WO2016027576A1 - 圧縮装置 - Google Patents
圧縮装置 Download PDFInfo
- Publication number
- WO2016027576A1 WO2016027576A1 PCT/JP2015/069400 JP2015069400W WO2016027576A1 WO 2016027576 A1 WO2016027576 A1 WO 2016027576A1 JP 2015069400 W JP2015069400 W JP 2015069400W WO 2016027576 A1 WO2016027576 A1 WO 2016027576A1
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- WIPO (PCT)
- Prior art keywords
- compressor
- heat exchanger
- working medium
- compressed gas
- recovery unit
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B11/00—Compression machines, plants or systems, using turbines, e.g. gas turbines
- F25B11/02—Compression machines, plants or systems, using turbines, e.g. gas turbines as expanders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/08—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with working fluid of one cycle heating the fluid in another cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
Definitions
- the present invention relates to a compression device.
- Patent Document 1 discloses a compressor, an evaporator that exchanges heat between the compressed gas discharged from the compressor and a liquid phase working medium, a cooler that cools the gas flowing out of the evaporator, and an evaporator.
- the turbine into which the gas phase working medium that has flowed out flows, the AC generator connected to the turbine, the condenser that condenses the working medium that has flowed out of the turbine, and the liquid phase working medium that has flowed out of the condenser are pumped to the evaporator
- a compressor energy recovery system comprising a circulation pump is disclosed. In this system, the energy of the compressed gas is recovered by an evaporator, and electricity is generated by an AC generator using the energy.
- Patent Document 1 In the system disclosed in Patent Document 1, it is desired to reduce the pressure loss as much as possible in order to set the pressure of the compressed gas discharged from the compressor to a desired value. However, since the pressure loss on the flow path of the compressed gas increases due to the provision of the evaporator, the power of the compressor must be increased in order to ensure the pressure of the compressed gas. As a result, the thermal energy that is effectively recovered by the energy recovery system is reduced. Note that Patent Document 1 does not mention any means for reducing the pressure loss.
- An object of the present invention is to provide a compression device that can achieve both effective recovery of thermal energy of compressed gas and reduction of pressure loss of the compressed gas.
- a compression device includes a compressor that compresses a gas, and a thermal energy recovery unit that recovers thermal energy of the compressed gas discharged from the compressor, and the thermal energy recovery unit includes: A heat exchanger that has an inlet for allowing compressed gas to flow in and heats the working medium by the heat of the compressed gas, an expander that expands the working medium that has flowed out of the heat exchanger, and power connected to the expander A recovery unit; a condenser that condenses the working medium that has flowed out of the expander; and a pump that sends the working medium that has flowed out of the condenser to the heat exchanger, wherein the heat exchanger includes the expander It is arrange
- the compression device includes a compression device main body 100 and a thermal energy recovery unit 200.
- the compressor main body 100 includes a first compressor 102 that compresses a gas (for example, air), a first cooler 104, a second compressor 106 that further compresses the compressed gas flowing out from the first cooler 104, A second cooler 108.
- a gas for example, air
- a second cooler 108 A second cooler 108.
- the first compressor 102 is a screw compressor.
- the first compressor 102 includes a compressor main body portion, a motor portion, and a power transmission portion that transmits the power of the motor portion to the compressor main body.
- the compressor body includes a screw rotor, a housing that houses the screw rotor, and a discharge unit that discharges the compressed gas.
- the screw rotor is formed by a rotor shaft that is a rotating shaft and a screw (compressed body) that rotates together with the rotor shaft.
- the first compressor 102 is arranged in a posture in which the rotor shaft is horizontal.
- the first compressor 102 is not limited to a screw compressor but may be a compressor having a rotating shaft that drives a compressor, that is, a turbo compressor or a scroll compressor.
- the second compressor 106 is a screw compressor.
- the structure of the 2nd compressor 106 is the same as that of the 1st compressor 102, and is provided with a compressor main-body part, a motor part, and the power transmission part which transmits the motive power of a motor part to a compressor main body.
- One motor unit and a power transmission unit may be shared between the first compressor 102 and the second compressor 106.
- the second compressor 106 is arranged in a posture in which the rotor shaft of the screw rotor is horizontal and parallel to the rotor shaft of the first compressor 102.
- the second compressor 106 is not limited to a screw compressor, and may be a turbo compressor or a scroll compressor.
- the first cooler 104 cools the compressed gas discharged from the first compressor 102 and passing through a first heat exchanger 202 described later and before flowing into the second compressor 106.
- the second cooler 108 cools the compressed gas that has been discharged from the second compressor 106 and passed through a second heat exchanger 204 described later and before being supplied to the outside.
- FIG. 1 the illustration of the flow path of the compressed gas between the first cooler 104 and the second compressor 106 and the illustration of the flow path of the compressed gas between the second cooler 108 and the outside are omitted. ing. The same applies to FIGS. 4 and 6 below.
- These coolers 104 and 108 are disposed below the first compressor 102 and the second compressor 106, respectively.
- the compression device main body 100 is disposed on a substantially rectangular first base plate 130.
- the first cooler 104 and the second cooler 108 are directly mounted on the upper surface of the first base plate 130, and the first compressor 102 and the second compressor 106 are connected to the coolers 104 and 108. It is arranged at an upper position, that is, a position spaced upward from the upper surface of the first base plate 130.
- the first base plate 130 in addition to an aspect in which each device is directly placed on the upper surface of the first base plate 130, includes an aspect that is spaced upward from the upper surface of the first base plate 130. Expressed as “place”. The same applies to the second base plate 230 described later.
- the compression apparatus main body 100 is covered with a first cover 140 in a state of being disposed on the first base plate 130.
- a part of the first cover 140 is shown in a broken state.
- the thermal energy recovery unit 200 is a so-called binary system using an organic Rankine cycle, and includes a first heat exchanger 202, a second heat exchanger 204, an oil separator 206, an emergency shut-off valve 208, and an expander 210.
- a power generator 212 connected to the expander 210, a condenser 214, a receiver 216, a pump 222, and a circulation channel 224.
- the circulation flow path 224 connects the first heat exchanger 202 and the second heat exchanger 204, the oil separator 206, the emergency shut-off valve 208, the expander 210, the condenser 214, the receiver 216, and the pump 222 in this order.
- a working medium (an organic fluid having a lower boiling point than water such as R245fa) circulates in the circulation channel 224.
- the circulation channel 224 has a branch channel 226.
- the branch channel 226 branches from a portion of the circulation channel 224 between the pump 222 and the first heat exchanger 202 and is connected to the second heat exchanger 204.
- the first heat exchanger 202 and the second heat exchanger 204 are arranged in parallel with each other.
- the first heat exchanger 202 has an inflow port 202a through which the compressed gas compressed by the first compressor 102 flows.
- the working medium is heated by the heat of the compressed gas flowing in from the inlet 202a. In other words, the compressed gas is cooled by the working medium.
- the first heat exchanger 202 is a so-called fin tube heat exchanger.
- a plate heat exchanger may be used as the first heat exchanger 202. The same applies to the second heat exchanger 204.
- the second heat exchanger 204 has an inlet 204a through which the compressed gas compressed by the second compressor 106 flows.
- the working medium is heated by the heat of the compressed gas flowing from the inflow port 204a. In other words, the compressed gas is cooled by the working medium.
- the oil separator 206 is provided on the downstream side of the first heat exchanger 202 and the second heat exchanger 204, and separates the oil contained in the working medium flowing out from both the heat exchangers 202 and 204.
- the oil is used for lubrication of various parts of the expander 210 and the pump 222.
- the expander 210 is provided on the downstream side of the oil separator 206.
- a positive displacement screw expander is used as the expander 210.
- the expander 210 includes a casing having a rotor chamber formed therein, and a pair of male and female screw rotors rotatably supported in the rotor chamber. The screw rotor rotates as the gas phase working medium flowing into the rotor chamber expands.
- the expander 210 is not limited to a screw expander, and a centrifugal type or a scroll type may be used.
- the generator 212 is connected to the expander 210.
- the generator 212 has a rotating shaft connected to at least one of the pair of screw rotors of the expander 210.
- the generator 212 generates electric power when the rotating shaft rotates with the rotation of the screw rotor.
- the condenser 214 is provided on the downstream side of the expander 210, and condenses (liquefies) the working medium by cooling the working medium with a cooling fluid (cooling water or the like) supplied from the outside.
- the receiver 216 is provided on the downstream side of the condenser 214 and stores the liquid-phase working medium that has flowed out of the condenser 214. As shown in FIGS. 1 and 2, the receiver 216 is substantially H-shaped in plan view. Specifically, the receiver 216 includes a first cylinder part 218 and a second cylinder part 220 arranged in a horizontal plane, and a communication cylinder part 219 that allows the first cylinder part 218 and the second cylinder part 220 to communicate with each other. Have. The receiver 216 may be substantially U-shaped in a plan view by connecting the communicating cylinder part 219 to the axial ends of both the cylinder parts 218 and 220.
- the first cylinder part 218 is provided with an inlet 216 a for allowing the liquid-phase working medium flowing out of the condenser 214 to flow into the first cylinder part 218.
- the first cylinder part 218 is provided with an outlet 216 b for allowing a liquid-phase working medium to flow out from the first cylinder part 218.
- the second cylinder part 220 is provided with a liquid level sensor 221 that detects the liquid level of the working medium. Since the liquid level sensor 221 and the working medium inflow port 216a are separated from each other via the communication tube portion 219, the working medium that has flowed into the first tube portion 218 through the inflow port 216a is in the first tube portion 218. Variation in the detected value of the liquid level sensor 221 due to the fluctuation of the liquid level that occurs when the liquid level collides is suppressed.
- the pump 222 is provided downstream of the receiver 216 (a part of the circulation channel 224 that is downstream of the receiver 216 and upstream of the connection between the circulation channel 224 and the branch channel 226).
- the pump 222 pressurizes the liquid-phase working medium to a predetermined pressure and sends it to the first heat exchanger 202 and the second heat exchanger 204.
- the pump 222 has a suction port 222a through which a liquid-phase working medium flows and an oil supply port 222b through which oil flows.
- An oil supply passage 223 (see FIG. 2) for supplying oil separated from the working medium by the oil separator 206 to the pump 222 is connected to the oil supply port 222b.
- a centrifugal pump having an impeller as a rotor, a gear pump having a rotor composed of a pair of gears, a screw pump, a trochoid pump, or the like is used as the pump 222.
- the thermal energy recovery unit 200 is disposed on a rectangular second base plate 230.
- FIG. 1 shows a state in which the first base plate 130 and the second base plate 230 are separated from each other. However, as shown in FIG. 3, these are actually in contact with each other.
- the first heat exchanger 202 is disposed at one of the two opposing corners located at a portion of the second base plate 230 facing the first base plate 130 (the upper right corner in FIG. 1). .
- the first heat exchanger 202 is arranged such that its inlet 202 a faces the compressed gas discharge port 102 a of the first compressor 102.
- the discharge port 102a of the first compressor 102 is an opening located at the tip of a flow path portion extending downstream from a compression space that houses a screw (compressed body). The same applies to the discharge port 106a of the second compressor 106.
- the opening direction of the inlet 202a of the first heat exchanger 202 (direction perpendicular to the plane including the opening) is substantially parallel to the direction in which the rotor shaft of the first compressor 102 extends.
- the first heat exchanger 202 is disposed at a position spaced upward from the upper surface of the second base plate 230 by a mounting table (not shown).
- the second heat exchanger 204 is disposed on the other of the two opposing corners of the second base plate 230 (the lower right corner in FIG. 1). In plan view, the second heat exchanger 204 is arranged such that its inlet 204 a faces the compressed gas discharge port 106 a of the second compressor 106.
- the opening direction of the inflow port 204a of the second heat exchanger 204 (direction perpendicular to the plane including the opening) is substantially parallel to the direction in which the rotor shaft of the second compressor 106 extends.
- the second heat exchanger 204 is disposed at a position spaced upward from the upper surface of the second base plate 230 by the mounting table 205.
- the oil separator 206 is disposed between the two opposing corners of the second base plate 230. As shown in FIG. 2, the oil separator 206 is arranged at a position spaced upward from the upper surface of the second base plate 230 by the mounting table 207.
- the expander 210 is disposed at a corner (lower left corner in FIG. 1) different from the two opposing corners among the four corners of the second base plate 230. As shown in FIG. 2, the expander 210 is arranged at a position spaced upward from the upper surface of the second base plate 230 by the mounting table 213. The condenser 214 is disposed at a position adjacent to the expander 210.
- the receiver 216 is arranged below the condenser 214 as shown in FIG. Specifically, the inlet 216a of the receiver 216 is disposed below the outlet 214b of the condenser 214 (an opening for allowing the liquid working medium to flow out) in the direction of gravity. Thereby, the working medium that has flowed out of the condenser 214 can be efficiently stored in the receiver 216.
- the inflow port 216a of the receiver 216 may be disposed at a position overlapping the outflow port 214b in the gravity direction as long as the inflow port 216a is disposed below the outflow port 214b of the condenser 214 in the gravity direction.
- the receiver 216 is placed on the mount 217 so as to be spaced apart from the upper surface of the second base plate 230.
- the pump 222 is disposed on the side of the receiver 216. As shown in FIG. 2, the suction port 222a of the pump 222 is disposed at the same height as the outlet 216b of the receiver 216 in the direction of gravity. Therefore, since the suction port 222a of the pump 222 is filled with the liquid working medium, the inflow of gas to the pump 222 is suppressed. In addition, since a portion of the receiver 216 located below the suction port 222a of the pump 222 in the gravity direction (a portion where it is difficult to suck the working medium by the pump 222) is reduced, the working medium stored in the receiver 216 is reduced. The total amount can be reduced.
- the pump 222 is disposed at a position spaced upward from the second base plate 230 by a mounting table (not shown) and with its oil supply port 222 b facing downward.
- the path 223 is connected to the oil supply port 222b in a state of being disposed below the pump 222.
- the thermal energy recovery unit 200 is covered with a second cover 240 shown in FIG. 3 in a state of being disposed on the second base plate 230.
- a state in which a part of the second cover 240 is broken is shown.
- the compression device is provided with a base plate fixing member 330 that fixes the relative positions of the first base plate 130 and the second base plate 230.
- the base plate fixing member 330 includes a flat plate-like fixing plate and fasteners such as bolts that can fasten the fixing plate to both base plates 130 and 230.
- the first base plate 130 and the second base plate 230 are fixed by the base plate fixing member 330 in advance. The displacement of the inlets 202a and 204a of the heat exchangers 202 and 204 with respect to the discharge ports 102a and 106a of the compressors 102 and 106 is suppressed.
- the first cover 140 and the second cover 240 are fixed by the cover fixing member 340 in a state where their relative positions are determined.
- the cover fixing member 340 includes a flat plate-like fixing plate and a fastener such as a bolt that can fasten the fixing plate to the covers 140 and 240.
- a flexible hose 300 having flexibility is used for at least a part of the pipe connecting the inlet 104a of the cooler 104.
- the flexible hose 300 can be bent in a direction perpendicular to the longitudinal direction.
- gas is compressed by the first compressor 102.
- the compressed gas flows into the first heat exchanger 202 through the discharge port 102a of the first compressor 102, the flexible hose 300, and the inlet 202a of the first heat exchanger 202.
- the compressed gas exchanges heat with the working medium in the first heat exchanger 202 (after heating the working medium), and then the outlet 202b of the first heat exchanger 202, the flexible hose 300, and the first cooler. It flows into the inside of the first cooler 104 through the inlet 104 a of 104.
- the compressed gas cooled by the first cooler 104 is further compressed by the second compressor 106. Also in the second compressor 106, the gas temperature rises.
- the compressed gas flows into the second heat exchanger 204 through the discharge port 106a of the second compressor 106, the flexible hose 300, and the inlet 204a of the second heat exchanger 204.
- the compressed gas exchanges heat with the working medium in the second heat exchanger 204 (after heating the working medium), and then the outlet 204b of the second heat exchanger 204, the flexible hose 300, and the second cooler. It flows into the inside of the second cooler 108 through the inlet 108 a of 108.
- the compressed gas cooled by the second cooler 108 is supplied to the outside.
- the expander 210 is driven and electric power is generated in the generator 212.
- the generated power is, for example, a motor for driving the first compressor 102 and the second compressor 106, a controller in the compressor main body 100, various control devices such as a solenoid valve, a pump for supplying oil to gears, etc. To be supplied.
- the generated electric power is consumed in the compressor as regenerative electric power.
- a part of the electric power may be used as a power source for the devices (such as the pump 222 and the control device) of the thermal energy recovery unit 200 itself.
- the working medium that has flowed out of the expander 210 is condensed by the condenser 214 and flows into the receiver 216 located below the condenser 214.
- the liquid-phase working medium flowing out from the receiver 216 flows into the pump 222 and is sent to the first heat exchanger 202 and the second heat exchanger 204 through the circulation flow path 224 and the branch flow path 226 by the pump 222. .
- the working medium circulates in the circulation flow path 224 and the branch flow path 226, so that the generator 212 continues to generate power while the compressor main body 100 is driven.
- the first heat exchanger 202 is disposed at a position closer to the first compressor 102 than the expander 210. Therefore, the first heat exchange from the first compressor 102 is performed. The distance to the vessel 202 is shortened. And since the inflow port 202a of the 1st heat exchanger 202 has faced the 1st compressor 102 side, it is controlling that the piping which connects the 1st compressor 102 and the 1st heat exchanger 202 is bent too much. Is done. The same applies to the second heat exchanger 204 side. Therefore, it is possible to achieve both effective recovery of the thermal energy of the compressed gas by the thermal energy recovery unit 200 and reduction of the pressure loss generated in the compressed gas discharged from the compressors 102 and 106.
- the opening direction of the inflow port 202a of the first heat exchanger 202 is disposed at the opposite corner in a posture that is substantially parallel to the rotor shaft of the first compressor 102. Therefore, bending of the pipe connecting the first compressor 102 and the first heat exchanger 202 is further reduced, so that the pressure loss generated in the compressed gas is further reduced. The same applies to the second heat exchanger 204 side.
- the thermal energy recovery unit 200 can be assembled on the second base plate 230 before the assembly with the compression device body, that is, can be unitized. As a result, the assembling work of the compression device can be easily performed. The same applies to FIG. 4 below.
- the thermal energy recovery unit 200 is provided on a base plate different from the base plate on which the compression device main body 100 is provided, the compression device main body 100 and the thermal energy recovery unit 200 are necessarily manufactured integrally in a factory or the like. There is no need. For this reason, the operation
- the expander 210 is disposed at the corner of the second base plate 230, for example, by providing a work door on the side surface of the second cover 240, the expander 210 can be easily accessed from the outside of the second base plate 230. Can be accessed. Therefore, operations such as maintenance of the expander 210 can be easily performed. Furthermore, the height of the expander 210 can be ensured by mounting the expander 210 on the mounting table 213. As a result, it is easy to lift the expander 210 with a crane, and the work of carrying the expander 210 into and out of the thermal energy recovery unit 200 is facilitated.
- the pump 222 is disposed so as to be spaced upward from the second base plate 230 and the oil supply port 222b faces downward, and the oil supply passage 223 is disposed below the pump 222 in the state where the oil supply port 222b is disposed. It is connected to the. Therefore, the size of the thermal energy recovery unit 200 in the horizontal direction can be suppressed.
- the piping connecting the compression apparatus main body 100 and the thermal energy recovery unit 200 includes a flexible hose 300. Accordingly, the inlets 202a, 204a of the first and second heat exchangers 202, 204 and the inlets 202a, 204a of the first and second compressors 102, 106 are absorbed while absorbing the misalignment between the inlets 202a, 204a of the first and second compressors 102, 106. And the discharge ports 102a and 106a can be reliably connected. The same is true between the first and second heat exchangers 202 and 204 and the first and second coolers 104 and 108.
- FIG. 4 is a diagram showing another example of the compression device.
- the heat exchangers 202 and 204 are omitted from the second base plate 230.
- a part of the circulation flow path 224 where the first heat exchanger 202 is connected is connected to the first cooler 104, and a part where the second heat exchanger 204 is connected is the second.
- cooler 108 Connected to cooler 108.
- a flow path through which the working medium flows and a flow path through which a cooling fluid (not shown) flows are formed, and the compressed gas is cooled by the working medium and the cooling fluid.
- the coolers 104 and 108 also serve as the heat exchangers 202 and 204 of the thermal energy recovery unit 200.
- the compressed gas inlet 104a of the first cooler 104 is disposed so as to face the compressed gas discharge port 102a of the first compressor 102.
- the compressed gas inflow port 108 a of the second cooler 108 is disposed in a posture facing the compressed gas discharge port 106 a of the second compressor 106 in the gravity direction.
- the other structure of the compression apparatus is the same as that of FIG.
- the coolers 104 and 108 are arranged closer to the first compressor 102 and the second compressor 106 than the expander 210, and the compressed gas of the coolers 104 and 108 Since the inflow ports 104a and 108a face the first and second compressors 102 and 106, the pressure loss generated in the compressed gas can be reduced. Furthermore, when the working medium exchanges heat with the compressed gas in the coolers 104 and 108, that is, the coolers 104 and 108 also serve as the heat exchangers 202 and 204 of the thermal energy recovery unit 200, Pressure loss can be further reduced.
- FIG. 5 is a diagram showing still another example of the compression device.
- the first heat exchanger 202 and the second heat exchanger 204 are arranged in series on the circulation flow path 224, and the working medium flowing out from the first heat exchanger 202 is the second heat exchanger 204. Flow into.
- the working medium heated by the first heat exchanger 202 and the second heat exchanger 204 flows into the expander 210 via the oil separator 206 and the emergency shut-off valve 208, and the expander 210 and the generator 212 are driven.
- the other structure of the compression apparatus is the same as that of FIG. In the compression apparatus shown in FIG.
- the first and second heat exchangers 202 and 204 in the parallel structure are connected. There is no need to adjust the distribution amount of the working medium. Also in the compression device of FIG. 4, the coolers 104 and 108 may be connected in series on the circulation channel 224 of the working medium.
- FIG. 6 is a diagram showing still another example of the compression device.
- the compression apparatus main body 100 includes a first bypass passage 81, a first valve member 82, a second bypass passage 83, and a second valve member 84 on the compressed gas passage.
- Other structures are the same as those in FIG.
- the first bypass channel 81 includes a channel portion between the discharge port 102a of the first compressor 102 and the inlet 202a of the first heat exchanger 202, and the outlet 202b and the first cooling of the first heat exchanger 202.
- the flow path portion between the inlets 104a of the vessel 104 is connected.
- the first valve member 82 includes two valves 82a and 82b.
- the valve 82 a is provided in the first bypass flow path 81.
- the valve 82a is normally closed.
- the valve 82 b is a portion downstream of the connection portion between the flow path and the first bypass flow path 81 among the flow paths between the discharge port 102 a of the first compressor 102 and the inlet 202 a of the first heat exchanger 202.
- the valve 82b is normally open. During the driving of the compression device, the flow of the compressed gas to the first heat exchanger 202 is allowed by the first valve member 82 and the flow to the first bypass flow path 81 is
- the second bypass channel 83 includes a channel portion between the discharge port 106a of the second compressor 106 and the inlet 204a of the second heat exchanger 204, the outlet 204b of the second heat exchanger 204, and the second cooling.
- the flow path portion between the inlets 108a of the vessel 108 is connected.
- the second valve member 84 includes two valves 84a and 84b.
- the valve 84 a is provided in the second bypass channel 83.
- the valve 84a is normally closed.
- the valve 84b is a part of the flow path between the discharge port 106a of the second compressor 106 and the inlet 204a of the second heat exchanger 204 that is downstream of the connection portion between the flow path and the second bypass flow path 83.
- Located in. The valve 84b is normally open. During the driving of the compression device, the flow of the compressed gas to the second heat exchanger 204 is allowed by the second valve member 84 and the flow to the second bypass flow path 83 is restricted.
- the flow of the compressed gas discharged from the first compressor 102 to the first heat exchanger 202 is restricted by switching the first valve member 82. Then, the compressed gas flows into the first cooler 104 located on the downstream side of the first heat exchanger 202 through the first bypass flow path 81. Similarly, the second valve member 84 is also switched, the flow of the compressed gas discharged from the second compressor 106 to the second heat exchanger 204 is restricted, and the compressed gas passes through the second bypass passage 83. It flows into the second cooler 108 located on the downstream side of the second heat exchanger 204. Power generation is stopped by stopping the supply of compressed gas to the first heat exchanger 202 and the second heat exchanger 204.
- whether or not an abnormality has occurred in the thermal energy recovery unit 200 depends on the pressure or temperature of the working medium flowing into the expander 210, the rotation speed of the expander 210 or the generator 212, and the power output from the generator 212. Is determined based on at least one of the following frequency and the temperature in the generator 212. Furthermore, when the liquid level in the receiver 216 is less than the set value, a signal indicating a failure of an electronic device such as an inverter or converter attached to the generator 212 is detected by the control unit of the compression device, and Even when an emergency stop is instructed by the operator, it is determined that an abnormality has occurred.
- the thermal energy recovery unit 200 can be quickly stopped when an abnormality occurs in the thermal energy recovery unit 200.
- the equipment can be inspected. Further, the driving of the compression apparatus main body 100 can be continued even when the driving of the thermal energy recovery unit 200 is stopped.
- FIG. 7 is a diagram showing another example of the thermal energy recovery unit 200.
- the expander 210 and the generator 212 are arranged at the approximate center in the width direction (vertical direction in FIG. 7) of the second base plate 230.
- the width direction is a direction orthogonal to the direction in which the thermal energy recovery unit 200 and the compression apparatus main body 100 of FIG. 1 are arranged in a horizontal plane.
- a condenser 214, a receiver 216, and a pump 222 are arranged on both sides in the width direction of the expander 210 and the generator 212.
- Other structures are the same as those in FIG.
- the expander 210 is placed on the mounting table 213, so that the height of the expander 210 is secured, and the thermal energy recovery unit 200 is lifted by a crane. It is possible to carry in and out easily.
- FIG. 8 is a diagram showing another example of the receiver 216.
- the working medium outlet 216 b is provided in the second cylindrical portion 220.
- the liquid level sensor 221 is provided on the opposite side of the second cylindrical portion 220 from the outlet 216b. Even in this case, fluctuations in the detection value of the liquid level sensor 221 due to the fluctuation of the liquid level caused by the working medium flowing into the first cylindrical portion 218 are suppressed.
- the receiver 216 may be arranged such that the first cylinder part 218 and the second cylinder part 220 are arranged vertically along a plane orthogonal to the horizontal plane.
- an inflow port 216 a is provided in the upper part of the first tube part 218, and an outflow port 216 b is provided in the lower part of the second tube part 220.
- the liquid level sensor 221 is provided in the second cylindrical portion 220.
- the liquid working medium is stored in the second cylindrical portion 220 located below, and the outflow port 216b is provided in the second cylindrical portion 220, so that the outflow of gas from the outflow port 216b is suppressed. Is done.
- a concave portion 130 a is provided in a portion of the first base plate 130 where the first base plate 130 and the second base plate 230 face each other, and the concave portion 130 a is provided in the second base plate 230.
- the convex part 230a of the shape which fits may be provided.
- the inlet 202 a of the first heat exchanger 202 faces the compressor main body of the first compressor 102 in a plan view, that is, the opening of the first compressor 102 in the opening direction of the inlet 202 a. If the compressor main body exists, the inflow port 202a does not necessarily have to face the discharge port 102a of the first compressor 102. Even in this case, excessive bending of the pipe connecting the first compressor 102 and the first heat exchanger 202 is suppressed, and pressure loss generated in the compressed gas is reduced. The same applies to the second heat exchanger 204 and the compressor main body of the second compressor 106.
- the compressed gas inlet 104a of the first cooler 104 faces the first compressor 102 in the direction of gravity, that is, the first compressor 102 exists in the opening direction of the inlet 104a. If present, the inflow port 104 a does not necessarily have to face the discharge port 102 a of the first compressor 102. Excessive bending of the pipe connecting the first compressor 102 and the first cooler 104 is suppressed. The same applies between the second cooler 108 and the second compressor 106.
- the suction port 222a of the pump 222 may be disposed below the outflow port 216b of the receiver 216 in the gravity direction.
- the outflow port 216b is arranged at the same height as the suction port 222a of the pump 222 or above the suction port 222a in the direction of gravity, whereby the inflow of gas to the pump 222 is suppressed.
- the oil supply port 222b may be provided on the side of the pump 222. Further, grease may be used to lubricate various parts of the pump 222, and in this case, the oil supply passage 223 is omitted.
- the compression device main body 100 and the thermal energy recovery unit 200 may be connected by a steel pipe having no flexibility instead of the flexible hose 300. .
- the receiver 216 may be omitted when a portion for storing the liquid-phase working medium is provided inside the condenser 214.
- the oil separator 206 is omitted. It's okay.
- an oil-free type expander when oil is used for lubricating a bearing or the like, an oil supply system having an oil pump, an oil tank, a cooler, and the like is separately provided.
- the heat exchanger may be omitted from the second base plate 230. It can.
- the expander 210, the power recovery unit 212, the condenser 214, and the pump 222 are provided on the second base plate 230, thereby constituting a system for recovering thermal energy from the compressed gas. It is possible.
- the first valve member 82 and the second valve member 84 may be formed by a single switching valve.
- a driving device other than the generator may be used as the power recovery unit.
- the technique for reducing the pressure loss of the compressed gas may be applied to a compression device having only one compressor, or may be applied to a compression device having three or more compressors.
- a compression device includes a compressor that compresses a gas, and a thermal energy recovery unit that recovers thermal energy of the compressed gas discharged from the compressor, and the thermal energy recovery unit includes: A heat exchanger that has an inlet for allowing compressed gas to flow in and heats the working medium by the heat of the compressed gas, an expander that expands the working medium that has flowed out of the heat exchanger, and power connected to the expander A recovery unit; a condenser that condenses the working medium that has flowed out of the expander; and a pump that sends the working medium that has flowed out of the condenser to the heat exchanger, wherein the heat exchanger includes the expander It is arrange
- the heat exchanger is disposed closer to the compressor than the expander, so the distance from the compressor to the heat exchanger is shortened. And since the inflow port of the compressed gas of a heat exchanger has faced the compressor side, the bending of piping which connects a compressor and a heat exchanger is also suppressed. Therefore, it is possible to achieve both effective recovery of the thermal energy of the compressed gas by the thermal energy recovery unit and reduction of the pressure loss generated in the compressed gas.
- the expander among the first base plate on which the compressor is disposed and the thermal energy recovery unit, at least the expander, the power recovery unit, the condenser, and the second unit on which the pump is disposed. It is preferable to further comprise a plate.
- the heat exchanger is close to the compressor in order to suppress the pressure loss of the compressed gas.
- various members are densely packed around the compressor, when trying to bring the heat exchanger closer to the compressor, various members of the thermal energy recovery unit and members around the compressor are assembled when the compressor is assembled. May interfere with each other. Therefore, in this aspect, the thermal energy recovery unit is assembled on the second base plate with the relative positions of the members determined. That is, the thermal energy recovery unit is unitized. As a result, at the time of assembling the compressor, the heat exchanger can be brought closer to the compressor while avoiding interference between members of the thermal energy recovery section and members around the compressor.
- the second base plate has a substantially rectangular shape, and the expander is disposed at a corner of the second base plate.
- the compression apparatus further includes a mounting table on which the expander is mounted on the second base plate.
- the expander Since the expander is placed on the mounting table, the height of the expander is secured, and various operations such as maintenance of the expander and attachment to the thermal energy recovery unit are facilitated. Moreover, it becomes easy to lift an expander with a crane, and the work of carrying in and carrying out the expander into the thermal energy recovery unit is facilitated.
- the compression apparatus further includes a base plate fixing member that fixes a relative position between the second base plate and the first base plate.
- the thermal energy recovery unit further includes an oil supply passage for supplying oil to the pump
- the pump has an oil supply port connected to the oil supply passage
- the oil supply port is arranged in such a posture that it is spaced upward from the second base plate and the oil supply port faces downward, and the oil supply passage is connected to the oil supply port in a state of being arranged below the pump. It is preferable.
- the horizontal size of the thermal energy recovery unit can be suppressed.
- a first cover that covers the compressor, a second cover that covers the thermal energy recovery unit, a cover fixing member that fixes a relative position between the second cover and the first cover, It is preferable to further comprise.
- the cover fixing member when the thermal energy recovery unit is attached to the compressor used alone, it is easy to attach the first and second covers to the compressor and the thermal energy recovery unit. .
- a pipe for connecting the inlet of the heat exchanger and the outlet of the compressor is further provided, and the pipe includes a flexible hose having flexibility.
- the inlet and the outlet can be connected while absorbing the displacement between the inlet of the heat exchanger and the outlet of the compressor.
- the thermal energy recovery unit further includes a receiver that stores the working medium that has flowed out of the condenser, and the receiver has an outlet for flowing out the working medium, and the pump Has a suction port for sucking the working medium, and the outlet of the receiver is arranged at the same height as the suction port of the pump or above the suction port in the direction of gravity. Is preferred.
- the pump suction port is filled with the liquid working medium, the inflow of gas to the pump is suppressed.
- the portion of the receiver located below the suction port of the pump (the portion where it is difficult to suck the working medium by the pump) is reduced, the total amount of working medium stored in the receiver can be reduced.
- the receiver has an inlet for allowing the working medium to flow in
- the condenser has an outlet for allowing the working medium to flow out
- the inlet of the receiver includes the inlet It is preferable to be located below in the direction of gravity from the outlet of the condenser.
- the working medium flowing out from the condenser can be efficiently stored in the receiver.
- the receiver has two cylindrical portions arranged in a horizontal plane and having a shape communicating with each other, and one cylindrical portion of the two cylindrical portions is connected to the cylindrical portion.
- a liquid level sensor for detecting the liquid level of the working medium may be provided on the other cylinder of the two cylinders, the inlet for allowing the working medium flowing out of the condenser to flow in; Good.
- the position where the liquid level sensor is provided is separated from the position of the inlet of the working medium, it occurs when the working medium that has flowed into the one cylinder through the inlet collides with the liquid level in the one cylinder. Variation in the detected value of the liquid level sensor due to the fluctuation of the liquid level is suppressed.
- the receiver includes two cylindrical portions that are arranged so as to be spaced apart from each other in the vertical direction and communicate with each other, and the cylindrical portion positioned above the two cylindrical portions is the cylindrical portion
- the cylinder part which has an inflow port for making the working medium which flowed out from the condenser flowed into, and is located below among the two cylinder parts may have the outflow port.
- the liquid working medium is stored in the cylindrical portion located below, and the outflow port is provided in the cylindrical portion, so that the outflow of gas from the outflow port is suppressed.
- the said compressor has the rotating shaft which drives a compression body, and the opening direction of the inflow port of the said heat exchanger becomes substantially parallel to the axial direction of the said rotating shaft. It is preferable that they are arranged in a posture.
- the flow path through which the compressed gas flows includes a bypass flow path that bypasses the heat exchanger, and the flow of the compressed gas toward the heat exchanger is detected when the thermal energy recovery unit is abnormal. While limiting, it is preferable to flow the said compressed gas downstream from the said heat exchanger through the said bypass flow path.
- the drive of the power recovery unit can be stopped quickly, and the compressor can be inspected. Further, the compressor can be continuously driven even when the thermal energy recovery unit is stopped.
- this compression apparatus it is a compressor different from the said compressor, Comprising: The other compressor which further compresses the said compressed gas which flowed out from the said heat exchanger, The compressed gas discharged from the said other compressor And another heat exchanger that heats the working medium by the heat of the compressed gas, and the other heat exchanger has the other compression than the expander. It is preferable that the other inflow port is arranged in a position close to the machine and facing the other compressor side.
- the thermal energy of the compressed gas can be further recovered by the thermal energy recovery unit while effectively reducing the pressure loss generated in the compressed gas.
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Abstract
Description
Claims (15)
- ガスを圧縮する圧縮機と、
前記圧縮機から吐出された圧縮ガスの熱エネルギーを回収する熱エネルギー回収部と、
を備え、
前記熱エネルギー回収部が、
前記圧縮ガスを流入させる流入口を有するとともに当該圧縮ガスの熱により作動媒体を加熱する熱交換器と、
前記熱交換器から流出した作動媒体を膨張させる膨張機と、
前記膨張機に接続された動力回収部と、
前記膨張機から流出した作動媒体を凝縮させる凝縮器と、
前記凝縮器から流出した作動媒体を前記熱交換器へと送るポンプと、
を備え、
前記熱交換器は、前記膨張機よりも前記圧縮機に近い位置でかつ前記流入口が前記圧縮機側を向く姿勢で配置されている、圧縮装置。 - 請求項1に記載の圧縮装置において、
前記圧縮機が配置される第1台板と、
前記熱エネルギー回収部のうち、少なくとも前記膨張機、前記動力回収部、前記凝縮器、及び、前記ポンプが配置される第2台板と、
をさらに備える、圧縮装置。 - 請求項2に記載の圧縮装置において、
前記第2台板が略矩形状であり、
前記膨張機は、前記第2台板の角部に配置されている、圧縮装置。 - 請求項2または3に記載の圧縮装置において、
前記第2台板上に前記膨張機が載置される載置台をさらに備える、圧縮装置。 - 請求項2または3に記載の圧縮装置において、
前記第2台板と前記第1台板との相対位置を固定する台板固定部材をさらに備える、圧縮装置。 - 請求項2または3に記載の圧縮装置において、
前記熱エネルギー回収部は、前記ポンプに油を供給する給油流路をさらに備え、
前記ポンプは、前記給油流路に接続される油供給口を有し、
前記ポンプは、前記第2台板から上方に離間するとともに前記油供給口が下を向く姿勢で配置されており、
前記給油流路は、前記ポンプの下方に配置された状態で前記油供給口に接続されている、圧縮装置。 - 請求項2または3に記載の圧縮装置において、
前記圧縮機を覆う第1カバーと、
前記熱エネルギー回収部を覆う第2カバーと、
前記第2カバーと前記第1カバーとの相対位置を固定するカバー固定部材と、
をさらに備える、圧縮装置。 - 請求項1に記載の圧縮装置において、
前記熱交換器の流入口と前記圧縮機の吐出口とを接続する配管をさらに備え、この配管が可撓性を有するフレキシブルホースを含む、圧縮装置。 - 請求項1に記載の圧縮装置において、
前記熱エネルギー回収部は、前記凝縮器から流出した作動媒体を貯留するレシーバをさらに備え、
前記レシーバは、前記作動媒体を流出させるための流出口を有し、
前記ポンプは、前記作動媒体を吸い込む吸込口を有し、
前記レシーバの前記流出口は、重力方向において、前記ポンプの前記吸込口と同じ高さ、または、前記吸込口よりも上方に配置されている、圧縮装置。 - 請求項9に記載の圧縮装置において、
前記レシーバは、前記作動媒体を流入させるための流入口を有し、
前記凝縮器は、前記作動媒体を流出させるための流出口を有し、
前記レシーバの前記流入口は、前記凝縮器の前記流出口よりも重力方向における下方に位置している、圧縮装置。 - 請求項9又は10に記載の圧縮装置において、
前記レシーバが、水平面内に配置されるとともに互いに連通する形状を有する2つの筒部を有し、
前記2つの筒部のうち一方の筒部は、当該筒部へ前記凝縮器から流出した前記作動媒体を流入させるための流入口を有し、
前記2つの筒部のうち他方の筒部には、前記作動媒体の液面を検出する液面センサが設けられる、圧縮装置。 - 請求項9又は10に記載の圧縮装置において、
前記レシーバが、上下方向に互いに離間するように配置されるとともに互いに連通する形状を有する2つの筒部を有し、
前記2つの筒部のうち上方に位置する筒部は、当該筒部へ前記凝縮器から流出した前記作動媒体を流入させるための流入口を有し、
前記2つの筒部のうち下方に位置する筒部は、前記流出口を有する、圧縮装置。 - 請求項1に記載の圧縮装置において、
前記圧縮機が圧縮体を駆動する回転軸を有し、
前記熱交換器は、当該熱交換器の流入口の開口方向が前記回転軸の軸方向と略平行となる姿勢で配置されている、圧縮装置。 - 請求項1に記載の圧縮装置において、
前記圧縮ガスが流れる流路が、前記熱交換器をバイパスするバイパス流路を備え、
前記熱エネルギー回収部の異常時に、前記熱交換器へ向かう前記圧縮ガスの流れを制限するとともに、前記圧縮ガスを前記バイパス流路を通って前記熱交換器よりも下流へと流す、圧縮装置。 - 請求項1に記載の圧縮装置において、
前記圧縮機とは別の圧縮機であって前記熱交換器から流出した前記圧縮ガスをさらに圧縮する他の圧縮機と、
前記他の圧縮機から吐出された圧縮ガスを流入させる他の流入口を有するとともに当該圧縮ガスの熱により前記作動媒体を加熱する他の熱交換器と、
をさらに備え、
前記他の熱交換器は、前記膨張機よりも前記他の圧縮機に近い位置でかつ前記他の流入口が前記他の圧縮機側を向く姿勢で配置されている、圧縮装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP15833111.6A EP3184759A4 (en) | 2014-08-21 | 2015-07-06 | Compression device |
KR1020177004268A KR101999034B1 (ko) | 2014-08-21 | 2015-07-06 | 압축 장치 |
US15/327,098 US10626754B2 (en) | 2014-08-21 | 2015-07-06 | Compression device |
CN201580044971.9A CN106574519B (zh) | 2014-08-21 | 2015-07-06 | 压缩装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2014168559A JP6242769B2 (ja) | 2014-08-21 | 2014-08-21 | 圧縮装置 |
JP2014-168559 | 2014-08-21 |
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WO2016027576A1 true WO2016027576A1 (ja) | 2016-02-25 |
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PCT/JP2015/069400 WO2016027576A1 (ja) | 2014-08-21 | 2015-07-06 | 圧縮装置 |
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US (1) | US10626754B2 (ja) |
EP (1) | EP3184759A4 (ja) |
JP (1) | JP6242769B2 (ja) |
KR (1) | KR101999034B1 (ja) |
CN (1) | CN106574519B (ja) |
WO (1) | WO2016027576A1 (ja) |
Cited By (1)
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CN110242592A (zh) * | 2018-03-09 | 2019-09-17 | 株式会社丰田自动织机 | 离心压缩机及其制造方法 |
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DE102014204935A1 (de) * | 2014-03-17 | 2015-10-01 | Mahle International Gmbh | Heizkühlmodul |
CZ309107B6 (cs) * | 2019-11-30 | 2022-02-02 | Otakar Ing. Černý | Způsob provádění kompresního cyklu a zubový nebo šroubový kompresor k provádění tohoto způsobu |
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- 2015-07-06 CN CN201580044971.9A patent/CN106574519B/zh not_active Expired - Fee Related
- 2015-07-06 EP EP15833111.6A patent/EP3184759A4/en not_active Withdrawn
- 2015-07-06 WO PCT/JP2015/069400 patent/WO2016027576A1/ja active Application Filing
- 2015-07-06 KR KR1020177004268A patent/KR101999034B1/ko active IP Right Grant
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KR101999034B1 (ko) | 2019-07-10 |
CN106574519B (zh) | 2019-04-26 |
US20170159660A1 (en) | 2017-06-08 |
EP3184759A4 (en) | 2018-01-24 |
JP2016044583A (ja) | 2016-04-04 |
US10626754B2 (en) | 2020-04-21 |
CN106574519A (zh) | 2017-04-19 |
EP3184759A1 (en) | 2017-06-28 |
KR20170032407A (ko) | 2017-03-22 |
JP6242769B2 (ja) | 2017-12-06 |
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