WO2020121990A1 - Vitrine - Google Patents

Vitrine Download PDF

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Publication number
WO2020121990A1
WO2020121990A1 PCT/JP2019/047994 JP2019047994W WO2020121990A1 WO 2020121990 A1 WO2020121990 A1 WO 2020121990A1 JP 2019047994 W JP2019047994 W JP 2019047994W WO 2020121990 A1 WO2020121990 A1 WO 2020121990A1
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WO
WIPO (PCT)
Prior art keywords
ptc element
comb
shelf
power feeding
ptc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/047994
Other languages
English (en)
Japanese (ja)
Inventor
粕谷　潤一郎
拓馬 石橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanden Retail Systems Corp
Original Assignee
Sanden Retail Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanden Retail Systems Corp filed Critical Sanden Retail Systems Corp
Publication of WO2020121990A1 publication Critical patent/WO2020121990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor

Definitions

  • the present invention relates to a showcase that displays products such as canned drinks and drinks in PET bottles on a shelf and displays and sells these products while heating them.
  • the front row of products on the shelves is more difficult to heat because the front surface touches the air outside the display room and radiates heat, making it more likely that the front and one side will touch or radiate air outside the display room or air inside the display room.
  • the products in the left and right front corners are the most difficult to heat. Therefore, conventionally, the temperature of each part of the shelf must be separately controlled by a plurality of electric heaters and temperature sensors to avoid the variation in the temperature of the product (see, for example, Patent Document 1).
  • PTC heater planar heater
  • PTC element material having a positive temperature-resistance characteristic
  • the resistance value of the part where the temperature is locally low has been lowered, so the current will increase slightly even if the resistance value of other areas where the same current flows does not change (total resistance between the electrodes). Current flows according to the value). Therefore, the amount of heat generated in such a region is increased, and a region in which the temperature is unnecessarily increased is generated, resulting in an increase in power consumption.
  • the present invention has been made to solve the above-mentioned conventional technical problems, and an object of the present invention is to provide a showcase that can heat a product finely and uniformly by a PTC heater provided on a shelf. To do.
  • the showcase of the invention of claim 1 comprises a PTC heater provided on a shelf for displaying products, wherein the PTC heater comprises a PTC element (resistor) and at least a pair of power feeds for feeding power to the PTC element.
  • the width of the PTC element between the power feeding portions is set to be equal to or less than the width dimension of the product.
  • the showcase of the invention of claim 2 is characterized in that in the above invention, the width of the PTC element between the power feeding parts is set to 50 mm or less.
  • the showcase of the invention of claim 3 is characterized in that in each of the above inventions, the width of the PTC element between the power feeding parts is set to be half or less of the width dimension of the product.
  • the showcase of the invention of claim 4 is characterized in that, in each of the above inventions, the width of the PTC element between the power feeding parts is set to 25 mm or less.
  • each power feeding portion has a common electrode and a plurality of comb-teeth-shaped electrodes extending from the common electrode, and one of the power feeding portions has a comb-teeth-shaped electrode. , And the comb-shaped electrodes of the other power feeding portion are opposed to each other so as to mesh with each other.
  • the showcase according to the invention of claim 6 is provided in a display room having a front opening and is provided with a shelf for displaying products and a PTC heater provided on the shelf, wherein the PTC heater is a PTC element. And at least a pair of power feeding parts feeding the PTC element, each power feeding part having a common electrode having at least a portion arranged in the front-rear direction and a plurality of combs extending from the common electrode in the left-right direction. It has a tooth-shaped electrode, and the comb-teeth-shaped electrode of one of the power feeding portions is arranged so as to face each other so as to mesh with the comb-teeth-shaped electrode of the other power feeding portion.
  • the width of the PTC element between the comb-teeth-shaped electrode of one power feeding portion and the comb-teeth-shaped electrode of the other feeding portion is equal to or less than the width dimension of the product, or 50 mm or less. It is characterized by
  • the shelf is provided so as to be freely drawn out by the slide rails on both the left and right sides, and at least one common electrode of the power feeding portions is arranged on a side portion of the shelf. It is characterized by having a part.
  • the heat generation amount of the PTC element arranged in the front part of the shelf is larger than that of the PTC element arranged in the rear part. To do.
  • the heat generation amount of the PTC element arranged in the front corner of the shelf is larger than the heat generation amount of the PTC element arranged in another region. Is characterized by.
  • the showcase of the invention of claim 11 uses the PTC element having a higher resistance rising temperature in the invention of claim 9 or 10, or narrows the width of the PTC element between the comb-shaped electrodes.
  • the heat generation amount of the PTC element is increased by at least one of increasing the voltage applied to the PTC element and/or increasing the thickness dimension of the PTC element.
  • the showcase of the invention of claim 12 is characterized in that, in the inventions of claims 9 to 11, the cross-sectional area of the comb-teeth-shaped electrode corresponding to the PTC element having a large heat generation amount is larger than that of the other part.
  • the PTC element is not arranged in the central portion of the shelf, or the amount of heat generated in the central portion of the shelf is higher than that in other regions.
  • a small PTC element is arranged.
  • the showcase of the invention of claim 14 is characterized in that, in each of the above inventions, the power supply unit is not provided with a thermal fuse.
  • the showcase of the invention of claim 15 is characterized in that, in each of the above inventions, the inflection point of the temperature resistance curve of the PTC element is from +70°C to +120°C.
  • the showcase of the invention of claim 16 is characterized in that in each of the above inventions, the PTC heater is composed of a heater sheet manufactured by screen printing.
  • the PTC heater in a showcase in which a PTC heater is provided on a shelf for displaying a product, the PTC heater is composed of a PTC element and at least a pair of power feeding portions for feeding power to the PTC element. Since the width of the PTC element between the power feeding portions is set to be equal to or smaller than the width dimension of the product, the product corresponds to the entire area of the PTC element between the power feeding portions.
  • the width of the PTC element between the power feeding parts is 50 mm or less as in the second aspect of the invention.
  • the width of the PTC element between the power feeding sections is set to be half or less of the width dimension of the product as in the invention of claim 3, one of the PTC elements between the power feeding sections always corresponds to one product. Therefore, the product can be heated more finely. Also in this case, it is actually preferable that the width of the PTC element between the power feeding portions is 25 mm or less as in the invention of claim 4.
  • each of the power feeding portions has a structure having a common electrode and a plurality of comb-teeth-shaped electrodes extending from the common electrode, and the comb-teeth-shaped electrodes of one of the power feeding portions have the other of the power feeding portions.
  • the PTC heater is a PTC element
  • the PTC element is composed of at least a pair of power supply parts, each power supply part has a common electrode having at least a portion arranged in the front-rear direction, and a plurality of comb teeth extending from the common electrode in the left-right direction.
  • the comb-shaped electrode of one power feeding section is arranged so as to face the comb-shaped electrode of the other power feeding section so that the comb-shaped electrode of one power feeding section and the comb tooth-shaped electrode of the other power feeding section face each other.
  • the width of the PTC element between the comb-teeth-shaped electrode of one power feeding portion and the comb-teeth-shaped electrode of the other feeding portion can be narrowed to finely heat the product.
  • the width of the PTC element between the comb-teeth-shaped electrode of one power feeding portion and the comb-teeth-shaped electrode of the other feeding portion is set to be equal to or less than the width dimension of the product or 50 mm or less, as in the invention of claim 7.
  • the product corresponds to the entire area of the PTC element between the comb-shaped electrodes.
  • At least one common electrode of the power feeding portions has a portion arranged on the side portion of the shelf.
  • the product of the front part of the shelf which is difficult to be heated can be provided. You will be able to effectively heat.
  • the front of the shelf most difficult to heat. Products in the corner can be heated without any problems.
  • the PTC element having a higher resistance rising temperature as in the invention of claim 11 is used, or the width of the PTC element between the comb-shaped electrodes is narrowed, or the PTC element is heated. It can be increased by increasing the voltage applied to the element or by increasing the thickness of the PTC element.
  • the comb-teeth-shaped electrode for supplying power to the PTC element having a large amount of heat generation is provided. It is possible to prevent the voltage drop at the electrodes and effectively increase the heat generation amount of the PTC element.
  • the PTC element is not arranged in the central portion of the shelf, or the PTC element whose heat generation amount is smaller than that of other regions is arranged in the central portion of the shelf. This makes it possible to eliminate the inconvenience that some products are overheated.
  • the inflection point of the temperature resistance curve of the PTC element in each of the above inventions is set to +70° C. or higher and +120° C. or lower, so that products such as canned beverages and PET bottled beverages can be obtained. It becomes possible to heat appropriately.
  • the PTC heater in each of the above aspects is composed of the heater sheet manufactured by screen printing, it is possible to reduce the production cost and improve the assembling workability. It is a thing.
  • FIG. 6 is a cross-sectional view of the PTC heater of FIG. 5 taken along the line AA. It is a figure which shows the temperature resistance curve of a PTC element. It is a figure explaining the relationship between the width dimension of the PTC element between the comb-teeth electrodes of the PTC heater of FIG.
  • FIG. 6 is another diagram illustrating the relationship between the width dimension of the PTC element between the comb-teeth-shaped electrodes of the PTC heater of FIG. 5 and the width dimension of the product. It is a top view of the PTC heater of the other Example provided in the shelf of FIG. 4 (Example 2).
  • the showcase 1 of the embodiment is a vertical open showcase of a cold/hot switching type installed in a store such as a convenience store and displaying while cooling or heating the product.
  • the main body 2 of the showcase 1 is composed of a heat insulating wall having a U-shaped cross section, and although not shown in FIGS. 1 and 2, actually, side plates made of heat insulating walls are attached to both sides of the main body 2. ..
  • a partition plate 3 is attached to the inside of the main body 2 of the showcase 1 with a space therebetween, a duct 4 is provided between the partition plate 3 and the main body 2, and a front surface opens inside the partition plate 3.
  • the display room 6 is configured.
  • An air outlet 7 is formed at the upper front end of the duct 4 at the upper edge of the opening of the display chamber 6, and a suction port 8 is formed at the lower front edge of the duct 4 at the lower edge of the opening of the display chamber 6. I have been done.
  • an evaporator 9 and a blower 11 are arranged in the duct 4, and the blower 11 blows up cool air that has exchanged heat with the evaporator 9 in the duct 4 to open the display chamber 6 from the outlet 7. To be blown out.
  • the cool air blown out from the air outlet 7 forms a cool air curtain at the opening of the display room 6 and circulates in the display room 6 to be cooled to a predetermined temperature (refrigeration or freezing temperature).
  • the cold air that forms the cool air curtain and the cold air that has circulated in the display chamber 6 flow into the duct 4 through the suction port 8 and are again sucked into the blower 11 to repeat the circulation.
  • a plurality of shelves 12 for displaying products are provided in the display room 6.
  • the shelf 12 is a shelf that can be pulled out and can be switched between a state in which the shelf plate 13 is pushed rearward to be positioned in the display room 6 and a state in which the shelf plate 13 is pulled out to the front (front side).
  • the upper five shelves 12 of the embodiment include a pair of left and right brackets 14 mounted in the display room 6, the above-mentioned shelf plate 13 for placing and displaying products, and the shelf plate 13.
  • each bracket 14 In order to be attached to each bracket 14 so as to be freely drawn out, as shown in the schematic view of FIG. 3, it is composed of a pair of slide rails 16 provided on both left and right sides of the shelf 12 below the shelf plate 13. Then, the brackets 14 are detachably engaged with vertical columns 17 provided on both left and right sides of the partition plate 3 on the back surface of the display room 6, so that the shelves 12 are installed in the display room 6. Has been done.
  • the shelf plate 13 of the embodiment has a rectangular shape that is long in the left and right, and includes an upper plate 18 and a lower plate 19 made of steel plates, a PTC heater 21 attached to the lower surface of the upper plate 18, and this PTC heater.
  • the heat insulating material 22 is made of glass wool or the like and is filled between the lower plate 21 and the lower plate 19.
  • the PTC heater 21 is energized to generate heat while the cooling of the display chamber 6 by the evaporator 9 and the blower 11 is stopped. Let With this, it is possible to heat products such as canned drinks and beverages in PET bottles displayed on the shelf plate 13.
  • the PTC heater 21 provided on the shelf 13 will be described in detail with reference to FIGS. 5 to 9.
  • the PTC heater 21 of this embodiment includes a PTC element (a positive electrode) between upper and lower laminate films 23 and 24 having a rectangular shape that is long in the left-right direction along the shape of the lower surface of the upper plate 18 of the shelf plate 13.
  • An ink-like material 26 having a temperature-resistance characteristic
  • a pair of a first power feeding portion 27 and a second power feeding portion 28 made of silver (ink) for feeding power to the PTC element 26.
  • the power supply portions 27 and 28 are connected to a power source (not shown) to energize the PTC element 26 to generate heat.
  • the PTC heater 21 of the embodiment is a heater sheet manufactured by screen printing, and the manufacturing procedure is as follows. First, the power feeding portions 27 and 28 are printed on the laminate film 23 in a predetermined pattern as shown in FIG. .. Next, the PTC element 26 is printed in a frame shape on which a central portion 21A of the PTC heater 21 is left as shown by hatching in FIG. Then, finally, the laminate film 24 is attached from above. When used, the manufactured heater sheet is used upside down.
  • the PTC element 26 is not arranged in the central portion of the shelf plate 13 (the portion corresponding to the central portion 21A of the PTC heater 21). Further, in the embodiment, as shown in FIG. 5, the area of the front PTC element 26 is made larger than that of the rear portion of the shelf plate 13, so that the heat generation amount of the front PTC element 26 becomes larger than that of the rear portion. ing.
  • the optimum PTC element 26 for heating products such as canned drinks and beverages in PET bottles those whose inflection point of the temperature resistance curve is +70°C or more and +120°C or less are used (Fig. 7).
  • the product can be heated to an appropriate temperature by self-control using PTC without using a temperature sensor or a thermal fuse.
  • an inflection point of +70° C. (shown by PTC1 in FIG. 7) is used.
  • the first power supply unit 27 has a frame-shaped common electrode 31 surrounding the PTC heater 21 and a plurality of comb-teeth electrodes 32A and 32B.
  • the common electrode 31 includes a left side portion 31A disposed on the left side in the front-rear direction, a right side portion 31B disposed on the right side in the front-rear direction, a rear end portion 31C extending left and right at a rear end, and a left and right side at a front end. It has a crossing front end 31D.
  • the power source is connected to the central portion of the rear end portion 31C (not shown).
  • the left side portion 31A, the right side portion 31B, and the rear end portion 31C have the same width.
  • the front end portion 31D has a width narrower than those of the front end portion 31D, and the width thereof is the same as the width W3 of the comb-teeth electrodes 32A and 32B described later.
  • the comb-teeth electrode 32A extends in the right direction from the left side portion 31A, and the comb-teeth electrode 32B extends in the left direction from the right side portion 31B. Then, the left side portion 31A and the right side portion 31B of the common electrode 31 are arranged on the left and right side portions of the shelf board 13, respectively.
  • the second power feeding portion 28 has a common electrode 33 arranged in the front-rear direction in the central portion of the PTC heater 21 and a plurality of comb-teeth electrodes 34A and 34B.
  • the common electrode 33 has a central portion 33A arranged in the front-rear direction at the central portion, and extends from the rear portion of the central portion 33A for a predetermined distance in the left-right direction, is bent at a right angle to the front side, and extends for a predetermined distance in the front direction.
  • left branch portion 33B and a right branch portion 33C which are present, and the left branch portion 33B faces the right side of the left side portion 31A of the first power feeding section 27 at a predetermined interval, and the front end of this left branch portion 33B is The process ends before the front end of the left side portion 31A by a predetermined distance (before the PTC element 26 in the front portion).
  • the right branch portion 33C of the common electrode 33 opposes the left side of the right side portion 31B of the first power feeding portion 27 with a predetermined gap, and the front end of the right branch portion 33C is a predetermined distance before the front end of the right side portion 31B ( (Before the front PTC element 26).
  • the comb-tooth-shaped electrode 34A extends in the left direction from the central portion 33A and the left branch portion 33B of the common electrode 33, and the comb-tooth-shaped electrode 34B extends to the right from the central portion 33A and the right branch portion 33C. It extends in a direction.
  • the comb-teeth shaped electrodes 32A, 32B of the first power feeding section 27 and the comb-teeth shaped electrodes 34A, 34B of the second power feeding section 28 are arranged facing each other with a space therebetween.
  • the comb-teeth-shaped electrodes 32A of the first power feeding portion 27 are finished before the central portion 33A and the left branch portion 33B of the common electrode 33 of the opposing second power feeding portion 28, and the first power feeding portion 32A is finished.
  • Each comb-tooth-shaped electrode 32B of the portion 27 ends before the central portion 33A and the right branch portion 33C of the common electrode 33 of the opposing second power feeding portion 28.
  • each comb-tooth-shaped electrode 34A of the second power feeding portion 28 ends before the left side portion 31A of the common electrode 31 of the first power feeding portion 27 facing each other, and each comb electrode of the second power feeding portion 28 is finished.
  • the tooth-shaped electrode 34B ends before the right side portion 31B of the common electrode 31 of the opposing first power feeding portion 27.
  • the PTC element 26 is arranged between the comb-teeth electrode 32A and the comb-teeth electrode 34A, between the comb-teeth electrode 32B and the comb-teeth electrode 34B, and between the rear end portion 31C and the comb-teeth electrodes 34A and 34B.
  • the width W1 is set to 20 mm in the embodiment (FIG. 6).
  • the tip of the comb-tooth-shaped electrode 34A (shown by 34A1 in FIG. 5) at the front end of the central portion 33A of the common electrode 33 of the second power feeding portion 28 is branched into two and left at a predetermined interval from each other.
  • the comb-shaped electrode 32A (shown by 32A1 in FIG. 5) at the front end of the left side portion 31A of the common electrode 31 of the first power feeding portion 27 is formed into branch portions 34A2 and 34A3. It is in the middle.
  • the tip of the comb-shaped electrode 34B (shown by 34B1 in FIG. 5) at the front end of the central portion 33A of the common electrode 33 of the second power feeding portion 28 is also branched into two and is spaced apart from each other by a predetermined distance to the right.
  • the comb-shaped electrode 32B (shown by 32B1 in FIG. 5) at the front end of the right side portion 31B of the common electrode 31 of the first power feeding portion 27 is formed into branch portions 34B2 and 34B3. It is in the middle.
  • the width of the PTC element 26 between the front end portion 31D and the comb-teeth shaped electrodes 34A1 and 34B1 is also set to 20 mm as described above, but as shown in FIG. 6, due to the configuration of the branch portions 34A2, 34A3, 34B2 and 34B3 as described above. Between the front end portion 31D and the branch portions 34A2 and 34B3, between the branch portion 34A2 and the comb-tooth-shaped electrode 32A1, between the comb tooth-shaped electrode 32A1 and the branch portion 34A3, between the branch portion 34A3 and the comb-tooth-shaped electrode 32A on the back side, and the branch portion.
  • the width W2 of the PTC element 26 is It is about half of the width W1 and is set to about 10 mm in the embodiment (FIG. 6).
  • the width W2 of the PTC element 26 between the electrodes at the left and right front corners of the shelf plate 13 at which it is most difficult to heat the product is about half of the width W1 at other portions, and a large amount of current flows. As a result, the amount of heat generated is larger than in other areas, and the product in the front corner can be effectively heated.
  • each comb-tooth electrode 32A, 32B, 34A, 34B is set to 1.5 mm in the embodiment, but the width W3 of the comb-tooth electrode 34A1 toward the branch portions 34A2, 34A3 is
  • the width W4 of the comb-teeth electrode 34B1 toward the branch portions 34B2 and 34B3 is set to 3 mm, which is twice the width W4 in the embodiment.
  • the cross-sectional area of the comb-tooth-shaped electrodes 34A1 and 34B1 is twice as large as that of the other portions in the embodiment, the voltage drop at the comb-tooth-shaped electrodes 34A1 and 34B1 is prevented, and the branch portions 34A2, 34A3, 34B2, and 34B3 are formed. A large current can be passed without any trouble.
  • the width (diameter) of products such as canned drinks and PET bottled drinks displayed on the shelf plate 13 of the shelf 12 is 50 mm to 65 mm in most cases. Therefore, as shown in FIG. 8, the width W1 of the PTC element 26 between the electrodes (representatively E in FIG. 8) is set to be equal to or less than the width dimension of the product (indicated by G in FIG. 8), for example, surely equal to or less than the width dimension. If it is set to 50 mm, the possibility that the product G will correspond to the entire area in the width direction of the PTC element 26 between the electrodes is high, and as described above, the heat generation amount of the PTC element 26 is affected by the temperature of the place where the product does not exist. Is less likely to be reduced.
  • the width W1 is set to 50 mm, there is a possibility that the product G is arranged across the two PTC elements 26 as illustrated in the upper left of FIG. Therefore, for example, if the width W1 of the PTC element 26 between the electrodes as shown in FIG. 9 is half or less of the width dimension of the product G, for example, 25 mm which is half of the width in FIG.
  • the width W1 of the PTC element 26 between the electrodes as shown in FIG. 9 is half or less of the width dimension of the product G, for example, 25 mm which is half of the width in FIG.
  • the above-mentioned problem does not occur, and it becomes possible to heat the product G finely.
  • the width W1 between the electrodes in the embodiment is set to 20 mm for the above reason, but it is effective if the width W1 is 50 mm or less in the sense that it is less than the width dimension of the product. Then, it is desirable that the width dimension of the product is half or less, more preferably 25 mm or less, so that fine heating can be performed.
  • the minimum value of the width W1 may be determined by the manufacturing limit.
  • the PTC heater 21 provided on the shelf plate 13 of the shelf 12 is composed of the PTC element 26 and the pair of the first power feeding section 27 and the second power feeding section 28 that feed power to the PTC element 26. Since the width of the PTC element 26 between the comb-teeth-shaped electrodes 32A and 32B formed on 27 and 28 and the comb-teeth-shaped electrodes 34A and 34B is set to be equal to or less than the width dimension of the product (50 mm or less), The product can be made to correspond to the entire area of the PTC element 26.
  • the width of the PTC element 26 between the electrodes is set to be half the width of the product or less (25 mm or less) as in the embodiment, one of the PTC elements 26 between the electrodes must correspond to one product. Therefore, the product can be heated more finely.
  • each of the power feeding portions 27 and 28 includes a common electrode 31 having at least a left side portion 31A and a right side portion 31B arranged in the front-rear direction, and a common electrode having a central portion 33A, a left branch portion 33B, and a right branch portion 33C.
  • 33 and the comb-teeth shaped electrodes 32A, 32B, 34A, 34B extending in the left-right direction from them, and the comb-teeth shaped electrodes 32A, 32B of one of the feeding portions 27 are connected to those of the other feeding portion 28.
  • the comb electrodes 34A and 34B are arranged to face each other so as to mesh with each other.
  • the front end portion 31D has a narrow width like the comb-teeth-shaped electrodes 32A and 32B, so that the PTC element 26 is arranged close to the front portion of the shelf plate 13 where the product is not easily heated, You will be able to effectively heat.
  • the width of the PTC element 26 between the comb-teeth-shaped electrodes 32A and 32B of the first power feeding section 27 and the comb-teeth-shaped electrodes 34A and 34B of the second power feeding section 28 can be narrowed to finely heat the product. It will be possible. Therefore, it becomes possible to generate the amount of heat generated between the comb-teeth-shaped electrodes 32A and 34A and between the comb-shaped electrodes 32B and 34B in the PTC element 26 according to the temperature of the product.
  • the shelf 12 is provided so as to be freely drawn out by the slide rails 16 on the left and right sides, but the common electrode 31 of the first power feeding portion 27 has a left side portion 31A and a right side portion 31B as in this embodiment.
  • the side portions of the shelf plate 13 of the lower shelf 12 which becomes an ineffective space due to the existence of the slide rails 16 of the upper shelf 12, are used to utilize the left side portion 31A and the right side portion 31B of the common electrode 31. Will be able to place.
  • the heat generation amount of the PTC element 26 arranged in the front part of the shelf plate 13 is made larger than the heat generation amount of the PTC element 26 arranged in the rear part, so that it is difficult to heat the front part of the shelf plate 13. You will be able to effectively heat the product.
  • the heat generation amount of the PTC elements 26 arranged in the left and right front corners of the shelf plate 13 is made larger than the heat generation amount of the PTC elements 26 arranged in other regions, the shelf which is the most difficult to be heated.
  • the products in the left and right front corners of the plate 13 can be heated without any trouble.
  • the cross-sectional areas of the comb-teeth-shaped electrodes 34A1 and 34B1 corresponding to the PTC elements 26 at the left and right front corners of the shelf plate 13 that generate a large amount of heat are expanded as compared with the other portions, the amount of heat generated is increased. It is possible to prevent a voltage drop in the comb-teeth-shaped electrodes 34A1 and 34B1 that supply power to the PTC element 26 desired to be large, and effectively increase the heat generation amount of the PTC element 26.
  • the PTC element 26 is not arranged in the central portion of the shelf plate 13, it is possible to eliminate the inconvenience that the product in the central portion gets too warm. Further, according to the above-mentioned configuration, it is not necessary to connect the temperature fuses to the power feeding units 27 and 28, so that the production cost can be reduced.
  • the inflection point of the temperature resistance curve of the PTC element 26 is set to +70° C. or higher and +120° C. or lower, so that products such as canned beverages and PET bottled beverages can be suitably heated. Become. Furthermore, in the embodiment, since the PTC heater 21 is composed of the heater sheet manufactured by screen printing, the production cost can be reduced and the assembling workability can be improved.
  • the width of the PTC element 26 between the electrodes is made narrower than the other areas to increase the heat generation amount of the PTC element 26 at the left and right front corners of the shelf board 13, but not limited to this, for example,
  • a PTC element having a higher resistance rising temperature for example, a PTC element shown by PTC2 in FIG. 7 having a higher resistance rising temperature than PTC1 (for example, an inflection point is +120° C.)
  • the amount of heat generated may be increased, or the thickness of the PTC element 26 may be increased to increase the amount of heat generated.
  • the PTC heaters may be arranged in double.
  • the amount of heat generated by the PTC element 26 in the front portion of the shelf plate 13 is made larger than that in the rear portion thereof.
  • a PTC element having a higher resistance rising temperature may be used, or the thickness dimension of the PTC element may be enlarged to increase the heat generation amount in the front portion rather than in the rear portion.
  • the PTC heaters may be arranged in double.
  • the PTC element is not arranged in the central portion of the shelf plate 13, but the present invention is not limited to this, and the PTC element whose heat generation amount is smaller than that in other regions is arranged in the central portion of the shelf plate 13. May be. In that case, for example, a PTC element having a small thickness is arranged in the center of the shelf plate 13, or a PTC element having a lower resistance rising temperature is used. Alternatively, the PTC elements may be sparsely arranged at intervals.
  • FIG. 10 shows another embodiment of the PTC heater 21.
  • the PTC heater 21 of this embodiment also has the same basic structure, material, and manufacturing procedure as in the case of FIG. 5 (Embodiment 1), but the shape of the PTC element 26 and the patterns of the power supply portions 27 and 28 are different.
  • the PTC element 26 is printed in a rectangular shape that is long in the left-right direction so as to be arranged on substantially the entire surface of the shelf plate 13.
  • the common electrode 31 of the first power feeding unit 27 is arranged on the left side of the PTC heater 21 in the front-rear direction and is located on the left side of the shelf plate 13. From the common electrode 31, a plurality of comb-teeth-shaped electrodes 32 are formed. It extends to the right toward you.
  • the common electrode 33 of the second power supply unit 28 is arranged in the front-rear direction on the right side of the PTC heater 21, and is located on the right side of the shelf plate 13. From the common electrode 33, the plurality of comb-teeth-shaped electrodes 34 are formed. It extends to the left toward you.
  • the comb-teeth-shaped electrode 32 of the first power feeding unit 27 and the comb-teeth-shaped electrode 34 of the second power feeding unit 28 are arranged so as to face each other with a space therebetween. Also in this case, the comb-teeth-shaped electrodes 32 of the first power feeding unit 27 are finished before the common electrode 33 of the opposing second power-feeding unit 28, and the comb-teeth-shaped electrodes 32 of the second power feeding unit 28 are finished.
  • the electrode 34 ends before the common electrode 31 of the opposing first power supply unit 27.
  • the PTC element 26 is arranged between the comb-teeth-shaped electrode 32 and the comb-teeth-shaped electrode 34, and its width (W1) is set to 20 mm, which is less than the width dimension of the product, as in the above-described embodiment. Also in this embodiment, the width of the PTC element 26 between the comb-teeth-shaped electrodes 32 and 34 is set to 50 mm or less, preferably 25 mm or less, which is less than half the width of the product.
  • the PTC heater 21 having the first power feeding portion 27 and the second power feeding portion 28 has been described, but more pairs of power feeding portions are arranged to warm the product more finely. You can

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

[Problème] Fournir une vitrine avec laquelle il est possible de chauffer en douceur et uniformément un produit en utilisant un dispositif de chauffage à coefficient de température positif disposé sur une étagère. [Solution] Cette vitrine est configurée de sorte qu'un dispositif de chauffage à coefficient de température positif 21 soit fourni à une étagère sur laquelle un produit est exposé. Le dispositif de chauffage à coefficient de température positif 21 comprend un élément de chauffage à coefficient de température positif 26, et une première unité d'alimentation électrique 27 et une seconde unité d'alimentation électrique 28 qui fournissent de l'énergie à l'élément de chauffage à coefficient de température positif 26, la largeur de l'élément de chauffage à coefficient de température positif 26 entre les électrodes 32A, 32B de la première unité d'alimentation électrique 27 et des électrodes 34A, 34B de la seconde unité d'alimentation électrique 28 étant réglées de manière égale ou inférieure à la largeur du produit.
PCT/JP2019/047994 2018-12-14 2019-12-09 Vitrine Ceased WO2020121990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-234329 2018-12-14
JP2018234329A JP2020092950A (ja) 2018-12-14 2018-12-14 ショーケース

Publications (1)

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WO2020121990A1 true WO2020121990A1 (fr) 2020-06-18

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PCT/JP2019/047994 Ceased WO2020121990A1 (fr) 2018-12-14 2019-12-09 Vitrine

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JP (1) JP2020092950A (fr)
WO (1) WO2020121990A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024252622A1 (fr) * 2023-06-08 2024-12-12 日本電気株式会社 Élément de transport de marchandises, élément de support pour étagère de présentation et étagère de présentation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH026992U (fr) * 1988-06-28 1990-01-17
JPH03151601A (ja) * 1989-11-08 1991-06-27 Murata Mfg Co Ltd 有機正特性サーミスタ
JP2003190025A (ja) * 2001-12-27 2003-07-08 Sanyo Electric Co Ltd 温蔵ケース
JP2005073941A (ja) * 2003-08-29 2005-03-24 Fukushima Industries Corp 温蔵庫
JP2005278814A (ja) * 2004-03-29 2005-10-13 Sanyo Electric Co Ltd ショーケース
JP2011014269A (ja) * 2009-06-30 2011-01-20 Panasonic Corp 面状発熱体

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH026992U (fr) * 1988-06-28 1990-01-17
JPH03151601A (ja) * 1989-11-08 1991-06-27 Murata Mfg Co Ltd 有機正特性サーミスタ
JP2003190025A (ja) * 2001-12-27 2003-07-08 Sanyo Electric Co Ltd 温蔵ケース
JP2005073941A (ja) * 2003-08-29 2005-03-24 Fukushima Industries Corp 温蔵庫
JP2005278814A (ja) * 2004-03-29 2005-10-13 Sanyo Electric Co Ltd ショーケース
JP2011014269A (ja) * 2009-06-30 2011-01-20 Panasonic Corp 面状発熱体

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024252622A1 (fr) * 2023-06-08 2024-12-12 日本電気株式会社 Élément de transport de marchandises, élément de support pour étagère de présentation et étagère de présentation

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