WO2025210862A1 - Ensemble plaque chauffante - Google Patents

Ensemble plaque chauffante

Info

Publication number
WO2025210862A1
WO2025210862A1 PCT/JP2024/014009 JP2024014009W WO2025210862A1 WO 2025210862 A1 WO2025210862 A1 WO 2025210862A1 JP 2024014009 W JP2024014009 W JP 2024014009W WO 2025210862 A1 WO2025210862 A1 WO 2025210862A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
heater
holder
cover
assembly
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.)
Pending
Application number
PCT/JP2024/014009
Other languages
English (en)
Japanese (ja)
Inventor
遼 篠原
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.)
Heart Co Ltd
Original Assignee
Heart Co Ltd
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 Heart Co Ltd filed Critical Heart Co Ltd
Priority to PCT/JP2024/014009 priority Critical patent/WO2025210862A1/fr
Priority to JP2024540801A priority patent/JP7561471B1/ja
Priority to TW114104943A priority patent/TWI894101B/zh
Publication of WO2025210862A1 publication Critical patent/WO2025210862A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/08—Means for preventing radiation, e.g. with metal foil
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/30—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • 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
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates

Definitions

  • This disclosure relates to a heater plate assembly.
  • Heater plate assemblies used as cooking hot plates and the like are known.
  • the cooking hot plates disclosed in Patent Documents 1 and 2 comprise a cooking plate body with a top plate on its upper surface.
  • the cooking plate body comprises a film heater on the underside of the top plate that generates heat when electricity is applied, and a back plate located on the underside of the film heater.
  • the back plate reflects radiant heat from the film heater.
  • the cooking hot plates in Patent Documents 1 and 2 have no space between the film heater and the surface plate, which reduces heat loss caused by heating a large space. Furthermore, because heat is generated evenly across a wide area on the back of the surface plate, temperature variations on the heating surface of the surface plate are reduced.
  • the object of the present disclosure is to provide a heater plate assembly that improves thermal efficiency.
  • the heater plate assembly is constructed integrally from a plate that comes into contact with the object to be heated and a film heater that generates heat when electricity is applied.
  • This heater plate assembly includes a plate, a film heater, two insulating sheets, a power supply connection, a heater holder, and a plate cover.
  • the heater holder is made of thermally conductive metal and covers the film heater on the side opposite the plate.
  • the heater holder holds the film heater with an insulating sheet between the holding surface, which is the surface facing the film heater, and the assembly surface of the plate, and radiates heat from the radiation surface, which is the surface opposite the holding surface.
  • the thickness of the plate is thicker than the thickness of the heater holder. This allows more of the heat generated by the film heater to be transferred to the plate, which has a relatively large heat capacity, thereby further improving the thermal efficiency of heating the plate.
  • FIG. 1 is a diagram of a cooking appliance in which a heater plate assembly according to one embodiment is used;
  • FIG. 2 is a plan view of a heater plate assembly of one embodiment;
  • FIG. 3 is a bottom view of an embodiment of a heater plate assembly;
  • FIG. 4 is a perspective view of a heater plate assembly according to one embodiment, viewed from the bottom side;
  • FIG. 5 is a front view of an embodiment of a heater plate assembly;
  • FIG. 6 is a schematic exploded view of an embodiment of a heater plate assembly;
  • FIG. 7 is a schematic cross-sectional view of a heater plate assembly according to one embodiment;
  • FIG. 8 is an enlarged view of part VIII of FIG. 7;
  • FIG. 9 is a schematic cross-sectional view of a heater plate assembly of a comparative example.
  • FIG. 1 shows an example of a cooking device 90.
  • This cooking device 90 heats an object to be heated, such as bread, from both the top and bottom sides by sandwiching it between a base 91 supported by a bottom case 92 and a cover 93.
  • the cover 93 rotates around a hinge 98 as a fulcrum, allowing it to be opened and closed relative to the base 91.
  • a heater plate assembly 100 is attached to the top surface of the base 91 and the bottom surface of the cover 93.
  • the heating surface 21 of the plate 20 of the heater plate assembly 100 is exposed to the outside, while the other elements are hidden behind the plate 20.
  • the heater plate assembly 100 on the base 91 side can be removed by simply lifting it up.
  • the heater plate assembly 100 on the cover 93 side can be removed by disengaging the plate claws 28. The user can remove the heater plate assembly 100 and wash it with water.
  • Figures 2 to 8 The configuration of one embodiment of the heater plate assembly 100 will be described with reference to Figures 2 to 8. External views are shown in Figures 2 to 5.
  • Figures 2 and 3 correspond to views taken in the directions II and III of Figure 4, respectively, and
  • Figure 5 corresponds to a view taken in the direction V of Figure 3.
  • Figure 6 shows a schematic exploded view.
  • Figure 7 shows a schematic cross-sectional view of one side relative to the central axis O
  • Figure 8 shows an enlarged view of part VIII of Figure 7.
  • the thickness dimensions of particularly thin components are exaggerated.
  • the heater plate assembly 100 of this embodiment is a roughly rectangular plate with long sides corresponding to the front-to-rear direction of the cooking appliance 90 and short sides corresponding to the left-to-right direction of the cooking appliance 90.
  • the heating surface 21 of the plate 20 is exposed on one side, and the cover back surface 61 of the plate cover 60 is exposed on the other side.
  • the plate 20 is made of a thermally conductive metal and has a heating surface 21 that comes into contact with the object to be heated, and an assembly surface 24 that is the back surface of the heating surface 21.
  • aluminum is used as the material for the plate 20 because of its thermal conductivity, weldability, and light weight.
  • a film heater 33 and two insulating sheets 32, 34 are arranged on top of each other on the assembly surface 24 side of the plate 20. As shown by the dashed lines in Figures 2 and 3, the rectangular shapes of the film heater 33 and the insulating sheets 32, 34 are the same size.
  • the film heater 33 is a thin-film heater with a zigzag conductive path formed, and is also called a circuit heater.
  • the film heater 33 has less heat loss than a sheathed heater, which heats a large surrounding space, and can heat the entire heating surface 21 of the plate 20 evenly.
  • Two insulating sheets 32 and 34 are placed on either side of the film heater 33, insulating both sides of the film heater 33.
  • the heater holder 50 is made of a thermally conductive metal and covers the film heater 33 on the side opposite the plate 20 (the upper side in the figure).
  • aluminum is used as the material for the heater holder 50 because of its thermal conductivity, weldability, and light weight.
  • the surface of the heater holder 50 facing the film heater 33 (lower side in the figure) is called the holding surface 51, and the surface opposite the holding surface 51 (upper side in the figure) is called the radiation surface 53.
  • the heater holder 50 holds the film heater 33 between the holding surface 51 and the assembly surface 24 of the plate 20 via insulating sheets 32 and 34. More specifically, holes to prevent misalignment are formed in the film heater 33 and the insulating sheets 32 and 34, and protrusions to prevent misalignment that correspond to the holes are formed on the holding surface 51 of the heater holder 50.
  • the heater holder 50 has a holder flange 52 located outside the outer periphery of the film heater 33 and insulating sheets 32, 34.
  • the holder flange 52 is formed so as to bend in a step from the holding surface 51 toward the plate 20. The height of the step corresponds to the thickness of the film heater 33 and insulating sheets 32, 34 stacked together.
  • the holder flange 52 is welded to the inner frame region 25 on the assembly surface 24 of the plate 20. By welding the holder flange 52 to the plate 20, the film heater 33 and insulating sheets 32, 34 are fixed integrally with the plate 20 and heater holder 50.
  • a holder insertion hole 54 is formed in the center of the heater holder 50, through which the power connection part 40 can be inserted.
  • the plate cover 60 is made of metal and covers the heater holder 50 on the side opposite the plate 20 (the upper side in the figure).
  • aluminum is used as the material for the plate cover 60 because of its radiant heat reflectivity, weldability, and light weight.
  • SUS304 which is used for the back plate in the prior art of Patent Documents 1 and 2, may be used, although it is less lightweight than aluminum due to its radiant heat reflectivity.
  • the surface of the plate cover 60 facing the radiation surface 53 of the heater holder 50 is called the reflective surface 65, and the exposed surface on the opposite side of the reflective surface 65 (the upper side in the figure) is called the back surface 61 of the cover.
  • the reflective surface 65 reflects radiant heat from the radiation surface 53 of the heater holder 50 back towards the heater holder 50, preventing heat from leaking from the back surface 61 of the cover to the outside.
  • the plate cover 60 forms an air chamber 66 between the reflective surface 65 and the radiation surface 53 of the heater holder 50.
  • the air inside the air chamber 66 has a lower thermal conductivity than metal, and therefore functions as an insulating layer.
  • a check valve 68 with a vent function is provided in one corner of the plate cover 60.
  • the check valve 68 is made of an elastic material such as rubber, and is attached to a check valve mounting hole 67 formed in the plate cover 60.
  • the waterproof ring 70 is formed, for example, from silicone rubber, and is provided along the outer peripheral wall 43 of the tubular housing portion 41.
  • the lower end of the waterproof ring 70 faces the flange portion 42 of the tubular housing portion 41.
  • the waterproof ring 70 prevents water from entering through the gaps between the outer peripheral wall 43 of the tubular housing portion 41 and the holder insertion hole 54 and cover insertion hole 64.
  • the inner peripheral wall of the waterproof ring 70 is formed with protrusions (not shown) that increase the contact surface pressure with the outer peripheral wall 43 of the tubular housing portion 41. Because the heater plate assembly 100 is washed with water, waterproof performance is required to prevent short circuits and corrosion, especially in electrical components.
  • a fitting groove 75 is formed in the middle of the outer wall of the waterproof ring 70 in the height direction, into which the inner peripheral edge 55 of the holder insertion hole 54 of the heater holder 50 fits.
  • the bottom and upper and lower walls of the fitting groove 75 abut against the inner peripheral edge 55 on three sides, ensuring high waterproofing performance against water intrusion into the area housing the electrical components.
  • the inner peripheral wall of the cover insertion hole 64 which is bent so as to extend axially, abuts against the outer peripheral wall of the upper end of the waterproof ring 70. Even if water seeps into the air chamber 66 through the gap between the waterproof ring 70 and the cover insertion hole 64, it will not directly affect the electrical components, so a higher level of waterproofing is not required compared to the gap with the holder insertion hole 54. However, there is a possibility that the internal pressure of the air chamber 66 will increase due to steam generated when the water that has seeped into the air chamber 66 is heated. For this reason, a check valve 68 is provided in the plate cover 60, as described above.
  • FIG. 9 shows a schematic cross-sectional view of a heater plate assembly 110 corresponding to the prior art disclosed in Patent Documents 1 and 2.
  • an upper insulating sheet 13, a film heater 14, and a lower insulating sheet 15 are stacked and held between a front plate 11 and a back plate 17.
  • the back plate 17 is fastened to the connecting protrusions of the front plate 11 with screws 19.
  • Waterproof gaskets 12 are provided on the outer edges between the front plate 11 and the back plate 17 and in the seats of the screws 19.
  • the back plate 17 and front plate 11 are fastened together with multiple screws 19, the number of parts is large and the labor required increases.
  • the surface plate 11 requires thicker metal to provide connecting protrusions, which increases weight.
  • variations in the assembly work required to sandwich the waterproof packing 12 between the back plate 17 and front plate 11 make it difficult to ensure stable waterproof performance.
  • the heater plate assembly 100 of this embodiment unlike the back plate 17 of the comparative example, has a double structure consisting of the heater holder 50 and plate cover 60, which forms an air chamber 66 between them.
  • the radiating surface 53 of the heater holder 50 is not directly exposed to the outside, and the air layer inside the air chamber 66 functions as an insulating layer.
  • the reflective surface 65 of the plate cover 60 reflects radiant heat, allowing the heat to be transferred efficiently to the plate 20 side. This improves the thermal efficiency of heating the plate 20 using heat generated by the film heater 33.
  • the heater holder 50 and plate cover 60 are welded to the plate 20 without the use of screws 19, thereby reducing the number of parts. Furthermore, no connecting protrusions for screw fastening are required, and the plate 20 and heater holder 50 are made of aluminum, resulting in a lighter weight. Additionally, the heater holder 50 and plate cover 60 are welded to the inner frame region 25 and outer frame region 26 on the assembly surface 24 of the plate 20, resulting in improved waterproofing due to the double-frame sealing.
  • the heater plate assembly of the present disclosure is not limited to use in cooking appliances for food preparation, but may also be used in heaters for any purpose in which heat is transferred to an object in contact with the plate, such as for crafts, arts and crafts, or medical purposes.
  • the terminal for supplying power is essential, but the terminal for detecting temperature is not required if a sensorless system is adopted.
  • the temperature is estimated by calculating the resistance from the current value based on the resistance-temperature characteristics of the film heater 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Baking, Grill, Roasting (AREA)
  • Resistance Heating (AREA)
  • Thermal Insulation (AREA)
  • Surface Heating Bodies (AREA)
  • Cookers (AREA)
  • Control Of Resistance Heating (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

L'invention concerne un ensemble plaque chauffante dans lequel une plaque avec laquelle un objet à chauffer vient en contact et un dispositif de chauffage de film qui génère de la chaleur par excitation sont formés d'un seul tenant, ledit ensemble plaque chauffante comprenant : une plaque (20) ; un dispositif de chauffage de film (33) ; deux feuilles d'isolation (32, 34) ; une partie de connexion d'alimentation électrique (40) ; un support de dispositif de chauffage (50) ; et un couvercle de plaque (60). La plaque est formée d'un métal thermoconducteur et a une surface de chauffage (21) avec laquelle l'objet à chauffer vient en contact et une surface d'assemblage (24). Le support de dispositif de chauffage est formé d'un métal thermoconducteur et recouvre le dispositif de chauffage de film sur le côté opposé à la plaque par rapport au dispositif de chauffage de film. Le support de dispositif de chauffage maintient le dispositif de chauffage de film entre une surface de maintien (51) et la surface d'assemblage de la plaque par l'intermédiaire des feuilles d'isolation et rayonne de la chaleur à partir d'une surface de rayonnement (53). Le couvercle de plaque est formé d'un métal et recouvre le support de dispositif de chauffage sur le côté opposé à la plaque par rapport au support de dispositif de chauffage. Le couvercle de plaque forme une chambre à air (66) entre une surface de réflexion (65) et la surface de rayonnement du support de dispositif de chauffage.
PCT/JP2024/014009 2024-04-05 2024-04-05 Ensemble plaque chauffante Pending WO2025210862A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2024/014009 WO2025210862A1 (fr) 2024-04-05 2024-04-05 Ensemble plaque chauffante
JP2024540801A JP7561471B1 (ja) 2024-04-05 2024-04-05 ヒータプレートアセンブリ
TW114104943A TWI894101B (zh) 2024-04-05 2025-02-11 加熱盤組件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/014009 WO2025210862A1 (fr) 2024-04-05 2024-04-05 Ensemble plaque chauffante

Publications (1)

Publication Number Publication Date
WO2025210862A1 true WO2025210862A1 (fr) 2025-10-09

Family

ID=92909803

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/014009 Pending WO2025210862A1 (fr) 2024-04-05 2024-04-05 Ensemble plaque chauffante

Country Status (3)

Country Link
JP (1) JP7561471B1 (fr)
TW (1) TWI894101B (fr)
WO (1) WO2025210862A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497467B1 (fr) * 1967-03-17 1974-02-20
US4237368A (en) * 1978-06-02 1980-12-02 General Electric Company Temperature sensor for glass-ceramic cooktop
JP2004159880A (ja) * 2002-11-13 2004-06-10 Sengoku:Kk ホットプレート
US20110132895A1 (en) * 2009-12-04 2011-06-09 Electrolux Professional S. P. A. Cooking appliance
KR20150079468A (ko) * 2013-12-30 2015-07-08 주식회사 더오디 음식물 조리기용 가열장치
CN110623554A (zh) * 2018-06-22 2019-12-31 恩斯纽马克有限责任两合公司 电烘焙或者烧烤装置
JP2020150991A (ja) * 2019-03-18 2020-09-24 三菱電機株式会社 加熱調理器
JP3233768U (ja) * 2021-06-22 2021-09-02 株式会社Ｊ−Ｆｕｎ 調理用ホットプレート

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109832928A (zh) * 2019-03-25 2019-06-04 芜湖艾尔达科技有限责任公司 一种速热容器加热装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497467B1 (fr) * 1967-03-17 1974-02-20
US4237368A (en) * 1978-06-02 1980-12-02 General Electric Company Temperature sensor for glass-ceramic cooktop
JP2004159880A (ja) * 2002-11-13 2004-06-10 Sengoku:Kk ホットプレート
US20110132895A1 (en) * 2009-12-04 2011-06-09 Electrolux Professional S. P. A. Cooking appliance
KR20150079468A (ko) * 2013-12-30 2015-07-08 주식회사 더오디 음식물 조리기용 가열장치
CN110623554A (zh) * 2018-06-22 2019-12-31 恩斯纽马克有限责任两合公司 电烘焙或者烧烤装置
JP2020150991A (ja) * 2019-03-18 2020-09-24 三菱電機株式会社 加熱調理器
JP3233768U (ja) * 2021-06-22 2021-09-02 株式会社Ｊ−Ｆｕｎ 調理用ホットプレート

Also Published As

Publication number Publication date
TW202539569A (zh) 2025-10-16
TWI894101B (zh) 2025-08-11
JPWO2025210862A1 (fr) 2025-10-09
JP7561471B1 (ja) 2024-10-04

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