JPS6172880A - Driving device using temperature differential - Google Patents

Abstract

PURPOSE:To make a rotary shaft rotatable with a temperature differential utilized, by installing a deformable temperature detecting part, as a simple substance, at the base end side of a connecting rod installing a weight in its tip end, while attaching the plural numbers of this simple substance to a periphery of the rotary shaft set up in and around a boundary surface between the atmosphere and a liquid. CONSTITUTION:A rotary shaft 3 is horizontally installed in and around a boundary surface H between the atmosphere having a temperature differential and a liquid through bearings, and plural numbers of simple substance 1-1-1-8 (hereinafter, appended figures omitted) are radially set up in this rotary shaft 3 at the specified intervals. Each simple substance 1 is made up of installing a retractable temperature detecting part (or an expandable coil-form temperature detecting part) 7 composed of a form memory alloy and a bimetal at the base end side of a connecting rod 6 installing a weight in its tip end. This temperature detecting part 7 is bent and expanded longer as shown in illustration when ambience temperature varies, whereby each simple substance 1 is installed so as to make it deformable in a state of being bent by about 90 deg. from the initial straight line state. And, utilizing the deflection of a center-of-gravity position of the whole device caused by deformation of the simple substance 1, the rotary shaft 1 is made so as to be rotated.

Description

[Detailed description of the invention] - Temperature technology that is a further development of the tSO Koko No. ``Drive device that utilizes temperature differences'' and the patent application Sho TY-OQII Coco No. ``Drive device that uses humidity differences.'' This relates to a drive device that uses the difference.

That is, in the prior application, a liquid and a gas having a temperature difference,
The large number of weights in these driving machines, which tend to have liquid pressure I/cTo with differences in temperature and specific gravity, become unbalanced in their "distance" from the axis on the left and right sides of the vertical line passing through the axis due to changes in surrounding temperature. However, in the present invention, the main means of rotation is to make the F number of the weights on the left and right sides of the vertical line on the axis unbalanced, rather than shortening the distance between the shaft and the weight. This is an improved version.

To describe an example in detail below, Fig. 7 shows a single unit of this drive device, and a temperature sensor (hereinafter simply referred to as a two-way detection section) using a coiled or curved two-way shape memory alloy. )
At both ends, there is a short connecting rod fixed to the shaft 3 and a long connecting rod 6 fixed to the weight 5.

When the ambient temperature changes, the two-way detection part changes its direction, bends, and expands as shown in Figure 1. 3. Move the weight S to the tip position. In this case, the distance 0 from the axis 3 to the weight J is the same as the distance A at the beginning.

The detection part is the third one. I - If you change the shape from a 1-shape to an L-shape as shown in the diagram, you can create a simple and powerful unit I.

However, since this two-direction detection section 7 only bends and does not extend,
If it is bent, the distance from the shaft 3 to the weight S will be slightly shorter than the distance I if it is not bent. In addition, in order to bring the pongee S as close as possible to the tip position s' of the line E, the bending angle B' of the single body l is set to be 90 degrees or more. Of course, if the temperature returns to normal, the shape of the single element L will return to its original shape. Instead of the two-way detection section, a bimetal or other device that bends the angle due to temperature changes may be used.

When using a detection part made of a unidirectional shape memory alloy, KFi
, an external force is required to move the detection unit in the opposite direction, so the analogy is a cloth! f, A dogleg-shaped unidirectional shape memory alloy detection part r (hereinafter simply unidirectional detection part t) between the connecting lever and 4 as shown in Figure A.
It is sufficient to connect both ends of the spring 9 with a bias spring 9, so that opposite movements occur when the temperature changes.

If the detection part is made of bimetal, it may be made into a fill shape. For example, if a strip-shaped bimetal can be used, if the qth part is formed into a spiral shape as shown in the figure, and the connecting rods, ≦ are fixed to both terminals /l and /ko, it can move in two directions according to thermal changes. Detection section 7
The same effect can be obtained by changing the angle of the connecting rod base.

Among the above various detection units, for example, the third detection unit. FIG. 9 shows an example of the entire driving device using a single-piece mechanism having the two-direction detecting section 7 shown in the figure.

If the single units / - / -1-1 are arranged radially at regular intervals around the axis 3, and the axis 3 is placed horizontally near the boundary between the cold air ν and the heat #G, the q heated units can be detected. Department? -4~?
-T is L-shaped, is it a cooled detection part? −/~Ku ginseng becomes a state of work. Therefore, single unit /-/ /-ko and /
-3 to No.4 4 tip weights 3-/, j-J and 5
-3 to sz are collected on the left side of the plumb perpendicular knee J12) passing through axis 3, and only the moss of the single body/-3,1-3 weight S-3°S-3 is on the right side. Therefore, the center of gravity of the entire device is unbalanced, and is always biased to either the left or right side of the shaft 3. As long as there is a temperature difference that bends or stretches the sensing portion, the device continues to rotate in the opposite direction.

The reason why the solid line of the detection part in Fig. 9 is in the shape of a square instead of a craftsman is because when the device is rotating, the detection part has not yet been sufficiently cooled immediately after coming into contact with the cold air F from the hot water G. This example shows a case where there is no.

Similarly to the previous example, the temperature difference drive device shown in FIG. 1O is designed to obtain rotational force by making the number of weights included in the device unequal on the left and right sides of the axial vertical line.

The ring 13 is cut in half, and the center of the support rod 14 supported by lj outside the end is fixed to the horizontally extending shaft 17. In this item 13, one end is fixed to the terminal /4A, /3 position, and the temperature detection part 12 (hereinafter simply referred to as coil ) and a refining weight 20. fixed to the other end of the coil.
．． It has 2/, heavy lli! i! In addition, the coils itr and it can be tilted and moved along the annular ring 13 within a range of 90 degrees around the axis 17 by 71 degrees of the circumference.

As shown in the figure, take this same unit, M, N, and O. As shown in Fig. 11 and Fig. 1J, the shaft 17 is fixed in a radial manner to the shaft 7, and this shaft 17 is hung horizontally near the interface between cold air F and hot water G, and the single unit Lm at the same time. The degree of expansion and contraction of the t coils /I-/- and /1-/- and the movement position of the weight in @-"e O are roughly as follows.

The factors that determine the degree of expansion and contraction of the coil ITR and IT are the degree of exposure of the coil to cold air or hot water, the strength of the coil, the weight of the weight or coil, the relationship between their volume and buoyancy, the temperature of the cold air or hot water, and the rotation of the device. The speed, the speed of heat transfer of parts that make up a single unit, and other factors are intricately intertwined, so whether Figure 1O is standard or thermal.
The operation will be explained below with reference to figures. First, the coil will be explained as extending to twice the length in hot water as in cold air.

Single coil/l-/, single N coil/L/-3,
A single coil of O #1 is placed in 1100% cold air ν, so it becomes 6% of its original length, and a weight 20-/ is fixed to the terminal of the coil.

The positions of 2/-3 and 2/-da are in the through position shown in the figure. Single coil/? Since -/ is in ω% boiling water G, it has been expanded to a length of θoX, which is three times its original length. Therefore, the weight /-/ has moved directly below the right-end boundary surface H.

3% of the single coil y/l-co is immersed in FA hot water G, and it has expanded to twice that amount of SO%, so will it bulge in the cold air F? ! The weight 20-2 has moved to a position that is longer than the original distance from the terminal/J-5 by S%.

Similarly, coil 19-1 of single unit M has SO% expanded to 0% of Ashiko in hot water G, so 1#A-1 is the terminal of the coil/4A-Koyoshi's first circle. The distance on the ring is p t
It is moving to a position sθ% ahead.

The coil of unit N/l-3 is in heat @G. Since the SO% portion has increased by 1 times IooX, the portion in the cold air F is 50X combined! The heavy irons 0-3 are moved to a position that is longer by 5θ%fφ.

For a single O coil, 75% of it is in hot water, which is 3 times as much as isOX, so the amount in cold air is 75%.
%, Wataki J-san has been moved to a position where it has grown by 773%.

As shown in the figure (shaft 1
7 as the apex and fixed to the horizontally mounted shaft 17 at an angle angle, the result will be as shown in Fig. 1/ and Fig. 72. Therefore, as shown in the diagram, the number of X bells is 7 on the right side of the plumb line passing through axis 17, and 7 on the right side. Continue rotating in the direction.

I will omit the details because they are too complicated, but when you add up the M lids of the r coils themselves, the left side of the lead drawing line on the shaft 17 will be heavier than the right side.

The above is cold air at the top and hot water at the bottom! However, the upper side may be hot air and the lower side may be cold water.

You can also use a light amount of hot oil on the upper side and cold water on the lower side. The best thing to do is to be able to obtain a temperature difference at the interface that is sufficient for the detection unit or coil to move the weight. Although the coil of the temperature detection part has been described as a bidirectional shape memory alloy coil, 4Ii11. Of course it is possible.

This device is expected to be used as an engine as shape memory alloy technology and economic efficiency progress.

[Brief explanation of the drawing]

The drawings show an embodiment of a drive device using a temperature difference tS according to the present invention. FIGS. Figure 1 shows the state at the time of contraction, and No. JrlA shows the state at the time of elongation, which is a comparison. FIG. 3M shows the detection section of another embodiment.
The figure shows the contracted state, Figure D shows the state when it is stretched and bent into an L shape, and Figure H' shows another example in which the detection part is a single unit using a unidirectional shape memory alloy. 3 is an expanded state diagram of FIG. 3; FIG. Figure 7 is a side view of the detection unit using bimetal,
Fig. r is a front view of Fig. 7, Fig. 7 is a side view of the drive unit when the unit shown in Fig. 3 is installed on the rotating shaft, and Fig. m10 is the operation of the unit with two detection units arranged in the same section. Explanatory diagrams of the state, Figure 1/Figure 1 is a front view of the unit shown in Figure 1O arranged with the phase shifted about the rotation axis, and Figure 1 is a side view of Figure 1I.

Claims (2)

[Claims] (1) It has a unit consisting of a connecting rod with a weight attached to one end and an extendable detection section connected to the connecting rod that attaches the end to the rotating shaft at the other end, and this unit has: A plurality of weights are installed radially at regular intervals around the horizontally supported rotating shaft near the interface between the atmosphere and the liquid, which has a temperature difference, and the position of the weight is adjusted by changing the temperature of the detection part. A drive device that utilizes the temperature difference created by moving along a vertical line passing through the central axis. (2) It has a circular ring that connects the ends of the support rod whose center is attached to the rotating shaft and is supported by dividing it in half, and this circular ring has:
One end is fixed to the terminal, and the other end is fixed to a weight that moves along the ring. Temperature detection parts that expand and contract with temperature changes are provided at two places through the ring to form a single unit, and this unit is made up of:
A drive device utilizing a temperature difference, in which the support rods are mounted at the center and arranged in parallel at intervals and out of phase with rotary shafts that are horizontally supported near the interface between the atmosphere and a liquid, which have a temperature difference.