CS259352B1 - regenerator - Google Patents

Abstract

The purpose of the solution is the use of a heat regenerator for generating mechanical power by thermal expansion of the regenerative filling and the technological nature of its construction. The purpose is achieved by using a foil made of a thermally dilatable material characterized by a memory effect as a regenerative filling of the heat regenerator, while the construction of the regenerator allows for the technologically advantageous application of a method of production from an endless strip of foil. The regenerator can be used in the construction of linear motor elements of robots, especially for use without electrical power.

Description

BACKGROUND OF THE INVENTION The present invention relates to a regenerator for use in linear heat engines using a memory phenomenon, such as robotic handling elements, servo drives of a device using regenerators. Current known devices employing a memory effect of metallic materials, e.g. nickel alloys; with titanium to convert thermal energy to mechanical, they use electric or convection heating to generate mechanical dilatation, followed by air or water cooling and the removal of most of the residual heat as waste.

According to the present invention, there is provided a regenerator block formed from a film of a thermal expansion material which is folded or stacked at the points of the topped ridge formed by attaching strips to the film at spacing equal to the length of the regenerator block. In these locations, the stacked foil is tied by connecting elements and permanently biased to tensile tension by positioning the force at the point of attachment of the transducer to one of the edge clamping segments.

By employing the inventive regenerator structure for an engine or a handling element utilizing a monumental thermal expansion, a high constructional design is achieved with the present high-capacity regenerator, allowing for a periodic passage of fluid from the heater to the cooler and to sleep increased thermal efficiency of the device by reducing the temperature of the fluid in the cooler with by increasing the area of the regenerator performing the length changes, it decreases.

1 shows a detail of the regenerator foil at the point of switching, FIG. 2 shows a longitudinal section through one regenerator block, FIG. 3 is a front view, FIG. 4 shows the heat curve alongside the regenerator and the heater and radiator compartments.

The thermal expansion filler consists of one or more blocks according to FIGS. 1, 2, 3, wherein the clamp 1 is free to slide in the housing 3 and pulls the interlaced sheet 4 marked by a memory effect at the location of the strips (DET A - FIG. the connecting elements 2 (screws) through the foil 4. The clamp 5 grips the opposite side of the thermal expansion foil 4 and is firmly attached to the housing 3, or to the movable clamp of the serially connected further block.

The function of a regenerator with a thermal expansion filler, e.g., a nickel-titanium foil, is to absorb the heat qi supplied by the flowing fluid from the heater, e.g. After heating the fluid (4), it flows through the regenerator into the cooler, whereby the restorative filler is heated by the ATr. In the cooler, the fluid temperature is distributed from TCmax at the outlet of the regenerator to the Tem ™ at the outermost part of the radiator. In the cooler, the fluid is cooled by ATC, which is the smaller the value the regenerator has a higher filler area. Thus, the efficiency of converting heat to mechanical work will be

, ATC ΛΤ "ΔΤη is for the given material and the increase of its specific heat during heating by a constant. The efficiency depends on the specific area of the regenerative filler (if the film thickness h - »O => lim lim -> Tc" * 0 -> 7) 1) ·

The use of a regenerator with a thermal expansion filling characterized by a memorial phenomenon is particularly advantageous in the construction of linear handling elements of robots, especially for the solution of autonomous drives without power supply. At a controlled heating temperature (e.g., gas and cooling, a precise linear movement can be achieved from the dilatation of the regenerative fill depending on the low power displacement of the displacement piston, controlled, for example, by a thermocouple thermal expansion element, with advantageous heat conversion efficiency to mechanical work. fillings can be solved with flexible elemental seals (bellows, sock-roll...).

Another use of the heat dilatation restorer is where the thermal regenerator (heat engines, refrigerators, heat pumps) is used to increase the output power or as a servo motor.

Claims (1)

A heat regenerator for generating mechanical power by thermal expansion of its regenerative filler, characterized in that it consists of a foil (4) as heat-regenerative filler of a memory effect material which is stacked or folded from a solid strip at its increased depths and fastened in place of spaced strips, the fastening by the connecting elements (2) being formed on one side by clamping segments (1) freely slidable in the housing (3) having a recess for the inlet and outlet of the heat transfer fluid; 5j fixedly attached to the housing (3) or to the sliding clamping segments of another regenerator block.