CN201191056Y - Solar thermal pressure ventilation roofing - Google Patents

Abstract

The utility model discloses a solar energy thermal pressure ventilation roof, which comprises a roof substrate and a thermal pressure ventilation layer provided on the roof substrate, composed of a plurality of large step brick ventilation plates and provided with a plurality of bottom air inlets, wherein the thermal pressure ventilation layer is provided with a plurality of upper air outlets communicated with the bottom air inlets. The solar energy thermal pressure ventilation roof is provided with bottom air inlets and upper air outlets having convection with each other, to utilize solar energy thermal pressure theory, to discharge the hot air accumulated in the thermal pressure ventilation layer to discharge much hot air, improve the ventilation thermal insulation property of the roof and reduce the energy consumption of temperature reduction of top building.

Description

Solar heat press ventilation roof

technical field

The utility model relates to a ventilated roof, in particular to a ventilated roof applied with solar thermal pressure, which belongs to the field of building structures.

Background technique

The proportion of building energy consumption in my country's total energy consumption is very large, about 25%-40%. There is still a considerable gap compared with developed countries in the world. For example, the enclosure structure of most areas in my country The thermal functionality is much worse than that of developed countries with similar climates. The heat transfer coefficient of the outer wall is 3.5-4.5 times that of them, that of the outer window is 2-3 times, and that of the roof is 3-6 times; and the energy consumption per unit building area is even lower. It is very high, and the energy utilization rate is still very low, only 28%, the average in Europe and the United States is nearly 50%, and Japan is 57%. However, the available energy in our country is extremely limited, which has attracted great attention from our country. As a kind of building envelope, the heat consumption of indoor and outdoor temperature difference heat transfer is greater than that of any external wall or ground. In hot-summer and warm-winter regions, the sunshine duration is long in summer and the intensity of solar radiation is high. Usually, the comprehensive air temperature on the outer surface of the horizontal roof reaches 50-70°C, and the indoor temperature on the top floor is 2-4°C higher than the indoor temperature on the lower floor. The roofs of traditional buildings in the southern region adopt a certain form of heat insulation, such as large-step brick ventilated roofs. The top layer is closed and connected, with only the vents at the lower part of the large-step bricks. The air in the ventilated roof of the large-step bricks does not circulate, which is only equivalent to a closed air space. The heat insulation effect is not good, so the air conditioner on the top floor consumes a lot of power , a toasty feeling is common. The thermal insulation performance of this roof needs to be improved urgently. Therefore, improving the thermal insulation performance of ventilated roofs is particularly important for improving the ability to resist outdoor heat in summer in the southern region. This is also an important measure to reduce air-conditioning energy consumption and improve the indoor thermal environment.

Contents of the invention

The purpose of this utility model is to aim at the deficiencies of the prior art, to provide a solar thermocompression ventilated roof with good air convection, which can discharge the hot air accumulated in the roof in time, which effectively solves the problems of the existing traditional large-step brick ventilated roof. Problems with poor air circulation and poor insulation.

In order to achieve the above object, the utility model adopts the following technical solutions:

The solar thermal press ventilation roof includes a roof structure base, above which is provided a heat press ventilation layer composed of several large brick ventilation panels and having several bottom air inlets, and the heat press ventilation layer is provided with several The upper air outlet connected to the bottom air inlet.

The base layer of the above-mentioned roof structure is composed of a structural layer, a leveling layer, a waterproof layer, a heat insulation layer and a protective layer in sequence from bottom to top.

The above-mentioned upper air outlet is an upper bent pipe air outlet arranged on the ventilation plate of the large-step brick.

The above-mentioned upper air outlet can also be an upper bar-shaped air outlet arranged on the ventilation plate of the large-step brick.

The above-mentioned structural layers are reinforced concrete structural layers, or light steel structural layers, or professional steel structural layers.

The above-mentioned leveling layer is a cement mortar leveling layer.

The above-mentioned waterproof layer is a waterproof coiled material, or a waterproof coating film.

The above-mentioned heat insulation layer is an extruded board layer.

The above-mentioned protective layer is a cement mortar layer provided with non-woven fabrics.

The solar thermocompression ventilated roof of the utility model has a convective bottom air inlet and an upper air outlet, and uses the principle of solar thermocompression to discharge the accumulated hot air in the thermocompression ventilation layer in time, taking away a large amount of air. The hot air improves the ventilation and heat insulation performance of the roof and reduces the cooling energy consumption of the top floor building.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the utility model embodiment 1;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is the three-dimensional structure schematic diagram of the utility model embodiment 2;

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

Detailed ways

Example 1

As shown in Figures 1 and 2, the solar thermocompression ventilation roof described in the utility model is composed of a roof construction base 1 and a thermocompression ventilation layer 2 arranged on the roof construction base 1, wherein the roof construction base 1 is from bottom to top. The upper part is composed of structural layer 11, leveling layer 12, waterproof layer 13, heat insulation layer 14 and protective surface layer 15, that is, the solar thermal pressure ventilation roof described in the utility model is composed of structural layer 11, leveling layer from bottom to top. Layer 12, waterproof layer 13, heat insulation layer 14, face protection layer 15 and hot press ventilation layer 2.

Further, the heat and pressure ventilation layer 2 is composed of several large-step brick ventilation panels 21 spliced together. Several supporting feet 211 are provided under each side of the large-step brick ventilation panels 21, which makes the large-step brick ventilation panels 21 compatible with the roof structure. An interlayer through which air can circulate is formed between the base layers 1 , and several bottom air inlets 22 are formed between the supporting feet 211 . Further, the hot press ventilation layer 2 is provided with several upper air outlets 23 communicating with the bottom air inlets 22, specifically, the upper air outlets 23 are upper bent pipe air outlets arranged on the large-step brick ventilation plate 21, in order to To improve the air fluidity in the thermocompression ventilation layer 2, each large step brick ventilation panel 21 of the thermocompression ventilation layer 2 is provided with an upper bent pipe air outlet, but in the case of meeting the application requirements, the thermocompression ventilation Layer 2 can evenly set upper bent pipe air outlets on some of the large-step brick ventilation panels 21 . The upper bent tube type air outlet can be integrally formed on the large-step brick ventilation plate 21, or can be installed on the large-step brick ventilation plate 21 (at this time, the large-step brick ventilation plate 21 needs to offer installation holes) for independent parts.

Further, the above-mentioned structural layer 11 is a reinforced concrete structural layer, or a light steel structural layer, or a professional steel structural layer; the above-mentioned leveling layer 12 is a cement mortar leveling layer, and its thickness is 20mm, and the cement mortar ratio is 1:2.5; The above-mentioned waterproof layer 13 is a waterproof coiled material, or a waterproof coating film; the above-mentioned insulation layer 14 is an extruded board layer; the above-mentioned protective layer 15 is a cement mortar layer provided with non-woven fabrics, and its thickness is 20mm. The ratio is 1:2.5.

The utility model is further described below by application principle:

As shown in Figures 1 and 2 (solid line arrows represent sunlight among the figure, dotted line arrows represent air flow direction), sunlight irradiates on the solar thermocompression ventilation roof, and the large step brick ventilation plate 21 on the thermocompression ventilation layer 2 is heated , heat the air in the interlayer of the heat press ventilation layer 2, the air is heated and expands and rises, a large amount of hot air is discharged from the upper air outlet 23, taking away a large amount of heat, and at the same time, cold air from all directions is replenished from the lower air inlet 22 Into the interlayer of the heat press ventilation layer 2, the temperature in the interlayer is further reduced. The so-called thermal pressure is caused by the temperature difference between the inside and outside of the roof, which is the so-called "chimney effect". Due to the existence of temperature difference, the inner and outer density difference is generated, and a pressure gradient appears along the vertical direction of the roof. If the temperature inside the roof air compartment is higher than the outside temperature, there will be higher pressure on the upper part of the roof and lower pressure on the lower part. Air enters from the lower part where there is an air inlet at a lower pressure, and flows out from the upper part. When the air flows out, a lot of heat is carried out. At the same time, the roof air interlayer also has a certain heat insulation effect. Thereby greatly reducing the heat into the room. In summer, the temperature difference between the inner and outer surfaces of the roof can reach 20-25°C, while the temperature of the inner surface of the top floor roof adopting the utility model can be maintained below 30°C.

Example 2

As shown in Figure 3, the upper air outlet 23 in this embodiment is the upper strip air outlet located on the large brick ventilation plate 21, and several window-like air outlets are arranged on both sides of the upper strip air outlet 231. Other structures of this embodiment are as described in Embodiment 1.

Claims (9)

1. The solar thermal press ventilation roof, including the roof structure base, is characterized in that, above the roof structure base, there is a heat press ventilation layer composed of several large-step brick ventilation panels with several bottom air inlets, and the heat press ventilation The layer is provided with several upper air outlets communicating with the bottom air inlets. 2. The solar heat press ventilation roof according to claim 1, characterized in that: the roof structure base layer is sequentially composed of a structural layer, a leveling layer, a waterproof layer, a heat insulation layer and a protective layer from bottom to top. 3. The solar thermal press ventilation roof according to claim 1, characterized in that: the upper air outlet is an upper bent pipe air outlet arranged on the large-step brick ventilation board. 4. The solar thermal press ventilation roof according to claim 1, characterized in that: the upper air outlet is an upper bar-shaped air outlet arranged on the large-step brick ventilation board. 5. The solar heat press ventilation roof according to claim 2, characterized in that: the structural layer is a reinforced concrete structural layer, or a light steel structural layer, or a professional steel structural layer. 6. The solar thermal pressure ventilated roof according to claim 2, characterized in that: the leveling layer is a cement mortar leveling layer. 7. The solar thermal pressurized ventilated roof according to claim 2, characterized in that: the waterproof layer is a waterproof coiled material, or a waterproof coating film. 8. The solar thermal press ventilation roof according to claim 2, characterized in that: the heat insulation layer is an extruded board layer. 9. The solar heat press ventilation roof according to claim 2, characterized in that: the protective surface layer is a cement mortar layer provided with non-woven fabrics.

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