Nutrition solution physical constant temperature energy saving system

Abstract

The embodiment of the invention provides a nutrition solution physical constant temperature energy saving system. The nutrition solution physical constant temperature energy saving system comprising asemiconductor board and a power controller module is characterized in that the semiconductor board is connected with the power controller module; the semiconductor board is in contact with a box bodyof a thermostat; the power controller module is used for inputting currents to the semiconductor board and controlling the flow of the currents in the semiconductor board according to the demand of temperature adjustment; the semiconductor board is used for absorbing or releasing heat according to the input currents from different flow directions so as to adjust the temperature of the nutrient solution in the box body. The nutrition solution physical constant temperature energy saving system has the advantages of being capable of adjusting the temperature of the nutrient solution by the heatabsorption or heat release of the semiconductor board and accurately controlling the heat absorption or heat release by using the Peltier effect so as to accurately control the temperature of the nutrient solution, and being energy-saving compared to the prior art and improving economic efficiency with the nutrient solution not affected due to the fact that current and voltage required for the semiconductor board to work are small.

Description

technical field [0001] Embodiments of the present invention relate to the field of automatic control, and more specifically, to a physical constant temperature energy-saving system for nutrient solution. Background technique [0002] As the leading industry with the most characteristics and advantages in agriculture at the present stage, facility agriculture occupies an important position in economic development. Soilless cultivation has been popularized on a large scale because of its strong controllability, cleanliness and pollution-free, water-saving and fertilizer-saving, and the supporting theoretical research is gradually improving. The key to soilless cultivation is the supply of nutrient solution, among which the formula, concentration and temperature of the nutrient solution are the key factors affecting crop yield and variety. However, for the adjustment of the liquid temperature, the prior art still has certain limitations. As far as heating is concerned, the co...

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Problems solved by technology

In terms of temperature rise, the conventional method of using electric heating rods to produce a temperature rise effect has poor temperature control accuracy; in terms of temperature drop, the method of using chemical methods to produce a refrigeration effect requires a large amount of reactants to maintain a continuous supply, and the economic benefit is low. Poor environmental protection; using solid ice to cool down, it is difficult to achieve continuous refrigeration, precise control is difficult, and the concentration of nutrient solution will be diluted

Therefore, the above methods are not suitable for constant temperature treatment of nutrient solution during crop growth.

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