CN201508056U - Flat-plate solar collector - Google Patents

Abstract

A flat-plate solar heat collector relates to a heat collector. The utility model solves the problems that the board core of the existing solar heat collector is expensive, the heat collection effect is poor, and the existing heat collector wastes a lot of heat energy due to the lack of joint. The inner wall around the rectangular frame is provided with a frame insulation layer, the insulation layer is arranged on the upper end surface of the bottom plate and is located in the rectangular frame, the water inlet pipe and the water outlet pipe are arranged in the rectangular frame along the length direction, and a plurality of stainless steel pipes are arranged in parallel. Between the water inlet pipe and the water outlet pipe, one end of each stainless steel pipe communicates with the water inlet pipe, and the other end of each stainless steel pipe communicates with the water outlet pipe. A heat collecting plate is fixed between two adjacent stainless steel pipes, and the heat collecting plate The upper surface of the heat-absorbing plate is coated with a heat-absorbing coating, and the cross-section of the heat-collecting plate is in the shape of an arc. The cross-section of the heat collecting plate of the utility model is arc-shaped, the heat absorbing area is large, the heat collecting effect is good, and the utilization rate of heat energy is improved; the utility model also has the advantages of simple structure, reliable operation and low cost.

Description

Flat-plate solar collector

technical field

The utility model relates to a solar heat collector.

Background technique

Solar energy is an inexhaustible clean energy. Under the premise of today's increasingly tense energy sources, the widespread application of solar energy has attracted widespread attention. Solar collectors are constantly developing in our country. At present, there are two main forms of commonly used products: 1. Vacuum glass tube type; 2. Copper-aluminum composite tube-sheet type. However, the solar heat collectors of the above two forms have the following disadvantages: one, the core of the solar heat collector is expensive, and the heat collection effect is poor; two, the existing heat collectors waste a large amount of heat energy due to loose joints.

Utility model content

The purpose of the utility model is to solve the problem that the plate core of the existing solar heat collector is expensive, the heat collection effect is poor, and the existing heat collector wastes a lot of heat energy due to the lack of joint, and then provides a Flat-plate solar collectors.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: the flat-plate solar collector described in the utility model includes a cover plate, a rectangular frame, a frame insulation layer, a water inlet pipe, a water outlet pipe, a plurality of stainless steel pipes, a heat absorbing Coating, thermal insulation layer and bottom plate, the heat collector also includes a plurality of heat collector plates, the rectangular frame is horizontally fixed on the upper end surface of the bottom plate, a frame thermal insulation layer is arranged on the inner wall around the rectangular frame, and the thermal insulation layer is set On the upper end surface of the bottom plate and located in the rectangular frame, the water inlet pipe and the water outlet pipe are arranged in the rectangular frame along the length direction of the rectangular frame, and a plurality of stainless steel pipes are arranged in parallel between the water inlet pipe and the water outlet pipe, and one end of each stainless steel pipe It is connected with the water inlet pipe, and the other end of each stainless steel pipe is connected with the water outlet pipe. A heat collecting plate is fixed between two adjacent stainless steel pipes. The upper surface of the heat collecting plate is coated with a heat absorbing coating. The cross section of the hot plate is in the shape of an arc, two first through holes are opened on the side wall of the rectangular frame, and two second through holes connected with the two first through holes of the rectangular frame are opened on the frame insulation layer. One end of the water inlet pipe passes through one of the two second through holes and one of the two first through holes in turn and communicates with the outside world, and one end of the water outlet pipe passes through the other of the two second through holes in turn The other one of the two first through holes communicates with the outside world, the cover plate is fixed on the upper end surface of the rectangular frame, and the cover plate and the bottom plate 10 are both hollow glass.

The beneficial effects of the utility model are: the cross-section of the heat collecting plate of the utility model is arc-shaped, the heat absorbing area is large, and the upper surface of the heat collecting plate is coated with a heat absorbing coating, and sunlight shines through the hollow glass to The surface is coated with a heat-absorbing coating on the heat-collecting plate, most of the solar radiation energy is absorbed by the heat-collecting plate, converted into heat energy, and the heat energy is transferred to the liquid in the stainless steel tube, and the heat-collecting effect is good; the solar energy of the utility model The heat collector is provided with an insulating layer and the cover plate, the rectangular frame and the bottom plate are tightly combined, thereby saving a lot of heat energy and improving the utilization rate of heat energy; the utility model also has the advantages of simple structure, reliable operation, low cost, and strong pressure bearing capacity. Can withstand two atmospheres of pressure.

Description of drawings

Fig. 1 is a front sectional view of the utility model, and Fig. 2 is an A-A sectional view of Fig. 1 .

Detailed ways

Embodiment 1: As shown in Figures 1 and 2, the flat-plate solar collector described in this embodiment includes a cover plate 1, a rectangular frame 2, a frame insulation layer 3, an inlet pipe 4, an outlet pipe 5, and a plurality of stainless steel Tube 6, heat-absorbing coating 8, thermal insulation layer 9 and base plate 10, the heat collector also includes a plurality of heat collecting plates 7, the rectangular frame 2 is horizontally fixed on the upper end surface of the base plate 10, and the surrounding area of the rectangular frame 2 The inner wall of the frame is provided with a frame insulation layer 3, the insulation layer 9 is arranged on the upper surface of the bottom plate 10 and is located in the rectangular frame 2, and the water inlet pipe 4 and the water outlet pipe 5 are arranged in the rectangular frame 2 along the length direction of the rectangular frame 2. Two stainless steel pipes 6 are arranged in parallel between the water inlet pipe 4 and the water outlet pipe 5, one end of each stainless steel pipe 6 communicates with the water inlet pipe 4, the other end of each stainless steel pipe 6 communicates with the water outlet pipe 5, and two adjacent stainless steel pipes A heat collecting plate 7 is fixed between the 6, and the upper surface of the heat collecting plate 7 is coated with a heat absorbing coating 8. The cross section of the heat collecting plate 7 is in the shape of an arc. There are two first through holes 2-1, two second through holes 3-1 connected with the two first through holes 2-1 of the rectangular frame 2 are opened on the frame insulation layer 3, the water inlet pipe 4 One end passes through one of the two second through holes 3-1 and one of the two first through holes 2-1 in turn and communicates with the outside world, and one end of the outlet pipe 5 passes through the two second through holes 3-1 in turn. The other one of 1 and the other one of the two first through holes 2-1 communicate with the outside world, the cover plate 1 is fixed on the upper end surface of the rectangular frame 2, and the cover plate 1 and the bottom plate 10 are both hollow glass. The utility model has a simple structure, and the heat collecting plate 7 can be produced on a large scale with stainless steel sheets and stainless steel pipes with lower prices. The utility model is a heat collecting device capable of withstanding water pressure and air pressure.

Embodiment 2: As shown in Figures 1 and 2, the heat-absorbing coating 8 in this embodiment is a black chrome coating. Such setting can make the heat collecting plate absorb more heat energy. Other components and connections are the same as those in the first embodiment.

Embodiment 3: As shown in Figures 1 and 2, the water inlet pipe 4 and the water outlet pipe 5 in this embodiment are all stainless steel pipes. Stainless steel tubes are used for good heat transfer performance. Other compositions and connections are the same as those in Embodiment 1 or 2.

Embodiment 4: As shown in Figures 1 and 2, the heat collecting plate 7 of this embodiment is a stainless steel plate. Stainless steel plate is selected for good heat transfer performance. Other compositions and connections are the same as those in Embodiment 1 or 2.

The working principle of the flat-plate solar heat collector described in the utility model: water enters the stainless steel pipe 6 and the water outlet pipe 5 from the water inlet pipe 4, and the sunlight shines through the transparent cover plate 1 to the surface coated with the heat-absorbing coating 8. On a plurality of heat collecting plates 7, most of the solar radiation energy is absorbed by the heat collecting plates 7, converted into heat energy, and the heat energy is transferred to the liquid in the stainless steel tube 6 through the heat collecting plate 7, and the temperature of the liquid in the stainless steel tube 6 is After rising gradually, the liquid in the stainless steel pipe 6 flows out through the outlet pipe 5, and is stored in the water storage tank for use.

Claims (4)

1. flat-plate solar heat collector, described heat collector comprises cover plate (1), rectangular shaped rim (2), frame heat-insulation layer (3), water inlet pipe (4), outlet pipe (5), a plurality of stainless steel tubes (6), heat absorbing coating (8), heat-insulation layer (9) and base plate (10), it is characterized in that: described heat collector also comprises a plurality of thermal-arrest plates (7), described rectangular shaped rim (2) level is packed on the upper surface of base plate (10), rectangular shaped rim (2) inwall all around is provided with frame heat-insulation layer (3), heat-insulation layer (9) is arranged on the upper surface of base plate (10) and is positioned at rectangular shaped rim (2), water inlet pipe (4) and outlet pipe (5) are arranged in the rectangular shaped rim (2) along the length direction of rectangular shaped rim (2), a plurality of stainless steel tubes (6) are set in parallel between water inlet pipe (4) and the outlet pipe (5), one end of each stainless steel tube (6) is communicated with water inlet pipe (4), the other end of each stainless steel tube (6) is communicated with outlet pipe (5), be fixed with a thermal-arrest plate (7) between adjacent two stainless steel tubes (6), scribble heat absorbing coating (8) on the upper surface of thermal-arrest plate (7), the cross section of described thermal-arrest plate (7) is a circular shape, have two first through holes (2-1) on one sidewall of rectangular shaped rim (2), have two second through holes (3-1) that are connected with two first through holes (2-1) of rectangular shaped rim (2) on the frame heat-insulation layer (3), one end of water inlet pipe (4) passes in two second through holes (3-1) and two first through holes (2-1) successively and is in communication with the outside, one end of outlet pipe (5) pass successively in another and two first through holes (2-1) in two second through holes (3-1) another and be in communication with the outside, cover plate (1) is packed on rectangular shaped rim (2) upper surface, and described cover plate (1) and base plate (10) are double glazing.

2. flat-plate solar heat collector according to claim 1 is characterized in that: described heat absorbing coating (8) is a black chrome coating.

3. flat-plate solar heat collector according to claim 1 and 2 is characterized in that: described water inlet pipe (4) and outlet pipe (5) are stainless steel tube.

4. flat-plate solar heat collector according to claim 1 and 2 is characterized in that: thermal-arrest plate (7) is a corrosion resistant plate.

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