JPS5857627B2 - Kaitengata Starling Kikan - Google Patents

Description

[Detailed Description of the Invention] [Subject of the Invention] The present invention provides a heat storage device between a rotor that has a built-in multifluid heat exchanger and is at approximately room temperature, and a rotor that is at a high temperature or an extremely low temperature, and A heating shaft generates rotational power, and a rotating shaft such as a morph is related to a rotating Stirling engine that can generate cryogenic temperatures or be used as a heat pump.

[Field of application of the present invention]

The above-mentioned rotating Stirling engine is a starlink engine that theoretically consists of four processes: two isovolume changes and two isothermal changes.
cycle and can be used in external combustion engines, refrigerators, and heat pumps.

[Prior art]

All engines that have been put into practical use using this heat cycle are of the reciprocating type, with the exception of external combustion engines in which only the rotor is rotated (U.S. Pat. Nos. 3,487,424 and 3,537,269).

[Problems in the prior art and their technical analysis] The disadvantages of this conventional external combustion engine, whether rotary or reciprocating, are that it has a complex structure, has a large number of parts, is heavy, and has a high failure rate. It had

This problem arises because in the rotary type, only the rotor is rotated, whereas in the reciprocating type, the reciprocating motion of the piston must be converted into rotational motion.

[Problem of the present invention]

The present invention has a relatively simple structure and reduces the number of parts, device volume, and weight compared to a normal Stirling engine.

[Technical means]

The technical means taken to solve the above technical problem is to arrange a large housing 15 and a small housing 4 at intervals so that their axes are parallel, and to place a large rotor 16 in the large housing 15 and The housing 4 accommodates eccentrically rotatable small rotors 5, and the large rotor 16.
and the small rotor are fixed so that they are on the same axis of rotation, the small rotor 5 is fixed to the rotating shaft 1, and the large rotor 1 is fixed to the rotating shaft 1.
6, one or more large movable wings 50 and one or more small movable wings 54 are attached to the small rotor 5 so as to slide in the diametrical direction of the small rotor 5 and contact the large housing 15 and the small housing 4, respectively, and the large movable wings 50, Each of the small movable wings 54,
A phase difference is provided corresponding to the number of phases so that a cycle of two or more phases can be performed, and the small rotor 5 and the large rotor 1
6, a heat exchanger 29 having operating parts (29a, 29b (not shown), 29c, 29d (not shown)) corresponding to the number of phases and a regenerator 23 (23a, 23b) corresponding to the number of phases.
, 23c, 23d), and the heat exchanger 29 is housed in the inner cylinder side of the small rotor 5, and the regenerator 23(
One end of 23a-d) is fixed to the side surface of the large rotor 16, and a volume space 17 (17a, 17b,
17c.

17d), and the other end of the regenerator 23 (23a to 23d) is connected to an operating portion (29) corresponding to the number of phases of the heat exchanger 29.
a, 29b (not shown), 29c.

29d (not shown)), and the heat exchanger 2
The other ends of the actuating parts (29a, 29b (shown), 29c, 29d (not shown)) corresponding to the number of phases of 9 are connected and fixed to one end of the small rotor working flow path pipe 7 corresponding to the number of phases. Seshime,
The other end of the small rotor working flow path pipe 7 is fixed to the small rotor 5, and a small variable volume space 6 (6a, 6b) corresponding to the number of phases is provided.
, 6c.

6d).

By doing this, the structure is relatively simple,
The number of parts, device volume, and weight can be reduced.

[Effect of technical means]

The thermal cycle of the rotary Stirling engine of the present invention is the Stirling cycle, which theoretically consists of (1) isothermal compression, (2)
It consists of the processes of isovolume change, (3) isothermal expansion, and (4) isovolume change, and one cycle is completed for each rotation of the rotor.

Here, an external combustion engine will be explained.

The working fluid is helium, hydrogen, air, other fluids, or a mixture thereof, and is sealed in this engine. In FIG. 6, the large rotor 16 rotates 900 times faster than the small rotor 5.
The operation when the phase angle is 900 is shown, and Fig. 7 shows the volume change of the operating space. Only the combination a will be explained, but c-d only has a deviation of 1/4 rotation of axis 1. And the operation is exactly the same.

(1) Isothermal compression process A→B The working fluid is mainly compressed in the small variable volume space (compression space) 6a, and enters the working part 29a of the heat exchanger 29 from the flow path pipe 7a. 29 and water from the cooling water jacket 8.

During this process, the fluid actually undergoes a polytropic compression change that is close to isothermal compression.

(2) Equal volume process B-+C The cooled fluid passes through the heat storage device 23a and moves to the large variable volume space (expansion space) 17a in an approximately equal volume manner.

At this time, since the temperature of the heat storage device 23a is high on the large rotor 16 side and low on the heat exchanger 23 side, the fluid receives heat from the matrix 25a of the heat storage device 23a, and the temperature and pressure increase.

(3) Isothermal expansion process C-+D The fluid in the large variable volume space undergoes polytropic expansion close to isothermal expansion while being heated.

At this time, the fluid generates work, and the difference between the compression work and friction loss in the compression space becomes an effective shaft output.

The large housing 15 and the heat pipes (19, 20) are heated by the flame of a burner or the like, and the heat is efficiently transferred to the fluid by the action of the heat pipe.

(4) Volume equalization process The heated and expanded fluid moves to the small variable volume space 6a in an approximately equal volume manner.

At this time, the heat of the fluid is absorbed by the matrix 25a in the heat storage device 23a, so that the temperature of the fluid decreases and the pressure also decreases.

The above explanation is for an external combustion engine, but if the sizes of the two variable volume spaces are reversed and the shaft is rotated by an electric motor etc. without heating, it can be used as a refrigerator in which freezing occurs in the housing on the expansion part side. Become.

Moreover, if heat is absorbed from the atmosphere on the expansion part side, the heat pump becomes a heat pump that generates high heat on the compression part side.

[Special effects produced by the present invention]

The present invention produces the following unique effects.

1. By making the flow of the working fluid between each rotor linear, the resistance of the working fluid and the wasted space of the flow path can be reduced, and the efficiency of the heat engine can be increased.

2 By directing the flow of the working fluid in the axial direction of the shaft, the temperature gradient of the working fluid and the heat engine as a whole can be made uniform in the axial direction of the shaft, reducing heat loss due to heat flow. I can do it.

3. Since the heat exchanger rotates together with the shaft, especially if fins are provided on the outside of the heat exchanger, the efficiency of heat exchange can be increased, and the cooling fluid can be sucked in and discharged by the pump action.

[Example J] Hereinafter, an example showing a specific example of the above-mentioned technical means will be described.

In FIG. 1, a rotating shaft 1, a small rotor 5, a heat exchanger 29
, the heat storage device 23 and the large rotor 16 are connected to the bolts (27 and 3
4) and rotated as a unit by bearings (10 and 2).

Also, large housing 15, large housing flange 14,
Sheath 13, variable phase angle flange 11, small housing
The kite 9, the small housing 4, the bearing case 3, and the cover flange 35 are connected with bolts (37, 12, 30° 36), etc., to form an integral body.

As shown in FIGS. 1, 3 and 4, the large rotor 1
6 has a large movable blade 50, a large rotor internal working fluid flow path 18,
The small rotor 5 has a small movable blade 54 and a working fluid pipe 7 in the small rotor.
The area surrounded by the rotor, housing and movable blades is a variable volume space, with the large roller side being the large variable volume space 17 and the small roller side being the small variable volume space 6.

In this example, four movable blades are attached to one rotor,
Since the variable volume space is divided into four parts, it is a so-called four-cylinder engine.

Therefore two variable volume spaces (6 and 17), heat exchanger 2
9. Regenerator 23, working fluid pipes and channels (7 and 18)
are each divided into four operating parts, and these are a,
Represented by subscripts b, c, and d.

As long as there are two or more divisions, any number of divisions is fine; the higher the number, the smoother the output will be, or the more difficult it will be to manufacture (note that if a Wankel engine housing and rotor are used, it will become three cylinders).

The heat exchanger 29 has a small rotor 5 as shown in FIGS.
The four operating parts (29a to 2
9d), the perforated laminate plates are stacked and assembled into an integral shape to form a multi-fluid type.

A central waterway 47 is provided at the center, and a spiral convex portion 32 is formed on the outside to provide a spiral wet waterway 46 so as to surround the working fluid from the inside and outside, allowing the cooling water to flow well in a spiral shape, resulting in a high cooling effect.

Further, by rotation, the spiral convex portion 32 exerts a pumping action on the cooling water, and together with the fins, a forced cooling effect is produced.

Note that this effect can be further enhanced if a spiral recess is also provided in the housing 39 and the small rotor 5 that face this convex part.

The cooling water flows into the bearing cooling jacket 41 from the cooling water port 40 (FIG. 1), cools the bearing 2, and then enters the central waterway 47 from the cooling water inflow hole 42 provided in the shaft.

Here, the cooling water cools the shaft 1 and further the heat exchanger 29, passes through the drainage jacket 44 from the cooling water outlet hole 45 in the flange of the shaft, and is drained from the cooling water outlet 43.

On the other hand, the cooling water is also made to flow into the cooling water jacket 8,
To keep the temperature of a small housing 4 low.

Furthermore, as shown in Fig. 3, the heat storage device 23, 23' consists of four operating parts (23a to 23d, 23'a to 23'd), and as shown in Fig. 3, the heat storage pipe (24a to ~24d
) or by inserting matrices (25a to 25d) made of metal balls, nets, etc. into the flow channels of the laminated metal plates 24'.

In case of B, metal plate 24' (stainless steel, steel, etc.)
By brazing, welding, gluing, etc. 49 in the concave portion 48 to reduce heat transfer between the laminates, heat is transferred between the four divided parts (23'a to 23'd). The exchange takes place, resulting in a heat exchanger type heat storage device.

The multi-fluid heat exchanger and multi-fluid heat storage device used here are based on the applicant's patent No. 693054 "Low temperature heat exchanger", which consists of a perforated metal plate with many depressions formed by pressing. The heat transfer area is large (approximately 5
000 rn'/m ), robust against rotational centrifugal forces and thermal cycling.

The structure of the movable wing is shown in Figure 4.

The large movable blade 50 includes a side seal 52 and a leaf spring 51 and a coil spring 53 for applying surface pressure to the seal surface, respectively, but the Komachi rotor blade 54 is a smaller version of the large movable blade.

2L22, 26, 31.33 are rotary seals that prevent leakage of working fluid.

In addition, in the large variable volume space 17, the working fluid must be heated, so the large housing 15 is heated with a combustion burner or the like (in the case of a refrigerator, refrigeration is generated here and heat is also absorbed), but heat absorption is not possible. For better performance, human pipes (19, 20) are attached to the large housing, allowing a portion of the working fluid to enter and exit.

The variable phase angle flange 11 is a small housing with a port 12.
Since it is fixed to side 9, the mounting position can be changed, and the so-called "phase angle" in the Starlink cycle
can be arbitrarily selected.

Furthermore, a circuit for supplying working fluid and controlling pressure is shown in FIG.

A high pressure check valve 62 for setting the maximum value of the working fluid pressure and a low pressure check valve 62 for setting the minimum value of the working fluid pressure.
The pressure limit value is determined by the valve 72.

Reference numeral 60 denotes a working fluid discharge port, which is provided at a position in the small housing 4 where the pressure is high.

On the other hand, the fluid is supplied from the working fluid supply lower 3, and this position is also selected at a position where the pressure is appropriately low.

64 is a working fluid reservoir, 65 is a working fluid supply valve, and 66
is a replenishment fluid port, and if the pressure is high, the fluid that exits the working fluid reservoir 64 passes through the pressure regulating valve 70, and is passed through the filter 71.
Working fluid supply hole 73 through low pressure check valve 72
If the pressure is low, the air enters the compressor 69 through the compressor suction hole 67, the pressure is increased, and the air flows through the compressor discharge hole 68 to the filter 71.

In order to stop or start the engine, a bypass valve 61 is provided, or 63 is a working fluid release valve, and a valve ('70.61) is used for rapid acceleration/deceleration.

[Brief explanation of drawings]

Fig. 1 is a cutaway elevational view of an embodiment of the present invention, Fig. 2 is an enlarged partially cutaway elevational view of the main parts of the same, mainly the heat exchanger, and Fig. 3
The figure is an enlarged perspective view of the main parts of the same as above, mainly the heat storage device. Figure 4 shows a movable blade, A is a perspective view of each part of the large movable blade, B is a sectional view of the large movable blade, C is a sectional view of the Komachi rotor blade, and Figure 5 is a working fluid supply and pressure adjustment circuit. FIG. 6 is a diagram showing changes in space volume due to the dog rotor and small rollers having a phase difference of 90 degrees, and FIG. 7 is an explanatory diagram of the operation of the main parts of the above embodiment. 1...Rotating shaft, 4...Small housing,
5...Small roller, 1...Small low = inner working fluid pipe, 15...Large housing, 16...
...Large rotor, 19.20...Heat pipe, 23.23'...Regenerator, 29...
Heat exchanger, 50...Large movable blade, 54...
・Small movable wings, 29a, 29b, 29c, 29d
−・−・・Active part of heat exchanger.

Claims (1)

[Claims] 1. Two large and small cylindrical housings are arranged at intervals so that their axes are parallel to each other, and two rotors are eccentrically fixed to the same rotating shaft.
One or more large movable blades and one or more small movable blades that slide in the diametrical direction and contact the respective housings are attached, and the movable blades of each rotor are provided with a phase difference corresponding to the number of phases, so that two or more phases are provided. A heat exchanger having a regenerator corresponding to the number of phases and an operating part corresponding to the number of phases is provided between the small rotor and the large rotor, and the heat exchanger is connected to the small rotor. The regenerator, the heat exchanger, the working fluid pipe in the small rotor, and the small rotor are sequentially fixed to the large rotor in a manner corresponding to the number of phases, and the heat exchanger and the regenerator are housed in the inner cylinder side of the regenerator. and a rotor so as to be able to rotate together with the rotating shaft, so that the working fluid can flow approximately linearly between the rotors at a position close to the axis of the rotating shaft via the heat exchanger and the heat storage device. A rotating Stirling engine that is characterized by: