JPS58109701A - Thermo-hydraulic convertor - Google Patents

Abstract

PURPOSE:To obtain large output by a structure wherein a working member made of configuration memory alloy is attached parallel to a fixed block and a moving block and the moving block is encircledly provided with a water guide frame for warm and cool waters and at the same time jointed to the piston of a hydraulic cylinder. CONSTITUTION:The plate type working member 11 made of configuration memory alloy is stationarily attached to the fixed block 13 at one end and to the moving block 14 at the other end thereof. The water guide frame 15 for supplying hot water and cold water to the member 11 is provided at the exposed part of the member 11 laying between both the blocks 13 and 14. The moving block 14 is coupled to the piston 17 in a cylinder block 16. When the hot water is supplied to the water guide frame 15, the working member 11 contracts itself, resulting in moving the piston 17 leftward and generating high pressure within the cylinder 18 and yet storing said high pressure within a pressure accumulator 21. On the other hand, when the cold water is supplied to the water guide frame 15, the working member 11 extends itself, resulting in moving the piston 18 rightward and introducing the oil within a tank 19 into the cylinder 18.

Description

[Detailed description of the invention] This invention d is a device for converting thermal energy into hydraulic power.

In particular, it relates to a hydraulic conversion device powered by the reversible displacement of a shape memory alloy that expands and contracts with low temperature differences.

As a conventionally known means of converting thermal energy into mechanical energy by using the reversible displacement of a shape memory alloy that expands and contracts with a low temperature difference, for example, as shown in FIGS. A set of two rotatably supported goo')-1
A belt 3 made of a shape memory alloy is stretched between 2 and 4, and cold water with a temperature difference is applied to the belt 3. There are methods that convert the expansion and contraction force of a shape memory alloy into rotational power by applying hot water 5, but these methods use a shape memory alloy that is plowed as an element that converts thermal energy into mechanical energy. Due to the low occupancy and, consequently, the activation of the shape memory alloy, an excess of cold water, I! There were inconveniences such as the need for water.

The present invention aims to improve the above-mentioned drawbacks of the prior art and provide a device that can obtain more effective mechanical energy and that converts and utilizes the mechanical energy into hydraulic pressure.

As mentioned above, when converting thermal energy into mechanical energy by utilizing the expansion and contraction of the shape memory alloy that occurs due to the thermal cycle of cold water and hot water, the obtained mechanical energy depends on the shape memory alloy used. and the number of times the shape memory alloy expands and contracts per unit time. In order to make the former appear, it is important to fill and arrange the shape memory alloy as densely as possible in a certain limited space. It is necessary to increase the heat transfer from cold water or hot water to the shape memory alloy as much as possible, and Jin's invention satisfies these requirements and is a good device.

Hereinafter, one embodiment of Jin's invention device will be described in detail with reference to FIGS. 3 and 4.

In these FIGS. 3 and 114 embodiments, the reference numeral 1
1 is an actuating member bundle in which several Wl pieces of shape memory alloy plate material or bar material are arranged in parallel at relatively /J% intervals,
Its one end side is fixed to the machine base 12 and the mounting block 13
The other end Ill is properly attached to the movable block 14 which is movably mounted on the machine base 12, and the exposed part of both blocks 13 and 14 has a mold surrounding it. water.

A water guide frame 15 is provided to supply cold water. In addition, 16 units were installed on the machine base 12, and a cylinder block, 17
diii] k'x) n, 18 a sh'J room 71, l
lF! ? An oil tank 21 communicates with the cylinder chamber 11 via a nick valve 20, and an achinium regulator 21 similarly communicates with the cylinder chamber 18 via a check valve 22. One end of the piston 17 is connected to the movable block 14. At the same time, a tension spring 23 is arranged at the other end to assist the operation when cold water is applied. Note that the force of the tension spring 23 is significantly smaller than the force generated when hot water is applied, so it does not interfere with the operation at that time.

Now, in the configuration of the embodiment, when hot water is supplied from the water guide frame 15, the actuating member bundle 11 made of 100 million alloy in shape contracts and moves the piston 17 to the left, and this movement causes the oil in the cylinder chamber 18 to rise to a high pressure. and check valve 2
When cold water is stored in the aquinium reactor 21 via the water guide frame 15 and then supplied from the water guide frame 15, the actuating member bundle 11
extends to return to its old position and moves the piston 17 to the right, so oil from the oil tank 19 is supplied to the cylinder block via the check valve 20 as a result of this movement.
Under ν, the same operation is repeated through this supply cycle of hot water and cold water.

For example, as the actuating member bundle 11 made of memory alloy having the above-mentioned shape, if a large number of plate-like bodies are arranged side by side with small gaps, as the detailed structure is shown in Fig. 4, hot water and cold water can be Because it flows through this gap, the supply is small (and economical).

By flowing hot and cold water at a high flow rate, the υ heat transfer coefficient increases, and shape memory alloys! The time required to reach the temperature is shortened, and as a result, the output can be improved.

Although the above embodiments have been described with respect to the case of a reversibly displaceable shape memory alloy, it is also possible to operate the same with a tension spring in the case of a normal shape memory alloy. Further, the shape memory alloy may be any shape memory alloy such as tliNiTi, and the shape may be plate-like, rod-like, etc. as described above.

As detailed above, the present invention has a structure in which plate-shaped or rod-shaped shape memory alloys are closely arranged side by side at small intervals, and output is obtained by applying hot water and cold water cycles to this structure. , the amount of hot water and cold water supplied is small;
Moreover, it has the advantage of producing a large output and being extremely effective as a drive source for equipment that obtains hydraulic pressure.For example, it can be used as an effective and appropriate @
It has the advantage of being able to give you a lot of energy.

[Brief explanation of drawings]

Figure 1 and Figure 2 are explanatory diagrams respectively showing a conventionally known thermal energy mechanical energy conversion mechanism, Figure 3 is a sectional view showing an embodiment of the present invention device to which the same mechanism is applied, and Figure 4 is a It is a partial plan view of the rear structure part same as the above. 11... Operating member bundle made of shape memory alloy, 12.
...Machine base, 13...Block with handle, 14...Movable block, 15...Water guide frame, 1
6... Cylinder block, 17... Piston,
18... Cylinder chamber, 19... Oil tank, 21
...-Achiniumreta. Patent applicant: Mitsui Engineering & Shipbuilding Co., Ltd. agent, Masaki Yamakawa (and one other person) Procedural amendment (voluntary) 113 W Year Month 4 comments'
1. Director-General of the Agency 5 Ryo, 1.281
Medium color ノ：show u、'! , 11+56 Patent Application No. 20806
No. 7 2, Name of the invention f; 1; Device 3 for converting thermal energy into hydraulic pressure, corrector skewer 1'1. (Deposit name (name) (590) Mitsui Engineering & Shipbuilding Co., Ltd. e, Contents of the amendment Figure 3 will be amended as shown in the attached drawings. Mon. To the Director-General of the Japan-China Agency, 57, 3.-
1.1, 7.1+ Display of 1982 Patent Application No. 208067 2, Name of the invention Device for converting thermal energy into hydraulic pressure 3, Relationship with the case of the person making the amendment Patent Name of applicant (name)
(590) Mitsui Engineering & Shipbuilding Co., Ltd. - Number of inventions increasing due to amendments...5, Measures for amendments Figure 3

Claims (1)

[Claims] The actuating member, which consists of a plurality of shape memory alloy plates and rods, is attached in parallel at small intervals to a fixed mounting block and a movable block connected to the piston of a hydraulic cylinder. Hot water is provided to form a bundle of members and to surround the exposed portion of the bundle of actuating members.
A device that converts thermal energy into hydraulic pressure, characterized by having a water guide frame that alternately supplies cold water.