Solar heater

Description:

The invention relates to heliotechnics, in particular to solar heaters and can be used in agriculture for heating greenhouses.

It is known the solar heater for heating greenhouses that confines a flat reservoir with two pipes, mounted inside the greenhouse and connected in the refinery of the installation for heating the greenhouse that also confines a tank and a vessel for the expansion of the water, together with pipes through which the heat carrier circulates [ 1]. but the known solar heater does not use solar energy efficiently.

Also known is a solar heater, which encloses a thermally insulated box with a glass lid, in which a tank with pipes for water inlet and outlet is installed [2]. but this solar heater still does not allow to effectively control the air temperature in the greenhouse during the day and on nights.

The problem that solves the requested invention is to increase the efficiency of the solar heater.

The essence of the invention is that the solar heater encloses a flat box made of thermostable material with a window on the outside of the box, a tank with pipes installed in the box. The novelty of the invention is that in addition the solar heater confines two caps located on the inside of the box, mounted on hinges and joined together with opening-closing rods.

The result is the possibility to regulate the flow of heated air in the greenhouse.

The problem is solved due to the rational use of the heat collected by the solar heater: the day does not overheat the interior of the greenhouse and the heat is used for heating the greenhouse during the night. At night the lid of the box is removed, the box is opened, through it circulates the air that heats up from the flat tank, which becomes a heat radiator.

The invention is explained by fig. 1-3, which represents:

FIG. 1, the solar heater, front view;

FIG. 2, same, the box is closed, side view;

FIG. 3, same, the box is open, side view!

the heater confines a reservoir 1 with two pipes 2 and 3 mounted in a flat box 4 made of thermostable material and has on one side a window 5 made of transparent material, for example glass, and on the opposite side has caps 6 mounted on hinges. , joined together with rods of a device 7 for opening the box.

The solar heater installed in the greenhouse serves as an example.

The solar heater works as follows.

On sunny days, the sunbeams through the glass of the glass 5 enter the box 4, heat the flat tank 1, the hot water becomes easier, it rises up, it passes through the pipe 3 in the greenhouse heating system (not shown), it releases the heat in the water from the tank of this installation, passes through the pipe 2 into the flat tank 1, where it is heated again, so it flows according to the thermosyphonic principle. The heat carrier (water) from the solar heater passes into the tank (not shown), where the heat is heated and accumulated.

During the nights and on cold days without the sun, when the temperature drops in the greenhouse, the closing device 7 of the box 4 opens the covers 6 of this box, the air from the greenhouse circulates through the box 4, cools the flat reservoir 1 which becomes a heat radiator, cools and the water from it, which becomes heavier and is let down, flows through the refinery of the installation for heating the greenhouse according to the same thermosyphonic principle it transports the heat accumulated during the day from the water tank to the flat tank 1, where о releases and circulates the interior of the greenhouse. The speed of circulation of the water m the refinery of the installation is adjusted by modifying the position of the device 7 opening-closing the flat box 4.

In the morning of sunny days by means of the device 7, the lids 6 of the box 4 are closed, the flat box becomes thermally insulated again, the air temperature m the box rises much faster than the air temperature in the greenhouse, as the water in the tank heats up and more heat accumulates.