CN2932005Y - Composite glass wool duct - Google Patents

Abstract

The utility model provides a composite glass wool wind pipe, which comprises an inner centrifugal glass wool, a middle steel net layer and an outer centrifugal glass wool, wherein the inner centrifugal glass wool and the steel net are combined by caking binder, the outer centrifugal glass wool is fixed on the steel net by clip and snap ring, the clip are connected with the steel net by the blinder, the inner surface of the inner centrifugal glass wool and outer surface of the outer off center glass wool are all pasted with aluminum foil. The utility model is of good heat preservation and wind direction function, but low price. The wind pipe not only saves material and reduces cost, but also decreases the self weight of the wind pipe, which is convenient for transport and construction. The utility model is extensively used in a heating and air conditioning system.

Description

Composite glass wool duct

technical field

The utility model relates to an air duct for HVAC ventilation, in particular to a composite glass wool air duct.

Background technique

With the rapid development of the central air-conditioning system, it is becoming more and more important to overcome the shortcomings or deficiencies of existing equipment and materials, and how to continuously improve and improve its performance while reducing its cost. In today's high steel prices, material saving is the direct embodiment of economy. Air duct is an important part of air conditioning and ventilation equipment, and its material performance and quality are related to the operation effect of the entire ventilation and air conditioning system. The problems in the air duct will cause insufficient air supply and air leakage exceeding the standard, resulting in waste of energy, insufficient heat source and unstable operation of air conditioning and ventilation projects.

At present, the commonly used air ducts in my country mainly include galvanized iron air ducts, inorganic glass air ducts, and composite glass fiber air ducts.

1. Galvanized iron sheet air duct: processed by galvanized iron sheet, it is only suitable for the transportation of general gas with low moisture content. It is easy to rust, has no heat preservation and noise reduction performance, and must be additionally wrapped with an insulation layer and insulation protection layer, and a muffler must be installed , The production and installation cycle is long.

2. Inorganic FRP air duct: Made of glass fiber reinforced inorganic material, with high specific gravity and hardness but brittle, easily deformed by its own weight, easily cracked by the influence and restriction of raw material preparation, and the production and installation period is long. Because of its advantages of fire prevention, anti-corrosion and noise isolation, it once seized most of the air duct market. However, with the passage of time in recent years, people have gradually learned about some weaknesses and shortcomings of inorganic FRP ducts. Such as the actual moisture resistance and the time stability of various quality properties of the product, that is, as time goes by, its performance declines faster than expected, especially its internal quality is greatly affected by the ratio of raw materials, while the actual It is not easy to see from the surface in the project.

3. Composite glass fiber board air duct: take centrifugal glass fiber board with a bulk density of 64kg/m3 and a thickness of 25mm as the base material, with glass fiber cloth inside and moisture-proof aluminum foil cloth outside, compounded and dried with a special fireproof adhesive, and then cut It has the advantages of noise reduction, heat preservation, fire prevention, moisture resistance, small air leakage, light material, easy construction, and saving installation space. However, the cost is high, and it is not suitable for use in places with high ambient humidity, and it is not suitable for making large-sized air ducts.

Contents of the invention

The purpose of the utility model is to provide a composite glass wool air duct. On the premise of not reducing the performance of the air duct, the air duct has the advantages of saving materials, reducing costs, reducing self-weight and convenient installation.

In order to achieve the above purpose, the utility model uses steel wire mesh instead of iron sheet as the inner lining of the air duct, which saves materials and reduces costs; laying ordinary glass wool on the inner and outer surfaces of the steel mesh not only ensures good air guiding performance, but also improves the air duct performance. Thermal insulation and sound deadening effect.

Description of drawings

The structure of the composite glass wool air duct of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Figure 1 is an exploded view of the utility model.

Figure 2 and Figure 3 are cross-sectional views of the structure of the utility model.

Detailed ways

See Figure 1, 3 is a steel wire mesh with a certain strength, which is used as the lining skeleton of the air duct, 1 is the inner layer of centrifugal glass wool, which is laid on the inner wall of the steel wire mesh 3, and the inner layer of centrifugal glass wool 1 and the steel wire mesh are bonded with an adhesive 3 are compounded together, and 5 is the outer layer of centrifugal glass wool, which is laid on the outer wall of the steel wire mesh 3. Referring to FIG. 2 , a layer of aluminum foil 7 is pasted on the inner surface of the inner centrifugal glass wool 1 , and a layer of aluminum foil 6 is pasted on the outer surface of the outer centrifugal glass wool 5 . Inner and outer layers of centrifugal glass wool 1, 5 and a layer of aluminum foil 7, 6 pasted on their surfaces not only improve the heat insulation performance of the air duct, but also play a role in noise reduction. Referring to Fig. 3, the outer layer of centrifugal glass wool 5 laid on the outer wall of the steel wire mesh 3 and pasted with aluminum foil 6 on the surface is fixed by the action of the staple 2 bonded to the steel mesh 3 and the snap ring 4 on the outer surface of the aluminum foil 6. On wire mesh 3. The thickness of the outer layer of centrifugal glass wool 5 is generally set according to the insulation requirements of the air duct and the environmental conditions, the thickness of the inner layer of centrifugal glass wool 1 is less than 20 mm, and the mesh number of the steel wire mesh 3 is less than 20.

Beneficial effect

The composite glass wool air duct of the utility model adopts centrifugal glass wool pasted with a layer of aluminum foil material, which has good thermal insulation and wind guiding performance, and at the same time, the price is much cheaper; steel wire mesh is used instead of galvanized sheet as the lining skeleton, which not only saves materials, reduce the cost, and greatly reduce the weight of the air duct itself, which is convenient for handling and construction.

Claims (3)

1. A composite glass wool air duct comprising an inner layer of centrifugal glass wool (1), a steel wire mesh (3), and an outer layer of centrifugal glass wool (5), characterized in that: the inner layer of centrifugal glass wool (1) and steel wire The net (3) is compounded together by an adhesive, the outer layer of centrifugal glass wool (5) is fixed on the steel wire mesh (3) through the staple (2) and the snap ring (4), and the staple (2) is bonded to the steel wire On the net (3), aluminum foils (7) and (6) are pasted on the inner surface of the inner centrifugal glass wool (1) and the outer surface of the outer centrifugal glass wool (5). 2. The composite glass wool air duct according to claim 1, characterized in that the thickness of the inner centrifugal glass wool (1) is less than 20 mm. 3. The composite glass wool air duct according to claim 1, characterized in that the mesh number of the steel wire mesh (3) is less than 20.