CN201903193U - Gravity heat pipe type flat-plate solar heat collector - Google Patents

Abstract

The utility model relates to a gravity heat pipe type solar panel heat collector, comprising a heat-absorbing plate core, a header, a frame, a back plate and a cover plate, a cover plate is installed on the surface of the heat-absorbing plate core, and the heat-absorbing plate The back of the core is connected with a back plate, the header is fixedly connected to the heat-absorbing plate core, and a frame is arranged around the heat collector, and the frame around the heat collector is connected to the heat-absorbing plate core and the back plate. A thermal insulation layer is arranged between them, and the heat-absorbing plate core is provided with gravity heat pipes and heat-absorbing fins, and the gravity heat pipes and heat-absorbing fins are connected into one body, and the heat-absorbing fins are connected to each other to form a whole plate , The utility model has the advantages of: the antifreeze performance of the flat plate heat collector is enhanced, heat loss is reduced, and the heat collection efficiency of the flat plate heat collector is greatly improved.

Description

A Gravity Heat Pipe Solar Flat Panel Heat Collector

technical field

The utility model relates to the technical field of solar energy, in particular to a gravity heat pipe type solar panel heat collector.

Background technique

Solar collectors are divided into two categories: vacuum glass tube solar collectors and flat panel solar collectors from the heat collection method. Vacuum glass tube solar collectors have the advantages of high efficiency and good frost resistance, but the overall structural strength is poor, so they are not suitable for installation on building facades.

Flat plate solar collectors have the advantages of beautiful appearance, good overall structural strength, low cost, convenient installation and use, and easy integration with building facades, etc., but their frost resistance is relatively poor, and their heat collection performance is not high in low temperature environments.

Solving the lack of antifreeze performance of flat solar collectors, so that the flat solar collectors can be easily installed on building facades is the key to the urbanization of solar heat utilization.

Utility model content

The technical problem to be solved by the utility model is to provide a solar panel heat collector with good antifreeze performance and high heat collection efficiency in a low temperature environment.

In order to overcome the defects in the background technology, the technical solution adopted by the utility model to solve the technical problem is: a gravity heat pipe solar flat panel collector, including a heat absorbing plate core, a header, a frame, a back plate and a cover plate , the surface of the heat-absorbing plate core is equipped with a cover plate, the back of the heat-absorbing plate core is connected with a back plate, the header is fixedly connected with the heat-absorbing plate core, and the surrounding of the heat collector is provided with The frame, the heat-absorbing plate core is provided with gravity heat pipes and heat-absorbing fins, the gravity heat pipes and heat-absorbing fins are connected into one body, and the heat-absorbing fins are connected to each other to form a whole plate.

According to another embodiment of the present utility model, a gravity heat pipe type solar panel heat collector further includes that the gravity heat pipe and the heat absorbing fins are welded or expanded.

According to another embodiment of the present utility model, a gravity heat pipe type solar panel heat collector further includes twelve gravity heat pipes arranged on the heat absorbing plate core.

According to another embodiment of the utility model, a gravity heat pipe solar panel collector further includes that the material of the gravity heat pipe is oxygen-free copper.

According to another embodiment of the present invention, a gravity heat pipe type solar panel heat collector further includes that the gravity heat pipe is filled with distilled water.

According to another embodiment of the present utility model, a gravity heat pipe type solar panel heat collector further includes a thermal insulation layer arranged between the frame and back of the heat collector and the core of the heat-absorbing plate.

According to another embodiment of the present utility model, a gravity heat pipe type solar panel heat collector further includes that the heat-absorbing fins are connected by son-mother grooves.

According to another embodiment of the present utility model, a gravity heat pipe type solar panel heat collector further includes that the surface of the heat absorbing fin is coated with blue titanium by magnetron sputtering.

According to another embodiment of the present utility model, a gravity heat pipe type solar panel collector further includes that the cover plate is a glass cover plate or an organic cover plate.

According to another embodiment of the present invention, a gravity heat pipe solar panel collector further includes that the surface of the cover plate opposite to the heat-absorbing fins is in the shape of a concave-convex texture.

The utility model solves the defects in the background technology, enhances the antifreeze performance of the flat heat collector, reduces heat loss, and greatly improves the heat collection efficiency of the flat heat collector.

Description of drawings

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

Fig. 1 is the structural representation of the preferred embodiment of the present utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is an enlarged view of A in Fig. 1, that is, a structural schematic diagram of a heat pipe and fins;

Fig. 4 is an enlarged view of B in Fig. 1, that is, a schematic cross-sectional view of a heat pipe and a fin;

FIG. 5 is an enlarged view of C in FIG. 1 , that is, a schematic diagram of a connection structure between heat-absorbing fins.

Among them: 1. Heat-absorbing plate core, 2. Header, 3. Frame, 4. Back plate, 5. Glass cover plate, 6. Gravity heat pipe, 7. Mother and child grooves, 8. Heat-absorbing fins.

Detailed ways

Now in conjunction with accompanying drawing and preferred embodiment the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figure 1-2, a gravity heat pipe solar flat panel collector includes a heat absorbing plate core 1, a header 2, a frame 3, a back plate 4 and a glass cover plate 5, and the heat absorbing plate core 1 A cover plate 5 is installed on the surface, a back plate 4 is connected to the back of the heat-absorbing plate core 1, the header 2 is fixedly connected to the heat-absorbing plate core 1, and a frame 3 is arranged around the heat collector, The heat-absorbing plate core 1 is provided with a gravity heat pipe 6 and a heat-absorbing fin 8 , the gravity heat pipe 6 and the heat-absorbing fin 8 are connected into one body, and the heat-absorbing fins 8 are connected with each other to form a whole plate.

As shown in Figure 3-4, the utility model adopts the gravity heat pipe 6 to be applied to the flat plate heat collector. The gravity heat pipe 6 is arranged inside the heat-absorbing fin 8 and connected with the heat-absorbing fin 8 as a whole. Expansion joints are used to connect the gravity heat pipe 6 and the header pipe 2 by direct welding with a special process, which can reduce thermal resistance and improve heat transfer efficiency; the gravity heat pipe 6 is made of oxygen-free copper, and the gravity heat pipe 6 is filled with distilled water , the liquid filling volume is 1-10ml, and the inner cavity volume of the gravity heat pipe 6 should correspond to the liquid filling volume. The use of the gravity heat pipe 6 changes the original water flow heat exchange method to the heat pipe phase change heat method, which greatly reduces heat loss and improves heat transfer efficiency, so that the flat plate collector can maintain high heat collection efficiency in the low temperature area. Moreover, due to the "thermal diode" effect of the gravity heat pipe 6, the antifreeze problem of the flat plate heat collector is completely solved.

As shown in Figure 5, the heat-absorbing fins 8 of the utility model are buckled into a whole board through the sub-compartment slots 7, so that the heat migration on the surface of the heat-absorbing plate core 1 is lower, thereby ensuring that the heat loss of the heat collector is lower few.

Twelve gravity heat pipes 6 are arranged on the heat-absorbing plate core 1 of the utility model, which replaces the design of seven flow channels in the existing flat plate heat collector, and overcomes the problem of insufficient transmission power of the gravity heat pipes in the low temperature area.

The frame 3 around the flat plate heat collector of the utility model and the heat-absorbing plate core 1 and the back are provided with a thermal insulation layer. They adopt polyurethane foaming as a whole, which eliminates thermal bridges, reduces heat loss, and greatly improves heat collection. Heat collection efficiency; the surface of the heat-absorbing fin 8 is coated with magnetron sputtering blue titanium, the heat absorption rate is 95%±2%, the emissivity is lower than 4%, the performance is stable, and the service life is as long as 50 years; the heat collection The cover plate 5 of the device is made of low-iron, textured, tempered glass. The high light transmittance and diffuse reflection of the texture make a greenhouse effect between the heat-absorbing plate core and the glass inner cavity, and the tempering makes the strength higher and is not easy to damage.

The working principle of the gravity heat pipe type flat solar heat collector described in this utility model is: sunlight shines on the heat absorbing plate core 1 through the cover plate 5, and at this time, the heat absorbing fins 8 start to absorb heat energy, and the heat energy passes through the gravity heat pipe 6 Transfer to the working medium in the header 2, so that the cold working fluid entering from the collector inlet is heated by solar energy in the header 2, and the temperature gradually rises, and the heated hot working fluid flows out from the collector outlet. Flow into the water storage tank for use.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (10)

1. gravity assisted heat pipe formula plate solar collector, comprise heat-absorbing plate core (1), collector (2), frame (3), backboard (4) and cover plate (5), the surface of described heat-absorbing plate core (1) is equipped with cover plate (5), the back of described heat-absorbing plate core (1) is connected with backboard (4), fixedly connected between described collector (2) and the heat-absorbing plate core (1), be provided with frame (3) around the described heat collector, it is characterized in that: described heat-absorbing plate core (1) is provided with gravity assisted heat pipe (6) and heat absorption fin (8), described gravity assisted heat pipe (6) links into an integrated entity with heat absorption fin (8), is interconnected to a whole plate between the described heat absorption fin (8).

2. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: adopt welding or expanded joint between described gravity assisted heat pipe (6) and the heat absorption fin (8).

3. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1, it is characterized in that: described heat-absorbing plate core (1) is provided with 12 gravity assisted heat pipes (6).

4. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1, it is characterized in that: the material of described gravity assisted heat pipe (6) is an oxygen-free copper.

5. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: fill in the described gravity assisted heat pipe (6) and be provided with distilled water.

6. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: be provided with the insulation layer between frame of described heat collector (3) and back and the heat-absorbing plate core (1).

7. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: adopt mother-son groove (7) to connect between the described heat absorption fin (8).

8. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: the blue titanium plated film of magnetron sputtering is adopted on the surface of described heat absorption fin (8).

9. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: described cover plate (5) is glass cover-plate or organic cover plate.

10. a kind of gravity assisted heat pipe formula plate solar collector as claimed in claim 1 is characterized in that: described cover plate (5) face relative with heat absorption fin (8) is concavo-convex woven design shape.

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