WO2021100639A1 - Dispositif de séchage sous vide - Google Patents

Dispositif de séchage sous vide Download PDF

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Publication number
WO2021100639A1
WO2021100639A1 PCT/JP2020/042548 JP2020042548W WO2021100639A1 WO 2021100639 A1 WO2021100639 A1 WO 2021100639A1 JP 2020042548 W JP2020042548 W JP 2020042548W WO 2021100639 A1 WO2021100639 A1 WO 2021100639A1
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WO
WIPO (PCT)
Prior art keywords
vacuum drying
vacuum
container
container body
water
Prior art date
Application number
PCT/JP2020/042548
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English (en)
Japanese (ja)
Inventor
高橋　茂吉
Original Assignee
株式会社アサヒテクノ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社アサヒテクノ filed Critical 株式会社アサヒテクノ
Priority to KR1020227011471A priority Critical patent/KR20220055492A/ko
Publication of WO2021100639A1 publication Critical patent/WO2021100639A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers

Definitions

  • the present invention relates to a vacuum drying device.
  • the drying technology using a vacuum is roughly classified into a technology using an oil type vacuum pump, a freeze-drying method, and a technology using a blower pump. Drying using an oil-type vacuum pump requires complete vaporization in a high vacuum, and under that condition, it is necessary to heat and vaporize the object, but the vaporization temperature varies depending on the degree of vacuum, for example, 40. After heating to about 70 ° C., it is completely vaporized.
  • high-frequency vacuum drying which heats to 35 to 50 ° C at a high frequency of 30 to 100 KW and then vacuum vaporizes and dries
  • the freeze-drying method is a technique for freezing foods and then placing them in a vacuum to sublimate (dry) water, which has the effect of suppressing the action of enzymes and microorganisms, and has a pressure of 5 to 1 atm.
  • Patent Document 1 a method for producing a spice with reduced bacteria is proposed.
  • the method for producing the spice is to put the raw spice in an airtight container, reduce the pressure inside the container to 2 to 20 kPa or less with absolute pressure, introduce steam at 80 to 140 ° C, and steam in 5 to 120 seconds. After sterilization, the inside of the container is vacuum-dried at an absolute pressure until it reaches 5 to 20 kPa, and further, air-tight drying is performed at a temperature of room temperature to 80 ° C. for 15 to 300 minutes. Further, Patent Document 2 proposes a method for producing a snack food.
  • the method for producing a snack food is to blanch the food piece in a solution containing one or more enzymes to coat the surface of multiple cut or formed food pieces, and then blanch any enzyme on the surface of the food piece.
  • the food pieces are blanched for a sufficient amount of time to activate, after which the food pieces have an initial water content, the initial water content of which is approximately 0.5-10% by weight of the final water content. It reduces the amount.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to vacuum-dry an object in a short time and reliably.
  • the invention according to claim 1 explodes the water content and generates a shock wave by causing cavitation with respect to the water content contained in the innumerable cells constituting the object.
  • a vacuum drying container in which the object can be taken in and out The vacuum pump, which is connected to the vacuum drying container and vacuum-sucks the inside of the vacuum drying container at room temperature,
  • An air inflow valve that is connected to the vacuum drying container and is configured to be openable and closable to send air into the vacuum drying container. It is equipped with a timer control unit that controls the opening and closing operation of the air inflow valve by a timer.
  • the vacuum drying container has a container body formed in a tubular shape, and a plurality of magnetrons that irradiate the object housed in the container body with electromagnetic waves.
  • the timer control unit controls the opening / closing operation of the air inflow valve at a preset timing while the vacuum pump is performing vacuum suction inside the vacuum drying container.
  • the invention according to claim 2 is the vacuum drying apparatus according to claim 1.
  • a tubular suction portion that communicates the inside and the outside of the container body and the air inflow valve are integrally provided on the cylinder wall of the container body in the vacuum drying container.
  • the air inflow valve is a solenoid valve for sending air into the inside of the container body.
  • a suction pipe extending from the vacuum pump is connected to the suction portion.
  • the timer control unit is communicably connected to the air inflow valve, which is a solenoid valve.
  • the invention according to claim 3 is the vacuum drying apparatus according to claim 2.
  • the vacuum pump is one
  • the suction pipe is branched by the number of the plurality of vacuum drying containers, and is connected to each of the suction portions in the container body.
  • the object contained in the vacuum drying container can be vacuum dried reliably in a short time.
  • reference numeral 1 indicates a vacuum drying device.
  • the vacuum drying device 1 is for vacuum drying (lowering the water content ratio) the object 10 containing water. Then, the vacuum drying container 2 into which the object 10 can be taken in and out, the vacuum pump 3 connected to the vacuum drying container 2, the air inflow valve 4 provided in the vacuum drying container 2, and the air inflow valve 4 are connected.
  • the timer control unit 5 and the electromagnetic wave generation units 6 and 7 that irradiate the object 10 with an electromagnetic wave are provided.
  • the vacuum drying container 2 has a container body 20 formed in a tubular shape (cylindrical shape in this embodiment).
  • a tubular suction portion 20a that communicates the inside and the outside of the container body 20 is integrally provided on the cylinder wall of the container body 20, and a suction pipe 3a, which will be described later, is connected to the suction portion 20a.
  • a support portion 20b on which the object 10 is placed and supported is integrally provided inside the container body 20.
  • Both ends of the container body 20 in the length direction are open, and one of the openings can be used as an inlet / outlet port for the object 10.
  • a first flange 20c is integrally provided at one end in the length direction of the container body 20, and a second flange 20d is integrally provided at the other end in the length direction.
  • the opening on the one end side in the length direction of the container body 20 can be closed by the first lid 21 set to have a diameter substantially equal to that of the first flange 20c, and the opening on the other end side in the length direction is the second flange 20d. It can be closed by a second lid 22 set to have substantially the same diameter.
  • the first flange 20c and the first lid 21, the second flange 20d and the second lid 22 are firmly connected by a plurality of bolts and nuts.
  • the vacuum pump 3 is a water-sealed Elmo type vacuum pump.
  • the water-sealed Elmo type vacuum pump has a fan built in the casing, and the casing is provided with a suction port and a discharge port.
  • the cylindrical fan is incorporated with its fan center eccentric with respect to the casing center by about 20 to 30 mm with respect to the cylindrical casing, and the suction pipe 3a is connected to the suction port. Further, the suction pipe 3a is connected to the suction portion 20a of the container body 20.
  • the air inflow valve 4 is an electromagnetic valve (also referred to as an electronic valve) for sending air into the container body 20, and is integrally provided on the cylinder wall of the container body 20.
  • a tubular inflow port that communicates the inside and the outside of the container body 20 to allow air to flow in, and a valve body that opens and closes the inflow port are provided.
  • the timer control unit 5 is communicably connected to the air inflow valve 4, and can transmit a control signal for controlling the opening / closing operation of the valve body in the air inflow valve 4 at a preset timing.
  • the timing for controlling the opening / closing operation of the valve body can be set to various types of patterns.
  • the valve body is operated to open the inflow port when a predetermined time elapses.
  • a pattern is adopted in which the valve body is operated to close the inflow port when a predetermined time elapses.
  • the present invention is not limited to this, and other patterns may be used.
  • the electromagnetic wave generating units 6 and 7 include a first electromagnetic wave generating unit 6 attached to the first lid 21 and a second electromagnetic wave generating unit 7 attached to the second lid 22. Further, these electromagnetic wave generating units 6 and 7 have irradiation units 6a and 7a for irradiating electromagnetic waves. As the electromagnetic wave generating units 6 and 7 in the present embodiment, a magnetron that irradiates microwaves as electromagnetic waves is adopted. In order to attach the electromagnetic wave generating portions 6 and 7 to the first lid 21 and the second lid 22, the first lid 21 and the second lid 22 are formed with openings into which the irradiation portions 6a and 7a are fitted. To do.
  • the irradiation portions 6a and 7a are joined to the first lid 21 and the second lid 22 by welding or the like, and shielding means for preventing electromagnetic waves from leaking to the outside is appropriately provided at the jointed portion. It is assumed that A wire mesh (shielding means) is provided on the container body 20 side of the air inflow valve 4 on the container body 20 side to prevent electromagnetic waves (microwaves) from leaking to the outside and to allow air to flow in from the outside. It may be provided.
  • the water-sealed Elmo type vacuum pump 3 was connected to the vacuum drying container 2 in which the object 10 could be taken in and out, and the circulating water in the cooling water tank was connected to the vacuum pump 3 via the circulation water channel, vacuum drying was performed.
  • the object 10 is put into the inside of the container 2, and the inside of the vacuum drying container 2 is vacuum-dried at room temperature by driving the vacuum pump 3, so that the object 10 is vacuum-dried at room temperature by sucking with low-temperature steam. it can.
  • the object 10 can be vacuum-dried at room temperature and provided at low cost without using a heating device or a refrigerating device.
  • the object 10 vacuum-dried by the vacuum drying device 1 is an organic substance (organic compound) such as food, vegetables, fruits, wood, rice, grains, etc., and is an organism (living body) including plants and animals. Derived from. Then, in a natural state, the cell wall 11 as shown in FIG. 2, free water 13 exists in the cell lumen 12 surrounded by the cell wall 11, and bound water exists in the cell wall 11. Point to. Therefore, an inorganic substance (inorganic compound) such as a metal is not an object 10, and in particular, the vacuum drying device 1 is not used for drying a special liquid such as an organic solvent or a cleaning liquid adhering to a metal product or the like. Absent.
  • the first lid 21 (which may be the second lid 22) is connected to the container body 20 in the vacuum drying container 2 by a plurality of bolts and nuts, and the second lid 22 (which may be the first lid 21) is a container.
  • the container body 20 is opened without being connected to the body 20.
  • the object 10 is housed in the container body 20 through the opening.
  • the second lid 22 is connected to the container body 20 by a plurality of bolts and nuts.
  • the timing of the opening / closing operation of the air inflow valve 4 is set in the timer control unit 5. After that, the water-sealed elmo type vacuum pump 3 is operated to start vacuum suction in the container body 20, and the timer control unit 5 also starts to control the air inflow valve 4.
  • the timer control unit 5 operates the air inflow valve 4 to open the inflow port when a predetermined time elapses, and further operates the valve body to close the inflow port when a predetermined time elapses.
  • the operation is controlled so as to repeat for a predetermined time. That is, the process of opening and closing the air inflow valve 4 to send and stop air inside the container body 20 while vacuum sucking the inside of the container body 20 by the vacuum pump 3 (without stopping the vacuum suction) is performed by a timer.
  • the control unit 5 repeats the process at a preset timing.
  • the first electromagnetic wave generating unit 6 and the second electromagnetic wave generating unit 7 irradiate the object 10 inside the container body 20 with electromagnetic waves. That is, the object 10 receives microwaves from the magnetron.
  • the inside of the container body 20 suddenly returns to atmospheric pressure from the vacuum state (a state lower than the atmosphere). Become.
  • the inside of the container body 20 is evacuated, the water boils and becomes steam, but at that time, cavities (air bubbles) are generated. At that time, air bubbles are crushed, that is, cavitation occurs by injecting air into the inside of the container body 20 in a vacuum state from the outside.
  • Cavitation refers to the phenomenon in which bubbles collapse immediately after implosion and generate a shock wave toward the outside. In the case of water, the shock wave is equivalent to a pressure of 1000 to 10000 atmospheres per micron, and is made of metal.
  • the water contained in the object 10 includes free water 13 existing in each cell lumen 12 in the innumerable cells constituting the object 10 and bound water existing in the cell wall 11.
  • free water 13 it can be steamed and sucked even by normal vacuum suction.
  • bound water it has entered the cell wall 11, and the impact force due to cavitation acts to form fine voids (holes, water paths) in the cell wall 11 where the bound water has entered. it can. That is, innumerable fine voids are formed on the cell wall 11.
  • the fine voids function as a passage for water, and the bound water that has entered the cell wall 11 can easily escape from the cell wall 11, so that it can be easily vacuum-sucked by the vacuum pump 3. Therefore, vacuum drying of the object 10 is promoted. Even while the air is flowing in from the outside, the vacuum pump 3 performs vacuum suction inside the container body 20, so that the moisture discharged from the object 10 is continuously sucked.
  • the object 10 inside the container body 20 is irradiated with electromagnetic waves by the first electromagnetic wave generating unit 6 and the second electromagnetic wave generating unit 7, not only the free water 13 existing in the cell lumen 12 but also the cell wall 11 is irradiated.
  • the bound water existing in is also affected by electromagnetic waves (microwaves), and the water molecules rotate (intermolecular vibration) to generate heat (in the case of a microwave oven using a magnetron, the water molecules are 1). 2.45 billion rotations occur per second).
  • the free water 13 and the combined water evaporate and are evacuated by the vacuum pump 3.
  • the object 10 is vacuum-dried at room temperature (vaporization at room temperature) by the water-sealed elmo type vacuum pump 3. Drying), which promotes vacuum drying of the object 10.
  • the object 10 can be vacuum dried by the vacuum drying device 1.
  • two electromagnetic wave generating units 6 and 7 are used, but one unit may be used, or three or more units may be used. Further, the irradiation of the electromagnetic waves by the electromagnetic wave generating units 6 and 7 may be temporarily stopped when the inflow port of the air inflow valve 4 is opened in order to surely prevent the leakage of the electromagnetic waves.
  • Raw vegetables, etc. 1) Dry foods of raw vegetables, fruits, fish, etc. Sweet potatoes, etc. can be dried and have a good taste as they are. 2) Seasoned dashi trap Squid, asparagus, warabi, potatoes, etc. can be processed into new secondary foods with a vacuum trap of soy sauce flavor and soup stock. 3) Fruit trapping For example, the juice of mandarin oranges can be vacuum trapped in apples and processed as new fruits. 4) Dried flowers When flowers are dried in a vacuum, the raw color remains as it is, and dried flowers that look like fresh flowers are formed.
  • “Application example 4" By using the rice / grain storage silo as the vacuum drying container 2 and evacuating the inside of the storage silo without using light oil, the water content ratio can be reduced uniformly throughout. , Rice and grains can be vacuum dried without cracking.
  • a step of opening and closing the air inflow valve 4 to send or stop air into the inside of the vacuum drying container 2 while vacuum sucking the inside of the vacuum drying container 2 by the vacuum pump 3 is performed in advance.
  • cavitation is caused in the object 10, and the impact force acts on the object 10, so that a fine void can be formed in the cell wall 11 of the object 10.
  • the free water 13 existing in the cell lumen 12 but also the bound water that has entered the cell wall 11 can be easily vacuum-sucked by the vacuum pump 3, and the vacuum drying of the object 10 is promoted.
  • the object 10 can be vacuum-dried reliably in a short time.
  • the object 10 is irradiated with electromagnetic waves from the electromagnetic wave generating units 6 and 7, so that the object 10 exists in the cell lumen 12 of the object 10. Not only the free water 13 but also the bound water existing in the cell wall 11 generates heat and evaporates under the influence of electromagnetic waves (microwaves), and is easily vacuum-sucked by the vacuum pump 3. As a result, the object 10 can be vacuum-dried even more quickly and reliably.
  • the vacuum drying device 1 in this modification is a vacuum pump 3 that is connected to a plurality of vacuum drying containers 2 and the plurality of vacuum drying containers 2 and collectively vacuum-sucks the inside of the plurality of vacuum drying containers 2. And.
  • Each vacuum drying container 2 is appropriately provided with an air inflow valve 4 (with a timer control unit 5) and electromagnetic wave generating units 6 and 7. That is, the suction pipes 3a in the vacuum pump 3 are branched by the number of the vacuum drying containers 2, and the tip of the branched suction pipes 3a is connected to the suction portion 20a in the container body 20.
  • the plurality of vacuum drying containers 2 are stored in storage shelves in which a plurality of storage spaces are formed in the vertical direction and the horizontal direction. That is, the vacuum drying container 2 is stored in each of the plurality of storage spaces.
  • the vacuum drying device 30 in this modification is based on a mixer truck 31 which is a means of transportation, and the drum 32 in the mixer truck 31 is a vacuum drying container in this modification.
  • Rice and other grains are preferably used as the object to be stored in the drum 32, which is a vacuum drying container.
  • granular materials such as wood chips can be easily stored.
  • the drum 32 is provided with an input port for inserting an object at the rear end portion, and the input port can be sealed by a lid portion 32a. Further, the drum 32 rotates with the shaft portion 32b as the rotation axis, and when the mixer truck 31 is viewed from the rear surface, if it is rotated counterclockwise, it can be stirred while the object is housed inside, and the clock When it is rotated around, it can be discharged to the outside through the trough 32c. It is assumed that the drum 32 is also provided with a suction unit 20a and an air inflow valve 4 (with a timer control unit 5), similarly to the vacuum drying container 2 in the above embodiment. In addition, an electromagnetic wave generating unit is also provided as appropriate.
  • the loading platform of the mixer vehicle 31 is provided with a vacuum pump 3, a cooling water tank 33 connected to the vacuum pump 3 by a circulating water channel, a battery 34, and a power panel 35.
  • the cooling water tank 33 stores a large amount of water having excellent heat dissipation, and is used as circulating water in the water-sealed Elmo type vacuum pump 3.
  • the battery 34 is installed on the loading platform in this modification, the battery of the mixer truck 31 may be used, or the battery 34 loaded on the loading platform may be used as the battery of the mixer truck 31.
  • the power board 35 is for supplying the electric power of the battery 34 to each part of the vacuum drying device 30, and can turn on / off the energization of each part of the vacuum drying device 30.
  • the vacuum drying device 30 can be moved to various places. That is, the object can be vacuum dried in various places. Further, if the drum 32 is rotated, the contained object can be agitated, so that the object can be vacuum-dried evenly.
  • the vacuum drying device according to the present invention has high industrial applicability because it dries an object in a short time and reliably.
  • Vacuum drying device Vacuum drying container 20 Container body 20a Suction part 20b Support part 20c First flange 20d Second flange 21 First lid 22 Second lid 3 Vacuum pump 3a Suction pipe 4 Air inflow valve 5 Timer control unit 6 First Electromagnetic wave generator 7 Second electromagnetic wave generator 10 Object 11 Cell wall 12 Cell lumen 13 Free water 14 Combined water 30 Vacuum dryer 31 Mixer wheel 32 Vacuum drying container 32a Lid 32b Shaft 32c Higashi 33 Cooling water tank 34 Battery 35 power board

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Microbiology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

La présente invention concerne un procédé de séchage sous vide destiné à provoquer une cavitation par rapport à l'humidité contenue dans un objet (10), afin de provoquer l'implosion (Ip) de l'humidité et de produire une onde de choc (Sw), l'onde de choc formant de vides fins dans l'objet (10), servant à favoriser le séchage sous vide de l'objet (10) à l'aide d'une pompe à vide (3). La conception du procédé de séchage sous vide consiste à recevoir l'objet (10) dans un récipient de séchage sous vide (2) dans lequel l'objet (10) peut être introduit ou duquel il peut retiré, à provoquer la cavitation par rapport à l'objet (10) au moyen de la répétition, à un moment fixé prédéfini, d'une étape de démarrage/arrêt d'une alimentation en air vers le récipient de séchage sous vide (2) au moyen de l'ouverture/la fermeture d'une soupape d'admission d'air (4) conçue pour être ouverte/fermée, et disposée au niveau du récipient de séchage sous vide (2), pendant que l'intérieur du récipient de séchage sous vide (2) est aspiré à vide à l'aide de la pompe à vide (3). Ceci permet de sécher sous vide et de manière fiable l'objet en un court laps de temps.
PCT/JP2020/042548 2019-11-19 2020-11-16 Dispositif de séchage sous vide WO2021100639A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020227011471A KR20220055492A (ko) 2019-11-19 2020-11-16 진공 건조 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-208349 2019-11-19
JP2019208349A JP6739821B1 (ja) 2019-11-19 2019-11-19 真空乾燥装置

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WO2021100639A1 true WO2021100639A1 (fr) 2021-05-27

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WO (1) WO2021100639A1 (fr)

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Publication number Priority date Publication date Assignee Title
KR102535257B1 (ko) * 2022-05-12 2023-05-26 군산대학교산학협력단 신재생에너지 발전기능을 구비한 진공 마이크로파 건조 방법
KR20240076152A (ko) 2022-11-23 2024-05-30 이돈구 생물 원심 탈수장치

Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS5512325A (en) * 1978-07-07 1980-01-28 Hiyougo Izumi High temperature vacuum drying method
JPH09133462A (ja) * 1995-11-02 1997-05-20 Yasujima:Kk 木材乾燥方法及び木材乾燥装置
JP2000508887A (ja) * 1996-03-29 2000-07-18 ザ ユニバーシティ オブ ブリティッシュ コロンビア マイクロ波のような電磁気及び真空処理によるチップの製造
CN2539947Y (zh) * 2002-05-07 2003-03-12 张庆玉 真空热流低温脱水干燥保鲜装置
JP2009180440A (ja) * 2008-01-31 2009-08-13 Toyota Motor Corp 乾燥装置および乾燥方法
KR101655128B1 (ko) * 2015-04-01 2016-09-08 주식회사 티피에스 다목적 목재 건조장치 및 건조방법
CN206760723U (zh) * 2017-03-21 2017-12-19 延安大学 一种果蔬快速干燥机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006115752A (ja) 2004-10-21 2006-05-11 Kaneka San Spice:Kk 低菌化された香辛料の製造方法
LT1933639T (lt) 2005-10-04 2017-02-27 Jimmyash Llc Užkandžių produktų gamybos būdas ir tokiu būdu gauti produktai

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512325A (en) * 1978-07-07 1980-01-28 Hiyougo Izumi High temperature vacuum drying method
JPH09133462A (ja) * 1995-11-02 1997-05-20 Yasujima:Kk 木材乾燥方法及び木材乾燥装置
JP2000508887A (ja) * 1996-03-29 2000-07-18 ザ ユニバーシティ オブ ブリティッシュ コロンビア マイクロ波のような電磁気及び真空処理によるチップの製造
CN2539947Y (zh) * 2002-05-07 2003-03-12 张庆玉 真空热流低温脱水干燥保鲜装置
JP2009180440A (ja) * 2008-01-31 2009-08-13 Toyota Motor Corp 乾燥装置および乾燥方法
KR101655128B1 (ko) * 2015-04-01 2016-09-08 주식회사 티피에스 다목적 목재 건조장치 및 건조방법
CN206760723U (zh) * 2017-03-21 2017-12-19 延安大学 一种果蔬快速干燥机

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JP2021081119A (ja) 2021-05-27
JP6739821B1 (ja) 2020-08-12

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