JP6854556B1 - Freezer and frozen product manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freeze an article faster at a lower temperature. SOLUTION: In a freezer for immersing and freezing an article, in which a cooling medium used in a liquid state is stored in a container and cooled, the container is cooled by being driven by electricity supplied via an electric wire. The vibrator and the electric wire are stored so as to expose the vibrator that vibrates the container in contact with the side in contact with the medium and the portion of the vibrator that is in contact with the container. A shorter cylinder and a rubber elastic body that is filled inside the cylinder, seals the wire inside the cylinder so that it does not come into contact with the cooling medium, and holds the transducer and wire so that it does not come into contact with the inner surface of the cylinder. Including with the holding material. [Selection diagram] Fig. 2

Description

The present invention relates to a method for producing a freezer and a frozen product, and more particularly to a method for producing a freezer and a frozen product that freezes such as food, cosmetics, or medical articles.

The freezer includes a brine-type freezer in which an object is immersed in a liquid cooled to below freezing point to freeze it.

Conventionally, a brine composition has been proposed, which comprises using a mixture containing ethyl alcohol, water and propylene glycol as a brine for food (see, for example, Patent Document 1).

Further, in order to lower the freezing temperature of an aqueous solution containing an aliphatic alcohol having 1 to 3 carbon atoms, at least one compound selected from the group consisting of aromatic carboxylic acid salts and nitrites is blended. A coolant composition characterized by the above has also been proposed (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 10-183109 Japanese Unexamined Patent Publication No. 9-227859

However, the brine composition of Patent Document 1 and the coolant composition of Patent Document 2 are considered to be used at about -40 degrees Celsius, although safety is taken into consideration.

The present invention has been made in view of this situation and allows the article to be frozen faster at a lower temperature.

The freezer on the first side of the present invention is a cooling medium for immersing and freezing an article, and is a freezer in which a cooling medium used in a liquid state is stored in a container and cooled, and is supplied via an electric wire. The vibrator and the electric wire are stored so as to expose the vibrator that is driven by electricity and vibrates the container in contact with the side in contact with the cooling medium of the container and the portion of the vibrator in contact with the container, and the longitudinal direction of the vibrator. A cylinder that is longer than the length of the cylinder and shorter than the depth of the container, and the inside of the cylinder is filled so that the electric wire does not come into contact with the cooling medium inside the cylinder and vibrates so that it does not come into contact with the inner surface of the cylinder. Included as a holding material for rubber elastic bodies that hold children and wires.

The cooling medium can contain an aqueous ethanol solution, a powder obtained by pulverizing a product obtained by thermally decomposing plant seeds at 400 degrees Celsius or more and less than 500 degrees Celsius, and a water-soluble silicon compound.

The powder can be 0.5% by weight to 1.0% by weight with respect to the aqueous ethanol solution, and the water-soluble silicon compound can be 0.5% by weight to 1.0% by weight with respect to the aqueous ethanol solution. ..

When the powder is dispersed in an aqueous ethanol solution, the powder can be kept in a suspended state for 24 hours or more in a standing state.

The powder may have a representative value of 10 μm or less, which indicates the center of the particle size distribution.

The powder may contain 15% to 19% by weight potassium and 1% to 3% by weight phosphorus.

The powder can generate a zeta potential of minus 0.5 mV in a solution at pH 7.

The powder can be made by crushing a product obtained by thermally decomposing seeds, which are beans.

The aqueous ethanol solution may contain less than 60% by weight of ethanol.

A timer for supplying electricity to the oscillator via the electric wire for a predetermined time can be further provided.

When the holding material is filled, it can be hardened to become a rubber elastic body.

The holding material can be a silicone sealant.

The oscillator can be made to vibrate by the piezoelectric element.

The method for producing a frozen product according to the second aspect of the present invention is to mix a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 to 500 degrees Celsius with an aqueous ethanol solution, and water-soluble in the aqueous ethanol solution. A sex silicon compound is mixed, an aqueous ethanol solution in which powder and a silicon compound are mixed is placed in a cooling container and cooled to a temperature lower than 0 ° C. in a liquid state, the article is placed in a sealed container, and the cooling container is vibrated. Then, the article placed in the sealed container is immersed in a cooled aqueous ethanol solution placed in a vibrating cooling container and frozen.

0.5% by weight to 1.0% by weight of powder can be mixed with an aqueous ethanol solution, and 0.5% by weight to 1.0% by weight of a water-soluble silicon compound can be mixed with an aqueous ethanol solution. it can.

As described above, according to the present invention, the article can be frozen faster at a lower temperature.

It is a figure explaining the appearance of the freezer of one Embodiment of this invention. It is sectional drawing of the freezer 1. It is a figure which shows the example of the structure of the vibrating part 51. It is a figure which shows the powder which has the particle diameter of about 5 μm. It is a figure which shows the example of the result of the component analysis of a powder. It is a figure which shows the particle size distribution of a powder. It is a figure which shows the state when the powder obtained by crushing the product which pyrolyzed the seed of a plant is mixed with the aqueous ethanol solution. It is a figure which shows the state of the ethanol aqueous solution mixed with the powder when 24 hours have passed in the stationary state. It is a flowchart which shows the procedure of manufacturing a frozen product. It is a figure which shows the change of the core temperature with respect to time when the beef shoulder loin block meat is frozen. It is a figure which shows the change of the core temperature with respect to time when the yellowtail fillet is frozen. It is a figure which shows the change of the core temperature with respect to time when the chicken thigh is frozen. It is a figure which shows the drip when the raw mackerel frozen in a general household freezer is thawed. It is a figure which shows the drip when the raw mackerel frozen in the freezer 1 is thawed.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 14.

FIG. 1 is a diagram illustrating an appearance of a freezer according to an embodiment of the present invention. The freezer 1 is an example of a freezer, and is an integrated freezer having a substantially rectangular parallelepiped outer shape. The freezer 1 incorporates a compressor, a condenser, an expansion valve, an evaporator, and the like, and a cooler is embedded in the inner wall of the freezer chamber, which will be described later, to cool the freezer chamber to a temperature lower than zero degrees Celsius. The freezer 1 has a built-in compressor, condenser, expansion valve, evaporator, etc., and can be opened and closed freely with respect to the main body 11 having a freezing chamber inside and the main body 11 via a hinge (not shown). It includes a door 12 provided and a temperature controller 13 for adjusting the temperature in the freezing chamber. Further, the freezer 1 is provided with a vibration exciting unit 36. The details of the vibrating unit 36 will be described later.

In FIG. 1, among the directions indicated by the X-axis, Y-axis, and Z-axis representing the three-dimensional space (Cartesian coordinate space), the direction connecting the upper right and the lower left in FIG. 1 is the X-axis direction. The direction connecting the lower right and the upper left in FIG. 1 indicates the Y-axis direction, and the vertical direction in FIG. 1 indicates the Z-axis direction. Further, hereinafter, in the X-axis direction, the lower left side in FIG. 1 is simply referred to as the left side, and in the X-axis direction, the upper right side in FIG. 1 is simply referred to as the right side. Further, hereinafter, in the Y-axis direction, the lower right side in FIG. 1 is simply referred to as the front side, and in the Y-axis direction, the upper left side in FIG. 1 is simply referred to as the rear side. Furthermore, hereinafter, in the Z-axis direction, the upper side in FIG. 1 is simply referred to as an upper side, and in the Z-axis direction, the lower side in FIG. 1 is simply referred to as a lower side. The upper right side is the positive direction of the X axis, the upper left side is the positive direction of the Y axis, and the upper side is the positive direction of the Z axis. Further, the Z-axis direction is also simply referred to as a vertical direction, and the direction along the plane parallel to the X-axis and the Y-axis is also simply referred to as a horizontal direction or a horizontal direction. The downward direction is the direction in which gravity is applied. The same applies to FIG.

FIG. 2 is a cross-sectional view of the freezer 1 which is a plane defined by the X-axis and the Z-axis and shows a cross section in a plane along the position indicated by the line AA'in FIG. Inside the freezer 1, a freezing chamber 31 which is a space to be cooled is formed. The lower side of the freezing chamber 31, that is, the main body 11 side is surrounded by the cooler 32. The cooler 32 is made of a material having high heat transfer properties such as a steel plate such as stainless steel or a galvanized steel plate or a copper plate, and having excellent corrosion resistance to ethanol. The cooler 32 is also formed as a container. The cooler 32 is an example of a container or a cooling container. A liquid cooling medium 37 is stored in the cooler 32. For example, the cooler 32 is formed in a tank shape. A heat exchanger connected to a condensin unit 33 including a compressor, a condenser, an expansion valve, etc. by piping is provided on the surface of the cooler 32 facing the surface on the freezing chamber 31 side. There is. The heat exchanger absorbs heat from the cooler 32, and the condenser of the condensin unit 33 exhausts heat. As a result, the freezing chamber 31 is cooled.

The outside of the cooler 32 is covered with a heat insulating material 34 made of polyurethane foam resin, a vacuum panel, or the like. Further, the door 12 is filled with a heat insulating material 35 made of a foamed polyurethane resin, a vacuum panel, or the like. That is, the entire freezing chamber 31 is surrounded by the heat insulating material 34 and the heat insulating material 35.

The cooler 32 is not limited in shape as long as it can store the liquid cooling medium 37 as a container, and may be in the shape of a hemispherical ball or may be further provided with a lid.

The vibrating unit 36 generates physical vibration by electricity, and applies the physical vibration to the cooler 32. For example, the vibrating unit 36 generates physical vibration when a commercial power source supplied from the outside or supplied from the condensin unit 33, that is, an AC power source having a voltage such as 100V or 200V is supplied. .. The vibrating unit 36 includes a vibrating unit 51, an electric wire 52, and a timer 53. The vibrating portion 51 is provided in the freezing chamber 31, that is, inside the cooler 32 which is a container, in other words, on the side where the cooling medium 37 of the cooler 32 is stored. When a DC power supply having a predetermined voltage is supplied from the timer 53 via the electric wire 52, the vibrating unit 51 generates physical vibration and applies the physical vibration to the cooler 32. The cooling medium 37 is vibrated by the physical vibration applied to the cooler 32. The vibrating portion 51 is formed in a columnar shape. The vibrating portion 51 is provided at a corner portion in the vertical direction of the cooler 32 along the side surface (vertical surface) of the cooler 32. The side surface of the vibrating portion 51 is fastened to the side surface (vertical surface) of the cooler 32 with screws, an adhesive, a clip, or the like. The bottom surface of the vibrating portion 51 is in contact with the bottom surface of the cooler 32. That is, the bottom surface of the vibrating portion 51 is in contact with the side of the cooler 32 in contact with the cooling medium 37.

The electric wire 52 is a two-core insulated electric wire, and is, for example, a cable in which an insulated electric wire such as a sheath cable or a cabtire cable is further covered with a protective coating. The electric wire 52 connects the timer 53 provided on the outer side surface of the freezer 1 and the vibrating portion 51 provided in the freezing chamber 31. For example, the electric wire 52 is passed between the main body 11 and the door 12. When the DC power supply of a predetermined voltage is supplied from the timer 53, the electric wire 52 supplies the DC power supply to the vibrating unit 51.

The timer 53 is connected to a plug receiver (so-called outlet) of a wiring plug connector for supplying external commercial power via an electric wire and a plug, or is provided in the condensin unit 33. It is connected to the plug holder (so-called outlet). That is, for example, the timer 53 is supplied with a commercial power source that is an AC power source having a voltage such as 100 V or 200 V. The timer 53 is a rectifier that converts a commercial AC voltage power supply into a DC voltage power supply, an electronic off-timer that shuts off the power supply after a predetermined time has elapsed, and a timer 53 for starting supply of power to the vibrating unit 51. Includes switch 54. The switch 54 is a switch, and is composed of a push button switch, a membrane switch, a toggle switch, and the like. When the switch 54 is operated by the user, the timer 53 converts a commercial AC voltage power supply into a DC voltage power supply and supplies a DC voltage power supply to the vibrating unit 51 via the electric wire 52. To do. The timer 53 measures the time electronically elapsed from the time when the switch 54 is operated, and shuts off the power supplied to the vibrating unit 51 when a predetermined time elapses after the switch 54 is operated. That is, the timer 53 supplies electricity to the vibrating unit 51 via the electric wire 52 for a predetermined time.

Next, the details of the configuration of the vibrating unit 51 will be described. FIG. 3 is a diagram showing an example of the configuration of the vibrating unit 51. 3 (A), 3 (B) and 3 (C) are a front view, a top view and a bottom view of the vibrating portion 51, respectively. FIG. 3D is a cross-sectional view of the vibrating portion 51 showing a cross section in a plane along the position indicated by the line B-B'in FIG. 3B. Note that FIGS. 3B and 3C show the configurations of the vibrator 71, the cylinder 72, and the electric wire 52, excluding the holding material 73 described later. The vibrating unit 51 includes an oscillator 71, a cylinder 72, and a holding material 73. The oscillator 71 is driven by electricity supplied via the electric wire 52 and comes into contact with the side of the cooler 32 in contact with the cooling medium 37 to physically vibrate the cooler 32. For example, the oscillator 71 physically vibrates due to the piezoelectric element. For example, the vibrator 71 is a disk-shaped piezoelectric element, in which a piezoelectric element that vibrates in the thickness direction when a voltage is applied to both sides of a circle is formed into two steel columns having a diameter substantially the same as the diameter of the piezoelectric element. It is composed of sandwiched between. For example, in this case, the vibrator 71 vibrates in the direction of pressing the bottom surface of the cooler 32. For example, the oscillator 71 vibrates at a frequency of 50 KHz. For example, the cores, which are the conductors of the electric wire 52, which is a two-core insulated electric wire, are connected to the electrodes leading to both sides of the piezoelectric element of the vibrator 71, respectively. When the cooler 32 is vibrated by the vibrator 71, the cooling medium 37 vibrates.

The cylinder 72 is made of a material that is not easily attacked by an aqueous ethanol solution and has a predetermined rigidity, and is formed in a hollow tubular shape with open ends on both sides. The cylinder 72 stores the vibrator 71 and the electric wire 52 so as to expose the portion of the vibrator 71 in contact with the cooler 32.

For example, the cylinder 72 has a constant diameter, a constant thickness, and a side surface formed in a linear cylindrical shape in the Z-axis direction. For example, the cylinder 72 is made of a steel such as stainless steel or galvanized steel, or a metal such as a nickel alloy, a tin alloy, a copper alloy, or a titanium alloy. For example, the cylinder 72 is coated to prevent corrosion due to an aqueous ethanol solution. The length of the cylinder 72 is made shorter than the depth of the cooler 32, that is, the length in the Z-axis direction of the cooler 32 on the side where the cooling medium 37 is stored, so that the cylinder 72 can be stored in the freezing chamber 31. Further, the length of the cylinder 72 is made longer than the length in the longitudinal direction (Z-axis direction) of the vibrator 71 in order to accommodate the vibrator 71. More preferably, the length of the cylinder 72 is longer than the depth of the cooling medium 37 stored in the cooler 32.

Plates 81-1-1, 81-1-2, 81-2-1 and 81-2-2 are fixed to the outer side surface of the cylinder 72. The plates 81-1-1, 81-1-2, 81-2-1 and 81-2-2 are formed in a plate shape, respectively. For example, the plates 81-1-1 and 81-1-2 are fixed to the upper side of the outer side surface of the cylinder 72 at a right angle of 90 degrees to each other. Further, for example, the plates 81-2-1 and 81-2-2 are fixed to the lower side of the outer side surface of the cylinder 72 at an angle of 90 degrees to each other. The cylinder 72 is fastened to the vertical surface of the cooler 32 by plates 81-1-1, 81-1-2, 81-2-1 and 81-2-2 with screws, adhesives, clips, or the like. ..

The holding material 73 is made of a rubber elastic body material and is filled inside the cylinder 72. For example, the holding material 73 is filled inside the cylinder 72 from one end to the other end of the cylinder 72. The holding material 73 holds the vibrator 71 and the electric wire 52 in the cylinder 72. The holding material 73 holds the vibrator 71 inside the cylinder 72 so that the vibrator 71 and the inner surface of the cylinder 72 do not come into contact with each other. Further, the holding material 73 holds the electric wire 52 inside the cylinder 72 so that the electric wire 52 and the inner surface of the cylinder 72 do not come into contact with each other. The holding material 73 seals the electric wire 52 inside the cylinder 72 so that the electric wire 52 and the cooling medium 37 do not come into contact with each other. That is, the holding material 73 is filled inside the cylinder 72, and the electric wire 52 is sealed inside the cylinder 72 so as not to come into contact with the cooling medium 37, and the vibrator 71 and the vibrator 71 are sealed so as not to come into contact with the inner surface of the cylinder 72. Holds the electric wire 52.

For example, the holding material 73 has a relatively high viscosity before filling, and is made of a material that hardens to become a rubber elastic body when filled inside the cylinder 72. For example, the holding material 73 is a silicone sealant. For example, the holding material 73 can be a modified silicone sealant or a urethane sealant. The holding material 73 is also referred to as a filler, a sealing material, a sealant, a sealing material, a caulking material, or the like.

Since the holding material 73 has elasticity and holds the vibrator 71 and the electric wire 52 so as not to come into contact with the inner surface of the cylinder 72, it does not interfere with the vibration of the vibrator 71, and the vibration of the vibrator 71 is less likely to be damped and vibrates. The vibration of the child 71 is efficiently transmitted by the cooler 32. Further, since the holding material 73 seals the electric wire 52 inside the cylinder 72 so that the electric wire 52 does not come into contact with the cooling medium 37, the deterioration of the electric wire 52 due to the contact with the cooling medium 37 containing ethanol, as described later, is more accurate. It is possible to prevent deterioration of the coating of the electric wire 52.

The cylinder 72 may meet in a square tubular shape such as a square or a hexagon, and may have a diameter different depending on a part, a thickness different depending on a part, or may be bent. For example, the ends on both sides of the cylinder 72 may have a smaller diameter than the central portion of the cylinder 72, and the thickness of the ends on both sides of the cylinder 72 may be reduced. It may be made thicker than the thickness of the central portion of the. Further, for example, either one of the end portions on both sides of the cylinder 72 may be formed in an inner flange shape or an outer flange shape.

Further, the vibrating portion 51 may be arranged obliquely with respect to the cooler 32. That is, the vibrating portion 51 may be arranged so that the longitudinal direction of the vibrating portion 51 intersects the bottom surface of the cooler 32.

The freezer 1 is not limited to the integrated freezer, as long as it can be cooled to a desired temperature, and even if it is composed of a stationary freezer unit, a condensin unit and a separate showcase or a freezer warehouse. It may be a vertical or horizontal industrial freezer. Further, the freezer 1 may be of any cooling method, and has a reciprocating type (reciprocating type) or a rotary capacity compression type, a centrifugal type (turbo type), an absorption type, a turbo type using an air refrigeration cycle, and a Perche effect. It can be an electronic refrigerator or a magnetic refrigerator used.

Next, the details of the cooling medium 37 will be described. The cooling medium 37 is stored in the cooler 32 in the freezer 1 and cooled, and is used in a liquid state for freezing the article by immersing the article. The cooling medium 37 contains an aqueous ethanol solution, a powder obtained by crushing a product obtained by thermally decomposing plant seeds, and a water-soluble silicon compound.

The ethanol aqueous solution is a mixture of ethanol (ethyl alcohol) and water in a predetermined ratio. Ethanol can dissolve various organic substances and has relatively low toxicity among monohydric alcohols. In addition, ethanol can be miscible with water in any proportion. In the aqueous ethanol solution, the concentration of ethanol can be any value, for example, 10% by weight to 90% by weight.

For example, when the concentration of ethanol is 60% by weight, the freezing point of the aqueous ethanol solution alone is -45.4 degrees Celsius.

When the concentration of ethanol is less than 60% by weight, water-soluble ethanol is treated as a non-dangerous substance under the Fire Service Act.

Next, the details of the powder contained in the cooling medium 37 will be described.

The powder mixed in the aqueous ethanol solution is obtained by crushing the product obtained by thermally decomposing the seeds of the plant. For example, plant seeds are legumes such as adzuki beans, soybeans, peas, chickpeas or peanut seeds. Plant seeds are pyrolyzed in a semi-enclosed electric furnace at temperatures above 400 degrees Celsius and below 500 degrees Celsius. The product obtained by thermally decomposing the seeds of a plant is pulverized by a pulverizer such as a ball mill into a powder having a representative value of 10 μm or less, which indicates the center of particle size distribution.

Here, the semi-sealed state means a state in which the partial pressure of oxygen is reduced compared to the atmospheric atmosphere. For example, semi-sealing refers to a state in which the firing space and the outside are communicated with each other through gaps or small holes so that the replacement of the atmosphere in the firing space with the outside air is suppressed, as in a charcoal kiln. By doing so, the seeds of the plant are heated and thermally decomposed in a state where oxidation or combustion is suppressed. For example, by storing plant seeds in an alumina container and heating them in an electric furnace, a product obtained by thermally decomposing the plant seeds can be obtained.

The product obtained by pyrolyzing plant seeds at a temperature of 400 degrees Celsius or more and less than 500 degrees Celsius is soft and extremely easily pulverized due to the thermal decomposition treatment at medium and low temperatures. On the other hand, Bincho charcoal has a hardness comparable to that of metal because it is fired at a high temperature of about 1,000 degrees Celsius.

For example, a product obtained by thermally decomposing plant seeds at a temperature of 400 degrees Celsius or more and less than 500 degrees Celsius is placed in a ball mill pot together with alumina balls and crushed by rotating the ball mill pot. For example, the powder obtained by grinding is sifted through a predetermined mesh.

FIG. 4 is a diagram showing a powder having a particle size of about 5 μm, taken at 10,000 times using a scanning electron microscope. It can be seen that the outer shape of the powder has no corners and is easily crushed. Further, the powder does not have fine pores.

FIG. 5 is a diagram showing an example of the result of component analysis of the powder. The ratio of elements contained in the powder shown in FIG. 5 was determined by CHN elemental analysis (Elemental Analysis (Carbon, Hydrogen, Nitrogen)) and fluorescent X-ray analysis. In the example shown in FIG. 5, the powder obtained by crushing the product obtained by thermally decomposing the seeds of a plant, which is a small bean, contains 66.5% by weight of carbon, 17.1% by weight of potassium, and 6.1% by weight. % Nitrogen, 4.2% by weight hydrogen, 2.78% by weight phosphorus, 1.4% by weight calcium, 0.8% by weight magnesium, 0.5% by weight sulfur, 0.26% by weight It contains iron, 0.07% by weight zinc, 0.05% by weight manganese, 0.03% by weight silicon, 0.02% by weight aluminum and 0.01% by weight copper.

The product of pyrolyzing plant seeds at temperatures above 400 degrees Celsius and below 500 degrees Celsius contains potassium and phosphorus, which results in hydrophilicity. Here, potassium is an alkali metal. In addition, magnesium is contained in the product obtained by thermally decomposing plant seeds at a temperature of 400 degrees Celsius or more and less than 500 degrees Celsius. Magnesium produces alkaline water.

15% to 19% by weight of potassium and 1% by weight are contained in the powder obtained by crushing the product obtained by pyrolyzing the seeds of beans such as red beans, soybeans, peas, chickpeas or peanut seeds. It contains from 3% by weight of phosphorus. In addition, the product obtained by thermally decomposing beans can be pulverized relatively easily, and a powder having a value at the center of the particle size distribution of 10 μm or less can be easily obtained.

On the other hand, when pyrolyzed at 500 degrees Celsius or higher, the content ratio of elements other than carbon decreases, and when pyrolyzed at 800 degrees Celsius or higher, the carbon content ratio exceeds 95% by weight. If the thermal decomposition temperature is high and carbonization progresses too much, the fired product loses its water solubility.

Also, in general, when electrically charged particles (fine particles) move in a solution, a weak electric current is generated. The powder obtained by crushing the product obtained by pyrolyzing the seeds of a plant produces a zeta potential of minus 0.5 mV in a solution at pH 7. Therefore, the powder obtained by crushing the product obtained by thermally decomposing the seeds of a plant causes a unique chemical reaction such as binding to a substance having a positive potential such as a protein. Further, the powder obtained by crushing the product obtained by thermally decomposing the seeds of the plant generates a zeta potential of minus 0.5 mV in a solution of pH 7, so that they repel each other and easily disperse.

Further, the particle size distribution of the powder obtained by pyrolyzing the seeds of a plant, which is a small bean, at a temperature of 400 degrees Celsius or more and less than 500 degrees Celsius with a crusher such as a ball mill was measured. The particle size distribution of the powder was measured by using a laser diffraction type particle size distribution measuring device that irradiates the particle group with laser light and obtains the particle size distribution by calculation from the intensity distribution pattern of the diffraction / scattered light emitted from the particle group. .. In this case, the measurement range of the laser diffraction type particle size distribution measuring device is from 0.05 μm to 3,000 μm. The number of measurements is four.

FIG. 6 is a diagram showing the particle size distribution of the powder measured by the volume relative particle size distribution and the number relative particle size distribution. The horizontal axis of FIG. 6 indicates the particle size (μm) logarithmically, and the vertical axis indicates the relative particle amount (%). The average particle size (mean value) is 7.4 μm, and the mode value is 8.5 μm. The median is 8.491 μm. The average deviation is 0.373. The average value, mode value, and median value are examples of representative values indicating the center of the particle size distribution, respectively.

As described above, the powder obtained by crushing the product obtained by thermally decomposing the seeds of the plant is crushed until the representative value indicating the center of the particle size distribution becomes 10 μm or less.

Next, the hydrophilicity of the powder obtained by crushing the product obtained by thermally decomposing the seeds of the plant will be described. FIG. 7 is a diagram showing a state when a powder obtained by crushing a product obtained by thermally decomposing plant seeds is mixed with an aqueous ethanol solution. The powder obtained by crushing the product obtained by thermally decomposing the seeds of a plant has high wettability and quickly precipitates in an aqueous ethanol solution.

When 1% by weight of a powder obtained by crushing a product obtained by thermally decomposing plant seeds is mixed with an aqueous ethanol solution, a suspension is formed and a sumi-like liquid is obtained.

On the other hand, particles produced by crushing general charcoal that is fired at a high temperature of 800 degrees Celsius or higher using hardwood as a material show strong hydrophobicity and low wettability, so they are mixed with an aqueous ethanol solution. Then, it floats on the surface for a while and then settles. Even if general charcoal is crushed to generate particles, it is difficult to atomize the particles, and the particle size is about 20 μm.

When 1% by weight of a powder made by crushing general charcoal is mixed with an aqueous ethanol solution, it immediately becomes a suspension and becomes a black ink-like liquid.

A powder obtained by crushing a product obtained by thermally decomposing plant seeds is mixed with an aqueous ethanol solution and dispersed, and the suspended state is maintained even after 24 hours or more have passed in a stationary state. FIG. 8 is a diagram showing a state of an ethanol aqueous solution mixed with powder when 24 hours have passed in a stationary state. The left side in FIG. 8 shows a state in which a powder obtained by crushing a product obtained by thermally decomposing plant seeds is dispersed in an aqueous ethanol solution and left standing for 24 hours. The right side in FIG. 8 shows a state in which a powder obtained by crushing general charcoal is dispersed in an aqueous ethanol solution and allowed to stand for 24 hours.

When powder obtained by crushing general charcoal is dispersed in an aqueous ethanol solution and allowed to stand for 24 hours, the particles precipitate and the supernatant becomes transparent. On the other hand, when the powder obtained by crushing the product obtained by thermally decomposing the seeds of the plant is dispersed in an aqueous ethanol solution, the ink-like state is maintained even after 24 hours have passed in the stationary state, and the suspension state is maintained. Is maintained. When the powder obtained by crushing the product obtained by thermally decomposing the seeds of a plant is dispersed in an aqueous ethanol solution, some aggregated precipitates are generated at the bottom of the container even after about one week, but they are in a suspended state. Is maintained.

In the cooling medium 37, 0.5% by weight to 1.0% by weight of powder is mixed with the aqueous ethanol solution.

In addition, it was confirmed that the product obtained by thermally decomposing plant seeds at a temperature of 400 degrees Celsius or more and less than 500 degrees Celsius is harmless to the human body.

Next, the water-soluble silicon compound contained in the cooling medium 37 will be described. The water-soluble silicon compound is a transparent liquid having a slight thickness. For example, a water-soluble silicon compound is a silicate.

For example, a water-soluble silicon compound is produced by the following procedure. High-purity silicon ore is calcined and gasified at a high temperature of about 1,600 degrees Celsius, and the gasified silicon component is recovered. At room temperature, the recovered silicon becomes fine bead-shaped crystals. The silicon crystals are heat-melted with a strong alkali or strong acid to be liquefied. For example, an alkali (e.g., sodium carbonate or sodium hydroxide) silicon treated with the sodium silicate (Na ₂ SiO ₃₎ (sodium metasilicate) That becomes salt, a water-soluble (soluble in water).

It is also possible to obtain a water-soluble silicon compound by burning rice husks, treating the ash with a strong alkali, and extracting a liquefied silicon compound.

Sodium metasilicate is also known as a major component of hot springs. Since sodium metasilicate is a salt, it is solubilized. Liquefied hydrophilic silicon compounds are also soluble in water.

Common silicates (including potassium silicate, calcium silicate or magnesium silicate) are incorporated into detergents and soaps. Silicates in detergents and soaps disperse dirt particles and prevent reattachment to clothing. It is widely known that silicates float evenly in a liquid and move.

Silica (SiO ₂ ) is often used as an ion exchange substance, and hydrophilic silicon compounds also have electrical properties. Motility of hydrophilic silicon compounds in solution is also evoked by electrical stimulation.

As the water-soluble silicon compound contained in the cooling medium 37, an inorganic silicon compound is preferable because its electrical characteristics are clear.

In the cooling medium 37, 0.5% by weight to 1.0% by weight of a water-soluble silicon compound is mixed with the aqueous ethanol solution. For example, in the cooling medium 37, 0.5% by weight to 1.0% by weight of silicate is mixed with the aqueous ethanol solution.

The water-soluble silicon compound contained in the cooling medium 37 disperses a powder obtained by pulverizing a product obtained by thermally decomposing plant seeds in an aqueous ethanol solution. Thereby, the water-soluble silicon compound suppresses the freezing of the cooling medium 37.

In other words, when a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 degrees Celsius or more and less than 500 degrees Celsius is mixed with an aqueous ethanol solution and a water-soluble silicon compound, the freezing point is lowered.

The freezing point of an aqueous ethanol solution having an ethanol concentration of 60% by weight is -45.4 degrees Celsius. For example, it is a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 degrees Celsius or more and less than 500 degrees Celsius in an aqueous ethanol solution having an ethanol concentration of 60% by weight, which is 0.5 with respect to the aqueous ethanol solution. When a% to 1.0% by weight powder is mixed with an aqueous ethanol solution of 0.5% to 1.0% by weight of a water-soluble silicon compound, the liquid phase is maintained at -60 degrees Celsius. , Can be put into practical use as a liquid cooling medium 37 at -60 degrees Celsius.

Further, in addition to the electrical stimulation by the water-soluble silicon compound, the hydrophilic powder is dispersed in the ethanol aqueous solution by applying physical vibration by the vibrator 71 of the vibrating portion 36. Further, the cooling medium 37 vibrates to generate a flow. As a result, freezing of the cooling medium 37 is suppressed. Compared with the case of the ethanol aqueous solution alone, it does not solidify to a lower temperature and can be used at a lower temperature. This allows the article to be frozen faster.

FIG. 9 is a flowchart showing a procedure for manufacturing a frozen product. Here, the article to be frozen may be a tangible item other than real estate. The articles to be frozen can be of biological origin in plants or animals. For example, the frozen article can be food, cosmetic or medical. For example, cosmetics can contain placenta (a component extracted from the placenta), collagen or amino acids. For example, medical products include medicines or medical devices obtained by processing cells such as human stem cells, organs, teeth, blood, cells or tissues, or biological products.

In step S11, the aqueous ethanol solution is placed in the container. Here, the concentration of ethanol in the aqueous ethanol solution can be arbitrary. For example, the concentration of ethanol in the aqueous ethanol solution can be less than 60% by weight. Further, for example, the concentration of ethanol in the aqueous ethanol solution can be any of 10% by weight to 90% by weight. When cooling to a temperature lower than -60 degrees Celsius, the concentration of ethanol in the aqueous ethanol solution is as high as 60% by weight or more, and when cooling to a temperature higher than -60 degrees Celsius, the concentration of ethanol in the aqueous ethanol solution is increased. It is lower, less than 60% by weight.

In step S12, the seeds are thermally decomposed at 400 to 500 degrees Celsius, and the powder produced by pulverization is mixed with the aqueous ethanol solution contained in the container. In this case, for example, it is a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 to 500 degrees Celsius in an aqueous ethanol solution, and is 0.5% by weight to 1.0 with respect to the aqueous ethanol solution. Weight% of powder is mixed.

In step S13, the water-soluble silicon compound is mixed with the aqueous ethanol solution contained in the container. In this case, for example, 0.5% by weight to 1.0% by weight of a water-soluble silicon compound is mixed with the aqueous ethanol solution.

In step S14, an aqueous ethanol solution in which the powder and the water-soluble silicon compound are mixed is put into the cooler 32 in the freezing chamber 31 of the freezer 1.

In step S15, the freezer 1 cools an aqueous ethanol solution in which the powder and the water-soluble silicon compound are mixed to a temperature lower than zero degrees Celsius. For example, when the concentration of ethanol in the aqueous ethanol solution is 60% by weight, the freezer 1 cools the aqueous ethanol solution in which the powder and the water-soluble silicon compound are mixed to -60 degrees Celsius.

In step S16, the article to be frozen is placed in a sealed container. For example, when the article to be frozen is a food, cosmetic or medical article, it is a container formed of a plastic film or a metal foil or a combination of these in a bag shape or other shape, and is heat-melted. The article to be frozen is put in a sealed container (so-called pouch container) which is a container sealed by. The sealed container is a container made of resin, metal, glass, or a combination thereof, which can be sealed so that the article to be frozen does not come into direct contact with the aqueous ethanol solution, and can withstand cooling to the temperature of the freezing chamber 31 of the freezer 1. It should be. Further, the article to be frozen may be in the form of a solid, a liquid, a sol or a gel.

In step S17, the vibrating unit 36 vibrates the cooler 32, which is a cooling container.

In step S18, the article placed in the sealed container is immersed in a cooled ethanol aqueous solution containing a powder and a water-soluble silicon compound placed in a vibrating condenser 32 to freeze.

In step S19, the timer 53 determines whether or not a predetermined time has elapsed. For example, in step S19, the timer 53 vibrates the cooler 32 to determine whether or not 10 minutes have passed. If it is determined in step S19 that the predetermined time has not elapsed, the procedure returns to step S19, and the determination process is repeated.

If it is determined in step S19 that the predetermined time has elapsed, the procedure proceeds to step S20, the vibration to the cooler 32 is stopped by shutting off the power supply of the timer 53, and the procedure for manufacturing the frozen product is as follows. finish.

Next, shortening of the freezing time due to physical vibration to the cooler 32 will be described. The inventor experimentally compared the freezing time when there was no physical vibration to the cooler 32 and the freezing time when there was physical vibration to the cooler 32 for various foodstuffs. In this experiment, the temperature of the cooling medium 37 was -60 degrees Celsius. Beef shoulder loin block meat, yellowtail fillet or chicken thigh meat were used as ingredients to be frozen. The temperature was measured by puncturing and fixing a temperature sensor to the center of the foodstuff, which is either beef shoulder loin block meat, yellowtail fillet or chicken thigh meat.

FIG. 10 is a diagram showing a change in the core temperature with respect to the elapsed time from the start of freezing when freezing beef shoulder loin block meat. The weight of the beef shoulder loin block meat used for measuring the freezing time in the absence of physical vibration to the cooler 32 was 201 g. On the other hand, the weight of the beef shoulder loin block meat used for measuring the freezing time when there was physical vibration to the cooler 32 was 204 g.

In FIG. 10, the horizontal axis shows the elapsed time since the beef shoulder loin block meat was immersed in the cooling medium 37. In FIG. 10, the vertical axis indicates the temperature at the center of the beef shoulder loin block meat.

In FIG. 10, the dotted line indicates the temperature of the center of the beef shoulder loin block meat with respect to the elapsed time from the immersion of the beef shoulder loin block meat in the cooling medium 37 in the absence of physical vibration to the cooler 32. In FIG. 10, the solid line shows the temperature of the center of the beef shoulder loin block meat with respect to the elapsed time from the immersion of the beef shoulder loin block meat in the cooling medium 37 when there is physical vibration to the cooler 32. The temperature at the center of the beef shoulder loin block meat when immersed in the cooling medium 37 was +13 degrees Celsius.

When there is physical vibration to the cooler 32, the temperature at the center of the beef shoulder loin block meat drops to +1 degree Celsius and is immersed in the cooling medium 37 when 6 minutes have passed since it was immersed in the cooling medium 37. After 7.5 minutes, the temperature at the center of the beef shoulder loin block meat dropped to -1 ° C. In addition, when there is physical vibration to the cooler 32, the temperature at the center of the beef shoulder loin block meat reaches -8 degrees Celsius and cools when 10 minutes have passed since it was immersed in the cooling medium 37. After 14 minutes of immersion in the medium 37, the temperature at the center of the beef shoulder loin block meat reached -20 ° C. In the presence of physical vibrations to the cooler 32, it took 19 minutes after soaking in the cooling medium 37 for the temperature at the center of the beef shoulder loin block meat to reach −41 degrees Celsius.

When there was physical vibration to the cooler 32, the temperature dropped rapidly immediately after the beef shoulder loin block meat was immersed in the cooling medium 37, and the temperature reached -50 degrees Celsius without stagnation.

On the other hand, in the absence of physical vibration to the cooler 32, it takes 10.5 minutes after soaking in the cooling medium 37 for the temperature at the center of the beef shoulder loin block meat to reach +1 degree Celsius. It took 12 minutes after soaking in the cooling medium 37 for the temperature of the center of the beef shoulder loin block meat to reach -1 degrees Celsius. Also, in the absence of physical vibration to the cooler 32, it takes 14 minutes after soaking in the cooling medium 37 for the temperature of the center of the beef shoulder loin block meat to reach -8 degrees Celsius, and the beef. It took 17 minutes after soaking in the cooling medium 37 for the temperature at the center of the shoulder loin block meat to reach -20 degrees Celsius. In the absence of physical vibration to the cooler 32, it took 21.5 minutes after soaking in the cooling medium 37 for the temperature at the center of the beef shoulder loin block meat to reach −41 ° C.

In the case where there is physical vibration to the cooler 32 and the case where there is no physical vibration to the cooler 32, when 10 minutes have passed since the beef shoulder loin block meat was immersed in the cooling medium 37, the center There was a difference of 10 degrees Celsius in temperature.

FIG. 11 is a diagram showing a change in the core temperature with respect to the elapsed time from the start of freezing when the yellowtail fillet is frozen. The weight of the yellowtail fillet used for measuring the freezing time in the absence of physical vibration to the cooler 32 was 126 g. On the other hand, the weight of the yellowtail fillet used for measuring the freezing time when there was physical vibration to the cooler 32 was 128 g.

In FIG. 11, the horizontal axis indicates the elapsed time since the yellowtail fillet was immersed in the cooling medium 37. In FIG. 11, the vertical axis indicates the temperature at the center of the yellowtail fillet.

In FIG. 11, the dotted line indicates the temperature of the center of the yellowtail fillet with respect to the elapsed time from the immersion of the yellowtail fillet in the cooling medium 37 when there is no physical vibration to the cooler 32. In FIG. 11, the solid line shows the temperature of the center of the yellowtail fillet with respect to the elapsed time from the immersion of the yellowtail fillet in the cooling medium 37 when there is physical vibration to the cooler 32. The temperature at the center of the yellowtail fillet when immersed in the cooling medium 37 was +21 degrees Celsius.

If there is physical vibration to the cooler 32, the temperature at the center of the brittle fillet will drop to -1 degrees Celsius after 3 minutes of immersion in the cooling medium 37, after immersion in the cooling medium 37. After 4 minutes, the temperature at the center of the bristle fillet reached -8 degrees Celsius. Further, when there is physical vibration to the cooler 32, the temperature at the center of the brittle fillet drops to -20 degrees Celsius and is immersed in the cooling medium 37 when 6 minutes have passed since it was immersed in the cooling medium 37. After 11 minutes, the temperature at the center of the bristle fillet reached -40 degrees Celsius.

On the other hand, in the absence of physical vibration to the cooler 32, it takes 5 minutes for the temperature at the center of the bristle fillet to reach 0 degrees Celsius after being immersed in the cooling medium 37, which is the center of the bristle fillet. It took 7 minutes after soaking in the cooling medium 37 for the temperature to reach -7 degrees Celsius. Further, in the absence of physical vibration to the cooler 32, it takes 9 minutes after immersion in the cooling medium 37 for the temperature of the center of the yellowtail fillet to reach -18 degrees Celsius, and the center of the yellowtail fillet. It took 12 minutes after immersion in the cooling medium 37 for the temperature to reach −39 degrees Celsius.

In the case where there is physical vibration to the cooler 32 and the case where there is no physical vibration to the cooler 32, when 10 minutes have passed since the yellowtail fillet was immersed in the cooling medium 37, the temperature at the center was reached. , There was a difference of 11 degrees Celsius.

FIG. 12 is a diagram showing changes in the core temperature with respect to the elapsed time from the start of freezing when freezing chicken thighs. The weight of the chicken thigh used for measuring the freezing time in the absence of physical vibration to the cooler 32 was 319 g. On the other hand, the weight of the chicken thigh used for measuring the freezing time when there was physical vibration to the cooler 32 was 326 g.

In FIG. 12, the horizontal axis shows the elapsed time since the chicken thigh was immersed in the cooling medium 37. In FIG. 12, the vertical axis represents the temperature at the center of the chicken thigh.

In FIG. 12, the dotted line indicates the temperature of the center of the chicken thigh with respect to the elapsed time from the immersion of the chicken thigh in the cooling medium 37 in the absence of physical vibration to the cooler 32. In FIG. 12, the solid line shows the temperature of the center of the chicken thigh with respect to the elapsed time from the immersion of the chicken thigh in the cooling medium 37 when there is physical vibration to the cooler 32. The temperature at the center of the chicken thigh when immersed in the cooling medium 37 was +25 degrees Celsius.

If there is physical vibration to the cooler 32, the temperature at the center of the chicken thigh will drop to -3 degrees Celsius when 3 minutes have passed since it was soaked in the rejection medium 37, and then soaked in the cooling medium 37. After 5 minutes, the temperature at the center of the chicken thigh reached -8 degrees Celsius. In addition, when there is physical vibration to the cooler 32, the temperature at the center of the chicken thigh drops to -19 degrees Celsius and is immersed in the cooling medium 37 when 12 minutes have passed since it was immersed in the cooling medium 37. After 18 minutes, the temperature at the center of the chicken thigh reached -40 degrees Celsius.

On the other hand, in the absence of physical vibration to the cooler 32, it takes 10 minutes after soaking in the cooling medium 37 for the temperature at the center of the chicken thigh to reach +1 degree Celsius, which is the center of the chicken thigh. It took 12 minutes for the temperature to reach -1 degrees Celsius after being immersed in the cooling medium 37. Also, in the absence of physical vibration to the cooler 32, it takes 15 minutes after soaking in the cooling medium 37 for the temperature at the center of the chicken thigh to reach -15 degrees Celsius, and the center of the chicken thigh. It took 19 minutes after immersion in the cooling medium 37 for the temperature to reach -40 degrees Celsius.

In the case where there is physical vibration to the cooler 32 and the case where there is no physical vibration to the cooler 32, when 10 minutes have passed since the chicken thigh was immersed in the cooling medium 37, the temperature at the center was reached. , There was a difference of 16 degrees Celsius. The large temperature difference is thought to be due to the heat insulating properties of the chicken thigh skin.

By applying physical vibration to the cooler 32 in this way, articles such as foodstuffs can be frozen faster at a lower temperature. Generally, when a food material is placed in a cooled liquid cooling medium and allowed to stand, the temperature of the cooling medium around the food material rises due to the heat of the food material. On the other hand, when physical vibration is applied to the cooler 32, a flow is caused in the liquid cooling medium 37, and articles such as foodstuffs are exposed to the cooling medium 37 having a lower temperature, so that the product freezes faster. can do.

It is known that freezing and swelling of water contained in foodstuffs occurs at +1 to -7 degrees Celsius, and that the longer this temperature range is, the more cell destruction occurs. So to speak, when water expands slowly and slowly, the cell membrane cannot withstand and leads to destruction, but if it freezes instantly, cell destruction does not occur. This difference becomes noticeable in the drip (cell deviant liquid) after thawing, but when the freezer 1 is used, it passes through the temperature range at high speed without any stagnation, so that the cells are not destroyed and the original flavor and texture of the food material. You can keep the feeling.

Although the detailed effect and mechanism are unknown, it has been reported that therapeutic ultrasound has an effect of promoting healing of skin ulcers, tendon injuries, and fractures, and is expected to be applied to skeletal muscle, for example. Considering this point, it is also considered that vibration suppresses cell necrosis in a low temperature state and freezes cells non-destructively.

The powder and the water-soluble silicon compound contained in the cooling medium 37 induce motion by vibration, generate a zeta potential of minus 0.5 mV, and generate a weak current. There is also a report that cell destruction during freezing is suppressed under a weak current.

A temperature difference of about 1 degree to 3 degrees Celsius occurs due to the opening and closing of the door 12 between the vicinity of the liquid level of the cooling medium 37 stored in the cooler 32 and the vicinity of the bottom of the cooler 32. When physical vibration is applied, the cooling medium 37 is agitated, so that the temperature difference becomes small and the temperature of the cooling medium 37 stored in the cooler 32 becomes more uniform.

Further, since the vibrator 71 generates heat when it is operated, the cooling medium 37 is heated when it is continuously operated. As described with reference to FIGS. 10 to 12, it is more effective to operate the oscillator 71 for a predetermined time after immersing the article to be frozen in the cooling medium 37, for example, using a timer 53. It is preferable to operate the vibrator 71 for 10 minutes after immersing the article to be frozen in the cooling medium 37.

Next, the reduction of drip will be described. When the freezing time is shortened due to the physical vibration to the cooler 32, the drip when thawed is reduced. The inventor thawed raw mackerel frozen in freezer 1 (when freezing, physical vibration was applied to the cooler 32) with running water using so-called whole raw mackerel without removing blood and internal organs. The drip when the mackerel was thawed in running water was compared with the drip when the raw mackerel frozen in a general household freezer was thawed by an experiment.

Under the same conditions, raw mackerel frozen in freezer 1 and raw mackerel frozen in a general household freezer were placed in separate nylon sealed containers, degassed (vacuum), and then frozen. .. Each raw mackerel was thawed in running tap water, which is a general thawing method, and then the weight of the drip leached from both samples and stored in the sealed container was measured and compared. At the time of thawing, the internal temperature of both samples was measured using a temperature sensor, and the time until the temperature reached +1 degree Celsius, that is, the time until thawing was completed was measured.

The raw mackerel frozen in the freezer 1 had a body length of 375 mm and a weight of 612.69 g. The internal temperature at the start of thawing was -56 degrees Celsius. The raw mackerel frozen in a general household freezer had a body length of 405 mm and a weight of 680.94 g. The internal temperature at the start of thawing was -14 degrees Celsius.

FIG. 13 is a diagram showing a drip when raw mackerel frozen in a general household freezer is thawed. The amount of drip that flowed into the sealed container was 56.03 g. The ratio of the weight of the drip to the weight of the raw mackerel frozen in the general household freezer is 8.22%. The time from the start of thawing to +1 degree Celsius was 16 minutes and 42 seconds.

FIG. 14 is a diagram showing a drip when the raw mackerel frozen in the freezer 1 is thawed. The amount of drip that flowed into the sealed container was 6.95 g. The ratio of the weight of the drip to the weight of the raw mackerel frozen in the freezer 1 is 1.13%. The time from the start of thawing to +1 degree Celsius was 17 minutes 55 seconds.

As described above, the raw mackerel frozen in the freezer 1 has a reduced drip when thawed. The internal temperature of raw mackerel frozen in freezer 1 was -56 degrees Celsius, and the internal temperature of raw mackerel frozen in a general household freezer was -14 degrees Celsius, with a difference of 42 degrees Celsius. The time required for the internal temperature to reach +1 degree Celsius and thawing was completed was only 73 seconds.

In this way, the frozen product can be produced. By immersing in an aqueous ethanol solution, more heat is taken away in a shorter time, so that a frozen product can be produced faster. Since the ethanol aqueous solution in which the powder and the water-soluble silicon compound are mixed does not solidify to a lower temperature than the case of the ethanol aqueous solution alone, a frozen product can be produced even faster. Further, since the ethanol aqueous solution in which the powder and the water-soluble silicon compound are mixed does not solidify to a lower temperature than the case of the ethanol aqueous solution alone, the deterioration of the frozen product can be further reduced, and more. It will be possible to store it for a long period of time.

When an aqueous ethanol solution having an ethanol concentration close to 60% by weight and less than 60% by weight of a non-dangerous substance is used, it is a non-dangerous substance and does not aggregate at -60 degrees Celsius, so that it can be sterilized more safely. it can.

By applying vibration, even if the cooling medium 37 has the same temperature, articles such as foodstuffs can be frozen faster at a lower temperature.

Although it has been explained that the oscillator 71 vibrates at a frequency of 50 KHz, the present invention is not limited to this, and the oscillator 71 may vibrate at a frequency of 20 KHz to 3 MHz even in the audible region. Further, although it has been described that the vibrator 71 vibrates by the piezoelectric element, the vibrator 71 is not limited to this, and other methods such as an eccentric vibration motor and a linear vibrator may be used. Further, although it has been explained that the vibrator 71 applies vibration in the vertical direction (vertical direction), the vibrator 71 is not limited to this, and vibration in the horizontal direction may be applied. Further, the vibrating unit 36 may apply vibration to the side surface of the cooler 32. The shape of the vibrator 71 is not limited to a columnar shape, and may be any shape such as a prismatic shape, a conical shape, a pyramidal shape, and a flange being formed.

Further, although it has been explained that the timer 53 includes an electronic off-timer, the timer 53 is not limited to this, and may be a dial-type timer that is mechanically rotated as long as the elapsed time can be timed. Further, the timer 53 may be able to be selected or set to shut off the power supplied to the vibrating unit 51 at a desired time.

In addition to the cooler 32, a fixed or removable container for storing the cooling medium 37 may be provided in the cooler 32. In this case, the vibrating unit 36 may apply physical vibration to the cooler 32 or may apply physical vibration to the container for storing the cooling medium 37 in the cooler 32.

As described above, the freezer 1 is a cooling medium 37 for immersing and freezing an article, and the cooling medium 37 used in a liquid state is stored in a cooler 32 which is a container and cooled. The oscillator 71 is driven by electricity supplied via the electric wire 52, and vibrates the cooler 32 in contact with the side of the cooler 32 in contact with the cooling medium 37. The cylinder 72 houses the oscillator 71 and the electric wire 52 so as to expose the portion of the oscillator 71 in contact with the cooler 32, which is longer than the longitudinal length of the oscillator 71 and shorter than the depth of the cooler 32. .. The holding material 73 is made of a rubber elastic body, is filled inside the cylinder 72, and is sealed inside the cylinder 72 so that the electric wire 52 does not come into contact with the cooling medium 37 so as not to come into contact with the inner surface of the cylinder 72. Holds the oscillator 71 and the electric wire 52.

When the vibrator 71 vibrates the cooler 32, which is a container for storing and cooling the cooling medium 37, the cooling medium 37 vibrates and a flow is generated. Therefore, articles such as foodstuffs are placed in the cooling medium having a lower temperature. It will be exposed, and articles such as foodstuffs will be exposed to the cooling medium 37 having a lower temperature, so that it can be frozen faster at a lower temperature.

The cooling medium 37 can contain an aqueous ethanol solution, a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 degrees Celsius or more and less than 500 degrees Celsius, and a water-soluble silicon compound. By mixing a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 ° C. or higher and lower than 500 ° C. and a water-soluble silicon compound in an aqueous ethanol solution, the hydrophilic powder becomes longer than the aqueous ethanol solution. Since the time-dispersed and the water-soluble silicon compound promotes the dispersion of the powder, the powder inhibits the coagulation of the ethanol aqueous solution and does not coagulate to a lower temperature than the case of the ethanol aqueous solution alone. , Will be able to be used at lower temperatures. This allows the article to be frozen faster. In addition to the electrical stimulation by the water-soluble silicon compound, the hydrophilic powder is dispersed in the ethanol aqueous solution by applying physical vibration by the vibrator 71 of the vibrating unit 36. When the vibrator 71 vibrates the cooler 32, which is a container for storing and cooling the cooling medium 37, the powder is dispersed and does not solidify to a lower temperature, so that it can be used at a lower temperature. become.

In addition, if the temperature used is the same, a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 degrees Celsius or more and less than 500 degrees Celsius and a water-soluble silicon compound can be mixed in an aqueous ethanol solution. The proportion of ethanol can be reduced and it can be used more safely. Since both the powder and the water-soluble silicon compound obtained by crushing the product obtained by pyrolyzing the seeds of a plant at 400 degrees Celsius or more and less than 500 degrees Celsius are harmless to the human body, it is assumed that they adhere to the immersed article. Can be handled more safely. In this way, solidification can be suppressed at lower temperatures to freeze articles more safely and faster.

The powder can be 0.5% by weight to 1.0% by weight with respect to the aqueous ethanol solution, and the water-soluble silicon compound can be 0.5% by weight to 1.0% by weight with respect to the aqueous ethanol solution. .. By doing so, the hydrophilic powder can be dispersed in the aqueous ethanol solution for a long time, and the water-soluble silicon compound can promote the dispersion of the powder.

When the powder is dispersed in an aqueous ethanol solution, the powder can be kept in a suspended state for 24 hours or more in a standing state. By doing so, the powder can inhibit the coagulation of the aqueous ethanol solution for a longer period of time even when it is allowed to stand.

The powder may have a representative value of 10 μm or less, which indicates the center of the particle size distribution. By doing so, the powder can be easily dispersed and the coagulation of the aqueous ethanol solution can be inhibited.

The powder may contain 15% to 19% by weight potassium and 1% to 3% by weight phosphorus. By doing so, the powder becomes hydrophilic and can be dispersed in the ethanol aqueous solution for a long time to inhibit the coagulation of the ethanol aqueous solution.

The powder can generate a zeta potential of minus 0.5 mV in a solution at pH 7. By doing so, the powders repel each other and are easily dispersed, and the coagulation of the aqueous ethanol solution can be inhibited. When the vibrator 71 vibrates the cooler 32, which is a container for storing and cooling the cooling medium 37, the vibration induces the movement of the powder, generates a weak electric current, and suppresses cell destruction during freezing. Will be done.

The powder can be made by crushing a product obtained by thermally decomposing seeds, which are beans. By doing so, it is possible to obtain a powder having desired properties more reliably, suppress coagulation at a lower temperature, and freeze the article more safely and faster.

The aqueous ethanol solution may contain less than 60% by weight of ethanol. By doing so, the water-soluble ethanol is treated as a non-dangerous substance in the Fire Service Act, and more cooling media 37 can be handled more easily.

A timer 53 that supplies electricity to the oscillator 71 via the electric wire 52 for a predetermined time can be further provided. By doing so, it is possible to freeze at a lower temperature and faster without raising the temperature of the cooling medium 37.

When the holding material 73 is filled, it can be hardened to become a rubber elastic body. By doing so, the vibration of the vibrator 71 can be transmitted to the cooler 32 more efficiently without suppressing the vibration of the vibrator 71.

The holding material 73 can be a silicone sealant.

The oscillator 71 can be made to vibrate by the piezoelectric element.

A powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 to 500 degrees Celsius is mixed with an aqueous ethanol solution, and a water-soluble silicon compound is mixed with the aqueous ethanol solution. The mixed aqueous ethanol solution is placed in a cooler 32, which is a cooling container, and cooled to a temperature lower than 0 ° C. in a liquid state. The article is placed in a sealed container, and the cooler 32, which is a cooling container, is vibrated to form a sealed container. A frozen product can be produced by immersing the contained article in a cooled aqueous ethanol solution placed in a vibrating cooler 32 and freezing it.

0.5% by weight to 1.0% by weight of powder can be mixed with an aqueous ethanol solution, and 0.5% by weight to 1.0% by weight of a water-soluble silicon compound can be mixed with an aqueous ethanol solution. it can.

Further, the embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

1 Freezer, 11 Main body, 12 doors, 13 Temperature controller, 31 Freezer room, 32 Cooler, 33 Condensin unit, 34 and 35 Insulation material, 36 Vibration part, 37 Cooling medium, 51 Vibration part, 52 Electric wire, 53 Timer, 54 switches, 71 oscillators, 72 cylinders, 73 holding materials, 81-1-1, 81-1-2, 81-2-1 and 81-2-2 plates

Claims (15)

In a freezer, which is a cooling medium for immersing and freezing an article, in which a cooling medium used in a liquid state is stored in a container and cooled.
An oscillator driven by electricity supplied via an electric wire to vibrate the container in contact with the side of the container in contact with the cooling medium.
A cylinder in which the vibrator and the electric wire are stored so as to expose a portion of the vibrator in contact with the container, which is longer than the longitudinal length of the vibrator and shorter than the depth of the container.
A rubber elastic that is filled inside the cylinder, seals the electric wire inside the cylinder so as not to come into contact with the cooling medium, and holds the vibrator and the electric wire so as not to come into contact with the inner surface of the cylinder. Freezer containing body retention material. In the freezer according to claim 1,
The cooling medium is a freezer containing an aqueous ethanol solution, a powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 degrees Celsius or more and less than 500 degrees Celsius, and a water-soluble silicon compound. In the freezer according to claim 2.
The powder is 0.5% by weight to 1.0% by weight based on the aqueous ethanol solution.
The freezer in which the water-soluble silicon compound is 0.5% by weight to 1.0% by weight based on the aqueous ethanol solution. In the freezer according to claim 2.
A freezer in which the powder is suspended for 24 hours or more in a stationary state when dispersed in the aqueous ethanol solution. In the freezer according to claim 2.
The powder has a representative value of 10 μm or less, which indicates the center of the particle size distribution, in a freezer. In the freezer according to claim 2.
The powder is a freezer containing 15% by weight to 19% by weight of potassium and 1% by weight to 3% by weight of phosphorus. In the freezer according to claim 2.
The powder is a freezer that produces a zeta potential of minus 0.5 mV in a pH 7 solution. In the freezer according to claim 2.
The powder is a freezer obtained by crushing the product obtained by thermally decomposing the seeds of beans. In the freezer according to claim 2.
The ethanol aqueous solution is a freezer containing less than 60% by weight of ethanol. In the freezer according to claim 1,
A freezer that further includes a timer that supplies electricity to the oscillator via the wires for a predetermined time. In the freezer according to claim 1,
A freezer in which the holding material hardens to become a rubber elastic body when filled. In the freezer according to claim 11.
The holding material is a freezer that is a silicone sealant. In the freezer according to claim 1,
The oscillator is a freezer that vibrates due to a piezoelectric element. A powder obtained by crushing a product obtained by thermally decomposing plant seeds at 400 to 500 degrees Celsius is mixed with an aqueous ethanol solution.
A water-soluble silicon compound is mixed with the aqueous ethanol solution,
The ethanol aqueous solution in which the powder and the silicon compound are mixed is placed in a cooling container and cooled to a temperature lower than 0 degrees Celsius while remaining in a liquid state.
Put the goods in a sealed container,
The cooling container is vibrated and
A method for producing a frozen product in which an article placed in a sealed container is immersed in a cooled aqueous solution of ethanol placed in the vibrating cooling container to freeze it. In the method for producing a frozen product according to claim 14,
0.5% by weight to 1.0% by weight of the powder is mixed with the aqueous ethanol solution.
A method for producing a frozen product, in which 0.5% by weight to 1.0% by weight of the water-soluble silicon compound is mixed with the aqueous ethanol solution.

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