The invention refers to an vacuuming equipment with many possibilities for application because of the high depressurization values that it generates.

The invention can be used in the field of preservation for a long period, in special containers of specific food products, such as fruits, cereals, seeds and even non-food products which require protection against contact with oxygen, or with bacteria or viruses.

Another possible use of the vacuuming equipment is the production of mechanicalelectrical energy.

It is known that vacuuming can be produced in a very specific space and one of the most benefits of this process is the protection of the goods in this vacuum space against external undesired agents.

The vacuuming already known solutions have a very limited application field and at very low depressurization values, namely -1 ...-3 bar which represents their major disadvantage.

The technical problem this invention intends to solve is the realization of a vacuuming equipment able to be used in several fields due to the fact that allows depressurizations at high values, namely -5... -10 bar depending on the necessities and which can also be used to generate mechanical-electrical energy.

The vacuuming equipment, according to the invention, solves the technical problem by the fact that realizes the depressurization right from the inside of the space dedicated to depressurization. A cylinder with a piston is mounted inside the space wanted to be depressurized and this cylinder is provided with valves and it is driven by an electrical engine situated inside the said space which, in his turn, is provided with an external energy source.

The vacuuming equipment, according to the invention, presents the following advantages:

Ensures the preservation of a very large range of food and non-food products;

The preservation resulted from the depressurization is maintained for a longer period of time;

The depressurization can be used to generate mechanical energy which can be transformed in electrical energy for a long time.

Further on, there are presented two practical examples of the vacuuming equipment related to the figures:

- F‘ .1 - vacuuming equipment for depressurization; - Fig-2 - vacuuming equipment for producing mechanical-electrical energy.

In a first practical example, (Fig.l), the vacuuming equipment is used for depressurizing an enclosure and it consists of a spherical container provided inside with an electrical engine ME driven from outside, a driven mechanism MA that runs a piston 4 which works in a cylinder 3 provided with two discharge sense valves 1 and 2, the equipment being also provided with a depressurization pipe CD provided with a tap.

The piston 4 is driven by the electrical engine ME driven from outside through the driven mechanism MA.

The action of the driven mechanism MA on the piston 4 transmits to it a translation movement known as ’’come-and-go” which depressurizes the said enclosure depending the necessity and the power of the electrical engine ME, the air being evacuated from the equipment through the depressurization pipe CD provided with a tap.

The vacuuming can also be realized with an electrical compressor with pistons set inside the depressurization container and driven from outside which eliminates the initial atmospheric pressure from the spherical container transforming it in vacuum namely eliminating it from inside towards the outside of the container.

In a second practical example, (Fig.2), the vacuuming equipment is designed to produce mechanical-electrical energy and it consists of a cylinder A at its bottom and a spherical calotte B at its top these two parts being separated by a separating wall C forming a common solid AB.

The solid AB is provided with two pipes 5 and 6 with taps, peephole 7 made of glass for checking the level, a connecting pipe 8 which starts from the separating wall C and goes to the base of the cylinder A and being provided with a tap and a sense damper 9.

The solid AB also consists of a pipe 10 provided with taps that goes from the base of the cylinder A, through the turbine 11 and makes the connection with the upper part of the spherical calotte B.

The solid AB is also provided with an evacuation vacuum pipe 12 provided with a tap, an electrical generator GE connected to the turbine 11 and a vacuum-meter 13.

All the pipes are provided with opening/closing taps bolt T.

Inside the enclosure, there could be installed an equipment with hydraulic transmission also driven by an electrical engine from inside in order to generate very low depressurizations.

The enclosures used for depressurization are spherical because they present maximum resistance to the inside depressurization.

The vacuuming equipment functions as follows: The cylinder A is filled with a liquid such a water, oil, emulsion or antifreeze using the tap on the pipe 5 with the tap on the bottom pipe 10 being closed. The level of the liquid is checked through the peephole 7 made of glass.

The taps on the pipe 5 are closed and taps on the pipe 10, vacuum pipe 12 and the pipe 8 are opened.

A quantity of air under pressure is driven through the pipe 6 so that it pushes the liquid from the cylinder A through the pipe 10 and the turbine 11, the taps being opened. The sense damper 9 of the pipe 8 is closed so that the level of the liquid in the cylinder A reaches to half of the height checked through the peephole 7 and the level of the liquid in the spherical calotte B must not exceed the level to which the pipe 10 is connected. In this situation, an air pillow p is formed at the top of the cylinder A equal in size with the dislocated air mass.

The spherical calotte B is than vacuumed through the pipe 12.

Because of the vacuuming process, the liquid in pipe 10 being minimum compressed, this liquid is absorbed and operates on the sense damper 9. In this way, the liquid is absorbed in the pipe 8 from the spherical calotte B generating a closed circuit which operates the turbine 11 and the electrical generator GE.

The vacuuming process of -3... -5... -10 bar transforms the force of the turbine 11 in pressure.

Once the necessary vacuum in the spherical calotte B is settled, it can be checked with the vacuum-meter 13, the tap on the pipe 12 is closed, the pipes 8, 10 and the turbine 11 form a circuit in the spherical calotte B that works continuously.

A manometer 14 can be mounted on the pipe 10 before the turbine 11 in order to control the pressure on the turbine 11.