US9683538B2 – Fluid Energy Generator – Google Patents

Prevención COVID-19 en el Colegio - Colegio Lirima These intermediate attachment points 17 a, 17 b connected to the attachment system 5 by the limiting means 18 a, 18 b allow the number of curves of the membrane between its first and second areas 6, 8 to be increased, thereby increasing by the same amount the number of areas of alternation of pressure along the membrane. 12 also includes means for limiting the separation of the first and second areas of the two membranes 4 a, 4 b. The membrane includes a plurality of intermediate points 17 a, 17 b of connection to the springs.

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Portrait of beautiful caucasian smiling brunette woman model in bright pink overcoat and summer stylish blue skirt Each of the connections between a junction point of a series of springs and a corresponding intermediate point 17 a, 17 b of the membrane is a connection allowing freedom of rotation of the intermediate point of the membrane relative to the junction point about an axis passing through this intermediate point and perpendicular to the longitudinal sectional plane P of the membrane.

Dolores Musculares Piernas

16 and 17, the device 1 may also include transverse reinforcers 24 extending along a face 4 e of this membrane and perpendicularly to a longitudinal sectional plane P of the membrane passing through the first and second areas 6, 8. These transverse reinforcers 24 are adapted to increase the resistance of the membrane to bending about a longitudinal bending axis A-A passing through the first and second areas 6, 8 of the membrane. Ix” is determined, which makes ωn tend toward the ideal natural frequency ω, with the stiffness of the membrane compensating for the inertial forces due to its weight.

It can be seen in the embodiment of FIG.

Dolor neuropatico 1 Finally, it should be noted that this stiffener R may be provided by using a link 5 a of the support 3 in the first area 6 which is resilient in transverse bending with respect to the flow. A first flexible membrane 4 a is attached to the first assembly 30 in a first area of the membrane, according to at least one of the modes of membrane attachment described above. 24, in which the curves C1 and C2 illustrate the variation of amplitude Amp of the membrane between two of its points whose separation is limited. It can be seen in the embodiment of FIG. Conversely, in the embodiment of FIG. The following description gives details of different embodiments of the device according to the invention 1 (FIGS. As can be seen in all of FIGS. For example, the shape of the undulation of the membrane in the fluid flow can be regulated by adding intermediate attachment points between the first and second areas 6, 8. Typically, by increasing the number of attachments 17 a, 17 b along the length of the membrane, the membrane wave is made to have a shorter period/length.

Each fixing at 17 a, 17 b is such that the membrane remains free to pivot about a transverse pivot axis of the membrane (in other words, with a pivoting movement perpendicular to the longitudinal sectional plane P of the membrane). Dolor de espalda lado izquierdo y brazo . Since each of these membranes undulates with the fluid flow (because its length L is greater than the minimum distance D) while having a wave which is out of phase with the wave of the other membrane, it is found that the downstream bar 13 b oscillates in rotation about the axis B-B with respect to the upstream bar 13 a. Ix) have been determined, it is possible to define the minimum longitudinal bending stiffness K which the membrane must have in order to undulate at the desired velocity and in the desired vibration mode, in the chosen flow. When it is subjected to a flow, this deflector 20 tends to exert a torque on the tail of the membrane which returns this end of the membrane toward a position in which it would extend parallel to the axis of the flow X-X.

Dolores Musculares Covid19

1, by controlling the resistive force it is possible, for example, to cause the captured energy to vary as a function of the velocity of movement of the second membrane area along an axis Z-Z perpendicular to the fluid flow axis X-X, this perpendicular axis Z-Z extending in the longitudinal sectional plane P of the membrane 4. If this velocity becomes too low with respect to a predetermined low velocity, the value of the resistive force is reduced so that the membrane can start to undulate again at a predetermined velocity. These transverse ridges 21 are thus oriented perpendicularly to the flow of fluid X-X from the first area 6 toward the second area 8. These ridges 21 create local resistance to the flow along the membrane and enable an increased amount of energy to be captured, compared with a situation in which the membrane had perfectly smooth faces 4 e.

This upstream link bar 13 a is connected permanently to the membrane in the first membrane area which, in the present case, is located along the upstream edge 4 c of the membrane. 6-16, the force transmission means 12 may include a downstream link bar 13 b connected permanently to the membrane at the position of the second membrane area 8 which, in the present case, extends along the downstream edge 4 d of the membrane. In this embodiment, the transmission of forces captured in the second area takes place via a means on board the membrane, the converter also being on board the membrane, as in the case of the embodiments of FIGS. The first membrane area 6 extends across the whole width Larg of the membrane along an upstream transverse edge 4 c of the membrane, perpendicularly to a longitudinal sectional plane P of the membrane. These resilient stiffeners Rare connected to the first membrane area 6 and to the support 3 so as to force the first area 6 to return to its central position.