The invention provides a thermoelectric integrated solar drying oven, which comprises a drying box, a ventilation device and a solar photovoltaic power supply system; The top and the back of the drying box is connected with an arch, the drying box is provided with an air inlet and an air outlet, the air inlet is arranged on the lower side of the drying box, the air outlet is arranged on the upper side of the drying box, the ventilation device is installed at the air outlet, air in the drying box body to form a rotating flow field; The solar photovoltaic power supply system is electrically connected with the ventilation device. The solar photovoltaic power supply system supplies power to the exhaust fan, and the temperature inside the box also rises under the solar radiation. The hot air formed in the drying box forms a swirling airflow to heat and dry the material. The fresh air from the outside enters the drying box through the filter screen of the air inlet, and the hot and humid air generated inside the drying box is discharged in time by the exhaust fan. The drying efficiency and energy efficiency of materials are improved. It is very suitable for remote and underdeveloped areas.

Technical field

The invention belongs to the field of solar energy utilization, in particular refers to a thermoelectric integrated solar energy drying oven which uses solar energy to provide drying heat energy and fan electric energy to dry materials.

Background technique

With the progress of science and technology and the improvement of environmental protection requirements, a variety of new environmental energy, mainly solar energy, has attracted more and more attention. Solar energy is a green and clean energy. Its thermoelectric conversion technology has been widely used in industry, agriculture and other fields, which can effectively reduce energy consumption and pollutant emission. Using solar energy to dry materials refers to the heat generated by the solar energy to make the water in the material vaporized and diffused into the air to get dehydrated dry materials. Solar drying has a wide range of applications in the agricultural field, such as the use of solar exposure and natural air drying to reduce the moisture of agricultural products to achieve long-term preservation of agricultural products, but this natural drying method is time-consuming and has low efficiency. Electric heating, coal burning hot air and other artificial drying methods, with high energy consumption and heavy pollution, can consume a lot of energy, and the drying process is not easy to control; the effect is not ideal. Most of the existing solar drying equipment is to collect solar radiation energy by solar heat collecting device, and to increase the temperature in the drying room by heat exchanger and other equipment, so as to remove the moisture in the material. However, due to the existence of equipment and medium such as heat exchanger, its thermal efficiency is low, and increase the complexity of the drying device. In addition, the external fan for forced heat transfer in the drying device needs to consume external electric energy, which further increases the operation cost of the device, and it is difficult to apply in remote areas such as mountains and islands where there is a lack of power supply conditions.

Content of invention

The purpose of the invention is to provide a thermoelectric integrated solar drying oven to solve the above problems. Solar energy is used to provide heat energy required for drying and electric energy required for ventilation for the drying device, and the external energy consumption is zero. The device is easy to install and operate, flexible and low cost, which can improve the drying efficiency of materials and energy efficiency. It is very suitable for remote and underdeveloped areas.

The technical scheme of the invention is: a thermoelectric integrated solar drying oven, which is characterized in that it comprises a drying box, a ventilation device and a solar photovoltaic power supply system.

Compared with the prior technology, the beneficial effects of the invention are:

1. Under the sun, when the energy generated by the solar panel reaches a certain value, the exhaust fan starts to run, and the temperature in the box also rises under the solar radiation. The hot air formed in the drying box body forms a swirling airflow to heat and dry the material, and the fresh air from the outside enters the drying box through the filter screen of the air inlet. The hot and humid air generated inside the drying box is discharged in time by the exhaust fan.

2. The invention adopts a PC transparent plate with UV coating as a drying box, which increases the transmittivity of solar radiation, and the light is difficult to escape from the drying box after reflection and refraction in the box, so as to achieve the purpose of improving the utilization rate of solar energy and further improve the drying efficiency of materials.

3. The invention adopts the solar panel as the exhaust fan function, without external energy consumption, and realizes the solar thermoelectric integration function. The whole drying device can be considered as zero energy consumption and green environmental protection.

4. The whole device is completely closed, the air inlet is arranged with a filter screen, and the quality of the dry material is safe and pollution-free.

5. The invention adopts stainless steel frame structure and has fewer parts, and simple installation and convenient operation can be achieved.