JPS6396483A - Melter - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to a melting apparatus that is used to heat and melt a material to be melted in an extremely low gravity or zero gravity environment.

(Prior art) Conventionally, as a melting device as described in E, for example, the melting device described in "Nikkei Aerospace (separate volume) J 7 City Bases and Space Utilization" published by Nikkei McGraw-Hill in 1984, 1102
Some of them are described on pages 1 to 109, and their structures will be explained based on FIG. 4.

In the figure, reference numeral 100 is a furnace, and this furnace 100 is
It has a furnace inner surface 100a consisting of a plurality of paraboloids whose apexes are symmetrical, and also forms a sealed space 101, with halogen as a hair stage added to the apex of each paraboloid. Lamp 102 is attached. Further, in the center of the furnace 100, there are provided a cylindrical container 103 made of a translucent material and a speaker 104 as an H2 sound dryer that opens toward the inside of the container 103. Note that an inert gas is contained inside the furnace 100.

The furnace 100 described in L suspends a material to be melted (for example, a pole cap made of quartz glass) M inside a container 103 in an extremely low gravity or zero gravity environment, and emits a sound wave pattern from a speaker 104 into the container 103. The object to be melted M is held at the center of the furnace 100 by generating a
Heat to melt.

(Problems to be solved by the invention) However, in the conventional melting device as described above,
This is because a sonic floating method was used in which a sonic wave pattern was generated within the container 103 to maintain the floating position of the material to be melted M.

(2) Pressure is constantly applied to the material M to be melted by sound waves.

(2) Thermal efficiency is reduced due to the container 103 interposed between the halogen lamp 102 and the object M to be melted.

(2) When indirect heating means of the heat-resistant cage T heated by the halogen lamp 102 is employed, the sound wave pattern may be disturbed by this heating means, and as a result, the arrangement of the heating means is difficult.

■The melting device is installed on a navigation vehicle in orbit around the earth.
In this case, since negative acceleration (deceleration) due to the resistance of the thin atmosphere acts on the navigation vehicle, the material to be melted M is in the furnace 1.
00, and at this time, the above-mentioned sound pressure is always acting, so that the melted material M cannot achieve a completely weightless state.

There were problems such as.

(Purpose of the Invention) This invention was made by focusing on the above-mentioned problems, and it is possible to maintain the material to be melted in a weightless state and at a predetermined position in the furnace body, and to melt the material with high ripening efficiency. The purpose of the present invention is to provide a melting device capable of performing the following steps.

[Structure of the Invention] (Means for Solving the Problems) A melting device according to the present invention heats and melts a material to be melted in an extremely low gravity or zero gravity environment, and includes a space in which the material to be melted is suspended. A furnace body forming a furnace body, a displacement detection means for detecting displacement of the object to be melted within the space, a means for heating the object to be melted, and a position control means for changing the position of the furnace body. It is characterized by

(Heavenly Example) The present invention will be explained below based on the drawings.

FIGS. 1 to 3 are diagrams illustrating an embodiment of the present invention.

That is, as shown in FIGS. 1 and 2, the melting device 1 includes two partition walls 3 inside a cylindrical casing 2.
Three storage chambers 4a, 4b, 4c separated by a and 3b
A conventionally known rate gyro 5, battery 6, computer 7, and output distribution device 14 are housed in a housing chamber 4a at one end (the upper housing chamber in FIG. 2), and an intermediate The furnace body 8 and the gas distributor 15 are housed in one housing chamber 4b, and the thruster is housed in the other housing chamber 4C.
It accommodates 9,9 fuel pumps 10. The thrusters 9.9 are position control means for the furnace body 8 in this embodiment, and are provided at opposite positions on the side surfaces of the casing 2, and are located at the top, bottom, left and right of the casing 2 in FIG.
Each of the injection nozzles 9a has five injection nozzles 9a that open in the diametrical direction.

The furnace body 8 has a substantially spherical shape forming a sealed space 11, and includes a large number of reflecting portions 8a that open toward the center of the furnace body 8 and protrude outward. . The reflective portion 8a has a parabolic inner surface, and is provided with a halogen lamp 12 as a heating means at an apex position opposite to the center of the furnace body 1. Note that a heat sink may be provided outside the furnace of the halogen lamp 12 to absorb and dissipate heat within the furnace body 8.

Furthermore, two two-dimensional image processing bags 13a and 13b are provided on the wall of the furnace body 8 as means for detecting displacement of the object M to be melted. One of the two-dimensional image processing devices 13a and 13b is at a position to capture an image based on the X-axis and y@ in the space 11, while the other is at a position to capture an image based on the y-axis and y@ in the space 11.
Both are connected to the computer 7, in a position to capture images based on the z-axis.

Here, the connection system of each device will be explained based on FIG. Both two-dimensional image processing devices 13a and 13b,
The output distribution device 14 is connected thereto. A battery 6, a halogen lamp 12, and each thruster 9 are connected to the output distribution device 14, and each halogen lamp 12 and each thruster 9 are controlled by a command signal from the computer 7. Supplies power to operate.

Next, the operation of the melting device 1 will be explained. First, the material to be melted M is floating in the center of the space 11 within the furnace body 8 in an extremely low gravity or 'S gravity state, and at this time, the melting device 1 is also in a floating state. Note that in order to set the object M to be melted at the center of the space 11, a holding means not shown may be used. Then, by lighting each halogen lamp 12, the light is reflected by each reflecting part 8a and focused on the center part of the air r#n11, and the object M to be melted is heated and melted in a non-contact state. do.

Further, in the melting apparatus 1, the apparatus itself or the material to be melted M moves relative to each other during the above processing, and the furnace body 8 and the material to be melted M move relative to each other.
When a displacement occurs between the rate gyro 5 and the two two-dimensional image processing devices 13a and 1
3b and the displacement detection data of each two-dimensional coordinate ball are input into the computer 7, the displacement (or moving speed) of the object M to be melted at the three-dimensional coordinate 1 is processed in real time, and the displacement is further followed. By calculating the position control amount of the melting device 1 itself to cause the melting device 1 to move and sending a command signal to the output distribution position 14, gas is injected from the selected nozzle 9a of the thruster 9 and the melting device 1 is move.

Therefore, the melting apparatus 1 moves to follow the movement of the object to be melted-M relative to the furnace body 8, and operates to keep the object to be melted M at the center of the furnace body 8 at all times. In addition, the melting device 1
Of course, the control can be performed not only during the heat treatment but also during the cooling treatment of the material M to be melted.

According to the melting device δ1 according to this embodiment, it is clear that no external force acts on the material to be melted M, and since no other object is interposed between the halogen lamp 12 and the material to be melted M, thermal efficiency is also good. Furthermore, when the melting device 1 is used in earth orbit, even if negative acceleration (deceleration) acts on the melting device 1 due to aerodynamic resistance due to the diluted atmosphere, the above-mentioned control allows the melting device to be substantially The object M can be melted while being kept in a weightless state in the space 11 and at the center of the furnace body 8.

Note that the heating means of the melting device is not limited to the embodiment described in L. In addition to the halogen lamp 12, it is also possible to use a Canon lamp, etc., and furthermore, indirect There is no problem even if the heating means is arranged near the object M to be melted.Furthermore, as a means for detecting the position of the object M to be melted, it is also possible to use a rangefinder sensor using ultrasonic waves or a laser. However, optical means are even more desirable from the viewpoint of not having to apply external force to the material M to be melted.

Furthermore, the detailed structure of the melting device is not limited to the above embodiment; for example, it is also possible to float the furnace body 8 to which the tester 9 is directly attached and remotely control the furnace body 8. The shape and structure of the casing, the arrangement of each control device, etc. can be changed as appropriate.

[Effects of the Invention] As described above, the melting apparatus of the present invention is an apparatus for heating and melting a material to be melted in an extremely low gravity or zero gravity environment, and a space in which the material to be melted is suspended. a furnace body forming a furnace body, a displacement detecting means for detecting displacement of the object to be melted within the space, and an addition to the object to be melted;
Since it is equipped with a p-stage and a position control means for changing the position of the furnace body, it is possible to maintain the material to be melted in a predetermined position in the furnace body in a zero-gravity state, and to melt it thermally efficiently in a non-contact state. It has an excellent effect in that it can be carried out.

[Brief explanation of the drawing]

FIG. 1 is a sectional view illustrating a melting device according to an embodiment of the present invention, FIG. 2 is a hollow view partially cut away to explain the melting device shown in FIG. 1, and FIG. FIG. 7JS4, which is an explanatory diagram systematically showing the connection of the control device, is a cross-sectional diagram illustrating a conventional melting device. 1... Melting device, 8... Furnace body, 9... Thruster
(position control means), 11...space, 12...halogen lamp (heating means), 13a, 13b...two-dimensional image processing device (displacement detection means), M...object to be melted.

Claims (1)

[Claims] (1) A device that heats and melts a material to be melted in an extremely low gravity or zero gravity environment, which includes a furnace body that forms a space in which the material to be melted floats, and detects the displacement of the material to be melted within the space. A melting apparatus comprising: a displacement detecting means for changing the position of the furnace body; a heating means for the object to be melted; and a position controlling means for changing the position of the furnace body.