Automation of any agricultural work greatly simplifies the life of gardeners and gardeners. This applies mainly to the use of various technical devices - such as, for example, a thermal drive for greenhouses. Let's find out what this miracle of technology is and how it works.
What is the thermal drive for ventilation of greenhouses?
In order for vegetables to grow well and be fruitful in hothouse conditions, they need not only fertile land, regular watering and warmth. Plants need fresh air, which provides them with an influx of carbon dioxide. And for this it is necessary to open the windows, when the temperature inside the room rises, and close them when it becomes lower than permissible. As you understand, doing this manually is very time-consuming, because for this you need constant monitoring of temperature conditions. And then the device for automatic ventilation of the greenhouse called the thermal drive comes to the rescue.
The principle of its operation is based on the use of a working fluid (oil), which has the useful property of expanding when heated. When this happens, the actuator operates according to the piston principle, pushing the rod out of the hydraulic cylinder, which opens the window or the window frame. Thus, you do not need a manual airing, which is very convenient. And due to the simplicity of the mechanism, it is not necessary to install additional temperature sensors or devices operating in electricity in the greenhouse.
How to make a thermal drive for greenhouses with their own hands?
This technical device can be purchased at an affordable price. Thermal drives for factory-made greenhouses are widely used due to their simplicity and efficiency. But many craftsmen prefer this purchase of making a drive with their own hands.
The most common are the following several ways how to make such a device:
- Automation for greenhouses - thermal drive from a computer chair.
- Thermal drive for a greenhouse, made of a car hydraulic cylinder.
- Use of a gas shock absorber from the car "Zhiguli".
- Homemade electric drive.
It is very important to take into account the speed of heating the working fluid when designing the device yourself, because it depends on how fast the ventilator opens and the ventilation begins. If the oil is heated too slowly, it is fraught with the death of tender seedlings from overheating.