JP5804555B2 - Steam engine - Google Patents

Description

  The present invention relates to a steam engine capable of obtaining power using waste heat or the like.

  Conventionally, an internal combustion engine which is one of power sources has been widely used in various fields.

  Particularly in recent years, various means for improving fuel efficiency have been proposed for the purpose of environmental consideration and fuel saving.

  For example, an engine that improves fuel consumption by improving the combustion of fuel in a cylinder has been proposed (see, for example, Patent Document 1).

JP 2000-034925 A

  Various improvements have been made so far to improve the fuel efficiency of the engine. However, further means for improving the fuel efficiency are required.

  On the other hand, there is still room for studying the heat generated by combustion.

  This invention is made | formed in view of such a situation, Comprising: The steam engine which can obtain motive power using a thermal energy is provided.

In order to solve the above-described conventional problems, the steam engine according to the present invention is provided in the first flow path and the second flow path for flowing the branched high-temperature fluid, and the first flow path. A working fluid heating chamber in which heat is exchanged between the high-temperature fluid flowing in the first flow path and the working fluid to use the working fluid as a superheated liquid, and a motor body disposed in the second flow path And the motor main body includes a flash space facing a heat transfer surface heated by heat of a high-temperature fluid flowing in the second flow path, and a high heat flowing in the first flow path. A part of superheated liquid is vaporized and expanded in the flash space, which is at a low pressure even in the working fluid heating chamber by a fluid, to generate a flashwork and activate the motor main body, and droplets that are not vaporized The remaining superheated liquid collides with the heat transfer surface part to An injector for triggering the mover main body portion as vapor inflated by boiling workpiece boiled, was to have.

Further, the wet saturated steam generated in the flash space is discharged to the outside and is made into the working fluid liquefied through a liquefaction device, and the liquefied working fluid is heat exchanged in the working fluid heating chamber by a pressure pump. It is also characterized in that the superheated liquid is in a high pressure and high temperature state through a vessel and is ejected through the injector into the flash space.

In addition, the engine main body portion is configured such that the piston is slidably disposed in the cylinder, the crankshaft is interlocked with the piston, and the rotational movement of the crankshaft is interlocked with the reciprocating sliding of the piston. The cylinder is disposed in the second flow path so as to receive heat of the high-temperature fluid, and the cylinder and a piston that reciprocates within the cylinder serve as the heat transfer surface portion having a heat exchange function, and the cylinder The flash work and the boiling work are generated by ejecting the superheated liquid in a high pressure and high temperature state through the injector into the flash space closed by the piston near the top dead center, and the piston is activated. It also has a feature.

Further, the motor main body portion is configured such that a rotor is rotatably disposed in a rotor housing, an eccentric shaft is inserted into the rotor, and the rotational motion of the eccentric shaft is interlocked with the rotational motion of the rotor, The rotor housing is disposed in a second flow path so as to be able to receive the heat of the high-temperature fluid, and the rotor housing and the rotor that rotates in the rotor housing serve as the heat transfer surface portion having a heat exchange function, Injecting the superheated liquid in a high-pressure and high-temperature state through the injector into the flash space closed by the rotor housing and the rotor, causing the flashwork and the boiling work to occur, and activating the rotor Also has features.

According to the present invention, the first flow path and the second flow path for flowing the branched hot fluid, and the operation with the high heat fluid provided in the first flow path and flowing in the first flow path. A working fluid heating chamber for exchanging heat with the fluid and using the working fluid as a superheated liquid, and a motor main body disposed in the second flow path, wherein the motor main body is The flash space facing the heat transfer surface heated by the heat of the hot fluid flowing in the second flow path, and the working fluid heating chamber at a low pressure by the hot heat fluid flowing in the first flow path. In the flash space, a part of the superheated liquid is vaporized and expanded to generate a flashwork and activate the engine main body, and the remaining superheated liquid droplet that does not vaporize collides with the heat transfer surface. Steam that has been boiled by the heat exchange function and expanded by the boiler work The mover due to a have an injector which trigger the body portion, it is possible to provide a steam engine that utilizes thermal energy to enable you to obtain power as.

Further, the wet saturated steam generated in the flash space is discharged to the outside and is made into the working fluid liquefied through a liquefaction device, and the liquefied working fluid is heat exchanged in the working fluid heating chamber by a pressure pump. Since the superheated liquid is in a high-pressure and high-temperature state through the container and is ejected through the injector into the flash space, the working fluid can be circulated and used.

In addition, the engine main body portion is configured such that the piston is slidably disposed in the cylinder, the crankshaft is interlocked with the piston, and the rotational movement of the crankshaft is interlocked with the reciprocating sliding of the piston. The cylinder is disposed in the second flow path so as to be able to receive the heat of the high-temperature fluid, and the cylinder and a piston that reciprocates in the cylinder are used as the heat transfer surface portion having a heat exchange function, The flash work and the boiling work are generated by ejecting the superheated liquid in a high pressure and high temperature state through the injector into the flash space closed by the cylinder and the piston near the top dead center. Because it was activated, it is possible to provide a piston-type steam engine that can obtain power using thermal energy. The

Further, the motor main body portion is configured such that a rotor is rotatably disposed in a rotor housing, an eccentric shaft is inserted into the rotor, and the rotational motion of the eccentric shaft is interlocked with the rotational motion of the rotor, The rotor housing is disposed in a second flow path so as to be able to receive the heat of the high-temperature fluid, and the rotor housing and the rotor that rotates in the rotor housing serve as the heat transfer surface portion having a heat exchange function, Injecting the superheated liquid in a high-pressure and high-temperature state through the injector into the flash space closed by the rotor housing and the rotor to cause the flashwork and the boiling work to be activated, thereby activating the rotor; So, use heat energy to get power It can provide a Wankel rotary steam engine.

It is the conceptual diagram which showed the structure of the piston steam engine which concerns on 1st Embodiment. It is explanatory drawing which showed the motion of the piston steam engine which concerns on 2nd Embodiment. It is explanatory drawing which showed the motion of the Wankel type rotary steam engine which concerns on 3rd Embodiment.

  The present invention relates to a piston steam engine in which a piston is slidably disposed in a cylinder, a crankshaft is interlocked with the piston, and the rotational movement of the crankshaft is interlocked with the reciprocating sliding of the piston. A cylinder that can receive the heat of the cylinder is arranged, and the piston that slides back and forth in the cylinder is used as a heat transfer surface part having a heat exchange function. By ejecting the working fluid that has become high-pressure and high-temperature superheated liquid through the injector into the flash space closed by the piston in the vicinity of the dead center, a certain percentage of the space is at a lower pressure than the superheated liquid saturation pressure. Superheated water turns into steam, and the steam expands and activates the piston, and the superheated liquid that does not vaporize forms a flash space in the form of droplets. Becomes steam while being boiled by colliding with the inner surface of the part, in which the steam to provide a steam engine, characterized in that to trigger the piston expands. In the present specification, such a steam engine is also referred to as a “piston steam engine”.

  The present invention also relates to a steam engine in which a rotor is rotatably disposed in a rotor housing, an eccentric shaft is inserted into the rotor, and the rotational motion of the eccentric shaft is linked to the rotational motion of the rotor. A rotor housing that can receive the heat of the rotor, and the rotor housing and the rotor that rotates in the rotor housing serve as a heat transfer surface portion having a heat exchanging function, and these heat transfer surface portions are heated by a high-temperature body, and the rotor A certain amount of superheated water in the space that is lower than the saturation pressure of the superheated liquid is ejected through the injector into the flash space closed by the housing and the rotor. The steam expands and activates the rotor to prevent vaporization. Provided a steam engine characterized in that the liquid collides with the inner surface of the heat transfer surface portion that forms a flash space in the form of droplets, boils and becomes steam, and the steam expands to activate the rotor But there is. In the present specification, such a steam engine is also referred to as a “Bankel rotary steam engine”.

  That is, in other words, superheated liquid injection, which is a high-temperature and high-pressure working fluid, is injected into a cylinder or rotor housing that is heated by the heat of a high-temperature body, and a certain ratio is obtained in a space that is lower than the saturation pressure of the superheated liquid. The piston and rotor are activated by generating a flash work that uses the superheated water of steam and a superheated liquid that has not been vaporized by the flash work, and a boiling work that instantly boils and vaporizes. It can be said that it is a steam engine that obtains power by making it happen.

  Here, the high heat body is not particularly limited as long as it has thermal energy capable of generating flash work and boiling work with superheated liquid injected into the cylinder or rotor housing.

  In other words, under the pressure in the cylinder or rotor housing where the flash work was performed, all of the superheated liquid splashed as droplets during the vaporization and expansion stroke described below is transferred to the amount of heat that can be vaporized by the boiler work. What is necessary is just to be able to give to a hot surface part.

  As such a high heat body, for example, a fluid such as high-temperature gas or liquid, or a device that generates high heat can be used.

  When a high-temperature fluid is used as a high-temperature body, it is possible to receive heat by arranging the cylinder that constitutes the piston steam engine and the rotor housing that constitutes the Wankel-type rotary steam engine in the high-heat flow path through which the high-temperature fluid flows. Also good. At this time, by increasing the surface area of the cylinder or the rotor housing, the contact area with the high heat fluid may be expanded to improve the heat receiving efficiency.

  In addition, the high heat fluid may be a waste heat fluid. By using the waste heat fluid, the waste heat can be converted into power, and the waste heat can be effectively used.

  In addition, when a device that generates high heat is a high heat body, a specific example is given. When an internal combustion engine is a high heat body, the internal combustion engine and the piston steam engine are integrally configured by one cylinder block. Or by arranging a Wankel-type internal combustion engine and a Wankel-type rotary steam engine together side by side through the side housing, the heat generated by the internal combustion engine is propagated through the cylinder block or the side housing, The engine can also receive heat.

  The working fluid that is injected into the cylinder or the rotor housing may be recovered after the injection and used again for the injection.

  That is, the wet steam generated in the flash space by the flash work or the boiler work may be discharged outside the cylinder or rotor housing after the piston or rotor is activated, liquefied through the liquefaction device, and injected again as the working fluid. With such a configuration, the working fluid can be circulated and used.

  The working fluid to be used for injection is not particularly limited as long as it is a fluid that can cause a flash work or a boiling work by phase transition between gas and liquid, depending on the temperature of the hot body to be used. It can be selected appropriately.

  In particular, when the working fluid is water, the piston steam engine can be driven safely at low cost even if it leaks.

[First Embodiment]
Hereinafter, a piston steam engine A as a steam engine according to the first embodiment will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing a configuration of a piston steam engine A according to the first embodiment.

  The piston steam engine A according to the first embodiment uses exhaust gas as a high-temperature waste heat fluid discharged from the internal combustion engine 1 as a high temperature body. Further, water is used as the working fluid.

  The exhaust gas discharged from the internal combustion engine 1 is branched into a first gas flow path 2 that heats the working fluid and a second gas flow path 4 that heats the motor unit 3. Both the first gas flow path 2 and the second gas flow path 4 function as part of a high heat flow path through which the waste heat fluid flows.

  A working fluid heating chamber 6 in which a heat exchanger 5 is disposed is provided in the middle of the first gas flow path 2.

  Water (working fluid) pressurized by the pump 7 is supplied to the heat exchanger 5, and heat exchange is performed between the exhaust gas and water to generate superheated liquid that is high-temperature and high-pressure water. The superheated liquid produced | generated by the heat exchanger 5 is supplied to the injector 8 arrange | positioned at the below-mentioned engine part 3. As shown in FIG.

  The exhaust gas that has passed through the working fluid heating chamber 6 is then released into the atmosphere.

  On the other hand, the exhaust gas branched into the second gas flow path 4 reaches the motor unit 3. The motor unit 3 includes a motor main body 9 and an exhaust gas guide case 10 that covers an upper portion of the motor main body 9 in an airtight manner.

  The motor body 9 includes a crankcase 11, a cylinder 12, and a cylinder head 13.

  A crankshaft 14 is housed in the crankcase 11, and an end portion of the crankshaft 14 protrudes out of the crankcase 11 to serve as an output shaft (not shown) for extracting power.

  In addition, a piston 16 is linked to the crankshaft 14 via a connecting rod 15, and the crankshaft 14 is rotated by the vertical movement of the piston 16 in the cylinder 12.

  The cylinder head 13 is formed with a recess 17 formed to face the upper opening of the cylinder 12. The recess 17 is a part that functions as a flash space when the piston 16 sliding in the cylinder 12 reaches the vicinity of the top dead center.

  Further, an injector 8 for injecting superheated liquid into the flash space is provided on the inner peripheral surface of the recess 17.

  A solenoid 8a is disposed above the injector 8, and when power is supplied by a control unit (not shown), the solenoid 8a is excited and superheated liquid is injected into the flash space.

  In addition, a steam discharge passage 19 for discharging wet saturated steam generated in the flash space is formed in the upper part of the cylinder head 13, and an opening on the flash space side of the steam discharge passage 19 is formed in the opening. A valve 20 for closing the opening so as to be freely opened and closed is disposed.

  The valve 20 is urged toward the closing side by a valve spring 21 disposed at the base of the valve 20, and is urged at a predetermined timing by a cam 22 also disposed at the base of the valve 20. The opening of the steam discharge flow path 19 is opened by being pressed against.

  The wet saturated steam discharged from the steam discharge passage 19 to the outside of the motor unit 3 reaches a condenser 30 as a liquefying device. In the condenser 30, heat exchange is performed with a predetermined refrigerant (outside air in the first embodiment), and the vapor is condensed and liquefied to obtain a working fluid.

  The working fluid obtained in the condenser 30 is sent to a storage tank 31 that stores a predetermined amount of working fluid. Note that the working fluid stored in the storage tank 31 is supplied to the heat exchanger 5 while being pressurized again by the pump 7 to become superheated liquid.

  That is, the working fluid is circulated in the following manner: storage tank 31 → pump 7 → heat exchanger 5 → injector 8 → flash space → steam discharge passage 19 → condenser 30 → storage tank 31.

  Returning to the description of the motor unit 3, fins 23 are provided on the side surfaces of the cylinder 12 and the cylinder head 13, so that the heat of the exhaust gas can be received efficiently.

  The exhaust gas guide case 10 is a box-like member that airtightly accommodates the upper part of the cylinder head 13 and the cylinder 12 that constitute a part of the second gas flow path 4, and introduces exhaust gas discharged from the internal combustion engine 1. An outlet 10a and an outlet 10b for discharging are provided.

  The exhaust gas guide case 10 covers the cylinder head 13 and the cylinder 12 of the motor main body 9, and the exhaust gas introduced into the exhaust gas guide case 10 is provided with fins 23 provided in the cylinder 12 and the cylinder head 13. Thus, heat exchange is performed, and the exhaust gas from which heat has been removed is released into the atmosphere through the discharge port 10b.

  Next, the movement of the piston steam engine A having the above-described configuration will be described.

  The water stored in the storage tank 31 is first fed to the heat exchanger 5 while being pressurized to a predetermined pressure by the pump 7.

  In the heat exchanger 5, heat exchange with the exhaust gas discharged from the internal combustion engine 1 is performed, and the high-temperature and high-pressure (for example, 350 ° C., 170 bar) superheated liquid is supplied to the injector 8.

  On the other hand, the exhaust gas branched into the second gas flow path 4 is heat-exchanged by the fins 23 in the exhaust gas guide case 10, and the cylinder head 13, the cylinder 12, and the piston 16 are heated to a predetermined temperature (for example, 350 ° C.). To do.

  In such a state, first, when superheated liquid is injected from the injector 8 into the flash space, a part of the superheated liquid is instantaneously expanded due to the pressure difference, and flash work is performed.

  At almost the same time, the fine droplets of the superheated liquid that has been scattered collide with the heated inner wall surface of the cylinder 12 and the upper surface of the piston 16 (hereinafter, these surfaces are collectively referred to as a heat transfer surface portion). Boiling work is performed.

  When the flash work and the boiling work are generated, the pressure in the flash space becomes high, the piston 16 is pushed down, the crankshaft 14 is rotated via the connecting rod 15, and a driving force is generated (vaporization). Expansion stroke).

  Next, the piston 16 is pushed up through the connecting rod 15 by the inertia force of the counterweight 14 a provided on the crankshaft 14. At this time, the valve 20 is opened, and the wet saturated steam in the flash space is discharged out of the motor unit 3 through the steam discharge passage 19 (steam discharge process).

  When the piston 16 reaches the vicinity of the top dead center, the valve 20 closes the steam discharge passage 19 and the superheated liquid is injected into the flash space again.

  Thus, the power conversion using the heat of exhaust gas is performed by repeatedly performing the vaporization expansion process and the steam discharge process.

  In addition, the wet saturated steam discharged in the steam discharge process is sent to the condenser 30, phase-changed to a liquid, and stored in the storage tank 31.

  Thus, according to the piston steam engine A according to the first embodiment, the cylinder 12 that can receive the heat of the exhaust gas is disposed, and the cylinder 12 and the piston 16 that reciprocates in the cylinder 12 are heat-exchanged. These heat transfer surface portions are heated by exhaust gas, and the superheated liquid in a high pressure and high temperature state is passed through the injector 8 into the flash space closed by the cylinder 12 and the piston 16 near the top dead center. By blowing out the water that has been made, the superheated water of a certain ratio becomes steam in the space that is lower than the saturation pressure of the superheated liquid, and the steam expands to activate the piston 16, and the superheated liquid that is not vaporized is The liquid collides with the inner surface of the heat transfer surface that forms a flash space in the form of liquid droplets, boils and becomes steam, and the steam expands to activate the piston. Therefore, it is possible to provide a piston steam engine capable of utilizing the thermal energy obtains power.

  The power obtained by the piston steam engine A may be used as auxiliary power for the internal combustion engine 1 or may be used as an independent power source.

  For example, in the former case, the power from the output shaft extending from the crankshaft 14 of the piston steam engine A is added to the power from the output shaft of the internal combustion engine 1, so that the piston steam engine A can be used as auxiliary power for the internal combustion engine 1. It can be used as an institution. Moreover, if it is the latter, the utilization as motive power for driving a generator etc. can be considered.

[Second Embodiment]
Next, a piston steam engine B as a steam engine according to the second embodiment will be described with reference to FIG. The piston steam engine B according to the second embodiment has substantially the same configuration as that of the piston steam engine A described above, but is provided with a fuel mixture supply line 40 and a spark plug 42, and the internal combustion engine. Subsequent to the activation cycle, the structure is different in that the vaporization expansion process and the steam discharge process are performed.

  In other words, an ordinary internal combustion engine is characterized in that it has a function as a piston steam engine by performing the above-described vaporization expansion stroke and steam discharge stroke. In FIG. 2, the movement in the motor unit 43 corresponding to the above-described motor unit 3 will be mainly described, and the circulation mechanism of the working fluid is the same as that in the above-described embodiment, and thus the description thereof is omitted. In the second embodiment, a 6-stroke piston steam engine B based on a 4-stroke engine will be described. That is, four strokes as an internal combustion engine and two strokes as a piston steam engine are performed.

  In the piston steam engine B, first, as shown in FIG. 2A, the fuel supply valve 41 is opened, and a fuel mixture obtained by mixing vaporized fuel such as gasoline and air at a predetermined ratio from the supply pipe 40 is cylinderized. The inhalation stroke taken in 52 is performed.

  Next, as shown in FIG. 2B, the piston 56 is raised in the cylinder 52 to perform a compression stroke in which the sucked fuel mixture is compressed.

  Next, as shown in FIG. 2C, the spark plug 42 disposed in the cylinder head 53 is sparked to ignite the compressed fuel mixture, and a combustion expansion stroke is performed in which the piston 56 is pushed down by the explosive force.

  When the main combustion expansion stroke is performed, the crankshaft 54 rotates and a driving force is generated. In addition, by this combustion expansion stroke, the inner wall of the cylinder 52 and the upper wall of the piston 56 are heated and function as a high temperature body.

  Next, the piston 56 is raised by inertia, the exhaust valve 60 is opened, and an exhaust stroke for pushing the combustion gas out of the cylinder 52 is performed.

  Next, superheated liquid is injected from the injector 8 into the flash space after the combustion gas is discharged, and a flash work and a boiling work are generated, and a vaporization expansion process is performed in which the pressure in the flash space is increased and the piston 56 is pushed down. .

  That is, the inner wall of the cylinder 52 as a high heat body and the upper wall of the piston 56 also function as a heat transfer surface portion, whereby a boiling work is generated.

  By performing this vaporization expansion stroke, the crankshaft 54 rotates and further driving force is generated.

  Then, the piston 56 rises due to inertia, the exhaust valve 60 is opened, and the wet saturated steam is discharged to the outside (steam discharge process). The wet saturated vapor at this time may be condensed and recovered in the same manner as in the above-described embodiment, or may be discharged into the atmosphere as it is.

  In this way, the above-described intake stroke → compression stroke → combustion / expansion stroke → exhaust stroke → vaporization / expansion stroke → steam exhaust stroke is performed, so that the heat energy generated in the internal combustion engine is provided while having the function of the internal combustion engine. It can be made to function as a piston steam engine which can obtain motive power using.

[Third Embodiment]
Next, a Wankel type rotary steam engine C as a steam engine according to a third embodiment will be described with reference to FIG. In FIG. 3, the movement in the motor unit 63 corresponding to the motor unit 3 in the first embodiment will be mainly described, and the circulation mechanism of the working fluid is the same as that in the above-described embodiment, and thus the description will be given. Omitted. Moreover, about the structure similar to the above-mentioned embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The motor unit 63 of the Wankel-type rotary steam engine C includes a motor main body 69 and an exhaust gas guide case (not shown) that covers the periphery of the motor main body 69 in an airtight manner. The discharged exhaust gas is guided around the motor main body 69 so that the motor main body 69 can be heated.

  The motor main body 69 includes a rotor housing 72 having an inner peripheral surface formed in the shape of a cocoon-shaped trochoid.

  An eccentric shaft 74 is housed in the central portion of the rotor housing 72, and an end portion (end portion in the depth direction on the paper surface) of the eccentric shaft 74 projects outside a side housing (not shown) to output power (see FIG. Not shown).

  The eccentric shaft 74 is provided with a substantially triangular rotor 76 so as to be rotatable, and the eccentric shaft 74 is rotated by the rotation of the rotor 76 in the rotor housing 72. Yes.

  In the rotor 76, concave portions 77 are formed at portions corresponding to the sides of the triangle. The recess 77 is a part that functions as a flash space when the rotor 76 reaches the position (phase) shown in FIG.

  Further, an injector 8 for injecting superheated liquid into the flash space is provided on the inner peripheral surface of the rotor housing 72 where the rotor 76 faces the concave portion 77 at the position (phase) shown in FIG. It is provided in an exposed state inside.

  Further, the rotor housing 72 is formed with a suction flow path 71 for sucking in air for adjusting the internal pressure of the flash space, and a steam discharge flow path 79 for discharging wet saturated steam generated in the flash space. ing.

  The wet saturated steam discharged from the steam discharge passage 79 to the outside of the motor unit 63 is sent to the condenser 30 as the liquefying device, and the steam is condensed to be liquefied and used again as a working fluid.

  Fins 83 are provided on the outer peripheral surface portion of the rotor housing 72 so that the heat of the exhaust gas discharged from the internal combustion engine can be received efficiently.

  Next, the movement of the Wankel type rotary steam engine C having the above-described configuration will be described. Here, for convenience of explanation, description will be made by paying attention to one of the recesses 77 provided on each side of the rotor 76. However, as in a known rotary internal combustion engine, the operation described below is performed by the rotor 76. This is performed by changing the phase at each side.

  In the Wankel-type rotary steam engine C, first, as shown in FIG. 3A, an intake stroke for taking air from the intake passage 71 into the rotor housing 72 is performed.

  Next, as shown in FIGS. 3B and 3C, when the rotor 76 rotates in the leading direction, the space surrounded by the inner peripheral surface of the rotor housing 72 and one side of the rotor 76 is gradually narrowed. Thus, a compression stroke for compressing the sucked air is performed.

  Next, as shown in FIG. 3 (d), superheated liquid is injected from the injector 8 into the flash space formed when the concave portion 77 of the rotor 76 comes close to the position opposite to the injector 8, and flashwork and boiling are performed. A vaporization expansion process is performed in which the workpiece is generated and the rotor 76 is rotated in the leading direction while the flash space is in a high pressure state.

  That is, the inner wall of the rotor housing 72 and the rotor 76 function as a heat transfer surface portion, whereby a boiling work is generated.

  By performing this vaporization expansion stroke, as shown in FIG. 3E, the eccentric shaft 74 rotates and a driving force is generated.

  Then, when the rotor 76 further rotates and the space surrounded by the inner peripheral surface of the rotor housing 72 and one side of the rotor 76 reaches the position of the steam discharge passage 79, FIGS. 3 (e) and 3 (f). As shown, the wet saturated steam is discharged to the outside through the steam discharge flow path 79 (steam discharge process). In the third embodiment, the wet saturated steam at this time is condensed and recovered, but may be discharged into the atmosphere as it is.

  In this way, the above-described suction stroke → compression stroke → vaporization / expansion stroke → steam exhaust stroke is performed, and thus, a Wankel type rotary steam engine that can obtain power using the thermal energy of the exhaust gas discharged from the internal combustion engine. Can function as.

  Further, the Wankel type rotary steam engine C according to the third embodiment has the following advantages.

  That is, in actually driving the Wankel type rotary steam engine C, the lubrication of the eccentric shaft 74 and the lubrication of the flash space can be separated, so that the piston system shown in the first and second embodiments is more than that. It is advantageous for lubrication.

  In addition, since the surface area of the flash space is larger than that of the piston system, in the case of a steam engine driven by heat obtained from the fins 83 on the surface of the rotor housing 72, it is considered that the Wankel type rotary steam engine is more advantageous. .

  Further, when recovering the injected superheated liquid, the rotor housing 72 only needs to be perforated without providing a valve or the like, so that the mechanism can be extremely simple. At this time, if a drain hole for discharging can be formed below the rotor housing 72, discharging becomes easier.

  Further, separately from the injector that injects the superheated liquid, an injector that injects lubricating oil during the intake stroke can be easily arranged, and the lubricating performance can be further improved.

  Thus, in each point mentioned above, it is thought that a Wankel type | mold rotary steam engine is advantageous compared with a reciprocating steam engine.

  The power obtained by the Wankel type rotary steam engine C may be used as auxiliary power for the internal combustion engine as well as the piston steam engine A described above, or may be used as an independent power source. Of course.

  As described above, in the piston steam engine A and the piston steam engine B according to the present embodiment, a piston (for example, the piston 16, 56) is slidably disposed in a cylinder (for example, the cylinder 12, 52), and the piston is disposed in the piston. A piston steam engine in which a crankshaft (for example, the crankshafts 14 and 54) is interlocked and linked, and the rotation of the crankshaft is interlocked with the reciprocating sliding of the piston. ) And a piston that reciprocally slides in the cylinder are used as heat transfer surface portions having a heat exchange function, and these heat transfer surface portions are heated by a high temperature body, High pressure is passed through an injector (for example, injector 8) into a flash space closed by a piston near the top dead center. By ejecting a working fluid (for example, water) that has become a superheated liquid at a high temperature, a certain percentage of superheated water is converted into steam in the space that is lower than the saturation pressure of the superheated liquid, and the steam expands. The superheated liquid that does not evaporate when the piston is activated (for example, flash work) collides with the inner surface of the heat transfer surface portion that forms a flash space in the form of droplets, boils and becomes steam, and the steam expands. Since the piston is activated (for example, a boiler work), it is possible to provide a piston-type steam engine that can obtain power using thermal energy.

  In the Wankel-type rotary steam engine C according to the present embodiment, a rotor (for example, the rotor 76) is rotatably disposed in a rotor housing (for example, the rotor housing 72), and an eccentric shaft (for example, an eccentric shaft) is disposed on the rotor. 74) is a steam engine in which the rotational motion of the eccentric shaft is linked to the rotational motion of the rotor, and the rotor housing capable of receiving the heat of a high-temperature body (for example, exhaust gas discharged from the internal combustion engine). Arrangement (for example, the motor main body 69 disposed in the exhaust gas guide case), and the rotor housing and the rotor that rotates in the rotor housing serve as a heat transfer surface portion having a heat exchange function, and these heat transfer surface portions Is heated by a high-temperature body, and the rotor housing and rotor By ejecting the working fluid which has become a high-temperature and high-temperature superheated liquid through an injector (for example, the injector 8) into the flash space to be closed, a certain percentage of superheat is generated in the space whose pressure is lower than the saturation pressure of the superheated liquid. The water is turned into steam, and the steam expands and activates the rotor (for example, flashwork). The superheated liquid that does not evaporate collides with the inner surface of the heat transfer surface that forms the flash space in the form of droplets and boils. Since the steam is expanded and the steam expands to activate the rotor (for example, a boiler work), a Wankel-type rotary steam engine capable of obtaining power using thermal energy can be provided.

  Finally, the description of each embodiment described above is an example of the present invention, and the present invention is not limited to the above-described embodiment. For this reason, it is a matter of course that various modifications can be made in accordance with the design and the like as long as they do not depart from the technical idea according to the present invention other than the embodiments described above.

  For example, in the first embodiment, the high-temperature exhaust gas from the internal combustion engine 1 is used as a high-temperature heat body. However, the present invention is not limited to this, and a piston steam engine may be attached to a high-temperature exhaust duct in a factory to obtain power. good. The same applies to the Wankel rotary steam engine C in the third embodiment.

DESCRIPTION OF SYMBOLS 1 Internal combustion engine 2 1st gas flow path 4 2nd gas flow path 8 Injector 10 Exhaust gas guide case 12 Cylinder 13 Cylinder head 14 Crankshaft 15 Connecting rod 16 Piston 17 Recessed part 19 Steam discharge flow path 20 Valve 21 Valve spring 23 Fin 30 Condensation Equipment 31 Storage tank 63 Engine section 69 Engine body section 71 Suction passage 72 Rotor housing 74 Eccentric shaft 76 Rotor 77 Recess 79 Steam discharge passage 83 Fin A Piston steam engine B Piston steam engine C Wankel type rotary steam engine

Claims (4)

A first flow path and a second flow path for flowing the branched hot fluid;
A working fluid heating chamber that is provided in the first flow path and exchanges heat between the high-temperature fluid flowing in the first flow path and the working fluid to use the working fluid as a superheated liquid;
A motor main body disposed in the second flow path,
The motor body is
A flash space facing the heat transfer surface heated by the heat of the hot fluid flowing in the second flow path;
The superheated liquid that is in a high pressure and high temperature state in the working fluid heating chamber is ejected by a high temperature fluid flowing in the first flow path, and the superheated liquid is discharged in the flash space that is lower in pressure than the saturation pressure of the superheated liquid. A part of the steam is expanded and vaporized to generate a flash work and activate the engine main body, and the remaining superheated liquid that does not evaporate collides with the heat transfer surface and boils by a heat exchange function. A steam engine comprising: an injector that activates the engine main body as steam expanded by a workpiece ; The wet saturated steam generated in the flash space is discharged to the outside, and the working fluid liquefied through a liquefier is provided.
The liquefied working fluid is converted into the high-temperature and high-temperature superheated liquid through a heat exchanger of the working fluid heating chamber by a pressurizing pump, and jetted through the injector into the flash space. Item 4. The steam engine according to Item 1 . The engine main body is configured such that a piston is slidably disposed in a cylinder, a crankshaft is linked to the piston, and a rotational movement of the crankshaft is linked to the reciprocating sliding of the piston.
The cylinder is disposed in the second flow path so as to be able to receive heat of the high-temperature fluid, and the piston that reciprocates and slides in the cylinder is used as the heat transfer surface portion having a heat exchange function.
The piston and the boiling work are generated by ejecting the superheated liquid in a high-pressure and high-temperature state through the injector into the flash space closed by the piston near the cylinder and the top dead center. The steam engine according to claim 1, wherein the steam engine is activated . The motor main body is configured such that a rotor is rotatably disposed in a rotor housing, an eccentric shaft is inserted into the rotor, and the rotational motion of the eccentric shaft is linked to the rotational motion of the rotor.
The rotor housing is disposed in the second flow path so as to be able to receive the heat of the high-temperature fluid, and the rotor housing and the rotor that rotates in the rotor housing serve as the heat transfer surface portion having a heat exchange function,
Causing the flash work and the boiling work to be generated by injecting the superheated liquid in a high-pressure and high-temperature state through the injector into the flash space closed by the rotor housing and the rotor, thereby activating the rotor. The steam engine according to claim 1 or 2 , characterized in that .

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