WO2017094968A1 - Structure de fixation d'élément chauffant planaire pour cuiseur à riz électrique - Google Patents

Structure de fixation d'élément chauffant planaire pour cuiseur à riz électrique Download PDF

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Publication number
WO2017094968A1
WO2017094968A1 PCT/KR2016/001691 KR2016001691W WO2017094968A1 WO 2017094968 A1 WO2017094968 A1 WO 2017094968A1 KR 2016001691 W KR2016001691 W KR 2016001691W WO 2017094968 A1 WO2017094968 A1 WO 2017094968A1
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WO
WIPO (PCT)
Prior art keywords
heating element
planar heating
electrode strip
ring
rice cooker
Prior art date
Application number
PCT/KR2016/001691
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English (en)
Korean (ko)
Inventor
김동원
Original Assignee
주식회사 대유위니아
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
Priority claimed from KR1020150170529A external-priority patent/KR102377828B1/ko
Priority claimed from KR1020150181058A external-priority patent/KR20170072638A/ko
Application filed by 주식회사 대유위니아 filed Critical 주식회사 대유위니아
Publication of WO2017094968A1 publication Critical patent/WO2017094968A1/fr

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    • 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
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • 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
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/086—Pressure-cookers; Lids or locking devices specially adapted therefor with built-in heating means
    • 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
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • 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 plane, e.g. plate-heater

Definitions

  • the present invention relates to a fixed structure of the planar heating element for an electric rice cooker is fixed to the outer surface of the ring-shaped case is installed on the inner upper portion of the base.
  • the electric pressure cooker and the electric rice cooker is a device that can selectively perform the cooking function to cook rice, and the warming function to keep the cooked rice at a constant temperature.
  • the electric pressure cooker and the rice cooker is installed to open and close the lid is formed in the steam discharge hole in the upper portion of the main body, the inner pot is detachably built-in, the inner pot lid is provided separately to cover the inner pot,
  • the main body is provided with a heater of an induction heating method or a hot plate method which allows cooking by transferring heat to cooking objects contained in the inner pot, that is, rice, grains, and other food ingredients.
  • the electric pressure cooker is provided with a locking means capable of sealing the inside of the main body, and a steam discharge valve (solenoid valve) for controlling the discharge of steam in the main body.
  • a steam discharge valve solenoid valve
  • Figure 1 shows an electric rice cooker (electric pressure cooker) using the conventional general induction heating principle shown in Figure 1 of Korean Patent Laid-Open No. 2004-0081909.
  • Electric rice cooker using the induction heating principle has the advantage of heating the outer peripheral surface of the inner pot, unlike the electric rice cooker using the hot plate heating method.
  • the electric rice cooker using the conventional induction heating principle is largely composed of a cover 2 for opening and closing the body (1) and the body (1) of the product.
  • the inner pot 11 is detachably installed inside the main body 1, and a working coil 13 for induction heating the inner pot 11 is installed on an outer circumferential surface of the inner pot 11.
  • the coil base 15 is disposed between the working coil 13 and the inner pot 11 to support the working coil 13.
  • the coil base 15 is mainly used with a PET-based resin injection product having good heat resistance.
  • the case heater coil 23 for heating the ring case 21 is installed on the outer surface of the ring case 21 is supplied with power to operate It is composed.
  • the case heater coil 23 is mainly operated when warming after cooking is completed and sometimes used as an auxiliary heat source when heating.
  • a linear case heater coil heats the ring case. Therefore, the heat is locally transmitted to the inner pot, so that uniform heat transfer is not performed. Electric consumption efficiency is low. When the case heater coil is stopped, cooling is rapidly performed. There is a problem that is required to attach a thick insulating material.
  • an object of the present invention is to provide a fixed structure of the planar heating element for an electric rice cooker which can transfer heat uniformly to the inner pot and improve the electric consumption efficiency of the electric rice cooker.
  • planar heating element for an electric rice cooker to prevent overheating and damage of the planar heating element fixed to the outer surface of the ring-shaped case.
  • the fixing structure of the planar heating element for an electric rice cooker of the present invention a ring-shaped case installed on the inner upper portion of the base for heating the inner pot;
  • a planar heating element fixed to an outer surface of the ring-shaped case; It includes.
  • the outer surface of the planar heating element includes a heat insulating member.
  • the insulating member is characterized in that the metal tape.
  • planar heating element is characterized in that it is fixed to the outer surface of the ring-shaped case surrounding the belt around the outer circumference.
  • planar heating element is characterized in that fixed to the outer surface of the ring-shaped case by a tape.
  • planar heating element is characterized in that it is disposed along the outer peripheral surface of the ring-shaped case.
  • the planar heating element is adjacent to the inner pot and includes a first film layer on which a resistive heating element pattern is printed, wherein the planar heating element is located at the outermost side of the planar heating element and the planar surface of the planar heating element.
  • the resistance heating element patterns positioned at the outermost sides of the heating element are non-overlapping with each other.
  • one end of the planar heating element is spaced so as to have a predetermined distance therebetween and the resistance heating element pattern located at the outermost side of the planar heating element and the other end of the planar heating element and the other end of the planar heating element and the other side of the planar heating element It is characterized in that the overlap with the resistance heating element pattern located at the outermost.
  • one end and the other end of the planar heating element is characterized in that they are spaced apart from each other or have a predetermined distance to each other.
  • the planar heating element is located on the outer surface of the ring-shaped case, it is possible to transfer heat uniformly to the inner pot, and the electrical consumption efficiency is also improved.
  • the heat generating layer of the planar heating element is excellent in heat retention because the cooling rate is slow even when there is no electrical application. Therefore, there is an energy saving effect.
  • the heat insulating performance is improved with respect to the thickness of the heat insulating layer outside the ring-shaped case.
  • planar heating element can be easily fixed to the outer surface of the ring-shaped case through a strip or tape.
  • planar heating element specifically, the resistive heating element pattern printed on the first film layer does not overlap each other, so that excessive current flow can be prevented, so that the planar heating element is not overheated and damaged.
  • FIG. 1 is a cross-sectional view showing a conventional induction heating rice cooker.
  • Figure 2 is a cross-sectional view of the base, the ring-shaped case and the planar heating element according to a preferred embodiment of the present invention.
  • FIG. 3 is an exploded perspective view of FIG. 2;
  • FIG. 4 is a perspective view showing the planar heating element according to the first embodiment.
  • FIG. 5 is a cross-sectional view taken along the line A_A of FIG.
  • FIG. 6 is a structural diagram of the electrode strip and the heating layer of the planar heating element according to the first embodiment.
  • FIG. 7 is an internal structure diagram of a wire connection part according to the first embodiment.
  • FIG 8 is a cross-sectional view showing a coupling portion of an electric wire and an electrode strip according to the first embodiment.
  • 9 to 11 are cross-sectional views showing an arrangement structure (fixed structure) of the planar heating element with respect to the ring-shaped case.
  • FIG. 12 is an exploded perspective view of a planar heating element according to a second embodiment of the present invention.
  • Figure 13 is an enlarged perspective view of the ring-shaped case and the planar heating element according to the second embodiment.
  • the ring-shaped case 150 is installed on the inner upper portion of the base 100 for heating the inner pot; and on the outer surface of the ring-shaped case 150 Planar heating element 200 is fixed; It includes.
  • An electric rice cooker is hinged to the rice cooker body, the rice cooker body and the lid to open and close the upper portion, the base 100 is installed inside the rice cooker body to heat the inner pot; It includes a ring-shaped case 150 which is installed on the inner top of the base 100.
  • Electric rice cookers are well known in the art, including the above-described prior art, Korean Patent Publication No. 2002-0067848, Korean Patent Registration No. 0997758, and the like. Therefore, detailed description thereof will be omitted, and the base 100, the ring-shaped case 150, and the planar heating element 200 will be described below.
  • the base 100 is open at the top and has a substantially semi-circular shape, as shown in FIGS.
  • the base 100 is installed inside the cooker body, and the inner pot (not shown) may be detachably disposed inside the base 100.
  • the coil 110 is disposed along the outer circumference of the base 100 and the lower portion of the base 100 to apply heat to the base 100.
  • the inner pot is heated.
  • the stepped portion 120 is formed on the inner surface of the base 100.
  • the ring-shaped case 150 is fitted to the inner upper part of the base 100 and is mounted on the upper end of the step 120.
  • the ring-shaped case 150 and the base 100 may be integrally formed.
  • the ring-shaped case 150 is formed in a circular ring shape with a center penetrating up and down.
  • circular protrusions 151 protruding outward and hollow are respectively formed on the upper outer circumference and the lower outer circumference of the ring-shaped case 150.
  • the circular protrusion 151 located at the bottom of the ring-shaped case 150 is mounted on the stepped portion 120.
  • planar heating element 200 fixed to the outer circumferential surface of the ring-shaped case 150 will be described in detail.
  • the planar heating element 200 of the present invention is applicable to electric pressure cookers and other electric rice cookers.
  • IH electromagnetic induction
  • the planar heating element 200 is fixed in contact with an outer surface of the ring-shaped case 150.
  • One surface of the planar heating element 200 may be fixed to the outer surface of the ring-shaped case 150 by a double-sided tape or the like.
  • the fixed structure of the planar heating element 200 for an electric rice cooker of the present invention is a concept including both an arrangement and an internal structure, but in the following description, the arrangement and internal structure of the planar heating element 200 for an electric rice cooker will be described separately. Do it.
  • planar heating element 200 for an electric rice cooker according to the first preferred embodiment of the present invention as shown in FIG.
  • planar heating element 200 is disposed along the outer peripheral surface of the ring-shaped case 150.
  • both ends of the planar heating element 200 forms a circular ring shape combined.
  • heat can be uniformly transferred to the outer circumferential surface of the ring-shaped case 150.
  • planar heating element 200 in the second embodiment of the arrangement structure of the planar heating element 200, as shown in FIG. 10, a plurality of planar heating elements 200 are disposed along the outer circumferential surface of the ring-shaped case 150. Therefore, the material can be saved.
  • the planar heating element 200 is arranged in multiple directions on the outer circumferential surface of the ring-shaped case 150 in the vertical direction.
  • Arrangement structure The third embodiment is useful when the height of the planar heating element 200 is smaller than the height of the ring-shaped case 150.
  • the planar heating element 200 can be easily arranged in various forms on the outer peripheral surface of the ring-shaped case 150.
  • the planar heating element 200 is fixed to the outer surface of the ring-shaped case 150 with an adhesive. That is, an adhesive is applied to one surface of the planar heating element 200 to be adhesively fixed to the outer surface of the ring-shaped case 150.
  • the second embodiment of the method for fixing the planar heating element 200 for an electric rice cooker is wrapped around the outer circumference of the planar heating element 200 and fixed to the outer surface of the ring-shaped case 150. That is, the band is pressed and fixed to the outer surface of the ring-shaped case 150.
  • the planar heating element 200 is fixed to the outer surface of the ring-shaped case 150 by a tape. That is, the planar heating element 200 is brought into contact with the outer surface of the ring-shaped case 150 and then fixed with a tape.
  • planar heating element 200 can be easily fixed to be uniformly distributed on the outer surface of the ring-shaped case 150.
  • the planar heating element 200 for an electric rice cooker according to the first embodiment of the present invention, as shown in Figure 3 to 8, the inner film, that is, the first film layer 206 adjacent to the ring-shaped case 150 and The second film layer 208 disposed outward from the inner pot, that is, the ring-shaped case 150, and the first film layer 206 and the second film layer 208 are arranged side by side than the first film layer 206.
  • the first (+) electrode strip 210 and the first (-) electrode strip 211 and the first (+) electrode strip 210 and the first (-) electrode strip 211 spaced apart from each other in the vertical direction.
  • the heat dissipation layer 230 is disposed between and spaced apart from the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211.
  • the second (+) electrode strip 220 and the second (-) electrode strip 221 in a direction facing each other of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211, respectively.
  • (+) wire 240 and (-) wire 241 and (+) wire are protruded and alternately disposed, and are in contact with the heat generating layer 230.
  • (+) wire 240 and (-) wire 241 and (+) wire one end of which is connected to the ends of the first (+) electrode strip 210 and the first (-) electrode strip 211.
  • a wire connection terminal 270 coupled to the other end of the 240 and the negative wire 241.
  • the heat insulating member 280 may be a metal tape.
  • the ring-shaped case 150 not only generates heat evenly, but also has excellent thermal insulation effect.
  • the heat insulation effect of the planar heating element 200 is excellent, while reducing the thickness of the heat insulating material 300 disposed outside the planar heating element 200, it is excellent in the heat insulation performance of the outside of the ring-shaped case 150.
  • the planar heating element 200 is fixed to one surface, that is, the first film layer 206 in contact with the outer surface of the ring-shaped case 150.
  • planar heating element 200 is disposed between the outer surface of the ring-shaped case 150 and the upper inner surface of the base 100.
  • the heat insulating material 300 is disposed outside the planar heating element 200. That is, the heat insulating material 300 is located between the planar heating element 200 and the upper inner surface of the base 100 to improve the heat insulating effect, it is excellent in the heat insulating performance outside the ring-shaped case 150.
  • the planar heating element body 201 having a rectangular band shape, a wire connecting portion 202 formed on one side of the planar heating element body 201, and a positive wire coupled to the wire connecting portion 202 ( 240 and (-) wire 241, and the wire connecting terminal 270 is made.
  • the wire connection terminal 270 is fixed to the end of the (+) wire 240 and the (-) wire 241 is inserted. After fixing the planar heating element body 201 around the outer circumferential surface of the ring-shaped case 150, electric power is facilitated by plugging the wire connection terminal 270 to which the (+) wire 240 and the (-) wire 241 are connected to the power supply. It is possible to energize the planar heating element body 201.
  • a cross section of the planar heating body 201 will be described with reference to FIG. 5.
  • the planar heating element 200 is located outward from the inner pot, that is, the ring-shaped case 150, than the first film layer 206 and the first film layer 206 disposed inside the cooker body so as to be adjacent to the inner pot, that is, the ring-shaped case 150.
  • the second film layer 208 is disposed.
  • the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 are spaced apart from each other in the vertical direction between the first film layer 206 and the second film layer 208.
  • the outer surface of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 is in contact with the inner surface of the second film layer 208.
  • the outer surfaces of the second (+) electrode strip 220 (not shown in FIG. 5) and the second ( ⁇ ) electrode strip 221 also contact the inner surface of the second film layer 208.
  • the heating layer 230 to which electricity is applied is disposed to contact the outer surface of the first film layer 206. That is, it is disposed between the first film layer 206 and the second (-) electrode strip 221.
  • the outer surface that is, the outer surface of the second film layer 208 is in contact with the adhesive (see Figure 7).
  • the first (+) electrode strip 210, the first ( ⁇ ) electrode strip 211, and the second ( ⁇ ) electrode strip may be easy to understand the cross-sectional arrangement order of the planar heating element 200.
  • 221 is shown to be spaced apart from the first film layer 206, the actual planar heating element 200 is compressed from each other from the first film layer 206 to the heat insulating member 280, the first (+) electrode strip ( An inner surface of the first electrode layer 210, the first electrode strip 211, and the second electrode strip 221 may be in contact with an outer surface of the first film layer 206.
  • planar heating element 200 will be described in more detail with reference to FIG. 6.
  • the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 are disposed between the first film layer 206 and the second film layer 208.
  • the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 are spaced apart from each other in the vertical direction and arranged side by side in the longitudinal direction.
  • first (+) electrode strip 210 and the first (-) electrode strip 211 are disposed within the vertical heights of the first film layer 206 and the second film layer 208.
  • the first (+) electrode strip 210 and the first (-) electrode strip 211 are formed in a strip shape having a vertical height narrow and long left and right lengths.
  • the second (+) electrode strip 220 and the second (-) electrode strip 221 in a direction facing each other of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211, respectively. ) Is projected.
  • the second (+) electrode strip 220 and the second (-) electrode strip 221 are disposed to be orthogonal to the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211, respectively. .
  • the second (+) electrode strip 220 and the second (-) electrode strip 221 are alternately disposed at regular intervals along the left and right length directions of the planar heating element 200 to contact the heating layer 230. do.
  • the second (+) electrode strip 220 has an upper end connected to the first (+) electrode strip 210, and a lower end thereof extends downward to protrude downward from the heating layer 230.
  • the second (-) electrode strip 221 has a lower end connected to the first (-) electrode strip 211, and the upper end of the second (-) electrode strip 211 extends upwardly to protrude upward.
  • the heating layer 230 is disposed between the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 spaced apart from each other, so that the first (+) electrode strip 210 and the first ( It is spaced apart from the electrode strip 211.
  • the heating layer 230 has a vertical height d2 greater than the vertical height d5 of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 (d2> d5).
  • the first electrode strip 210 is formed parallel to the first electrode strip 210 and the first electrode strip 211 along the length direction.
  • the heat generating material of the heat generating layer 230 is preferably made of carbon.
  • Carbon materials have increased electrical and physical properties such as high electrical conductivity, thermal conductivity, heat resistance, corrosion resistance, abrasion resistance, and lubricity, and their importance is increasing.
  • the heat generating layer 230 is formed of a carbon material, there is an advantage in that the thermal conductivity is good and the coefficient of thermal expansion is low.
  • the heat generating layer 230 generates electricity by applying electricity through the second (+) electrode strip 220 and the second (-) electrode strip 221.
  • the positive wire 240 and the negative wire 241 connected to one end of each of the first (+) electrode strip 210 and the first (-) electrode strip 211 are respectively. Electricity is applied through. The applied electricity is transmitted to the heating layer 230 through the second (+) electrode strip 220 and the second (-) electrode strip 221.
  • the separation distance (d1) of the adjacent second (+) electrode strip 220 and the second (-) electrode strip 221 is the vertical height of the heating layer 230 ( d2) (d1> d2). Therefore, the number of the second (+) electrode strip 220 and the second (-) electrode strip 221 can be reduced, thereby reducing the material savings.
  • the second (+) electrode strip 220 and the second (-) electrode strip 221 in contact with the heating layer 230 is optimal.
  • the separation distance d1 of the adjacent second (+) electrode strip 220 and the second (-) electrode strip 221 is within a range of 1.5 to 2 times with respect to the vertical height d2 of the heating layer 230. Is preferred.
  • the separation distance d1 of the adjacent second (+) electrode strip 220 and the second (-) electrode strip 221 is the upper surface of the first (+) electrode strip 210 and the first ( ⁇ ).
  • the upper and lower heights d3 between the lower surfaces of the electrode strips 211 are greater than or equal to (d1> d3). Therefore, the number of the second (+) electrode strip 220 and the second (-) electrode strip 221 can be reduced, thereby reducing the material savings.
  • the number of electrode strips 220 and second (-) electrode strips 221 is optimal.
  • the separation distance d1 of the adjacent second (+) electrode strip 220 and the second (-) electrode strip 221 is the upper surface of the first (+) electrode strip 210 and the first (-) electrode.
  • the range of more than 1 to 1.1 times the upper and lower height d3 between the lower surface of the strip 211 is preferable.
  • the separation distance d7 of the heating layer 230 with respect to the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 may be defined as the first (+) electrode strip 210 and the first electrode strip 210. It is larger than the vertical height d5 of the 1 (-) electrode strip 211 (d7> d5). So there is less risk of electric sparks.
  • the distance d7 of the heating layer 230 with respect to the first (+) electrode strip 210 and the first (-) electrode strip 211 is equal to the first (+) electrode strip 210 and the first ( Smaller than the vertical height (d5) of the electrode strip 211, the risk of the electric spark is off.
  • the distance d7 of the heating layer 230 with respect to the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 is the first (+) electrode strip 210 and the first (
  • the upper and lower heights d5 of the electrode strip 211 are preferably in the range of more than 1 to 1.2 times.
  • the lengths of the second (+) electrode strip 220 and the second (-) electrode strip 221 are greater than the vertical height d2 of the heating layer 230.
  • a separation distance between ends of the second (-) electrode strip 221 and the second (+) electrode strip 220 with respect to the first (+) electrode strip 210 and the first (-) electrode strip 211. D6 is smaller than the separation distance d7 of the heat generating layer 230 with respect to the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211.
  • the second (+) electrode strip 220 and the second (-) electrode strip 221 are in contact with the heating layer 230 in the vertical direction and are uniformly applied to the heating layer 230 in the vertical direction. Is possible.
  • the distance d7 of the heating layer 230 with respect to the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 is the first (+) electrode strip 210 and the first ( A range of more than 1 to 1.2 times of the separation distance d6 between the ends of the second (-) electrode strip 221 and the second (+) electrode strip 220 with respect to the electrode strip 211 is preferable. Do.
  • the wire connector 202 may include a tape forming an outer surface, a metal terminal 250 disposed inside the tape and fixed to ends of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211, and It includes a rivet 254 for fixing the metal terminal 250.
  • the wire connection part 202 is positioned at one end of the planar heating body 201.
  • a rectangular tape is attached to both ends of one end of the planar heating body 201.
  • (+) wire 240 and the (-) wire 241 is coupled to the inside of the wire connecting portion 202.
  • rectangular metal terminals 250 are fixed to ends of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211.
  • the positive wire 240 and the negative wire 241 are fixed to the metal terminal 250.
  • the positive wire 240 and the negative wire 241 are preferably fixed to the metal terminal 250 by soldering.
  • the metal terminal 250 may include a first terminal portion 251 having one surface bonded to an end of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211.
  • the second terminal part 252 is connected to and fixed to the other surface of the first terminal part 251 to be connected to and fixed to the (+) wire 240 and the (-) wire 241.
  • the first terminal portion 251 and the second terminal portion 252 overlap each other in contact with each other.
  • the first terminal portion 251 and the second terminal portion 252 have a rectangular plate shape.
  • first terminal portion 251 and the second terminal portion 252 is an end portion of the planar heating element body 201, that is, the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211. With a rivet 254 is penetrated and coupled together.
  • first terminal portion 251 and the second terminal portion 252 are fixed to the planar heating element body 201 by the rivet 254, the first (+) electrode strip 210 and the first (-) It is connected to the end of the electrode strip 211.
  • the first terminal portion 251, the second terminal portion 252 and the planar heating element body 201 is firmly coupled and there is an advantage that it is easy to manufacture.
  • One surface of the first terminal portion 251 is bonded to an end portion of the first (+) electrode strip 210 and the first ( ⁇ ) electrode strip 211 by an adhesive, and thus the bonding is more robust.
  • a rectangular tape is bonded to the outside of the wire connection portion 202 to form an outer surface.
  • the tape is glued so that one end of the positive wire 240 and the negative wire 241 and one end of the planar heating body 201 are covered.
  • the (+) wire 240 and (-) wire without the metal terminal 250 at the end of the first (+) electrode strip 210 and the first (-) electrode strip 211 After 241 is directly connected it can be fixed by tape. In this case, the manufacturing process has a simple advantage.
  • planar heating element 200 as described above is fixed to the outer surface of the ring-shaped case 150, it is possible to transfer heat uniformly to the inner pot, the electrical consumption efficiency is also improved.
  • the planar heating element 200 is excellent in thermal insulation power because the cooling rate is slow even when no electricity is applied. Therefore, there is an energy saving effect.
  • FIGS. 12 and 13 A description will be given focusing on the parts that are different from the first embodiment.
  • the planar heating element 400 includes a first film layer 406 adjacent to the inner pot and a second film layer 408 disposed outside from the inner pot than the first film layer 406.
  • the resistance heating element pattern 410 is printed on the first film layer 406.
  • the heating process of the resistance heating element pattern 410 is as follows.
  • the wire connection terminal 470 is fixed by inserting the ends of the (+) wire 440 and the (-) wire 441.
  • the first film layer 406, which constitutes the planar heating element 400, serves to insulate the resistance heating element pattern 410, which is a heating element, since the resistance heating element pattern 410, which is a heating element, is printed on a thin film. do.
  • the first film layer 406 also has the form of a thin film, and serves to insulate the resistance heating element pattern 410 which is a heating element.
  • both the first film layer 406 and the second film layer 408 are thin films.
  • Planar heating element 400 is fixed surrounding the outer surface of the ring-shaped case 150.
  • the resistive heating element pattern 410 is a heating element. The amount of current flowing into the circuit increases.
  • the second embodiment of the present invention is characterized in that the resistance heating element patterns 410 printed on the first film layer 406 of the planar heating element are overlapped with each other.
  • the resistance heating element pattern 410a positioned at the outermost side of the planar heating element 400 and the resistance heating element pattern 410b positioned at the outermost side of the planar heating element 400 are formed to overlap each other with respect to the length direction of the planar heating element 400. .
  • the portions of the first film 406 are mutually non-overlapping. Can overlap.
  • one end 402a and the other end 402b of the planar heating element including the first film 406 may overlap each other.
  • one end 402a of the planar heating element and the resistance heating element pattern 410a located at the outermost side of the planar heating element 400 are spaced apart to have a predetermined distance.
  • the other end 402b of the planar heating element and the resistance heating element pattern 410b located at the outermost side of the planar heating element 400 are also spaced apart to have a predetermined distance.
  • the resistance heating element patterns 410 may be prevented from overlapping each other.
  • a portion of the planar heating element 400 may overlap each other, but the resistance heating element located at the outermost side of the planar heating element 400 and the resistance heating element located at the outermost side of the planar heating element 400.
  • the patterns 410b do not overlap each other.
  • the resistance heating element pattern 410a is positioned at a distance from one end 402a of the planar heating element and behind the one end 402a of the planar heating element.
  • the resistance heating element pattern 410b is located behind the other end 402b of the planar heating element.
  • one end 402a of the planar heating element and the resistance heating element pattern 410a located at the outermost side of the planar heating element 400 are spaced apart by a predetermined distance, and the other end 402b of the planar heating element and the other side of the planar heating element 400. Since the outermost resistance heating element patterns 410b are spaced apart by a predetermined distance, even if a part of the planar heating elements 400 overlap, the outermost resistance heating elements patterns 410a and 410b do not overlap each other.
  • the planar heating element for non-overlapping of the resistance heating element pattern 410a located at the outermost side of the planar heating element 400 and the resistance heating element pattern 410b located at the outermost side of the planar heating element 400 One end 402a and the other end 402b may be spaced apart from each other to have a predetermined distance, or one end 402a and the other end 402b of the planar heating element may be configured to contact each other.
  • the first film layer 406 of the planar heating element is brought into contact with each other.
  • the printed resistance heating element pattern 410 does not overlap.
  • the resistance heating element pattern 410a positioned at the outermost side of the planar heating element 400 and the resistance heating element pattern 410b positioned at the outermost side of the planar heating element do not overlap each other, the first thin thickness in the cooking or warming process is performed.
  • the phenomenon in which the current flowing through the resistance heating element pattern 410 printed on the film 406 is rapidly increased may be prevented, so that the resistance heating element pattern 410 may be burned out or damaged by heat.
  • the outer surface (upper surface in Figure 12) of the second film layer 408 further includes a heat insulating member 480, the heat insulating effect is improved.
  • the heat insulating member 480 may be a metal tape.
  • the ring-shaped case 150 not only generates heat evenly, but also has excellent thermal insulation effect.
  • the insulating member 480 serves to protect the planar heating element 400.
  • the adhesive tape 490 is laminated on the inner surface (lower surface in FIG. 12) of the first film layer 406.
  • the adhesive tape 490 serves to fix the planar heating element 400 in contact with the outer surface of the ring-shaped case 150.
  • step 150 ring-shaped case
  • planar heating element body 202 wire connection
  • first film layer 208 second film layer
  • first (+) electrode strip 211 first (-) electrode strip
  • heating layer 240 (+) wire
  • first film layer 408 second film layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Resistance Heating (AREA)

Abstract

La présente invention concerne une structure de fixation d'élément chauffant planaire pour un cuiseur à riz électrique, ladite structure de fixation comportant un élément chauffant planaire fixé sur la surface externe d'un boîtier de type anneau prévu sur la partie supérieure du côté interne d'une base pour chauffer un récipient interne.
PCT/KR2016/001691 2015-12-02 2016-02-22 Structure de fixation d'élément chauffant planaire pour cuiseur à riz électrique WO2017094968A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020150170529A KR102377828B1 (ko) 2015-12-02 2015-12-02 전기밥솥용 면상발열체의 고정구조
KR10-2015-0170529 2015-12-02
KR10-2015-0181058 2015-12-17
KR1020150181058A KR20170072638A (ko) 2015-12-17 2015-12-17 전기밥솥

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