CN202281395U - Solar energy air heat collector - Google Patents

Abstract

The utility model discloses a solar air heat collector, which comprises: a header, a frame, a cover glass, a heat-absorbing plate core and a back plate, the header is horizontally arranged at the upper and lower ends of the heat collector, and the collector The tube is fixedly connected with the core of the heat-absorbing plate, the surrounding of the heat collector is provided with a frame, the surface of the heat collector is provided with a cover glass, the back of the heat collector is provided with a back plate, and the heat-absorbing plate The core is arranged between the cover glass and the back plate, and the heat-absorbing plate core is formed by connecting multiple multi-channel heat-absorbing cores. Through the above method, the solar air collector of the utility model optimizes the structure of the heat-absorbing core, directly heats the air, reduces heat loss and heat migration, has a simple process, reduces equipment costs, improves heat collection efficiency, and can output a higher temperature. High air can be used in building heating and fresh air, industrial and agricultural drying and other fields.

Description

A solar air collector

technical field

The utility model relates to the technical field of solar heat collectors, in particular to a solar air heat collector. the

Background technique

With the increasing awareness of energy conservation and environmental protection in the whole society, solar energy has attracted widespread attention as a clean, low-cost, and sustainable energy source. Among them, solar air collectors have broad application prospects in technical fields such as building heating, fresh air, and industrial and agricultural drying. Compared with the traditional solar water heating process, the use of solar air collectors can improve heat collection efficiency, reduce initial investment in equipment, shorten payback period, reduce heat transfer ratio, avoid secondary heat exchange, and solve problems such as frozen pipes in winter. the

Among the existing patents, CN2129904Y discloses a solar air heater, in which metal shavings are sprayed with black blackboard paint to form a heat absorber to absorb solar radiation and heat the air in the chamber. But, the blackboard paint that its described heat absorber adopts is poor to the absorptivity of solar radiation and emissivity performance, and heat absorber is pressed molding of metal shavings, and the flow resistance to air is bigger. the

CN101666551B discloses a double-layer glass vacuum heat collector tube solar high-temperature air heater, which heats air through the double-layer glass vacuum heat collector. However, the complex structure of the heat collector is unfavorable for processing and is prone to leakage. the

CN101755174A discloses a solar air heater for heating airflow, which extends the length of the flow channel through a three-channel design, and adopts a double heat collector plate structure to improve heat collection efficiency. However, the double heat collectors are parallel to each other and will affect each other's absorption of solar radiation. The three flow channels are parallel to each other, which will increase heat migration and reduce heat collection efficiency. the

Summary Existing solar air heat collectors usually have complex structures, low heat collection efficiency, and it is difficult to increase the air temperature, which limits the application and value of solar air heat collectors. It is usually necessary to increase the air temperature by extending the length of the heating section or using a practical concentrating device, which will greatly increase the cost of the equipment. Therefore, the key to solar air collectors is to optimize the structure of the heat-absorbing core, reduce heat loss and heat migration, improve heat collection efficiency and reduce equipment costs. the

Utility model content

The technical problem mainly solved by the utility model is to provide a solar air heat collector with high heat collection efficiency, simple process, low cost and capable of outputting relatively high temperature. the

In order to solve the above-mentioned technical problems, a technical solution adopted by the utility model is to provide a solar air heat collector, including: a header, a frame, a cover glass, a heat-absorbing plate core and a back plate, and the header is arranged horizontally At the upper and lower ends of the heat collector, the header is fixedly connected to the heat-absorbing plate core, a frame is arranged around the heat collector, a cover glass is arranged on the surface of the heat collector, and the heat collector There is a back plate on the back of the cover, and the heat-absorbing plate core is arranged between the cover glass and the back plate, and the heat-absorbing plate core is formed by connecting multiple multi-channel heat-absorbing cores. the

In a preferred embodiment of the present invention, the multi-channel heat-absorbing core includes a female hasp, a fluid channel, a heat-absorbing fin and a male hasp, and the female hasp, a fluid channel, a heat-absorbing fin and a male hasp The buckle is integrally pultruded by aluminum to form a multi-channel heat-absorbing core. the

In a preferred embodiment of the present invention, the plurality of multi-channel heat-absorbing cores form a heat-absorbing plate core through the snap-in connection of the female buckle and the male buckle. the

In a preferred embodiment of the present invention, the medium inside the fluid channel is air. the

In a preferred embodiment of the present invention, the cross-section of the fluid channel is elliptical, wherein the long axis of the ellipse is parallel to the direction of the core surface of the heat-absorbing plate, and the short axis of the ellipse is perpendicular to the direction of the core surface of the heat-absorbing plate. axis. the

In a preferred embodiment of the utility model, the cross section of the fluid channel is circular, rectangular or triangular.

In a preferred embodiment of the present invention, the surface of the heat-absorbing plate core is coated with a selective absorption coating, and the selective absorption coating is blue titanium or black chrome coating. the

In a preferred embodiment of the present invention, an insulation layer is provided between the frame and the heat-absorbing plate core, and an insulation layer is provided between the back plate and the heat-absorbing plate core. the

In a preferred embodiment of the present invention, the cover glass is a high-transmittance textured glass or an organic plate. the

The beneficial effects of the utility model are: the solar air heat collector of the utility model optimizes the structure of the heat-absorbing core, directly heats the air, reduces heat loss and heat migration, has a simple process, reduces equipment costs, and improves heat collection efficiency. It can output air with higher temperature, which can be used in building heating and fresh air, industrial and agricultural drying and other fields. the

Description of drawings

Fig. 1 is the structural representation of a preferred embodiment of the utility model solar air heat collector;

Fig. 2 is a structural representation of a preferred embodiment of the utility model solar air heat collector cross-section;

Fig. 3 is a structural schematic diagram of a preferred embodiment of the heat-absorbing plate core of the solar air heat collector of the present invention. the

The marks of the components in the drawings are as follows: 1. Header, 2. Insulation layer, 3. Frame, 4. Cover glass, 5. Heat-absorbing plate core, 6. Back plate, 7. Female buckle, 8. Fluid Channel, 9, heat-absorbing fins, 10, male hasp. the

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly . the

Please refer to Fig. 1 to Fig. 3, the utility model embodiment comprises:

A kind of solar air heat collector, comprising: manifold 1, frame 3, cover plate glass 4, heat-absorbing plate core 5 and back plate 6, described manifold 1 is horizontally arranged on the upper and lower ends of heat collector, and described The header pipe 1 is fixedly connected with the heat-absorbing plate core 5, a frame 3 is arranged around the heat collector, a cover glass 4 is arranged on the surface of the heat collector, and a back plate 6 is arranged on the back of the heat collector , the heat-absorbing plate core 5 is arranged between the cover glass 4 and the back plate 6, and the heat-absorbing plate core 5 is formed by connecting multiple multi-channel heat-absorbing cores. the

The multi-channel heat-absorbing core includes a female hasp 7, a fluid channel 8, a heat-absorbing fin 9 and a male hasp 10, and the female hasp 7, a fluid channel 8, a heat-absorbing fin 9 and the male hasp 10 pass through The aluminum material is integrally formed to form a multi-channel heat-absorbing core. The heat conduction effect of aluminum material is good, which can effectively improve the efficiency of heat absorption and heat conduction; the integral molding technology improves the structural strength, reduces the migration and loss of heat, and improves the efficiency of heat collection. the

The medium inside the fluid channel 8 is air, and the cross section of the fluid channel 8 is elliptical, wherein the major axis of the ellipse is parallel to the direction of the heat-absorbing plate core 5 plate surface, and the one perpendicular to the direction of the plate surface of the heat-absorbing plate core 5 is an ellipse. short axis, which can improve the heat transfer performance of the air in the fluid passage 8. the

The cross section of the fluid channel 8 can also be rectangular, circular, triangular or other various shapes. Specifically, the cross section of the fluid channel 8 has various shapes with similar structures, so that actual production can be performed according to specific application requirements, and the application range is wide. the

The plurality of multi-channel heat-absorbing cores form a heat-absorbing plate core 5 through the snap-in connection of the female buckle 7 and the male buckle 10 . The heat-absorbing plate core 5 adopts the integral molding process of aluminum material, the elliptical air flow channel, and also adopts the enhanced heat transfer technology and 360° heat transfer structure, which reduces the shielding of the fluid channels 8 from each other on solar radiation and reduces the heat dissipation. Migration and heat loss increases heat collection efficiency and air temperature. the

In the utility model, the plurality of multi-channel heat-absorbing cores can also be connected with each other by using buckles. In this way, the purpose of reducing heat migration and heat loss on the surface of the heat-absorbing plate core 5 can also be achieved, and the heat collection efficiency is improved. the

The surface of the heat-absorbing plate core 5 adopts magnetron sputtering coating technology, which greatly improves the heat collection efficiency; the surface of the heat-absorbing plate core 5 is also coated with a selective absorbing coating, and the selective absorbing coating is blue titanium coating or The black chrome coating improves the conversion efficiency of light and heat, greatly improves the heat absorption efficiency, effectively transfers heat to the air, and increases the temperature of the air. the

A gap is provided between the heat-absorbing plate core 5 and the cover glass 4 . An insulating layer 2 is arranged between the frame 3 and the heat-absorbing plate core 5, and an insulating layer 2 is arranged between the back plate 6 and the heat-absorbing plate core 5. The insulating layer 2 adopts an integral foaming process, which improves the The overall structural strength reduces heat loss and improves heat collection efficiency. the

The cover glass 4 is high light-transmitting textured glass or an organic plate, which improves the absorption of solar radiation energy and improves the heat collection efficiency. the

The working process of the solar air heat collector of the utility model is: air flows into the heat collector from the header 1 at one end, and in the process of the air flowing through the medium flow channel composed of the heat-absorbing plate core 5 and the header 1, due to The blue titanium or black chrome selective absorption coating on the surface of the heat-absorbing plate core 5 can efficiently absorb solar radiation, convert the radiant energy into heat energy, and pass the heat conduction of the heat-absorbing plate core 5 and the air in the ellipse of the heat-absorbing plate core 5 The convective heat transfer inside the flow channel effectively transfers heat to the air, increasing the temperature of the air. The hot air flows out of the heat collector from the header 1 at the other end, and is used for building heating, fresh air, industrial and agricultural drying and other fields. the

The beneficial effects of the solar air heat collector of the present utility model are:

a. The heat-absorbing core adopts the integral pultrusion molding process of aluminum to improve the structural strength and reduce heat migration and heat loss;

b. The fluid channel 8 of the heat-absorbing core adopts an oval cross-section and a 360° heat transfer structure to improve heat collection efficiency and air temperature;

c. The long axis of the elliptical section is parallel to the direction of the heat-absorbing plate core 5, and the short axis is perpendicular to the direction of the heat-absorbing plate core 5, reducing the mutual shielding of the fluid channels 8 to solar radiation;

d. The surface of the heat-absorbing plate core 5 adopts magnetron sputtering coating technology, which greatly improves the heat collection efficiency; the surface of the heat-absorbing plate core 5 is coated with blue titanium or black chrome selective absorption coating, which improves the light-to-heat conversion efficiency;

e. The insulation layer 2 adopts the overall foaming process to improve the overall structural strength and reduce heat loss;

f. The heat collector directly heats the air, improves the heat collection efficiency, and solves the problem of flat-plate winter frozen pipes. the

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way. the

Claims (9)

1. solar energy air heat collector; It is characterized in that, comprising: collector, frame, cover-plate glass, heat-absorbing plate core and backboard, said collector are horizontally installed on the two ends up and down of heat collector; Said collector is fixedly connected with heat-absorbing plate core; Be provided with frame around the said heat collector, the surface of said heat collector is provided with cover-plate glass, and the back side of said heat collector is provided with backboard; Said heat-absorbing plate core is arranged between cover-plate glass and the backboard, and said heat-absorbing plate core is formed by connecting a plurality of multichannel heat exchanger cores.

2. solar energy air heat collector according to claim 1; It is characterized in that; Said multichannel heat exchanger core comprises female hasp, fluid passage, heat absorption fin and public hasp, and said female hasp, fluid passage, heat absorption fin and public hasp form the multichannel heat exchanger core through the whole pultrusion of aluminium.

3. solar energy air heat collector according to claim 2 is characterized in that, said a plurality of multichannel heat exchanger cores are through the formation heat-absorbing plate core that is connected of female hasp and public hasp.

4. solar energy air heat collector according to claim 2 is characterized in that, the inner medium in said fluid passage is an air.

5. solar energy air heat collector according to claim 2 is characterized in that the cross section of said fluid passage is ellipticity, wherein is parallel to the transverse that is of absorber plate central layer face direction, and perpendicular to absorber plate central layer face direction is ellipse short shaft.

6. solar energy air heat collector according to claim 5 is characterized in that, the cross section of said fluid passage is also rounded, rectangle or triangle.

7. solar energy air heat collector according to claim 1 is characterized in that, the selective absorber coatings of said heat-absorbing plate core surface-coated, and said coating for selective absorption is blue titanium or black chrome coating.

8. solar energy air heat collector according to claim 1 is characterized in that, is provided with a heat-insulation layer between said frame and the heat-absorbing plate core, is provided with a heat-insulation layer between said backboard and the heat-absorbing plate core.

9. solar energy air heat collector according to claim 1 is characterized in that, said cover-plate glass is high printing opacity woven design glass or organic plates.

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