WO2019087952A1 - Four industriel - Google Patents

Four industriel Download PDF

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Publication number
WO2019087952A1
WO2019087952A1 PCT/JP2018/039815 JP2018039815W WO2019087952A1 WO 2019087952 A1 WO2019087952 A1 WO 2019087952A1 JP 2018039815 W JP2018039815 W JP 2018039815W WO 2019087952 A1 WO2019087952 A1 WO 2019087952A1
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WO
WIPO (PCT)
Prior art keywords
sound wave
pipe
input loop
conversion unit
inputting
Prior art date
Application number
PCT/JP2018/039815
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English (en)
Japanese (ja)
Inventor
雄一 大野
内田　和秀
卓哉 布施
基紘 白井
大輔 加藤
秀和 坂齊
Original Assignee
株式会社デンソー
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Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2019087952A1 publication Critical patent/WO2019087952A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

Definitions

  • the present disclosure relates to an industrial furnace that generates cold heat or electric power from waste heat generated in a year-round furnace facility.
  • Patent Document 1 proposes a cooling system that generates cold heat using exhaust heat of an exhaust source.
  • the cold generated by the cooling system is used, for example, for air conditioning.
  • waste heat is always discharged from the furnace facility in the furnace facility that operates throughout the year. Therefore, it is desirable to effectively use waste heat regardless of time.
  • this indication aims at providing an industrial furnace which can raise the effective use effect of waste heat regardless of time.
  • the industrial furnace generates exhaust gas temperature passing through the exhaust pipe for passing the waste heat generated in the year-round furnace facility and generates a temperature gradient through the exhaust pipe.
  • the first conversion unit for generating a sound wave by thermoacoustic self-excited vibration
  • the connection pipe for passing the sound wave generated by the first conversion unit, and any one of cold heat and electric power from the sound wave passing through the connection pipe
  • a second conversion unit that generates both.
  • the first conversion unit is configured to generate a sound wave by thermoacoustic self-excited vibration from waste heat of the exhaust pipe, cold heat or electric power can be generated from the waste heat throughout the year. Therefore, in an industrial furnace equipped with an exhaust pipe, the effective utilization effect of waste heat can be enhanced regardless of the time.
  • the drawing is It is a figure showing an industrial furnace concerning a 1st embodiment. It is a figure showing an industrial furnace concerning a 2nd embodiment. It is a figure showing an industrial furnace concerning a 3rd embodiment. It is a figure showing the modification concerning a 3rd embodiment. It is a figure showing the modification concerning a 3rd embodiment. It is a figure showing the modification concerning a 3rd embodiment. It is a figure showing an industrial furnace concerning a 4th embodiment. It is a figure showing an industrial furnace concerning a 5th embodiment. It is a figure showing an industrial furnace concerning a 6th embodiment.
  • the industrial furnace according to the present embodiment is a facility equipped with furnace equipment for heating in the process of manufacturing a product.
  • the industrial furnace 1 includes a furnace facility 100, exhaust pipes 101, 102, 103, a first conversion unit 200, a connection pipe 300, and a second conversion unit 400.
  • the furnace facility 100 is an industrial facility that operates year-round.
  • the furnace facility 100 is configured as a facility that brazes a heat exchanger, for example.
  • the furnace facility 100 includes a degreasing facility 104, a binder removal facility 105, air-breaking facilities 106 and 107, a brazing facility 108, a cooling cooler 109, and a cooling facility 110.
  • Each of the facilities 104 to 110 is a general facility for performing brazing.
  • Each facility 104-110 is configured to complete brazing of each part while introducing and moving the product.
  • Each of the facilities 104 to 110 is equipped with a facility for heating according to the process.
  • exhaust pipes 101 to 103 are connected to the degreasing facility 104, the binder removal facility 105, and the air-breaking facility 107, respectively, through which waste heat generated in the product manufacturing process is passed.
  • the waste heat is discharged from the industrial furnace 1 in a state of being contained in gas or liquid.
  • the heated gas is released to the atmosphere.
  • the exhaust pipes 101 to 103 always discharge waste heat, for example, around 300 ° C.
  • waste heat of different temperatures may be discharged to the exhaust pipes 101 to 103, respectively.
  • the first conversion unit 200, the connection pipe 300, and the second conversion unit 400 constitute a thermoacoustic engine.
  • the first conversion unit 200, the connection pipe 300, and the second conversion unit 400 constitute a thermoacoustic refrigerator.
  • the first conversion unit 200 is an apparatus to which waste heat energy is input from the outside.
  • the second conversion unit 400 is a device that outputs cold energy to the outside.
  • the first conversion unit 200 receives waste heat passing through the exhaust pipes 101, 102, and 103 of the furnace facility 100 to generate a temperature gradient, thereby generating a sound wave by thermoacoustic self-excited vibration. That is, the first conversion unit 200 has a function of converting waste heat into sound waves.
  • the waste heat of the exhaust pipe 101 connected to the degreasing facility 104 is used.
  • the first conversion unit 200 includes an output loop pipe 201 and a motor 202.
  • the output loop pipe 201 is an annular pipe that is connected to the connection pipe 300 and outputs the generated sound wave to the connection pipe 300.
  • the prime mover 202 can convert waste heat into sound waves.
  • the prime mover 202 includes a high temperature side heat exchanger 203, a heat accumulator 204, and a low temperature side heat exchanger 205.
  • the prime mover 202 is disposed in the middle of the output loop pipe 201 along the longitudinal direction.
  • the heat accumulator 204 is sandwiched between the high temperature side heat exchanger 203 and the low temperature side heat exchanger 205. That is, the high temperature side heat exchanger 203 is connected to one end side of the heat accumulator 204, and the low temperature side heat exchanger 205 is connected to the other end side of the heat accumulator 204.
  • the high temperature side heat exchanger 203 is connected to the exhaust pipe 101 installed in the degreasing facility 104 of the furnace facility 100. Thereby, the high temperature side heat exchanger 403 inputs waste heat passing through the exhaust pipe 101.
  • the heat storage unit 204 generates a temperature gradient.
  • the heat accumulator 204 is formed with a large number of flow channels having a diameter equal to or less than the temperature boundary layer thickness.
  • a structure provided with fine flow paths such as a ceramic honeycomb, or a structure obtained by laminating fine metal mesh such as a stainless steel mesh can be used.
  • the low temperature side heat exchanger 205 is configured to maintain the low temperature by heat dissipation naturally or by circulating cooling water.
  • connection pipe 300 is a pipe for transmitting the sound wave generated by the first conversion unit 200 to the second conversion unit 400. Since the connection piping 300 can be arbitrarily configured in length, shape, and the like, the degree of freedom in layout when the first conversion unit 200 and the second conversion unit 400 are installed in the furnace facility 100 can be enhanced.
  • the second conversion unit 400 generates cold from the sound wave passing through the connection pipe 300. That is, the second conversion unit 400 has a function of converting sound waves into cold energy.
  • the second conversion unit 400 includes an input loop pipe 401 and a refrigerator 402.
  • the input loop pipe 401 is an annular pipe that is connected to the connection pipe 300 and that inputs sound waves from the connection pipe 300.
  • the refrigerator 402 can convert the sound waves input through the pipes 201, 300, and 401 into cold energy.
  • the refrigerator 402 includes a high temperature side heat exchanger 403, a heat accumulator 404, and a low temperature side heat exchanger 405.
  • the high temperature side heat exchanger 403, the heat accumulator 404, and the low temperature side heat exchanger 405 are disposed along the longitudinal direction in the middle of the input loop piping 401.
  • the high temperature side heat exchanger 403 is connected to one end side of the heat accumulator 404, and the low temperature side heat exchanger 405 is connected to the other end side of the heat accumulator 404.
  • the configuration of the heat storage unit 404 is the same as the heat storage unit 204 of the first conversion unit 200.
  • the high temperature side heat exchanger 403 and the low temperature side heat exchanger 405 are configured to maintain a predetermined temperature by natural heat dissipation or by circulating cooling water.
  • the output loop piping 201, the connection piping 300, and the input loop piping 401 constitute a sealed space.
  • a cylindrical stainless steel pipe can be used as each of the pipes 201, 300, and 401.
  • each of the pipes 201, 300, 401 encloses the working fluid in the internal space.
  • Each of the pipes 201, 300, 401 can transmit acoustic energy of a sound wave via the working fluid.
  • the working fluid one or more types of gas or a mixture of gas and a liquid such as water can be used.
  • the gas for example, low molecular weight inert gas such as helium, nitrogen, argon or the like or air can be used.
  • connection pipe 300 constitutes a resonance pipe. That is, the thermoacoustic refrigerator is configured as a double loop type in which the output loop piping 201 for the thermoacoustic engine and the input loop piping 401 for the thermoacoustic refrigerator are connected by the connection piping 300.
  • the above is the configuration of the industrial furnace 1.
  • waste heat in the industrial furnace 1 As mentioned above, the furnace installation 100 of the industrial furnace 1 operates year-round. Along with this, waste heat is always discharged from the exhaust pipe 101. That is, waste heat is constantly input to the high temperature side heat exchanger 203 of the first conversion unit 200. Thereby, a temperature gradient is formed in the heat storage unit 204 connected to the high temperature side heat exchanger 203.
  • thermoacoustic self-excited vibrations are generated. That is, in the heat accumulator 204, conversion from waste heat to sound waves is performed.
  • the sound wave generated by the first conversion unit 200 is transmitted from the output loop piping 201 to the input loop piping 401 of the second conversion unit 400 via the connection piping 300.
  • the sound waves generated by the first conversion unit 200 are transmitted to generate a temperature gradient at both ends.
  • the low temperature side heat exchange 405 side is lower in temperature than the high temperature side heat exchanger 403 side. Thereby, in the thermal storage device 404, conversion from sound waves to heat is performed. That is, cold is generated.
  • the refrigerator 402 As long as the waste heat input to the first conversion unit 200 is not stopped, throughout the year, the refrigerator 402 generates a temperature gradient by generating a temperature gradient by inputting an acoustic wave passing through the input loop piping 401. As described above, since cold heat can be generated from waste heat, cold heat can be effectively used for cooling and cooling processes and the like.
  • the first conversion unit 200 installed in the industrial furnace 1 is configured to generate a sound wave from thermoacoustic self-excited vibration from the waste heat of the exhaust pipe 101.
  • cold heat can be generated from waste heat throughout the year. That is, the thermoacoustic refrigerator can be driven by the waste heat discharged to the outside. Therefore, in the industrial furnace provided with the exhaust pipe 101, the effective utilization effect of the waste heat can be enhanced regardless of the time.
  • the second conversion unit 400 is configured as a generator 406.
  • the generator 406 is connected to the end of the connection pipe 300.
  • the generator 406 is configured to receive a sound wave from the connection pipe 300 and generate power from the vibration of the sound wave.
  • the first conversion unit 200, the connection pipe 300, and the generator 406 constitute a thermoacoustic generator.
  • a linear type that converts an oscillating flow of sound waves to an electromotive force of a coil or an impulse turbine type that converts an oscillating flow of sound waves to a rotational force in one direction can be used.
  • the second conversion unit 400 is configured to include both the refrigerator 402 and the generator 406.
  • the generator 406 is disposed in the middle of the connection pipe 300.
  • the generator 406 includes piping through which the sound wave passes, a vibrator that can vibrate in the sound wave transmission direction, and a coil disposed around the vibrator.
  • the generator 406 generates an electric power by inputting a sound wave from the connection pipe 300 and vibrating the vibrator. Although a part of the energy of the sound wave is converted into the vibration of the vibrator, a part of the sound wave that does not contribute to the vibration of the vibrator passes through the generator 406.
  • the refrigerator 402 is disposed in the middle of the input loop pipe 401. Therefore, the refrigerator 402 receives an acoustic wave passing through the input loop pipe 401 to generate cold heat.
  • the generator 406 generates electric power from part of the sound wave passing through the connection pipe 300, and the refrigerator 402 generates cold from the sound wave not converted to electric power by the generator 406.
  • both cold energy and electric power can be generated from waste heat.
  • cold heat and power can be used properly according to the demand for use. That is, the amount of power to be generated and the amount of cold energy can be made variable.
  • the generator 406 may be disposed in the middle of the input loop piping 401.
  • the generator 406 generates power from the sound waves passing through the input loop tubing 401.
  • the refrigerator 402 generates cold from the sound waves that do not contribute to the power generation of the generator 406 among the sound waves passing through the input loop piping 401.
  • the generator 406 may be disposed in the middle of the output loop pipe 201.
  • the generator 406 generates power from the sound waves passing through the output loop tubing 201.
  • sound waves that do not contribute to the power generation of the generator 406 are input to the refrigerator 402 via the connection pipe 300 and the input loop pipe 401.
  • connection piping 300 contains branching part 301 which branched from the connection piping 300 concerned.
  • the generator 406 is connected to the end of the branch unit 301.
  • the generator 406 generates power from the sound wave passing through the branch portion 301.
  • the furnace equipment 100 includes a ventilation pipe 111 connected to the cooling equipment 110 and a blower 112 disposed in the ventilation pipe 111.
  • the cooling facility 110 is a facility for performing a cooling process for cooling a product in the manufacturing process.
  • the first conversion unit 200 includes a plurality of prime movers 202.
  • the first conversion unit 200 includes three prime movers 202 corresponding to the three exhaust pipes 101 to 103, respectively.
  • Each high temperature side heat exchanger 203 of each motor 202 is connected to each exhaust pipe 101-103.
  • the three prime movers 202 are connected in series by being disposed in the middle of the input loop piping 401. According to this, since each prime mover 202 oscillates at a low temperature, it is possible to increase the amount of heat input when the temperature of the waste heat is high. Specifically, the heat amount corresponding to the temperature difference between the temperature of the waste heat and the operating temperature of the prime mover 202 is input from the high temperature side heat exchangers 203 of the prime movers 202 to the thermoacoustic engine. Since the operating temperature of each motor 202 can be lowered by connecting the plurality of motors 202 in series, the amount of heat input to the thermoacoustic device can be increased. As a result, there is an advantage that cold energy and electric energy can be increased.
  • the refrigerator 402 of the second conversion unit 400 is connected to the vent pipe 111 of the cooling device 110.
  • the low temperature side heat exchanger 405 of the refrigerator 402 is connected so as to be able to exchange heat with the gas passing through the vent pipe 111.
  • the low temperature side heat exchanger 405 is configured such that the gas passing through the vent pipe 111 can exchange heat with the fins. Thereby, the gas passing through the ventilation pipe 111 can be cooled to the outside air temperature or less.
  • the furnace installation 100 includes a private room 500.
  • the private room 500 is a space surrounded by walls, such as a meeting room, for example.
  • the low temperature side heat exchanger 405 of the refrigerator 402 of the second conversion unit 400 is configured to be able to supply cold to the individual chamber 500.
  • the furnace installation 100 includes a heater 113 for heating.
  • the heater 113 is one of the equipment for performing heating.
  • the heater 113 is provided, for example, in the degreasing facility 104 and the binder removal facility 105.
  • the generator 406 also includes an electric wire 407 connected to the heater 113. Therefore, the generator 406 heats the heater 113 by supplying power to the heater 113 via the electric wire 407.
  • the heater 113 can be heated by the power generated from the waste heat, the operating power of the furnace facility 100 can be reduced.
  • the configuration of the industrial furnace 1 shown in each of the above embodiments is an example, and is not limited to the configuration described above, and may be another configuration that can realize the present disclosure.
  • the modification of the said embodiment is described.
  • the industrial furnace 1 may be any facility provided with the exhaust pipes 101 to 103, and the furnace facility 100 may be configured as a facility other than the brazing apparatus.
  • the output loop piping 201 may be connected in parallel to the connection piping 300, and the motor 202 may be provided in each output loop piping 201.
  • the input loop piping 401 may be connected in parallel to the connection piping 300, and the refrigerator 402 may be provided in each input loop piping 401. That is, the motor 202 and the refrigerator 402 may be provided in parallel.
  • the generator 406 may be provided in all the output loop piping 201 and the input loop piping 401, or may be provided in a specific output loop piping 201 or the input loop piping 401. Since the refrigerator 402 and the generator 406 can be installed in each of the exhaust pipes 101 to 103, there is an advantage that the degree of freedom in installing the thermoacoustic engine in the furnace facility 100 is increased.
  • the fourth to fifth embodiments can be combined with the third embodiment.
  • the fourth to sixth embodiments may be combined with each other.
  • the generator 406 may be provided in the middle of the connection piping 300 in the fourth and fifth embodiments, or the generator 406 may be provided in the output loop piping 201 and the input loop piping 401 as in the third embodiment. Also good.
  • the input loop piping 401 may be configured in parallel, or one low temperature side heat exchanger 405 may be connected to both the trachea 111 and the individual chamber 500 through Also good.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne un four industriel qui comprend: des tuyaux d'échappement (101, 102, 103) à travers lesquels passe la chaleur perdue générée dans un équipement de four (100) fonctionnant durant toute l'année; une première unité de conversion (200) dans laquelle la chaleur perdue traversant les tuyaux d'échappement est admise, générant un gradient de température et générant ainsi des ondes sonores dues à des oscillations auto-induites thermoacoustiques; une tuyauterie de connexion (300) à travers laquelle passe les ondes sonores générées dans la première unité de conversion; et une seconde unité de conversion (400) qui génère de l'énergie froide et/ou de l'électricité à partir des ondes sonores passant à travers la tuyauterie de connexion.
PCT/JP2018/039815 2017-11-02 2018-10-26 Four industriel WO2019087952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017212496A JP2019086176A (ja) 2017-11-02 2017-11-02 工業炉
JP2017-212496 2017-11-02

Publications (1)

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WO2019087952A1 true WO2019087952A1 (fr) 2019-05-09

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11223417A (ja) * 1998-02-04 1999-08-17 Sumitomo Metal Ind Ltd 製鉄プロセスから発生する低温排熱の回収方法
JP2001324242A (ja) * 2000-05-15 2001-11-22 Shokuhin Sangyo Center 食品の加熱加工処理装置
JP2011208507A (ja) * 2010-03-29 2011-10-20 Jfe Steel Corp 設備高温部の排熱からのエネルギー回収方法
JP2013050087A (ja) * 2011-08-31 2013-03-14 Isuzu Motors Ltd 熱音響機関用熱交換器
JP2013071061A (ja) * 2011-09-28 2013-04-22 Jfe Steel Corp 膜ろ過モジュールの透過流量増加方法
JP2014222128A (ja) * 2013-05-14 2014-11-27 Ｊｆｅスチール株式会社 空気圧縮機の吸気冷却装置および冷却方法
JP2016080310A (ja) * 2014-10-21 2016-05-16 株式会社デンソー 冷却システム
JP2016211517A (ja) * 2015-05-13 2016-12-15 日本碍子株式会社 水回収装置
JP2017106699A (ja) * 2015-12-11 2017-06-15 日本特殊陶業株式会社 熱音響機関
JP2018123982A (ja) * 2017-01-30 2018-08-09 大阪瓦斯株式会社 蒸気発生装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11223417A (ja) * 1998-02-04 1999-08-17 Sumitomo Metal Ind Ltd 製鉄プロセスから発生する低温排熱の回収方法
JP2001324242A (ja) * 2000-05-15 2001-11-22 Shokuhin Sangyo Center 食品の加熱加工処理装置
JP2011208507A (ja) * 2010-03-29 2011-10-20 Jfe Steel Corp 設備高温部の排熱からのエネルギー回収方法
JP2013050087A (ja) * 2011-08-31 2013-03-14 Isuzu Motors Ltd 熱音響機関用熱交換器
JP2013071061A (ja) * 2011-09-28 2013-04-22 Jfe Steel Corp 膜ろ過モジュールの透過流量増加方法
JP2014222128A (ja) * 2013-05-14 2014-11-27 Ｊｆｅスチール株式会社 空気圧縮機の吸気冷却装置および冷却方法
JP2016080310A (ja) * 2014-10-21 2016-05-16 株式会社デンソー 冷却システム
JP2016211517A (ja) * 2015-05-13 2016-12-15 日本碍子株式会社 水回収装置
JP2017106699A (ja) * 2015-12-11 2017-06-15 日本特殊陶業株式会社 熱音響機関
JP2018123982A (ja) * 2017-01-30 2018-08-09 大阪瓦斯株式会社 蒸気発生装置

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