CN102061782B - Water-storage dual-layer heat preservation and heat insulation roof brick - Google Patents

Abstract

A water-storage double-layer heat-insulating roof brick, comprising: a face brick (1) with strip-shaped openings (4) and anti-slip grooves (5), opposite vertical side walls (2) and cofferdam side walls (9) and clapboard (3) encircle a water storage tank (6), the cavity (7) on the upper part of the water storage tank (6) is communicated with the atmosphere front and back, and the bottom cavity (8) is formed by the opposite upright sides on both sides. The wall (2) and the partition (3) are enclosed, and the lower part of the bottom cavity (8) is freely open, and the front and rear communicate with the atmosphere.

Description

Water-storage double-layer thermal insulation roof brick

technical field

The invention relates to a double-layer heat-preservation and heat-insulation roof brick which comprehensively utilizes the principles of water storage evaporation cooling and air space layer heat insulation.

Background technique

Building energy conservation has become a major strategic issue in our country. The National Development and Reform Commission listed "Building Energy Conservation" as one of the "Top Ten Energy Conservation Projects". Carrying out energy conservation renovation of existing residential and public buildings in cities is one of the important tasks of building energy conservation renovation in my country. Its goal is to complete the reconstruction area in large cities 25%, 15% for medium-sized cities, and 10% for small cities. On this basis, by 2020, the energy-saving transformation of most existing buildings will be realized. During the "Twelfth Five-Year Plan" period, one of the key points of strategic research on scientific and technological development planning in the field of housing and urban-rural construction: the complete set of technology and function improvement of existing buildings. Roof renovation is one of the key parts of energy-saving renovation of existing buildings. Since the roof receives the strongest direct solar radiation and has the longest effect time, the heat gain of the roof accounts for a relatively large proportion (generally about 40%) of the total heat gain of the top floor rooms. Therefore, strengthening and improving the thermal insulation capacity of the roof is conducive to improving the indoor thermal environment of the top floor room, saving energy consumption of air conditioning, and has certain social and economic benefits. Therefore, the development and research of thermal insulation roof bricks with good thermal insulation performance and convenient construction meet the requirements of scientific and technological development planning in the field of housing and urban and rural construction, and are of great significance for accelerating the improvement of the thermal insulation function of roof bricks.

At present, the commonly used roof insulation method is insulation material insulation, through the use of loose material insulation layer (expanded perlite, expanded vermiculite, etc.), plate material insulation layer (polymer material foam board, expanded perlite board, etc.) and overall insulation layer (cement expanded perlite, asphalt expanded perlite, etc.) to achieve the purpose of thermal insulation. Due to the complex construction process and relatively long construction period, as well as the inherent defects of these materials, the actual application effect of these thermal insulation materials in various construction projects often fails to meet the technical requirements of the "Technical Specifications for Roof Engineering" (GB 50345-2004) Require. However, due to the relatively high price of these insulation materials, it is difficult to promote them in building energy-saving renovation. The heat insulation performance of the existing building roof is improved. Through the comparison of the construction period, the degree of impact on the residents and the economic benefits, it can be seen that the laying of finished roof bricks has the advantages of quick construction, less disturbance to residents and saving social resources.

Chinese patent application No. 200310114098 discloses a new type of material roof tile and its roof, which is characterized in that the roof tile is a new type of material with impermeability and excellent reflective heat insulation performance; its roof adopts external waterproof reflective heat insulation technology and internal The thermal insulation technology belongs to the field of industrial and civil construction. The roof brick and its waterproof reflective insulation layer are above the roof leveling (slope) layer, and the insulation layer is below the roof structure layer. The roof tile is suitable for selection of new houses. Due to the complex construction process and long construction period, it is not suitable for the renovation of old houses. Chinese patent application No. 200520056702.8 discloses a roof tile. The technical problem to be solved is to improve the thermal insulation and heat radiation resistance of the roof tile. It has a structural layer. The surface of the structural layer is provided with an insulating layer. The surface layers are connected to form a composite layer structure. In energy-saving retrofit buildings, the decorative surface layer of roof tiles is a secondary factor, and because the structural requirements are indispensable, the cost is relatively high, so it is not conducive to popularization.

Contents of the invention

In view of the special meteorological characteristics of non-heating areas and the characteristics of energy-saving renovation of existing buildings, the purpose of the present invention is to provide a roof brick with good thermal insulation performance that can be assembled on site.

The basic idea of the present invention is: collect rainwater and store a certain height of rainwater in the water storage tank, and use the natural evaporation of rainwater to take away a large amount of radiant heat in summer when the solar radiation is strong. Natural ventilation is enhanced in summer when the solar radiation is strong; the air interlayer formed by the lower cavity is a very thin air layer, and the air interlayer is used to further enhance the thermal insulation effect.

The technical scheme adopted in the present invention is: a water storage double-layer thermal insulation roof brick, with strip-shaped openings and anti-skid grooves on the surface brick, and the upright side walls on both sides, the side walls of the cofferdam and the partitions to form a Water storage tank, the upper cavity of the water storage tank is connected to the atmosphere front and rear, the bottom cavity is surrounded by upright side walls and partitions on both sides, the lower part of the bottom cavity is free to open, the front and rear are connected to the atmosphere, and the strip-shaped openings It is a rainwater collection hole. The bottom cavity forms an insulating air layer with the roof. The upper cavity of the water storage tank runs through the front and back and communicates with the atmosphere. The bottom cavity runs through the front and rear and communicates with the atmosphere. hole.

A further solution is: in the case of no rain for a long time, you can artificially sprinkle water on the roof tiles to keep a certain amount of water in the water storage tank.

The invention has the advantages that: the roof brick comprehensively utilizes the technology of evaporative cooling, natural ventilation and air interlayer heat resistance, and the reasonable structural form makes the double-layer roof brick have good thermal insulation performance. After the roof tiles are laid, the heat transfer from the roof is greatly reduced. After laying the roof tiles, the indoor roof temperature of the room on the top floor is 2~3℃ lower than before the renovation, reducing the cooling load of the air conditioner.

The roof tile can be produced on a large scale and assembled on site, has a simple construction process, can shorten the construction period, has simple management, and can be recycled and reused after the roof tile is removed. The perfect theoretical system of thermal insulation technology makes the roof brick practical and popular in the energy-saving renovation of existing buildings in non-heating areas.

Description of drawings

This specification includes the following four drawings: Figure 1 is an axonometric view of a water-storage double-layer heat-insulating roof brick. Fig. 2 is a top view of a water-storage double-layer heat-insulating and heat-insulating roof brick, and A and B are the cut-off symbols of the view. Fig. 3 is a sectional view along line A-A in Fig. 2. Fig. 4 is a sectional view along the line B-B in Fig. 2. In the figure: 1. Face brick, 2. Upright side wall, 3. Partition board, 4. Strip opening, 5. Anti-slip groove, 6. Water storage tank, 7. Upper cavity, 8. Lower cavity, 9. The side wall of the cofferdam.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is further described: as Fig. 1, Fig. 2, Fig. 3 and Fig. 4, bar-shaped perforation 4 and antiskid groove 5 are arranged on face brick 1, and the upright edge wall 2 that both sides are opposite and surrounding The weir side wall 9 and the dividing plate 3 surround a water storage tank 6, the upper cavity 7 of the water storage tank 6 communicates with the atmosphere front and back, and the bottom cavity 8 is surrounded by the opposite upright side walls 2 and the dividing plate 3 on both sides. The lower part of the bottom cavity 8 is freely open, and the front and rear are connected to the atmosphere. After laying on the roof, the bottom cavity 8 and the roof form an insulating air layer, and the strip-shaped openings 4 are rainwater collection holes. Hole 4 to the bar.

Collect rainwater and store a certain height of rainwater in the water storage tank. In the summer with strong solar radiation, the natural evaporation of rainwater is used to take away a large amount of radiant heat; Natural ventilation; the air space formed by the lower cavity is a very thin air layer, and the air space further strengthens the thermal insulation effect.

When it does not rain for a long time, you can manually sprinkle water on the roof tiles to keep a certain amount of water in the water storage tank.

Claims (4)

1. A water-storing double-layer heat-insulating roof brick, characterized in that the roof brick includes: a strip-shaped opening (4) and an anti-slip groove (5) on the facing brick (1), and vertical side walls opposite to each other (2) surrounds a water storage tank (6) with the cofferdam side wall (9) and the dividing plate (3). The upper cavity (7) of the water storage tank (6) communicates with the atmosphere front and rear, and the bottom cavity (8 ) is surrounded by upright sidewalls (2) and partitions (3) facing each other on both sides, and the lower part of the bottom cavity (8) is freely open, and the front and back communicate with the atmosphere. 2. The water-storage double-layer thermal insulation roof tile according to claim 1, characterized in that the strip-shaped openings (4) are rainwater collection holes, and the bottom cavity (8) forms an insulating air layer with the roof. 3. The water-storage double-layer heat-insulating roof tile according to claim 1, characterized in that the upper cavity (7) of the water storage tank (6) runs through the front and back, communicates with the atmosphere, and the bottom cavity (8) runs through the front and back, Connected with the atmosphere. 4. The water-storage double-layer thermal insulation roof brick according to claim 1, characterized in that the upper part of the facing brick (1) has a certain slope, and the slope faces the strip-shaped opening (4).

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