JP3074565B1 - Refrigeration method and freezer using nuclear magnetic resonance phenomenon - Google Patents
Refrigeration method and freezer using nuclear magnetic resonance phenomenonInfo
- Publication number
- JP3074565B1 JP3074565B1 JP11142405A JP14240599A JP3074565B1 JP 3074565 B1 JP3074565 B1 JP 3074565B1 JP 11142405 A JP11142405 A JP 11142405A JP 14240599 A JP14240599 A JP 14240599A JP 3074565 B1 JP3074565 B1 JP 3074565B1
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- freezer
- static magnetic
- internal space
- air
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
Abstract
【要約】
【課題】 食品等を冷凍保存する際の水分の分離や組織
の破壊を抑え、食品の鮮度や風味を損なわずに冷凍でき
る冷凍方法及び冷凍庫を提供する。
【解決手段】 冷凍庫の内部空間に静磁場を発生させる
と共に、該静磁場内に位置した物体に対して、静磁場の
磁界強度に応じて決定される所定周波数の電磁波を連続
的または間欠的に照射し、該物体に含まれる水分子を構
成する水素原子核に核磁気共鳴を生じさせて水分の氷結
温度を降下させ、通常以下の氷結温度で冷凍する。The present invention provides a freezing method and a freezer that can suppress the separation of water and the destruction of a tissue when a food or the like is frozen and stored, and can freeze the food without deteriorating the freshness and flavor of the food. SOLUTION: A static magnetic field is generated in an internal space of a freezer, and an electromagnetic wave of a predetermined frequency determined according to the magnetic field strength of the static magnetic field is continuously or intermittently applied to an object located in the static magnetic field. Irradiation causes nuclear magnetic resonance to occur in the hydrogen nuclei constituting the water molecules contained in the object to lower the freezing temperature of water and freeze at the freezing temperature below normal.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、食品等を冷凍保存
する際に、水分の分離や組織の破壊を抑えつつ冷凍する
冷凍方法及び冷凍庫に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freezing method and a freezer for freezing food and the like while suppressing separation of water and destruction of tissue when the food or the like is stored frozen.
【０００２】[0002]
【従来の技術】従来、生鮮食料品をその鮮度を損なわず
に保存するために、ショックフリーザー等の冷凍庫が利
用されている。しかし、これらの冷凍庫で食品を急速冷
凍すると図４に示す如く、食品４１の表層部４２が先に
冷却され、表層部４２と内部４３とで温度勾配を生じる
ため、食品４１の表層部４２が先に凍結すると共に、内
部４３の水分が表層部４２の氷の核に吸い上げられるこ
とになる。また、食品４１の内部においても、大氷結晶
４４が生成する傾向があり、冷凍時間を短縮しても水分
の分離や、移動とそれに伴う組織の破壊を回避すること
は困難であった。2. Description of the Related Art Conventionally, a freezer such as a shock freezer has been used in order to preserve fresh food without losing its freshness. However, when the food is rapidly frozen in these freezers, as shown in FIG. 4, the surface layer 42 of the food 41 is cooled first, and a temperature gradient is generated between the surface layer 42 and the inside 43. At the same time as the ice is frozen first, the water in the interior 43 is sucked up into the ice core of the surface layer portion 42. Also, large ice crystals 44 tend to be formed inside the food 41, and it has been difficult to avoid separation of water, or movement and accompanying tissue destruction even if the freezing time is shortened.
【０００３】また、食品に有害な細菌には低温に強いも
のも存在し、庫内外の細菌が食品に付着した場合、冷凍
保存をしても経時的に食品の劣化が進行するという問題
が有った。[0003] In addition, some bacteria that are harmful to foods are resistant to low temperatures, and when bacteria inside and outside the food adhere to the foods, there is a problem that the foods deteriorate over time even if they are stored frozen. Was.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来技術の
上記の問題点に鑑みて、食品等を冷凍保存する際の水分
の分離や組織の破壊を抑え、食品の鮮度や風味を損なわ
ずに冷凍できる冷凍方法及び冷凍庫を提供することを目
的としてなされたものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention suppresses the separation of water and the destruction of tissue during the preservation of food or the like, and does not impair the freshness or flavor of the food. The purpose of the present invention is to provide a freezing method and a freezer that can be frozen.
【０００５】[0005]
【課題を解決するための手段】冷凍庫の内部空間に静磁
場を発生させると共に、該静磁場内に位置した物体に対
して、静磁場の磁界強度に応じて決定される所定周波数
の電磁波を連続的または間欠的に照射し、該物体に含ま
れる水分子を構成する水素原子核に核磁気共鳴を生じさ
せて水分の氷結温度を降下させ、通常以下の氷結温度で
冷凍するようにした。また、冷凍庫の内部空間の空気ま
たは外部の空気を回収し高性能フィルタでろ過・無菌化
して前記内部空間に供給する空気無菌化手段を付設し、
物体を冷凍庫内に収容前及び収容後に空気無菌化手段を
作動させ、冷凍庫内を無菌化した後、空気無菌化手段を
停止し、冷凍を開始するようにした。A static magnetic field is generated in an internal space of a freezer, and an electromagnetic wave of a predetermined frequency determined according to the magnetic field strength of the static magnetic field is continuously applied to an object located in the static magnetic field. Irradiation was carried out intermittently or intermittently to cause nuclear magnetic resonance in hydrogen nuclei constituting water molecules contained in the object to lower the freezing temperature of water and to freeze the water at a normal freezing temperature or lower. Further, air sterilization means for collecting air in the internal space of the freezer or the outside air, filtering and sterilizing with a high-performance filter and supplying the air to the internal space is provided,
Before and after storing the object in the freezer, the air sterilizing means was operated to sterilize the inside of the freezer, then the air sterilizing means was stopped, and freezing was started.
【０００６】[0006]
【発明の実施の形態】図１は、本発明第１実施形態の冷
凍庫を示す概略図である。図において、冷凍庫１は、周
囲を断熱材２で包覆された内部空間３を冷却する冷凍装
置４，同内部空間に静磁場を発生させる静磁場発生手段
５、及び、後述する所定周波数の電磁波を照射するため
の電磁波発生装置６より主に構成されている。FIG. 1 is a schematic view showing a freezer according to a first embodiment of the present invention. In the figure, a freezer 1 includes a refrigerating device 4 for cooling an internal space 3 whose periphery is covered with a heat insulating material 2, a static magnetic field generating means 5 for generating a static magnetic field in the internal space, and an electromagnetic wave having a predetermined frequency to be described later. Mainly composed of an electromagnetic wave generating device 6 for irradiating.
【０００７】冷凍装置４は、内部空間３に位置した冷却
コイル１１（蒸発器）と、外部の冷凍機１２（圧縮機，
凝縮器等）とを冷凍配管で連結し、冷凍サイクルを構成
するものであり、温度センサー１３により内部空間３の
温度を検知して制御装置１４により冷凍機１２の運転を
制御し、内部空間３を所定の低温に維持可能である。１
５は内部空間３内の空気を冷却コイル１１に循環させる
ファンである。The refrigerating device 4 includes a cooling coil 11 (evaporator) located in the internal space 3 and an external refrigerating machine 12 (compressor,
And a refrigeration cycle by connecting a condenser to the internal space 3 by detecting the temperature of the internal space 3 by the temperature sensor 13 and controlling the operation of the refrigerator 12 by the control device 14. Can be maintained at a predetermined low temperature. 1
Reference numeral 5 denotes a fan for circulating the air in the internal space 3 to the cooling coil 11.
【０００８】静磁場発生手段５は、内部空間３の対向す
る壁面に、夫々内部空間３側にＮ極とＳ極の極性を示す
ように配置された一対の永久磁石１６，１７で構成さ
れ、図１中破線で示されるように内部空間３に静磁場を
形成している。このような静磁場を形成する手段として
は、常伝導或いは超伝導磁石等も考えられるが、運転コ
ストの点で永久磁石が有利である。The static magnetic field generating means 5 is constituted by a pair of permanent magnets 16 and 17 arranged on opposite wall surfaces of the internal space 3 so as to show the polarity of the N pole and the S pole on the internal space 3 side, respectively. As shown by the broken line in FIG. 1, a static magnetic field is formed in the internal space 3. As a means for forming such a static magnetic field, a normal conduction or superconducting magnet can be considered, but a permanent magnet is advantageous in terms of operating cost.
【０００９】電磁波発生装置６は電磁波のパルスを発生
させる電磁波発振器１８及びそれに接続され冷凍庫１の
内部空間３に電磁波を放射する電磁波出力コイル１９
（アンテナ），制御装置２０からなり、該制御装置２０
により電磁波発振器１８から出力する電磁波の周波数及
びパルス周波数を制御可能である。電磁波発生装置６か
ら出力する電磁波の周波数は、静磁場発生手段５による
静磁場の磁界強度に応じて次のように設定される。The electromagnetic wave generator 6 includes an electromagnetic wave oscillator 18 for generating a pulse of an electromagnetic wave and an electromagnetic wave output coil 19 connected to the oscillator 18 for radiating the electromagnetic wave to the internal space 3 of the freezer 1.
(Antenna) and a control device 20.
Thus, the frequency and pulse frequency of the electromagnetic wave output from the electromagnetic wave oscillator 18 can be controlled. The frequency of the electromagnetic wave output from the electromagnetic wave generator 6 is set as follows according to the magnetic field strength of the static magnetic field generated by the static magnetic field generating means 5.
【００１０】一般に水素原子核のような荷電粒子は自転
することによって小さな磁場を発生しており、通常これ
らの磁場は任意の方向に並び互いに打ち消し合って正味
の磁場は生じない。しかし、外部磁場が存在する場合に
は、それによって水素原子核（プロトン）は外部磁場の
方向に配向され、Ｎ極，Ｓ極のいずれかを向くが、それ
らは同数でなくその差によって正味磁場を生じ、更に、
外部磁場方向を軸とした歳差運動（首振り運動）を開始
する。In general, charged particles such as hydrogen nuclei generate a small magnetic field by spinning. Usually, these magnetic fields are arranged in arbitrary directions and cancel each other to generate no net magnetic field. However, when an external magnetic field is present, the hydrogen nuclei (protons) are thereby oriented in the direction of the external magnetic field, pointing to either the north pole or the south pole, but they are not the same number, and the difference causes a net magnetic field. Occurs, and
Initiate precession (swinging) around the direction of the external magnetic field.
【００１１】この歳差運動の角周波数ωはラーモア方程
式と呼ばれる次式によって与えられる。 ω＝γ・Ｈ ここで、Ｈは外部磁場の強度、γは磁気回転比であり、
この磁気回転比γは原子核毎に固有の比例定数であり、
水素原子プロトンの場合、γ（Ｈ）＝４２．６（ＭＨｚ
／Ｔ）である。Ｔはテスラで１（Ｔ）は１０，０００ガ
ウスに相当する。このように外部磁場の中で個々の水素
原子核プロトンは歳差運動を行なっているが、それらは
位相が異なるため、外部磁場方向以外の磁場成分は相殺
される。The angular frequency ω of the precession is given by the following equation called the Larmor equation. ω = γ · H where H is the strength of the external magnetic field, γ is the gyromagnetic ratio,
This gyromagnetic ratio γ is a proportional constant unique to each nucleus,
In the case of a hydrogen atom proton, γ (H) = 42.6 (MHz
/ T). T is Tesla and 1 (T) is equivalent to 10,000 Gauss. As described above, the individual protons of the hydrogen nuclei perform precession in the external magnetic field, but since they have different phases, magnetic field components other than the direction of the external magnetic field are canceled.
【００１２】このような状態で、歳差運動している水素
原子核プロトンの周波数と一致した周波数の電磁波を与
えると、核磁気共鳴現象を起こし、水素原子核は電磁波
のエネルギを吸収することになる。電磁波の周波数が一
致しない場合は共鳴現象は起こらない。このような磁気
共鳴現象は、他の荷電粒子、例えば不対電子等でも発生
するが、共鳴周波数が異なる。In such a state, when an electromagnetic wave having the same frequency as that of the protons of the hydrogen nuclei that are precessing is given, a nuclear magnetic resonance phenomenon occurs, and the hydrogen nuclei absorb the energy of the electromagnetic waves. If the frequencies of the electromagnetic waves do not match, no resonance phenomenon occurs. Such a magnetic resonance phenomenon also occurs with other charged particles, for example, unpaired electrons, but has a different resonance frequency.
【００１３】本発明では、水素原子が冷凍保存の対象と
する生鮮食料品等の水分を始めとして多く広範囲に分布
して含まれていることから、水素原子の核磁気共鳴現象
を利用するものである。In the present invention, the nuclear magnetic resonance phenomenon of hydrogen atoms is used because hydrogen atoms are widely distributed and contained in water, such as fresh foods to be frozen and stored. is there.
【００１４】上記冷凍対象物品を静磁場の中に位置さ
せ、所定周波数の電磁波を照射し、核磁気共鳴現象によ
って電磁波のエネルギを水素原子核が吸収することによ
って、通常０〜−５℃である冷凍対象物品中の水分の氷
結温度を−４０℃以下まで降下させることができる。The object to be frozen is placed in a static magnetic field, irradiated with an electromagnetic wave of a predetermined frequency, and the energy of the electromagnetic wave is absorbed by hydrogen nuclei by a nuclear magnetic resonance phenomenon. The freezing temperature of water in the target article can be lowered to -40C or lower.
【００１５】本発明において利用する水素原子核プロト
ンの核磁気共鳴現象ではマイクロ波等より低い１０1〜
１０5ＫＨｚ程度のラジオ波（ＲＦ）の周波数帯の電磁
波を使用し、例えば、外部磁場、即ち、静磁場発生手段
５を構成する永久磁石１６，１７による磁界強度が１０
０ガウスである場合、電磁波発生装置６から発生する電
磁波の周波数は４２３．７ＫＨｚである。In the nuclear magnetic resonance phenomenon of hydrogen nuclear protons used in the present invention, 10 1 to 10 which are lower than those of microwaves and the like.
An electromagnetic wave of a radio wave (RF) frequency band of about 10 5 KHz is used, and for example, the external magnetic field, that is, the magnetic field strength of the permanent magnets 16 and 17 constituting the static magnetic field generating means 5 is 10
In the case of 0 Gauss, the frequency of the electromagnetic wave generated from the electromagnetic wave generator 6 is 423.7 KHz.
【００１６】以上の如く構成された冷凍庫１は、静磁場
発生手段５により所定の磁界強度の静磁場を形成する内
部空間３に食品等の被冷凍物品を収容後、電磁波発生装
置６を作動させ、電磁波出力コイル１９から所定周波数
の電磁波を出力し、上記被冷凍物品に照射することによ
り、該物品中の水素原子核プロトンに核磁気共鳴現象を
生じさせ、水分の氷結温度を降下させた状態で、冷凍機
１２及びそのファン１５を作動させ、内部空間３の温度
を通常の氷結温度以下に下げ、−２０℃以下、必要に応
じては−４０℃以下の超低温まで水分を氷結させずに、
物品全体を冷却した後、瞬時に凍結させる。このため、
図３に示す如く食品３１の表層部３２と内部３３との温
度差が少なく、水分の移動や、大氷結晶の成長が起こり
にくいので、食品３１の水分の分離・組織の破壊が抑え
られ、鮮度・風味を保持した状態で冷凍保存できる。In the freezer 1 configured as described above, after the articles to be frozen such as foods are stored in the internal space 3 where the static magnetic field generating means 5 forms a static magnetic field having a predetermined magnetic field strength, the electromagnetic wave generator 6 is operated. By outputting an electromagnetic wave of a predetermined frequency from the electromagnetic wave output coil 19 and irradiating the article to be frozen, a nuclear magnetic resonance phenomenon occurs in protons of hydrogen nuclei in the article, and in a state where the freezing temperature of water is lowered. , The refrigerator 12 and its fan 15 are operated to lower the temperature of the internal space 3 to the normal freezing temperature or lower, and not to freeze water to an extremely low temperature of -20 ° C or lower and, if necessary, -40 ° C or lower,
After cooling the whole article, it is frozen instantly. For this reason,
As shown in FIG. 3, the temperature difference between the surface layer portion 32 and the inside 33 of the food 31 is small, and the movement of water and the growth of large ice crystals are unlikely to occur. Can be frozen and preserved while maintaining freshness and flavor.
【００１７】また、電磁波発生装置６で発生させる電磁
波の周波数／出力が比較的低いものであり、且つ、静磁
場発生手段５に永久磁石１６，１７を使用するため運転
コストを低く抑えることができる。尚、庫内温度を氷結
温度以上に保持すれば、食品を凍結させずに保存し、鮮
度保持できる。Further, since the frequency / output of the electromagnetic wave generated by the electromagnetic wave generator 6 is relatively low, and the permanent magnets 16 and 17 are used for the static magnetic field generating means 5, the operating cost can be kept low. . If the temperature in the refrigerator is kept at a temperature not lower than the freezing temperature, the food can be stored without freezing and the freshness can be maintained.
【００１８】図２は本発明第２実施形態の冷凍庫２１を
示すものである。該冷凍庫２１は、第１実施形態の冷凍
庫１に空気無菌化手段２２を付設してなり、他の構成は
同様である。FIG. 2 shows a freezer 21 according to a second embodiment of the present invention. The freezer 21 is the same as the freezer 1 of the first embodiment, except that air sterilization means 22 is added thereto.
【００１９】空気無菌化手段２２は、庫外に設置したケ
ーシング２３内に高性能フィルタ２４，送風機２５を設
け、冷凍庫２１の内部空間３の空気を空気循環路２６に
より循環させるようにしている。２７，２８，２９はダ
ンパーであり、それらにより空気循環路２６を遮断した
り、外気導入と内気循環とに切換えることができる。The air sterilizing means 22 is provided with a high-performance filter 24 and a blower 25 in a casing 23 installed outside the refrigerator, and circulates the air in the internal space 3 of the freezer 21 through an air circulation path 26. Reference numerals 27, 28 and 29 denote dampers, which can shut off the air circulation path 26 or switch between outside air introduction and inside air circulation.
【００２０】例えば、冷凍庫２１に物品を収容する前
に、ダンパー２７を閉じ、ダンパー２８，２９を開け、
送風機２５を作動させることにより、外気を高性能フィ
ルタ２４でろ過・無菌化して庫内に供給し庫内を陽圧に
保持することで（同時に図示しない搬入口から排気を行
う）、内部空間３を無菌化し、且つ、物品の搬入口から
の外気の侵入を抑えることができる。For example, before storing articles in the freezer 21, the damper 27 is closed and the dampers 28 and 29 are opened.
By operating the blower 25, the outside air is filtered and sterilized by the high-performance filter 24, supplied to the inside of the refrigerator, and maintained at a positive pressure in the refrigerator (simultaneously, the exhaust is performed from a carry-in port (not shown)). Can be sterilized, and the intrusion of outside air from the article entrance can be suppressed.
【００２１】そして、冷凍庫２１を閉鎖し、食品の冷凍
を開始する前にダンパー２９を閉じ、ダンパー２７を開
け、１０〜３０分程度庫内の空気を高性能フィルタ２４
に循環させることで内部空間３を無菌化できる。この
後、送風機２５を停止しダンパー２７，２８，２９を全
て閉じ、冷凍を開始する。このように内部空間３を無菌
化してから冷凍することで、細菌の付着による食品の劣
化を防止できる。Then, the freezer 21 is closed, and the damper 29 is closed and the damper 27 is opened before starting the freezing of the food.
The internal space 3 can be sterilized by circulating the air. Thereafter, the blower 25 is stopped, the dampers 27, 28 and 29 are all closed, and freezing is started. As described above, by sterilizing the internal space 3 and then freezing it, it is possible to prevent food from deteriorating due to bacterial adhesion.
【００２２】尚、上記各実施形態では、主に生鮮食料品
の冷凍保存について述べたが、本発明の冷凍庫は水分の
分離や組織の破壊を抑えて冷凍保存することが好ましい
食品以外の物品についても使用可能である。In each of the above embodiments, the frozen storage of fresh food products has been mainly described. However, the freezer of the present invention is applicable to articles other than foods which are preferably stored in a frozen state while suppressing separation of water and destruction of tissue. Can also be used.
【００２３】[0023]
【発明の効果】本発明は、以上述べた如く、冷凍庫の内
部空間に静磁場を発生させると共に、該静磁場内に位置
した物体に対して、静磁場の磁界強度に応じて決定され
る所定周波数の電磁波を連続的または間欠的に照射し、
該物体に含まれる水分子を構成する水素原子核に核磁気
共鳴を生じさせて水分の氷結温度を降下させ、通常以下
の氷結温度で冷凍するようにしたので、食品等を冷凍保
存する際の水分の分離や組織の破壊を抑え、食品の鮮度
や風味を損なわずに冷凍できる。According to the present invention, as described above, a static magnetic field is generated in the internal space of a freezer, and a predetermined object determined according to the magnetic field strength of the static magnetic field is applied to an object located in the static magnetic field. Irradiates electromagnetic waves of frequency continuously or intermittently,
Nuclear magnetic resonance is generated in hydrogen nuclei constituting water molecules contained in the object to lower the freezing temperature of water, and the water is frozen at a freezing temperature lower than normal. Can be frozen without deteriorating the freshness and flavor of food, while minimizing the separation and destruction of tissue.
【００２４】また、冷凍庫の内部空間の空気または外部
の空気を回収し高性能フィルタでろ過・無菌化して前記
内部空間に供給する空気無菌化手段を付設し、物体を冷
凍庫内に収容前及び収容後に空気無菌化手段を作動さ
せ、冷凍庫内を無菌化した後、空気無菌化手段を停止
し、冷凍を開始するようにしたので、庫内への細菌の進
入に伴う食品の劣化を防止でき、特に、食品を冷凍させ
ずに低温で保存する場合に有利である。Further, air sterilization means for collecting air in the internal space of the freezer or outside air, filtering and sterilizing the same with a high-performance filter and supplying the air to the internal space is provided, and before and after storing the object in the freezer. After activating the air sterilization means later, after sterilizing the freezer, the air sterilization means was stopped and freezing was started, so that deterioration of foods due to the invasion of bacteria into the refrigerator can be prevented, This is particularly advantageous when the food is stored at a low temperature without being frozen.
【図１】本発明第１実施形態の冷凍庫を示す概略図であ
る。FIG. 1 is a schematic view showing a freezer according to a first embodiment of the present invention.
【図２】本発明第２実施形態の冷凍庫を示す概略図であ
る。FIG. 2 is a schematic view showing a freezer according to a second embodiment of the present invention.
【図３】本発明の冷凍方法により冷凍された食品を示す
模式的な部分断面図である。FIG. 3 is a schematic partial sectional view showing a food frozen by the freezing method of the present invention.
【図４】従来の方法で冷凍された食品を示す模式的な部
分断面図である。FIG. 4 is a schematic partial sectional view showing a food frozen by a conventional method.
１，２１ 冷凍庫 ２ 断熱材 ３ 内部空間 ４ 冷凍装置 ５ 静磁場発生手段 ６ 電磁波発生装置 ２２ 空気無菌化手段 1, 21 Freezer 2 Insulation material 3 Internal space 4 Refrigerator 5 Static magnetic field generating means 6 Electromagnetic wave generating device 22 Air sterilization means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 後藤 浩 東京都台東区入谷一丁目14番９号 日本 エアーテック株式会社内 (72)発明者 岡本 守 東京都台東区入谷一丁目14番９号 日本 エアーテック株式会社内 (56)参考文献 特開 平３−241689（ＪＰ，Ａ) 特開 平11−276138（ＪＰ，Ａ) 特開 平７−274918（ＪＰ，Ａ) 建築設備と配管工事，1998，Ｖｏｌ. 36，Ｎｏ．12，ｐ．44−47 (58)調査した分野(Int.Cl.7，ＤＢ名) A23L 3/36 ＪＩＣＳＴファイル（ＪＯＩＳ) 特許ファイル（ＰＡＴＯＬＩＳ) 実用ファイル（ＰＡＴＯＬＩＳ)──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Goto 1-14-9 Iriya, Taito-ku, Tokyo Japan Airtech Co., Ltd. (72) Mamoru Okamoto 1-14-9 Iriya, Taito-ku, Tokyo Japan Inside Airtech Co., Ltd. (56) References JP-A-3-241689 (JP, A) JP-A-11-276138 (JP, A) JP-A-7-274918 (JP, A) Building equipment and plumbing, 1998 36, no. 12, p. 44-47 (58) Field surveyed (Int. Cl. 7 , DB name) A23L 3/36 JICST file (JOIS) Patent file (PATOLIS) Practical file (PATOLIS)
Claims (4)
と共に、該静磁場内に位置した物体に対して、静磁場の
磁界強度に応じて決定される所定周波数の電磁波を連続
的または間欠的に照射し、該物体に含まれる水分子を構
成する水素原子核に核磁気共鳴を生じさせて水分の氷結
温度を降下させ、通常以下の氷結温度で冷凍することを
特徴とする核磁気共鳴現象を利用した冷凍方法。A static magnetic field is generated in an internal space of a freezer, and an electromagnetic wave of a predetermined frequency determined according to the magnetic field strength of the static magnetic field is continuously or intermittently applied to an object located in the static magnetic field. To cause nuclear magnetic resonance in hydrogen nuclei constituting water molecules contained in the object to reduce the freezing temperature of water, and to freeze at a normal freezing temperature or lower, a nuclear magnetic resonance phenomenon characterized by Freezing method used.
該空間内を冷却すると共に所定の低温に維持可能な冷却
手段を備えた冷凍庫において、該冷凍庫の内部空間に静
磁場を発生させる静磁場発生手段と、該静磁場内に位置
した物体に対し静磁場の磁界強度に応じて決定される所
定周波数の電磁波を連続的または間欠的に照射する電磁
波照射手段とを備えたことを特徴とする核磁気共鳴現象
を利用した冷凍庫。2. An internal space surrounded by a heat insulating material,
In a freezer provided with a cooling means capable of cooling the space and maintaining a predetermined low temperature, a static magnetic field generating means for generating a static magnetic field in the internal space of the freezer, and a static magnetic field for an object located in the static magnetic field. A freezer using a nuclear magnetic resonance phenomenon, comprising: electromagnetic wave irradiation means for continuously or intermittently applying an electromagnetic wave having a predetermined frequency determined according to the magnetic field strength of the magnetic field.
気を回収し高性能フィルタでろ過・無菌化して前記内部
空間に供給する空気無菌化手段を付設してなる請求項２
記載の核磁気共鳴現象を利用した冷凍庫。3. An air sterilizing means for collecting air in the internal space of the freezer or outside air, filtering and sterilizing the air with a high-performance filter, and supplying the air to the internal space.
A freezer utilizing the nuclear magnetic resonance phenomenon described.
を冷凍庫内に収容前及び収容後に空気無菌化手段を作動
させ、冷凍庫内を無菌化した後、空気無菌化手段を停止
し、冷凍を開始する請求項１記載の核磁気共鳴現象を利
用した冷凍方法。4. The freezer according to claim 3, wherein the air sterilizing means is operated before and after storing the object in the freezer, and after sterilizing the inside of the freezer, the air sterilizing means is stopped, and freezing is performed. A refrigeration method utilizing nuclear magnetic resonance phenomenon according to claim 1 to be started.
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| JP11142405A JP3074565B1 (en) | 1999-05-21 | 1999-05-21 | Refrigeration method and freezer using nuclear magnetic resonance phenomenon |
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| JP11142405A JP3074565B1 (en) | 1999-05-21 | 1999-05-21 | Refrigeration method and freezer using nuclear magnetic resonance phenomenon |
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