CN204388388U - A kind of adjustable solar air collector - Google Patents

Abstract

An adjustable solar air heat collector, including a core body (1), a light-absorbing surface a (1-1), a light-absorbing surface b (1-2), a reflective surface (1-3), and vent holes (1- 4), helical gear (2), transverse support rod (3), longitudinal fixing groove (4), longitudinal support rod (5), transverse fixing groove (6), control rod (7), air inlet (8), Air outlet (9), thermal insulation shell (10), double-layer glass cover plate (11), exhaust fan (12). The adjustable solar air heat collector of the utility model adopts this structure, which can effectively utilize the heat collecting area, and at the same time achieve the purpose of high-efficiency heat collection through flexible adjustment.

Description

An adjustable solar air heat collector

technical field

The utility model belongs to the technical field of natural resources—solar heat utilization, and in particular relates to a flexibly adjustable solar air heat collector.

Background technique

The solar air collector is a solar heating device that uses air as the heat transfer medium, and is widely used in solar heating, ventilation, dehumidification and other fields. Compared with solar collectors that use liquid as a heat-conducting medium, it has the advantages of simple structure, low sealing requirements, and no need for antifreeze, but there are still problems such as low heat collection efficiency and large heat loss. Exploit technology bottlenecks.

Contents of the invention

The purpose of the utility model is to improve the deficiencies of the existing solar air heat collectors, thereby providing an adjustable solar air heat collector with simple structure, high heat collection efficiency.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the main body of the heat collector is a box body, which mainly includes several core cores, support rods, heat preservation shells and transparent cover plates, the front of the box body It is a double-layer transparent glass cover, several core heat-absorbing cores are located side by side in the middle of the box, and the whole box is divided into two chambers, the front and the back. Air port and air outlet, the core core in the middle is a triangular prism module made of heat-absorbing thin plates. The core includes a heat-absorbing surface and a reflective surface. Several core cores are connected in series and fixed in the box through support rods.

The surface corresponding to the longest side of the triangular prism core body is the reflective surface, which is coated with selective radiation coating such as polyethylene terephthalate (PET) coating, and the other two surfaces are heat-absorbing surfaces , coated with selective absorbing coatings such as black chrome plating, and several ventilation holes are provided on the heat absorbing plate and reflecting plate.

The core core adjusts the helical gear by rotating the control rod to promote the movement of two phase-staggered axes in the space to control the angle and orientation of the core core.

The utility model adopts different operation strategies in winter and summer. In winter, by increasing the heat collection area, the room can be heated during the day and kept warm at night. In summer, the heat load can be reduced through the selective radiation surface and the room can be cooled at night. It is conducive to improving indoor thermal comfort and reducing energy consumption of heating and air conditioning in buildings. Therefore, the utility model effectively solves the problems of low heat collection efficiency in winter and overheating in summer of solar air heat collectors currently on the market through flexible adjustment.

Description of drawings

Fig. 1 is a structural schematic diagram of an adjustable solar air heat collector of the present invention.

Figure 2 is the schematic diagram of the winter working condition.

Figure 3 is the schematic diagram of summer working conditions

In the figure: 1 core body, 1 -1 light-absorbing surface a, 1-2 light-absorbing surface b, 1-3 reflective surface, 1-4 vent hole, 2 helical gear, 3 horizontal support rod, 4 longitudinal fixing groove, 5 longitudinal Support rods, 6 horizontal fixing slots, 7 control rods, 8 air inlets, 9 air outlets, 10 thermal insulation shells, 11 double-layer glass cover plates, and 12 rows of fans.

specific implementation plan

As shown in Figures 1 to 3, the adjustable solar air heat collector in this embodiment has a main body as a box, and several core cores 1 are arranged in series in the box, and the core cores 1 are connected in series by transverse support rods 3. Fixed in the longitudinal fixing groove 4, the core core is a triangular prism composed of light-absorbing surface a1-1, light-absorbing surface b1-2 and reflecting surface 1-3, the area of light-absorbing surface a1-1 is larger than the area of light-absorbing surface 1-2 , at the same time, the angle α between the light-absorbing surface a1-1 and the reflecting surface 1-3 is determined in the range of 20-40° according to factors such as the illumination angle, in order to obtain the best thermal efficiency, the light-absorbing surface a1-1, the light-absorbing surface b1-2 Several air holes 1-4 are provided on the reflective surface 1-3, the front of the box is a double-layer glass cover plate 11, and an exhaust fan 12 is provided on the top, and the heat preservation shell 10 at the rear of the box is provided with Air inlet 8 and air outlet 9. In order to improve the heat absorption efficiency of the core body, the utility model is coated with a selective absorption coating on the surface of the light-absorbing plate 2-1 and the light-absorbing plate 2-2 of the core core of the triangular prism, and the surface of the reflecting plate 2-3 is coated with a selective radiation coating. The rear part of the utility model is a heat-insulating shell, which adopts high-temperature-resistant heat-insulating materials such as rubber and plastic materials, which is conducive to air heat preservation after heating.

In winter working conditions, as shown in Figure 1, adjust the helical gear 2 by rotating the control lever, turn the light-absorbing surface a2-1 and light-absorbing surface b2-2 of the core body 1 outward to absorb solar radiation, and open the air inlet 8 at the same time and the air outlet 9, close the exhaust fan 12, the indoor cold air flows into the air flow channel from the air inlet 8, continuously rises through the thermosiphon effect and is heated into hot air, and then flows into the room through the air inlet 9 for circulation and ventilation. Improve the indoor air temperature, so as to achieve the purpose of saving building energy consumption.

In summer working conditions, as shown in Figure 3, by rotating the control lever to adjust the helical gear 2, the reflective surface 2-3 of the core body 1 is turned outward, so that most of the solar radiation projected on the surface during the day is reflected back , to reduce radiation heat transfer and heat conduction heat transfer; on the other hand, open the air inlet 8 and exhaust fan 12, close the air outlet 9, and use the chimney effect to discharge the air in the air channel to the outside under the action of outdoor wind pressure and heat pressure. To reduce the indoor cooling load.

Claims (1)

1. an adjustable solar air collector, it is characterized in that: the main body of this heat collector is a casing, having in case by several is that the core core body (1) of triangular prism to be connected by transverse support bar (3) and is fixed on the longitudinal fixed groove of body side, this core core body (1) comprises extinction face a(1-1), extinction face b(1-2) and reflecting surface (1-3), wherein extinction face a(1-1) and extinction face b(1-2) on scribble Selective absorber coating, reflective surface (1-3) scribbles selective radiation coating, and extinction face a(1-1) area is greater than extinction face b(1-2) area, simultaneously, extinction face a(1-1) and reflecting surface (1-3) between angle α be 20 ~ 40 ° according to factor determination scopes such as lighting angles, extinction face a(1-1), several air vents (1-4) that extinction face (1-2) and reflecting surface (1-3) are provided with, core core body (1) by pivoting lever (7) drive helical gear (2) motor adjustment its towards and angle, it is Double-layered transparent cover plate (11) before described casing, double glazing cover plate (11) is provided with a ventilating fan (12), casing rear portion is the insulation shell (10) adopting exotic material, insulation shell (10) upper, under be respectively equipped with an air inlet (8) and a gas outlet (9).