JP2000201663A - Defroster for frozen food, and defrosting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a defroster for frozen foods, capable of rapidly defrosting them while sufficiently keeping their freshness by simple facilities, and also to provide a method for defrosting frozen foods. SOLUTION: This defroster 1 defrosts a frozen food A held in a refrigerator 2 kept at a given humidity, while sufficiently keeping its freshness, provided with (A) a blower 3 which circulates air in the refrigerator 2, (B) a heater 4 which heats air in the refrigerator 2, and (C) an ion generator 5 having an ion generating plate 24 coated with powdered tourmaline, onto which air circulated by the blower 3 is blown.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frozen product thawing apparatus for thawing frozen products stored in a storage while maintaining freshness.

[0002]

2. Description of the Related Art When water is electrolyzed, water molecules H ₂ O are
It is separated into hydrogen ions (H ⁺ ) and hydroxyl ions (OH). Also, hydroxyl ions (OH) combine with surrounding water,
It becomes a negative ion which is a surface active substance called hydroxyl ion (H ³ O ²⁻ ). This negative ion has a cell activity, an antibacterial action, and a bactericidal action, and is known to be useful for thawing and maintaining freshness of frozen products. In the conventional electrostatic induction method (Japanese Patent Publication No. Hei 5-77387), which is a thawing method using negative ions, a negative electron generator is used. In this negative electron generator, the inner surface of the storage is insulated. A stainless plate attached through the body is used as an electrode, and a high voltage is applied to the electrode to generate static electricity inside. Then, the hydroxyl ions (negative ions) generated by the static electricity are applied to the frozen product together with the heated circulation air, and the frozen product is thawed while maintaining the freshness of the frozen product.

[0003]

In a conventional frozen product thawing apparatus using such an electrostatic induction method, since a high voltage is applied, the inside of the storage cannot be washed with water due to its insulation property. There was a problem. Further, there is a problem that the worker receives an electric shock due to static electricity through the handle of the heat insulating door.

The present invention has been made by focusing on the fact that tourmaline, which is a mineral, has the characteristics of a twisted permanent magnet and that the powder has a high static electricity. To provide a frozen material thawing apparatus and a frozen material thawing method that enable rapid thawing while sufficiently maintaining freshness,
That is the purpose.

[0005]

SUMMARY OF THE INVENTION A frozen product thawing apparatus according to the present invention provides a frozen product stored in a storage having a predetermined humidity.
In a frozen thawing device that thaws while maintaining freshness,
Blowing means for circulating the air in the storage, heating means for raising the temperature of the air in the storage, and ion generating means arranged so that the circulating air by the blowing means is blown, the ion generating means And an ion generating plate on which tourmaline powder is spread on a surface to which circulating air is blown.

According to this configuration, the circulating air in the storage is sprayed on the ion generating plate on which the tourmaline powder is spread, so that each particle has positive and negative electrodes and is charged with static electricity. Stone powder electrolyzes water molecules contained in the circulating air to generate negative ions (hydroxyl ions). In other words, the physical stimulus caused by the contact (wind) of the wet circulating air with the tourmaline powder and the physical stimulus caused by the temperature difference between the circulating air and the tourmaline powder at that time cause the electric stimulus to be generated in the same manner as a piezo element. Stone powder is charged with high voltage static electricity and generates a large amount of negative ions. A large amount of negative ions generated in this way carry the circulating air to reach the frozen material, enter the cells of the frozen material, and activate the cells. In other words, the surface active action and antibacterial action (bactericidal action) of negative ions
Can be applied to the frozen material. In addition, since tourmaline powder is spread on the ion generating plate, it is easy to handle and can be easily installed with a sufficient degree of freedom. In addition, since the tourmaline powder emits far-infrared rays that promote thawing, it is preferable that the ion generating means be disposed in the storage. The temperature raising means may be an electric heater or the like, or may be a radiator having a heat source such as a hot water boiler or a steam boiler outside.

In this case, it is preferable that the ion generating means is constituted by a plurality of ion generating plates attached to the inner surface of the storage.

[0008] According to this configuration, the contact area between the tourmaline powder spread on the ion generating plate and the circulating air can be increased, so that a larger amount of negative ions can be generated. In addition, since the frozen material is surrounded by tourmaline powder that emits far-infrared rays, the center can be efficiently thawed by far-infrared rays. That is, the thawing speed of the surface portion and the thawing speed of the central portion of the frozen material can be made relatively uniform, and the thawing can be performed in a short time without setting the temperature of the circulating air high. Therefore, rapid thawing becomes possible while maintaining the freshness of the frozen product. In addition, it is preferable that the ion generating plate is provided along the entire inner surface of the storage, that is, the side wall surface as well as the top surface and the floor surface.

Similarly, it is preferable that the ion generating means is connected to the discharge side of the air blowing means and has a duct composed of or attached to a plurality of ion generating plates.

According to this configuration, the duct itself is formed of an ion generating plate, or the ion generating plate is internally attached to the formed duct. In the duct, the flow velocity of the circulating air increases and the flow is stabilized, so that the circulating air and the ion generating plate can be brought into contact with each other efficiently and over a wide area. Therefore, a large amount of negative ions can be generated stably. In addition, the cross-sectional shape of the duct may be square or circular. In addition, when installing the duct in the storage, it is possible to impregnate tourmaline powder on the outer surface of the duct,
preferable.

In this case, it is preferable that the duct has an opening on the inflow side at the upper part of the storage and an opening on the outflow side at the lower part of the storage.

According to this structure, the circulating air can be smoothly circulated from the upper part to the lower part of the storage, preventing a short circuit of the circulating air and dispersing the generated negative ions uniformly in the storage. be able to.

On the other hand, it is preferable that the duct is divided into a plurality of duct passages by a partition formed of or internally bonded to an ion generating plate.

According to this configuration, the circulating air and tourmaline powder can be separated without increasing the space occupied by the duct.
The contact can be made with a much larger area and forcibly.

In this case, the outflow side of the plurality of duct passages is
It is preferable that the storage is opened stepwise from the middle upper part to the lower part.

According to this configuration, the circulating air that has passed through the duct can be smoothly guided to the frozen material stored in the storage, and the generated negative ions (heat) can efficiently act on the frozen material.

In these cases, it is preferable that the temperature raising means is provided between the blowing means and the ion generating means.

According to this configuration, the circulating air heated for thawing can be brought into contact with the tourmaline powder immediately after the temperature is raised, and the temperature difference (large) can further promote the generation of negative ions. can do. Further, it is possible to prevent the hot air immediately after the heating by the heating means from passing through the blowing means.

Further, another frozen product thawing device of the present invention is a frozen product thawing device for thawing frozen material stored in a storage while maintaining freshness, wherein a blowing means for circulating air in the storage is provided. And a temperature raising means for raising the temperature of the air in the storage, a water tank for immersing the frozen material, and an ultrasonic generator for ultrasonically vibrating the solvent filled in the water tank.

According to this structure, the frozen material can be vibrated at the molecular level through the solvent, so that the temperature of the solvent can be increased and the temperature of the frozen material can be evenly increased to the center thereof. Can be. Incidentally, the ultrasonic vibration frequency (frequency) is about 27MH _Z are preferred.

[0021] In this case, it is preferable that the apparatus further comprises a water purification means for purifying the solvent and supplying the water to the water tank, and the water purification means preferably performs the ionization treatment by passing the solvent through the tourmaline powder.

According to this configuration, the water or the salt water as the solvent passes through the tourmaline powder to generate negative ions (hydroxyl ions), and the frozen material can be immersed in the solvent containing the negative ions. As a result, the negative ions act on the frozen material to be thawed, and the freshness can be sufficiently maintained.

In these cases, it is preferable that tourmaline powder is spread on the inner surface of the water tank.

According to this configuration, since negative ions can be generated from the inner surface of the water tank, the absolute number of negative ions in the solvent can be increased.

In these cases, it is preferable to further comprise a solvent circulation means for circulating the solvent filled in the water tank.

According to this configuration, the solvent circulates to bring the solvent into contact with the tourmaline powder (physical stimulation by the flow of the solvent).
Is promoted, and a large amount of negative ions can be generated.

In this case, it is preferable that the solvent circulating means circulates the solvent by pumping up the solvent and spraying it on the frozen material.

According to this configuration, when the surface temperature of the frozen product is excessively increased by the circulating air, the surface of the frozen product can be appropriately cooled by the solvent containing negative ions, and the freshness of the frozen product can be improved. Can be held.

In these cases, it is preferable that a frozen product immersed in the water tank is housed in a watertight manner, and a package permeable to hydroxyl ions is further provided.

According to this configuration, collapse of the frozen product caused by direct contact between the frozen product and the solvent can be prevented without impairing the temperature increasing effect by the ultrasonic vibration. Further, negative ions in the solvent can act on the frozen material.

In this case, it is preferable that tourmaline powder is spread on the inner surface of the package.

According to this configuration, negative ions generated in the package can also act on the frozen material.

Furthermore, another frozen product thawing apparatus of the present invention
A thawing device for circulating air in the storage, a heating means for raising the temperature of the air in the storage, and a storage in a frozen product thawing apparatus for thawing the frozen product stored in the storage while keeping the freshness. Mist supply means for supplying mist into the storage.

According to this configuration, when the mist is supplied into the storage by the mist supply means, the mist rides on the circulating air and comes into contact with the frozen material, and adheres to the surface of the frozen material as frost (frost column). In this case, the heat transfer coefficient between the frost column and the frozen product is sufficiently larger than the heat transfer coefficient between the heated circulation air and the frozen product, and the frozen product is passed through the frost column. In addition, since the frozen material comes into contact with the circulating air with a large surface area, the temperature of the frozen material can be efficiently raised to the inside thereof. In addition, the freshness of the frozen material surface is not impaired by the frost column.

In this case, it is preferable that the intake side of the blowing means is opened at the upper part of the storage, and the supply side of the mist supply means is opened at the lower part of the storage.

According to this configuration, the mist can be efficiently floated around the frozen material, and the generation of frost can be promoted.

In these cases, it is preferable that the temperature of the mist is approximately 5 ° C.

According to this configuration, when the mist comes into contact with the surface of the frozen material, the mist is cooled by the frozen material and freezes, so that the frost column can be reliably generated.

The method for thawing a frozen product according to the present invention is characterized in that humid air sprayed on tourmaline powder is circulated in the storage, and the frozen air in the storage is thawed by the humid air.

According to this configuration, a large amount of negative ions are generated by spraying the moist air onto the tourmaline powder, and the moist air containing the negative ions generates
Because the frozen material can be thawed, the surface activity and antibacterial action (bactericidal action) of negative ions during thawing
Can be applied to the frozen material.

Another method for thawing a frozen product according to the present invention is to install a water tank in a storage, immerse the frozen material in a solvent filled in the water tank, and ultrasonically vibrate the solvent to remove the frozen material. Defrosting is characterized.

According to this structure, the frozen material can be vibrated at the molecular level through the solvent, so that the temperature of the solvent can be increased and the temperature of the frozen material can be uniformly increased to the center. it can.

Further, another method for thawing the frozen material of the present invention comprises the steps of:
A mist is supplied into the storage to generate frost on the surface of the frozen product, and the frost is used as a heat transfer medium to defrost the frozen product.

According to this configuration, since the frozen material comes into contact with the circulating air with a large surface area via the frost column, the temperature of the frozen material can be efficiently raised without deteriorating the freshness of the surface of the frozen material.

[0045]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a frozen product thawing apparatus and a frozen product thawing method according to an embodiment of the present invention. 1 and 2 show the entire structure of the frozen product thawing apparatus. As shown in FIG. 1, the frozen product thawing apparatus 1 includes a storage 2 for storing a frozen product A to be thawed, a thawing fan (blowing means) 3 for circulating air in the storage 2, and a storage. An electric heater (heating means) 4 for raising the temperature of the circulating air in 2, a pair of ion generators (ion generating means) 5, 5 composed of a blowing duct 6 connected to the thawing fan 3, and a storage 2. The apparatus includes a pair of mist generators (mist generating means) 7 and 7 for supplying mist, and a refrigerator 8 for keeping the frozen product A after thawing.

The frozen product A is placed on a cart 9 having a plurality of storage shelves 10 and introduced into the storage 2, where it is exposed to the circulating air in the storage 2 by the thawing fan 3 and thawed. At this time, the circulating air is heated by the electric heater 4, passes through the ion generator 5, and comes into contact with the frozen product A while containing negative ions. Further, the mist supplied from the mist generator 7 is mixed into the circulating air, and the mist comes into contact with the frozen material A to form frost, thereby promoting the thawing of the frozen material A. When the thawing of the frozen material A is completed after a predetermined thawing time has elapsed, the thawing fan 3, the electric heater 4 and the mist generator 7 are stopped, and the refrigerator 8 is started in place of them, and the storage 2 is kept cool. Shift to (keep freshness) operation.

The storage 2 is a movable type with wheels, and is constituted by a stainless steel cabinet sandwiched with a heat insulating material. At the front of the storage 2, there is provided a heat insulating door 11 through which the frozen product A enters and exits via the above-described cart 9. On the outer surface of the storage 2, there is mounted a control panel 12 for integrally controlling the frozen product thawing apparatus 1 and the above-mentioned pair of left and right mist generators 7, and on the upper surface, a refrigerator 8 is mounted. ing. An operation panel is incorporated in the control panel 12 so that operating conditions such as the thawing temperature and the thawing time of the frozen product thawing apparatus 1 can be set. Further, on the front of the storage 2, located beside the heat insulating door 11,
A remote controller 13 for controlling the refrigerator 8 is attached, and the remote controller 13
It is possible to set the freshness holding temperature and the like.

The thawing fan 3 and the electric heater 4 are constituted by a unitized fan with a heater, and are arranged at upper portions along the both side wall surfaces on the short side of the storage 2. I have. Each set of three thawing fans (fans with heaters) 3 is housed in a chamber 15 connected to the above-mentioned air duct 6, and sucks air in the upper part of the storage 2 and discharges the air toward the air duct 6. I have. A germicidal lamp 14 is provided in the chamber 15 at a position downstream of the thawing fan 3.

Each ventilation duct 6 has a front plate 16, a rear plate 17 and a side plate 18, and a front plate 16 and a rear plate 1.
7 are provided with two partition plates 19, 19 parallel to each other to form three duct passages 20, 20, 20. The inlets 21 of the three duct passages 20 are opened (connected) to the chamber 15 side. The outlet 22 is opened substantially at the upper (middle upper), middle, and lower stages of the storage 2. The air discharged from the thawing fan 3 while being heated by the electric heater 4 flows from the chamber 15 into the three duct passages 2.
0, it is discharged from the upper, middle and lower stages of the storage 2 to defrost the frozen material A and return to the defrost fan 3 (circulation).

In this case, the front plate 1 constituting the air duct 6
6. The rear plate 17, the side plate 18, and the partition plate 19 are formed of a stainless plate, and an ion generating plate 24 is attached to the inner surface of each plate constituting the duct passage 20. The ion generating plate 24 is formed by spreading powder of tourmaline on the surface of an aluminum plate using an epoxy resin or the like as a binder, and using the tourmaline powder, water of circulating air having a predetermined humidity is used. To generate negative ions in the molecule.

That is, the tourmaline powder spread on the aluminum plate generates strong static electricity. When the tourmaline powder is exposed to wind having a temperature difference (circulating air), the tourmaline powder has a physical property of wind pressure and temperature difference. The stimulus discharges and electrolyzes water molecules contained in the circulating air. When the water molecules are electrolyzed, the water molecules (H ₂ O) are separated into hydrogen ions (H ⁺ ) and hydroxyl ions (OH). Further, the hydroxyl ions (OH) combine with the surrounding water to become hydroxyl ions (H ³ O ²⁻ ), which are negative ions that are surface active substances.

The negative ions thus generated have a cell activity, an antibacterial action, and a bactericidal action, and are known to be useful for thawing and maintaining freshness of the frozen product A. It is also known that tourmaline powder (tourmaline) emits far-infrared rays. Therefore, the circulating air that has passed through the air duct 6 contains a large amount of negative ions, and the circulating air containing the negative ions causes the frozen material to be thawed. Further, far infrared rays emitted from the ion generating plate directly act on the frozen material A to defrost it.

Therefore, in this embodiment, the ion generating plate 24 is further adhered to the outer surface of the front plate 16 and also to both long side surfaces and the top wall surface of the storage 2.
Further, although not shown, it is preferable that the ion generating plate 24 is also adhered to the inner surface of the chamber 15. Needless to say, tourmaline powder may be directly spread on the plate material constituting the blower duct 6 and the chamber 15. Further, the blower duct 6 may be a single duct passage 20 or a plurality of blower ducts 3 corresponding to each thawing fan 3. In any case, in order to make the thawing temperature in the storage 2 uniform, it is preferable that the downstream side of the ventilation duct 6 be opened to the lower part of the storage 2. It should be noted that reference numeral 25 in FIG.
Is a stainless steel net for protecting the chamber 15 and the air duct 6.

Each mist generator 7 is a so-called ultrasonic humidifier, and the suction side and the discharge side are opened through the round duct 27 to the inside of the storage 2. In this case, the suction side and the discharge side of the round duct 27 are actually a plurality (four) of branch ducts 27a on the storage side, and the plurality of branch ducts 27a are arranged at equal intervals in the horizontal direction, and It opens to the lower side of the air duct 6 (although it opens to the lower part of the air duct 6 in the figure). That is, the round duct 27 has a suction side and a discharge side on the storage 2
And the mist supplied is frozen A
So that it floats around.

That is, by providing the suction side of the thawing fan 3 and the discharge side of the mist generator 7 at a distance, the supplied mist is prevented from being sucked into the thawing fan 3 as much as possible, and I try to float. When the mist drifts around the frozen material A, the mist that contacts the frozen material A freezes as frost (frost column) on the surface of the frozen material A, and promotes heat transfer between the circulating air and the frozen material A. In order to form the frost column well, it is preferable that the mist particles are small, and the temperature is preferably about 5 ° C.

In the storage 2, a plurality of shower heads 28 for spraying cold water on the frozen material A are appropriately disposed. The shower head 28 is connected to a shower pipe 29 introduced from outside the storage 2, and when the surface temperature of the frozen product A that is heated by contacting the circulating air is excessively high,
Cold water is sprinkled on the frozen material A for a predetermined time to cool it. At an appropriate position in the storage 2, a temperature sensor 30 for detecting an ambient temperature of the frozen product A is provided, and when the temperature sensor 30 detects a predetermined temperature, the control panel 12 moves to a base of the shower pipe 29. The provided electromagnetic valve 31 is opened to supply cold water to the shower head 28.

On the other hand, water supplied to the mist generator 7 and the shower head 28 is supplied from a water supply system through a water purifier 32. The water purifier 32 has a container filled with tourmaline powder, and ionizes the water that has passed. In other words, the water that has passed through contains negative ions generated by tourmaline powder,
It can act on the frozen material A via mist and water spray. The water cooler 3 is located upstream of the water purifier 32.
The water cooled to approximately 5 ° C. by the water cooler 33 is supplied to the mist generator 7 and the shower head 28 through the water purifier 32.

More specifically, a pump 34 is provided on the downstream side of the water purifier 32, and on the downstream side of the pump 34,
Solenoid valves 31 and 36 are interposed at the branches of the shower pipe 29 and the mist pipe 35, respectively. The control panel 12
Based on the detection result of the temperature sensor 30 and the water level sensor of the mist generator (tank) 7, the pump 34 and the solenoid valves 31 and 36 are appropriately driven to discharge water containing negative ions into the mist generator 7. And to the shower head 28. Instead of the water (fresh water), a thin salt water (seawater) may be supplied from a water supply system. By supplying the salt water, the salted frozen product A can be desalted to some extent during the thawing process.

In the frozen product thawing apparatus 1 of the embodiment, after the frozen material A is carried into the storage 2, the thawing fan 3, the electric heater 4 and the mist generator 7 are appropriately driven, and the frozen material A is
Thaw for the time corresponding to. When the decompression operation is completed,
The thawing fan 3, the electric heater 4, and the mist generator 7 are stopped, and instead, the refrigerator 8 is driven to shift to the cool keeping operation. In this case, since the fan of the refrigerator 8 operates,
Air containing negative ions is circulated in the storage 2 by the fan. For this reason, even in the cool state,
Negative ions can act on the frozen material A after thawing.

As described above, according to the present embodiment, the air in the storage 2 is circulated by passing through the air duct 6 with the ion generating plate 24 attached thereto.
A large amount of negative ions are generated from the ion generating plate 24,
This can be mixed with circulating air to defrost the frozen material A. Thereby, the negative ions enter the frozen material A and activate the cells. For this reason, the freshness of the frozen material A to be thawed is not impaired.
The thawing speed can be increased.

On the other hand, far-infrared rays are transmitted from the ion generating plate 24 disposed in the storage 2 so as to surround the frozen material A.
And the temperature of the frozen material A is uniformly increased to the inside thereof. For this reason, the frozen material A is uniformly thawed to the inside, so that the temperature of the circulating air can be lowered and the defrosting speed can be increased accordingly.

Further, when the frozen material A is thawed, the mist is introduced into the storage 2 so that the mist comes into contact with the frozen material A and forms a frost column, so that the contact area between the circulating air and the frozen material A is markedly increased. As a result, the heat transfer is promoted, and the frozen material A can be uniformly thawed to the inside in a short time. According to the test operation by the frozen material thawing apparatus 1 of the embodiment, when the thawing is performed at the thawing set temperature of -5 ° C, the frozen material is in a semi-thawed state in which the frozen material is softened, unlike the conventional one. Was confirmed.

More specifically, the frozen product A is homogenized by the cell activating action, antibacterial and bactericidal action of negative ions, the action of increasing the temperature of far-infrared rays emitted from tourmaline, and the action of promoting heat transfer by frost columns. Rapid thawing becomes possible,
Deterioration and discoloration of the frozen material A are suppressed. In addition, drying of the frozen material A and outflow of cell water due to destruction of the cell membrane are suppressed.

Here, with reference to FIG. 3, a description will be given of a test result obtained by thawing “madara (a plurality of frozen and integrated madara)” as the frozen material A. The sample “Madara” had a core temperature of −30.8 ° C., a surface temperature of −27.4 ° C., and a set thawing temperature of 0 to 2 ° C. As shown in the figure, in the process of changing the thawing time, the temperature difference between the core temperature and the surface temperature was extremely small, and it was confirmed that the thawing of the frozen material A was evenly performed to the inside. Also, the thawing time is 1
After 5 hours, it was confirmed that thawing was completed, in which "madara" could be easily loosened one by one. that time,
The core temperature of “Madara” was −2.3 ° C. and the surface temperature was −1.0 ° C.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the frozen material A is thawed while being immersed in water (or salt water). FIG. 3 conceptually shows the structure of the second embodiment, and is the same as the first embodiment except for the structure around the water tank in which the frozen product A is immersed. That is, in the second embodiment,
The water tank 38 is introduced into the storage 2 in place of the cart 9 of the first embodiment.

In this case, a water tank 38 is provided in the storage 2. More specifically, although not shown, the water tank 38
Is mounted with a caster, and the water tank 38 is configured to be movable. Further, the water tank 38 is connected to the branch pipe 39 branched from the shower pipe 29 by a one-touch via a pipe joint 40. That is,
Water containing negative ions that have passed through the water purifier 32 is supplied to the water tank 38.

The water tank 38 is provided with an ultrasonic generator 41 for ultrasonically vibrating the water filled therein.
The ultrasonic vibrations through the water by vibrating the frozen product A at the molecular level is for heating the frozen product A, the frequency is set to approximately 27MH _Z. When water is ultrasonically vibrated by the ultrasonic generator 41, the frozen material A is ultrasonically vibrated through the water, and the temperature of the frozen material A uniformly rises to the inside.

On the other hand, the above-mentioned ion generating plate 24 is also attached to the inner surface of the water tank 38. Thereby, the negative ions contained in the water in the water tank 38 can be increased. By the way, the frozen material A immersed (floating) in water containing a large amount of negative ions may be immersed directly in water. It is preferable to immerse in 42. In this case, the package 42 may be a soft material (bag) or a hard material (case), but is preferably a material that transmits negative ions. Although not shown, a package in which tourmaline powder is spread on the inner surface may be used.

It is to be noted that the cold water to the shower head 28 may be pumped from the water tank 38 and supplied. That is, the water in the water tank 38 is sprayed on the frozen material A, and the water in the water tank 38 is circulated by the water spray. In such a case, the water in the water tank 38 circulates as appropriate, and the generation of negative ions is promoted by physical stimulation based on the flow of the water, and the part that is on the water surface is also sprayed through the water,
Can be exposed to negative ions.

As described above, according to the second embodiment, since the temperature of the frozen material A is increased by oscillating the ultrasonic wave in addition to the circulating air, the frozen material A is uniformly thawed to the inside. be able to. Therefore, the frozen product A can be rapidly thawed without deteriorating its freshness.

It is needless to say that the frozen product thawing apparatus of the present invention can be applied to so-called refrigerators, showcases, open cases, cool boxes and the like.

[0072]

As described above, according to the frozen product thawing apparatus and the frozen material thawing method of the present invention, a large amount of negative ions can be generated in the circulating air. Action (bactericidal action)
It can effectively act on the frozen material during thawing. Therefore, the frozen product can be quickly thawed while sufficiently maintaining the freshness of the frozen product. Further, since the negative ions are generated by the ion generating plate on which the tourmaline powder is spread, the ion generating means can be easily configured.

Further, according to the other frozen thawing apparatus and the frozen thawing method of the present invention, since the temperature of the frozen material can be raised by ultrasonic vibration, the temperature of the frozen material can be uniformly and quickly raised to the inside. be able to. Therefore, the frozen product can be quickly thawed while sufficiently maintaining the freshness of the frozen product.
Further, the frozen material can be ultrasonically vibrated with relatively simple and safe equipment.

Furthermore, according to the other frozen thawing apparatus and the frozen thawing method of the present invention, the frozen matter can be efficiently transferred to the inside of the frozen matter without deteriorating the freshness of the surface of the frozen matter due to the frost column on the frozen surface caused by the mist. The temperature can be raised well. Therefore, the frozen product can be quickly thawed while sufficiently maintaining the freshness of the frozen product. The mist can be supplied by a simple device such as an ultrasonic humidifier.

[Brief description of the drawings]

FIG. 1 is a front view of a frozen product thawing apparatus according to a first embodiment of the present invention.

FIG. 2 is a plan view of the frozen product thawing apparatus according to the first embodiment.

FIG. 3 is a diagram showing test results obtained by the frozen product thawing apparatus of the first embodiment.

FIG. 4 is a structural diagram conceptually showing the structure of a frozen product thawing apparatus according to a second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 frozen product thawing device 2 storage 3 thawing fan 4 electric heater 5 ion generator 6 blast duct 7 mist generator 20 duct passage 21 inflow 22 outflow 24 ion generator 28 showerhead 32 water purifier 38 water tank 41 ultrasonic generation Container 42 Package A Frozen

Claims (20)

[Claims] 1. A frozen product thawing apparatus for thawing a frozen product stored in a storage having a predetermined humidity while maintaining freshness, wherein: a blowing means for circulating air in the storage; Temperature rising means for raising the temperature of the air, and ion generating means arranged so that the circulating air is blown by the blowing means. The ion generating means spreads the tourmaline powder on the surface to which the circulating air is blown. A frozen product thawing device comprising an ion generating plate attached thereto. 2. The apparatus for thawing a frozen product according to claim 1, wherein said ion generating means comprises a plurality of said ion generating plates attached to an inner surface of said storage. 3. The frozen product according to claim 1, wherein the ion generating means is connected to a discharge side of the air blowing means and has a duct constituted by or bonded to a plurality of the ion generating plates. Thawing device. 4. The frozen product thawing apparatus according to claim 3, wherein the duct has an inflow side opening at an upper portion of the storage and an outflow side opening at a lower portion of the storage. 5. The apparatus for thawing a frozen product according to claim 3, wherein the duct is divided into a plurality of duct passages by a partition wall formed or adhered to the ion generating plate. 6. The frozen product thawing apparatus according to claim 5, wherein the outlet sides of the plurality of duct passages open stepwise from an upper middle part to a lower middle part of the storage. 7. The apparatus for thawing a frozen product according to claim 1, wherein said temperature raising means is interposed between said blowing means and said ion generating means. 8. A frozen product thawing apparatus for thawing frozen material stored in a storage while keeping freshness, wherein: a blowing means for circulating air in the storage; and a temperature rising air in the storage. A thawing device for immersing a frozen product; and an ultrasonic generator for ultrasonically vibrating a solvent filled in the water bath. 9. A water purifying means for purifying the solvent and supplying it to the water tank, wherein the water purifying means ionizes the solvent by passing the solvent through tourmaline powder. 3. The frozen matter thawing apparatus according to 1. 10. The apparatus for thawing a frozen product according to claim 8, wherein tourmaline powder is spread on an inner surface of the water tank. 11. The apparatus according to claim 9, further comprising a solvent circulating means for circulating the solvent filled in the water tank.
Or the frozen matter thawing apparatus according to 10. 12. The frozen matter thawing apparatus according to claim 11, wherein the solvent circulating means circulates the solvent by pumping up the solvent and spraying it on the frozen matter. 13. The frozen product according to claim 8, further comprising a package that accommodates the frozen product immersed in the water tank in a water-tight manner and allows hydroxyl ions to pass therethrough. Thawing device. 14. The frozen product thawing apparatus according to claim 13, wherein tourmaline powder is spread on an inner surface of the package. 15. A frozen product thawing apparatus for thawing a frozen product stored in a storage while keeping freshness, wherein: a blowing means for circulating air in the storage; And a mist supply means for supplying mist into the storage. 16. The storage device according to claim 15, wherein an intake side of the blower is open at an upper part of the storage, and a supply side of the mist supply unit is open at a lower part of the storage. Frozen thawing equipment. 17. The apparatus for thawing a frozen product according to claim 15, wherein the temperature of the mist is approximately 5 ° C. 18. A method for thawing a frozen product, comprising circulating wet air sprayed on tourmaline powder in a storage, and thawing the frozen product in the storage using the wet air. 19. A frozen product, wherein a frozen tank is set in a storage, and the frozen product is thawed by immersing the frozen material in a solvent filled in the tank and ultrasonically vibrating the solvent. Decompression method. 20. A method for thawing a frozen product, wherein a mist is supplied into a storage to generate frost on the surface of the frozen product, and the frost is used as a heat transfer medium to defrost the frozen product.