control of air volume are realized, to simplify installation maintenance process and improve the adaptability and comfort of system.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning ventilation duct technology, and more specifically, to a modular air duct system for central air conditioning. Background Technology

[0002] A central air conditioning system typically includes components such as a main unit, ductwork, air vents, and control units. The ductwork system is used to deliver the cool or warm air output from the main unit to each room. It usually uses metal or composite material ducts, which are connected to terminal air vents via branch pipes to distribute airflow.

[0003] Existing duct systems are mostly custom-made, with their dimensions, interfaces, and installation methods requiring individual design and manufacturing based on site conditions. They lack standardization and modularity, making installation and maintenance cumbersome. Adjustments to duct dimensions or changes to air supply layout often necessitate re-customization or large-scale dismantling and modification, resulting in poor flexibility. Summary of the Invention

[0004] Existing central air conditioning duct systems are mostly custom-made, with their dimensions, interfaces, and installation methods requiring individual design and manufacturing based on site conditions. This lack of standardization and modularity makes installation and maintenance cumbersome. Adjustments to duct size or changes to the air supply layout often necessitate re-customization or large-scale dismantling and modification, resulting in poor flexibility. Furthermore, traditional systems struggle to achieve precise independent control of each air outlet, leading to uneven air distribution or energy efficiency losses.

[0005] To address the aforementioned technical problems, this utility model provides a modular air duct system for central air conditioning. Through the combination of standardized modular components and detachable connection methods, it enables flexible assembly of the air duct system and precise control of air volume, thereby simplifying the installation and maintenance process and improving the system's adaptability and comfort.

[0006] The technical solution adopted by this utility model is: to provide a modular air duct system for central air conditioning, which includes: The tee has an air inlet of a first diameter and a first air outlet and a second air outlet of a second diameter. The first diameter is larger than the second diameter. The air inlet, the first air outlet and the second air outlet are arranged in a Y-shape. An air valve, one end of which is connected to either the first air outlet or the second air outlet; The air outlet is detachably connected to the other end of the air valve. The air inlet interface connects the air conditioning unit directly or indirectly to the air inlet.

[0007] Through the above technical solution, this invention enables modular assembly of duct systems by combining standardized offset T-junction modules with detachable air valves and interfaces. Users can flexibly assemble duct units of different sizes according to actual needs, while facilitating later maintenance or adjustments to the air supply layout. Furthermore, by independently configuring air valves and air outlet interfaces for each air outlet, precise control of the airflow at each outlet can be achieved, thereby solving the problems of uneven airflow distribution and cumbersome installation and maintenance in traditional systems.

[0008] According to one embodiment of this utility model, it also includes a positive tee, which has three interfaces of the first diameter. An off-center tee can divide a main air inlet pipe into two smaller diameter outlet branch pipes, and a positive tee can divide a main air inlet pipe into two main air outlet pipes. By combining off-center and positive tees, various pipe distribution configurations can be further developed, improving the flexibility and scalability of the system layout.

[0009] According to one embodiment of this utility model, it also includes a four-way connector, which has three interfaces of the first diameter, and the remaining interfaces are plugged into the air inlet interface. Similarly, the four-way connector module can provide more airflow distribution options, realize standardized assembly of complex pipelines, and enhance the adaptability of the system.

[0010] According to one embodiment of this utility model, a connecting pipe is also included, through which the air inlet of the offset tee is connected to the air inlet interface. The use of the connecting pipe enables flexible connection between the offset tee and the air inlet interface, improves modular assembly efficiency, and reduces on-site installation errors.

[0011] According to one embodiment of this utility model, the connecting pipe has a first interface and a flange. The first interface is socket-fitted with the air inlet, and the flange is located in the middle of the connecting pipe and close to the edge of the air inlet. The flange design enhances connection stability, ensures airtightness, and facilitates quick fixing of the duct module, thereby improving system reliability.

[0012] According to one embodiment of this utility model, the connecting pipe further has a second interface, which is located on the side of the flange away from the first interface and is socketed with the air inlet interface. The configuration of the second interface ensures a stable socket between the connecting pipe and the air inlet interface, realizing reliable connection between modules and improving overall assembly efficiency.

[0013] According to one embodiment of the present invention, a cover is also included, which has a first diameter or a second diameter. The cover module can flexibly close unused interfaces, prevent air leakage, improve system sealing, and enhance safety and energy-saving effects.

[0014] According to one embodiment of the present invention, the first interface and / or the second interface are provided with a buckle, and the air inlet interface is provided with a latch corresponding to the buckle position.

[0015] According to one embodiment of the present invention, the second diameter is half the size of the first diameter. By designing the second diameter to be smaller, it can effectively adapt to the narrow installation space in the roof or mezzanine, so that the duct can be smoothly arranged and connected in the limited space, avoiding the problems of bending, blockage or reduced ventilation efficiency caused by limited installation space.

[0016] According to one embodiment of the present invention, the inner diameter of the first aperture ranges from 18 to 21 cm, 36 to 38 cm, or 54 to 56 cm, and can be flexibly selected according to the scale, air volume requirements and installation environment of different ventilation systems, so as to meet the ventilation requirements of different scenarios such as residential buildings, small shops and large factories.

[0017] Furthermore, according to one embodiment of the present invention, the inner diameter of the first duct can be specifically set to 20cm, 37cm or 55cm. This size combination is the optimal solution determined by comprehensively considering factors such as the cross-sectional area of ​​the duct, ventilation volume, wind speed and installation structure. It can reduce wind resistance loss and simplify installation operation while maintaining good ventilation efficiency, and ensure that the entire ventilation system operates stably and reliably. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the combined state of the duct system in the embodiment of this utility model. Figure 1 .

[0020] Figure 2 This is a top view of the offset tee in an embodiment of this utility model.

[0021] Figure 3 This is a perspective view of the offset tee in the embodiment of this utility model.

[0022] Figure 4 This is a perspective view of the air valve in an embodiment of this utility model.

[0023] Figure 5 This is the combined state of the duct system in the embodiment of this utility model. Figure 2 .

[0024] Figure 6 This is a three-dimensional view of the duct system assembly state in an embodiment of this utility model.

[0025] Figure 7This is a perspective view of the positive tee in the embodiment of this utility model.

[0026] Figure 8 This is a perspective view of the air inlet interface in an embodiment of this utility model.

[0027] Figure 9 This is a perspective view of the air outlet interface in an embodiment of this utility model.

[0028] Figure 10 This is the combined state of the duct system in the embodiment of this utility model. Figure 3 .

[0029] Figure 11 This is the combined state of the duct system in the embodiment of this utility model. Figure 4 .

[0030] Explanation of the labels in the diagram: 1. Offset tee; 2. Air valve; 3. Air outlet; 4. Connecting pipe; 5. Air inlet; 6. Straight tee; 7. Four-way valve; 11. Air inlet; 12. First air outlet; 13. Second air outlet; 11a. Checkpoint; 21. Outer frame; 22. Valve plate; 23. Gear; 21a. Limiting part; 22a. Rotating shaft; 41. First interface; 42. Second interface; 43. Flange; 44. Snap fastener. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Example

[0032] like Figure 1-11As shown, this embodiment discloses a modular air duct system for central air conditioning, including a tee joint 1, a damper 2, an air outlet 3, and an air inlet 5. The tee joint 1 has an air inlet 11 of a first diameter and a first air outlet 12 and a second air outlet 13 of a second diameter. The first diameter is larger than the second diameter, and the air inlet 11, the first air outlet 12, and the second air outlet 13 are arranged in a Y-shape. The tee joint 1 is used to split the airflow from the air inlet into two directions to adapt to the subsequent duct layout. The damper 2 is located at one end of the first air outlet 12 or the second air outlet 13 and is used to adjust the airflow of the corresponding channel. The damper 2 can automatically adjust the airflow by installing a motor. The air outlet 3 is detachably connected to the other end of the damper 2, thereby enabling flexible installation of different air supply units. The air inlet 5 is used to directly or indirectly connect to the air conditioning unit, allowing the cold or warm air output by the air conditioning unit to smoothly enter the air inlet 11 of the tee joint 1.

[0033] Furthermore, combined Figure 4 As shown, the damper includes a rectangular outer frame 21 with a second diameter. The outer frame 21 serves as the supporting body of the valve and defines the boundary of the airflow channel. A pair of valve plates 22 are rotatably mounted inside the outer frame 21. The two valve plates 22 are symmetrically arranged around the center of the outer frame 21 and are used to control the opening and closing of the airflow channel. Both ends of each valve plate 22 are rotatably connected to the outer frame 21 via a pivot 22a to ensure stable rotation of the valve plate 22 when opening or closing.

[0034] At least one end of the valve plate 22 is equipped with a gear 23, which is coaxially arranged with the corresponding rotating shaft 22a to achieve synchronous linkage between the valve plates 22. The gears 23 on the two valve plates 22 mesh with each other. When one valve plate 22 rotates under the action of driving force, the other valve plate 22 can achieve synchronous rotation in the opposite direction under the action of meshing transmission, thereby ensuring that the opening angle of the air duct is consistent and improving the balance and reliability of air volume regulation.

[0035] A limiting part 21a is protruding on the inner wall of the outer frame 21. The limiting part 21a is used to limit the rotation angle of the valve plate 22 and provide sealing support when the valve plate 22 is closed. When the two valve plates 22 are rotated to the closed position, the edge of the valve plate 22 abuts against the limiting part 21a to form a sealing structure, which can effectively block the air duct inside the outer frame 21 and prevent air backflow or air leakage.

[0036] Furthermore, when airflow needs to be adjusted, simply rotating one valve plate 22 will cause the other valve plate 22 to open and close synchronously under the action of gear 23, thus achieving bidirectional symmetrical opening of the air duct. This structure not only simplifies the adjustment operation but also improves the stability and airtightness of the valve action, making it suitable for various ventilation systems of different specifications.

[0037] Furthermore, combined Figure 5-6 As shown, the modular duct system for central air conditioning also includes a tee joint 6. The tee joint 6 has three interfaces of the first diameter, evenly distributed in three directions, enabling a single air inlet main pipe to simultaneously branch into two air outlet main pipes, adapting to the air supply needs of different directions within the room. By combining the tee joint 6 with the offset tee joint 1, multiple air supply paths can be flexibly formed, improving the system's layout flexibility and scalability.

[0038] Furthermore, combined Figure 10 As shown, the central air conditioning modular duct system also includes a four-way connector 7. The four-way connector 7 has three first-diameter interfaces and one additional interface, which engages with the air inlet interface 5 via a plug-in connection. The four-way connector 7 allows airflow to be further dispersed in multiple directions, making it particularly suitable for complex spaces requiring multi-point air supply. The presence of the four-way connector 7 enables the system to meet diverse airflow distribution requirements through modular combinations.

[0039] Furthermore, combined Figure 4 As shown, when airflow needs adjustment, simply rotating one valve plate will cause the other valve plate to open and close synchronously via gear transmission, thus achieving bidirectional symmetrical opening of the air duct. This structure not only simplifies the adjustment operation but also improves the stability and airtightness of the valve action, making it suitable for various ventilation systems of different specifications. Furthermore, combined with... Figure 1 As shown, the modular duct system for central air conditioning also includes a connecting pipe 4, which is used to connect the offset tee 1 to the air inlet interface 5. The air inlet 11 of the offset tee 1 is connected to the air inlet interface 5 through the connecting pipe 4, thereby ensuring the continuity of the airflow path. The connecting pipe 4 not only makes the overall assembly more flexible, but also facilitates adjustments on the construction site, reducing installation errors caused by dimensional deviations.

[0040] Furthermore, the connecting pipe 4 has a first interface 41 and a flange 43. The first interface 41 is connected to the air inlet 11 of the offset tee 1 using a socket joint to ensure a firm connection. The flange 43 is located in the middle of the connecting pipe 4 and is close to the edge of the air inlet 11 to enhance the stability and sealing of the overall structure, while also facilitating the fixed installation of the pipeline and preventing airflow leakage.

[0041] Furthermore, the connecting pipe 4 also includes a second interface 42, which is located on the side of the flange 43 away from the first interface 41. The second interface 42 is connected to the air inlet interface 5 by a socket joint, thereby achieving a stable connection between the air inlet interface 5 and the offset tee 1. The first interface 41 and the second interface 42 are provided with buckles 44, and the air inlet interface 5 is provided with a locking slot 11a corresponding to the buckle 44.

[0042] Furthermore, the central air conditioning modular duct system also includes a cover (not shown in the figure), which may have a first diameter or a second diameter, for sealing off some interfaces when they are not in use.

[0043] like Figure 1 As shown in the figure, this is the combined configuration of the duct system. Figure 1 It includes an air inlet 5, a connecting pipe 4, and a deflecting tee 1. The first air outlet 12 and the second air outlet 13 of the deflecting tee 1 are respectively connected to an air valve 2 and an air outlet 3. That is, the first air outlet 12 is connected to the air outlet 3 through the air valve 2, and the second air outlet 13 is connected to the other air outlet 3 through another air valve 2, so as to achieve the effect of one outlet for two air supply.

[0044] like Figure 5-6 As shown in the figure, this is a combined state. Figure 2 It includes an air inlet 5, a positive tee 6, two negative tee 1, four air valves 2, and four air outlets 3. One port of the positive tee 6 is connected to the air inlet 5, and the remaining two ports are connected to one negative tee 1 respectively. The first air outlet 12 and the second air outlet 13 of each negative tee 1 are connected to one air valve 2 and one air outlet 3 respectively, thereby achieving a one-to-four air supply effect.

[0045] like Figure 10 As shown in the figure, this is a combined state. Figure 3 It includes an air inlet 5, a four-way valve 7, three offset tees 1, six air valves 2, and six air outlets 3. The air inlet 5 is connected to one port of the four-way valve 7, and the remaining three ports of the four-way valve 7 are each connected to an offset tee 1. The first air outlet 12 and the second air outlet 13 of each offset tee 1 are respectively connected to an air valve 2 and an air outlet 3, thereby achieving a one-to-six air supply effect.

[0046] like Figure 11 As shown in the diagram, the system consists of an air inlet 5, a four-way valve 7, a straight tee valve 6, four offset tee valves 1, eight dampers 2, and eight air outlets 3. The air inlet 5 connects to one port of the four-way valve 7, the straight tee valve 6 connects to one port of the four-way valve 7, and the remaining two ports of the four-way valve 7 connect to one offset tee valve 1. The first air outlet 12 and the second air outlet 13 of each offset tee valve 1 connect to one damper 2 and one air outlet 3, respectively. Similarly, the remaining two ports of the straight tee valve 6 connect to one offset tee valve 1, and the first air outlet 12 and the second air outlet 13 of each offset tee valve 1 connect to one damper 2 and one air outlet 3, thus achieving a one-to-eight airflow output.

[0047] As can be seen from the above embodiments, the present invention, through the flexible combination of the offset tee 1, the positive tee 6 and the four-way 7, can be assembled into a pipeline system with different air outlet numbers according to actual needs, and combined with the air valve 2 to achieve precise air volume control, greatly improving the flexibility and applicability of the central air conditioning system in terms of air distribution and control.

[0048] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular air duct system for central air conditioning, characterized in that, include: The tee is a Y-shaped tee with an air inlet (11) of a first diameter and a first air outlet (12) and a second air outlet (13) of a second diameter. The first diameter is larger than the second diameter. The air inlet (11), the first air outlet (12) and the second air outlet (13) are distributed in a Y shape. Air valve (2), one end of which is connected to the first air outlet (12) or the second air outlet (13); An air outlet (3) is detachably connected to the other end of the air valve (2); The air inlet interface (5) connects the air conditioning unit directly or indirectly to the air inlet (11).

2. A modular air duct system for central air conditioning according to claim 1, characterized in that: It also includes a tee (6) having three first-caliber interfaces.

3. A modular air duct system for central air conditioning according to claim 1, characterized in that: It also includes a four-way connector (7), which has three first-caliber interfaces and the remaining interfaces are plugged into the air inlet interface (5).

4. A modular air duct system for central air conditioning according to claim 1, characterized in that: It also includes a connecting pipe (4), through which the air inlet (11) of the offset tee (1) is connected to the air inlet interface (5).

5. A modular air duct system for central air conditioning according to claim 4, characterized in that: The connecting pipe (4) has a first interface (41) and a flange (43). The first interface (41) is fitted with the air inlet (11). The flange (43) is located in the middle of the connecting pipe (4) and is close to the edge of the air inlet (11).

6. A modular air duct system for central air conditioning according to claim 5, characterized in that: The connecting pipe (4) also has a second interface (42), which is located on the side of the flange (43) away from the first interface (41), and the second interface (42) is in a socket fit with the air inlet interface (5).

7. A modular air duct system for central air conditioning according to claim 6, characterized in that: The first interface (41) and / or the second interface (42) are provided with a buckle (44), and the air inlet interface (5) is provided with a slot (11a) at the position corresponding to the buckle (44).

8. A modular air duct system for central air conditioning according to claim 1, characterized in that: It also includes caps with a first or second diameter.

9. A modular air duct system for central air conditioning according to claim 1, characterized in that: The second caliber is half the first caliber; or The inner diameter of the first aperture is 18-21cm, 36-38cm, or 54-56cm.

10. A modular air duct system for central air conditioning according to claim 9, characterized in that: The inner diameter of the first aperture is 20cm, 37cm or 55cm.

Images