If you have a greenhouse on your summer cottage, then much will depend on proper ventilation. Ventilation creates the most comfortable conditions for life for plants, regulates humidity and air temperature. If the air does not circulate in the greenhouse, the temperature will constantly rise or fall. In such conditions, no culture can grow and bear fruit. In this article we will tell about automatic ventilation of the greenhouse and how to make a thermal actuator with your own hands.
Advantages of using automatic airing
Many summer residents on their own experience were convinced of the advantage of automatic ventilation of the greenhouse. The technology works quite simple. The device is attached to the window or transom, which opens them as needed. Thanks to this system, you can greatly facilitate the work.
In the hot season, the automatic machine for greenhouses will drive out unnecessary heat, and in the winter, on the contrary, will close the transom, keeping it. This will simplify your work, since you will have to constantly monitor the temperature regime in the greenhouse. The advantage of using automatic ventilation is that too much cold or warm air will not get into the greenhouse, the system will regulate the temperature, close or open the vents. As a result, the plants will be grown in comfortable conditions and bring the expected yields.
What tool you need to work
The automatic machines for greenhouses are universal and suitable for airing all types of premises. The ventilator will not need to be activated; it will work automatically due to the expansion of the liquid as the temperature in the greenhouse rises. The maximum height at which the window will open is 45 cm. Withstands a load of 7 kg. The equipment is designed for one vent. Temperature range from +15 to + 25ºC. Automatic ventilators have an aesthetic appearance, compact dimensions, they are easy to operate.
How to make automatic ventilation of greenhouses with their own hands
To create a comfortable microclimate in the greenhouse, you can use the thermostat, made by hand. Such a device will provide full ventilation in the greenhouse. Next, we will explain how to make a thermal drive for greenhouses from scrap materials with your own hands.
Thermal drive do it yourself from the office (computer) chair
The office computer chair has a gas lift or lift cylinder that allows you to adjust the ride height automatically. To use such a detail to create a vending machine would be a good idea for a greenhouse.. First you need to pull out the plastic rod, it is necessary in order to gain access to the metal pin of the valve. After clamping a rod with a diameter of 8 mm in a vice, insert a cylinder into it, so you will get rid of pressure. Next, take the grinder and cut the cylinder together with the tapered part, then squeeze the steel rod. Take care not to damage the sanded surface and the rubber cuff.
To cut the thread M8, use a couple of layers of tarpaulin and clamp the rod in a vice. After this cuff can be cut grinder. The inner sleeve must be put in its place, and be sure to save the aluminum piston. All other parts will not be useful to you, you can throw them away. The rubber rings that are located on the piston mechanism should be removed and all parts should be washed with gasoline, since metal chips can remain on them.
Next, insert the rod into the inner sleeve and very carefully, without damaging the oil seal, remove its end from the cylinder. On the thread you need to screw the nut size M8, so that during operation the rod does not fall into the cylinder. After that, insert the aluminum piston into the socket from the valve, and a piece of pipe whose thread is on one side must be hermetically welded to the side of the cylinder that was previously cut.
Screw the M8 elongated nut onto the stem threads, and then screw the plug in to join the control window of the vent. After you need to remove the air that is in the system, and fill it with engine oil. To do this, you can take a liter plastic bottle: at one end make a plug, and at the other place a ball valve. Automatic machine for automatic ventilation of the greenhouse, made by hand, ready to work.
How to make a thermal drive from the automotive shock absorber
Quite often, automatic ventilation of the greenhouse can be collected from virtually nothing. The principle of such a device is a substance that reacts to heating and cooling by expansion and, accordingly, by contraction. In our case, automotive oil acts as a substance. In order to make a thermo drive from a car shock absorber with your own hands, we will need:
- automotive gas spring or automotive shock absorber piston;
- two cranes;
- metal pipe for oil.
First, at the vent, which will open and close for ventilation, you need to attach a shock absorber rod. In order to prepare the pipe for engine oil, on the one hand, you should attach a valve to it to fill in the oil, and on the other hand the same valve, but it will serve to adjust the pressure and drain the oil. The bottom of the gas spring should be carefully cut and hermetically connected to the oil pipe. Thermal drive from the automotive shock absorber is ready.Did you know? When the greenhouse is very hot, the engine oil that you pour into the pipe will expand. Due to this, the rod rises, and he in turn raises the window frame. After the temperature in the greenhouse decreases, the oil will shrink and the vent window will close accordingly.
Thus, using a conventional shock absorber, it turns out a good, self-made ventilation system for the greenhouse.
Thermal drive from the hydraulic cylinder of the car with your own hands
Since the hydraulic cylinder of the car works with the help of a special compressed gas, in order to make a thermal actuator for the greenhouse with your own hands, This item needs to be improved. First you need to drill a hole in the hydraulic cylinder and release the gas. In the same place cut a carving 10 * 1,25. It serves to connect the hose.
Did you know? The brake pipe from the “Niva” is good for this, it is easy to find and it is inexpensive.
Using a stud and M6 bolt, connect it to the old place on the head. Now prepare the receiver. You can order it from a turner or do it yourself if you have special equipment and skills. After the air is displaced, fill the system with oil and check for tightness. The ventilation system of greenhouses from the hydraulic cylinder of the car is ready to work with your hands. When you make a thermal actuator, make sure that everything is neat, because the quality of the equipment will depend on your accuracy.
How to make automatic ventilation using plastic bottles
If you have a small greenhouse, then automatic ventilation using plastic bottles will suit you, especially since it is very easy to make. For work you will need:
- black film;
- wooden plank;
- two plastic bottles, one capacity should be 5 liters, the second - 1 liter;
- thin meter PVC tube and two pipes.
Important! The plastic bottle must be sealed, otherwise the device will not work.
That's all, the thermal drive for the automatic greenhouse is ready. To increase the effect of a five-liter bottle wrap black film and hang from the ceiling of your greenhouse, where the warm air rises. A liter attach next to the window. Then, nail one end of the wooden board to the transom, and fix the other over the liter bottle so that under the weight of the board it is wrinkled. When a large bottle is heated, the pressure in it increases, the air expands and the liter is transferred. She cracks down, while raising the platform, and she, in turn, pushes the frame out. The higher the temperature in the greenhouse, the higher the pressure in the bottle.
Thermal drive from cylinders and rubber ball
The ventilator for the greenhouse of cylinders and a rubber ball is a rather original device, and it is very simple to make it with your own hands. You will need the following:
- 2 bottles;
- board;
- wooden box with lid;
- inflatable ball;
- hose.
Important! The ball must be deflated.
Put it in a box so that when it inflates, it pushes the lid out. To the lid of the box, nail the board, which then connect with the window. Place the cylinders under the greenhouse ceiling, and the box with the ball - under the transom. When the cylinders heat up, the ball will inflate and open the vent. In such equipment, everything must be hermetically sealed, the work of a thermal actuator made by hand will depend on it.
