CN107576071A - A kind of wavy metal screen mesh type solar energy air heat collector - Google Patents

Abstract

The invention discloses a metal corrugated wire mesh type solar air heat collector, which comprises a shell, in which a heat collecting plate and a thermal insulation plate are sequentially arranged from a cover plate to a back plate, the cover plate is made of a transparent polycarbonate plate, and the cover plate The outer surface of the outer surface is coated with an anti-ultraviolet layer; the heat collecting plate includes a keel and a multi-layer metal corrugated wire mesh supported by the keel; the upper and lower wall panels of the shell are respectively equipped with top and bottom air outlets, and the upper and lower parts of the insulation board are respectively provided with upper and lower air outlets. The tuyere is connected to the air supply port of a fan through the air pipe; the heat collecting plate is arranged obliquely between the cover plate and the insulation board, and the area between the cover plate and the insulation board is divided into an upper space and a lower space, and the lower space is connected with the lower air outlet . The invention can effectively increase the heat collecting area, and fully utilize the porous medium of the wire mesh to effectively strengthen the air disturbance and enhance the heat transfer effect. It can be widely used in village and town buildings to improve the comfort of farmers' heating in winter and drying crops and wood.

Description

A metal corrugated wire mesh solar air heat collector

technical field

The invention relates to a heat collector, in particular to a solar air heat collector.

Background technique

my country has a large amount of fossil reserves and a huge amount of fossil fuels, so the environmental pollution caused by burning is also very serious. In order to reduce environmental pollution, the use of renewable energy has received more and more attention. Solar energy has received a great deal of attention as a renewable energy source. At the same time, my country has a vast land area and abundant solar energy resources. At the same time, as a clean energy source, solar energy is an environmentally friendly energy source.

Among the many solar energy utilization methods, the solar air collector has the advantages of simple structure, low price, and simple manufacturing process, and has been widely recognized by the public. A solar collector is usually composed of a transparent cover, a heat collector, an insulation board, and an outer shell. Among them, the heat collecting plate plays a vital role and significance to the heat collecting efficiency of the whole heat collector. Metal corrugated wire mesh packing is often used in the chemical industry, and has a good heat transfer effect.

There are many buildings in villages and towns in my country, accounting for 53% of the total buildings. However, due to the backward development level in rural areas, most village buildings still use burning straw and other biological resources as the main heating method in winter, and the room temperature is far from meeting the comfortable requirements. However, as our country continues to promote the construction of new countryside, farmers' living standards continue to improve, and they have higher requirements for comfort, and the heating demand increases accordingly. Solar air collectors are a low-cost, easy-to-install heating method that improves the comfort of residents. At the same time, the solar air collector can also be used as a heating device for drying crops and other items.

Contents of the invention

Aiming at the prior art, the invention provides a metal corrugated wire mesh solar air heat collector, which uses multi-layer metal corrugated wire mesh as a heat collecting plate to absorb heat. Its heat collection effect is remarkable, and it can be applied to winter heating of buildings in northern villages and towns, and drying of crops.

In order to solve the above technical problems, the present invention proposes a metal corrugated wire mesh solar air heat collector, which includes a shell, which is composed of a back plate, surrounding wall plates and cover plates, and the inside of the shell is from the cover plate to the cover plate. The back plate is provided with a heat collecting plate and a heat preservation plate in turn, the heat preservation plate is in contact with the back plate, the cover plate is made of transparent polycarbonate sheet, and the outer surface of the cover plate is coated with an anti-ultraviolet layer; The heat collecting plate includes a keel and a multi-layer metal corrugated wire mesh supported by the keel. The color of the metal corrugated wire mesh is black; The upper part of the thermal insulation board is provided with an upper air outlet, and the upper air outlet runs through the backboard at the same time; The air supply port is connected; the heat collecting plate is obliquely arranged between the cover plate and the heat preservation plate, and the area between the cover plate and the heat preservation plate is divided into an upper space and a lower space, and the lower space communicates with the lower air outlet .

Further speaking, in the metal corrugated wire mesh solar air heat collector of the present invention, both the top tuyeres and the bottom tuyeres are connected to the atmosphere, and the upper tuyeres and the lower tuyeres are connected to the room through pipelines.

The material of the shell is galvanized steel plate, and the back plate of the shell and the surrounding wall plates are provided with an insulating layer, and the insulating layer is made of extruded polystyrene board.

Compared with prior art, the beneficial effect of the present invention is:

The heat collecting plate in the present invention adopts the structure of metal corrugated wire mesh, which can effectively increase the heat collecting area, and make full use of the porous medium of the wire mesh to effectively strengthen the air disturbance and enhance the heat transfer effect. The invention has simple structure and low cost, and can be widely used in village and town buildings to improve the heating comfort of farmers in winter, and can also use the heated air to dry crops and timber.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the metal corrugated screen type solar air heat collector of the present invention;

Fig. 2 is the sectional view of A-A cutting position among Fig. 1;

Fig. 3 is a schematic diagram of the working principle of the heat collector of the present invention.

detailed description

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the described specific embodiments are only for explaining the present invention, and are not intended to limit the present invention.

A metal corrugated screen type solar air heat collector proposed by the present invention includes a shell, and the shell is composed of a back plate, surrounding wall plates and a cover plate 7, as shown in Figures 1 and 2, inside the shell From the cover plate 7 to the back plate, a heat collecting plate 4 and a thermal insulation plate 3 are sequentially arranged, the thermal insulation plate 3 is in contact with the back plate, and the cover plate 7 adopts a transparent polycarbonate sheet material, which has a high transmittance, Light weight and strong impact resistance; the outer surface of the cover plate 7 is coated with an anti-ultraviolet layer to avoid oxidation and discoloration after long-term exposure to the sun; the heat collecting plate includes a keel 41 and a multi-layer Metal corrugated screen 42, the color of the metal corrugated screen 42 is black, which improves the heat collection effect; the upper wall of the shell is provided with a top air port 1, and the lower wall of the shell is provided with a bottom air port 6, and the top air port 1 and the bottom tuyere 6 are all connected to the atmosphere for exchanging fresh air with the outdoor air. The upper part of the thermal insulation board 3 is provided with an upper air outlet 2, and the upper air outlet 2 penetrates the backboard at the same time, and the lower part of the thermal insulation board 3 is provided with a lower air outlet 5, and the lower air outlet 5 penetrates the backboard at the same time, and the upper air outlet 2 and the downwind outlet 5 are connected to the room through pipelines, and are used for indoor air circulation. The lower tuyere 5 is connected to the air supply port of a fan through an air duct; the heat collecting plate 4 is obliquely arranged between the cover plate 7 and the heat preservation plate 3 to divide the area between the cover plate 7 and the heat preservation plate 3 It is an upper space and a lower space, and the lower space communicates with the downwind port 5 . The material of the shell is galvanized steel, which has high strength support and protection. The backboard of the shell and the surrounding wallboards are provided with an insulating layer to prevent heat loss, and the insulating layer is made of extruded polystyrene board.

When the heat collector of the present invention is installed, it should be installed on the sunny side of the house, and try to ensure that there are no large buildings nearby to block the direct sunlight, so that the heat collector can fully contact the sunlight. The upper and lower parts of the back plate of the heat collector are respectively provided with an upper air outlet 2 and a lower air outlet 5, and is connected to an air pipe through a flange, and the air pipe passes through the wall and enters the room for indoor air circulation. In addition, one tuyere (namely top tuyere 1 and bottom tuyere 6) is reserved on the top and bottom of the heat collector for exchanging air with the outside. A blower fan is installed at the air duct of the lower air outlet 5, and an air valve is installed to adjust the air volume.

The working principle of the heat collector of the present invention, as shown in Figure 3, the indoor air enters the heat collector from the lower tuyere 5 under the action of the fan, a part of the air rises along the surface of the metal corrugated screen 42, and the other part passes through the metal corrugated screen 42 pores, exchange heat with it and continue to rise. The two parts of air are heated at the same time, and finally mixed at the top of the collector, and sent into the room through the outlet pipe with the upper air outlet 2.

Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, rather than restrictive. Under the enlightenment of the present invention, many modifications can be made without departing from the gist of the present invention, and these all belong to the protection of the present invention.

Claims (3)

1. a kind of wavy metal screen mesh type solar energy air heat collector, including shell, the shell by backboard, surrounding wallboard and Cover plate (7) is formed, and collecting plate (4) and warming plate (3), the warming plate are sequentially provided with from cover plate (7) to backboard in the shell (3) contacted with the backboard, it is characterised in that the cover plate (7) uses transparent polycarbonate sheet material, the cover plate (7) Outer surface is coated with ultraviolet resistant layer；The collecting plate includes keel (41) and the multiple layer metal corrugation supported by keel (41) Net (42), the color of the wavy metal silk screen (42) is black；The wainscot of shell is provided with top air port (1), under shell Wallboard is provided with bottom tuyeres (6), and the top of the warming plate (3) is provided with uptake (2), the uptake (2) while through the back of the body Plate, the bottom of the warming plate (3) are provided with lower air port (5), the lower air port (5) while run through backboard；The lower air port (5) is logical The air outlet that airduct is crossed with a blower fan is connected；The collecting plate (4) be obliquely arranged on the cover plate (7) and warming plate (3) it Between, be upper space and lower space by region division between cover plate (7) and warming plate (3), the lower space with it is described under Air port (5) connects.

2. wavy metal screen mesh type solar energy air heat collector according to claim 1, it is characterised in that the top air port (1) connected with the bottom tuyeres (6) with air, the uptake (2) and the lower air port (5) pass through pipeline and interior Connection.

3. wavy metal screen mesh type solar energy air heat collector according to claim 1, it is characterised in that the material of the shell Matter uses galvanized steel plain sheet, and the backboard of the shell and the wallboard of surrounding are provided with heat-insulation layer, and the heat-insulation layer uses extruded polystyrene board.