Lightweight high-strength phenolic aldehyde composite air conditioner air duct plate

Abstract

The utility model relates to the technical field of air conditioner ventilation systems, in particular to a light high-strength phenolic aldehyde composite air conditioner air duct plate. The utility model provides a light high-strength phenolic aldehyde composite air conditioner air pipe plate which is of a multi-layer composite structure and comprises an outer protective layer, a reinforcing grid layer, a phenolic aldehyde foam core layer and a lining functional layer from bottom to top, and further comprises a stepped edge connecting structure which comprises a convex part and a concave part which can be wedged with each other. The light weight, high structural strength, high sealing performance, wear resistance, corrosion resistance, sound insulation, noise reduction, moisture resistance, bacteria resistance, heat insulation and fire prevention functions are comprehensively integrated, rapid installation of the plate can be achieved through the stepped edge connecting structure, and tool benefits are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning and ventilation system technology, and in particular to a lightweight, high-strength phenolic composite air conditioning duct plate. Background Technology

[0002] Traditional air conditioning duct panels are mostly made of single-layer metal plates or fiberglass, which have problems such as heavy weight, low installation efficiency, and insufficient sound insulation and fire resistance.

[0003] Phenolic foam is a high-performance insulation material with excellent heat insulation, flame retardancy, and high-temperature resistance, making it promising for applications in fields such as air conditioning duct panels. However, single phenolic foam boards are prone to cracking, have poor edge sealing, and lack structural strength.

[0004] Meanwhile, in existing technologies, the splicing of air conditioning duct panels mostly relies on flanges or glue, which poses a risk of air leakage and affects system energy efficiency.

[0005] Therefore, there is an urgent need for an improved air conditioning duct material that is lightweight, high-strength, and easy to install. Utility Model Content

[0006] To address the aforementioned technical problem of how to obtain a lightweight, high-strength, and easy-to-install improved air conditioning duct material, this utility model provides a lightweight, high-strength phenolic composite air conditioning duct material with a multi-layer composite structure. The multi-layer composite structure includes, from bottom to top, an outer protective layer, a reinforcing mesh layer, a phenolic foam core layer, and an inner lining functional layer. The phenolic foam has adhesive properties during foaming, enabling direct multi-layer composite formation.

[0007] In one embodiment, the outer protective layer is an embossed aluminum foil with a thickness of 0.1 mm to 0.3 mm.

[0008] Furthermore, the embossed aluminum foil surface is also coated with a corrosion-resistant coating.

[0009] In one embodiment, the reinforcing mesh layer is a glass fiber mesh fabric embedded with resin, with a thickness of 0.1 mm to 0.3 mm.

[0010] In one embodiment, the phenolic foam core layer is a closed-cell phenolic foam with a density of 40 kg / m³. 3 ~60 kg / m 3 The thickness is 15 mm to 30 mm.

[0011] In one embodiment, the inner lining functional layer comprises porous sound-absorbing cotton and composite antibacterial nonwoven fabric, with a thickness of 5 mm to 8 mm.

[0012] In one embodiment, the lightweight, high-strength phenolic composite air conditioning duct plate is further provided with an edge connection structure; the edge connection structure includes protrusions and recesses that can wedge into each other.

[0013] Furthermore, both the convex and concave portions are stepped structures, with at least two steps.

[0014] Furthermore, a sealing strip is pre-embedded in the recessed groove.

[0015] Furthermore, both the convex and concave portions are provided with an "L"-shaped metal edging on their outer sides for the fasteners to lock the plate.

[0016] In summary, compared with the prior art, the lightweight and high-strength phenolic composite air conditioning duct plate provided by this utility model has the following beneficial effects:

[0017] (1) Lightweight: Multi-layer composite boards with phenolic foam as the main body are more than 50% lighter than metal boards, which greatly reduces transportation and installation costs;

[0018] (2) High structural strength: The composite glass fiber mesh cloth impregnated with cured resin is used as a reinforcing mesh layer, which improves the bending strength of the phenolic board. In addition, the “L”-shaped metal edging avoids the deformation of the fasteners when locking, resulting in high overall structural strength of the board.

[0019] (3) High sealing performance: The edge of the board is designed with a stepped edge connection structure. Through the tight wedging of the protrusions and concaves between adjacent boards, and with the sealing strips pre-laid in the groove, the double sealing reduces the air leakage rate to less than 1%.

[0020] (4) Multifunctional integration: The multi-layer composite structure also integrates an outer protective layer and an inner lining functional layer. The outer protective layer is mainly composed of embossed aluminum foil coated with a corrosion-resistant coating, which has excellent wear resistance and corrosion resistance. The inner lining functional layer is composed of porous sound-absorbing cotton and composite antibacterial non-woven fabric. The porous sound-absorbing cotton provides sound insulation and noise reduction function, effectively reducing noise by more than 25dB. The composite antibacterial non-woven fabric can effectively prevent moisture and bacteria, and improve the air supply quality.

[0021] (5) Excellent fire resistance: Phenolic foam is non-combustible when exposed to fire, and its combustion performance reaches Class A. In addition, it has good high temperature resistance, fire resistance limit of over 1 hour, low smoke output, excellent resistance to melting and dripping, small deformation after being exposed to fire, and good dimensional stability.

[0022] (6) Quick installation: Based on the edge connection structure with stepped protrusions and concaves, the installation of the plate does not require flange bolts. After precision insertion and wedging, it can be directly fixed with buckles, improving efficiency by 30%. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the multi-layer composite structure of the lightweight, high-strength phenolic composite air conditioning duct plate provided in Embodiment 1 of this utility model.

[0025] Figure 2 This is a schematic diagram of the edge connection structure of the lightweight, high-strength phenolic composite air conditioning duct plate provided in Embodiment 1 of this utility model;

[0026] Figure label:

[0027] Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Example 1

[0031] This embodiment provides a lightweight, high-strength phenolic composite air conditioning duct plate, which has the following characteristics: Figure 1 The multilayer composite structure 100 shown;

[0032] The multi-layer composite structure 100 includes, from bottom to top, an outer protective layer 110, a reinforcing mesh layer 120, a phenolic foam core layer 130, and an inner lining functional layer 140.

[0033] The outer protective layer 110 is an embossed aluminum foil with a thickness of 0.2 mm; in practical use, the embossed aluminum foil can enhance the wear resistance and aesthetics of the board.

[0034] The embossed aluminum foil surface is also covered with a corrosion-resistant coating; in specific use, using embossed aluminum foil with a corrosion-resistant coating as the material of the outer protective layer 110 can further improve the corrosion resistance of the outer protective layer 110.

[0035] The reinforcing mesh layer 120 is a glass fiber mesh 121 embedded with resin 122, with a thickness of 0.2 mm; in practical use, it can improve the bending strength of the board.

[0036] The phenolic foam core layer 130 is a closed-cell phenolic foam with a density of 50 kg / m³. 3 The thickness is 20 mm; in practical use, the closed-cell phenolic foam provides the main body of the board with heat insulation and fireproof performance, and has good anti-melting performance.

[0037] The inner lining functional layer 140 includes porous sound-absorbing cotton 141 and composite antibacterial non-woven fabric 142, with a thickness of 6 mm. In specific use, the porous sound-absorbing cotton 141 can provide sound insulation function and reduce air duct noise, while the composite antibacterial non-woven fabric 142 has antibacterial and mildew-proof function, reducing the impact of humid atmosphere and rainy season on the air supply quality of air conditioning duct.

[0038] The edges of the lightweight, high-strength phenolic composite air conditioning duct plate are also provided with, for example... Figure 2 The edge connection structure 200 shown includes a protrusion 210 and a recess 220 that can wedge into each other. During installation, the protrusion 210 and the recess 220 between adjacent plates can be quickly connected and assembled without flange bolts, which improves the installation efficiency and accuracy of air conditioning ducts.

[0039] Both the protrusion 210 and the recess 220 are stepped structures, with at least two steps.

[0040] A sealing strip 221 is pre-embedded in the recess 220.

[0041] In practical use, the combination of the multi-stage stepped structure and the sealing strip can effectively improve the sealing performance of adjacent panels and reduce the air leakage rate.

[0042] Both the protrusion 210 and the concave portion 220 are provided with an "L"-shaped metal edging 230 on their outer sides for the fasteners to lock the plate. During installation, the "L"-shaped metal edging 230 can provide rigid support for the plate and prevent deformation due to the fasteners locking.

[0043] In this embodiment, preferably, the reinforcing mesh layer is obtained by impregnating and curing a double-sided composite glass fiber mesh with modified epoxy resin.

[0044] In this embodiment, preferably, the porous sound-absorbing cotton is melamine sound-absorbing cotton.

[0045] In this embodiment, preferably, the sealing strip is a black EPDM strip.

[0046] In this embodiment, preferably, the edge of the sheet is pressed into a stepped structure with a width of 6 mm and a height of 6 mm, and the number of steps is 2.

[0047] Example 2

[0048] Based on Example 1, this example provides a lightweight, high-strength phenolic composite air conditioning duct, which is obtained by assembling the following steps:

[0049] Insert the protrusion of the first plate into the concave part of the second plate, lock the plates together with stainless steel clips along the "L"-shaped metal edge, and apply fireproof sealant to the joint.

[0050] Tests have shown that the lightweight, high-strength phenolic composite air conditioning duct system provided in this embodiment has an airtightness that meets the EN1507 standard, a fire resistance limit of over 1 hour, a fire rating of Class A, a noise reduction of over 25 dB, and an air leakage rate of ≤1%. Furthermore, calculations show that the assembly efficiency is improved by 30%, and the weight is reduced by 50% compared to metal plates.

[0051] Although this document frequently uses terms such as lightweight, high strength, sealing, air leakage rate, fire resistance, heat insulation, wedge connection, plug-in, protrusion, recess, stepped structure, multi-layer composite structure, edge connection structure, and "L"-shaped metal edging, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lightweight, high-strength phenolic composite air conditioning duct plate, characterized in that: It has a multi-layered composite structure (100). The multi-layer composite structure (100) includes, from bottom to top, an outer protective layer (110), a reinforcing mesh layer (120), a phenolic foam core layer (130), and an inner lining functional layer (140). The outer protective layer (110) is an embossed aluminum foil with a thickness of 0.1 mm to 0.3 mm; the surface of the embossed aluminum foil is also covered with a corrosion-resistant coating. The inner lining functional layer (140) includes porous sound-absorbing cotton (141) and composite antibacterial nonwoven fabric (142), with a thickness of 5 mm to 8 mm.

2. The lightweight, high-strength phenolic composite air conditioning duct plate according to claim 1, characterized in that: The reinforcing mesh layer (120) is a glass fiber mesh (121) embedded with resin (122) and has a thickness of 0.1 mm to 0.3 mm.

3. The lightweight, high-strength phenolic composite air conditioning duct plate according to claim 1, characterized in that: The phenolic foam core layer (130) is a closed-cell phenolic foam with a density of 40 kg / m³. 3 ~60 kg / m 3 The thickness is 15 mm to 30 mm.

4. The lightweight, high-strength phenolic composite air conditioning duct plate according to claim 1, characterized in that: The lightweight, high-strength phenolic composite air conditioning duct plate is also provided with an edge connection structure (200). The edge connection structure (200) includes a protrusion (210) and a recess (220) that can wedge into each other.

5. The lightweight, high-strength phenolic composite air conditioning duct plate according to claim 4, characterized in that: Both the protrusion (210) and the recess (220) are stepped structures with at least two steps.

6. The lightweight, high-strength phenolic composite air conditioning duct plate according to claim 4, characterized in that: A sealing strip (221) is pre-embedded in the recess (220).

7. The lightweight, high-strength phenolic composite air conditioning duct plate according to claim 4, characterized in that: Both the protrusion (210) and the recess (220) are provided with an "L"-shaped metal edging (230) on the outside for the fastener to lock the plate.

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