WO2015060336A1

WO2015060336A1 - Refrigeration facility, method for manufacturing refrigerated food and drink products, and humidifier for refrigeration facility

Info

Publication number: WO2015060336A1
Application number: PCT/JP2014/078061
Authority: WO
Inventors: 信裕鴇巣
Original assignee: 株式会社川仙食品
Priority date: 2013-10-22
Filing date: 2014-10-22
Publication date: 2015-04-30
Also published as: JP2015081704A

Abstract

A refrigeration facility equipped with: a sub-zero temperature refrigeration space that can be opened and closed; an electroconductive transport device arranged within this refrigeration space and on which food and drink products are arranged; casters insulating this transport device from a floor surface, side surfaces, and a ceiling surface forming this refrigeration space; a power supply terminal connected to the transport device; a power supply device that applies voltage to the food and drink products through the power supply terminal; and a dehumidification mechanism that has a case through which air inside the refrigeration space passes, and that dehumidifies the air by applying voltage to the interior of the case. This refrigeration facility maintains the food and drink products in a supercooled state by applying voltage to the food and drink products in the closed refrigeration space.

Description

Refrigeration equipment, method for producing frozen food and drink, and dehumidification mechanism for refrigeration equipment

The present invention relates to a refrigeration facility for freezing food and drink, a method for producing frozen food and drink, and a dehumidifying mechanism for the refrigeration facility.

A technique for freezing foods and drinks such as fruits, vegetables and fresh fish while applying a voltage is known (see, for example, JP-A-2001-215074). The inventor of the present application has improved the above-described conventional technology, established a new technology for instantly freezing food and drink after being supercooled, and commercialized the frozen food and drink.

According to the new technology, food and drink are frozen in a sherbet shape without freezing, so they can be easily cut with a kitchen knife without thawing, are easy to cook and process, and can be easily edible because they can be easily chewed with teeth. . In addition, food and drink once frozen by the new technology can be transported and stored in a general refrigerator. Even in this case, it is not oxidized and dried, and the taste, texture, fragrance, and color are maintained for one year or longer as they are before freezing. Thereby, food and drink can be stably supplied in terms of quantity, quality and price. And food and drink can be supplied beyond a season, and a high-class feeling and special feeling can be given.

However, the above refrigeration techniques are affected by various factors such as the variety and size of food and drink, as with other refrigeration techniques. For this reason, variations occur in the frozen state. And reproducibility is low and cannot fully maintain the freshness of food and drink. Furthermore, the refrigeration equipment to which the new technology is applied is affected by a disturbance having a magnitude proportional to the scale, like other refrigeration equipment. For this reason, when the scale is increased for mass production, it is difficult to keep the frozen space in an ideal state. That is, a large amount of food and drink could not be frozen while maintaining freshness.

This invention is made | formed in view of the said subject, The manufacturing method of the frozen food and drink which manufactures frozen food and drink using this refrigeration equipment which can freeze food and drink while maintaining freshness, and An object of the present invention is to provide a dehumidifying mechanism for a refrigeration facility.

(1) The present invention provides a freezing space that is openable and closable, a conductive placement means in which food and drink are placed in the freezing space, and a space forming the frozen space. An insulator that insulates the surface; a power supply terminal connected to the arrangement means; a power supply device that applies a voltage to the food via the power supply terminal; and a housing through which air in the frozen space passes. A dehumidifying mechanism for dehumidifying the air by applying a voltage to the housing, and applying the voltage to the food and drink in the closed frozen space to maintain the food and drink in a supercooled state. This is a refrigeration facility.

According to the present invention, a uniform electric field can be formed in the frozen space by applying a voltage to food and drink in the frozen space. Thereby, food and drink can be frozen, keeping freshness. And when taking out food / drinks and performing a process sequentially, even if it is a time when open | released freezing space and external air flows in, since the dehumidification mechanism is provided, generation | occurrence | production of the frost resulting from external air can be prevented. Thereby, the fall or stop of the function of the heat exchanger arrange | positioned in freezing space or an air blower can be prevented. As a result, a large amount of food and drink can be frozen in sequence while maintaining freshness.

(2) The refrigeration equipment according to (1) above, wherein the refrigeration equipment according to (1) is provided with a cover that has air permeability and windproof properties and covers the arrangement means while being insulated from the arrangement means. It is.

According to the above invention, since the cover is windproof, heat transfer to food and drink due to convection in the frozen space can be reduced. Thereby, before applying a voltage, food and drink can be prevented from freezing by general freezing. As a result, food and drink can be taken in and out while keeping the temperature in the freezing space below the freezing point, and the processing can be sequentially performed. As a result, a large amount of food and drink can be frozen in sequence while maintaining freshness.

(3) The present invention is also the refrigeration facility according to the above (2), wherein the cover has conductivity.

According to the above invention, a uniform and strong electric field can be formed specifically for the inside of the cover. This is because the cover is a small space forming surface, and the distance between the food and drink and the space forming surface is smaller than in the case where there is no cover. As a result, various unstable factors (types of food and drink, variation in quality of each individual, size for each individual, total amount, arrangement, contact state of food and food and arrangement means, position of arrangement means, power supply terminal A large amount of foods and drinks can be frozen together more accurately while maintaining freshness in a situation of having a connection state, temperature in the frozen space, humidity, wind contact condition, etc.).

A weak electric field is also formed on the outside of the cover. Due to this electric field, moisture contained in the air outside the cover adheres to the space forming surface. Thereby, it can prevent that frost adheres to the heat exchanger and fan which are arrange | positioned in freezing space. As a result, the function of the heat exchanger and the blower can be further prevented from being lowered or stopped.

(4) The present invention is also the refrigeration facility according to the above (2), wherein the cover has an insulating property.

According to the invention described above, a strong electric field can be formed by confining charges inside the cover. Thereby, in the situation which has various unstable elements, a lot of food and drink can be frozen more accurately collectively, keeping freshness.

(5) The refrigeration equipment according to any one of (1) to (4) above, wherein the food and drink is contained in a member having conductivity and air permeability. is there.

According to the above invention, heat transfer to food and drink due to convection in the frozen space can be further reduced.

(6) The present invention also includes a freezing space that is openable and closable, a conductive placement means that is disposed in the freezing space and in which food and drink are placed, and has air permeability and windproof properties. A cover that covers the arrangement means in an insulated state, an insulator that insulates the arrangement means from a space forming surface that forms the frozen space, a power supply terminal connected to the arrangement means, and the power supply terminal A power supply device for applying a voltage to the food and drink, and maintaining the food and drink in a supercooled state by applying a voltage to the food and drink in the closed frozen space. Equipment.

(7) The present invention is also the refrigeration facility according to the above (6), wherein the cover has conductivity.

According to the above invention, a uniform and strong electric field can be formed specifically for the inside of the cover. This is because the cover is a small space forming surface, and the distance between the food and drink and the space forming surface is smaller than in the case where there is no cover. Thereby, in the situation which has various unstable elements, a lot of food and drink can be frozen more accurately collectively, keeping freshness.

(8) The present invention is also the refrigeration facility according to the above (6), wherein the cover has an insulating property.

(9) The present invention also includes an openable / closable freezing space below the freezing point, and conductive placement means in which the food and drink contained in the conductive and non-breathable member is placed in the freezing space. An insulator that insulates the arrangement means from a space forming surface that forms the frozen space; a power supply terminal connected to the arrangement means; and a power supply device that applies a voltage to the food via the power supply terminal; The refrigeration equipment is characterized by maintaining the food and drink in a supercooled state by applying a voltage to the food and drink in the closed frozen space.

According to the above invention, heat transfer to food and drink due to convection in the frozen space can be reduced. Thereby, before applying a voltage, food and drink can be prevented from freezing by general freezing. As a result, food and drink can be taken in and out while keeping the temperature in the freezing space below the freezing point, and the processing can be sequentially performed. As a result, a large amount of food and drink can be frozen in sequence while maintaining freshness.

(10) The refrigeration equipment according to any one of (1) to (9), wherein the refrigeration equipment further includes moving means that allows the placement means to be carried into and out of the refrigeration space. is there.

According to the above-described invention, it is possible to arrange a plurality of foods and drinks in the frozen space simply by carrying the arrangement means in which the plurality of foods and drinks are arranged into the frozen space. That is, it is not necessary to arrange a plurality of foods and drinks one by one in the frozen space. And only by carrying out the arrangement | positioning means with which several food / beverage was arrange | positioned from frozen space, several food / beverage can be collectively taken out from frozen space. That is, it is not necessary to take out a plurality of foods and drinks one by one from the arrangement means in the frozen space.

In this way, it is possible to eliminate work in a freezing space where there is a risk of electric shock, and it is safe. Moreover, the time for opening the freezing space can be shortened. As a result, the influence of outside air can be reduced, and the inside of the frozen space can be kept in a constant state. As a result, the inside of the frozen space can be kept in an ideal state. That is, a large amount of food and drink can be frozen while maintaining freshness. And generation | occurrence | production of the frost resulting from inflow of external air can be prevented. Thereby, the fall or stop of the function of the heat exchanger arrange | positioned in freezing space or an air blower can be prevented.

(11) In the present invention, the refrigeration space further includes a carry-in port of the arrangement unit and a carry-out port of the arrangement unit different from the carry-in port, and the arrangement unit moves from the carry-in port to the carry-out port. The refrigeration equipment according to (10) above, wherein the food and drink is frozen after being kept in a supercooled state in the process of moving.

According to the above invention, the flow in the freezing space can be made in one direction from the carry-in port to the carry-out port. Thereby, the arrangement | positioning means which has arrange | positioned food / beverage can be sequentially carried out from frozen space, carrying the arrangement | positioning means which arrange | positioned food / beverage sequentially in frozen space. As a result, a larger amount of food and drink can be handled.

(12) The present invention is also the refrigeration facility according to the above (10) or (11), wherein the moving means also serves as the insulator.

According to the above invention, the arrangement means can be insulated from the space forming surface forming the refrigeration space with a simple configuration.

(13) The present invention is also the refrigeration facility according to any one of (1) to (12) above, wherein the power supply terminal enables switching between connection / opening to the arrangement means. .

(14) The present invention is also characterized in that the arrangement means includes a plurality of trays having conductivity, and a conductive shelf that arranges the plurality of trays at intervals in the vertical direction. The refrigeration equipment according to any one of (1) to (13) above.

According to the above invention, it is possible to deal with a larger amount of food and drink.

(15) The refrigeration equipment according to (14), wherein the present invention further includes a plurality of the arrangement means, and the plurality of arrangement means includes a connection means for connecting the shelves to each other.

(16) The present invention further includes a freezer below freezing point for storing and storing food and drink frozen in the frozen space in a state of being placed in the placement means (1) The refrigeration facility according to any one of (15) to (15).

According to the above invention, food and drink can be frozen in the freezing space, and the food and drink frozen in the freezing space can be stored in the freezer in a frozen state. That is, the function of storing frozen food and drink in a frozen state can be transferred from the frozen space to a freezer having a relatively low initial cost and running cost (for example, a general freezer having no voltage application function). . Thereby, after freezing a large amount of food and drink while maintaining freshness, it can be stored at a low cost in a frozen state.

(17) The present invention is also applied to the food and drink by the power supply device while referring to each of the AC current value and the DC current value supplied to the power supply terminal, or each of the AC voltage value and the DC voltage value. A control device that controls the AC voltage value and the DC voltage value, wherein the power supply device causes a current obtained by superimposing alternating current and direct current to flow through the food and drink through the power supply terminal, In the process of simultaneously applying an AC voltage and a DC voltage to the food and drink and lowering the temperature of the food and drink in a zone below freezing point, the control device gradually decreases the direct current value supplied to the power supply terminal. The refrigeration equipment according to any one of (1) to (16) above, wherein the refrigeration equipment is controlled so as to perform the control.

According to the above invention, it is possible to apply each of the AC voltage and the DC voltage at a stable and accurate value in a situation having various uncertain factors. Thereby, it can suppress that variation arises in the frozen state. And reproducibility can be improved and a lot of food and drink can be frozen, keeping freshness.

(18) The present invention relates to a freezing space that is below freezing, a refrigerator that cools the freezing space to bring the freezing space below freezing, and a conductive material that is placed in the freezing space and on which food and drink are placed. An AC voltage applied to the food and drink through the mounting means, the insulating means for insulating the mounting means from the space forming surface forming the frozen space, a power terminal connected to the mounting means, and the power terminal. And the food and drink by the power supply device while referring to each of the AC current value and the DC current value supplied to the power supply terminal, or each of the AC voltage value and the DC voltage value. A control device for controlling the AC voltage value and the DC voltage value to be applied to the refrigeration equipment, wherein the food and drink are brought into a supercooled state.

(19) In the power supply apparatus according to the present invention, an AC voltage and a DC voltage can be applied to the food and drink by causing a current obtained by superimposing alternating current and direct current to flow through the food and drink through the power terminal. Simultaneously applied, the control device controls the DC current value supplied to the power supply terminal to gradually decrease in the process in which the refrigerator lowers the temperature of the refrigeration space in a zone below freezing point. The refrigeration equipment according to (18), wherein the food and drink is maintained in a supercooled state.

(20) The present invention also enables the water in the food and drink to be released to the outside of the food and drink or into the frozen space, and the refrigerator lowers the temperature of the frozen space in a zone below the freezing point. In the process, the control device performs constant voltage control on the AC voltage and the DC voltage so that the DC current value supplied to the power supply terminal is gradually reduced, and the food and drink are in a supercooled state. The refrigeration equipment according to (18) or (19) above, wherein

(21) The present invention is also a method for producing frozen food and drink, characterized by producing frozen food and drink using the refrigeration equipment according to any one of (1) to (20) above.

(22) The present invention is also a dehumidifying mechanism for a refrigeration facility that dehumidifies air in a freezing space for freezing food and drink, and a casing through which air in the freezing space passes, and a voltage in the housing. A dehumidifying mechanism for refrigeration equipment, comprising: a voltage applying mechanism for applying.

According to the above invention, a large amount of frozen foods and drinks with freshness can be produced.

According to the refrigeration equipment described in (1) to (21) of the present invention and the dehumidification mechanism for refrigeration equipment described in (22), food and drink can be frozen while maintaining freshness. Moreover, according to the manufacturing method of the frozen food and drink as described in said (19) of this invention, the frozen food and drink which maintained freshness can be manufactured.

It is a front view which shows the outline of the freezing equipment which concerns on 1st Embodiment of this invention. It is a circuit diagram which shows the outline of a power supply device and a control apparatus. It is the time history which shows a voltage value. (A) And (B) is the schematic which shows the structure of a dehumidification mechanism. It is an image figure explaining the freezing process of food and drink. It is the time history which shows the internal temperature measured in Experiment 1, and a direct-current value, and shows the case where the food / beverage in an exposed state is frozen and the food / beverage in the sealed state is frozen. It is the photograph of what cut | disconnected the food / beverage frozen in Experiment 1, the food / beverage frozen in the state where the right side was exposed, and the food / beverage frozen in the state sealed on the left side are shown. It is a time history showing the internal temperature and DC current value measured in Experiment 2, when the voltage is applied when the internal temperature is 5 ° C, and when the voltage is applied when the internal temperature is 10 ° C below freezing point Indicates. It is a top view which shows the outline of the freezing equipment which concerns on 2nd Embodiment of this invention.

Hereinafter, the refrigerator according to the present invention will be described in detail with reference to the drawings.

First Embodiment First, the configuration of the refrigeration facility 1 according to the first embodiment will be described with reference to FIGS. FIG. 1 is a front view showing an outline of the refrigeration facility 1. FIG. 2 is a circuit diagram schematically showing the power supply device 16 and the control device 22. FIG. 3 is a time history showing voltage values. 4A and 4B are schematic views showing the configuration of the dehumidifying mechanism 29. FIG.

Refrigeration equipment 1 shown in FIG. 1 employs a new technology that instantaneously freezes food and drink XA1 (see FIG. 5) after maintaining it in a supercooled state. This refrigeration equipment 1 is a batch system that repeatedly freezes food and drink XA1 for each predetermined amount. Specifically, the refrigeration facility 1 includes a freezer 10 that freezes food and drink XA1 with new technology, and a freezer storage 11 that stores the food and drink XA1 frozen in the freezer 10 in a frozen state. Yes.

The freezer 10 stirs the freezing space 12 that can be opened and closed, a heat exchanger (refrigerator) 13 that cools the freezing space 12 to cool the freezing space 12 below freezing, and air in the freezing space 12. The blower 14, the transport device 15 for carrying the food XA1 into and out of the frozen space 12, the power supply terminal 30 connected to the transport device 15, and the voltage applied to the food XA1 via the power supply terminal 30. Power supply device 16, a control device 22 that controls a voltage value applied by the power supply device 16, a dehumidifying mechanism 29 that dehumidifies the air in the freezing space 12, and a cover 31 that covers the transport device 15. .

The freezing space 12 is set to an arbitrary size that can accommodate one or a plurality of transfer devices 15. The frozen space 12 includes a floor surface 17, a side surface 18, and a ceiling surface 19 as conductive space forming surfaces. An insulating rubber sheet (not shown) is laid on the floor surface 17. The side surface 18 and the ceiling surface 19 may also be covered with an insulating rubber sheet. On the side surface 18, a loading / unloading port 20 for loading / unloading the transfer device 15 is formed. The carry-in / out port 20 is openable and closable with a door 21 attached thereto.

The heat exchanger 13 is connected to a condenser (not shown) arranged outside the freezing space 12. The heat exchanger 13 takes the heat in the refrigeration space 12 to cool the refrigeration space 12 below freezing point.

The blower 14 includes a plurality of rotating blades (reference numerals omitted). The blower 14 rotates a plurality of blades to generate an air flow in the refrigeration space 12 and equalizes the temperature and humidity in the refrigeration space 12.

The transport device 15 can be manually operated. The transport device 15 includes a conductive shelf 24, a plurality of trays 25 on which the food and drink XA1 are arranged, and a plurality of casters 26 that allow the shelf 24 to be carried in and out of the frozen space 12. That is, the transport device 15 functions as an arrangement unit on which the food and drink XA1 is arranged.

Note that the food / drink XA1 may be left in the container. For example, when beer is adopted as the food and drink XA1, it may be kept in a glass bottle. However, when using a container having low electrical conductivity such as glass, it is possible to reliably apply a voltage to the food and drink XA1 by wrapping the container with aluminum foil having high electrical conductivity. And when the frozen quality resulting from the moisture content of the food / drink XA1 is taken into account, it is preferable that the food / drink XA1 is not exposed and covered without covering the surface of the food / drink XA1. Etc. means that it is bare.) That is, it is preferable that the food / drink XA1 is arranged in a state in which the moisture of the food / drink XA1 can be discharged into the frozen space 12. Examples of the food and drink XA1 that is particularly suitable for arrangement with bareness include root vegetables (such as radishes) and fruits (such as apples) in a lump that has not been finely cut.

On the other hand, when the frozen quality resulting from the temperature inside the food / drink XA1 is taken into consideration, the food / drink XA1 is preferably housed in a member having conductivity and air permeability. Thus, by storing in the non-breathable member, the food and drink XA1 is prevented from being immediately cooled to below freezing, even when it is put into a warehouse below freezing. Examples of the conductive and non-breathable member include an aluminum vapor-deposited film, an aluminum-coated film, and a film (for example, aluminum foil) made of a conductive and non-breathable material. Examples of the food and drink XA1 that is particularly suitable for being accommodated in a conductive and non-breathable member include cut fruits and leafy vegetables. Of course, even in this case, a structure in which moisture is released outside the food and drink XA1 and into the film may be employed. Further, in some cases, it is also preferable that moisture (water vapor) vaporized outside the food or drink XA1 can be released to the outside through the film. In this case, for example, a material such as a gas permeable film can be employed.

That is, how to arrange the food and drink XA1 is determined in consideration of various conditions such as the moisture content of the food and drink XA1 and the internal temperature. In the case of root vegetables and fruits in the form of a lump that is not cut finely, even if the internal temperature is kept below freezing point, it will not freeze immediately by general freezing before applying voltage, It is preferable to arrange it as it is exposed. On the other hand, in the case of cut fruit and leafy vegetables, if the internal temperature is kept below the freezing point from the beginning, it will freeze immediately by general freezing before applying voltage, so it is placed as it is exposed. It is not preferable to be done.

The shelf 24 arranges a plurality of trays 25 at intervals in the vertical direction. The shelf 24 is made of a conductive material such as stainless steel. Specifically, the shelf 24 includes stainless steel columns as main components. And the shelf 24 is provided with the electroconductive coupler 27 as a connection means for connecting the conveying apparatuses 15 mutually.

The plurality of trays 25 are each made of a conductive material such as stainless steel. Each of the plurality of trays 25 is detachably disposed on the shelf 24.

Each of the plurality of casters 26 has a tire 28 made of an insulator such as rubber. The plurality of casters 26 are attached below the shelf 24, and the tire 28 rolls on the floor surface 17 of the frozen space 12. In other words, the plurality of casters 26 function as moving means that allows the transport device 15 to be carried in and out of the refrigeration space 12. The plurality of casters 26 have a lock mechanism that restricts rolling of the tire 28. In addition, the plurality of casters 26 insulates the transport device 15 from the floor surface 17 and enables charging of the food and drink XA1 disposed on the tray 25. The plurality of casters 26 have a height from the floor surface 17 of the shelf 24 and the tray 25 of 10 cm or more, and prevent electricity from being discharged from the floor surface 17 and freezing of the caster 26 surface.

The coupler 27 connects the shelves 24 so that the conveying devices 15 can be energized.

The power terminal 30 has a clip shape and is attached to and detached from the transport device 15. The power supply terminal 30 is connected to the power supply device 16 via a cable (not shown) and the control device 22. That is, the power supply terminal 30 enables connection / release switching with respect to the transport device 15.

The power supply device 16 simultaneously applies an alternating current and a direct current to the food and drink XA1 by flowing an alternating current and a direct current through the control device 22, the cable (not shown), and the power supply terminal 30 in a superimposed state. Apply. The power supply device 16 is grounded and functions as a ground. That is, the power supply device 16 functions as a ground that discharges a charge charged by application of a voltage.

As shown in FIG. 2, the power supply device 16 includes a positive power supply unit 61, a negative power supply unit 62, and the like. The control device 22 includes an ammeter 63, a positive transformer 64, a negative transformer 65, a voltmeter 66, a reference signal input unit 67, a feedback signal input unit 68, an error amplifier 69, and an optical isolator. 70 and the like.

The positive power source 61 generates a current for applying a positive voltage. The negative power supply unit 62 generates a current for applying a negative voltage. The ammeter 63 measures the alternating current value from the positive power supply unit 61 or the negative power supply unit 62, its frequency, and the direct current value, and inputs the values to the feedback signal input unit 68 as a feedback signal.

The positive-side transformer 64 transforms the positive voltage applied by the positive-side power supply unit 61 based on the control signal input from the optical isolator 70, and applies it to the food / drink XA1. The negative transformer 65 transforms the negative voltage applied by the negative power supply unit 62 based on the control signal input from the optical isolator 70, and applies it to the food or drink XA1. The voltmeter 66 measures the AC voltage value and the DC voltage value from the positive side transformer 64 or the negative side transformer 65 and inputs the values to the feedback signal input unit 68 as a feedback signal.

The reference signal input unit 67 receives a preset desired AC current value and its frequency and DC current value, or a preset desired AC voltage value and DC voltage value. The value of the ammeter 63 and the value of the voltmeter 66 are input to the feedback signal input unit 68 as a feedback signal. The error amplifier 69 amplifies the difference between the signal from the reference signal input unit 67 and the signal from the feedback signal input unit 68 and outputs it as a control signal. The optical isolator 70 outputs the control signal from the error amplifier 69 to the positive side transformer 64 or the negative side transformer 65.

Such a control device 22 is configured so that the AC voltage applied to the food / drink XA1 by the power supply device 16 while feeding back each of the AC current value and the DC current value, or each of the AC voltage value and the DC voltage value to a desired value. Value and DC voltage value are controlled. Specifically, the control device 22 performs a constant voltage control on the AC voltage value and the DC voltage value in the process of lowering the temperature of the food / drink XA1 in the band below freezing point, so that the DC current supplied to the power supply terminal 30 is controlled. Control so that the value gradually decreases. Thereby, the food / drink XA1 is maintained in a supercooled state. Furthermore, the control device 22 can also feed back the frequency of the alternating current and the frequency of the alternating voltage to a desired frequency. The DC voltage value is controlled so as to be a negative DC voltage and the absolute value of the DC voltage is larger than the maximum value of the AC voltage. That is, as shown in FIG. 3, the time history of the voltage value applied to the food / drink XA1 is a waveform that always vibrates with a negative value. In addition, in order to carry out constant voltage control of the AC voltage value and the DC voltage value, an AC current and a DC current are applied from the power supply terminal 30 via a common cable. In this case, compared to the case where the voltages are applied at different power supply terminals, the current does not leak between the AC voltage and the DC voltage, so that the voltage can be accurately feedback controlled.

Note that the control device 22 performs the above control only when the door 21 is closed. That is, when the door 21 is open, the control device 22 does not perform the above control and sets the voltage value applied by the power supply device 16 to zero. Thus, the control device 22 functions as a safety device of the power supply device 16 and prevents an electric shock accident due to the opening of the door 21. In addition, the control device 22 sets an upper limit value of the current value flowing from the power supply device 16 and controls the power supply device 16 to be equal to or less than the upper limit value.

As shown in FIG. 4A, the dehumidifying mechanism 29 includes a casing 29a, a pair of electrodes 29b1, a fan 29c, a drain (not shown), and the like. The casing 29a is made of a conductive material and has a suction port 29a1 and a discharge port 29a2. The casing 29a has a structure through which air in the frozen space 12 passes. Specifically, the housing 29a has a structure in which the air in the refrigeration space 12 is sucked from the suction port 29a1 and then discharged from the discharge port 29a2 into the refrigeration space 12. The pair of electrodes 29b1 are disposed in the refrigeration space 12 in a state of being insulated from the housing 29a and spaced from each other. The pair of electrodes 29b1 is electrically connected to the power supply device 16 or another power supply device (not shown). The pair of electrodes 29b1 applies a voltage in the housing 29a by passing a current from one to the other. An electric field is formed in the housing 29a by the application of the voltage. Thereby, the structure of the charge of moisture contained in the air in the housing 29a is destroyed. That is, it is presumed that the molecular structure (atomic structure) of the water changes and ionizes. Moisture ionized by changing the molecular structure hardly freezes and adheres to the inner peripheral surface of the housing 29a. The water adhering to the inner peripheral surface of the housing 29a is collected through the drain. The fan 29c rotates to generate a flow that sucks the air in the refrigeration space 12 from the suction port 29a1 and then discharges it from the discharge port 29a2 into the refrigeration space 12. The housing 29a is grounded by being connected to a ground (not shown).

Alternatively, as shown in FIG. 4B, the dehumidifying mechanism 29 includes a housing 29a, one electrode 29b2, a fan 29c, a drain (not shown), and the like. Here, a structure different from that in the case of FIG. The electrode 29b2 is disposed in the frozen space 12 in a state of being insulated from the housing 29a. The electrode 29b2 is electrically connected to the power supply device 16 or another power supply device (not shown). The pair of electrodes 29b2 applies a voltage in the housing 29a by a current from the power supply device.

It should be noted that the dehumidifying mechanism 29 may be arranged in any manner as long as it can dehumidify the air in the frozen space 12. However, the possibility of frost on the heat exchanger 13 can be reduced by disposing the dehumidifying mechanism 29 at a location adjacent to the upstream side of the heat exchanger 13 and supplying the dehumidified air to the heat exchanger 13. . Or the dehumidification mechanism 29 is arrange | positioned in the location adjacent to the downstream of the heat exchanger 13, and the dehumidification efficiency in a store | warehouse | chamber can be improved by diffusing the cooling air immediately after dehumidification in the freezing space 12. FIG.

Referring back to FIG. The cover 31 is made of a material having air permeability and wind resistance. The cover 31 covers the transfer device 15 while being insulated from the transfer device 15. Specifically, the cover 31 is insulated from the transfer device 15 by interposing an insulator (not shown) such as an insulator at a place where the cover 31 and the transfer device 15 come into contact. The insulator may be fixed to the transfer device 15 or may be fixed to the inner surface side of the cover 31. Thus, by covering with the cover 31 made of a windproof material, the food and drink XA1 is prevented from being immediately cooled to below freezing, even when it is put into a freezer. Although it is preferable to cover the transport device 15 with the cover 31, it is not essential and the transport device 15 may not be covered with the cover 31. The cover 31 may be a conductive one or an insulating one according to the type or amount of the food / drink XA1.

The freezer storage 11 stores and stores the food and drink XA1 frozen in the freezing space 12 of the freezer 10 while being placed on the tray 25 of the transport device 15. The frozen storage 11 includes a freezing space 32 that can be opened and closed, a heat exchanger 33 that cools the freezing space 32 below freezing, and a blower 34 that stirs the air in the freezing space 32. .

In addition, the structure of the freezing space 32, the heat exchanger 33, and the air blower 34 with which the freezer storage 11 is equipped is the same as that of the freezing space 12, the heat exchanger 13, and the air blower 14 with which the freezer 10 is provided, and the description thereof is omitted. .

Next, the freezing operation of the food and drink XA1 in the refrigeration facility 1 will be described.

First, a plurality of foods and drinks XA1 are arranged on the tray 25 of the transport device 15 outside the frozen space 12. And the door 21 of the freezer 10 is opened, and the conveyance apparatus 15 is carried in into the freezing space 12 below freezing point. In addition, the power terminal 30 is connected to the transport device 15. Furthermore, the door 21 is closed and the food and drink XA1 is confined in the frozen space 12. At this time, it is preferable that the freezing of the food / drink XA1 is not started. For this reason, it is preferable that the temperature in the frozen space 12 is not below freezing. In addition, although the temperature in the freezing space 12 may be below freezing point, it is preferable that freezing of the food / drink XA1 does not proceed. Therefore, when the temperature in the freezing space 12 is below freezing point, it is necessary to proceed quickly. is there. Thereafter, the AC voltage and the DC voltage are simultaneously applied to the food and drink XA1, and then the heat exchanger 13 is operated to start cooling, thereby freezing by the new technology.

The water | moisture content of the said food / drink XA1 is discharge | released by cooling food / beverage XA1 below freezing point. It is assumed that the moisture disappears due to freezing or adhering to the floor surface 17, the side surface 18, the ceiling surface 19, etc. constituting the frozen space 12. The amount of water released from the food / drink XA1 gradually decreases with a decrease in temperature, and finally no water is released from the food / drink XA1. In addition, the water | moisture content of food / beverage XA1 is only discharge | released moderately, and most water | moisture content stays in the inside of food / beverage XA1. That is, it is presumed that the amount of moisture released into the frozen space 12 and remaining in the frozen space 12 decreases as the temperature decreases. Since the amount of moisture in the frozen space 12 is proportional to the amount of discharge from the food / drink XA1 to which a voltage is applied, it is assumed that the amount of discharge from the food / drink XA1 gradually decreases as the temperature decreases. . As a result, it is assumed that the value of the direct current flowing through the food and drink XA1 gradually decreases.

And, for example, after the freezing space 12 reaches 20 ° C. below freezing point, the application of the AC voltage and the DC voltage is stopped, and the food and drink XA1 is discharged, and then the door 21 of the freezer 10 is opened. Further, the power terminal 30 is removed from the transport device 15. Further, the conveying device 15 is carried out of the freezing space 12.

Thereafter, the door (reference number omitted) of the frozen storage 11 is opened, and the transport device 15 is carried into the freezing space 32 below freezing point. Then, the door is closed, and the food and drink XA1 is confined in the frozen space 32. Thereby, the food and drink XA1 frozen in the freezer 10 is stored in a frozen state.

Also, when the stored frozen food XA1 is shipped, the door of the frozen storage 11 is opened and the transfer device 15 is carried out of the frozen space 32.

Next, the freezing process of the food / drink XA1 in the freezer 10 will be described with reference to FIG. FIG. 5 is an image diagram illustrating a freezing process of the food / drink XA1.

As shown in FIG. 5, the food and drink XA1 is in a supercooled state of, for example, 10 ° C. below the freezing point by being simultaneously applied with an AC voltage and a DC voltage. Then, it freezes instantaneously, for example at 20 degreeC below freezing point.

[Experiment 1] Next, Experiment 1 in which the influence of moisture contained in the food and drink XA1 on the frozen state will be described with reference to FIGS. FIG. 6 is a time history showing data measured in Experiment 1 (temperature in the frozen space 12, value of DC current applied to the food XA1), the horizontal axis indicates time [minutes], and the vertical axis indicates temperature. [° C.] and DC current value [mA] are shown. The case where frozen food / drink XA1 is frozen is indicated by a hollow plot (◯ or □). The case where the food / drink XA1 in a sealed state (vacuum packed) is frozen is indicated by a black plot (● or ■). The temperature in the frozen space 12 is indicated by a circular plot (◯ or ●). The DC current value is indicated by a square plot (□ or ■). FIG. 7 is a photograph of the food and drink XA1 frozen in the same experiment as Experiment 1, in which the right side shows the food and drink XA1 frozen in an exposed state, and the left side is sealed and the food and drink XA1 frozen. Show.

In this Experiment 1, the change in the internal temperature [° C.] and the direct current value [mA] when the exposed food and drink XA1 is frozen, and the internal temperature when the sealed food and drink XA1 is frozen [ [° C.] and DC current value [mA] were measured and compared. Moreover, food-drink XA1 frozen in this experiment 1 was cut with the knife.

The internal humidity at the start of the experiment was about 55%. The applied voltage was a DC voltage of −2500V and an AC voltage of 1500V. As food / drink XA1, what cut one radish into 1/3 was used. However, FIG. 7 shows a state in which an experiment similar to Experiment 1 performed with an apple (in an uncut state) is cut in half. This is because the difference in appearance was not clear in radish.

As shown in FIG. 6, when the exposed food / drink XA1 was frozen, the direct current value [mA] gradually decreased as the internal temperature [° C.] decreased. On the other hand, when the food / drink XA1 in a sealed state was frozen, the direct current value [mA] became substantially constant at a low value regardless of the decrease in the internal temperature [° C.]. Moreover, any food and drink XA1 could be easily cut with a knife.

When comparing the two, when the food / drink XA1 in an exposed state was frozen, the DC current value [mA] was higher than when the food / drink XA1 in a sealed state was frozen. This is presumed to be due to discharge due to moisture released from the food / drink XA1. That is, if the direct current value [mA] is high, it is presumed that the discharge amount is large. If so, when the exposed food / drink XA1 is frozen, it is assumed that the amount of water released from the food / drink XA1 gradually decreases as the temperature decreases. However, not all moisture is released, and the release of moisture stops in the middle as the temperature decreases.

As shown in FIG. 7, it can be seen that the state (color) of the food and drink XA1 that is sealed and frozen differs between the inner part and the outer part. This originates in the water | moisture content which should be discharge | released at the time of cooling staying in the outer part in the said food-drink XA1. For this reason, the outer side part in food-drinks XA1 is frozen in the state of excess water compared with an inner side part, and it can be said that frozen quality is bad. On the other hand, it can be seen that the food / drink XA1 frozen by exposure has released moderate moisture, and the state (color) is uniform between the inner part and the outer part.

[Experiment 2] Next, Experiment 2 in which the timing of appropriate voltage application is examined will be described with reference to FIG. FIG. 8 is a time history showing data measured in Experiment 2 (temperature in the frozen space 12, value of direct current applied to the food XA1), the horizontal axis indicates time [minutes], and the vertical axis indicates temperature. [° C.] and DC current value [mA] are shown. A case where a voltage is applied when the temperature in the frozen space 12 is 5 ° C. is indicated by a hollow plot (◯ or □). A case where a voltage is applied when the temperature in the freezing space 12 is 10 ° C. below freezing is indicated by a black plot (● or ■). The temperature in the frozen space 12 is indicated by a circular plot (◯ or ●). The DC current value is indicated by a square plot (□ or ■).

In this experiment 2, the transition of the internal temperature [° C.] and the direct current value [mA] when a voltage is applied when the temperature in the frozen space 12 is 5 ° C., and the temperature in the frozen space 12 is 10 ° C. below freezing point. When the voltage was applied at the time, the internal temperature [° C.] and the transition of the direct current value [mA] were measured and compared. Moreover, food-drinks XA1 frozen in this experiment 2 were cut with the knife.

The internal temperature at the start of the experiment was about 50%. The applied voltage was a DC voltage of −2500V and an AC voltage of 1500V. As food / drink XA1, what cut one radish into 1/3 was used.

As shown in FIG. 8, when a voltage is applied when the temperature in the frozen space 12 is 5 ° C. (the time before freezing of the food / drink XA 1), the DC current decreases as the internal temperature [° C.] decreases. The value [mA] gradually decreased. On the other hand, when a voltage was applied when the temperature in the freezing space 12 was 10 ° C. below freezing point, the DC current value [mA] became substantially constant at a low value regardless of the decrease in the internal temperature [° C.]. . That is, when a voltage is applied when the temperature in the frozen space 12 is 10 ° C. below freezing point, the release of moisture is completed at the time when the voltage is applied, and the food and drink XA1 has already been frozen (general freezing). You can see that it is closed. In fact, when a voltage was applied when the temperature in the frozen space 12 was 10 ° C. below freezing point, the food and drink XA1 could not be cut with a knife. In addition, when the voltage was applied when the temperature in the frozen space 12 was 5 ° C., the food and drink XA1 could be easily cut with a knife.

Thus, according to the refrigeration facility 1, a uniform electric field can be formed in the frozen space 12 by applying a voltage to the food and drink XA1 in the frozen space 12. Thereby, food-drinks XA1 can be frozen, keeping freshness. And when putting in and out food / drink XA1 and performing a process sequentially, even if it is a time when the freezing space 12 is opened and outside air flows in, since the dehumidifying mechanism 29 is provided, the generation of frost caused by the outside air is prevented. Can be prevented. Thereby, the fall or stop of the function of the heat exchanger 13 and the air blower 14 which are arrange | positioned in the frozen space 12 can be prevented. As a result, a large amount of food and drink XA1 can be sequentially frozen while maintaining freshness.

And when covering the said conveying apparatus 15 with the cover 31 in the state insulated with the conveying apparatus 15, since the cover 31 has windproof property, the heat transfer to the food / drink XA1 by the convection in the frozen space 12 is carried out. Can be reduced. Thereby, before applying a voltage, food and drink XA1 can be prevented from freezing by general freezing. As a result, the food and drink XA1 can be taken in and out and the processing can be sequentially performed while keeping the temperature in the frozen space 12 below the freezing point. As a result, a large amount of food and drink XA1 can be sequentially frozen while maintaining freshness.

In addition, when the cover 31 has conductivity, it can be specialized inside the cover 31 to form a homogeneous and strong electric field. This is because the cover 31 is a small space forming surface, and the distance between the food / drink XA1 and the space forming surface is small compared to the case where the cover 31 is not provided. Thereby, various unstable elements (type of food and drink XA1, variation in quality of each individual, size for each individual, total amount, arrangement, contact state of food and drink XA1 and transport device 15, position of transport device 15 In a situation where the power supply terminal 30 is connected, the temperature in the freezing space 12, the humidity, the wind condition, etc.), a large amount of food and drink XA1 can be frozen together more accurately while maintaining freshness.

Note that a weak electric field is also formed on the outside of the cover 31. Due to this electric field, moisture contained in the air outside the cover 31 adheres to the floor surface 17, the side surface 18, and the ceiling surface 19 which are space forming surfaces. Thereby, it can prevent that frost adheres to the heat exchanger 13 and the air blower 14 which are arrange | positioned in the frozen space 12. FIG. As a result, the fall or stop of the function of the heat exchanger 13 or the air blower 14 can be further prevented.

Furthermore, when the cover 31 has an insulating property, electric charges can be confined inside the cover 31 to form a strong electric field. Thereby, in the situation which has various unstable elements, a large amount of food-and-drink XA1 can be collectively frozen more accurately, keeping freshness.

And when food / beverage XA1 is accommodated in the member (illustration omitted) which has electroconductivity and air permeability, the heat transfer to food / beverage XA1 by the convection in the frozen space 12 can further be reduced. .

Moreover, the several food-and-drink XA1 can be collectively arrange | positioned in the freezer 10 only by carrying the conveyance apparatus 15 by which the several food-and-drink XA1 was arrange | positioned in the freezer 10. That is, it is not necessary to arrange the plurality of foods and drinks XA1 on the transport device 15 one by one in the freezer 10. And the several food-and-drink XA1 can be collectively taken out from the freezer 10 only by carrying out the conveying apparatus 15 by which the several food-and-drink XA1 was arrange | positioned from the freezer 10. FIG. That is, it is not necessary to take out the plurality of foods and drinks XA1 from the transport device 15 one by one in the freezer 10.

Thus, it is possible to eliminate the work in the freezing space 12 where there is a risk of electric shock, and it is safe. Moreover, the time for opening the frozen space 12 can be shortened. As a result, the influence of outside air can be reduced, and the inside of the frozen space 12 can be maintained in a constant state. As a result, the inside of the frozen space 12 can be kept in an ideal state. That is, a large amount of food and drink can be frozen while maintaining freshness. And generation | occurrence | production of the frost resulting from inflow of external air can be prevented. Thereby, the fall or stop of the function of the heat exchanger 13 and the air blower 14 which are arrange | positioned in the frozen space 12 can be prevented.

In addition, the food and drink XA1 can be frozen in the frozen space 12, and the food and drink XA1 frozen in the frozen space 12 can be stored in the frozen storage 11 in a frozen state. That is, the function of storing the frozen food and drink XA1 in the frozen state can be transferred from the frozen space 12 to the frozen storage 11 having relatively low initial cost and running cost. Thereby, after freezing a large amount of food and drink XA1 while maintaining freshness, it can be stored at a low cost in a frozen state.

Further, the control device 22 refers to each of the alternating current value and the direct current value supplied to the power supply terminal, or each of the alternating voltage value and the direct current voltage value, and the alternating current applied to the food / drink XA1 by the power supply device 16. Since the voltage value and the direct-current voltage value are controlled, various uncertain factors (types of food and drink XA1, variation in quality of each individual, size for each individual, total amount, arrangement, food and drink XA1 and transport device 15 Each of the AC voltage and the DC voltage was stabilized in a situation having a contact state, a position of the transport device 15, a connection state of the clip-shaped power supply terminal 30, a temperature in the freezing space 12, a humidity, a wind contact condition, etc. An accurate value can be applied. By applying a stable and accurate value, the electric charge charged to the food and drink XA1 is stabilized, and cell destruction and oxidation are prevented. Thereby, it can suppress that variation arises in the frozen state. And reproducibility can be improved and the freshness of food-and-drink XA1 can fully be maintained.

Further, since the control device 22 refers to the frequency of the alternating current and controls the frequency of the alternating current or the frequency of the alternating voltage, each of the alternating voltage and the direct current voltage under the situation having various uncertainties is determined. It can be applied with a more stable and accurate value. Thereby, it can further suppress that variation arises in the frozen state. And reproducibility can be improved further and the freshness of food-and-drink XA1 can be kept more fully.

Furthermore, since the control device 22 controls the DC voltage value so that the negative DC voltage is obtained and the absolute value of the DC voltage is larger than the maximum value of the AC voltage, the food / drink XA1 is apt. Freezes like sherbet without freezing. For this reason, it can be easily cut with a kitchen knife without thawing and is easy to cook and process. And since it can be easily chewed with teeth, it can be used as it is. Moreover, once frozen food and drink XA1, it can be transported and stored in a general frozen storage (for example, frozen storage 11). Even in this case, it is not oxidized and dried, and the taste, texture, fragrance, and color are maintained for one year or longer as they are before freezing. Thereby, food and drink XA1 can be stably supplied in terms of quantity, quality, and price. And food and drink XA1 can be supplied beyond a season and can give a high-class feeling and special feeling.

By the way, when the food / drink XA1 is in a state in which the water of the food / drink XA1 cannot be released (for example, in a sealed state), the water to be released during cooling stays in the outer portion of the food / drink XA1. In this case, the outer portion of the food / drink XA1 is frozen in a state of excessive moisture compared to the inner portion, and depending on the type of food / drink, the frozen quality is poor. And when such food and drink are thawed, the quality is further deteriorated, for example, the outer portion becomes watery. For example, in comparison with leaves such as spinach, stuffed foods such as radishes and apples have a large amount of moisture and are likely to deteriorate in quality. On the other hand, according to the said invention, it becomes possible to freeze the water | moisture content of the outer part and inner part in food / beverage uniformly, As a result, it becomes possible to prevent deterioration of the quality at the time of thawing | decompression.

Second Embodiment Next, the configuration of the refrigeration facility 2 according to the second embodiment will be described with reference to FIG. FIG. 6 is a top view schematically showing the refrigeration facility 2.

In addition, only the characteristic part of the refrigeration equipment 2 according to the second embodiment will be described, and description of the same configuration, operation, and effect as in the first embodiment will be omitted as appropriate.

The refrigeration equipment 2 shown in FIG. 6 is a tunnel type system that sequentially freezes the food and drink XA1. Specifically, the refrigeration facility 2 includes a freezer 40 and a freezer storage 41.

The freezer 40 includes a freezing space 42, a heat exchanger (not shown), a blower (not shown), a dehumidifying mechanism (not shown), a cover (not shown), a transport device 43, a power terminal 53, A power supply device 44, a control device 54, and a rail 45 that enables the transport device 43 to be carried in and out of the refrigeration space 42 are provided.

The freezing space 42 includes a floor surface 46, a side surface 47, and a ceiling surface (not shown) as space forming surfaces. On the side surface 47, a carry-in port 48 for carrying in the carrying device 43 and a carry-out port 49 for carrying out the carry device 43 are formed. The carry-in port 48 is openable and closable with a door 50 attached thereto. The carry-out port 49 is openable and closable with a door 51 attached thereto.

The transport device 43 can be manually operated. Moreover, the conveyance apparatus 43 is self-propelled and can be automatically driven based on a radio signal from a controller (not shown). The transport device 43 includes a shelf 24, a plurality of trays 25, and a plurality of sliders 52 that allow the shelf 24 to be carried in and out of the refrigeration space 42.

Each of the plurality of sliders 52 has a roller (not shown) made of an insulator such as rubber. The plurality of sliders 52 are attached below the shelf 24, and the rollers roll along the rails 45. That is, the plurality of sliders 52 function as a moving unit that enables the transport device 43 to be carried into and out of the refrigeration space 42. In addition, the plurality of sliders 52 insulate the conveying device 43 from the floor surface 46 and allow charging of the food XA1 disposed on the tray 25.

The power supply terminal 53 has a long shape and is fixed to the side surface 47 along the direction from the carry-in port 48 to the carry-out port 49. The power supply terminal 53 is connected to the power supply device 44 via a cable (not shown) and a control device 54. The power terminal 53 contacts the side of the transport device 43 that travels in the freezing space 42. That is, the power supply terminal 53 enables connection / release switching with respect to the transport device 43.

The rail 45 is coated with an insulator such as resin (not shown). The rail 45 is laid in an annular shape. Specifically, the rail 45 penetrates the freezing space 42 of the freezer 40 via the carry-in port 48 and the carry-out port 49, and the freezing space of the freezer storage 41 through the carry-in port and the carry-out port (both not shown). 55 is laid so as to penetrate through. That is, the rail 45 functions as a moving unit that allows the transport device 43 to be carried in and out of the freezing space 42 together with the plurality of sliders 52. Moreover, the rail 45 insulates the conveyance apparatus 43 from the floor surface 46, and enables the food / beverage XA1 disposed on the tray 25 to be charged.

The freezer storage 41 includes a freezing space 55, a heat exchanger (not shown), and a blower (not shown).

In addition, the structure of the freezing space 55, the heat exchanger, and the air blower provided in the freezer storage 41 is the same as the structure of the freezing space 42, the heat exchanger, and the air blower provided in the freezer 40, and the description thereof is omitted.

Next, the freezing operation of the food / drink XA1 in the refrigeration facility 2 will be described.

First, a plurality of foods and drinks XA1 are placed on the tray 25 of the transport device 43 outside the frozen space 42. And the door 50 by the side of the carrying-in entrance 48 of the freezer 40 is opened, and the conveying apparatus 43 is carried in in the freezing space 42 below freezing point. As a result, the power terminal 53 is connected to the transport device 43. Further, the door 50 on the carry-in port 48 side is closed, and the food and drink XA1 is confined in the frozen space 42. Furthermore, the AC voltage and the DC voltage are simultaneously applied to the food / drink XA1 to perform freezing by the new technology.

After that, the application of the AC voltage and the DC voltage is stopped, the electric charge charged in the food and drink XA1 is released, and then the door 51 on the carry-out port 49 side of the freezer 40 is opened. Then, the transfer device 43 is carried out of the freezing space 42. Moreover, the door 51 by the side of the carrying-out exit 49 is closed, and it respond | corresponds to freezing of the subsequent food-drinks XA1.

Also, the door (reference numeral omitted) on the carry-in side of the freezer storage 41 is opened, and the transfer device 43 is carried into the freezing space 55 below freezing point. Further, the door on the carry-in side is closed, and the food and drink XA1 in the frozen space 55 is confined. Thereby, the food and drink XA1 frozen in the freezer 40 is stored in a frozen state.

After that, when the stored frozen food XA1 is shipped, the door (reference number omitted) on the outlet side of the frozen storage 41 is opened, and the transfer device 43 is carried out of the frozen space 55.

Thus, according to the refrigeration facility 2, the flow in the refrigeration space 42 can be in one direction from the carry-in port 48 to the carry-out port 49. Thereby, the conveyance apparatus 43 which has arrange | positioned food-and-drink XA1 can be sequentially carried out from the frozen space 42, carrying in to the frozen space 42 the conveyance apparatus 43 which arrange | positioned the food and drink XA1 sequentially. As a result, a larger amount of food and drink XA1 can be handled.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and technical idea thereof.

That is, in each of the above embodiments, the position, size, shape, material, orientation, quantity, and the like of each component can be changed as appropriate. For example, the number of trays 25 is not limited to the number shown.

That is, in the first embodiment, the food and drink XA1 frozen in the freezer 10 may be stored in the freezer 10 as it is. That is, the refrigeration equipment 1 may not include the frozen storage 11.

Alternatively, the constituent elements of the above embodiments may be applied to other embodiments as far as possible.

1, 2

Refrigeration equipment

11, 41

Refrigerated storage

12, 42

Refrigeration space

15, 43 Conveying device (placement means)
17, 46 Floor (space forming surface)
18, 47 Side (space forming surface)
19 Ceiling (space forming surface)
24 shelves 25 trays 27 couplers (coupling means)
28 Tire (moving means, insulator)
29 Dehumidifying mechanism 29a Housing 30, 53 Power supply terminal 31 Cover 45 Rail (moving means, insulator)
48 carry-in port 49 carry-out port 52 slider (moving means, insulator)
XA1 Food and drink

Claims

A freezing space below freezing that can be opened and closed,
Conductive arrangement means arranged in the frozen space and where food and drink are arranged;
An insulator that insulates the arrangement means from a space forming surface forming the frozen space;
A power supply terminal connected to the arrangement means;
A power supply device for applying a voltage to the food and drink via the power supply terminal;
A housing through which air in the frozen space passes, and a dehumidifying mechanism for dehumidifying the air by applying a voltage in the housing,
Maintaining the food and drink in a supercooled state by applying a voltage to the food and drink in the closed frozen space;
Refrigeration equipment.
It has air permeability and windproof property, and is provided with a cover that covers the arrangement means in a state insulated from the arrangement means.
The refrigeration equipment according to claim 1.
The cover is conductive, characterized in that
The refrigeration equipment according to claim 2.
The cover has an insulating property,
The refrigeration equipment according to claim 2.
The food and drink is contained in a member having conductivity and air permeability,
The refrigeration equipment according to any one of claims 1 to 4.
A freezing space below freezing that can be opened and closed,
Conductive arrangement means arranged in the frozen space and where food and drink are arranged;
A cover having air permeability and windproof property and covering the arrangement means in an insulated state from the arrangement means;
An insulator that insulates the arrangement means from a space forming surface forming the frozen space;
A power supply terminal connected to the arrangement means;
A power supply device for applying a voltage to the food and drink via the power supply terminal,
Maintaining the food and drink in a supercooled state by applying a voltage to the food and drink in the closed frozen space;
Refrigeration equipment.
The cover is conductive, characterized in that
The refrigeration equipment according to claim 6.
The cover has an insulating property,
The refrigeration equipment according to claim 6.
A freezing space below freezing that can be opened and closed,
Conductive placement means for placing food and drink contained in a member having electrical conductivity and air permeability, disposed in the frozen space;
An insulator that insulates the arrangement means from a space forming surface forming the frozen space;
A power supply terminal connected to the arrangement means;
A power supply device for applying a voltage to the food and drink via the power supply terminal,
Maintaining the food and drink in a supercooled state by applying a voltage to the food and drink in the closed frozen space;
Refrigeration equipment.
It is characterized by comprising moving means that allows the placing means to be carried in and out of the frozen space.
The refrigeration equipment according to any one of claims 1 to 9.
The frozen space includes a carry-in port of the placement unit and a carry-out port of the placement unit different from the carry-in port,
In the process in which the arrangement means moves from the carry-in port to the carry-out port, the food or drink is maintained in a supercooled state.
The refrigeration equipment according to claim 10.
The moving means also serves as the insulator,
The refrigeration equipment according to claim 10 or 11.
The power supply terminal is capable of switching connection / opening with respect to the arrangement means.
The refrigeration equipment according to any one of claims 1 to 12.
The arrangement means includes
A plurality of conductive trays;
The plurality of trays are provided with conductive shelves that are spaced apart from each other in the vertical direction.
The refrigeration equipment according to any one of claims 1 to 13.
A plurality of the arrangement means are provided,
The plurality of arranging means includes connecting means for connecting the shelves to each other,
The refrigeration equipment according to claim 14.
The food and drink frozen in the frozen space is provided with a freezing storage space below freezing point for storing and storing the food and drink in a state of being placed in the placement means.
The refrigeration equipment according to any one of claims 1 to 15.
With reference to each of the AC current value and DC current value supplied to the power supply terminal, or each of the AC voltage value and DC voltage value, the AC voltage value and the DC applied to the food by the power supply device A control device for controlling the voltage value;
The power supply device applies an AC voltage and a DC voltage to the food and drink at the same time by flowing a current obtained by superimposing alternating current and direct current on the food and drink through the power supply terminal.
In the process of lowering the temperature of the food and drink in a zone below freezing point, the control device controls the direct current value supplied to the power supply terminal to gradually decrease,
The refrigeration equipment according to any one of claims 1 to 16.
A freezing space below freezing point,
A refrigerator that cools the freezing space to bring the freezing space below freezing;
Conductive placement means disposed in the frozen space and on which food and drink are placed;
An insulator that insulates the placement means from a space forming surface that forms the frozen space;
A power supply terminal connected to the placing means,
A power supply device that simultaneously applies an AC voltage and a DC voltage to the food and drink via the power supply terminal;
With reference to each of the AC current value and DC current value supplied to the power supply terminal, or each of the AC voltage value and DC voltage value, the AC voltage value and the DC applied to the food by the power supply device A control device for controlling the voltage value,
The food or drink is in a supercooled state,
Refrigeration equipment.
The power supply device applies an AC voltage and a DC voltage to the food and drink at the same time by flowing a current obtained by superimposing alternating current and direct current on the food and drink through the power supply terminal.
In the process in which the refrigerator lowers the temperature of the freezing space in a band below freezing point, the control device controls the direct current value supplied to the power supply terminal to gradually decrease, thereby allowing the food and drink Characterized by maintaining the object in a supercooled state,
The refrigeration equipment according to claim 18.
In the process in which the water in the food and drink is in a state where it can be discharged out of the food and drink or into the frozen space, and the refrigerator lowers the temperature of the frozen space in a zone below the freezing point, the control The apparatus performs constant voltage control on the AC voltage and the DC voltage so as to gradually decrease a DC current value supplied to the power supply terminal, and maintains the food or drink in a supercooled state. ,
The refrigeration equipment according to claim 18 or 19.
A frozen food or drink is produced using the refrigeration equipment according to any one of claims 1 to 20.
A method for producing frozen food and drink.
A dehumidifying mechanism for a refrigeration facility that dehumidifies air in a freezing space for freezing food and drink,
A housing through which air in the frozen space passes;
A voltage application mechanism for applying a voltage in the housing;
Dehumidification mechanism for refrigeration equipment.