WO2020095386A1

WO2020095386A1 - Scroll fluid machine

Info

Publication number: WO2020095386A1
Application number: PCT/JP2018/041360
Authority: WO
Inventors: 藤岡　完; 小林　健一; 齋藤　昌之; ルカネスポリ
Original assignee: アネスト岩田株式会社; エネルジェティカメンテリノヴァービリエスアールエル
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2020-05-14

Abstract

This scroll fluid machine is for compressing or expanding fluid containing air-fuel mixture gas and is provided with: a turning disc including a spiral-shaped first wrap standing on a first surface and a spiral-shaped second wrap standing on a second surface opposite to the first surface; a first fixed disc including a spiral-shaped third wrap standing on one surface facing the abovementioned first surface, the spiral-shaped third wrap together with the first wrap forming a compression chamber; and a second fixed disc including a spiral-shaped fourth wrap standing on one surface facing the second surface, the spiral-shaped fourth wrap together with the second wrap forming an expansion chamber.

Description

Scroll fluid machinery

The present disclosure relates to scroll fluid machines.

Conventionally, as scroll-type fluid machines, scroll compressors for compressing fluids and scroll expanders for extracting and using the energy of expanding fluids as swirling forces are known. For example, in Patent Document 1, two scrolls of fixed scroll wrap whose phases are shifted from each other by 180 ° about a first involute base circle and two scrolls of which phases are shifted from each other by 180 ° about a second involute base circle. A scroll expander configured to apply a high torque to the orbiting scroll wrap by arranging the orbiting scroll wrap and the orbiting scroll wrap with respect to the involute base circle by shifting their phases by 90 °.

JP, 2011-252434, A

By the way, in general, scroll fluid machines are characterized by less torque fluctuation, less noise and vibration, and higher energy efficiency than other fluid machines. Utilizing such characteristics, it is desired to be applied to various applications by combining scroll type fluid machinery.

As one of applications of such a scroll type fluid machine, for example, power generation is performed in which a fluid containing a mixture of air and fuel is compressed by a scroll compressor, and the compressed fluid is burned and expanded by a scroll expander. Devices (supercharged internal combustion scroll rotary motors) are conceivable. By using a scroll type fluid machine in the compression process and the expansion process of the fluid, this power generation device is expected to have better performance than a power generation device such as a conventional internal combustion engine.

However, since the conventional scroll compressor and scroll expander exist as a single scroll fluid machine in which a pair of scroll bodies are combined, respectively, in order to realize the power generation device described above, these scroll fluid machines are used. If they are simply combined, the entire device becomes redundant and large. With respect to this point, the above-mentioned Patent Document 1 also does not describe in detail the specific configuration relating to the compact combination of the scroll compressor and the expander.

In view of the above circumstances, at least one embodiment of the present invention aims to realize a scroll fluid machine including a compression chamber and an expansion chamber that handles a fluid containing a mixture for power generation, in a compact configuration. ..

(1) A scroll fluid machine according to at least one embodiment of the present invention is
A scroll fluid machine for compressing or expanding a fluid containing a mixture of air and fuel, comprising:
A swirl disk including a spiral first wrap standing on a first surface and a spiral second wrap standing on a second surface opposite to the first surface;
A first fixed disk including a spiral third wrap standing on one surface opposite to the first surface and forming a compression chamber with the first wrap;
A second fixed disk that includes a spiral fourth wrap that is provided upright on one surface facing the second surface and that forms an expansion chamber with the second wrap;
Is equipped with.

According to the above configuration (1), the orbiting disc includes the first wrap forming the compression chamber on the first surface thereof, and the second wrap forming the expansion chamber on the second surface opposite to the first surface. By including the wrap, the scroll type compression chamber can be arranged in parallel on one side and the scroll type expansion chamber can be arranged side by side on the other side of the orbiting disc. That is, the first wrap for forming the scroll type compression chamber and the second wrap for forming the scroll type expansion chamber are provided on one surface and the other surface of the common swivel disk, respectively. As a result, the scroll fluid machine including the compression chamber and the expansion chamber that handles the air-fuel mixture for generating power can be realized with a compact configuration.

(2) In some embodiments, in the configuration of (1) above,
A first scroll unit and a second scroll unit in which the first fixed disk and the second fixed disk are combined with the orbiting disk sandwiched may be provided in the orbiting axis direction of the orbiting disk.

According to the configuration of the above (2), the capacity of the expansion chamber or the compression chamber required according to the desired output is arbitrarily adjusted by the number of scroll units installed in the orbiting axis direction without increasing the size in the radial direction. A possible scroll fluid machine can be realized with a compact configuration.

(3) In some embodiments, in the configuration of (2) above,
The first fixed disk or the second fixed disk of the first scroll unit may be integrally configured with the first fixed disk or the second fixed disk of the second scroll unit.

According to the configuration of (3) above, the fixed disks of the first scroll unit and the second scroll unit that are adjacent to each other are integrally configured, so that the number of parts can be reduced.

(4) In some embodiments, in the configuration of (2) or (3) above,
The first scroll unit and the second scroll unit may be configured symmetrically with respect to a joint surface of the first scroll unit and the second scroll unit.

According to the configuration of (4) above, the two scroll units are symmetrically arranged in the orbiting axis direction with the joint surface of each scroll unit as a boundary. Therefore, for example, it is possible to realize a scroll fluid machine that is well balanced in the orbiting axis direction with respect to the load caused by the expansion of the compressed fluid or the orbiting motion of the orbiting disk with a compact configuration.

(5) In some embodiments, in the configuration of (4) above,
The first scroll unit and the second scroll unit may be combined so that the compression chamber is located closer to the joint surface than the expansion chamber.

According to the configuration of (5) above, the scroll units are combined so that the compression chamber is provided inside and the expansion chamber is provided outside with respect to the joint surface. With this, the expansion chamber can be easily accessed from the outside, and thus the fluid after expansion can be easily taken out.

(6) In some embodiments, in any one of the configurations (2) to (5) above,
A cooling unit including a coolant passage through which a coolant can pass may be provided between the first scroll unit and the second scroll unit.

With configuration (6) above, in a scroll fluid machine including two pairs of a compressor and an expander that are integrally and compactly combined, a cooling unit that includes a cooling passage through which a refrigerant can pass is provided between the scroll units. It is provided. Since the cooling unit is provided between the scroll units, it is possible to cool two scroll units adjacent to each other at the same time. The refrigerant that has recovered the amount of heat by cooling the two scroll units can also be used by taking it out to the outside.

(7) In some embodiments, in any one of the configurations (1) to (6) above,
The swivel disc may be configured to be swivelable relative to the first fixed disc and the second fixed disc by a plurality of support mechanisms arranged at different positions along the circumferential direction.

According to the above configuration (7), it is possible to realize a compact structure in which the turning disc is turned while preventing the turning disc from rotating.

(8) In some embodiments, in the configuration of (7) above,
The support mechanism may include a shaft that is connected to the swivel disc and extends in the swivel axis direction, and a bearing that rotatably supports the shaft.

According to the configuration of (8) above, the rotating disk can be rotatably supported by the bearing via the shaft rotatably supported by the bearing. Furthermore, for example, by using a bearing capable of bearing the load acting on the shaft in the radial direction and the thrust direction, it is possible to realize a smooth turning operation of the turning disk.

(9) In some embodiments, in any one of the configurations (1) to (8) above,
In the turning disk, the height of the first wrap may be different from the height of the second wrap.

According to the above configuration (9), the volume of the compression chamber formed on the first surface side of the swivel disc and the volume of the expansion chamber formed on the second surface side are arbitrarily adjusted with a simple configuration. be able to. For example, when the orbiting disk has a size restriction in the orbiting axis direction, the scroll fluid machine as a whole can arbitrarily change the volume ratio between the compression chamber and the expansion chamber without changing the size in the orbiting axis direction. Can be changed.

(10) In some embodiments, in any one of the configurations (1) to (9) above,
At least one of the first fixed disk and the second fixed disk may include a heat dissipation fin that is capable of contacting with the outside air.

According to the configuration of (10) above, since the contact surface for exchanging heat with the outside air can be increased by the radiation fins, it is possible to improve the cooling efficiency when the scroll fluid machine is used as a power source. ..

(11) In some embodiments, in any one of the configurations (1) to (10) above,
The scroll fluid machine,
A communication passage may be further provided that connects the compression chamber and the expansion chamber.

According to the configuration of (11) above, the compression chamber and the expansion chamber capable of communicating fluids with each other can be realized with a compact configuration.

(12) In some embodiments, in any one of the configurations (1) to (11) above,
The scroll fluid machine,
A spark plug disposed in the expansion chamber,
A power generation device may be configured to output an output torque by generating a high temperature gas by expanding and igniting the high temperature gas by igniting and burning the fluid by the spark plug in the expansion chamber.

According to the configuration of (12) above, the spark plug is arranged in the expansion chamber. In the expansion chamber, a spark plug ignites and burns a fluid containing a combustible mixture to generate a high temperature gas, and the high temperature gas expands to output an output torque. By igniting and burning the fluid by the spark plug in the expansion chamber in this manner, the output can be significantly improved as compared with the case where the fluid simply expands in the expansion chamber.

(13) In some embodiments, in the configuration of (12) above,
The scroll fluid machine,
The fluid introduced into the expansion chamber may be configured to be compressed in the compression chamber.

According to the configuration of (13) above, by supercharging the fluid compressed in the compression chamber into the expansion chamber, a high output configuration can be realized compactly.

(14) In some embodiments, in the configuration of (13) above,
The scroll fluid machine,
A supply path for supplying the fluid to the compression chamber,
And a discharge path for discharging the fluid from the expansion chamber.

According to the configuration of (14) above, the fluid is supplied to the compression chamber via the supply passage, and the fluid is discharged from the expansion chamber via the discharge passage. Therefore, the scroll fluid machine including the compressor and the expander and capable of smoothly supplying and discharging the fluid can be realized with a compact configuration.

According to at least one embodiment of the present invention, it is possible to realize a scroll fluid machine including a compression chamber and an expansion chamber that handles a fluid containing a mixture for power generation, with a compact configuration.

It is a sectional view showing roughly composition of a scroll fluid machine concerning at least one embodiment of the present invention. It is a perspective view which shows roughly the structure of the scroll fluid machine which concerns on one Embodiment. It is an exploded perspective view showing roughly the composition of the scroll fluid machine concerning one embodiment. It is a perspective sectional view showing roughly composition of a scroll fluid machine concerning one embodiment. It is a sectional view showing roughly composition of a scroll fluid machine concerning one embodiment. It is a schematic diagram showing roughly composition of a scroll fluid machine concerning one embodiment. It is a figure which shows roughly the structure of the scroll fluid machine which concerns on one Embodiment.

Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative positions, etc. of the components described as the embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. Absent.
For example, the expressions representing relative or absolute arrangements such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric", or "coaxial" are strict. In addition to representing such an arrangement, it also represents a state of relative displacement, or a state of relative displacement with an angle or distance such that the same function can be obtained.
Further, for example, an expression representing a shape such as a quadrangle or a cylindrical shape does not only represent a shape such as a quadrangle or a cylindrical shape in a geometrically strict sense, but also an uneven portion or A shape including a chamfered portion and the like is also shown.
On the other hand, the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one element are not exclusive expressions excluding the existence of other elements.

FIG. 1 is a sectional view schematically showing a configuration of a scroll fluid machine 1 according to at least one embodiment of the present invention.
As shown in FIG. 1, a scroll fluid machine 1 according to at least one embodiment of the present invention is used to compress or expand a fluid F. For example, the scroll fluid machine 1 is used to compress a mixture of air and fuel, ignite and burn the mixture, expand hot gas, and provide an output torque corresponding to an internal combustion scroll rotary motor. obtain.
The scroll fluid machine 1 includes a spiral first wrap 24 standing on a first surface 22 and a spiral second wrap standing on a second surface 26 opposite to the first surface 22. First fixing including a swirl disc 20 including a wrap 28, and a spiral third wrap 32 standing upright on one surface of the swivel disc 20 facing the first surface 22 and forming a compression chamber 50 together with the first wrap 24. A disk 30 and a second fixed disk 40 including a spiral fourth wrap 42 that stands on one surface of the swivel disk 20 that faces the second surface 26 and that forms an expansion chamber 52 together with the second wrap 28. ing.

The swivel disc 20 is formed by a first wrap 24 formed on the first surface 22 of the swivel disc 20 and a third wrap 32 formed on a fixed disc (first fixed disc 30). Form a scroll compressor for compressing the fluid F, and a second wrap 28 formed on the second surface 26 of the orbiting disc 20 and a fourth wrap formed on a fixed disc (second fixed disc 40). A scroll expander for taking out the energy of the fluid F expanded in the expansion chamber 52 formed by 42 as rotation energy is formed.
The scroll expander introduces a high-pressure working fluid F into a gas pocket formed by meshing spiral wraps 28 and 42 provided on an orbiting scroll (orbiting disc 20) and a fixed scroll (second fixed disc 40). The orbiting scroll is orbited by the energy of the working fluid F at the time of expansion, and the orbiting force of the orbiting scroll is extracted as a rotational force. The extracted rotational force may, for example, be transmitted to the rotating shaft of the generator for the orbiting motion of the orbiting scroll to obtain electric power, or may be used as a power source for another machine such as a pump.
As described above, the first fixed disk 30 and the second fixed disk 40 are sandwiched by the single turning disk 20 having the laps formed on one surface (for example, the front surface) and the other surface (for example, the back surface). The following description will be made on the assumption that the scroll unit 10 has a configuration including a compression chamber and an expansion chamber. The general structure and operating principle for constructing a scroll compressor and a scroll expander are well known and will not be described in detail here.

According to the above-mentioned configuration, the orbiting disc 20 includes the first wrap 24 forming the compression chamber 50 on the first surface 22 thereof, and the expansion chamber 52 is provided on the second surface 26 opposite to the first surface 22. By including the second wrap 28 to be formed, it is possible to arrange the scroll type compression chamber 50 on one side and the scroll type expansion chamber 52 on the other side across the orbiting disc 20. That is, the first wrap 24 for forming the scroll type compression chamber and the second wrap for forming the scroll type expansion chamber 52 are formed on one surface (first surface 22) of the common orbiting disk 20. By providing each on the other surface (second surface 26), the scroll fluid machine 1 including the compressor and the expander can be realized with a compact configuration.
The scroll fluid machine 1 according to the present disclosure may be used as a power source for extracting hot water or heat for heating while generating electric power as a CHP (combined heat and electric power), for example.

FIG. 2 is a perspective view schematically showing the configuration of the scroll fluid machine according to the embodiment. FIG. 3 is an exploded perspective view schematically showing the configuration of the scroll fluid machine according to the embodiment. FIG. 4 is a perspective sectional view schematically showing the configuration of the scroll fluid machine according to the embodiment.
As shown in FIGS. 2 to 4, in some embodiments, the first scroll unit 10A and the second scroll unit 10B in which the first fixed disk 30 and the second fixed disk 40 are combined with the orbiting disk 20 interposed therebetween are combined. May be provided in the turning axis Z direction of the turning disk 20.
That is, in some embodiments, it is possible to expand to a configuration having a plurality of scroll units 10 (two or more stages).

According to the configuration in which the plurality of scroll units 10 are provided in the swivel axis Z direction as described above, the capacity of the expansion chamber 52 or the compression chamber 50 required according to the desired output is not increased in the radial direction. It is possible to realize the scroll fluid machine 1 having a compact configuration, which can be arbitrarily adjusted depending on the number of scroll units 10 provided in the orbiting axis Z direction.

FIG. 5 is a sectional view schematically showing the configuration of the scroll fluid machine according to the embodiment.
As shown in FIG. 5, in some embodiments, the first fixed disk 30 or the second fixed disk 40 of the first scroll unit 10A is the first fixed disk 30 or the second fixed disk 40 of the second scroll unit 10B. May be integrally configured with.

In this way, by integrally configuring the fixed disks (the first fixed disk 30 or the second fixed disk 40) of the first scroll unit 10A and the second scroll unit 10B that are adjacent to each other, the number of parts can be reduced. it can.

In some embodiments, the first scroll unit 10A and the second scroll unit 10B may be configured symmetrically with respect to the joint surface 12 of the first scroll unit 10A and the second scroll unit 10B (FIG. 2 to FIG. 2). (See FIG. 4).
In this case, the respective units may be combined so that the compression chamber and the expansion chamber are arranged in the same order in the swivel axis Z direction toward one side and the other side with the joint surface 12 as a reference. In order to make a symmetrical arrangement based on the joint surface 12, for example, an even number of scroll units 10 may be arranged in the orbiting axis Z direction.
When the fixed disks (the first fixed disk 30 or the second fixed disk 40) of both

units

10A, 10B are integrally formed, the joint surface 12 is in the Z-axis direction of the integrally formed fixed disk. It means the plane passing through the midpoint of the thickness (see FIG. 5).

As described above, according to the configuration in which the first scroll unit 10A and the second scroll unit 10B are symmetrically arranged with respect to the joint surface 12 of each other, the two scroll units 10 are arranged in the direction of the orbiting axis Z. They are arranged symmetrically with respect to the joint surface 12. Therefore, for example, it is possible to realize the scroll fluid machine 1 having a compact configuration in which the scroll fluid machine 1 is balanced with respect to the load caused by the expansion of the compressed fluid F and the orbiting operation of the orbiting disk 20.

In some embodiments, the first scroll unit 10A and the second scroll unit 10B may be combined so that the compression chamber 50 is located closer to the joint surface 12 than the expansion chamber 52 (FIGS. (See FIG. 5).

In this way, according to the configuration in which the compression chamber 50 is arranged closer to the joint surface 12 than the expansion chamber 52, in each scroll unit 10, the compression chamber 50 is provided on the inside with respect to the joint surface 12 and the expansion chamber 52 is on the outside. Are combined so as to be arranged in. As a result, the expansion chamber 52 can be easily accessed from the outside, and thus the expanded fluid can be easily taken out.

In some embodiments, the scroll fluid machine 1 may include, between the first scroll unit 10A and the second scroll unit 10B, the cooling unit 60 including the refrigerant flow passage 62 through which the refrigerant 64 can pass ( (See FIGS. 4 and 5).

As described above, according to the configuration in which the scroll fluid machine 1 includes the cooling unit 60, in the scroll fluid machine 1 including the two pairs of the compressor and the expander that are integrally and compactly combined, the refrigerant is provided between the scroll units 10. A cooling unit 60 including a coolant channel 62 through which 64 can pass is provided. Since the cooling unit 60 is provided between the scroll units 10, two scroll units 10 adjacent to each other can be cooled at the same time. Further, the refrigerant 64 that has recovered the amount of heat by cooling the two scroll units 10 can also be used by taking it out to the outside.
The coolant flow path 62 may be provided in at least one of the first fixed disk 30 and the second fixed disk 40 (see, for example, FIGS. 4 and 5). Further, the cooling unit 60 may include a transportation unit such as a pump for transporting the refrigerant 64.

In some embodiments, the swivel disc 20 is configured to be swivelable relative to the first fixed disc 30 and the second fixed disc 40 by a plurality of support mechanisms 70 arranged at different positions along the circumferential direction. (See FIGS. 2 to 4).

According to the structure in which the swivel disc 20 is supported by the plurality of support mechanisms 70 arranged at different positions in the circumferential direction, the structure for swiveling the swivel disc 20 while preventing its rotation is realized in a compact manner. can do.

In some embodiments, the support mechanism 70 may include a shaft 72 coupled to the swivel disc 20 and extending in the swivel axis Z direction, and a bearing 74 rotatably supporting the shaft 72 (FIGS. (See FIG. 4).

As described above, according to the structure in which the support mechanism 70 includes the shaft 72 and the bearing 74, the swing disk 20 is swingably supported by the bearing 74 via the shaft 72 that is rotatably supported by the bearing 74. You can Further, for example, by using the bearing 74 capable of bearing the load in the radial direction and the thrust direction that acts on the shaft 72, it is possible to realize the smooth turning operation of the turning disk 20.
In some embodiments, the bearing 74 supporting the shaft 72 connected to the swivel disc 20 may be the bearing 74 capable of bearing the load in the radial direction and the thrust direction as described above. Further, the orbiting scroll (orbiting disc 20) of the first scroll unit 10A and the orbiting scroll (orbiting disc 20) of the second scroll unit 10B may be operated with a phase shift of 180 degrees. By doing so, it is possible to reduce the deviation of the vibration and the load due to the turning operation of the turning disk 20 in the direction orthogonal to the turning axis Z direction.

FIG. 6 is a schematic diagram schematically showing the configuration of the scroll fluid machine according to the embodiment.
As shown in FIG. 6, in some embodiments, the swivel disc 20 may have different heights for the first wrap 24 and the second wrap 28.

According to the configuration in which the heights of the first wrap 24 and the second wrap 28 are different as described above, the capacity of the compression chamber 50 formed on the first surface 22 side of the orbiting disc 20 and the capacity of the compression chamber 50 formed on the second surface 26 side. The volume of the expansion chamber 52 to be adjusted can be arbitrarily adjusted with a simple configuration. For example, when the size of the orbiting disk 20 is restricted in the orbiting axis Z direction, the entire scroll fluid machine 1 does not need to change the size in the orbiting axis Z direction, and if necessary, the compression chamber 50 and the expansion chamber 52 The volume ratio of can be arbitrarily changed.
The third wrap 32 that forms the compression chamber with the first wrap 24 and the fourth wrap 42 that forms the expansion chamber with the second wrap 28 also have different heights according to the heights of the wraps that mesh with each other. You may have.

FIG. 7: is a figure which shows schematically the structure of the scroll fluid machine which concerns on one Embodiment.
As shown in FIGS. 5 and 7, in some embodiments, at least one of the first fixed disk 30 and the second fixed disk 40 may include a heat dissipation fin 80 that can contact the outside air. The shape, height, number or arrangement of the radiation fins 80 can be set arbitrarily.

According to the configuration in which at least one of the first fixed disk 30 and the second fixed disk 40 includes the heat dissipation fin 80, the heat dissipation fin 80 can increase the contact area for heat exchange with the outside air. It is possible to improve the cooling efficiency when the scroll fluid machine 1 is used as a power source.

In some embodiments, the scroll fluid machine 1 may further include a communication passage 54 that connects the compression chamber 50 and the expansion chamber 52 (see FIGS. 1, 5, and 6).
The flow of the fluid F through the communication passage 54 may be from the compression chamber 50 to the expansion chamber 52 or from the expansion chamber 52 to the compression chamber 50.

According to the configuration including the communication passage 54 that connects the compression chamber 50 and the expansion chamber 52 in this manner, the compression chamber 50 and the expansion chamber 52 that can communicate fluids with each other can be realized with a compact structure.

In some embodiments, the scroll fluid machine 1 may be configured such that the fluid F introduced into the expansion chamber 52 is compressed in the compression chamber 50 (see FIGS. 1, 3, 5, and 6). ).

With such a configuration, by supercharging the fluid compressed in the compression chamber 50 into the expansion chamber 52, it is possible to realize a compact structure with high output.

In some embodiments, the scroll fluid machine 1 may include a spark plug 82 arranged in the expansion chamber 52 (see FIG. 4). In this case, the compressed fluid F may contain combustible fuel. As the fuel, for example, natural gas (eg, methane gas) may be used.
The spark plug 82 may be configured to ignite the high-pressure fuel at an appropriate timing after the compressed fluid F containing the combustible fuel is introduced into the expansion chamber 52.
The scroll fluid machine 1 according to some embodiments of the present disclosure can thus function as a so-called internal combustion engine (engine) that can ignite and burn or explode fuel, air, or a mixture thereof (air mixture). .. For example, an internal combustion scroll rotation motor may be configured to output output torque by generating high temperature gas by expanding and igniting the high temperature gas by igniting and burning the fluid F by the spark plug 82 in the expansion chamber 52.

As described above, according to the configuration in which the ignition plug 82 is arranged in the expansion chamber, the fluid F including the compressed fluid F (for example, the air-fuel mixture) containing the combustible fuel is ignited and burned in the expansion chamber 52, so that the high temperature is achieved. The output torque can be output by generating gas and expanding the high temperature gas. By igniting and burning the fluid F by the ignition plug 82 in the expansion chamber 52 in this manner, the output can be significantly improved as compared with the case where the compressed fluid F simply expands in the expansion chamber 52.

In some embodiments, the scroll fluid machine 1 may include a supply passage 90 for supplying the fluid F to the compression chamber 50 and a discharge passage 92 for discharging the fluid F from the expansion chamber 52. Good (see FIGS. 1, 5 and 6).

As described above, according to the configuration including the supply passage 90 and the discharge passage 92 for the fluid F, the fluid F is supplied to the compression chamber 50 through the supply passage 90 and the expansion chamber 52 is provided through the discharge passage 92. The fluid F is discharged from the. Therefore, the scroll fluid machine 1 including the compressor and the expander and capable of smoothly supplying and discharging the fluid F can be realized with a compact configuration.

The present invention is not limited to the above-described embodiment, and includes a form in which the above-described embodiment is modified and a form in which these forms are appropriately combined.

DESCRIPTION OF SYMBOLS 1 Scroll fluid machine 10 Scroll unit 10A 1st scroll unit 10B 2nd scroll unit 12 Joint surface 20 Orbiting disk (orbiting scroll)
22 1st surface 24 1st wrap 26 2nd surface 28 2nd wrap 30 1st fixed disk (fixed scroll)
32 3rd wrap 40 2nd fixed disk (fixed scroll)
42 4th lap 50 Compression chamber 52 Expansion chamber 54 Communication path 60 Cooling part 62 Refrigerant flow path 64 Refrigerant 70 Support mechanism 72 Shaft 74 Bearing 80 Radiating fin 82 Spark plug 90 Supply path 92 Discharge path F Fluid (compressed fluid)
Z turning axis direction

Claims

A scroll fluid machine for compressing or expanding a fluid containing a mixture of air and fuel, comprising:
A swirl disk including a spiral first wrap standing on a first surface and a spiral second wrap standing on a second surface opposite to the first surface;
A first fixed disk including a spiral third wrap standing on one surface opposite to the first surface and forming a compression chamber with the first wrap;
A second fixed disk that includes a spiral fourth wrap that is provided upright on one surface facing the second surface and that forms an expansion chamber with the second wrap;
A scroll fluid machine comprising:
The first scroll unit and the second scroll unit in which the first fixed disk and the second fixed disk are combined with the orbiting disk sandwiched therebetween are provided in the orbiting axis direction of the orbiting disk. Scroll fluid machinery.
The first fixed disk or the second fixed disk of the first scroll unit is configured integrally with the first fixed disk or the second fixed disk of the second scroll unit. Scroll fluid machinery.
The first scroll unit and the second scroll unit are configured symmetrically with respect to a joint surface of the first scroll unit and the second scroll unit.
The scroll fluid machine according to claim 2 or 3.
The first scroll unit and the second scroll unit are respectively combined so that the compression chamber is arranged at a position closer to the joint surface than the expansion chamber,
The scroll fluid machine according to claim 4.
Between the first scroll unit and the second scroll unit, a cooling unit including a coolant passage through which a coolant can pass is provided.
The scroll fluid machine according to any one of claims 2 to 5.
7. The swivel disc is configured to be swivelable relative to the first fixed disc and the second fixed disc by a plurality of support mechanisms arranged at different positions along the circumferential direction. The scroll fluid machine according to claim 1.
The support mechanism includes a shaft that is connected to the swivel disc and extends in the swivel axis direction, and a bearing that rotatably supports the shaft.
The scroll fluid machine according to claim 7.
The scroll fluid machine according to any one of claims 1 to 8, wherein a height of the first wrap and a height of the second wrap of the orbiting disc are different from each other.
The scroll fluid machine according to any one of claims 1 to 9, wherein at least one of the first fixed disk and the second fixed disk includes a radiating fin that is capable of coming into contact with outside air.
Further comprising a communication passage communicating the compression chamber and the expansion chamber,
The scroll fluid machine according to any one of claims 1 to 10.
A spark plug disposed in the expansion chamber,
By igniting and burning the fluid by the spark plug in the expansion chamber to generate a high temperature gas and expand the high temperature gas, a power generation device that outputs an output torque is configured.
The scroll fluid machine according to any one of claims 1 to 11.
The fluid introduced into the expansion chamber is configured to be compressed in the compression chamber,
The scroll fluid machine according to claim 12.
A supply path for supplying the fluid to the compression chamber,
The scroll fluid machine according to claim 13, further comprising a discharge path for discharging the fluid from the expansion chamber.