JPS61247850A - Stirling engine - Google Patents

Abstract

PURPOSE:To obtain Stirling engine which has a high degree of heat-efficiency, by providing guide plates for guiding flames from a burner for heating the top heaters in cylinders circumferentially arranged, toward the outer peripheries of the heaters. CONSTITUTION:Cylinders 30a through 30e and heat-exchangers 63a through 63e which are circumferentially arranged, constitute heaters, and are heated by flames from a burner arranged thereabove. The flames from the burner are directed toward the outer periphery of the engine body, being guided by guide plates 121 which are arranged outside of the heat-exchangers 63a through 63e with gaps 70a through 70e therebetween, and therefore, are discharged outside after being heat-exchanged with the outer peripheries of the heating sections of the heat-exchangers. Since the guide plates 121 guide the flames along the heat-exchanging surfaces of the heat-exchangers, it is possible to enhance the heat efficiency of the Stirling engine.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a Stirling engine.

(Prior Art) Conventionally, as shown in FIG.
a piston cylinder 11 that accommodates a piston cylinder 11 and has an expansion space A for working gas in the upper part; a heating section 14 of a heat exchanger 13 that communicates with the expansion space A via a communication pipe 12;
A Stirling engine is proposed that includes a combustion machine 15 disposed above the piston cylinder 11.

(Problems to be Solved by the Invention) The heating section 14 of the heat exchanger 13 of the conventional Stirling engine is composed of an outer cylinder 16 and an inner cylinder 17, and between the outer cylinder 16 and the bottomed inner cylinder 17. A working gas flow passage 18 is provided in the
The combustion flame C of the combustor 15 is ejected into the inner cylinder 17 and the outer peripheral surface of the outer cylinder 16, and a guide part for the combustion flame C to be ejected is provided on the outer peripheral surface of the outer cylinder 16. Because there is no
The combustion flame C that comes into direct contact with the outer cylinder 16 heats the heating section 14, but the combustion flame C that does not come into contact with it is wasted, resulting in large heat loss, making it impossible to obtain a Stirling engine with good operating efficiency. Ta.

(Objective of the Invention) In view of the above-mentioned conventional problems, an object of the present invention is to provide a Stirling engine with low heat loss and good operating efficiency.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a movable piston 33a.
, 33C, a plurality of piston cylinders 30a-3
0e, heating parts 60a to 60e communicating with the expansion spaces A of the respective piston cylinders 30a to 30e, and each of the heating parts 6
Between 0a and 60e, a combustion flame C
In a Stirling engine equipped with a combustor 100 that heats by heating, a guide plate is provided outside each of the heating sections 60a to 60e to guide the combustion flame C of the combustor 100 to the outer periphery of the eight heating sections 60a to 60e. 120 is provided.

(Function) According to the present invention, since a guide plate is provided outside each heating section to guide the combustion flame of the combustion machine to the outer periphery of each ship heating section, the combustion flame of the combustion machine is guided by the guide plate. is guided to the outer circumferential surface of the heating section, and the heating section can be effectively heated.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 shows an engine main body 20, which includes five piston cylinders 308 to 30e of the same shape, a cooling section 40c, and a regenerating section. Part 50
Five identical heat exchangers 70a to 700 (heat exchangers 70a, 70b, 70d
, 70e are not shown. )
, the piston cylinders 30a to 30e, and the heat exchanger 7
It is provided with pedestals 80a to 80d arranged in four upper and lower stages for supporting and fixing Qa to 70e.

The cylinder 30a is made up of a cylinder body 31a and a cylinder cap 32a, and a movable piston 33a is accommodated inside these, and an inert gas in the heating/cooling range, such as N2 or He5H2, is sealed in the upper part. A space A and a compressed space B are formed in the lower part.

Incidentally, the cylinders 30b to 30e are similarly constructed, and as shown in FIG. 2, the cylinders 30a to 30e are arranged in concentric contact with the pedestals 80a to 80d.

The heat exchanger 70c is provided with a cooling section 40C1, a regeneration section 50c, and a heating section 60c in order from the bottom. Further, the regeneration unit 50c and the cooling unit 40G are provided above and below within the cylinder 45c, and the cooling unit 40c is provided with a vertically elongated cold water container 41G inside, and a cold water supply pipe 42C and a cold water discharge pipe 42C are disposed inside the cooling unit 40c. Cold water is circulated through the pipe 43c, and a cold air circulation section 44G is provided outside the pipe 43c. The regeneration section 50c is formed by laminating a plurality of porous materials such as wire mesh, and stores and releases circulating air and body heat.

As shown in FIG. 3, the heating section 60C consists of an outer cylinder 61c and an inner cylinder 62c, each having an open bottom end, and a plurality of heat-absorbing fins 63C are provided on the outer peripheral surface of the outer cylinder 61c.
A part of the upper end is connected to a connecting pipe 90 that communicates with the expansion space A in the cylinder cap 32c, and a lower end stands up on the pedestal 80a and communicates with the regeneration section 50c.

Further, the inner cylinder 62c is disposed within the outer cylinder 61c with a predetermined gap, and the upper end of the outer cylinder 61c is opened to form a hot air circulation part 64G through which the working gas flows. The other heat exchangers 70a, 70b, 70d, and 70e are configured similarly to the heat exchanger 70C, and the heat exchangers 70a to 70e are connected to the adjacent cylinders 30a to 70e, as shown in FIG. The cylinder 30e is disposed near the outside of the cylinder 30e and equidistant from each of the cylinders 30a to 30e.

Reference numeral 100 designates a known combustion machine, which is attached to a mounting plate 113 (described later) and disposed above between the cylinder caps 328 to 32e.
e1 The connecting vibrator 90 and the heating parts 60a to 60e are heated.

Reference numerals 110 and 111 denote support plates, which are erected in a cylindrical shape on the periphery of the pedestal 80a, as shown in FIGS.
2 is formed. Reference numeral 113 denotes a mounting plate to which the combustor 100 is attached, and is disposed on the upper ends of the support plates 110 and 111.

120 is the support plate 111 and the cylinder cap 32;
It is a guide plate formed between the heating parts 60a to 60e and the cylinder caps 328 to 32e. &2e, and is arranged at a predetermined gap from the portion on the support plate 111 side so as to cover these. The inclined portion 122 is connected to the vertical portion 12.
1 extends diagonally upward toward the combustor 100, and the upper end is connected to the mounting plate 113 near the combustor 100.

In the present invention, as described above, the guide plate 120 is formed to cover the outer circumferential surfaces of the cylinder caps 32a to 32e and the outer circumferential surfaces of the outer cylinders 61a to 61c of the heating parts 6a to 60e with a predetermined gap. , the combustion flame C of the combustor 100 is transmitted to the expansion space A1 of the cylinders 308 to 30e and the heating section 60.
The working gas in the hot air circulation section 64c is heated through the outer cylinder 61C of the cylinder C. Similarly, the heating parts 60a, 6
The working gas flowing through the hot air flow sections 0b, 60d, and 60e (not shown) is also heated. In addition, the heating parts 6Qa to 60e
Needless to say, the combustion flame C also flows through the inner cylinders 62a to 62e of the cylinder 62a to 62e, heating the working gas.

(Effects of the Invention) As explained above, the present invention includes a plurality of piston cylinders housing movable pistons, a heating section communicating with the expansion space of each piston cylinder, and a combustion chamber between the heating sections. In a Stirling engine equipped with a combustor heated by flame, a guide plate is provided outside each heating section to guide the combustion flame of the combustor to the outer periphery of the eight heating sections, so that the combustion flame of the combustor is is guided to the outer circumferential surface of the heating section by a guide plate, and has the advantage that the heating section can be effectively heated, heat loss is reduced, and a Stirling engine with good operating efficiency is provided.

[Brief explanation of drawings]

The drawings serve to explain the present invention, and FIGS. 1 to 3 show a Stirling engine according to the present invention, FIG. 1 is a sectional view showing the engine body, and FIG. 2 is a view from above. 3 is a sectional view taken along line 1-Ill in FIG. 2, and FIG. 4 is a partially cutaway sectional view showing a conventional Stirling engine. In the figure, 30a to 30e... piston cylinder, 33a
...Movable piston, 60a-60e...Heating part, 1
00... Combustion machine, 120... Guide plate, A... Expansion space, C... Combustion flame.

Claims (1)

[Claims] A Stirling engine comprising a plurality of piston cylinders housing movable pistons, a heating part communicating with the expansion space of each piston cylinder, and a combustor between each heating part that heats the heating part with combustion flame, A Stirling engine, characterized in that a guide plate is provided outside each of the heating sections to guide the combustion flame of the combustor to the outer periphery of each of the heating sections.