CN116322359A - Refrigerating storage and electric field forming method thereof - Google Patents
Refrigerating storage and electric field forming method thereof Download PDFInfo
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Abstract
The object of the present invention is to provide a refrigerating storage and electrode driving method thereof capable of simultaneously suppressing the frequency of switching connection of electric fields formed in sequence and stabilizing a non-frozen state in a relatively large refrigerating storage. A refrigerator having a planar electrode member for forming an electric field in a storage, comprising: a plurality of planar electrode members (201) arranged at respective preset positions on a wall surface in the library; providing a high voltage power supply (401) for forming a high voltage of an electric field to each planar electrode member; a plurality of high voltage connection switches (402) selectively connecting the high voltage power supply and the plurality of planar electrode members; and a connection control unit (403) capable of setting the duration of each of the plurality of high-voltage connection switches to be in a closed state, and controlling the opening and closing of the high-voltage connection switch corresponding to at least a part of the plurality of planar electrode members in accordance with the set duration.
Description
Technical Field
The present invention relates to a refrigerated storage container for preserving foods and the like in an electric field and maintaining freshness for a long period of time, and more particularly to a method for forming an electric field in a refrigerated storage container.
Background
If the food is stored in the electric field space formed in the refrigerator, molecules of the food vibrate due to the electric field, and the non-frozen state can be maintained even when the temperature in the refrigerator is lowered to a level of several degrees below the freezing point. A number of proposals have been made to date to use this phenomenon to maintain freshness of foods for a long period of time (patent documents 1, 2, and 3).
In particular, patent document 3 discloses a device structure in which a plurality of counter electrodes are provided in a relatively large-sized refrigerating storage compartment, and electric connection between one voltage generating device and the plurality of counter electrodes is sequentially switched by a changeover switch. According to patent document 3, even if the relatively large-sized refrigerating banks are provided by sequentially switching the electrical connection by the switch at intervals of several seconds, for example, it becomes unnecessary to provide a plurality of voltage generating devices, and the reduction of power consumption can be achieved.
Japanese patent application laid-open No. 2001-215074
Japanese patent application laid-open No. 3862085 (patent document 2)
Japanese patent application laid-open No. 2020-106152
Disclosure of Invention
In order to form an electric field space in the refrigerator, a high voltage of 2500V to 7000V, for example, is applied to the electrodes in the refrigerator. For this reason, the switch for the refrigeration storage disclosed in patent document 3 needs to have a specification that can withstand the operation of sequentially switching the high voltage at intervals of several seconds. For such a change-over switch, an electromagnetic relay composed of a material which is highly insulated, has a low contact resistance at the contact point, and has a long service life is generally used.
However, since such relay is generally expensive, it is desirable to use it as long as possible, but as in patent document 3, switching operation at intervals of several seconds frequently causes contact opening and closing of the relay, and thus a sufficiently long service life cannot be achieved.
In addition, if the object in the storage is to be maintained in a non-frozen state, it is necessary to form an electric field in a space in which the object is to be placed at a certain period, even if the object is not to be maintained for a long period of time, and the duration of the electric field, the period of time of formation of the electric field, and the like are important parameters for maintaining the non-frozen state. Patent documents 1 to 3 do not provide a method for maintaining a stable non-frozen state for the duration of an electric field concerning intermittent electric field formation and for the lack of cognition of the period of electric field formation.
Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a refrigerating storage and an electrode driving method thereof, which can simultaneously suppress the frequency of switching connection and stabilization of a non-frozen state by sequentially forming an electric field in a relatively large refrigerating storage.
In order to achieve the above object, according to one embodiment of the present invention, a refrigeration repository includes: a refrigerating storage bank for forming a plane electrode part of an electric field in the storage, and having a plurality of plane electrode parts with a wall surface arranged at each preset position in the storage; providing a high-voltage power supply for forming a high voltage of the electric field to each of the planar electrode members; a plurality of high-voltage connection switches for selectively connecting the high-voltage power supply and the plurality of planar electrode members; and a connection control unit capable of setting a duration for which each of the plurality of high-voltage connection switches is in a closed state, and controlling the opening/closing of the high-voltage connection switch corresponding to at least a part of the plurality of planar electrode members in accordance with the set duration.
Since the duration of the high voltage applied to the plurality of planar electrode members to form the electric field in the storage can be set, the refrigerating target in the storage can be prevented from freezing and the number of times of opening and closing the high voltage connection switch can be suppressed. This makes it possible to simultaneously suppress the frequency of switching connection of electric fields formed in order and stabilize a non-frozen state in a relatively large-sized refrigerating bank.
According to an embodiment of the present invention, the connection control unit further selects all or a part of the plurality of planar electrode members, and controls the opening and closing of the plurality of voltage connection switches according to the set duration for the selected planar electrode member. Since the high voltage can be selectively applied to all, or a portion of the plurality of planar electrode members in conformity with the duration, an electric field can be formed in a space of a preset position within the library.
According to an embodiment of the present invention, the connection control unit may sequentially apply high voltages to the plurality of planar electrode members for each of the durations in a predetermined order to control the plurality of high voltage connection switches. By setting the duration time, the refrigerating target objects in the warehouse can not be frozen and the opening and closing times of the high-voltage connecting switch can be restrained.
In order to achieve the above object, according to an embodiment of the present invention, a method for forming an electric field in a refrigeration storage according to the present invention is characterized in that the method for forming an electric field in a refrigeration storage includes a planar electrode member for forming an electric field in the storage, and the refrigeration storage includes: a plurality of planar electrode members arranged at predetermined positions on a wall surface in the library; providing a high-voltage power supply for forming a high voltage of the electric field for each of the planar electrode members; a plurality of high-voltage connection switches for selectively connecting the high-voltage power supply and the plurality of planar electrode members; and a connection control unit for controlling the opening and closing of the plurality of high voltage connection switches; the opening/closing of the high-voltage connection switch corresponding to at least a part of the plurality of planar electrode members is controlled in accordance with a predetermined duration to form a desired electric field in the library by the planar electrode members.
A high voltage for forming an electric field within the library may be sequentially applied to the plurality of planar electrode members in compliance with the set duration; the refrigerating objects in the warehouse can not be frozen and the opening and closing times of the high-voltage connecting switch can be restrained; in a relatively large refrigerating bank, frequency suppression of connection switching of electric fields formed in sequence and stabilization of a non-frozen state can be achieved at the same time.
As described above, according to the present invention, it is possible to provide a relatively large-sized refrigeration storage capable of simultaneously suppressing the frequency of switching connection of electric fields formed in sequence and stabilizing the refrigeration storage in a non-frozen state.
Drawings
Fig. 1 is a block diagram schematically showing a circuit configuration of a refrigeration storage according to an embodiment of the present invention.
Fig. 2 is a diagram showing a modeling of the composition of the high-voltage panel and the high-voltage connection switch in the present embodiment.
Fig. 3 is a block diagram schematically showing the circuit configuration of a refrigeration storage according to the first embodiment of the present invention.
Fig. 4 is a block diagram schematically showing the circuit configuration of a refrigeration storage according to a second embodiment of the present invention.
Fig. 5 is a diagram showing a driving example of a high voltage panel array of a refrigeration storage according to a second embodiment of the present invention.
Fig. 6 is a diagram illustrating an example of a configuration of a high voltage panel array of a refrigeration bank according to a third embodiment of the present invention.
Fig. 7 is an oblique view showing one embodiment of the appearance of the high-voltage panel used in the present invention.
Fig. 8A is a front view, fig. 8B is a sectional view taken along line I-I, and fig. 8C is a rear view of the high-voltage panel illustrated in fig. 7.
Fig. 9A is a front view of a planar electrode member in the high-voltage panel illustrated in fig. 7, and fig. 9B is a sectional view taken along line II-II.
Fig. 10 is a modeling cross-sectional view illustrating the composition of the high-voltage panel illustrated in fig. 7.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the constituent elements described in the following embodiments are merely examples, and the shapes, dimensions, proportions thereof, and the like of the constituent elements are matters for explaining the present invention, and are not intended to limit the technical scope of the present invention to only these matters.
1. Description of the embodiments
In fig. 1, the refrigeration storage 300 is constituted by a case, and a plurality of high-voltage panels P are arranged in an arbitrary pattern only in a required number of sheets and a required range on one inner wall surface thereof. The case 301 is an object formed of a conductor having a rectangular parallelepiped shape with a length La, a width Lb, and a height H. In the present embodiment, for simplicity of explanation, m×n sheets of high-voltage panel P 11 ～P mn Is arranged to form a high voltage panel array 100. It should be noted that the number of sheets and arrangement of the high-voltage panels P are arbitrary, and which high-voltage panel P is positioned in the case 301 may be determined in advance, and the present invention is not limited to the matrix shape.
Although details will be described later, 2 planar electrode members 201a and 201b are provided on each high-voltage panel P, and a high voltage is applied individually or in common to each of them, and the case 301 is grounded. Hereinafter, the case where the planar electrode members 201a and 201b are not distinguished will be referred to as "planar electrode member 201". The composition of the high-voltage panel P is not limited to the present embodiment, and 1 planar electrode member 201 may be provided on each high-voltage panel P.
The high voltage power supply 401 is connected to the high voltage connection switch 402 via a high voltage connection, and the high voltage connection switch 402 can switch the connection between the high voltage power supply 401 and each planar electrode member 201 to a desired length and a desired pattern in accordance with the control of the connection control unit 403. Although details will be described later, the high voltage connection switch 402 may apply a high voltage (for example, 2500 to 7000V) to the planar electrode 201 of the high voltage panel P provided at an arbitrary position. By disposing food or the like in the electric field E, the space in front of the planar electrode member 201 to which the high voltage is applied is formed with a predetermined electric field E, and as described above, the temperature of the refrigerating compartment can be reduced to a few degrees below the freezing point, and the freshness of the food can be maintained over a long period of time.
As shown in fig. 2, the refrigerating storage 300 includes: bottom surface 302, side wall surface 303, and top surface 304, high-voltage panel P 11 ～P mn Is disposed on the top surface 304. In the high-voltage panel P ij (iAny two planar electrode members 201a and 201b of =1 to m, j=1 to n) are connected to the high-voltage power supply 401 by high-voltage terminals through connection units 404 and 405, and switches SW1 and SW2 of the high-voltage connection switch 402, respectively. The connection control unit 403 performs ON (ON) -OFF (OFF) control of the switches SW1 and SW2 of the high voltage connection switch 402 in conformity with a preset pattern. That is, only the planar electrode member 201a is applied with a high voltage when only the switch SW1 of the high voltage connection switch 402 is closed, only the planar electrode member 201b is applied with a high voltage when only the switch SW2 is closed, and both the planar electrode members 201a and 201b are applied with a high voltage when both the switches SW1 and SW2 are closed. In addition, in the connection unit 405, the two planar electrode members 201a and 201b of each high voltage panel P may be electrically connected to form one planar electrode member. The same applies to other high voltage panels.
2. Examples
2.1 First embodiment)
Hereinafter, 6 high voltage panels P are arranged on the top surface 304 of one inner wall surface of the case 301 and constitute the high voltage panel array 100. As described above, although 2 planar electrode members 201a and 201b are provided on each high-voltage panel P, here, 2 planar electrode members 201a and 201b are connected, and each high-voltage panel P forms 1 planar electrode member 201. As described above, the planar electrode members 201 of the 6-piece high-voltage panel P can be individually selected by the switch using the electromagnetic relay. In addition, 2 planar electrode members of each high voltage panel P may be selected by a switch using an electromagnetic relay.
As shown in fig. 3, the high voltage connection switch 402 is provided with electromagnetic relays RL corresponding to 6 high voltage panels P, respectively 1 ～RL 6 . Electromagnetic relay RL 1 ～RL 6 The common terminals of the connecting units 404 are connected to the corresponding terminals of the connecting units 404, and the connecting units 404 are detachably connected to the connecting units 405 on the high voltage panel P side. If the connection units 404 and 405 are linked, then the electromagnetic relay RL 1 ～RL 6 The common terminals of the corresponding high voltage panel P are connected to the planar electrode member 201 through the connection units 404 and 405, respectively. Electromagnetic relay RL 1 ～RL 6 Commonly connected to the high voltage power supply 401. That is, as shown in FIG. 3, 6 high voltage panels P, and electromagnetic relay RL corresponding to each high voltage panel P 1 ～RL 6 The high voltage power supply 401 is connected in parallel. As described above, for example, by applying a current (exciting) to the coil terminal of the electromagnetic relay RL1, the contact is closed (closed state), and a high voltage is applied from the high voltage power supply 401 to the planar electrode member 201 of the corresponding high voltage panel P. With respect to other relay RL 2 ～RL 6 The same applies. Hereinafter, the state in which the contact of the relay is closed will be referred to as an ON (closed) state and the open state will be referred to as an OFF (open) state. Each relay RL of the high-voltage connection switch 402 is controlled by the connection control unit 403 ON-OFF.
The connection control unit 403 has: electromagnetic relay RL for controlling high voltage connection switch 402 1 ～RL 6 A switch control unit 410 of the ON-OFF sequence of (C); and a length of a duration of an ON state for relay (a closing duration T) ON ) And an ON timer 411 whose period (T) is arbitrarily set. The connection control unit 403 having such a function can be realized by running a program on a processor of a computer.
If it is the electromagnetic relay RL according to the present embodiment 1 ～RL 6 May be sequentially selected in a preset order. Electromagnetic relay RL 1 ～RL 6 At each T ON Sequentially excited in time to the electromagnetic relay RL 6 After ending, return to the original electromagnetic relay RL 1 The planar electrode members 201 of the 6 high-voltage panels P are sequentially energized in the same order, and then high voltages are sequentially applied in the same order.
T of relay excitation continuous ON state ON The time and the period (period T) from the time when each relay is turned ON to the next time are set by the ON timer 411. But in this embodiment t=6×t ON 。T ON The time is a length of time during which a high voltage is applied to the planar electrode member 201 and thereby an electric field is formed in the environment of the object. T (T) ON The time can be set to be by repeatedly forming the electric field refrigerating storage library in the period T300, the number of times of opening and closing the contacts of the relay is reduced as much as possible. If T ON If the time is too long, the object in the electric power field will not freeze, and the possibility of freezing the object will be high. Conversely, if T ON If the time is too short, the ON-OFF operation of the contacts of the relay becomes frequent, and the lifetime of the relay becomes short. In addition, if T ON If the time is short, all objects in the electric field have the possibility of freezing because of the short time. In this way, depending on the size, freezing capacity, etc. of the refrigerating compartment 300, there is an optimum T for preventing freezing of the objects in the compartment and prolonging the life of the electromagnetic relay ON Time. The ON timer 411 can be used to set the most appropriate T ON Time. As one example, where the bin 301 of the cold storage repository 300 is a 20 feet standard bin (20-ft container), one may use T as a base ON The time was set to about 3 minutes to maintain the most appropriate non-frozen state.
In the above example, the high voltage is applied to each of the high voltage panels P having 2 planar electrode members 201 to control the high voltage connection switch 402, but the present invention is not limited to this embodiment, and for example, the 2 planar electrode members 201a and 201b of the high voltage panel P may be individually controlled, and in this case, the high voltage may be sequentially applied to the 2×6 planar electrode members 201 one by one. The electromagnetic relay RL corresponding to the switch control unit 410 may be sequentially excited by using 2 high-voltage panels (that is, 4 planar electrode members) as one unit, or by using a larger number of planar electrode members as one unit. In addition to the method of sequentially applying the high voltage panel P in a predetermined order or the planar electrode members 201, a method of randomly applying the high voltage panel P may be employed. In addition, the plurality of relay-relays RL are connected in parallel to the high-voltage power supply 401, and the closing duration T can be arbitrarily set ON And a period T, so that all the electromagnetic relays RL are not excited for a time (interval) to sequentially or randomly excite the electromagnetic relays RL to set the closing duration T ON To (1)And a period T. By setting interval, the closing duration T of a plurality of relay RL can be reduced ON The position of the panel P connected to each relay RL and the period T are set to be optimal, and the power consumption can be suppressed. In addition, the time (repetition time) for simultaneously exciting 2 or more electromagnetic relays selected from the plurality of electromagnetic relays RL may be mixed, and each electromagnetic relay RL may be sequentially or randomly excited to set the closing duration T ON And a period T. By setting the repetition time, the closing duration T of the plurality of relays RL can be set corresponding to the position of the panel P connected to each relay RL ON And the period T is set to be most appropriate.
2.2 Second embodiment)
In the first and second embodiments described above, all of the high-voltage panels or the planar electrode members 201 are sequentially selected and applied with high voltages, but the present invention is not limited to these embodiments, and only the desired partial areas of the high-voltage panel array 100 or all of the planar electrode members 201 may be selected and an electric field may be locally formed in the library. That is, the planar electrode member 201 of the partial region of the high voltage panel array 100 may also be sequentially selected as in the first embodiment described above.
As shown in fig. 4, the high-voltage panel array 100, the high-voltage power supply 401, the high-voltage connection switch 402, and the connection units 404, 405 have the same composition as the first embodiment described above. In the above description, the same reference numerals are used for the components having the same functions, or the same reference numerals are used for the components, and detailed description thereof will be omitted.
The connection control unit 403a in the second embodiment has: a switch control unit 410a that selects a planar electrode part of which region of the high voltage panel array 100 and controls whether a high voltage is applied; and a length (T) of ON time for applying a high voltage to the planar electrode member 201 is arbitrarily set ON ) And an ON timer 411 of period (T). The connection control unit 403a having such a function may be realized by running a program on a processor of a computer.
In the example illustrated in fig. 4, a partial array 100a is selected among the high voltage panel arrays 100. The switch control unit 410a sequentially applies a high voltage to the planar electrode member 201 of the selected partial array 100a to control the electromagnetic relay corresponding to the high voltage connection switch 402, thereby sequentially applying a high voltage from the high voltage power source 401 to the planar electrode member 201 of the partial array 100 a.
Length T of time for applying high voltage to each planar electrode member 201 of partial array 100a ON As in the first embodiment, the length of the target object, which is the target object in the refrigeration storage 300, is set to be a length of time in which the number of times of opening and closing the contact of the relay is reduced as much as possible, by the repeated electric field formation. As described above, there is an optimum T depending on the size of the space in which the target object is mounted in the refrigeration storage 300, the freezing capacity, and the like ON Time, and the optimal solution may be set by an ON timer.
In addition, the high voltage may be one unit instead of the high voltage panel P, and one planar electrode member 201 may be one unit. Alternatively, 2 high-voltage panels (that is, 4 planar electrode members) may be used as one unit, or the number of planar electrode members may be used as one unit.
As shown in fig. 5, if only a part of the high voltage panel arrays 100a disposed on the top surface 304 of the refrigeration storage 300 are selected according to the second embodiment of the present invention as described above. Thereby, it is possible to sequentially apply a high voltage to only the plurality of planar electrode members 201 constituting the partial array 100a as described above, and place the refrigerating target M in the electric field space thus formed to prevent freezing.
2.3 Third embodiment
In the first and second embodiments described above, the high-voltage panel P is disposed on one inner wall surface of the refrigeration storage 300, but the present invention is not limited to this embodiment, and may be disposed on a plurality of inner wall surfaces. A third embodiment in which the high-voltage panel P is provided on the plurality of side wall surfaces 303 of the refrigeration storage 300 will be described below.
As shown in fig. 6, according to a refrigeration storage 300 of a third embodiment of the present invention, high voltage panel arrays 100a and 100b are provided on side wall surfaces 303a and 303b facing each other, respectively. Here, a high voltage is applied to each of the plurality of high voltage panels P of the high voltage panel array 100a or the planar electrode member 201, and the high voltage panel array 100b is commonly connected to the high voltage power source 401. The circuit configuration in which high voltages are sequentially applied to the high voltage panels P of the high voltage panel array 100a or the planar electrode member 201, that is, the high voltage connection switch 402, the connection control unit 403, and the high voltage power supply 401, is the same as the first embodiment and the second embodiment described above, and therefore, the description thereof is omitted.
The composition of disposing the high- voltage panel arrays 100a and 100b on the mutually facing side wall surfaces 303a and 303b of the refrigeration storage 300 in this manner is also applicable to the first and second embodiments of the present invention described above. The refrigerating bank 300 according to the present invention is not limited to the embodiment in which the high-voltage panel array 100 is provided on the top surface 304 or the side wall surface 303, but may be provided on the bottom surface 302.
2.4 Effects of (1)
As described above, according to the first to third embodiments of the present invention, a high voltage may be sequentially applied to all, or a portion of the planar electrode member 201 constituting the high voltage panel array 100. At this time, the length T of the high voltage application time is set by using the ON timer 411 ON To the optimum value, that is, the length of time for which the number of times of opening and closing the contact of the relay is reduced as much as possible can be set between the lengths of the target object, which is the target in the refrigerating storage 300, not to freeze by the repeated electric field. In this way, in a relatively large refrigeration storage, frequency suppression of switching connection of electric fields formed in sequence and stabilization of a non-frozen state can be achieved at the same time.
3. Examples of high pressure Panel
In the above-described embodiment, various forms of the high-voltage panel P may be used. Hereinafter, an example of the high-voltage panel P that can be used in the above-described embodiment will be described.
Radix if GinsengReferring to FIG. 7, a high voltage panel P used in the above-described embodiment ij Among the frame members 101 having the length L, the width W, and the thickness D, 2 planar electrode members 201a, 201b (hereinafter, appropriately collectively referred to as "planar electrode member 201") are fixed, and have a structure in which the front surface of the frame member 101 is covered with the protective film 102. It is needless to say that the composition shown in fig. 7 is one example, and the frame members having the length L1, the width W, and the thickness D may be used alone or two members may be connected as shown in the drawing. As one example, the length L is about 2m, the width W is about 1m, the thickness D is about 6cm, and the length L1 is 95 to 97cm. For example, if the refrigerated warehouse 300 used is a 20 feet standard case (20-ft container), the high voltage panel P ij For a length l=2035 mm, a width w=940 mm, and a thickness d=60 mm, a total of 8 such high-voltage panels can be used.
The front surface of the sheet in fig. 7 is the electric field forming side (or the front surface side), and the depth of the sheet is the wall surface side (or the inner side) of the refrigerating storage. Hereinafter, the high voltage panel P will be described ij Is a specific component of (a) a specific composition.
In fig. 8, a planar electrode member 201 is fixed to the inside of the frame of a frame member 101, and a heat insulating resin plate 202 is fixed to the surface side of the planar electrode member 201, and a protective film 102 covers the entire surface of the frame member 101. The frame member 101 is formed using, for example, fiber reinforced plastic (FRP, fiber Reinforced Plastics) or the like. The heat insulating resin plate 202 is formed of, for example, foamed polyurethane formed in a plate shape, and protects the planar electrode member 201 from the low-temperature environment of the refrigeration storage by virtue of its excellent heat insulating property. The thickness t1 of the heat insulating resin plate 202 may be any thickness as long as a predetermined heat insulating effect can be obtained, and foamed polyurethane is used here and is about 15 mm.
The protective film 102 is provided for protecting the planar electrode member 201 from water drops, dew condensation, cleaning using a sterilizing liquid, or the like from the refrigerating compartment, and is made of, for example, polycarbonate (PC) and has a thickness t2 of about 1mm. The planar electrode member 201 is fixed by an appropriate fixing means (self-tapping screw or the like) from the inner surface (wall surface) of the frame member 101 at a position parallel to the inner surface and distant from the predetermined distance d only. The preset distance d is about 45 to 55mm, where d=46 mm. The planar electrode member 201 is described in detail below.
In fig. 9, the planar electrode member 201 has a rectangular shape with a length L2 and a width W2, and is composed of a rectangular planar electrode 210 having a guide line 220 for applying a high voltage, and 2 rectangular resin plates 210a and 210b each having a long side divided by the planar electrode 210. Specifically, by crimping the planar electrode 210 around the center of the resin plates 210a and 210b, the planar electrode 210 is enclosed in the resin plates 210a and 210b with the guide wire 220 exposed, and the outer resin plate peripheral portion 211 is formed from the periphery of the planar electrode 210. In addition, as one example, the length L2 is 90 to 93cm, and the width W2 is about 90 cm.
By sealing the planar electrode 210 into the resin plate 210 so as not to be exposed to the outside, the planar electrode member 201 can be used and handled extremely easily. In addition, the resin coating is less likely to be affected by the external environment, and the reliability of the high-voltage panel is improved.
The resin plate outer periphery 211 is provided with a plurality of through holes 212, and the planar electrode member 201 is fixed to the frame member 101 by passing self-tapping screws 113 through the through holes 212. The resin plate outer periphery 211 for fixation can be formed simultaneously by simply sandwiching the planar electrode 210 between the resin plates 210a and 210b and crimping. The through-holes 212 may be formed simultaneously in this crimping process. Here, the through holes 212 are formed at four corners of the resin plate peripheral portion 211 and at the center of each side. The planar electrode 210 is desirably formed of a stainless steel mesh that is lightweight, mechanically durable, and chemically resistant. In this embodiment, the thickness of the planar electrode 201 is about 0.5mm. The thickness of the planar electrode portion 201 formed by crimping the planar electrode 210 between the resin plates 210a and 210b is, for example, about 3 mm. For example, ABS resin may be used for the resin plates 201a and 201b.
Next, an example of a method of attaching the planar electrode member 201 and the heat insulating resin sheet 202 to the frame member 101 will be described with reference to fig. 10.
As shown in fig. 10 by way of modeling, the rectangular inner opening surrounded by the inner wall 110 of the frame member 101 has an area that can accommodate the same rectangular planar electrode member 201. In addition, in the inner wall 110, an inner protruding portion 112 for fixing the planar electrode member 201 is formed at a position apart from the inner surface 111 of the frame member 101 by a distance d. The inner protruding portion 112 is provided over the entire circumference of the inner wall 110 of the frame member 101, and the rectangular front surface side opening is fitted with a heat insulating resin plate 202 as will be described later.
The planar electrode member 201 is mounted on the inner protruding portion 112 from the inside along the inner wall 110 of the frame member 101, passes through the through hole 212 of the resin plate outer peripheral portion 211, and is fixed to the inner protruding portion 112 by the self-tapping screw 113. This makes it possible to reliably fix the planar electrode member 201 at a position away from the inner surface 111 by the predetermined distance d. Since the planar electrode 210 is applied with a high voltage, the planar electrode 210 needs to be fixed without falling off. Although the planar electrode member 201 is simply, lightweight, and securely fixed by screwing the self-tapping screw 113 into the resin of the inner protruding portion 112, any fixing method that does not fall off and is secure may be used, for example, a bolt and a nut that penetrates the inner protruding portion 112 may be used.
In this way, if the planar electrode member 201 is fixed to the inner side of the frame member 101, the heat insulating resin sheet passing through the front side opening is placed on the upper surface thereof. The heat insulating resin plate 202 may be fixed by forming a recess in the inner protruding portion 112 of the frame member 101, for example, and fitting the recess therein. Finally, the entire surface of the frame member 101 including the upper surface of the heat insulating resin plate 202 is covered with the protective film 102.
As described above, the planar electrode member 201 can be easily and surely attached to the frame member 101 by constituting the high-voltage panel 10, and in addition, the insulating resin plate 202 and the protective film 102 can be protected from the low-temperature environment in the warehouse, the influence of the disinfectant at the time of cleaning, and the like. It is needless to say that the frame member 101, the protective film 102, the heat insulating resin plate 202, and the resin plates 210a and 210b are formed of an insulating material such as a synthetic resin.
As described above, the high voltage panel P ij The planar electrode member 201 and the heat insulating resin plate 202 are simply mounted in the frame member 101, and are extremely easy to manufacture as described above. In addition, because of the high voltage panel P ij Is light in weight, and thus the high-voltage panel P can be easily moved ij . Since only the high voltage panel P is to be used ij The planar electrode 210 can be easily disposed at a desired position by being disposed on one wall surface, and thus a desired electric field E can be easily formed in a desired space in the refrigerating compartment 300.
High voltage panel P ij The refrigerator 300 arranged on one wall is not limited to a refrigerator for food, and may be applied to any refrigerator that has a need to maintain freshness for a long period of time, including blood, organs, and microorganisms of animals other than food.
In addition, as already described, the high-voltage panel P used in the present embodiment is not limited to the composition of fig. 7 to 10. The flat electrode member 201 may be an aluminum flat plate provided with dew condensation preventing means as the high-voltage panel P, or may be an aluminum flat plate directly as the high-voltage panel.
[ possibility of industrial use ]
The present invention is a refrigerator, and can be used for forming an electric field in a relatively large-sized refrigerator storage such as a refrigerator.
Claims (4)
1. A refrigerated storage, characterized in that the refrigerated storage is a refrigerated storage having a planar electrode member for forming an electric field within the store, and in that the refrigerated storage comprises:
a plurality of planar electrode members, a wall surface in the library being arranged at each preset position;
a high voltage power supply for supplying a high voltage for forming the electric field to each of the planar electrode members;
a plurality of high voltage connection switches selectively connecting the high voltage power source and the plurality of planar electrode members; and
a connection control unit configured to set a duration for which each of the plurality of high-voltage connection switches is in a closed state, and to control the opening/closing of the high-voltage connection switch corresponding to at least a part of the plurality of planar electrode members in accordance with the set duration;
wherein the plurality of planar electrode members, and the high voltage connection switch connected to each of the planar electrode members are connected in parallel to the high voltage power supply;
the connection time is set to a length of time in which the number of times of opening and closing the high-voltage connection switch is reduced as much as possible, among lengths in which the target in the refrigerating storage is not frozen by the set periodic repeating electric field formation.
2. The refrigeration storage according to claim 1, wherein the connection control unit further selects all or a part of the plurality of planar electrode members, and controls the opening/closing of the plurality of high-voltage connection switches for the selected planar electrode members in conformity with the set duration.
3. The refrigeration storage according to claim 1 or 2, wherein said connection control unit sequentially applies high voltages to said plurality of planar electrode members for each of said durations in a preset sequence to control said plurality of high voltage connection switches.
4. A method of forming an electric field in a refrigerated storage container, the method comprising forming an electric field in a refrigerated storage container having a planar electrode member for forming an electric field in the container, the refrigerated storage container comprising:
a plurality of planar electrode members, a wall surface in the library being arranged at each preset position;
a high voltage power supply for supplying a high voltage for forming the electric field to each of the planar electrode members;
a plurality of high voltage connection switches selectively connecting the high voltage power source and the plurality of planar electrode members; and
a connection control unit for controlling the opening and closing of the plurality of high-voltage connection switches;
wherein the plurality of planar electrode members, and the high voltage connection switch connected to each of the planar electrode members are connected in parallel to the high voltage power supply;
the connection control unit can set the duration and the period of each of the plurality of high-voltage connection switches in a closed state;
wherein the connection time is set to a length of time in which the number of times of opening and closing the high-voltage connection switch is reduced as much as possible, among lengths in which the target in the refrigerating storage is not frozen by the set periodically repeating electric field formation;
wherein the connection control unit controls the opening and closing of the high-voltage connection switch corresponding to at least a part of the plurality of planar electrode members in accordance with the set duration and period to form a desired electric field in the library by the planar electrode members.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-127953 | 2021-08-04 | ||
| JP2021127953 | 2021-08-04 | ||
| PCT/JP2022/029962 WO2023013729A1 (en) | 2021-08-04 | 2022-08-04 | Refrigerated storage chamber and electric field formation method therefor |
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| Publication Number | Publication Date |
|---|---|
| CN116322359A true CN116322359A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202280005938.5A Pending CN116322359A (en) | 2021-08-04 | 2022-08-04 | Refrigerating storage and electric field forming method thereof |
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| CN (1) | CN116322359A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5531115U (en) * | 1978-08-16 | 1980-02-28 | ||
| KR101127183B1 (en) * | 2008-03-18 | 2012-03-21 | 엘지전자 주식회사 | Non-freezing chamber |
| US8804518B2 (en) | 2010-02-26 | 2014-08-12 | Qualcomm Incorporated | Quality of service (QoS) acquisition and provisioning within a wireless communications system |
| JP2013169194A (en) * | 2012-02-22 | 2013-09-02 | Yoshitaka Arii | Freshness retaining apparatus |
| JP6962571B2 (en) * | 2018-12-07 | 2021-11-05 | 株式会社O’s&Tec | Refrigerated storage |
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| JPWO2023013729A1 (en) | 2023-02-09 |
| JP7213605B1 (en) | 2023-01-27 |
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