WO2020118994A1 - Dispositif de décongélation par radiofréquence - Google Patents

Dispositif de décongélation par radiofréquence Download PDF

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Publication number
WO2020118994A1
WO2020118994A1 PCT/CN2019/082885 CN2019082885W WO2020118994A1 WO 2020118994 A1 WO2020118994 A1 WO 2020118994A1 CN 2019082885 W CN2019082885 W CN 2019082885W WO 2020118994 A1 WO2020118994 A1 WO 2020118994A1
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WO
WIPO (PCT)
Prior art keywords
radio frequency
power
defrosting
thawing
power amplifier
Prior art date
Application number
PCT/CN2019/082885
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English (en)
Chinese (zh)
Inventor
张力潇
俞国新
叶世超
潘自杰
陶瑞涛
臧艺强
Original Assignee
青岛海尔智能技术研发有限公司
海尔智家股份有限公司
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.)
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Publication date
Application filed by 青岛海尔智能技术研发有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔智能技术研发有限公司
Publication of WO2020118994A1 publication Critical patent/WO2020118994A1/fr

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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/06—Freezing; Subsequent thawing; Cooling
    • A23B4/07—Thawing subsequent to freezing
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/04—Freezing; Subsequent thawing; Cooling
    • A23B7/045—Thawing subsequent to freezing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85—Food storage or conservation, e.g. cooling or drying

Definitions

  • This application relates to the technical field of radio frequency thawing, for example, to a radio frequency thawing device.
  • the thawing methods for food thawing mainly include: natural thawing, soaking and thawing, refrigerated thawing and microwave thawing.
  • natural thawing and refrigerated thawing are for thawing frozen foods, especially for large pieces of meat.
  • the thawing time is longer, and there is a serious loss of juice, which affects the taste and nutrients of the food.
  • Dipping and thawing is mainly aimed at thawing meat, which can shorten the thawing time relatively, but it also has the problem of juice loss, serious discoloration, and easy to breed bacteria.
  • Microwave defrosting has obvious effect on the heating of frozen food in a short time.
  • Existing microwave ovens used for defrosting mainly use the weight of the defrosted items to determine the defrosting power and defrosting time or artificial when determining the defrosting power and defrosting time. Setting, artificially setting the defrosting power and defrosting time will cause incomplete defrosting or set the defrosting time to be too long, causing the meat to change color after defrosting, which will affect the food taste and nutrients.
  • the present disclosure aims to provide a radio frequency thawing device that improves thawing efficiency.
  • a brief summary is given below. This summary section is not a general comment, nor is it to determine key/important elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a preface to the detailed description that follows.
  • a radio frequency defrosting device including: a defrosting cavity, a housing, a radio frequency source, a radio frequency power amplifier, and a radio frequency antenna;
  • the radio frequency source and the radio frequency power amplifier are disposed between the defrosting cavity and the housing; the radio frequency power amplifier is connected to the radio frequency source and is configured to amplify the radio frequency power generated by the radio frequency source to the device Constant power
  • the radio frequency antenna is disposed on the inner wall of the defrosting cavity; the radio frequency antenna is connected to the radio frequency power amplifier and configured to radiate radio frequency generated by the radio frequency source into the defrosting cavity.
  • the set power range is 200W to 1000W.
  • the radio frequency defrosting device further includes: a power detection unit and a power adjustment unit;
  • the power detection unit is disposed between the defrosting cavity and the housing, and is configured to detect the incident power of radio frequency and the reflected power reflected by the defrosting cavity;
  • the power adjustment unit is connected to the radio frequency source and is configured to adjust the power of the radio frequency source to transmit radio frequency according to the incident power and the reflected power.
  • the radio frequency defrosting device further includes: a power detection unit and a power adjustment unit;
  • the power detection unit is disposed between the defrosting cavity and the housing, and is configured to detect the incident power of radio frequency and the reflected power reflected by the defrosting cavity;
  • the power adjustment unit is connected to the radio frequency power amplifier, and is configured to adjust the radio frequency power amplified by the radio frequency power amplifier according to the incident power and the reflected power.
  • the number of the radio frequency antennas is two or more;
  • the radio frequency defrosting device further includes: a partition plate disposed between adjacent radio frequency antennas.
  • the material of the partition is the same as the material of the inner wall of the defrosting chamber.
  • the material of the inner wall of the thawing chamber is stainless steel. A smooth transition connection between adjacent side walls of the defrosting cavity.
  • the radio frequency defrosting device further includes: a heat dissipation fan provided between the defrosting cavity and the housing;
  • the casing is provided with an air inlet and an air outlet.
  • the heat dissipation fan and the RF power amplifier are disposed between the bottom of the defrosting chamber and the housing.
  • the radio frequency antenna is disposed on the inner wall at the bottom of the defrosting cavity.
  • the radio frequency defrosting device further includes: a door body embedded with wire glass.
  • the radio frequency defrosting device includes a defrosting cavity, a housing, a radio frequency source, a radio frequency power amplifier and a radio frequency antenna.
  • the radio frequency source is connected to the radio frequency power amplifier.
  • the radio frequency power amplifier amplifies the radio frequency power generated by the radio frequency source to a set power, and
  • the radio frequency antenna radiates into the defrosting cavity, and the strong radio frequency penetration rate makes the temperature of the defrosted food heat up steadily.
  • the radio frequency antenna radiates into the defrosting cavity to improve the heating uniformity of the defrosted food and improve the defrosting effect.
  • Fig. 1 is a schematic structural diagram of a radio frequency defrosting device according to an exemplary embodiment
  • Fig. 2 is a schematic structural diagram of a radio frequency defrosting device according to an exemplary embodiment
  • Fig. 3 is a schematic structural diagram of a radio frequency defrosting device according to an exemplary embodiment.
  • the thawing methods for meat thawing mainly include: natural thawing, soaking thawing, refrigeration thawing and microwave thawing.
  • natural thawing and immersing and thawing use heat conduction from outside to inside, and the thawing temperature is not uniform.
  • the external temperature is room temperature, the thawing time is very long, and the external temperature is much higher than 0 degrees Celsius. It is easy to produce blood water during the thawing process, causing nutrient loss, The mouthfeel is reduced and it is easy to breed bacteria.
  • Refrigeration and thawing also adopts the heat conduction method from outside to inside.
  • the external temperature is the refrigerated temperature and the external temperature is controllable.
  • the thawing time is long. Microwave defrosting can quickly heat food, but it is very easy to produce uneven heating, and even parts of food that are not defrosted will be overheated and cooked.
  • the radio frequency defrosting device provided by the embodiments of the present disclosure is mainly used to solve the problem that it is difficult for the defrosting products in the prior art to ensure the defrosting quality of meat.
  • FIG. 1 is a schematic structural diagram of a radio frequency defrosting device according to an exemplary embodiment, including: a radio frequency source 1, a radio frequency power amplifier 2, and a radio frequency antenna 3.
  • the radio frequency source 1 and the radio frequency power amplifier 2 are disposed between the defrosting cavity and the housing of the radio frequency defrosting device.
  • the radio frequency source 1 is connected to the radio frequency power amplifier 2 and is configured to amplify the radio frequency power generated by the radio frequency source 1 to a set power.
  • the power of the radio frequency signal generated by the radio frequency source 1 is very small.
  • the radio frequency source 1 is connected to the radio frequency power amplifier 2, and the radio frequency power amplifier 2 increases the power of the radio frequency signal generated by the radio frequency source 1.
  • the radio frequency antenna 3 is disposed on the inner wall of the defrosting cavity. The radio frequency antenna 3 is connected to the radio frequency power amplifier 2 and is configured to radiate the radio frequency generated by the radio frequency source 1 into the defrosting cavity.
  • the radio frequency antenna 3 is responsible for radiating the radio frequency signal generated by the radio frequency source 1 and boosted by the radio frequency power amplifier 2 into the defrosting cavity, and is configured to heat the food to be defrosted.
  • the RF frequency radiated into the defrosting cavity is 380MHz-480MHz.
  • the radio frequency radiated into the defrosting cavity is 380MHz, 400MHz, 420MHz, 425MHz, 430MHz, 435MHz, 440MHz, 460MHz or 480MHz.
  • the set power is 200W-1000W.
  • set the power to 200W, 400W, 450W, 500W, 550W, 600W, 800W or 1000W.
  • the radio frequency defrosting device includes a defrosting cavity, a housing, a radio frequency source, a radio frequency power amplifier and a radio frequency antenna.
  • the radio frequency source is connected to the radio frequency power amplifier.
  • the radio frequency power amplifier amplifies the radio frequency power generated by the radio frequency source to a set power, and
  • the radio frequency antenna radiates into the defrosting cavity, and the strong radio frequency penetration rate makes the temperature of the defrosted food heat up steadily.
  • the radio frequency antenna radiates into the defrosting cavity to improve the heating uniformity of the defrosted food and improve the defrosting effect.
  • Table 1 is the experimental data obtained based on multiple implementations, among which are the penetration depth of electromagnetic waves of different frequencies (430MHz, 915MHz and 2450MHz) to food:
  • the radio frequency defrosting device radiates into the defrosting cavity with a radio frequency of 380MHz to 480MHz, which has good penetration of food during the defrosting process, and can achieve uniform heating of the inside and outside of the food at the same time to achieve The defrosted food heats up steadily inside and outside, can quickly defrost the food, and the juice is rarely lost, and the color is less.
  • the defrosting time is the average value obtained from multiple tests
  • the temperature difference is the temperature difference between the ambient temperature of the defrosted food and the temperature inside the defrosted food during the defrosting process.
  • the temperature of the defrosted food is monitored in real time by an infrared temperature measuring device.
  • the RF defrosting device provided by the embodiments of the present disclosure is used to defrost food, and the radio frequency penetration is strong, so that the inside and outside of the food can be heated uniformly at the same time.
  • the power radiated into the thawing cavity is in the range of 200W to 1000W, and the thawing time is short, to avoid the outflow of juice during the thawing process, the thawing efficiency is high, and the nutritional components of the food will not be damaged after thawing, especially for meat, There is no obvious whitening on the surface of the meat after thawing, which guarantees the taste of the meat after thawing.
  • the radio frequency defrosting device further includes a power detection unit 41 and a power adjustment unit 51.
  • the power detection unit 41 is disposed between the defrosting cavity and the housing, and is configured to detect the incident power of radio frequency and the reflected power reflected by the defrosting cavity.
  • the power adjustment unit 51 is connected to the radio frequency source 1 and is configured to adjust the power of the radio frequency source 1 to emit radio frequency according to the incident power and the reflected power.
  • the power adjustment unit 51 is connected to the radio frequency source 1 to reduce the transmission power of the radio frequency source 1 or stop transmitting radio frequency.
  • the radio frequency defrosting device further includes a power detection unit 42 and a power adjustment unit 52.
  • the power detection unit 42 is disposed between the defrosting cavity and the housing, and is configured to detect the incident power of radio frequency and the reflected power reflected by the defrosting cavity.
  • the power adjustment unit 52 is connected to the radio frequency power amplifier 2 and is configured to adjust the power of the radio frequency amplified by the radio frequency power amplifier 2 according to the incident power and the reflected power.
  • the power adjustment unit 52 is connected to the RF power amplifier 2 to reduce the amplification factor of the RF power by the RF power amplifier 2.
  • the number of radio frequency antennas 3 is two or more. The larger the volume of the radio frequency thawing device, the greater the number of radio frequency antennas 3.
  • the multiple radio frequency antennas 3 enable the electromagnetic wave energy generated by the radio frequency to be more uniformly radiated to the defrosted food, shorten the defrosting time, and improve the defrosting efficiency.
  • the number of the radio frequency antennas 3 is two or more, in order to prevent the radio frequency antenna 3 from absorbing the radio frequency radiated by other radio frequency antennas 3, there are provided between adjacent radio frequency antennas 3 Ground baffle.
  • the partition plate prevents the radio frequency antenna 3 from absorbing the radio frequency radiated from other radio frequency antennas 3, improves the service life of the radio frequency antenna 3, and at the same time improves the electromagnetic wave energy utilization rate and improves the freezing efficiency.
  • the material of the partition is the same as the material of the inner wall of the defrosting chamber.
  • the material of the partition and the material of the inner wall of the defrosting chamber are stainless steel. Avoid water droplets on the heated food to cause the heating cavity to rust and affect the service life of the pyrolysis device.
  • the partition may be provided on the inner wall of the defrosting chamber through an integral molding process. To avoid a gap between the partition and the inner wall of the defrosting cavity, the radio frequency antenna 3 absorbs the radio frequency radiated by other radio frequency antennas 3, thereby reducing the utilization rate of electromagnetic wave energy.
  • the baffle may be provided on the inner wall of the defrosting chamber through a welding process to improve the stability of the baffle.
  • the smooth transition between adjacent side walls of the defrosting chamber is avoided to prevent radio frequency from collecting within the angle between the adjacent side walls, causing local temperature to be too high and reducing the quality of defrosting the video.
  • the radio frequency defrosting device further includes: a cooling fan.
  • the shell is provided with an air inlet and an air outlet, and a heat dissipation fan is provided between the defrosting cavity and the shell.
  • a cooling fan is used to cool the RF power amplifier 2, improve the defrosting efficiency, reduce the loss of the RF power amplifier 2, and extend the service life of the RF defrosting device.
  • the radio frequency antenna 3 is arranged on the inner wall of the bottom of the defrosting cavity.
  • the radio frequency power amplifier 2 is disposed between the bottom of the defrosting cavity and the housing.
  • a cooling fan is arranged between the bottom of the defrosting cavity and the housing.
  • glass in order to facilitate real-time viewing of the defrosted food in the defrosting cavity and avoid electromagnetic wave leakage, glass is embedded on the door body of the radio frequency defrosting device. Due to the strong penetration of radio frequency, it is possible to prevent the radio frequency from penetrating the glass and causing harm to the human body.
  • the glass is wire glass.
  • an elastic sealing structure is adopted between the door body of the radio frequency defrosting device and the radio frequency defrosting cavity to compensate for electromagnetic leakage that may be caused by processing errors and assembly errors of the door body and cavity, and improve the safety of the radio frequency defrosting device.
  • the disclosed methods and products may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of code that contains one or more of the Executable instructions.
  • the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can also be executed in reverse order, depending on the functions involved.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

La présente invention concerne le domaine technique de la décongélation par radiofréquence et concerne un dispositif de décongélation par radiofréquence, comprenant une cavité de décongélation, un boîtier, une source de radiofréquence, un amplificateur de puissance radiofréquence et une antenne radiofréquence. La source de radiofréquence et l'amplificateur de puissance radiofréquence sont disposés entre la cavité de décongélation et le boîtier ; la source de radiofréquence et l'amplificateur de puissance radiofréquence sont connectés et conçus pour amplifier une puissance radiofréquence générée par la source de radiofréquence à une puissance définie ; l'antenne radiofréquence est disposée sur la paroi interne de la cavité de décongélation ; et l'antenne radiofréquence et l'amplificateur de puissance radiofréquence sont connectés et conçus pour rayonner un rayonnement radiofréquence généré par la source de radiofréquence dans la cavité de décongélation. Selon le dispositif de décongélation par radiofréquence proposé par les modes de réalisation de la présente invention, la température d'un aliment décongelé s'élève de façon régulière à l'intérieur et à l'extérieur, l'uniformité de chauffage de l'aliment décongelé est améliorée, et l'effet de décongélation est amélioré.
PCT/CN2019/082885 2018-12-14 2019-04-16 Dispositif de décongélation par radiofréquence WO2020118994A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811536114.2 2018-12-14
CN201811536114.2A CN111317017B (zh) 2018-12-14 2018-12-14 射频解冻装置

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WO2020118994A1 true WO2020118994A1 (fr) 2020-06-18

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Publication number Priority date Publication date Assignee Title
CN214582001U (zh) * 2020-12-02 2021-11-02 海信（山东）冰箱有限公司 一种射频解冻装置及冰箱
CN116193658B (zh) * 2023-04-24 2023-06-30 深圳市博威射频科技有限公司 一种射频解冻炉自适应加热系统

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CN108521691A (zh) * 2018-03-19 2018-09-11 上海点为智能科技有限责任公司 射频解冻加热设备
CN207881331U (zh) * 2017-07-31 2018-09-18 青岛海尔智能技术研发有限公司 解冻装置及具有该解冻装置的冰箱
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CN109000418A (zh) * 2017-06-06 2018-12-14 青岛海尔股份有限公司 解冻装置及具有该解冻装置的冰箱

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CN106234557A (zh) * 2016-10-10 2016-12-21 成都沃特塞恩电子技术有限公司 一种射频功率源和射频解冻装置
CN109000402B (zh) * 2017-06-06 2020-05-26 青岛海尔股份有限公司 冰箱
CN207444184U (zh) * 2017-07-31 2018-06-05 青岛海尔智能技术研发有限公司 解冻装置

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Publication number Priority date Publication date Assignee Title
CN101427605B (zh) * 2006-02-21 2013-05-22 戈吉有限公司 电磁加热
CN206213147U (zh) * 2016-10-14 2017-06-06 成都沃特塞恩电子技术有限公司 一种射频解冻装置
CN106989555A (zh) * 2017-05-24 2017-07-28 合肥美菱股份有限公司 一种具有解冻功能的冰箱
CN109000418A (zh) * 2017-06-06 2018-12-14 青岛海尔股份有限公司 解冻装置及具有该解冻装置的冰箱
CN207881331U (zh) * 2017-07-31 2018-09-18 青岛海尔智能技术研发有限公司 解冻装置及具有该解冻装置的冰箱
CN108521691A (zh) * 2018-03-19 2018-09-11 上海点为智能科技有限责任公司 射频解冻加热设备
CN108812854A (zh) * 2018-05-08 2018-11-16 上海点为智能科技有限责任公司 射频解冻系统

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