Group of inventions is referred to wind-power engineering and can be used in the course of the power plants development, which convert a power of the wind's flow into electric energy.

It is known as a device for production of electric energy, which consists of a pipe with one or more blade-type turbines, installed within it. Cylindrical or conic pipe is horizontally installed on a transportation facility and turbines are placed in the front or rear end of the pipe (patent of Russia RU 79152 Ul).

It is known a wind power plant, in which a casing at the outlet is executed in the form of a diffuser, aerodynamically profiled and a turbine in the form of a blade with aerodynamic profile is installed inside the casing, in its front part (patent of Russia RU 2327056 C2).

It is also known a wind-driven electric plant, composed of an inlet confuser, a neck with a blade-type turbine, which is placed inside it and an outlet paraboloid diffuser (patent of Ukraine UA 13984 CI).

Wind-electric generator, known by patent of Russia RU 2327056 C2 represents one more analogue of the first version, concerning the proposed device. It contains a blade-type turbine, installed inside a casing, which is rotary with relation to a horizontal axis; formed of a supporting cylindrical ring, from the front there is a confuser, adjoined to this ring and from behind - a diffuser.

In all the above-mentioned devices a turbine (-s) is (are) placed within the casing, what allows to use wind's energy with more efficiency comparing to open placing of the turbine. At the same time, efficiency of the wind's energy conversion in such devices remains insufficiently high.

From the point of view, related to technical essence and combination of signs, a wind-electric generator, fixed by patent of Russia RU 2167336 CI is considered as the nearest to the first version of the proposed device. It comprises electric generator as such and a casing, which is installed with the possibility to rotate in horizontal plane, with a blade-type turbine placed inside alignmently to electric generator. The casing is provided with an inlet confuser and a conelike outlet diffuser in the form of a frame, made of lengthywise and transverse elements, covered with flexible fabric.

Increase of the wind load area's value in such design makes possible to obtain further reduction of pressure after the turbine and, in such a way, augmentation of the wind's flow speed, acting on the turbine. But the above-mentioned increase of the area's value is limited, so far as during strong gusts of the wind the analysed construction may be destroyed. In other words, in the device-prototype augmentation of the wind's flow speed, which acts on the turbine actually cannot be reached since this design's means provide neither device's safety in the event of cutting gusts of the wind, nor comfort of work in the regime when an outlet diffuser is being used.

Analogue of the second version of the above-mentioned device for obtaining of electric energy, fixed by patent of Russia RU 79152 Ul. It comprises a pipe with one or more turbines of blade-type, which is (are) installed inside this pipe. Turbine (-s) is (are) placed within the front and/or rear end of the pipe. Interior turbine's arrangement allows to use wind's energy with more efficiency, comparing to an open type of the turbine's arrangement.

It is also known a wind power plant, in which casing is executed in the form of the aerodynamically profiled diffuser and a turbine, which has a shape of a blade with aerodynamic profile, is installed inside the casing, in its front part (patent of Russia RU 2327056 C2).

The nearest one, from the point of view of technical essence and combination of signs, to the second version of the proposed device, is the above-mentioned wind-electric generator, fixed by patent of Russia RU 2167336 CI. It comprises a blade-type turbine installed within the casing, which is rotary relatively to horizontal axis; composed of the supporting cylindrical ring, from the front there is a confuser, adjoined to this ring and from behind - a diffuser. Disadvantage of both the prototype and the above-mentioned devices, fixed by patents of Russia RU 79152 and RU 2327056, consists in insufficient efficiency of the wind's energy conversion into electric power. Although turbines in these devices are installed inside the casing, design's solution of such turbines in the form of a blade is unfavourable for more complete conversion of the wind's power. Blade-type (propeller) turbines of the devices-analogues are also characteristic by a deceleration effect, which appears during acceleration of the turbine, produced after recurring decrease of the wind's speed.

Task of the group of inventions consists in creation of a wind-electric generator, which design, on account of inclusion of changes in separate units and elements, allows to increase efficiency of conversion of the wind's energy into electric power.

For this aim according to the first version of the proposed group of inventions, in a wind-electric generator, which contains support, casing, installed on the support with the possibility to rotate in horizontal plane, with electric generator and turbine, placed alignmently inside the casing, and conelike diffuser in the form of a frame, made of lengthywise and transverse elements, covered with flexible fabric, in accordance with this invention, elements of the diffuser's frame are connected to the casing on its hinges with the possibility to vary the conicity angle's value and the device is equipped with a drive for regulation of the conicity angle's value of the diffuser depending on the wind force, which acts on a wind unit.

Such regulation, when the wind is weak, allows to make act a maximum value of the diffuser's surface's area, and during increase of the wind's speed to reduce it correspondingly, and in such a way to assure an optimal load on generator. Moreover, and it is important, it makes possible to prevent driving of the turbine and generator up to dangerous values, what contributes to increasing of the degree of real reliability of the design. Besides, the above-mentioned drive device comprises servodrive and a kinematic pair of "nut-screw", which is installed on the diffuser's axis and with the same servodrive's and the diffuser's frame's the elements are connected in such manner, that, when a screw, upon action of the servodrive, is rotating in one direction, the conicity angle is increasing, and when the screw is rotating in the opposite direction, the diffuser's conicity angle in decreasing.

According to the second version of the proposed group of inventions in order to solve set task as for a wind-electric generator, which contains a casing, placed on the support, casing has a form of the cylinder or cone, with a turbine installed inside it, it has been proposed to execute this turbine in the form of a plate (disc), which is installed concentrically to the casing, and its exterior surface in order to provide with tubes for passage of the air through them. Axes of these tubes cross with axis of rotation of the turbine, and before the turbine at the leeward side, a fairing is placed, it is executed as a body of revolution, while the fairing's dimensions are selected for direct an inlet air into mentioned tubes of the turbine.

With this construction solution, turbines, at the outlet of the air from the tubes, on account of a harsh increase of a cross-section of casing after the turbine, in comprarison with the tubes' cross-section, a sphere of low pressure is being created, thanks to this phenomenon the air flow speed, which acts on the turbine, increases. Consequently, the value of the air pressure's force on the turbine increases and the turbine's rotation speed increases correspondingly. With it all, presence of the fairing guarantees penetration of the air into zone of the intel ends of mentioned tubes, and in such a way an efficient participation in operation of the whole air, which comes inside the casing, is provided. Besides, deceleration effect is either eliminated or decreased considerably, such effect is proper to propeller- type turbines (vide supra). In addition, presence of the tubes around the edges of the turbine, on account of increase of centrifugal distances also contributes to the increase of the turbine's rotation and, therefore to the increase of the efficiency of the wind's energy conversion into electric power. It is necessary to add that with such design of a turbine its production will be considerably simplified and vibration and sound effects will be reduced.

For further increase of the effect due to a harsh increase of cross-section of the casing after the turbine it is expedient to fabricate (execute) mentioned tubes for their axes represent broken line, formed of two or more sections, which are situated at an angle with relation to each other.

According to calculations of the author, in case of manufacture of the wind- electric generator, accordingly to proposed solutions, turbine's rotation speed can reach 5 thous. rev./min., what not only contributes to its efficiency, but also makes possible usage in the device of ordinary automobile high-speed generators and not those ones, which had been developed and manufactured especially for the wind- electric units, what will considerably reduce its cost.

Essence of the proposed group of inventions is explained by diagrammatic drawings, where on fig.l the unit is shown as a whole; fig.2 - components of a diffuser and device for regulation of the conicity angle's value of the device; fig.3 - view A from fig.2; fig.4 - longitudinal section of casing in the place of arrangement of the turbine; fig.5 - view by arrow B from fig.4; fig.6 and 7 - view C-C from fig.4.

The device contains cylindrical or conic hollow casing 1 horizontally installed, with electric generator 2 and turbine 3, placed inside it, connected by a shaft 4 (fig.l). The casing is installed on support 5 with the possibility to rotate of the latter in bearings (they are not shown) around vertical axis. At the outlet of the casing there is a conelike diffuser 6 in the form of a frame, made of transverse 7 and connecting 8 elements, covered with flexible fabric 9, for example, synthetic fabric of nylon type, etc. Elements 7, 8 are made of light metallic or composite materials in the form of profiles. Elements 7 are connected to the casing 1 and elements 8 by hinges (fig.2). Axially of the diffuser 6 in bearings 10 is placed a screw 11, which forms a pair with a nut 12 (fig. 2, 3). Bearings 10 are installed in a tubular casing 13, provided with grooves 14 for displacement of the nut 12. Other ends of elements 8 are connected to the nut 12 with hinges. Screw 11 is set for rotation from electric motor 15, which can make the screw to rotate in both directions. Control of the latter can be carried out either by hand or with the help of automatic equipment. Essence of this control consists in forced displacement of the nut 12 lengthywise the casing 13 to the left with decreasing of the conicity angle of the diffuser 6, when wind's speed is above of the set value and, therefore, avoiding too high rotation of the turbine. In the event of decrease of the wind's speed below the set value, the nut 12 should be displaced to the right with increase of the diffuser's conicity angle.

Turbine 3, situated inside the casing 1, is executed in the form of disk (plate) 16, around of its edges there are welded on metallic tubes 17, which axes 18 cross with lengthywise axis 19 of the casing (fig.4, 5, 6). In transverse section of the tube a round or an oval ring, or trapezium are lied.

Before the turbine 3, at the leeward side, a fairing 20 is installed, it is executed in the form of a part of cone's surface or paraboloid, or segment of a sphere or of their combination. Dimensions of the fairing had been chosen and determined in order to direct an inlet air into the inlet orifices of the tubes 17.

As it was earlier said, for further increase of the effect due to a harsh increase of a cross-section of casing after turbine the tubes may be composed of two or more sections 21, which axes are situated at an angle a with relation to each other (fig-V).