CN201138087Y - Concentrating solar collector - Google Patents

Abstract

The utility model discloses a concentrating solar heat collector, which comprises a heat collecting device, a heat preservation bottom plate and a light-transmitting cover body. The light-transmitting cover body is sealed and installed on the heat preservation bottom plate. Space, a concentrating plate with a continuous arc-shaped reflective surface is installed on the thermal insulation bottom plate of the confined space, and a heat collecting device is arranged above the concentrating plate; the reflective surface of the concentrating plate of the utility model is a continuous arc-shaped surface, which greatly improves solar energy collection The heat collection efficiency of the heater, the overall structure is a sealed structure, the heat loss of the system is minimized, and the pump body can adjust the flow rate of the medium, so as to realize the control of the system temperature to meet the demand for heat in different situations.

Description

Concentrating solar collector

technical field

The utility model relates to a solar heat utilization device, in particular to a concentrating solar heat collector.

Background technique

With the rapid development of the economy, energy shortage has become a bottleneck restricting the economic development of various countries. As a clean energy source, solar energy is favored by countries all over the world as an inexhaustible source of energy. With the continuous development of solar energy technology, many product technologies are quite mature, such as solar cookers, which are simple in structure, high in boiling water and cooking efficiency, and widely used; The light is gathered into a point or a relatively small plane, and the heat collection efficiency is low. There are also some shortcomings in the structural design, such as a more complicated structure and a correspondingly high cost.

Utility model content

The purpose of the utility model is to provide a concentrating solar heat collector with high heat collection rate, small heat loss, simple structure and controllable temperature.

In order to achieve the above purpose, the utility model adopts the following technical solutions: the concentrating solar heat collector includes a thermal insulation base plate and a light-transmitting cover body, and the light-transmitting cover body is sealed and installed on the heat preservation base plate. A closed space is formed, and a concentrating plate with a continuous arc-shaped reflective surface is installed on the thermal insulation floor of the closed space, and a heat collecting device is arranged above the concentrating plate.

The heat collecting device includes a heat collecting pipe, a water inlet pipe and a water outlet pipe. The outside of the light-transmitting cover body is connected with the pipeline installed with the pump body.

The heat collecting tubes of the heat collecting device are located on the focal line corresponding to the curved reflective surface of the light collecting plate.

The outer layer of the heat collecting pipe, the water inlet pipe and the water outlet pipe is coated with a heat absorbing film layer.

With the concentrating solar heat collector with the above structure, the continuous arc reflective surface of the concentrating plate reflects the sunlight and collects it on the heat collecting pipe, the medium flows into the water inlet pipe from the water inlet, is heated by the heat collecting pipe, collects in the water outlet pipe, and passes through the pump. The body is sucked into the conveying pipeline and transported to the place where the heat is needed; the reflective surface of the concentrating plate of the utility model is a continuous arc surface, no matter where the sun is, the sunlight is always reflected on the heat collecting tube, which greatly improves the solar heat collector. High heat collection efficiency, thus avoiding the disadvantages of the traditional parabolic reflector being affected by the position of the sun when daylighting. The heat absorbed by the heat collection device includes the heat obtained by the sun in the airtight space in the transparent cover, and also includes the heat directly absorbed by the heat collection device. The heat of sunlight and the heat obtained by the reflection of the continuous arc-shaped reflective surface of the concentrating plate; the overall structure of the utility model is a sealed structure, which is less affected by the external environment, and the environment in which the heat collecting device is located is relatively stable, and the loss of system heat Reduced to the greatest extent; the pump body can adjust the flow rate of the medium, so as to realize the control of the temperature of the system to meet the demand for heat in different situations.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of A-A shown in Fig. 1 .

Detailed ways

The concentrating solar heat collector shown in Figure 1 includes a thermal insulation base plate 1 and a light-transmitting cover body 2. The light-transmitting cover body 2 is sealed and installed on the thermal insulation base plate 1. In a confined space, the concentrating plate 3 whose reflective surface is a continuous arc surface is fixedly installed on the thermal insulation base plate 1 in the confined space. Device 4 comprises heat collecting pipe 6, water inlet pipe 5, water outlet pipe 8, heat collecting pipe 6 is installed in parallel in multiple groups, heat collecting pipe 6 is located on the focal line of the arc reflective surface corresponding to concentrating plate 3, and the two ends of heat collecting pipe 6 are respectively connected with The water inlet pipe 5 communicates with the water outlet pipe 8, and the water inlet pipe 5 is provided with a water inlet 7, and one end of the water outlet pipe 8 stretches out of the light-transmitting cover body and is connected with the delivery pipe 10 through the pump body 9. The water flows into the heat collecting pipe 6 from the water inlet 7 through the water inlet pipe 5 to be heated. After heating, the water is collected in the water outlet pipe 8, sucked into the delivery pipe 10 through the pump body 9, and delivered to the place where the heat is needed.

The concentrating solar heat collector of the utility model can not only be used to heat water, but also can be used to heat flow media such as air.

Claims (4)

1. Concentrating solar heat collector, including thermal insulation bottom plate and transparent cover body, the transparent cover body is sealed and installed on the thermal insulation bottom plate, and a closed space is formed between the light transmission cover body and the thermal insulation bottom plate, which is characterized in that: the closed space A concentrating plate with a continuous arc-shaped reflective surface is installed on the heat preservation bottom plate, and a heat collecting device is arranged above the concentrating plate. 2. The concentrating solar heat collector as claimed in claim 1, characterized in that: the heat collecting device comprises a heat collecting pipe, a water inlet pipe and a water outlet pipe, and the two ends of the heat collecting pipe communicate with the water inlet pipe and the water outlet pipe respectively, Multiple sets of heat collecting tubes are installed in parallel, the water inlet pipe is provided with a water inlet, and one end of the water outlet pipe extends out of the light-transmitting cover body and is connected with the pipeline installed with the pump body. 3. The concentrating solar heat collector according to claim 2, wherein the heat collecting tube of the heat collecting device is located on the focal line corresponding to the curved reflective surface of the concentrating plate. 4. The concentrating solar heat collector according to claim 3, characterized in that: the outer layers of the heat collecting pipes, water inlet pipes and water outlet pipes are coated with a heat-absorbing film layer.

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