JPH11107856A - Single stage and multistage expansion stirling engine expander and stirling cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive an increment of specific power and nonpressure promotion by injecting saturated steam into an operating space of a cold side piston in the vicinity where all the operating space becomes minimized, and in the vicinity where the all operating space becomes maximized and at the process scheduled henceforth, emitting internal operating gas and steam from the operating space of the cold side piston. SOLUTION: An alpha type Stirling engine by V-shaped two cylinders is equipped with a hot cylinder 1, a cold cylinder 2, a hot side piston 3, a cold side piston 4, a regenerative heat exchanger 5, and an operating gas heater 6 respectively, and in this case, a steam filling port 12 is formed in the upper part of a cold side piston operating space 11. In addition, a lot of exhaust ports 13 and 14 are installed in a side face of the cold cylinder 2. Then, feedwater of a feed water tank 18 is fed to a process coil 21 and steam is generated, then this steam is fed to an injecting steam valve 28 by way of a steam separator 26. Furthermore, at an air suction injector 30, atmospheric air is inhaled and mixed by way of a check valve 32, and this air-fuel mixture is taken into the cold side piston operating space 11 from the steam filling port 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Stirling engine capable of utilizing various heat sources and natural energy sources, and more particularly, to the use of steam and compressed air generated by these various heat sources and natural energy sources, and to the field of Stirling engines. The present invention relates to a single-stage or multi-stage Stirling engine expander that can be expanded, and a non-Fron cooler using the Stirling engine.

[0002]

2. Description of the Related Art A Stirling engine is already known as an engine which is operated by expansion and contraction of a working gas which is externally heated and cooled in one of a plurality of interlocking expansion chambers to continuously extract mechanical power. . Examples of the Stirling engine include a V-shaped two-cylinder alpha-type, beta-type, and gamma-type, all of which have a low or high temperature power piston working space and a working gas heater and a heat regenerator. Is the number 10
Higher than atmospheric pressure.

[0003]

Since a conventional Stirling engine or a Stirling cooler using a Stirling engine uses high-pressure helium or hydrogen as a working fluid for high output, the entire engine is heavy, complicated and expensive. And the specific output is small. Also, helium itself is expensive and difficult to obtain, and hydrogen is a dangerous substance. Therefore, the use has to be limited to special uses such as space use and solar use.

In the conventional single-stage expansion Stirling engine expander, the expansion space of the piston is limited to the range of the piston working space of the conventional Stirling engine, so that steam or the like having a high pressure ratio is injected, and When the amount of released steam is reduced, there is a risk of incomplete expansion of the steam, and therefore the thermal efficiency is insufficient. Also, it was not suitable for configuring as a multi-cylinder.

In view of the above-mentioned conventional problems, the present invention does not require the use of expensive and difficult to obtain conventional helium or dangerous hydrogen, and can easily obtain high-pressure saturated or wet steam and gas such as compressed air. It is an object of the present invention to provide a Stirling engine, a Stirling cooler, and a Stirling engine expander in which specific power is increased, lightened, and pressure-resistant is reduced by injecting and expanding and discharging a working gas.

[0006]

According to the present invention, in a Stirling engine in which a power piston space having an arbitrary working gas heater and a heat regenerator has a low-temperature portion or a high-temperature portion, an external space is provided inside the working space of the low-temperature side piston. Inject any gas or steam such as saturated steam and / or air through the injection hole in the vicinity of the minimum of the entire working space through the injection hole, and in the vicinity of the maximum of the working space and in the subsequent steps, A Stirling engine is provided which discharges internal working gas or steam from a working space to the outside.

Further, according to the present invention, in a Stirling engine expander utilizing a Stirling engine as a gas expander such as steam or air, both or at least one of the high and low temperature pistons is used as a return piston, and each of the return pistons is used. A Stirling engine expander is provided in which the working space behind the seed working surface is the last stage expansion space of gas.

Further, according to the present invention, in a Stirling engine expander utilizing a Stirling engine as a gas expander for steam, air, etc., all of the directions of movement of a plurality of cylinders and pistons are parallel to each other around a center line. A single-stage or multi-cylinder barrel-like arrangement in which each piston is reciprocated by an inclined plate or a slanted arm having a Z-shaped rotation axis on the center line A multi-stage expansion Stirling engine expander is provided.

[0009]

In the present invention, gas such as high-pressure saturated or wet steam and compressed air, which are easily available, is injected into the piston working space instead of expensive helium for any type of Stirling engine and discharged to the outside. Thus, the Stirling engine is first configured as a single-stage expansion expander. At this time, the average effective pressure is close to 60% of the injection pressure of the injected steam or air, and the average effective pressure of the operation of a conventional Stirling engine that operates using the injection pressure as the average filling pressure is 20% of that. However, the specific power is increased by about three times that of the following. Also, the conventional high-pressure helium or hydrogen-based Stirling engine crankcase had to be of an extremely high pressure-resistant type, but in the case of the present invention, the crankcase may be of a low-pressure type, so that it is lighter and less expensive. . Further, in the present invention, by using a cooler without heating the heater, the heater can be configured as a lightweight cooler as it is.

[0010] In the multistage expansion Stirling engine expander according to the present invention when the Stirling engine is used as a gas expander such as steam or air, the space behind the piston left in the conventional single-stage Stirling engine expander is used. Therefore, even if the vapor release pressure is increased, once the released vapor is released to the backside space, expansion work is performed for a while there, and then it is released outside, so that the work efficiency can be increased by multistage expansion. it can.

To combine these single-stage or multi-stage expansion Stirling engine expanders to form a large-output multi-cylinder, it is a parallel-arranged barrel-shaped multi-cylinder engine, and an axial Z-shaft is provided at the center. In addition, a rotary valve is placed on the center line, and all the pistons and the rotary valve are driven by the rotating shaft, whereby a multi-cylinder Stirling expander having a compact structure as a whole can be realized.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a V-shaped two-cylinder alpha-type Stirling engine according to an embodiment of the present invention. 1 is a high temperature cylinder, 2 is a low temperature cylinder, 3 is a high temperature side piston, 4 is a low temperature side piston, 5 is a regenerative heat exchanger, 6 is a working gas heater, and both pistons 3 and 4 rotate in the direction of arrow 7. The crank pins 8 of the two main crank members are connected to the two connecting rods 9 and 10 to reciprocate. These configurations are the same as those of a conventional typical alpha-type Stirling engine.

For this conventional Stirling engine,
In the present invention, the steam inlet 12 is formed above the low-temperature side piston working space 11. On the side surface of the low-temperature cylinder 2, a number of exhaust holes 13 and 14 are opened below, and when the low-temperature side piston 4 comes near its bottom dead center, it communicates with the outside, and the internal gas is substantially at atmospheric pressure. Or to some intermediate pressure.

Reference numeral 15 denotes a water supply pump cylinder, 16 denotes a water supply pump piston, and 17 denotes a connecting rod connected to the main crank 8. Reference numeral 18 denotes a water supply tank, in which water 19 is supplied to a heating tube coil 21 of a single-tube once-through boiler via a water supply pipe 20. 22 and 23 are check valves. 24 is a boiler burner and 25 is a boiler flue. Reference numeral 26 denotes a steam separator, which separates steam from boiler water. 27 is a steam pipe, and 28 is a steam valve for injection.
The lower end of the valve rod 29 of the steam valve 28 is pushed up by the high temperature side piston 3 near its top dead center to open.

Numeral 30 denotes an air suction injector, in which the high pressure steam from the steam nozzle 31 sucks and mixes the atmosphere through a check valve 32, and a mixture of the steam and air is injected into the inlet 12
From the piston working space 11 on the low temperature side. 33
Is a burner for heating the working gas heater 6 of the Stirling engine, and 34 is a flue of the combustion gas. Reference numeral 35 denotes a blowing pipe for blowing the exhaust gas into the water supply 19 for preheating. Reference numeral 80 denotes a cooling fin of the low-temperature cylinder 2.

FIG. 2 is a valve diagram of the embodiment of FIG. O
A indicates the top dead center direction of the high temperature cylinder 1 shown in FIG. 1, and OB indicates the top dead center direction of the low temperature cylinder 2. OA 'and OB' are the directions of the bottom dead center of the high and low temperature cylinders, respectively. The maximum Vmax of the combined space V of both cylinder spaces is the central OD,
The minimum Vmin is in the direction of OC. Now crankpin 8
Is rotated in the direction of arrow 7, the valve rod 29 of FIG. 1 is pushed across the top dead center of the high-temperature cylinder in the OA direction, and the steam valve 28 is pressed.
Is opened, the interval between EF becomes a gas injection period such as steam, and further, after the crank rotates, the exhaust holes 13, 14 and the like on the side wall are opened near the bottom dead center of the low-temperature cylinder in the OB direction.
The interval between GH is an exhaust emission period. This injection and discharge is very similar to the operation of a conventional single-cylinder steam expander (steam engine), which alone turns the engine.

FIG. 3 is a P-V diagram in the embodiment according to FIGS. First, between the GHs near the bottom dead center Vmax of the synthesis space, the gas inside the cylinder is released to the atmospheric pressure Pa from the exhaust hole.
Works with QH. Next, the pressure rises to a point EF because the steam injection valve 28 opens before the top dead center E of the synthesis space through a pressure increase HE caused by a slight adiabatic compression section after the exhaust hole is closed. F is very close to the boiler outlet pressure Pb.

Next, the internal gas passes through the regenerative heat exchanger 5 in the same manner as in the conventional Stirling engine due to the movement of both pistons, so that it becomes higher in temperature and pressure, and then undergoes isothermal expansion while being heated by the gas heater 6. The figure theoretically has an elliptical shape like a conventional Stirling engine, and a shape bulging upward with FCIG. This upward swelling is a Stirling engine effect by the regenerative heat exchanger 5 and the gas heater 6.

As described above, the entire pressure diagram is GDHEF.
It has a large area like CIG. If there is no injection and release of working gas, the pressure diagram of the internal gas alone will be the same pressure diagram as the conventional Stirling engine, and will be a diagram of a considerably smaller area as shown by the ellipse FCIGDJ in FIG. In the case of a simple non-Stirling engine non-heated steam engine, Rankine cycle F
KLHE. In each case, the area is small. As is apparent from FIG. 3, the output increasing effect of the present invention is remarkable.

FIG. 4 shows an embodiment in which the present invention is applied to a beta-type Stirling engine on a solid fuel grate.
In FIG. 4, the same parts as those in the embodiment of FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted as much as possible. In this embodiment, a beta-type Stirling engine expander that is upside down is shown, so that a power piston 36 and a displacer piston 37 are arranged in a skewered shape.
With the shaped crank member 38, both pistons make a movement with a phase difference of about 90 °. Here, reference numeral 5 denotes a cylindrical regenerative heat exchanger, and reference numeral 6 denotes a downward disk type working gas heater. In this embodiment, a once-through steam generator 40 for steam injection is simultaneously and integrally heated by the same solid fuel in the upper central portion of the furnace 39.

The structure and operation of the other parts of the embodiment of FIG. 4 are substantially the same as those of the embodiment of FIG. However, the piston type valve element 41 of the steam injection valve 28 is driven by a crank pin 42 that rotates synchronously adjacent to the main crank. 43 is an electric water pump. The steam injection is performed by the displacer piston 37.
The steam valve and its piston-type valve element 41 are adjusted so as to be performed near its top dead center, which is below, and the exhaust holes 13, 14 are opened near its bottom dead center, where the power piston 36 is above. Reference numeral 44 denotes a water injection pipe,
After the water from the outlet 3 passes through the water injection pipe 44 and the valve 45, the water is blown into the injected steam to adjust the wetness of the injected steam.
The operation and effect of this embodiment are similar to those of the embodiment of FIG.
Detailed description is omitted. In FIG. 4, a liquid fuel or a gas fuel other than a solid fuel is used, or a mixture thereof can be burned. Alternatively, solar dish heating may be used.

FIG. 5 is a schematic diagram showing an embodiment of a power generation facility when the present invention is applied to simultaneous use of various heat sources. 46
Is a Stirling engine expander according to the present invention, and 47 is its generator. Reference numeral 48 denotes a burner that uses a high-grade fuel such as light oil or gas.
After heating its own combustion air in the above, the air is discharged from the chimney 51. 52 is a combustion air blower.

On the other hand, 53 is an alternative fuel such as biomass, refuse, industrial waste, and coal, and 54 is its incinerator. The boiler 55 in the combustion furnace is heated by the heat of combustion of the incinerator 54 to generate saturated steam.
Send to 58 is an auxiliary high-grade fuel burner for ignition and for when alternative fuel is insufficient. Reference numeral 59 denotes a stationary or tracking type medium temperature solar steam generator which generates saturated steam having the same pressure as that of the boiler 55 during sunshine and sends it to the steam separator 57.

The saturated steam from the steam separator 57 is injected into the Stirling engine expander 46 via the steam pipe 60 and the control valve 61 by the steam injection valve 62. Reference numeral 63 denotes an expander exhaust pipe, which is connected to and sucked by a direct contact injector type condenser 65 which jets cooling water sent from a cooling water pump 64. 66 is a water supply tank, 67 is a water supply pump, and 68 is a fuel pump for high-grade fuel.

The embodiment of FIG. 5 shows that the Stirling engine expander according to the present invention can be used in combination with various heat sources. That is, as a heating fuel of the gas heater 49 for the Stirling engine, a high temperature is achieved by using a high-grade fuel such as light oil or gas, or a high-concentration high-temperature solar heater, but the saturated steam sent to the steam injection valve 62 is Biomass, garbage, coal, industrial waste, and the like. Incinerator boiler 55 for incineration of incinerator and relatively low temperature such as stationary temperature solar steam generator 59, etc. When the supply is insufficient, the auxiliary high-grade fuel burner 58 is used as an auxiliary, and any combination of high-grade, alternative, and natural energy may be used. The injected steam is saturated steam or slightly wet steam.

FIG. 6 is a schematic view showing an embodiment in which the Stirling engine expander of the present invention is used as it is as a Stirling engine cooler. This embodiment has a main body having the shape of an alpha-type Stirling engine similar to that of FIG. 1, and members denoted by reference numerals 1 to 14 are the same as those in FIG. 1. However, in this case, since the heater 6 is not heated in the same rotation direction, the two cylinders 1 and 2 become Stirling coolers, the temperature of the cylinder 1 becomes low, and serves as a cooler, and the heater 6 supplies cold heat to the outside.

In the embodiment shown in FIG. 6, reference numeral 69 denotes a tank of a working gas such as helium in the case of air or a closed system, and the gas is sent out by a pump 71 operated by a motor (M ₂ ) 70 and is operated at room temperature. After being cooled to room temperature by the cooler 72, the rotary valve 73 is connected to the main crank member by a belt and rotates synchronously. In the vicinity of the point, the exhaust pipe 7
4 and return to the tank 69. The operation of these pumps and valves is exactly the same as that of FIG. 1, and the crank member continues to rotate while generating power by its operation, and the heater 6 is not heated.

The power generated by the crank member reaches a generator (M ₁ ) 76 via a power shaft 75, and the generated power is sent to the motor 70 and used to reduce the driving power. This embodiment shows that the Stirling engine expander according to the present invention can be used as it is for a cooler.

In FIG. 6, reference numeral 77 denotes a windmill, which directly drives a compressor 78 by wind power to supply the compressed air to a pipe 7.
It is sent to the Stirling engine expander via 9 and the valve 73. When using the windmill 77, the use of the motor (M ₂ ) 70 may be reduced in some cases. In this case, the discharge valve 80 provided in the exhaust pipe 74 is opened to measure a decrease in exhaust pressure. This embodiment shows that the Stirling expander and the Stirling cooler of the present invention can be formed by using an air compressor driven by mechanical natural energy such as wind power, water power, and wave power as an injection air source.

FIG. 7 is a schematic view of a multi-stage expansion Stirling engine expander according to an embodiment of the present invention, which is based on an alpha-type Stirling engine. 81 and 82 are low and high temperature side pistons respectively, A is a low temperature working space,
B is a high-temperature working space, and both pistons 81 and 82
It is driven up and down by two crank members 83 and 84 that rotate at a constant speed in the direction of arrow 7 with a phase difference of about 60 ° to 90 °. 85 is a regenerative heat exchanger and 86 is a gas heater. The two pistons 81 and 82 and both spaces A and B form an alpha-type Stirling engine expander serving as a base.

In the embodiment shown in FIG. 7, the low-temperature side and high-temperature side pistons 81 and 82 are used as return pistons, and the back space C of the low-temperature operation space A and the back space D of the high-temperature operation space B are provided on the back side. Are formed, and an expansion piston 88 is formed by another synchronous crank member 87 as shown in the figure.
Is provided with an expansion cylinder 89 having a piston working space E, and these three spaces C, D, and E are connected to a connecting pipe 9.
0 and 91 to form a common expansion space.

Since the present embodiment is a Stirling engine expander, only a high-pressure saturated steam of about 5 to 10 atm or a mixed gas or air containing some wet steam or some air enters from the supply pipe 92 from the outside. The injection solenoid valve 93 injects the low-temperature piston 81 into the low-temperature operating space A near the top dead center. Next, in the vicinity of the bottom dead center of the piston 81, the intermediate discharge solenoid valve 9 is disposed.
4 is opened temporarily to release a part of the steam in the space A and the space B to the expansion spaces C, D, and E which are at a low pressure at that time. The solenoid valve 94 is closed, and the spaces A and B repeat the cycle of the Stirling engine expander.

On the other hand, the steam that has entered the spaces C, D, and E temporarily expands in all of the spaces, and then the final discharge solenoid valve 95 is opened for about half a cycle near the maximum of the total space volume. To discharge the internal steam and the like to the exhaust turbine 96 or a condenser or the atmosphere.

The period during which the injection solenoid valve 93 is open is in the range indicated by F in the rotation range of the crank member 83, and the period during which the intermediate discharge electromagnetic valve 94 is open is also G in the diagram. Range. Next, the opening section of the final discharge solenoid valve 95 is in the upward movement of the expansion piston 88 and the crank member 8.
7 is the range indicated by H.

FIG. 8 is a P-V diagram in the embodiment of FIG. Similar to FIG. 3 above, the upper closed curve of the IJKLM is a PV diagram showing the sum of the effective working spaces of the spaces A and B, wherein the discharge is between LM, the injection is between IJ, and the Stirling engine cycle is between JKL. The part which is a part of is shown.
N is a cutoff point of the intermediate discharge solenoid valve 94. On the other hand, the lower MNOPQ is a P-V diagram showing the sum of the effective working spaces of the expansion spaces C, D, and E, which are drawn left-right reversed for easy understanding. Is shown. When combined, the PV diagram is much larger than the elliptical JKLR, which is simply a Stirling engine cycle, indicating that it is excellent as a steam expander.

FIG. 9 shows a multi-cylinder barrel type of the present invention.
Also, a case where an exhaust turbine expander is added is shown. In the figure, A, B, C, D and A ', B', C ', D'
1 is a space that operates in the same manner as A, B, C, and D in FIG. 1, A and A 'are high-temperature operation spaces, B and B' are low-temperature operation spaces, and C and C 'are A and A, respectively. ', The back space, D, D'
Each is the back space of B and B ', A, B and A
'And B' are paired to form one alpha-type Stirling engine. The upper gas heaters 97 and 98 are externally heated.

In this embodiment, four cylinders 101 to 104
Are arranged in a parallel barrel shape, and the respective pistons are vertically reciprocated by arms 109 and 110 of an inclined arm 108 fitted to a Z-axis portion 107 provided on the lower vertical rotation shafts 105 and 106. You. 111, 112, 113
Are rotary valves which are respectively rotated by the vertical rotation shafts.
B ′ alternately and inject them into spaces C, D, C ′,
D ′, and finally release by them to release tube 115
After entering the more exhaust steam turbine 116 and rotating it, this steam enters the condenser 117. The operation sequence of these valves and the PV diagrams of each space are substantially the same as those in FIGS.

[0038]

As described above, according to the present invention, particularly in the case of the Stirling engine expander of the present invention,
As shown in the example of FIG. 3, the area of the P to V diagram of the cycle is larger than that of an expander such as a simple Stirling engine or a simple steam engine, so that the conventional Stirling having a specific output of the same average pressure is obtained. It is much larger than engines and steam engines.

Although the conventional Stirling engine had to increase its internal pressure to several tens of atmospheres or more, the Stirling engine expander according to the present invention has the same large output even at the maximum pressure of about 10 atmospheres or less. can get.
Therefore, the structure of the cylinder portion and the crankcase portion is particularly simplified, and a low-weight, low-cost Stirling engine expander can be realized.

The gas temperature in the high temperature section of the Stirling engine expander of the present invention is significantly higher than that of a conventional steam engine due to the regeneration of heat by the regenerative heat exchanger and the presence of the heaters 6 and 49. As a result of the change, the overall overall thermal efficiency is much higher than a conventional non-Stirling low pressure non-superheated saturated steam engine.

Further, according to the present invention, in the case of the embodiment shown in FIG. 1, air is slightly mixed into the injected steam and injected, so that the amount of injected steam is reduced by the amount of the air to generate steam. , The latent heat of steam required for the heat treatment can be reduced, so that the overall thermal efficiency can be further improved.

Further, the expander according to the present invention does not need to use expensive helium or dangerous hydrogen gas as a working gas as in a conventional high-power Stirling engine, and uses natural materials such as steam and air which are very easily available. So you can
In this respect, it is economical and good for the environment.

Further, as shown in the embodiment of FIG. 5, the power generation equipment for simultaneous use of various heat sources by the Stirling engine expander according to the present invention comprises a high temperature fuel used for high temperature heating (500 to 700 ° C.) of the gas heater section of the Stirling engine. Generation of saturated or wet steam for steam injection (120-1
(50 ° C.) can be separated from the low-temperature fuel or heat source used, so that the use of two free heat sources is possible. This shows that an air preheater can be installed for fuels such as petroleum to reduce the consumption as much as possible, and that alternative fuels such as solar, biomass, garbage, and industrial waste can be used for generating saturated steam. And will be well suited to future energy situations.

When the same grate is used as in the embodiment of FIG. 4, the entire heat can be used for the solid fuel alone without attaching an air preheater. Further, as in the embodiment of FIG. 6, the Stirling engine expander of the present invention can be used in principle as it is as a cooler. Turning in that direction also brings great utility value.

Also, as in the embodiment of FIG. 6, the Stirling expander according to the present invention can use compressed air from an air compressor driven by mechanical natural energy such as wind power, water power, and wave power as its injection gas. This also fits well with future energy situations.

In the embodiment shown in FIGS. 7 to 9, it is possible to increase the output and the thermal efficiency by completely expanding the steam particularly when the high-pressure saturated steam is injected. When the output is large, there is an effect that the whole can be made extremely compact by arranging the cylinder arrangement as a barrel type and disposing the rotary valve at the center.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an alpha-type Stirling engine expander having two V-shaped cylinders according to an embodiment of the present invention.

FIG. 2 is a valve diagram in the embodiment shown in FIG.

FIG. 3 is a P-V diagram showing a relationship between a volume (V) and a pressure (P) of a combined cylinder space in the embodiment shown in FIG.

FIG. 4 is a schematic longitudinal sectional view of a beta-type Stirling engine expander installed on a solid fuel grate according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of a power generation facility using multiple heat sources simultaneously according to another embodiment of the present invention.

FIG. 6 is a schematic view showing a Stirling cooler of a Stirling engine expander type according to another embodiment of the present invention, together with an example of using a combination of wind power and the like.

FIG. 7 is a longitudinal sectional view of a multistage Stirling engine expander according to another embodiment of the present invention.

FIG. 8 is a P-V diagram in the embodiment shown in FIG. 7;

FIG. 9 is a partially cutaway perspective view of a multi-cylinder barrel Stirling engine expander according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature cylinder 2 Low temperature cylinder 3 High temperature side piston 4 Low temperature side piston 5 Regenerative heat exchanger 6 Working gas heater 9, 10, 17 Connecting rod 11 Low temperature side piston working space 12 Steam inlet 13, 14 Exhaust hole 15 Water supply pump cylinder 16 Water supply pump piston 18 Water supply tank 20 Water supply pipe 21 Heating pipe coil 24 Boiler burner 26 Steam-water separator 27 Steam pipe 28 Injection steam valve 30 Air suction injector 32 Check valve 35 Blow pipe

Claims (10)

[Claims] In a Stirling engine in which a power piston space having an arbitrary working gas heater and a heat regenerator has a low-temperature portion or a high-temperature portion, a saturated steam and / or air or the like is externally introduced into the operating space of the low-temperature side piston. Gas or steam is injected through the injection hole in the vicinity of the minimum of the entire working space, and in the vicinity of the maximum of the working space and in the subsequent process, the internal working gas and steam are discharged from the low-temperature side piston working space to the outside. Stirling engine characterized in that it emits 2. A steam from a high-pressure steam generator is injected into the low-temperature piston working space through an air suction injector so that a mixture of steam and some air is injected into the working space. The Stirling engine according to claim 1, wherein: 3. The steam generator according to claim 1, wherein steam from a steam generator of any type, such as through-flow utilizing a heat source of a gas heater of the Stirling engine, is injected into the working space. Stirling engine described in. 4. A fossil fuel, a high-temperature condensed solar heat or another high-temperature heat source as a heat source of a gas heater of a Stirling engine, and an optional industrial waste heat or refuse incineration which is another heat source as a heat source of a steam generator for injection steam. 2. The method according to claim 1, wherein a medium-to-low-temperature heat source such as furnace heat, medium-to-low-temperature concentrating solar heat, and geothermal heat is used, and an air compressor using wind power, water power, wave power, or the like is used as the injected steam source. A Stirling engine according to any one of Items 3 to 3. 5. A steam generator according to claim 1, wherein steam generated from an arbitrary steam generator is once expanded by a steam utilizing air compressor to produce compressed air and injected into a working space. A Stirling engine according to item 4. 6. A power piston space having an arbitrary working gas heater and a heat regenerator is a low-temperature portion or a high-temperature portion, and a saturated steam and / or
Alternatively, any gas or vapor such as air is injected through the injection hole in the vicinity of the minimum of the entire working space, and in the vicinity where the total working space is the maximum and in the subsequent steps from the low-temperature side piston working space to the outside. In a Stirling cooler that uses a Stirling engine that discharges internal working gas and steam, an arbitrary gas such as helium and air is injected, discharged, and rotated from the outside, and heating of the heater is stopped to generate the heater. A Stirling cooler characterized in that a low temperature is used as an external cooling heat source. 7. A Stirling engine expander that uses a Stirling engine as a gas expander such as steam or air, wherein both or at least one of the high and low temperature pistons is a return piston, and a main operating surface of each of the return pistons. A multistage inflation Stirling engine expander, characterized in that the working space on the back side of the multistage inflation stage is the last stage expansion space for gas. 8. In the case of a beta type or a gamma type Stirling engine type in which a power piston working space has a low temperature section or a high temperature section, each power piston is a return piston, and the back side of the main operation surface of each return piston. 8. The multi-stage expansion Stirling engine expander according to claim 7, wherein another expansion cylinder and a piston are connected to the working space of (1) to form a final expansion space for gas. 9. The Stirling engine expander according to claim 8, wherein an expander such as an exhaust turbine is further provided in the last stage working space. 10. A Stirling engine expander using a Stirling engine as a gas expander for steam, air, etc., wherein a plurality of cylinders and pistons are arranged in a ring around a center line with all directions of movement being parallel. A multi-cylinder single-stage or multi-stage expansion Stirling engine extract with a barrel arrangement in which a rotary valve is placed on the center line and each piston is reciprocated by an inclined plate or an oblique arm having a Z-shaped rotation axis on the center line. Panda.