Prefabricated fresh air supply pipe fitting and prefabricated fresh air supply pipeline

Abstract

The utility model discloses an assembled fresh air supply pipe fitting and assembled fresh air supply pipeline, and the assembled fresh air supply pipe fitting comprises: a pipeline main body, which is provided with a supply air passage, an air inlet and an air outlet; a heat preservation layer, which is sleeved on the outer side of the pipeline main body; and a plug-in part, which is arranged on the pipeline main body and located at the air inlet and / or the air outlet of the supply air passage; wherein when two assembled fresh air supply pipe fittings arranged adjacently are in a plug-in state through the plug-in parts matched with each other, the end faces of the heat preservation layers close to each other are arranged in an axial opposite mode. The pipe fitting has the functions of air supply, heat preservation and assembly, and when the pipeline is constructed on site, the pipeline laying and construction can be efficiently completed by only quickly plugging and assembling the pipe fitting through the matched plug-in parts, the pipeline laying, heat preservation layer wrapping and pipeline installation are realized in one step, the construction period is shortened, the fresh air system is facilitated to be popularized, and the development strategy of the country for the assembly and quick installation of buildings is actively responded.

Description

Technical Field

[0001] This utility model relates to the field of fresh air systems, and further to prefabricated fresh air supply pipe fittings and prefabricated fresh air supply pipelines. Background Technology

[0002] Many projects and residents in the market have a demand for fresh air systems. To meet the need for efficient airflow organization, floor-mounted air supply is often used, making the installation of floor-mounted fresh air supply ducts essential. Existing floor-mounted air supply ducts (main ducts and branch ducts, etc.) typically use metal or plastic ducts, which are then insulated. Holes need to be drilled in the main duct before connecting the branch ducts, which in turn connect to floor-mounted air outlets. This method requires significant manpower for on-site duct fabrication and installation, as well as insulation cutting and bonding, making it difficult to effectively guarantee the construction quality and finished product protection of the on-site air supply ductwork.

[0003] As people's demands for quality of life increase, there is growing acceptance of floor-mounted fresh air supply methods. However, the current reality that the implementation of floor-mounted air supply ducts relies entirely on manual labor is no longer sufficient to promote the widespread application of floor-mounted air supply ducts. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to provide prefabricated fresh air supply pipe fittings and prefabricated fresh air supply pipelines, which combine the excellent characteristics of constant temperature air supply under existing construction conditions. On-site construction only requires direct insertion of the prefabricated prefabricated fresh air supply pipe fittings to complete the pipeline laying, resulting in high construction efficiency, shortening project construction time and costs, facilitating the promotion of fresh air systems and adapting to the laying needs of different building areas. It also facilitates personalized prefabrication to meet the air supply needs of different residents, and actively responds to the national development strategy of prefabrication and rapid installation in construction.

[0005] To achieve the above objectives, this utility model provides a prefabricated fresh air supply duct, comprising:

[0006] The main body of the pipeline is equipped with an air supply channel, an air inlet, and an air outlet;

[0007] An insulation layer, which is fitted over the outside of the main pipe body; and,

[0008] The connector is located on the main body of the pipeline and at the air inlet and / or air outlet of the air supply channel;

[0009] When two adjacent prefabricated fresh air supply ducts are in the plugged state through a matching plug, their insulation layers are axially opposite each other at their close end faces.

[0010] In this embodiment, the prefabricated fresh air supply duct has the functions of air supply, insulation and assembly. Therefore, when constructing the fresh air duct, it can be quickly connected and assembled through the matching plug-in parts to efficiently complete the duct laying and construction. The duct laying, insulation layer wrapping and duct installation are completed in one step, which greatly shortens the construction period. It is conducive to the promotion of fresh air system and adapts to the laying needs of different building areas. It is also easy to carry out personalized prefabrication to meet the air supply needs of different residents. It also actively responds to the national development strategy of prefabrication and rapid installation in construction.

[0011] In some embodiments, the insertion portion is at least one of a threaded portion having internal or external threads, a snap-fit ​​portion having a groove or a protrusion, or an abutment portion having a radial protrusion to achieve axial contact.

[0012] In this embodiment, the quick-connection of two adjacent prefabricated fresh air supply ducts can be achieved through internal and external threaded connections, concave and convex fits, or axial abutment, with various implementation methods, increasing the diversity and coordination of the product.

[0013] In some implementations, when two adjacent prefabricated fresh air supply ducts are in a plug-in state, their insulation layers have their close end faces axially fitted together.

[0014] In this embodiment, when two adjacent prefabricated fresh air supply pipes are plugged in, their insulation layers are axially fitted, thus achieving axial continuity of the insulation layer and excellent insulation performance.

[0015] In some implementations, when two adjacent prefabricated fresh air supply ducts are in a plug-in state, the axial distance between the end faces of their insulation layers that are close to each other is no more than 50mm.

[0016] In this embodiment, the spacing constraints between the insulation layers take into account the compatibility of the fabrication and construction errors of this prefabricated fresh air supply duct, while also ensuring constant temperature air supply.

[0017] In some implementations, an insulation protective layer is fitted over the outside of the insulation layer.

[0018] In this embodiment, the thermal insulation protective layer protects the thermal insulation layer, extending its service life and thus prolonging the service life of this utility model.

[0019] In some embodiments, the insertion part is one of an insertion part and a sleeve part that fit together; wherein, the insertion part is provided in the pipe body of one of the adjacent and connected prefabricated fresh air supply pipe fittings, and the sleeve part is provided in the pipe body of the other adjacent and connected prefabricated fresh air supply pipe fittings; the insertion part axially protrudes from the end face of the insulation layer of the prefabricated fresh air supply pipe fitting in which it is located, and the sleeve part axially flush with the end face of the insulation layer of the prefabricated fresh air supply pipe fitting in which it is located; when the two adjacent prefabricated fresh air supply pipe fittings are in the insertion state, the insertion part is sleeved inside the sleeve part, so that the end faces of the insulation layers of the two fittings are axially fitted together.

[0020] In this embodiment, the insertion part and the sleeve part are connected by inner and outer sleeve in the radial direction. At the same time, when two adjacent prefabricated fresh air supply pipes are in the insertion state, their insulation layers are axially fitted, realizing the axial continuity of the insulation layer and integrated assembly, thus ensuring the reliability of constant temperature air supply.

[0021] In some embodiments, the prefabricated fresh air supply duct is at least one of the following: insulated composite main pipe, insulated composite main pipe quick-connect fitting, insulated composite distributor, insulated composite branch pipe, insulated composite branch pipe quick-connect fitting, and insulated composite static pressure box.

[0022] In this embodiment, at least one of the components in the air supply duct of the fresh air system that enables air supply is prefabricated to achieve efficient construction. The more prefabricated fresh air supply duct components there are in the fresh air system's air supply duct, the higher its assembly efficiency.

[0023] In some embodiments, the thermal insulation composite main pipes are connected by quick-connect fittings, and the plug-in portions of the thermal insulation composite main pipes and the quick-connect fittings are compatible.

[0024] In this embodiment, the thermal insulation composite main pipes are connected by quick-connect fittings. By combining different lengths during assembly, the structure of this utility model is more reliable and robust, and easier to construct on-site, thus increasing the coordination and flexibility of its installation.

[0025] In some implementations, the connector of the thermal insulation composite main pipe is adapted to the connector of the thermal insulation composite distributor.

[0026] In this embodiment, prefabricated fresh air supply ducts with different functions are also installed by plugging in the connectors, which makes the construction more efficient.

[0027] In some implementations, the plug-in portion of the thermal insulation composite distributor is compatible with the plug-in portion of the thermal insulation composite branch pipe.

[0028] In this embodiment, prefabricated fresh air supply ducts with different functions are also installed by plugging in the connectors, which makes the construction more efficient.

[0029] The redistribution of fresh air is achieved through the thermal insulation composite distributor, thereby realizing large-area uniform and constant temperature air supply, improving indoor air supply comfort and balance, and improving the quality of the living environment.

[0030] In some implementations, the thermal insulation composite branch pipes are connected by quick-connect fittings, and the insertion parts of the thermal insulation composite branch pipes and the quick-connect fittings are compatible.

[0031] In this embodiment, the thermal insulation composite branch pipes are connected by quick-connect fittings. By combining different lengths during assembly, the structure of this utility model is more reliable and robust, and easier to construct on-site, thus increasing the coordination and flexibility of its installation.

[0032] In some implementations, the insertion part of the thermal insulation composite branch pipe is compatible with the insertion part of the thermal insulation composite static pressure box.

[0033] In this embodiment, constant temperature and quiet air supply are achieved throughout the process, improving the comfort of the living environment.

[0034] In some implementations, the inner diameter of the thermal insulation composite main pipe is larger than the inner diameter of the thermal insulation composite branch pipe.

[0035] In this embodiment, a large-diameter pipe is used for air supply, while a small-diameter pipe is used for air distribution. This saves materials and makes the air supply pipeline easier to construct. The small-diameter pipe provides faster and more timely air supply with a more sensitive response speed.

[0036] In some implementations, the air inlet of the thermal insulation composite distributor is connected to the thermal insulation composite main pipe; the air outlet of the thermal insulation composite distributor is connected to the thermal insulation composite branch pipe; and the number of air outlets of the thermal insulation composite distributor exceeds the number of its air inlets.

[0037] In this embodiment, the thermal insulation composite distributor has fewer air intake paths and more branch distribution paths, which enables air delivery to a larger area through more paths, resulting in more balanced and smoother air delivery, improved air delivery comfort, and thus improved quality of the living environment.

[0038] In some implementations, the thermal insulation composite static pressure box is connected to at least one thermal insulation composite branch pipe.

[0039] In this embodiment, the thermal insulation composite static pressure box is connected to multiple thermal insulation composite branch pipes, which can flexibly adjust the air volume to meet the different fresh air needs of residents.

[0040] In some embodiments, the thermal insulation composite main pipe quick-connect fitting, thermal insulation composite distributor, thermal insulation composite branch pipe quick-connect fitting, and thermal insulation composite static pressure box are only provided with an insertion part; the thermal insulation composite main pipe and thermal insulation composite branch pipe are only provided with a sleeve part.

[0041] In this embodiment, the air supply pipe uses a sleeve part, and the connecting or distributing parts use an insert part. This assembly method is simple and quick, as well as airtight and secure, convenient for construction, and not easily deformed or damaged.

[0042] This utility model also provides a prefabricated fresh air supply duct, including any of the prefabricated fresh air supply ducts described above.

[0043] In this embodiment, the prefabricated fresh air supply duct has the functions of air supply, insulation and assembly. Therefore, when constructing the fresh air duct, it can be quickly connected and assembled through the matching plug-in parts to efficiently complete the duct laying and construction. The duct laying, insulation layer wrapping and duct installation are completed in one step, which greatly shortens the construction period. It is conducive to the promotion of fresh air system and adapts to the laying needs of different building areas. It is also easy to carry out personalized prefabrication to meet the air supply needs of different residents. It also actively responds to the national development strategy of prefabrication and rapid installation in construction.

[0044] In some embodiments, the prefabricated fresh air supply ductwork includes an insulated composite main pipe, an insulated composite distributor, an insulated composite branch pipe, and an insulated composite plenum chamber. The air outlet of the insulated composite main pipe is connected to the air inlet of the insulated composite distributor through a matching plug-in portion, the air outlet of the insulated composite distributor is connected to the air inlet of the insulated composite branch pipe through a matching plug-in portion, the air outlet of the insulated composite branch pipe is connected to the air inlet of the insulated composite plenum chamber through a matching plug-in portion, and the air outlet of the insulated composite plenum chamber is used to supply air to the room.

[0045] In this embodiment, the prefabricated fresh air supply duct is made of prefabricated fresh air supply pipe fittings. First, the air is supplied by the insulated composite main pipe. Then, the insulated composite distributor distributes the air supply branches through the insulated composite branch pipes according to the air supply demand and air supply area. Finally, the insulated composite static pressure box realizes silent air supply, which meets the air supply needs of different areas, apartment types and residents. The fresh air system can also be planned in advance according to the personalized needs of residents.

[0046] In some embodiments, the prefabricated fresh air supply duct is also a quick-connect fitting for an insulated composite main pipe, with the insulated composite main pipes connected to each other via quick-connect fittings, and the plug-in portion of the insulated composite main pipe and the plug-in portion of the quick-connect fitting being compatible.

[0047] In this embodiment, the thermal insulation composite main pipes are connected by quick-connect fittings. By combining different lengths during assembly, the structure of this utility model is more reliable and robust, and easier to construct on-site, thus increasing the coordination and flexibility of its installation.

[0048] In some embodiments, the prefabricated fresh air supply duct is also a quick-connect fitting for insulated composite branch pipes, with the insulated composite branch pipes connected to each other through quick-connect fittings, and the insertion parts of the insulated composite branch pipes and the insertion parts of the quick-connect fittings being compatible.

[0049] In this embodiment, the thermal insulation composite branch pipes are connected by quick-connect fittings. By combining different lengths during assembly, the structure of this utility model is more reliable and robust, and easier to construct on-site, thus increasing the coordination and flexibility of its installation.

[0050] In some implementations, a sealing layer is provided at the joints between the prefabricated fresh air supply ducts.

[0051] In this embodiment, the joint is further sealed by a sealing layer to prevent air leakage and ensure the continuity of the insulation layer, thereby improving the quality of constant temperature air supply.

[0052] In some implementations, prefabricated fresh air supply ducts are laid on the backfill layer, which is then laid on the floor slab, and the backfill layer is covered with floor veneer panels.

[0053] In this embodiment, the prefabricated fresh air supply duct is buried in the backfill layer, which does not occupy the residents' living space, does not affect the aesthetics of the living space, and can improve the quality of the residents' living environment.

[0054] Compared with the prior art, the prefabricated fresh air supply duct and prefabricated fresh air supply pipeline provided by this utility model have the following beneficial effects:

[0055] During on-site construction, the prefabricated fresh air supply ducts can be directly plugged in to complete the pipeline laying, which is highly efficient, shortens the project construction time and cost, facilitates the promotion of fresh air systems and adapts to the laying needs of different building areas, and is also easy to customize to meet the air supply needs of different residents. It actively responds to the national development strategy of prefabrication and rapid installation in construction. Moreover, since the prefabricated fresh air supply ducts themselves have both air supply and heat preservation functions, during the plugging process, the end faces of the insulation layers of adjacent prefabricated fresh air supply ducts are axially opposite to each other and close to each other, which also has the excellent characteristics of constant temperature air supply under existing construction conditions. Attached Figure Description

[0056] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0057] Figure 1 This is a preferred embodiment of the prefabricated fresh air supply duct of the present utility model;

[0058] Figure 2 yes Figure 1 Enlarged view of a portion at point A;

[0059] Figure 3 This is the preferred embodiment of the thermal insulation composite main pipe of this utility model;

[0060] Figure 4 This is a preferred embodiment of the thermal insulation composite main pipe quick-connect insert of the present utility model;

[0061] Figure 5 This is a preferred embodiment of the thermal insulation composite distributor of this utility model;

[0062] Figure 6 This is a preferred embodiment of the thermal insulation composite static pressure box of this utility model;

[0063] Figure 7 This is another preferred embodiment of the prefabricated fresh air supply duct of this utility model;

[0064] Figure 8 This is another preferred embodiment of the prefabricated fresh air supply duct of the present invention.

[0065] Explanation of icon numbers:

[0066] Insulated composite main pipe 10, main pipe body 111, main pipe insulation layer 112, main pipe insulation protective layer 113, insulated composite main pipe quick-connect fitting 20, main pipe quick-connect fitting body 211, main pipe quick-connect fitting insulation layer 212, main pipe quick-connect fitting insulation protective layer 213, insulated composite distributor 30, distributor plug-in air outlet 31, distributor plug-in air inlet 32, distributor body 331, distributor insulation layer 332, distributor insulation protective layer 333, insulated composite branch pipe 40, branch pipe body 411, branch pipe insulation layer 412, branch pipe insulation protective layer 413, insulation 50. Insulated composite branch pipe quick-connect fitting, 60. Insulated composite static pressure box, 61. Static pressure air outlet, 611. Air outlet grille, 621. Static pressure box body, 622. Static pressure box insulation layer, 623. Static pressure box insulation protection layer, 63. Static pressure air inlet, 71. Male groove interface, 711. Male groove cylinder, 712. Male groove hook, 7121. Hook cone, 7122. Female groove interface, 721. Female groove cylinder, 722. Female groove groove, 7221. Groove cylinder, 7222. Groove cone, 80. Sealing layer, 91. Floor slab, 92. Backfill layer, 93. Floor decorative panel. Detailed Implementation

[0067] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0068] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0069] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0070] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0071] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0072] In one embodiment, refer to the appendix to the specification. Figures 1 to 8 This utility model provides a prefabricated fresh air supply duct, comprising: a duct body having an air supply channel, an air inlet, and an air outlet; an insulation layer sleeved on the outside of the duct body; and a plug-in portion disposed on the duct body and located at the air inlet and / or air outlet of the air supply channel; wherein, when two adjacent prefabricated fresh air supply ducts are in a plugged-in state through a matching plug-in portion, the end faces of their insulation layers that are close to each other are axially opposite each other.

[0073] In this embodiment, the insertion parts of the air inlet and outlet of the same prefabricated fresh air supply duct can be the same or similar, or different or similar; the insertion parts of different air inlets and outlets can be the same or similar, or different or similar; specifically, they should be compatible with the insertion parts of another prefabricated fresh air supply duct that it is connected to. The insertion part and the duct body can be integrally formed or have a separate structure, and can be installed by welding or screws. In practical applications, when constructing this prefabricated fresh air supply duct, it can be quickly connected and assembled through matching insertion parts to efficiently complete the laying and construction, making duct laying, insulation layer wrapping and duct installation one step, greatly shortening the construction period, which is conducive to the promotion of fresh air systems and adapts to the laying needs of different building areas. It is also convenient for personalized prefabrication to meet the air supply needs of different residents, and actively responds to the national development strategy of prefabrication and rapid installation in construction.

[0074] In some implementations, refer to the appendix to the specification. Figures 1 to 8 The insertion part is at least one of the following: a threaded part with internal or external threads, a snap-fit ​​part with grooves or protrusions, and an abutment part with radial protrusions to achieve axial contact.

[0075] In practical applications, when one of the two adjacent prefabricated fresh air supply pipe fittings has an internally threaded insertion part, the other of the two prefabricated fresh air supply pipe fittings has an externally threaded insertion part. The internal and external threads can be screwed in and out to achieve the connection, thereby enabling the insertion, assembly and disassembly of the two fittings.

[0076] When one of the two adjacent prefabricated fresh air supply ducts has a grooved snap-fit ​​part as its insertion part, the other of the two prefabricated fresh air supply ducts has a protruding snap-fit ​​part as its insertion part. By bringing them closer together axially, the groove and the protrusion can be snapped together, thereby realizing the insertion assembly of the two prefabricated fresh air supply ducts.

[0077] When one of the two adjacent prefabricated fresh air supply ducts has a radially protruding insertion part, the other of the two prefabricated fresh air supply ducts has a radially protruding snap-fit ​​insertion part. By axially approaching the two prefabricated fresh air supply ducts when the two radial protrusions are axially misaligned and relative to each other until one radial protrusion axially passes over the other radial protrusion and is axially misaligned and relative to each other, the two prefabricated fresh air supply ducts are rotated relative to each other so that the two radial protrusions are axially facing each other and axially abutting, the insertion and assembly of the two can be completed. The reverse operation can realize the disassembly of the two.

[0078] In practical applications, if the air outlet of the first prefabricated fresh air supply duct and the air inlet of the second prefabricated fresh air supply duct are connected by internal and external threads, the air outlet of the second prefabricated fresh air supply duct and the air inlet of the third prefabricated fresh air supply duct can also be connected by a convex-concave fit. Similarly, if the second prefabricated fresh air supply duct has other air outlets, they can be connected to the air inlet of the fourth prefabricated fresh air supply duct by radial protrusions. Of course, the entire prefabricated fresh air supply duct can also use the same internal and external thread fit, convex-concave fit, or radial protrusion axial abutment. The specific method depends on the actual needs, and this utility model does not impose any restrictions. Of course, in addition to the above-mentioned plug-in assembly method, the two prefabricated fresh air supply ducts can also be assembled by other methods, such as by clamp structures, which increases the diversity and coordination of the products, but all of these should fall within the protection scope of this utility model.

[0079] In some implementations, refer to the appendix to the specification. Figures 1 to 8 When two adjacent prefabricated fresh air supply ducts are in the plug-in state, their insulation layers have axially bonded end faces that are close to each other. In this embodiment, because the end faces of the insulation layers are axially bonded, the insulation layers achieve axial continuity, ensuring excellent insulation performance. It is worth noting that due to thermal expansion and contraction and the tolerance for processing and construction errors, whether the end faces of the insulation layers are bonded is considered to be bonded when the distance between them is ±10mm under room temperature and natural extension.

[0080] In some implementations, refer to the appendix to the specification. Figures 1 to 8 When two adjacent prefabricated fresh air supply ducts are in the plug-in state, the axial distance between the adjacent end faces of their insulation layers should not exceed 50mm. In this embodiment, a distance not exceeding 50mm significantly improves the error tolerance during the manufacturing, construction, and use of the prefabricated fresh air supply ducts, without affecting the constant temperature air supply performance. In practical applications, when two adjacent prefabricated fresh air supply ducts are in the plug-in state, the axial distance between the adjacent end faces of their insulation layers should not exceed 20mm. Specifically, the axial distance between the adjacent end faces of the insulation layers can be 50mm, 45mm, 40mm, 35mm, 30mm, 20mm, 10mm, 5mm, or 2mm. A larger distance results in greater error tolerance and easier processing and construction, but slightly reduced insulation performance. A smaller distance results in lower error tolerance, increased processing and construction difficulty, but slightly improved insulation performance. The optimal distance can be set based on resident requirements, experience, or experimental results; this utility model does not impose specific limitations.

[0081] In some implementations, refer to the appendix to the specification. Figures 1 to 8An insulation protective layer is fitted over the outer side of the insulation layer. In this embodiment, the insulation protective layer protects the insulation layer, extending its service life and thus prolonging the service life of this utility model.

[0082] In some implementations, refer to the appendix to the specification. Figures 1 to 8 The insertion part is one of an insert part and a sleeve part that fit together. The insert part is located in the main body of one of the adjacent prefabricated fresh air supply ducts, and the sleeve part is located in the main body of the other adjacent prefabricated fresh air supply duct. The insert part axially protrudes from the end face of the insulation layer of the prefabricated fresh air supply duct it is located on, while the sleeve part axially lies flush with the end face of the insulation layer of the prefabricated fresh air supply duct it is located on. When the two adjacent prefabricated fresh air supply ducts are in the insertion state, the insert part is fitted inside the sleeve part, causing the end faces of their respective insulation layers to axially fit together. In this embodiment, the insertion of the insert part and the sleeve part is achieved through radial inner and outer sleeve connection, simultaneously ensuring the axial fit of the insulation layers of the two adjacent prefabricated fresh air supply ducts when they are in the insertion state. This achieves axial continuity and integrated assembly of the insulation layers, ensuring the reliability of constant temperature air supply.

[0083] In some implementations, refer to the appendix to the specification. Figures 1 to 8 This prefabricated fresh air supply duct is at least one of the following: insulated composite main pipe 10, insulated composite main pipe quick-connect fitting 20, insulated composite distributor 30, insulated composite branch pipe 40, insulated composite branch pipe quick-connect fitting 50, and insulated composite static pressure box 60. In this embodiment, at least one of all the components that enable air supply in this prefabricated fresh air supply duct is prefabricated to achieve efficient construction, and the more components that are prefabricated fresh air supply ducts, the higher the assembly efficiency.

[0084] In some embodiments, the thermally insulated composite main pipes 10 are connected by quick-connect fittings 20, with the insertion portions of the main pipes 10 and 20 being compatible. In this embodiment, the thermally insulated composite main pipes 10 are connected by quick-connect fittings 20. The use of a longer thermally insulated composite main pipe 10 and a shorter thermally insulated composite main pipe quick-connect fitting 20 for assembly makes the structure of this invention more reliable, robust, and easier to install on-site, increasing the coordination and flexibility of the installation. Of course, in other embodiments, the thermally insulated composite main pipes 10 can also be assembled end-to-end using insertion portions located at their respective air inlets and outlets. Alternatively, the thermally insulated composite main pipe 10 can be a single, continuous piece.

[0085] In some embodiments, the plug-in portion of the thermal insulation composite main pipe 10 and the plug-in portion of the thermal insulation composite distributor 30 are compatible. In this embodiment, different functions of this prefabricated fresh air supply pipe fittings are also installed using plug-in portions, resulting in more efficient construction. The thermal insulation composite distributor 30 can redistribute and supply fresh air, enabling air supply in different directions or spaces, resulting in more balanced air supply and improved indoor living comfort.

[0086] In some embodiments, the plug-in portion of the thermal insulation composite distributor 30 and the plug-in portion of the thermal insulation composite branch pipe 40 are compatible. In this embodiment, the thermal insulation composite distributor 30 is used to redistribute fresh air, thereby achieving large-area uniform constant temperature air supply, improving indoor air supply comfort and balance, and improving the quality of the living environment.

[0087] In other embodiments, the thermal insulation composite main pipe 10 and the thermal insulation composite branch pipe 40 can be directly connected and assembled through the plug-in parts at their respective air inlets and outlets, without the need for a thermal insulation composite distributor 30. However, its structural strength is not as good as that of the thermal insulation composite distributor 30 for distributing air, and its air distribution balance and stability are also not as good as those of the thermal insulation composite distributor 30 for distributing air. This is because, along the air supply direction, the air volume of the thermal insulation composite branch pipe 40 closer to the rear end of the thermal insulation composite main pipe 10 will be greater than that of the thermal insulation composite branch pipe 40 closer to the front end of the thermal insulation composite main pipe 10.

[0088] In some embodiments, the insulated composite branch pipes 40 are connected by quick-connect fittings 50, and the insertion parts of the insulated composite branch pipes 40 and the quick-connect fittings 50 are compatible. In this embodiment, the insulated composite branch pipes 40 are connected by quick-connect fittings 50. By using a combination of longer and shorter insulated composite branch pipes 40 for assembly, the structure of this utility model is more reliable and robust, and easier to construct on-site, increasing the coordination and flexibility of the installation. Of course, in other embodiments, the insulated composite branch pipes 40 can also be assembled end-to-end by fittings located at their respective air inlets and outlets. Alternatively, the insulated composite branch pipe 40 can be a single, continuous piece.

[0089] The insulated composite main pipe 10 is assembled by plugging in the insulated composite main pipe quick-connect fitting 20, and the insulated composite branch pipe 40 is assembled by plugging in the insulated composite branch pipe quick-connect fitting 50. This enables segmented production, transportation, and construction installation of pipe fittings, which facilitates production, transportation, and construction installation, thereby reducing costs.

[0090] In some embodiments, the insertion portion of the thermally insulated composite branch pipe 40 is compatible with the insertion portion of the thermally insulated composite static pressure box 60. In this embodiment, constant temperature and quiet air supply are achieved throughout, improving the comfort of the living environment. Of course, in other embodiments, air supply can also be achieved directly through the air outlet of the thermally insulated composite branch pipe 40.

[0091] In some embodiments, the inner diameter of the thermally insulated composite main pipe 10 is larger than the inner diameter of the thermally insulated composite branch pipe 40. In this embodiment, the large-diameter thermally insulated composite main pipe 10 supplies air, while the small-diameter thermally insulated composite branch pipe 40 distributes air, saving materials and making the air supply pipeline easier to construct. The small-diameter thermally insulated composite branch pipe 40 supplies air more quickly and promptly, with a more sensitive response speed. Specifically, the inner diameter of the thermally insulated composite branch pipe 40 is 1 / 5 to 3 / 5 of the inner diameter of the thermally insulated composite main pipe 10. Of course, in other embodiments, the inner diameter of the thermally insulated composite branch pipe 40 is 1 / 6 to 1 / 5 of the inner diameter of the thermally insulated composite main pipe 10.

[0092] In some embodiments, the air inlet of the thermal insulation composite distributor 30 is connected to the thermal insulation composite main pipe 10; the air outlet of the thermal insulation composite distributor 30 is connected to the thermal insulation composite branch pipe 40; and the number of air outlets of the thermal insulation composite distributor 30 exceeds the number of its air inlets. In this embodiment, the thermal insulation composite distributor 30 has fewer air inlets and more branch pipes for air distribution, thus achieving air delivery over a larger area through more paths, resulting in more balanced and smoother air delivery, improved air delivery comfort, and ultimately, improved quality of the living environment. Specifically, the number of air outlets of the thermal insulation composite distributor 30 exceeds the number of air inlets by at least two.

[0093] In some embodiments, the insulated composite static pressure box 60 is connected to at least one insulated composite branch pipe 40. In this embodiment, the insulated composite static pressure box is connected to multiple insulated composite branch pipes, allowing for flexible adjustment of the airflow to meet the different fresh air needs of residents. Specifically, the insulated composite static pressure box 60 is connected to 2 to 5 insulated composite branch pipes 40, and the insulated composite static pressure box 60 has at least one static pressure outlet 61. When the insulated composite static pressure box 60 has multiple static pressure outlets 61, the static pressure outlets 61 are distributed at different locations within the box. Preferably, the static pressure outlet 61 of the insulated composite static pressure box 60 is provided with an air supply grille 611. In practical applications, the airflow and air direction can be adjusted by adjusting the opening of the air supply grille 611. In other embodiments, the airflow can also be adjusted by controlling the airflow entering the insulated composite static pressure box 60 through the control valve of the insulated composite branch pipe 40, thereby meeting the different fresh air needs of residents.

[0094] In some embodiments, the insulated composite main pipe quick-connect fitting 20, the insulated composite distributor 30, the insulated composite branch pipe quick-connect fitting 50, and the insulated composite static pressure box 60 only have insertion parts; the insulated composite main pipe 10 and the insulated composite branch pipe 40 only have socket parts. In this embodiment, the air supply pipe fittings (insulated composite main pipe 10 and insulated composite branch pipe 40) use socket parts, and the connecting or distributing parts use insertion parts. This assembly method is simple and quick, as well as airtight and secure, convenient for construction, and not easily deformed or damaged. In practical applications, the insulated composite main pipe 10 and the insulated composite branch pipe 40 can be made of metal or plastic pipes, which have high strength and strong deformation recovery, are easy to install, and have strong sturdiness. Of course, in other embodiments, the insulated composite main pipe quick-connect fitting 20, the insulated composite distributor 30, the insulated composite branch pipe quick-connect fitting 50, and the insulated composite static pressure box 60 only have socket parts, and the insulated composite main pipe 10 and the insulated composite branch pipe 40 only have insertion parts. In other embodiments, the components can be combined arbitrarily, as long as one of the two parts being assembled is an insertion part and the other is a socket part.

[0095] For example, such as Figures 1 to 3 As shown, this prefabricated fresh air supply duct is an insulated composite main pipe 10, which includes: a main pipe body 111, a main pipe insulation layer 112, a main pipe insulation protective layer 113, and a female groove interface 72; wherein, the main pipe body 111 is provided with an air supply channel, the front end of the air supply channel along the air supply direction forms an air outlet, and the rear end forms an air inlet; the end of the main pipe body 111 that forms the air outlet forms a female groove interface 72, and the end of the main pipe body 111 that forms the air inlet forms a female groove interface 72; the main pipe insulation layer 112 is sleeved on the outside of the main pipe body 111, and the main pipe insulation protective layer 113 is sleeved on the outside of the main pipe insulation layer 112.

[0096] For example, such as Figure 1 , Figure 2 and Figure 4 As shown, this prefabricated fresh air supply duct is an insulated composite main quick-connect insert 20, which includes: a main quick-connect insert body 211, a main quick-connect insert insulation layer 212, a main quick-connect insert insulation protective layer 213, and a male groove interface 71; wherein, the main quick-connect insert body 211 is provided with an air supply channel, the front end of the air supply channel along the air supply direction forms an air outlet, and the rear end forms an air inlet; the end of the main quick-connect insert body 211 that forms the air inlet forms a male groove interface 71, the end of the main quick-connect insert body 211 that forms the air outlet forms a male groove interface 71, the main quick-connect insert insulation layer 212 is sleeved on the outside of the main quick-connect insert body 211, and the main quick-connect insert insulation protective layer 213 is sleeved on the outside of the main quick-connect insert insulation layer 212.

[0097] For example, such as Figure 1 and Figure 2As shown, the female slot interface 72 includes a female slot cylinder 721 and a female slot groove 722; wherein, the female slot cylinder 721 is formed at the end of the main pipe body 111 near its end face, and the female slot groove 722 is formed by a radial outward recess in the main pipe body 111 at a position away from the end face. Correspondingly, the male slot interface 71 includes a male slot cylinder 711 and a male slot hook 712; wherein, the male slot cylinder 711 is formed by an axially outward extending portion of the main pipe quick-connect body 211, and the male slot hook 712 is formed by a radial outward protrusion at the end of the male slot cylinder 711 away from the main pipe quick-connect body 211. When the insulated composite main pipe 10 and the insulated composite main pipe quick-connect fitting 20 are plugged in and assembled, they are brought close together under strong pressure so that the male groove hook 712 is accommodated in the female groove 722, thereby achieving axial mutual contact. The total thickness of the radially superimposed female groove interface 72 and male groove interface 71 is the same as that of the main pipe quick-connect fitting body 211 (or main pipe body 111). More preferably, the inner and outer diameters of the main pipe quick-connect fitting body 211 and the main pipe body 111 are the same, the thicknesses of the main pipe insulation layer 112 and the main pipe quick-connect fitting insulation layer 212 are the same, the thicknesses of the main pipe insulation protective layer 113 and the main pipe quick-connect fitting insulation layer 212 are the same, the end face of the main pipe insulation layer 112 is flush with the end face of the female groove interface 72, and the male groove interface 71 axially protrudes and is exposed on the outside of the main pipe quick-connect fitting insulation layer 212. Therefore, when the insulated composite main pipe 10 and the insulated composite main pipe quick-connect fitting 20 are plugged in and assembled, the relative thicknesses of the male groove hook 712 and the female groove interface 72 are the same. The end faces of the main insulation layer 112 (main insulation protection layer 113) and the main quick-connect insulation layer 212 (main quick-connect insulation protection layer 213) are closely fitted together, so that the appearance and structure of the assembled composite insulation main pipe 10 and the composite insulation main pipe quick-connect 20 are integrated. Subsequently, one or more layers of sealing tape are wrapped around the outside of the joint to form a sealing layer 80. The sealing layer 80 may extend at least a certain distance or completely cover the composite insulation main pipe 10 and the composite insulation main pipe quick-connect 20.

[0098] Specifically, such as Figure 2As shown, the mother groove 722 includes: a groove cylinder 7221 and a groove cone 7222; wherein, the groove cylinder 7221 is disposed between the mother groove cylinder 721 and the groove cone 7222, the inner diameter of the mother groove cylinder 721 is larger than the inner diameter of the main pipe body 111, the inner diameter of the groove cylinder 7221 is larger than the inner diameter of the mother groove cylinder 721, and the inner diameter of the groove cone 7222 gradually changes from the inner diameter of the groove cylinder 7221 to the inner diameter of the mother groove cylinder 721; the outer diameters of the main pipe body 111, the mother groove cylinder 721, the groove cylinder 7221, and the groove cone 7222 are all the same. The male groove hook 712 includes a hook cylinder 7121 and a hook cone 7122; wherein, the hook cylinder 7121 is disposed between the male groove cylinder 711 and the hook cone 7122, the outer diameter of the male groove cylinder 711 is smaller than the outer diameter of the main pipe quick-connect body 211, the outer diameter of the hook cylinder 7121 is smaller than the outer diameter of the main pipe quick-connect body 211 but larger than the outer diameter of the male groove cylinder 711, and the outer diameter of the hook cone 7122 gradually changes from the outer diameter of the hook cylinder 7121 to the inner diameter of the main pipe quick-connect body 211; the main pipe quick-connect body 211... The inner diameters of the male groove cylinder 711, the hook cylinder 7121, and the hook cone 7122 are all the same; the sum of the thicknesses of the female groove cylinder 721 and the male groove cylinder 711 is equal to the thickness of the main pipe body 111 (main pipe quick-connect body 211); the sum of the thicknesses of the groove cylinder 7221 and the hook cylinder 7121 is equal to the thickness of the main pipe body 111 (main pipe quick-connect body 211); the sum of the thicknesses of the groove cone 7222 and the hook cone 7122 is equal to the thickness of the main pipe body 111 (main pipe quick-connect body 211). More preferably, the groove cylinder 7221 and the hook cylinder 7121 are rounded to facilitate smoother insertion. Of course, in practical applications, the cross-sectional shape of the convex-concave fit is not limited to the above-mentioned rectangle + right triangle; it can also be a rectangle + right trapezoid, rectangle, circle, irregular polygon, or regular polygon.

[0099] For example, such as Figure 1 and Figure 5As shown, this prefabricated fresh air supply duct is an insulated composite distributor 30, which includes: a distributor body 331, a distributor insulation layer 332, a distributor insulation protective layer 333, and a male groove interface 71; wherein, the distributor body 331 is provided with an air supply channel, the front end of the air supply channel along the air supply direction forms a distribution plug-in air outlet 31, and the rear end forms a distribution plug-in air inlet 32; the end of the distributor body 331 forming the distribution plug-in air outlet 31 forms a male groove interface 71, and the end of the distributor body 331 forming the distribution plug-in air inlet 32 ​​forms a male groove interface 71; the distributor insulation layer 332 is sleeved on the outside of the distributor body 331 and the male groove interface 71 faces... The outer side of the distributor insulation layer 332 is exposed, and the distributor insulation protective layer 333 is sleeved on the outer side of the distributor insulation layer 332. The structure of the male slot interface 71 set in the distributor plug-in air inlet 32 ​​is the same as the structure of the male slot interface 71 of the insulation composite main pipe quick plug 20, and the structure of the male slot interface 71 set in the distributor plug-in air outlet 31 is the same as the structure of the male slot interface 71 of the insulation composite branch pipe quick plug 50. The male slot interface 71 set in the distributor plug-in air inlet 32 ​​is adapted to the female slot interface 72 of the insulation composite main pipe 10. The male slot interface 71 set in the distributor plug-in air outlet 31 is adapted to the female slot interface 72 of the insulation composite branch pipe 40. Further preferably, there is one distributor plug-in air inlet 32 ​​and four distributor plug-in air outlets 31, of which two distributor plug-in air outlets 31 are arranged opposite each other, and the other two distributor plug-in air outlets 31 are arranged on the same side and opposite to the distributor plug-in air inlet 32. Preferably, the inner diameter of the distribution plug-in air inlet 32 ​​is larger than the inner diameter of the distribution plug-in air outlet 31, and the inner diameters of the four distribution plug-in air outlets 31 are the same. Of course, in other embodiments, the inner diameters of the different distribution plug-in air outlets 31 may also be different, and can be selectively limited according to the space or distance of their distribution, subject to the actual situation.

[0100] For example, such as Figures 1 to 3 As shown, this prefabricated fresh air supply duct is an insulated composite branch pipe 40, which includes: a branch pipe body 411, a branch pipe insulation layer 412, a branch pipe insulation protective layer 413, and a mother groove interface 72. The branch pipe body 411 has an air supply channel, with an air outlet at the front end and an air inlet at the rear end along the air supply direction. The mother groove interface 72 is formed at both the air outlet and inlet ends of the branch pipe body 411. The branch pipe insulation layer 412 is fitted over the outside of the branch pipe body 411, and the branch pipe insulation protective layer 413 is fitted over the outside of the branch pipe insulation layer 412. In practical applications, the structure of the mother groove interface 72 of the insulated composite branch pipe 40 is similar to that of the mother groove interface 72 of the insulated composite main pipe 10.

[0101] For example, such as Figures 1 to 3As shown, this prefabricated fresh air supply duct is an insulated composite branch pipe quick-connect insert 50, which includes: a branch pipe quick-connect insert body, a branch pipe quick-connect insert insulation layer, a branch pipe quick-connect insert insulation protective layer, and a male groove interface 71; wherein, the branch pipe quick-connect insert body is provided with an air supply channel, the front end of the air supply channel along the air supply direction forms an air outlet, and the rear end forms an air inlet; the end of the branch pipe quick-connect insert body that forms the air inlet forms a male groove interface 71, the end of the branch pipe quick-connect insert body that forms the air outlet forms a male groove interface 71, the branch pipe quick-connect insert insulation layer is sleeved on the outside of the branch pipe quick-connect insert body, and the branch pipe quick-connect insert insulation protective layer is sleeved on the outside of the branch pipe quick-connect insert insulation layer.

[0102] For example, such as Figure 1 and Figure 6 As shown, this prefabricated fresh air supply duct is an insulated composite static pressure box 60, which includes: a static pressure box body 621, a static pressure box insulation layer 622, a static pressure box insulation protective layer 623, and a male groove interface 71; wherein, the static pressure box body 621 is provided with an air supply channel, the front end of the air supply channel along the air supply direction forms a static pressure air outlet 61 to deliver fresh air to the indoor space, and the rear end forms a static pressure air inlet 63; the static pressure air outlet 61 is provided with an air outlet grille 611; the static pressure box body 621 forms a static pressure air outlet 63; The end of the pressure outlet 61 forms a male groove interface 71, and the end of the static pressure box body 621 forming the static pressure air inlet 63 forms a male groove interface 71; the structure of the male groove interface 71 of the thermal insulation composite static pressure box 60 is the same as the structure of the male groove interface 71 of the thermal insulation composite branch pipe quick plug 50, so that it can be quickly plugged into the thermal insulation composite branch pipe 40; the static pressure box insulation layer 622 is sleeved on the outside of the static pressure box body 621; the static pressure box insulation protection layer 623 is sleeved on the outside of the static pressure box insulation layer 622.

[0103] Of course, in other embodiments, all female groove interfaces 72 of this prefabricated fresh air supply duct can be replaced with male groove interfaces 71. In other embodiments, one of the female groove interfaces 72 can also be replaced with a male groove interface 71. When the inner diameters of the air inlet and outlet of the prefabricated fresh air supply duct are the same, the female groove interface 72 and the male groove interface 71 are radially concave-convex fitting structures, and their engagement is achieved by axial strong pressure, thereby realizing the plug-in assembly of two adjacent prefabricated fresh air supply ducts.

[0104] This utility model also improves a prefabricated fresh air supply duct, such as Figures 1 to 8 As shown, it includes the prefabricated fresh air supply duct described in any of the above embodiments.

[0105] In some implementations, such as Figures 1 to 8As shown, the prefabricated fresh air supply ductwork consists of an insulated composite main pipe 10, an insulated composite distributor 30, an insulated composite branch pipe 40, and an insulated composite plenum chamber 60. The air outlet of the insulated composite main pipe 10 is connected to the air inlet of the insulated composite distributor 30 via a matching plug-in portion. The air outlet of the insulated composite distributor 30 is connected to the air inlet of the insulated composite branch pipe 40 via a matching plug-in portion. The air outlet of the insulated composite branch pipe 40 is connected to the air inlet of the insulated composite plenum chamber 60 via a matching plug-in portion. The air outlet of the insulated composite plenum chamber 60 is used to supply air into the room. In this embodiment, the insulated composite main pipe 10 and the insulated composite branch pipe 40 can be installed as a single piece or assembled end-to-end via plug-in portions.

[0106] In some implementations, such as Figures 1 to 8 As shown, the prefabricated fresh air supply duct also includes a quick-connect fitting 20 for the insulated composite main pipe. The insulated composite main pipes 10 are connected to each other via the quick-connect fitting 20, and the insertion parts of the insulated composite main pipes 10 and the insertion parts of the quick-connect fittings 20 are compatible. In this embodiment, multiple insulated composite main pipes 10 are not connected end-to-end by their own assembly, but are installed through the intermediate quick-connect fitting 20. This makes production, transportation, and on-site assembly easier to achieve, and the structure is more stable and reliable.

[0107] In some implementations, such as Figures 1 to 8 As shown, the prefabricated fresh air supply duct also includes insulated composite branch pipe quick-connect fittings 50. The insulated composite branch pipes 40 are connected via these quick-connect fittings 50, and the insertion parts of the insulated composite branch pipes 40 and 50 are compatible. In this embodiment, multiple insulated composite branch pipes 40 are not connected end-to-end through assembly, but rather their installation is achieved through the intermediate insulated composite branch pipe quick-connect fittings 50. This makes production, transportation, and on-site assembly easier to implement, and the structure is more stable and reliable.

[0108] In some implementations, such as Figures 1 to 8 As shown, a sealing layer 80 is provided at the joint between the prefabricated fresh air supply ducts. In this embodiment, sealing tape is wrapped around the joint of the two prefabricated fresh air supply ducts assembled through the joint to form a sealing layer 80, thereby strengthening the connection and sealing performance, resulting in a more robust structure and a longer service life. In practical applications, the sealing layer 80 can be applied to either the extension portion of the two prefabricated fresh air supply ducts or to the entire assembly.

[0109] In some implementations, such as Figures 1 to 8As shown, the prefabricated fresh air supply duct is laid on the backfill layer 92, which is laid on the floor slab 91, and the backfill layer 92 is covered with a floor decorative panel 93. In this embodiment, the prefabricated fresh air supply duct is buried in the backfill layer 92, which does not occupy the residents' living space, does not affect the aesthetics of the living space, and can improve the quality of the residents' living environment.

[0110] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A prefabricated fresh air supply duct, characterized in that, include: The main body of the pipeline is equipped with an air supply channel, an air inlet, and an air outlet; An insulation layer, which is fitted over the outside of the main body of the pipeline; and, A connector is provided on the main body of the pipeline and located at the air inlet and / or the air outlet of the air supply channel; When two adjacent prefabricated fresh air supply ducts are in a plugged-in state through a matching plug, the end faces of their insulation layers that are close to each other are axially opposite each other.

2. The prefabricated fresh air supply duct according to claim 1, characterized in that, The insertion part is at least one of the following: a threaded part with internal or external threads, a snap-fit ​​part with grooves or protrusions, and an abutment part with radial protrusions to achieve axial contact.

3. The prefabricated fresh air supply duct according to claim 1, characterized in that, When two adjacent prefabricated fresh air supply ducts are in the plug-in state, the end faces of their insulation layers that are close to each other are axially fitted; and / or, When two adjacent prefabricated fresh air supply ducts are in the plug-in state, the axial distance between the end faces of their insulation layers that are close to each other is no more than 50mm; and / or, An insulation protective layer is fitted over the outside of the insulation layer.

4. The prefabricated fresh air supply duct according to claim 1, characterized in that, The insertion part is one of the inserted part and the sleeve part that fit together; The protruding part is located in the main body of one of the prefabricated fresh air supply ducts that are connected to each other in an adjacent manner, and the sleeve part is located in the main body of the other prefabricated fresh air supply duct that is connected to each other in an adjacent manner; the protruding part axially protrudes from the end face of the insulation layer of the prefabricated fresh air supply duct in which it is located, and the sleeve part axially is flush with the end face of the insulation layer of the prefabricated fresh air supply duct in which it is located. When the two adjacent prefabricated fresh air supply pipes are in the plug-in state, the protruding part is sleeved inside the sleeve part, so that the end faces of their insulation layers are axially fitted together.

5. The prefabricated fresh air supply duct according to any one of claims 1-4, characterized in that, The assembled fresh air supply duct is at least one of the following: insulated composite main pipe (10), insulated composite main pipe quick-connect plug (20), insulated composite distributor (30), insulated composite branch pipe (40), insulated composite branch pipe quick-connect plug (50), and insulated composite static pressure box (60).

6. The prefabricated fresh air supply duct according to claim 5, characterized in that, The thermal insulation composite main pipes (10) are connected to each other via quick-connect fittings (20), and the insertion portions of the thermal insulation composite main pipes (10) and the quick-connect fittings (20) are compatible; and / or, The connector of the thermal insulation composite main pipe (10) is adapted to the connector of the thermal insulation composite distributor (30); and / or, The insertion part of the thermal insulation composite distributor (30) is compatible with the insertion part of the thermal insulation composite branch pipe (40); and / or, The thermal insulation composite branch pipes (40) are connected to each other via the thermal insulation composite branch pipe quick-connect fittings (50), and the insertion parts of the thermal insulation composite branch pipes (40) and the insertion parts of the thermal insulation composite branch pipe quick-connect fittings (50) are compatible; and / or, The insertion part of the thermal insulation composite branch pipe (40) is compatible with the insertion part of the thermal insulation composite static pressure box (60); and / or, The inner diameter of the thermal insulation composite main pipe (10) is larger than the inner diameter of the thermal insulation composite branch pipe (40); and / or, The air inlet of the thermal insulation composite distributor (30) is connected to the thermal insulation composite main pipe (10); the air outlet of the thermal insulation composite distributor (30) is connected to the thermal insulation composite branch pipe (40); the number of air outlets of the thermal insulation composite distributor (30) exceeds the number of its air inlets; and / or, The thermal insulation composite static pressure box (60) is connected to at least one of the thermal insulation composite branch pipes (40).

7. The prefabricated fresh air supply duct according to claim 5, characterized in that, The thermal insulation composite main pipe quick-connect plug (20), the thermal insulation composite distributor (30), the thermal insulation composite branch pipe quick-connect plug (50) and the thermal insulation composite static pressure box (60) are only provided with an insertion part; The thermal insulation composite main pipe (10) and the thermal insulation composite branch pipe (40) are only provided with a sleeve part.

8. A prefabricated fresh air supply duct, characterized in that, Includes the prefabricated fresh air supply duct as described in any one of claims 1-7.

9. The prefabricated fresh air supply duct according to claim 8, characterized in that, The assembled fresh air supply duct is an insulated composite main pipe (10), an insulated composite distributor (30), an insulated composite branch pipe (40), and an insulated composite static pressure box (60). The air outlet of the thermal insulation composite main pipe (10) is connected to the air inlet of the thermal insulation composite distributor (30) through a matching plug-in part. The air outlet of the thermal insulation composite distributor (30) is connected to the air inlet of the thermal insulation composite branch pipe (40) through a matching plug-in part. The air outlet of the thermal insulation composite branch pipe (40) is connected to the air inlet of the thermal insulation composite static pressure box (60) through a matching plug-in part. The air outlet of the thermal insulation composite static pressure box (60) is used to supply air to the room.

10. The prefabricated fresh air supply duct according to claim 9, characterized in that, The assembled fresh air supply duct is also a quick-connect fitting (20) for insulated composite main pipes, wherein the insulated composite main pipes (10) are connected to each other through the quick-connect fitting (20), and the plug-in portion of the insulated composite main pipe (10) and the plug-in portion of the quick-connect fitting (20) are compatible; and / or, The assembled fresh air supply duct is also an insulated composite branch pipe quick-connect fitting (50), wherein the insulated composite branch pipes (40) are connected to each other through the insulated composite branch pipe quick-connect fitting (50), and the insertion part of the insulated composite branch pipe (40) and the insertion part of the insulated composite branch pipe quick-connect fitting (50) are adapted to each other; and / or, The joints between the prefabricated fresh air supply ducts are provided with a sealing layer (80); and / or, The prefabricated fresh air supply duct is laid on the backfill layer (92), the backfill layer (92) is laid on the floor slab (91), and the backfill layer (92) is covered with floor decorative panels (93).

Images