A composite air duct with high-efficiency thermal insulation structure

Abstract

This utility model relates to the field of air conditioning and ventilation system technology, and discloses a composite air duct with a high-efficiency heat insulation structure. The heat insulation plate is fitted and abuts against the air duct body. A support frame plate is fixed on the heat insulation plate, and the support frame plate and air duct body are fitted and abut against each other. Connecting blocks are fixed to the side walls of the support frame plate and inserted into the air duct body. Positioning screws pass through the side walls of the support frame plate and are threaded onto the side of the air duct body. Protective plates are fitted and abut against the corresponding heat insulation plates. A connecting component is provided between two adjacent protective plates, and the front and rear ends of the protective plates abut against the wing plates. The connecting blocks limit the installation position of the support frame plate and the heat insulation plate, and the positioning screws fix the support frame plate to the air duct body, facilitating the disassembly and replacement of the heat insulation plate and ensuring its heat insulation efficiency. The protective plates further protect the heat insulation plate, extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning and ventilation system technology, specifically to a composite air duct with a high-efficiency heat insulation structure. Background Technology

[0002] In HVAC systems, composite ducts are widely used due to their excellent thermal insulation and sound insulation properties. Traditional composite ducts are typically manufactured by permanently bonding the insulation layer (such as glass wool or rock wool board) with adhesives or by molding it together with inner and outer metal layers in a single step. While this fixing method is robust, it reveals significant drawbacks during duct maintenance, repair, or modification. When it is necessary to inspect, clean, or replace a section of the duct interior that has been accidentally damaged, this integrated structure makes it difficult to remove the insulation layer individually. Often, the entire duct section needs to be destructively removed, which is extremely inconvenient and increases maintenance time and costs. Therefore, there is an urgent need for a composite duct with a highly efficient insulation structure to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a composite air duct with a simple structure, reasonable design, and convenient use, which has a high-efficiency heat insulation structure and can solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a duct body; the duct body is a hollow rectangular structure, and wing plates are fixed on both the front and rear sides of the duct body; It also includes: The heat insulation board consists of several heat insulation boards, which are configured to abut against the air duct body. A support frame is fixed on the heat insulation board, and the support frame is configured to abut against the air duct body. Connecting blocks, there are several connecting blocks, and they are respectively fixed on the side wall of the support frame plate. The connecting blocks are inserted into the air duct body. Positioning screws, wherein there are several positioning screws, and each of them passes through the side wall of the support frame plate and is threaded onto the side of the air duct body; The protective plate consists of several plates, each of which is configured to abut against a corresponding heat insulation plate. A connecting component is provided between two adjacent protective plates, and the front and rear ends of the protective plate are configured to abut against a wing plate.

[0005] Furthermore, the connection component includes: Connecting plates, there are several connecting plates, and they are symmetrically fixed on the side of the protective plate, and the connecting plates are arranged to abut against the heat insulation plate; The corner plate consists of several corner plates, each with a slot on both sides. A connecting plate is inserted into the slot, and the corner plate and wing plate are engaged in abutment. The fixing screws are of several kinds, and each of them passes through the side wall of the corner plate and is screwed onto the connecting plate.

[0006] Furthermore, both ends of the corner plate are provided with abutment pads, which are set to abut against the protective plate.

[0007] Furthermore, sound insulation grooves are provided on the side walls of several protective plates, and sound insulation cotton is placed inside the sound insulation grooves. The sound insulation cotton is set in contact with the heat insulation plate.

[0008] Furthermore, a sealing gasket is provided on the side of the wing plate, and the sealing gasket is configured to abut against the protective plate.

[0009] Furthermore, reinforcing frames are fixed to the outer walls of several protective plates, and support rods are provided on the inner walls of the reinforcing frames.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the composite air duct with a high-efficiency heat insulation structure of this utility model opens the heat insulation plate through the support frame plate, and then fixes the heat insulation plate to the air duct body with the positioning screw, which facilitates the installation and removal of the heat insulation plate. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the connecting component in this utility model.

[0013] Figure 3 This is a structural schematic diagram of the duct body and the protective plate in this utility model.

[0014] Figure 4 This is a structural schematic diagram of the air duct body and the heat insulation plate in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Duct body; 2. Wing plate; 3. Insulation board; 4. Support frame plate; 5. Connecting block; 6. Positioning screw; 7. Protective plate; 8. Connecting assembly; 9. Connecting plate; 10. Corner plate; 11. Groove; 12. Fixing screw; 13. Abutment pad; 14. Sound insulation groove; 15. Sound insulation cotton; 16. Sealing gasket; 17. Reinforcing frame; 18. Support rod. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figures 1-4As shown, the specific embodiment adopts the following technical solution: it includes a duct body 1; the duct body 1 is a hollow rectangular structure, and wing plates 2 are fixed on both the front and rear sides of the duct body 1. It also includes: The heat insulation board 3, of which there are several, is configured to abut against the air duct body 1. The support frame 4 is fixed on the heat insulation board 3 and is configured to abut against the air duct body 1. The heat insulation board 3 has the same structure and working principle as the rubber and plastic insulation board in the prior art. The heat insulation board 3 is a closed-cell foam structure with advantages such as good flexibility, low thermal conductivity and excellent moisture resistance. The support frame 4 plays a supporting role, increases the strength of the heat insulation board 3, and facilitates the installation of the heat insulation board 3 on the air duct body 1. Connecting block 5, there are several connecting blocks 5, and they are respectively fixed on the side wall of the support frame plate 4. The connecting block 5 is inserted into the air duct body 1 and plays a positioning role, limiting the installation position of the heat insulation plate 3. Positioning screws 6, there are several positioning screws 6, and they pass through the side wall of the support frame plate 4 and are threaded onto the side of the air duct body 1, so as to fix the support frame plate 4 onto the air duct body 1. The protective plates 7 are multiple in number, and each of them is configured to abut against the corresponding heat insulation plate 3. A connecting component 8 is provided between two adjacent protective plates 7. The front and rear ends of the protective plates 7 are configured to abut against the wing plates 2 to protect the heat insulation plate 3 and prevent it from being damaged. Sound insulation grooves 14 are provided on the side walls of the protective plates 7. Sound insulation cotton 15 is placed in the sound insulation grooves 14 and is configured to abut against the heat insulation plate 3 to reduce the noise generated by the duct body 1. A sealing gasket 16 is provided on the side of the wing plate 2. The sealing gasket 16 is configured to abut against the protective plates 7 to make the wing plate 2 and the protective plates 7 in flexible contact, which protects the protective plates 7 to a certain extent. A reinforcing frame 17 is fixed on the outer wall of the protective plates 7, and a support rod 18 is provided on the inner wall of the reinforcing frame 17 to increase the overall strength of the protective plates 7 and prevent the protective plates 7 from bending under force, which would affect the protection effect. Connection component 8 includes: Connecting plate 9, there are several connecting plates 9, and they are symmetrically fixed on the side of the protective plate 7. The connecting plate 9 and the heat insulation plate 3 are arranged to abut against each other. The connecting plate 9 increases the side length of the protective plate 7, which makes it easier to connect two adjacent protective plates 7 together. Angle plate 10, there are several angle plates 10, and each of them has a slot 11 on both sides. The connecting plate 9 is inserted into the slot 11. The angle plate 10 and the wing plate 2 are in contact. By interlocking the connecting plate 9 and the slot 11, the corresponding two protective plates 7 are connected and fixed. Both ends of the angle plate 10 are provided with abutting pads 13. The abutting pads 13 are in contact with the protective plates 7, so that the angle plate 10 and the protective plates 7 are in flexible contact, and the connection between the angle plate 10 and the protective plates 7 is sealed. A number of fixing screws 12 are provided, and each screw passes through the side wall of the corner plate 10 and is threaded onto the connecting plate 9, so as to fix the corner plate 10 onto the connecting plate 9.

[0018] When using this utility model, first place the support frame plate 4 and the heat insulation plate 3 on the duct body 1, and insert the connecting block 5 into the groove on the side wall of the duct body 1. Then, pass the positioning screw 6 through the side wall of the support frame plate 4 and screw it onto the duct body 1 to fix the heat insulation plate 3 on the duct body 1. Then, the protective plate 7 abuts against the heat insulation plate 3 and the support frame plate 4, so that the end of the protective plate 7 abuts against the sealing gasket 16. Then, install the corner plate 10 at the ends of two adjacent protective plates 7, so that the connecting plate 9 is locked in the slot 11. With the help of the fixing screw 12, fix the corner plate 10 and the connecting plate 9 together, connect the ends of several protective plates 7 together, and form a whole to protect the heat insulation plate 3.

[0019] Compared with the prior art, the beneficial effects of this utility model are: By using the limiting function of the connecting block 5, the installation positions of the support frame plate 4 and the heat insulation plate 3 are restricted. Then, the positioning screw 6 is used to fix the support frame plate 4 on the air duct body 1, which facilitates the disassembly and replacement of the heat insulation plate 3, ensuring the heat insulation efficiency of the heat insulation plate. The heat insulation plate 3 is then protected by the protective plate 7, which improves the service life of the heat insulation plate 3. A connecting component 8 is provided, and the corner plate 10 is fixedly connected to the corresponding connecting plate 9 by the fixing screw 12, thereby connecting two adjacent protective plates 7 together; Sound insulation cotton 15 is installed to block and absorb the noise generated by the air duct body 1, preventing indoor noise pollution. A reinforcing frame 17 is provided to increase the strength of the protective plate 7 and prevent the protective plate 7 from bending and deforming under stress, thus affecting the protective effect.

[0020] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite duct with a high-efficiency thermal insulation structure, comprising a duct body (1); the duct body (1) is a hollow rectangular structure, and wing plates (2) are fixed on both the front and rear sides of the duct body (1). characterized in that It also includes: The heat insulation board (3) is a plurality of such heat insulation boards (3). The heat insulation board (3) is configured to abut against the air duct body (1). The support frame (4) is fixed on the heat insulation board (3) and the support frame (4) is configured to abut against the air duct body (1). Connecting block (5), there are several connecting blocks (5), and they are respectively fixed on the side wall of the support frame plate (4). The connecting block (5) is inserted into the air duct body (1). Positioning screws (6), there are several positioning screws (6), and they pass through the side wall of the support frame plate (4) and are threaded onto the side of the air duct body (1); The protective plate (7) consists of several plates, each of which is configured to abut against the corresponding heat insulation plate (3). A connecting component (8) is provided between two adjacent protective plates (7). The front and rear ends of the protective plate (7) are configured to abut against the wing plate (2).

2. The composite air duct with a high-efficiency thermal insulation structure according to claim 1, characterized in that: The connection component (8) includes: Connecting plate (9), there are several connecting plates (9), and they are symmetrically fixed on the side of the protective plate (7), and the connecting plate (9) and the heat insulation plate (3) are fitted together and abutted; Angle plate (10), there are several angle plates (10), and slots (11) are opened on both sides of each angle plate (10). The connecting plate (9) is inserted into the slots (11) and the angle plate (10) is engaged with the wing plate (2). The fixing screws (12) are several in number, and each of them passes through the side wall of the corner plate (10) and is screwed onto the connecting plate (9).

3. The composite air duct with a high-efficiency thermal insulation structure according to claim 2, characterized in that: Both ends of the corner plate (10) are provided with abutment pads (13), which are set to abut against the protective plate (7).

4. The composite air duct with a high-efficiency thermal insulation structure according to claim 1, characterized in that: Sound insulation grooves (14) are provided on the side walls of several protective plates (7), and sound insulation cotton (15) is placed in the sound insulation grooves (14). The sound insulation cotton (15) and the heat insulation plate (3) are arranged in contact.

5. The composite air duct with a high-efficiency thermal insulation structure according to claim 1, characterized in that: The wing plate (2) is provided with a sealing gasket (16) on its side, and the sealing gasket (16) is set to abut against the protective plate (7).

6. The composite air duct with a high-efficiency thermal insulation structure according to claim 1, characterized in that: Several protective plates (7) have reinforcing frames (17) fixed on their outer walls, and the inner walls of the reinforcing frames (17) are provided with support rods (18).

Images