OA11253A - Expansion motor - Google Patents

Description

011253

The present invention relates to a heat engine the operation is ensured by the dilatation forces of a liquid.

The thermal engines currently in use operate thanks to the de-tent of gaa or haze temperature vapors. This property allows these devices to operate only with high-calorific heat sources, guaranteeing a great difference in temperature. However, these heat sources have the disadvantage of being both expensive and polluting.

The principle according to the invention consists of a device that operates at the slightest difference in temperature. It offers the advantage of working with free sources of energy such as the sun, geothermal energy, the difference in temperature between surface seawater and deep seawater ...

The device according to the invention comprises a sealed metal enclosure or emitting enclosure within which a liquid can be heated that can be heated by means of the sun or by means of other sources of heat teüesque indicated above. The enclosure is designed to receive a mobilerendu piston very sensitive in its design and receiving the liquid that expands under heating.

The piston moves under the effect of the expansion of the liquid and creates a dynamic movement that can be exploited. The piston, according to the invention, receives the pressure of the liquid on its elongated body (instead of on or sesextrémités).

This feature gives it the advantage of being robust and being sen-sible to the dilatation effect of the liquid. Both ends of the piston are out of the motor enclosure and its middle part is larger than the rest of the body.

The sensitivity of the piston therefore depends on this diameter; the larger the diameter difference, the less sensitive the piston. The driving enclosure and the piston may be designed so that the latter moves in both directions of its length. The figure. 1 shows in section a piston (1) housed in its emitter chamber (2). The enclosure has two compartments (3) and each of the compartments receives the piston with its two different diameters. The piston then moves in both directions of its length according to the compartment which receives the dilating liquid. When one of the compartments receives the dilating fluid, the other expels. The large diameter piston body allows the existence of areas (4) on which the liquid exerts its effective action. Figure 2 shows a variant of the device.

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During its operation, the liquid (9) contained in the emitter enclosure (10) expands under the effect of the heat trapped by the greenhouse (II). The excess of the liquid thus obtained arrives at the driving enclosure (2) by channels (7) · Obers (5) integral with a shaft (6) actuated by the piston alternately adjusts the arrival of the fluid in each of the comparisons (3) of the driving enclosure. . The liquid being incompressible, the pressure exerted on the areas (4) of the piston sets it in motion.

Each compartment of the driving enclosure has an inlet (7) and an outlet. (6) liquid.

When the entrance to a compartment is open, the corresponding output is closed. The liquid enters by moving the engine piston. The entry of the liquid tends to increase the volume of the compartment, but the tightness of the enclosure does not allow it, the movement of the piston then releases the space that the dilation of the fluid makes it essential.

The fluid scrtiedu of the opposite compartment is opened in the meantime and the large diameter of the piston enters by expelling the excess fluid usedau displacement piston in the previous direction.

According to the variant indicated in Figure 2, the piston head (19) which approximates the chamber exerts a pressure on the control shaft (6) by means of spring (17) that it compresses. But the commandene tree moves only when the priston is at the end of the race; it is immobilized by a stop (16). The latter moves in translation on pressure of a tip (14) to the piston head. î

The tip (14) exerts a thrust on an oblique metal plate (15) integral with the spring (12). This is compressed by removing the stop (16) until the control shaft (6) is free and instantly adjusts the entry and exit of the compartments.

In the reverse movement of the piston, the same process is repeated and regulates the supply of the compartments.

To ensure the proper functioning of the control shaft (6), pis-ton (13) supported powerful outgoing (18) and opening in eachcomcomtiments give the liquid a certain compressibélité. Thus, the energy accumulated by each of the springs (17) of the control shaft is sufficient to regulate the power supply of the enclosure auxotricèse.

The fluid used to work the piston passes through the channels (8) and is stored in a cylinder provided with a piston (20) supported by a spring (21). 011250 - 3 -

When the liquid of. the emitter enclosure is cooled, a valve (22) deviates and the piston (2o) ensures the filling of fluid in the enclosure.

The engine work of the system is collected on a shaft (23) solideaueau piston and moving with him in translation movement. In an alternative embodiment, a device for cooling the emitter enclosure may be incorporated in the device. This system operates at a fixed temperature of the engine liquid and regulated by a thermosta.

Any liquid can serve as a material to dilate, taking into account certain properties such as expansion coefficients and heat mass; because the best performances are obtained with liquids with low heat mass and with high: coefficients of expansion.

The channels which conduct the driving liquid from the emitting chamber to the driving chamber can be thermally insulated if the entire volume of liquid has to heat up. In addition, the shaft (23) can also be coupled to a connecting rod and crank system to obtain a rotating shaft. The invention can find applications in village hydraulics; the work of the engine that can operate a hydraulic pump. The invention can serve to produce mechanical energy and beyond, electrical energy by operating electric generators; that everywhere there is a difference of temperature, however weak it may be.

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Claims (6)

01 1 2 5 ό Claims 1) Device for converting thermal energy into mechanical energy by dilating a liquid that is heated. 2) Device according to claim 1 characterized by an enclosure (2) étanchedite driving enclosure containing a liquid and within which is housed a movable piston (1) moving under the effect of the expansion of this liqui-de . 3) Device according to any one of the preceding claims, carac-terized ··. in that the piston has two different diameters and its two ends are outside the driving enclosure. It has areas (4) on which the dilating liquid acts. 4) Device according to the réendiaation 2 characterized in that I'intintemotrice P®ut be designed with two compartments (Figure 1) to allowtreau piston to move in both directions of its languor. 5) Device according to any one of the preceding claims characterized in that the driving liquid which acts on the pistcn (1) enters alternately into the two compartments of the enclosure by means of shutters (5) controlled by the device itself. 6) Device according to any one of the preceding claims charac-terized in that pistons (13) supported springs (18) give the motor 20 a certain compressibility. Copy