AUTOMATIC SOLAR HEATING SYSTEM FOR GREENHOUSES

摘要

The present invention relates to an automatic solar heating system for greenhouses. The present invention provides an automatic solar heating system for greenhouses which heats water in a hot water tank using solar heat collected on the ceiling of a plastic green house, transfers the heated water to a heat exchange tank for absorbing the heat using a heat pump, and automatically transfers and circulates the heat to a heat radiation unit inside the greenhouse for increasing the temperature inside the greenhouse at night in fall to spring. More specifically, the automatic solar heating system comprises the following: a water supplying unit including multiple spraying nozzles spraying water supplied from the outside to the upper portion between layers of a dual plastic greenhouse, and a water supplying pipe; a collecting water pan collecting water sprayed from the spraying nozzles, in which the solar heat is absorbed on the surface of an inner plastic greenhouse and the space between the layers of the dual plastic greenhouse; the hot water tank storing the collected water by being connected to the collecting water pan; a heat exchange unit receiving the water from the hot water tank for heat exchanging, and emitting the heat from the inside of the plastic greenhouse; a water storage tank for storing the water used for the heat exchange by being connected to the heat exchange tank; a first pump for supplying the water in the water storage tank into the water supplying pipe by an external signal; and a control unit for controlling the operation of the first pump and the heat exchanging unit. A user does not need to go to the plastic greenhouse in cold winter nights by automatically and stably heating the inside of the plastic greenhouse for preventing the cold-weather damage of agricultural products. The growth of the agricultural products is improved to increase the harvest amount and quality of the agricultural products.