CN202689330U - Building energy-saving daylighting panel - Google Patents

Abstract

The utility model discloses a building energy-saving daylighting board, which at least includes an upper board and a lower board, and the upper board and the lower board are connected through a support body to form a multi-layer board, the upper board and the lower board of the multi-layer board A cavity is formed between the lower plate and the support, and the cavity is filled with transparent heat-insulating _SiO2 airgel particles, the transparent heat-insulating _SiO2 airgel particles are hydrophobic, and the cavity is filled with transparent heat-insulating The outer surface behind the SiO ₂ airgel particles and the end faces of the upper plate, the lower plate and the support body are sealed with a sealing member to form a sealed cavity. Since the convective heat loss and condensation caused by air transmission are greatly reduced, high heat insulation effect and light transmittance can be obtained at the same time, and the transparent and heat-insulating SiO ₂ airgel particles are filled with a small density, which basically does not increase the thickness of the board. The weight is low, and the assembly process is simple, the production efficiency is high, and it is suitable for mass production.

Description

A building energy-saving lighting board

technical field

The utility model relates to the technical field of building energy-saving lighting systems. Specifically relates to a building energy-saving daylighting board filled with transparent heat-insulating _SiO2 airgel.

Background technique

The building volume in my country is large, and building energy consumption accounts for about 1/3 of the total energy consumption. Energy consumption through external doors and windows and daylighting roofs has accounted for about 50% of the energy consumption of the entire building envelope. In order to reduce building energy consumption, on the one hand, it is necessary to improve the thermal insulation performance of the envelope structure, and on the other hand, to maximize the use of sunlight for lighting. The prior art solutions for improving the light-transmitting enclosure structure mainly include the following:

(1) Multi-cavity insulating glass filled with dry air or inert gas;

(2) Insulating glass coated with low-emissivity coating;

(3) Vacuum glass is vacuumized in the middle of insulating glass composed of two or more layers of glass.

However, the thermal insulation performance of the above-mentioned energy-saving glass is not satisfactory. For multi-cavity insulating glass, it brings problems such as weight gain and light transmittance decrease. For the low-emissivity coated insulating glass, the low-emissivity coating blocks the strong solar radiation energy from entering the room in summer to achieve the purpose of heat insulation, and reduces the energy consumption of air-conditioning and cooling in summer to achieve the purpose of energy saving. However, for heating areas like northern my country, the temperature difference between indoor and outdoor is large in winter, and the heat transfer loss through enclosure structures such as exterior doors and windows, daylighting roofs, and glass curtain walls is large. Low-emissivity coatings only block the mid-to-far infrared heat radiation caused by indoor ambient temperature Radiating to the outside to save heating energy consumption, but at the same time, the existence of low-emissivity coating blocks most of the solar radiation energy from entering the room during the day, resulting in failure to effectively use renewable energy to achieve maximum heating and energy saving purposes. For vacuum glass, although it has good light transmission and heat preservation properties, due to high sealing technology requirements, and in practical applications, it is easy to cause air leakage, resulting in a short actual life.

Airgel (aerogel) has low density, high porosity, and extremely low thermal conductivity, which can effectively transmit sunlight and block infrared heat radiation at ambient temperature. For winter heating areas, aerogel is an ideal However, for the hot southern regions in summer, due to its high solar light transmittance, while improving the sunlight lighting, the high solar radiation energy transmission significantly increases the indoor refrigeration and air conditioning. energy consumption.

Utility model content

The technical problem to be solved by the utility model is to provide a high-efficiency building energy-saving lighting board, especially a high-efficiency building energy-saving lighting board suitable for the hot summer in the southern region, which has good heat insulation performance and light transmission performance. It has the advantages of convenient assembly and low cost.

In order to solve the above-mentioned technical problems, the technical solution of the present utility model is that a building energy-saving daylighting panel includes an upper panel and a lower panel arranged in parallel, and the upper panel and the lower panel are connected by a support body to form a multi-layer panel. A cavity including a support is formed between the upper plate and the lower plate of the multi-layer board, and the cavity is filled with transparent heat-insulating SiO ₂ airgel particles.

In the energy-saving daylighting board for buildings, the transparent heat-insulating SiO ₂ airgel particles are hydrophobic, and the contact angle with water is 125°-180°.

The energy-saving lighting board for buildings, the density of the transparent and heat-insulating SiO ₂ airgel is in the range of 50-120kg/m ³ , the pore diameter is in the range of 10-40nm, and the thermal conductivity at room temperature is 0.010-0.018W In the range of /mk, when the thickness of transparent adiabatic SiO ₂ airgel is 15mm, the visible light transmittance is not less than 80%, the near infrared transmittance is not less than 85%, when the thickness is 10mm, the visible light transmittance Not less than 89%, near-infrared transmittance not less than 96%, when the thickness is 5mm, visible light transmittance not less than 95%, near-infrared transmittance not less than 98%.

The energy-saving daylighting panel for buildings described above, the cavity section structure formed by the connection between the upper plate and the lower plate through the support body is a single-cavity square shape, a single-cavity triangular shape, a single-cavity double-triangular shape, a double-cavity Japanese font, double-chamber triangular, double-cavity double-triangular, rice-shaped, three-chamber oral, three-chamber triangular, or three-cavity double-triangle.

In the energy-saving daylighting board for buildings, the upper board and the lower board are connected by a support body to form a multi-layer board, and the multi-layer board is prepared by a hot extrusion process.

In the energy-saving daylighting board for buildings, the upper board and the lower board are connected by a support body to form a multi-layer board, and the material of the multi-layer board is thermoplastic.

As for the building energy-saving daylighting board, the material of the multi-layer board is polycarbonate or polyethylene or polyvinyl chloride or copolymerized thermoplastic resin.

The energy-saving daylighting panel for buildings described above, the edges of the daylighting panel are sealed with sealing members.

The technical effect of the present utility model is that,

(1) The high-efficiency energy-saving lighting board for buildings provided by the utility model realizes the high unity of thermal insulation performance and light transmission performance, and uses transparent thermal insulation SiO ₂ airgel to have an outer surface with extremely low thermal conductivity and a large number of particles The shading effect on solar radiation energy is an ideal energy-saving lighting product in the hot summer in the southern region. While obtaining comfortable indoor lighting effects, it can also block solar radiation energy from entering the room to the greatest extent and reduce air-conditioning and cooling energy consumption;

(2) Through different connection methods between the support body and the upper and lower plates, multi-layer boards with different structures can be obtained, such as the shape of the mouth, the shape of the field, the shape of the rice, etc., in order to obtain comfortable lighting effects and energy saving At the same time, by adopting different support body connection structures, the mechanical properties of the multilayer board are significantly improved.

(3) Fill the cavity in the multi-layer board consisting of at least the upper and lower boards and their supports with hydrophobic transparent and thermally insulating _SiO2 airgel particles, and seal the airgel particles with end seals In the multi-layer board cavity, it solves the problem of easy damage caused by the assembly and use of low-strength and brittle transparent adiabatic SiO ₂ aerogels, greatly improves the engineering practicability of SiO ₂ aerogels, and at the same time improves Improve production efficiency and product yield, and reduce costs;

(4) The provided filled transparent heat-insulating SiO ₂ airgel lighting board does not need to be filled with inert gas, and there is no need to worry about the decline in heat insulation performance caused by gas leakage. It is environmentally friendly, lightweight, flame-retardant, safe, and anti-condensation It has good properties of dew resistance, compression resistance and earthquake resistance, and is especially suitable for glass curtain walls and roof lighting windows of public buildings.

Description of drawings

Fig. 1 is the schematic sectional view of the utility model;

Fig. 2 is a schematic cross-sectional view of the cavity structure type of the multi-layer board of the present invention, a is a single-cavity mouth shape, b is a single-cavity triangular shape, c is a single-cavity double-triangular shape, d is a double-cavity Japanese font, e is a double-cavity triangular shape, f is a double-cavity double-triangular shape, g is a rice-shaped font, h is a three-chamber mouth-shaped font, i is a three-chamber triangular shape, and j is a three-chamber double-triangular shape.

Among them, 1 is the upper plate and the lower plate 1; 2 is the support body; 3 is the transparent heat-insulating SiO ₂ airgel particles.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, but the protection scope is not limited by these embodiments.

Please refer to Fig. 1 , which is an embodiment 1 of the present utility model. The multi-layer daylighting board at least includes an upper board and a lower board 1, and the upper board and the lower board 1 are connected by a support body 2 to form a multi-layer board. A cavity is formed between the upper and lower plates 1 and the support body 2 in the laminate, and the cavity is filled with transparent heat-insulating SiO ₂ airgel particles 3, and the edge of the daylighting plate is sealed with a sealing member. The multi-layer board can effectively reduce air convection heat transfer and solid heat transfer, and partially block solar radiation energy, so that the daylighting board has better thermal insulation performance under the premise of obtaining comfortable lighting effects. In addition, through the setting of the support body, the uniform filling of the transparent thermal insulating SiO ₂ airgel particles can be facilitated, and at the same time, the actual load-bearing of the transparent thermal insulating SiO ₂ airgel particles is greatly reduced, and the low strength in assembly and use is overcome. , Fragile problems, significantly improving the engineering practicability of transparent and insulating _SiO2 airgel particles.

The density of the filled transparent adiabatic SiO ₂ airgel is in the range of 50~120kg/m ³ , which greatly reduces the weight of the whole product; the pore size is in the range of 10~40nm, which is smaller than the average molecular free path of air, making it super Low solid thermal conductivity and gas thermal conductivity make its thermal conductivity at room temperature (25°C) in the range of 0.010~0.018W/mk, giving it a thermal conductivity much lower than that of air; the pore size is 10~40nm Within the range, it can have a good coupling effect with the diameter of the three-dimensional network skeleton, which can reduce Rayleigh scattering and obtain high visible light transmittance. When the thickness is 15mm, the visible light transmittance is not less than 80%, and the near-infrared The transmittance is not less than 85%. When the thickness is 10mm, the visible light transmittance is not less than 89%. The near infrared transmittance is not less than 96%. When the thickness is 5mm, the visible light transmittance is not less than 95%. %, the near-infrared transmittance is not less than 98%, thus achieving a high degree of uniformity in thermal insulation performance and light transmission performance. At the same time, the transparent thermal insulation SiO ₂ airgel board is hydrophobic, and the contact angle with water is 125°-180° , can guarantee better waterproof effect.

Fig. 2 is a multi-layer board formed by connecting the upper board and the lower board 1 through supports 2 of different structures. Depending on the connection structure of the support body, the cross-sectional structure of the multi-layer board can be a single-cavity mouth shape, a single-cavity triangle shape, a single-cavity double-triangle shape, a double-cavity Japanese-shaped shape, a double-cavity triangle shape, a double-cavity double-triangle shape, Shapes such as rice-shaped, three-chamber mouth-shaped, three-chamber triangular, or three-chamber double-triangular. With the above structure, under the premise of ensuring the light transmission lighting effect and heat insulation effect, the mechanical properties and load-bearing capacity of the multi-layer board are significantly improved. The multi-layer board of the utility model is prepared by a hot extrusion process. The materials used are thermoplastics, including polycarbonate or polyethylene or polyvinyl chloride or copolymerized thermoplastic resins.

The building energy-saving daylighting panel in this embodiment has very good heat insulation performance, the heat transfer coefficient can be as low as 0.5W/m ² k, and it also has a high visible light transmittance, which can maximize the lighting performance and save lighting use electricity. In the hot summer in the southern region, in addition to achieving effective lighting, it can also make full use of blocking solar heat radiation from entering the house, reducing energy consumption for air conditioning and cooling. And without using thick, expensive three-layer or four-layer insulating glass and vacuum glass that requires strict vacuum sealing technology, the performance of the heat insulation cup of the outer door and window glass can be significantly improved, and there is no need to fill inert gas, so there is no need to worry The problem of thermal insulation performance decline and condensation caused by gas leakage is environmentally friendly, lightweight, flame retardant, safe, anti-condensation, compression, and earthquake resistance, and is especially suitable for glass curtain walls and daylighting in the field of public buildings. roof etc.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the utility model. within the scope of protection.

Claims (8)

1. A building energy-saving daylighting panel, comprising an upper plate and a lower plate arranged in parallel, a multi-layer board is formed by connecting the upper board and the lower board through a support body, and a multi-layer board is formed between the upper board and the lower board of the multi-layer board. A cavity comprising a support body, characterized in that the cavity is filled with transparent heat-insulating SiO ₂ airgel particles. 2. A building energy-saving daylighting panel according to claim 1, characterized in that, the transparent heat-insulating SiO ₂ airgel particles are hydrophobic, and the contact angle with water is 125°-180°. 3. A building energy-saving daylighting panel according to claim 1 or 2, characterized in that the density of the transparent adiabatic SiO ₂ airgel is in the range of 50-120kg/m ³ , and the pore diameter is in the range of 10-40nm Inside, the thermal conductivity at room temperature is in the range of 0.010~0.018W/mk, when the thickness of the transparent thermal insulating SiO ₂ airgel is 15mm, the visible light transmittance is not less than 80%, and the near infrared transmittance is not less than 85% %, when the thickness is 10mm, the visible light transmittance is not less than 89%, the near-infrared transmittance is not less than 96%, when the thickness is 5mm, the visible light transmittance is not less than 95%, and the near-infrared transmittance is not less than 96%. Not less than 98%. 4. A building energy-saving daylighting panel according to claim 1, characterized in that, the cavity section structure formed by the connection between the upper plate and the lower plate through the support body is a single-cavity mouth-shaped, single-cavity Triangular, single-chamber double-triangle, double-chamber Japanese, double-chamber triangular, double-chamber double-triangle, rice-shaped, three-chamber mouth-shaped, three-chamber triangle or three-chamber double-triangle. 5. A building energy-saving daylighting board according to claim 1 or 4, characterized in that, the upper board and the lower board are connected by a support body to form a multi-layer board, and the multi-layer board is formed by heat prepared by extrusion process. 6. A kind of building energy-saving daylighting board according to claim 1 or 4, is characterized in that, forms a multi-layer board by connecting between said upper board and lower board through support body, and the material of described multi-layer board is thermoplastic. 7. A building energy-saving daylighting board according to claim 6, characterized in that the material of the multi-layer board is polycarbonate or polyethylene or polyvinyl chloride or copolymerized thermoplastic resin. 8. The building energy-saving daylighting panel according to claim 1, wherein the edge of the daylighting panel is sealed with a sealing member.

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