Energy-saving ventilation pipeline heat preservation layer
By using sliding blocks and grooves, and extending the sliding adjustment of the insulation board, the problems of disassembling and sizing the insulation layer of the ventilation duct are solved, enabling convenient installation and adaptability to multiple sizes, and enhancing waterproof and fireproof performance.
Patent Information
- Application Number
- CN202520756119.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-21
AI Technical Summary
The existing ventilation duct insulation layer cannot be removed or replaced and its size is fixed, resulting in inconvenient installation and low practicality.
The design employs sliding blocks and grooves, allowing insulation layer one and insulation layer two to be spliced together to fit over the inner wall of the ventilation duct. The size can be adjusted by sliding the extended insulation board, and combined with magnetic adsorption and a waterproof sealing sleeve, it enhances fire resistance.
It enables convenient installation and removal of the insulation layer, adapts to ventilation ducts of various sizes, improves installation efficiency and practicality, and enhances waterproof and fireproof performance.
Smart Images

Figure CN223868840U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ventilation duct technology, and specifically relates to an energy-saving ventilation duct insulation layer. Background Technology
[0002] Common ventilation ducts have an internal insulation layer to maintain temperature, thereby reducing the energy wasted during airflow and achieving energy-saving effects.
[0003] Currently, Chinese utility model patent CN220870320U discloses an insulation layer structure for a spliced ventilation duct. However, existing ventilation duct insulation layers are generally connected and installed using adhesive bonding. This method of installation means that once bonded and fixed, it cannot be disassembled, making replacement in case of subsequent damage inconvenient. Furthermore, existing insulation layers are generally of fixed size and cannot be adjusted, therefore they cannot be directly installed inside ventilation ducts of various sizes. They typically require cutting to the appropriate size before installation, affecting installation efficiency and reducing practicality. Utility Model Content
[0004] The purpose of this utility model is to provide an energy-saving ventilation duct insulation layer, which has the advantage that the insulation layer can be adjusted in size, making it easy to install and disassemble inside various types of ventilation ducts.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an energy-saving ventilation duct insulation layer, comprising a ventilation duct body, an insulation layer one, and an insulation layer two, wherein the insulation layer one and the insulation layer two are installed inside the inner wall of the ventilation duct body, both ends of the insulation layer two are fixedly connected with sliding blocks, both ends of the insulation layer one are provided with sliding grooves that are slidably connected to the sliding blocks, and a convex locking block that engages with the sliding groove is welded to the end of the sliding block away from the insulation layer two.
[0006] By employing the above technical solution, insulation layer one and insulation layer two are interlocked using sliding blocks and grooves, allowing them to completely enclose the inner wall of the ventilation duct body. This not only provides thermal insulation and protection for the surface of the ventilation duct body but also facilitates installation and disassembly. Furthermore, insulation layer one and insulation layer two can slide relative to each other using extension insulation plates one and two, allowing them to expand outwards or contract inwards. This enables insulation layer one and insulation layer two to be adjusted to various sizes to fit the dimensions of the ventilation duct body, improving practicality.
[0007] The present invention is further configured such that: an extension insulation plate 1 and an extension insulation plate 2 that slide against each other are fixedly connected inside the insulation layer 1 and the insulation layer 2 respectively; a spring is fixedly connected inside the extension insulation plate 1; an insert is welded to one end of the spring near the extension insulation plate 2; and a trapezoidal groove and a square groove that engage with the insert are respectively opened on the side of the extension insulation plate 2 near the extension insulation plate 1.
[0008] Using the above technical solution, the insulation layer one and insulation layer two can be adjusted to various sizes for installation according to the dimensions of the ventilation duct body.
[0009] The present invention is further configured such that: the outer surfaces of the first insulation layer and the second insulation layer are fitted with sealing sleeves that are bonded to the main body of the ventilation duct.
[0010] By adopting the above technical solution, moisture from the outside of the ventilation duct body can be prevented from entering the insulation layer 1 and insulation layer 2 and affecting the insulation effect.
[0011] The present invention is further configured such that a fireproof layer is bonded to the inner surfaces of the first insulation layer and the second insulation layer.
[0012] By adopting the above technical solution, the fire resistance of the insulation layer is improved, thereby preventing it from being affected by the smoke inside the ventilation duct.
[0013] The present invention is further configured such that: the end of the sliding block away from the second insulation layer and the inside of the sliding groove are both fixedly connected with magnet blocks that are attracted to each other by magnetic force.
[0014] By adopting the above technical solution, the magnetic force of the magnet can be used to attract and fix the sliding block inside the groove, thereby preventing the second insulation layer from automatically sliding off the first insulation layer.
[0015] In summary, this utility model has the following beneficial effects:
[0016] 1. By using sliding blocks and grooves to interlock the first and second insulation layers, they can completely enclose the inner wall of the ventilation duct body. This not only provides thermal insulation and protection for the surface of the ventilation duct body but also facilitates installation and disassembly.
[0017] 2. The insulation layer one and insulation layer two can slide against each other using extension insulation board one and extension insulation board two, allowing them to expand outwards or contract inwards. This allows insulation layer one and insulation layer two to be adjusted to various sizes to fit the dimensions of the ventilation duct body, improving practicality. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a cross-sectional view of the structure of this utility model.
[0020] Reference numerals in the attached drawings: 1. Main body of ventilation duct; 2. Insulation layer one; 3. Insulation layer two; 4. Sliding block; 5. Slide groove; 6. Convex locking block; 7. Extended insulation board one; 8. Extended insulation board two; 9. Spring; 10. Trapezoidal groove; 11. Square groove; 12. Insert block; 13. Sealing sleeve; 14. Fireproof layer; 15. Magnet block. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to the accompanying drawings.
[0022] Example 1:
[0023] refer to Figure 1 , Figure 2 An energy-saving ventilation duct insulation layer includes a ventilation duct body 1, an insulation layer 2, and an insulation layer 3. Insulation layers 2 and 3 are installed inside the inner wall of the ventilation duct body 1. Sliding blocks 4 are fixedly connected to both ends of insulation layer 3. Sliding grooves 5 are formed at both ends of insulation layer 2, which are slidably connected to the sliding blocks 4. A convex locking block 6 is welded to the end of the sliding block 4 away from insulation layer 3, engaging with the sliding groove 5. Insulation layers 2 and 3 are interlocked using the sliding blocks 4 and sliding grooves 5, allowing them to completely enclose the inner wall of the ventilation duct body 1. This not only provides insulation and protection for the surface of the ventilation duct body 1 but also facilitates installation and disassembly.
[0024] refer to Figure 2 The outer surfaces of insulation layer 1 (2) and insulation layer 2 (3) are fitted with sealing sleeves 13 that are bonded to the main body of the ventilation duct 1. This prevents moisture from the outside of the main body of the ventilation duct 1 from entering the interior of insulation layer 1 (2) and insulation layer 2 (3) and affecting the insulation effect.
[0025] refer to Figure 2 The sliding block 4 at the end away from the second insulation layer 3 and inside the slide groove 5 are both fixedly connected to magnet blocks 15 that are attracted to each other by magnetic force. The magnetic force of the magnet blocks 15 can be used to attract and fix the sliding block 4 inside the slide groove 5, thereby preventing the second insulation layer 3 from automatically sliding off the first insulation layer 2.
[0026] Brief description of the usage process: By sliding the sliding blocks 4 at both ends of the second insulation layer 3 laterally into the interior of the groove 5, the sliding blocks 4 are secured inside the groove 5 by the convex locking blocks 6, thus splicing the first insulation layer 2 and the second insulation layer 3 together so that they cannot be pulled outwards and detached. Then, another first insulation layer 2 and a second insulation layer 3 are spliced and installed at the other end of the first insulation layer 2 and the second insulation layer 3, so that the two first insulation layers 2 and the two second insulation layers 3 can fit inside the inner wall of the ventilation duct body 1, thereby providing thermal insulation and protection for the surface of the ventilation duct body 1.
[0027] Example 2:
[0028] refer to Figure 1 , Figure 2 An energy-saving ventilation duct insulation layer is disclosed. Insulation layer 2 and insulation layer 3 have internally fixedly connected sliding extension insulation plates 7 and 8, respectively. A spring 9 is fixedly connected inside extension insulation plate 7. A plug 12 is welded to one end of spring 9 near extension insulation plate 8. Trapezoidal grooves 10 and square grooves 11, respectively, are formed on the side of extension insulation plate 8 near extension insulation plate 7, engaging with the plug 12. The insulation layers 2 and 3 can slide relative to each other using extension insulation plates 7 and 8, allowing them to expand outwards or contract inwards. This allows insulation layers 2 and 3 to be adjusted to various sizes to fit the dimensions of the ventilation duct body 1, improving practicality.
[0029] refer to Figure 2 A fireproof layer 14 is bonded to the inner surfaces of insulation layer 1 (2) and insulation layer 2 (3). This improves the fire resistance of the insulation layer, thereby preventing it from being affected by smoke inside the ventilation duct body 1.
[0030] Brief description of the usage process: By sliding the insulation layer 2 or insulation layer 3 according to the size of the main body 1 of the ventilation duct, the extension insulation plate 7 and extension insulation plate 8 are moved to the sides. Then, by using the trapezoidal groove 10 to press the insert 12 to overcome the elastic force of the spring 9, the spring 9 is retracted into the extension insulation plate 7. The spring 9's rebound force then drives the insert 12 into the trapezoidal groove 10 or square groove 11. Since the inner wall of the square groove 11 is flat on the side away from the trapezoidal groove 10, the flat surface cannot exert pressure on the insert 12 after it slides into the square groove 11, thus preventing the insert 12 from sliding out of the extension insulation plate 8. Finally, the insert 12 is fixed between the extension insulation plate 7 and extension insulation plate 8 by inserting it into the trapezoidal groove 10 or square groove 11, allowing the insulation layer 2 and insulation layer 3 to expand outward or contract inward, thus adjusting to various sizes as needed.
[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. An energy-saving ventilation duct insulation layer, comprising a ventilation duct body (1), an insulation layer one (2), and an insulation layer two (3), characterized in that: The first insulation layer (2) and the second insulation layer (3) are installed inside the inner wall of the ventilation duct body (1). Both ends of the second insulation layer (3) are fixedly connected with sliding blocks (4). Both ends of the first insulation layer (2) are provided with sliding grooves (5) that are slidably connected to the sliding blocks (4). The end of the sliding block (4) away from the second insulation layer (3) is welded with a convex locking block (6) that is engaged with the sliding groove (5).
2. The energy-saving ventilation duct insulation layer according to claim 1, characterized in that: The insulation layer 1 (2) and insulation layer 2 (3) are respectively fixedly connected to each other with an extension insulation plate 1 (7) and an extension insulation plate 2 (8). The extension insulation plate 1 (7) is fixedly connected to a spring (9). A plug (12) is welded to one end of the spring (9) near the extension insulation plate 2 (8). The extension insulation plate 2 (8) near the extension insulation plate 1 (7) is respectively provided with a trapezoidal groove (10) and a square groove (11) that engage with the plug (12).
3. The energy-saving ventilation duct insulation layer according to claim 1, characterized in that: The outer surfaces of the first insulation layer (2) and the second insulation layer (3) are fitted with sealing sleeves (13) that are bonded to the main body of the ventilation duct (1).
4. The energy-saving ventilation duct insulation layer according to claim 1, characterized in that: Fireproof layer (14) is bonded to the inner surfaces of insulation layer one (2) and insulation layer two (3).
5. The energy-saving ventilation duct insulation layer according to claim 1, characterized in that: The sliding block (4) at the end away from the second insulation layer (3) and inside the sliding groove (5) are both fixedly connected to magnet blocks (15) that are magnetically attracted to each other.
Citation Information
Patent Citations
Insulating layer structure of spliced ventilating duct
CN220870320U