JP2014145355A - Heat engine applying magnetic characteristics of metal thermosensitive magnetic material thereto - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat engine applying magnetic characteristics of a metal thermosensitive magnetic material thereto.SOLUTION: A heat engine comprises an annular track 1 formed from a metal thermosensitive magnetic material and a mechanism in which the track 1 is rotationally movable. A part of the track 1 is immersed in a liquid equal to or lower than a Curie temperature of the metal thermosensitive magnetic material, and the remaining track 1 is placed in an atmosphere equal to or higher than the Curie temperature. A magnetic field is prepared by placing a magnet 2 at a liquid level position, and the track 1 is passed through the magnetic field. After the track 1 is magnetized in the liquid equal to or lower than the Curie temperature, a predetermined region of the track 1 in the magnetic field is demagnetized by being heated in the atmosphere equal to or higher than the Curie temperature, and the track 1 is moved by generating a trust to move the track 1 in a direction of demagnetization. While the heated region of the track 1 enters the liquid and moves, the track 1 is cooled equal to or lower than the Curie temperature.

Description

  The present invention is based on the distinctive magnetic characteristics of the sensitive magnetic / nonmagnetic switching function shown before and after the Curie temperature of the metal temperature-sensitive magnetic material and the metal feeling made by focusing on the fact that the metal is a heat conducting material. The present invention relates to a heat engine that applies the magnetic properties of a thermomagnetic material.

  Conventionally, methods and heat engines have been devised to convert thermal energy into mechanical energy using the displacement of magnetization in the vicinity of the Curie temperature of a magnetic material. In order to obtain it, the energy conversion efficiency is low because a large temperature difference is required. On the other hand, temperature-sensitive ferrite has excellent magnetic properties but low thermal conductivity, so heat exchange efficiency during heating and cooling is low. However, heat engines that apply the magnetic properties of magnetic materials have not yet been put into practical use.

JP-A-2-106183 (Magnetic Fluid Heat Engine) JP-A-6-141571 (Magnetic Heat Engine) JP-A-6-141572 (magnetic material engine)

Japanese Patent Application No. 2012-270755 (heat engine applying the magnetic properties of metal thermosensitive magnetic materials) Japanese Patent Application No. 2012-85881 (Thermomagnetic Actuator) Naoshi Mijo, (ABC of Motor), Kodansha Publishing, P196-P199

  The present invention has been made for the purpose of providing a heat engine that solves the conventional problems and applies the magnetic properties of a practical metal temperature-sensitive magnetic material with high energy conversion efficiency.

The present invention for solving the above problems is as follows.
It is equipped with a ring-shaped orbit made of a metal temperature-sensitive magnetic material and a mechanism that allows the orbit to rotate. A part of the orbit is immersed in a liquid having a temperature lower than the Curie temperature of the metal temperature-sensitive magnetic material, and the other orbit is higher than the Curie temperature The magnet is fixedly placed at the liquid level, a magnetic field is created, the orbit is passed through the magnetic field, the orbit is magnetized in the liquid below the Curie temperature, and then a predetermined region of the orbit in the magnetic field is formed. Demagnetize by heating in an atmosphere above the Curie temperature, generate a thrust that moves the track in the demagnetized direction, move the track, and while the heated region of the track enters and moves into the liquid, -It has been possible to provide a heat engine characterized by cooling to a temperature below.

  In order to obtain a sufficient magnetization displacement in the orbit of a general magnetic material such as Fe and Ni, a temperature difference of several hundred degrees is required between the low temperature region and the high temperature region of the magnetic material orbit. It is characterized by the formation of an annular orbit with a temperature-sensitive magnetic material. The temperature difference between the low temperature region and the high temperature region in the magnetic field is sufficient with a temperature difference of several degrees before and after the Curie temperature of the metal temperature-sensitive magnetic material. In addition to being able to obtain a large magnetization displacement, since it is a metal, it has good heat conduction, and since the cooling means is a liquid, it can cool the orbit uniformly and quickly, and it can be used in heated and unheated regions in a magnetic field. As a result of making a clear boundary between the non-magnetic region and the magnetic region, a heat engine having high energy conversion efficiency and a large driving force can be provided.

  At present, metallic thermosensitive magnetic materials such as Fe-Ni, Fe-Ni-Cr, etc. are produced and used in a limited manner as electromagnetic induction heating materials and temperature switch materials for electromagnetic cookers. While production can be dramatically expanded to contribute to industrial development, it is expected that development and application of magnetic materials with even better characteristics will be promoted.

  Conventionally, a working material for converting thermal energy into mechanical energy is generally a gas centering on a steam engine and has been a volume expansion or pressure increase of the gas, but the working material of the present invention is a metal. This is a temperature-sensitive magnetic material, which is based on the characteristic magnetic characteristics of the sensitive magnetic / non-magnetic switching function shown before and after the Curie temperature of the material and excellent heat conduction. It is a very simple system in which the thermal energy of the means can be used stationary.

It is an operation | movement principle figure of the Example of the heat engine of this invention. It is a correlation diagram of magnetization and temperature of a metal thermosensitive magnetic material and a general magnetic substance.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an operation principle diagram of an embodiment of a heat engine according to the present invention.

  In this embodiment, metal temperature-sensitive magnetic material thin plates having predetermined dimensions are arranged at appropriate intervals to form an endless track 1, and the track 1 is supported by a rotating body 3 so that the track can be rotated. A magnet 2 is fixedly arranged vertically at a liquid surface position to form a fixed station, and a part of the lower side of the endless track 1 is immersed in a liquid below the Curie temperature of the metal thermosensitive magnetic material, and the other tracks are curly. This is an embodiment in which the mobile station is placed in an atmosphere above the temperature.

  In practice, the track 1 is formed by bending a metal temperature-sensitive magnetic material thin plate having a predetermined width at a predetermined length, or grooving a metal temperature-sensitive magnetic material having a predetermined width and thickness at an appropriate interval, or forming a hole. Opening, stitching, extrusion molding or integral molding with a mold, thin-walled tubes, countless bar-shaped, needle-shaped, tubular, spherical, etc. metal temperature-sensitive magnetic material pieces can be assembled or accumulated It can also be housed in a container or the like, or made of a metal net of a metal temperature-sensitive magnetic material or the like.

  In addition to the endless track, the annular track 1 can be a concentric cylinder or a concentric disk-shaped track 1.

  The operation principle of this embodiment is as follows. For example, an endless track 1 made of a metal temperature-sensitive magnetic material having a Curie temperature of 25 degrees under the condition of a liquid temperature of 20 degrees and an atmospheric temperature of 50 degrees as shown in FIG. Explaining with the arranged embodiment, the orbit 1 is magnetized in a liquid of 20 degrees in a magnetic field created by the magnet 2 and then demagnetized by heating in an atmosphere of 50 degrees, in this process in the demagnetized direction. The orbit moves, causing the orbit to move, and the heated region of the orbit is cooled to below the Curie temperature while entering and moving into the 20 degree liquid, and the conditions of this series of processes continue to be met. As long as the rotation continues.

  Since the energy conversion of the present invention is based on the thermal cycle of heating and cooling around the Curie temperature of the metal thermosensitive magnetic material, the resulting rotational motion is basically slow.

  In implementation, it is possible to increase the rotational speed using a transmission or the like to make a rotating machine, or to drive the generator to construct a power generation system.

  FIG. 2 is a correlation diagram of the magnetization and temperature of a metal temperature-sensitive magnetic material, which is the material of the orbit 1 of the present invention, and a general magnetic material, and the magnetization of the general magnetic material becomes the Curie temperature specific to the material. As the temperature rises, the temperature decreases exponentially, whereas metal temperature-sensitive magnetic materials have distinctive magnetic properties with a sensitive magnetic / nonmagnetic switching function around the Curie temperature. .

  In FIG. 2, in order to obtain sufficient magnetization displacement necessary for converting thermal energy into mechanical energy, a general magnetic material requires a large temperature difference before and after the Curie temperature. Thus, it can be seen that the metal temperature-sensitive magnetic material requires a very small temperature difference before and after the Curie temperature.

  While the displacement of the magnetization of a general magnetic material is an analog change with respect to the Curie temperature, the metal temperature-sensitive magnetic material is a digital change.

  The magnet 2 for creating a magnetic field includes a permanent magnet, an electromagnet, and the like. However, when the temperature of the magnet 2 rises, the magnetic force decreases, so a heat countermeasure that suppresses the temperature rise of the magnet 2 is important.

  When using a liquid having a low temperature, even if the magnet 2 is immersed in the liquid, there is little decrease in the magnetic force, but depending on the liquid quality, the magnet may be corroded.

  As heat countermeasures, it is possible to take heat countermeasures such as heat insulation between the magnet 2 and a high temperature atmosphere as a heating means, and cooling of the magnet 2 with water cooling, oil cooling, air cooling, or other cooling medium.

  Since the heat engine of the present invention has a very simple operating principle and system and can be manufactured at low cost, it can be used by floating it on the liquid surface with a floating ring or the like so that the magnet 2 is at the liquid surface. It can be used as a liquid stirrer, or can be a toy floating on the sea or lake.

  In the implementation, the high temperature atmosphere can use natural energy such as geothermal or solar heat, or can use a heat source such as combustion heat or waste heat of combustible materials or combustible gas.

  Since the heat engine of the present invention utilizes the thermal energy of the temperature difference, if a metal thermosensitive magnetic material having a Curie temperature in a low temperature range can be developed in the future, the cold energy can be effectively utilized.

  Since the present invention is extremely simple in principle and configuration, it is combined with the development of further excellent magnetic materials in the future, and in a wide range of fields such as energy-related, electric power, medical, playground equipment as well as general industries. Is available.

DESCRIPTION OF SYMBOLS 1 ... Orbit 2 ... Magnet 3 ... Rotating body 4 ... Moving direction 5 of an orbit ... Rotating direction 6 ... Support

Claims (1)

  It is equipped with a ring-shaped orbit made of a metal temperature-sensitive magnetic material and a mechanism that allows the orbit to rotate. A part of the orbit is immersed in a liquid having a temperature lower than the Curie temperature of the metal temperature-sensitive magnetic material, and the other orbit is higher than the Curie temperature. The magnet is fixedly placed at the liquid level, a magnetic field is created, the orbit is passed through the magnetic field, the orbit is magnetized in the liquid below the Curie temperature, and then a predetermined region of the orbit in the magnetic field is formed. Demagnetize by heating in an atmosphere above the Curie temperature, generate a thrust that moves the track in the demagnetized direction, move the track, and while the heated region of the track enters and moves into the liquid, A heat engine, characterized by cooling below temperature.

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