JPS5947145B2 - hot gas engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a hot gas engine, and its purpose is to compactly arrange the main components of a hot gas engine, such as a heater, a cooler, a regenerator, and a cylinder. The object of the present invention is to provide a hot gas engine that can be operated with high efficiency.

Examples of the present invention will be explained below with reference to drawings.
The figure is a front view, the second figure is a plan view, the third figure is a right side view, and the fourth figure is a front view.
The figure is a sectional view taken along line A-A in Figure 1, and Figure 5 is a sectional view taken along line B-B in Figure 1.
The line sectional view, FIG. 6, is a view taken along the line C--C in FIG. 4.

Mainly referring to FIGS. 3 and 4, 102 indicates two plates 1,
2 is polymerized through a sealing member 8,
506 is a cooler similar to the heater 102 shown in FIG. 6, and is formed by overlapping the bottom plate 48 of the water tank 6 and the plate material 5 with the O-ring 34 in between.

Working gas heat transfer sidewall 102 of heater 102 and cooler 506
A, 506a has a number of annular grooves 36, 38 cut into it, as can be clearly understood from FIG.
Further, a concave groove 41 having an inclined surface 41a and the deepest center is carved in the center of the heating wall 102b of No. 2, and the groove 36 of the heater 102 is connected to the outer peripheral portion 102a-2 of the working gas heat transfer side wall 102a. Slope facing portion 102a of the groove 41
It is cut into 1.

The annular groove 36 in the inclined surface facing portion 102a-1 gradually becomes deeper as it approaches the outer peripheral portion 102a-2, in other words, the depth becomes shallower as it approaches the center.

The heater 102 and the cooler 506 face each other vertically with a gap between them, and a cylindrical high temperature expansion cylinder 3 and a regenerator 4 are arranged in parallel between them.

By the way, the portions of the high temperature expansion cylinder 3 that are in contact with the heater 102 and the cooler 506 are sealed with seal members 9, 9, and the end faces of the regenerator 4 are similarly sealed with seal members 10 and 10.

Further, the regenerator 4 has both openings connected to the high temperature expansion cylinder 3 through the grooves 36 and 38 of the heater 102 and the cooler 506.
It communicates with the inside of the low-temperature compression cylinder 7, and the inside is filled with a large number of wire meshes (not shown).

The cooler 506 includes an open water tank 6 and is water-cooled, and a low-temperature compression cylinder 7 is disposed on the bottom plate 48 of the water tank 6 via a seal member 40.

Furthermore, the low-temperature compression cylinder 7 and the above-described high-temperature expansion cylinder 3 are located on the same axis and communicated through the hole 39 of the cooler 506.

An arm support 11 is provided on the upper surface of the low-temperature compression cylinder 7.
and a crank support 12 are provided.

Further, one end of a displacer piston arm 20 and a power piston arm 23 are supported by connecting pins 22 and 31, respectively, on the arm support 11, and the crank support 11
A crank 14 is rotatably fixed to 2.

Now, inside the high temperature expansion cylinder 3 and the low temperature compression cylinder 7, there is a displacer piston 15 and a power piston 16.
are arranged, both pistons 15° 16 are connected to both cylinders 3,
It is designed to be able to move back and forth within 7.

Of course, the displacer guide 17 fixed to the upper part of the displacer piston 15 can reciprocate within the piston body 32 of the power piston 16.

Referring also to FIG. 5, each piston 15.16 is fixed to one end of a connecting plate 18.19, and the other end of each connecting plate 18.19 is connected to a displacer-piston arm 20 and a connecting pin 21.27. It is connected to the power piston arm 23.

Therefore, both piston arms 20 and 23 undergo rocking motion due to the reciprocating motion of the displacer piston 15 and the power piston 16.

Meanwhile, the other ends of the displacer piston arm 20 and the power piston arm 23 are connected to connecting rods 24, 25 via connecting pins 26.30, and the connecting rods 24.2
The other ends of 5 are connected to the crank pin 28 of the crank 14 via bearings 29 and 42, respectively.

For this reason, the crank wheel 43 with the crank pin 28 fixed,
44, 45° 46 rotates, and similarly the crank wheel 4
Flywheel 13°13 fixed to said shaft 47.47 via shirt T-47, 47 fixed at 3°46
moves in rotation.

The operation of the embodiment configured as described above will be explained below.

First, cooling water is poured into the water tank 6 of the cooler 506, and a suitable combustion device such as the gas burner 33 is used to heat the heating wall 1 of the heater 102.
When heating 02b, the heater 102, high temperature expansion cylinder 3, cooler 506, low temperature compression cylinder 7, regenerator 4
The working gas, such as air, surrounded by the air is heated on the heater side and cooled on the cooler side.

At this time, when the flywheel 13 is manually rotated, the connecting rods 24 and 25 connected to the crank pin 28 of the crank 14 operate, and the displacer-piston arm 20, which is connected by the connecting pin 26, 30,
The power piston arm 23 swings.

As a result, the connecting plates 18.19 connected to each arm 20.23 move up and down, applying a starting force, and finally displacing the displacer piston 15 and the power piston 1.
6 continues its reciprocating motion in synchronization with periodic changes in temperature and pressure.

This is because after startup, the displacer piston arm 2
0 and the power piston arm 23 swing with a certain phase difference (for example, 90°), and the displacer piston 15 and the power piston 16, which are connected to the connecting plate 18, 19, are connected to the hot expansion cylinder 3 and the cold compression cylinder 7, respectively. This is because the working gas sealed in the internal space moves between the heater side and the cooler side as the working gas reciprocates within the inner space with the above-mentioned phase difference.

In other words, after startup, the sealed working gas is used in the heater 102.
It reciprocates through the working gas passage consisting of the holes 35 in the heater 102, the many grooves 36 in the heater 102, the space 37 in the regenerator 4, the many grooves 38 in the cooler, and the holes 39 in the cooler, and periodically adjusts its temperature and pressure. changes, and the reciprocating motion of the power piston 16 continues.

The operating principle of the power piston 16 described above is exactly the same as that of a normal Stirling engine.

Of course, as the power piston 16 and the displacer piston 15 continue to reciprocate, the arm 23.20 swings through the connecting plate 19. 13 continues to rotate.

Now, here, the theoretical thermal efficiency η of this engine is expressed by patent TC η-1--(TH, To: absolute temperature) TH in which the temperature of the heater is TH1 and the temperature of the cooler.

Therefore, in order to increase the efficiency η, ■ Increase the temperature TH of the heater as much as possible, or lower the temperature TO of the cooler as much as possible to reduce the temperature difference between the two, and ■ Keep the temperatures TH and Tc constant. If so, the temperature difference ΔTH between the working gas inside the engine and the working gas heat transfer side wall 102a of the heater 102 and the temperature difference ΔTQ between the working gas inside the engine and the working gas heat transfer side wall 506a of the cooler 506 are made extremely small. For example, when the heating heat source has a small capacity, such as in the case of a hot air engine for teaching materials, it is necessary to make the heat transfer area of the heater and cooler for the working gas as large as possible, and to improve the heating efficiency. A good structure is an important element.

Therefore, in the present invention, a large number of grooves 36. Cut 38,
In addition, the heating wall 102b of the heater 102 is provided with a concave groove 41 that is inclined toward the center so that heating from the gas burner 33 can be performed effectively, and has a structure that prevents the combustion flame from spreading.

Note that since the depth of the grooves 36 on the heater 102 side becomes shallower toward the center, the number of grooves 36 is sufficient, and flow resistance does not increase.

In addition, the long grooves 36 of the flow passages located near the outer circumferential portion 102a-2 of the working gas heat transfer side wall 102a of the heater 102 and the outer circumferential portion of the inclined surface opposing portion 102a-1 have sufficient groove depth, so that a large amount of working gas can flow through them. Since the short groove 36 of the flow path near the center of the heater in the inclined surface facing portion 102a-1 has a shallow depth, the working gas does not flow much (G).

Therefore, the working gas is heated for a sufficient period of time by the long groove 36 of the flow path.

Therefore, even if it is a hot gas engine for teaching materials that uses a small-capacity heating source such as a gas burner or an alcohol lamp,
According to the present invention, it is possible to provide a highly efficient engine with a large output.

Furthermore, in the present invention, the heater and the cooler are arranged to face each other, and the high temperature expansion cylinder and the regenerator are arranged in parallel within the space between them, and the low temperature compression cylinder is placed above the cooler on the same axis as the high temperature expansion cylinder. This arrangement has the advantage that the above-mentioned components can be assembled extremely compactly.

Further, according to the present invention, it is only necessary to inject cooling water into the water tank 6 of the cooler 506, and conventional cooling water supply and drainage equipment is not required, so that the structure of the cooler can be significantly more compact than that of the conventional cooler. is now possible.

Further, the heating source may be a commercially available gas burner, alcohol lamp, etc., and has great advantages as a hot air engine for teaching materials, such as being extremely easy to operate and handle.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the present invention, FIG. 2 is a similar plan view, FIG. 3 is a similar right side view, FIG. 4 is a sectional view taken along line A--A in FIG. The drawings are a sectional view taken along the line B--B in FIG. 1, FIG. 6 is a sectional view taken along the line C--C in FIG. 4, and FIG. 7 is an enlarged view of the main part of FIG. 4. 1...Plate material, 2...Plate material, 3...
...High temperature expansion cylinder, 4...Regenerator, 5.
...Plate material, 6...Aquarium, 7...
Cold compression cylinder, 8... Seal member, 9.
... Seal member, 10 ... Seal member,
11... Arm support, 12... Crank support, 13... Flywheel, 1
4...Crank, 15...Displacer piston, 16...Power piston, 1
7... Displacer guide, 18...
...Connecting plate, 19...Connecting plate, 20...
・Displacer piston arm, 21...
Connecting pin, 22...Connecting pin, 23...
・Power piston arm, 24...Connecting rod, 2
5...Connecting rod, 26...Connecting pin, 2
T...Connection pin, 28...Crank pin, 29...Bearing, 30...Connection pin, 31...Connection pin, 32・・・・・・
Piston body, 33... Gas burner, 34.
...0 ring, 35...Heater hole, 3
6...Groove, 37...Regenerator space, 38
... Groove, 39 ... Cooler hole, 40.
... Seal member, 41 ... Concave groove, 41a
...Slope, 42 ...Bearing, 4
3...Crank car, 44...Crank car, 45-...Crank car, 46...Crank car, 47...Shaft, 48... ...Bottom plate, 102... Heater, 102a...
Working gas heat transfer side wall, 102a-1... inclined surface opposing part, 102a-2... outer peripheral part, 102b...
... Heating wall, 506 ... Cooler, 506
a...Working gas heat transfer side wall, 506b...
・Cooling wall.

Claims (1)

[Claims] A flat plate-shaped cooler 506 formed by overlapping 12 plates 1, 2 and 5, 48 and a heater 102 are disposed vertically opposite to each other with a gap therebetween, and are arranged below the heater 102. A heating source 33 is disposed in the upper part of the cooler 506, and a cylindrical high temperature expansion cylinder 3 and a regenerator 4 are arranged in parallel between the cooler 506 and the heater 102. In a hot gas engine in which a cold compression cylinder 7 is arranged coaxially with a heating wall 102b of the heater 102,
A concave groove 41 having an inclined surface 41a is carved in the center of the cooler 506, and a large number of grooves 38 are cut into the working gas heat transfer side wall 506a of the cooler 506, and similarly, the outer circumference of the working gas heat transfer side wall 102a of the heater 102 is 102a-2 and the inclined surface facing portion 102a-1 of the groove 41 have a large number of annular grooves 36.
These grooves 38 and 36 communicate the regenerator 4 and the high-temperature expansion cylinder 3, and the large number of annular grooves 36 in the inclined surface facing portion 102a-1 gradually widen as they approach the outer peripheral portion 102a-2. A hot gas engine characterized by a deep groove. 2. The hot gas engine according to claim 1, wherein the cooler 506 is equipped with an open water tank 6.