WO2017094968A1 - Planar heating element fixing structure for electric rice cooker - Google Patents

Planar heating element fixing structure for electric rice cooker 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
Other languages
French (fr)
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/en
Priority claimed from KR1020150181058A external-priority patent/KR20170072638A/en
Application filed by 주식회사 대유위니아 filed Critical 주식회사 대유위니아
Publication of WO2017094968A1 publication Critical patent/WO2017094968A1/en

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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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater 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

Abstract

The present invention relates to a planar heating element fixing structure for an electric rice cooker, the fixing structure having a planar heating element fixed to the outer surface of a ring-type case provided at the top of the inner side of a base for heating an inner pot.

Description

전기밥솥용 면상발열체의 고정구조Fixed Structure of Planar Heating Element for Electric Rice Cooker
본 발명은 베이스의 내측 상부에 설치되는 링형 케이스의 외면에 면상발열체가 고정되는 전기밥솥용 면상발열체의 고정구조에 관한 것이다.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.
일반적으로, 전기 압력 밥솥 및 전기밥솥은 밥을 지을 수 있는 취사기능과, 취사된 밥을 일정온도로 유지시켜 줄 수 있는 보온기능을 선택적으로 수행할 수 있도록 된 장치이다.In general, 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.
이러한 전기 압력 밥솥 및 전기밥솥은 본체의 상부에 증기 배출공이 형성된 뚜껑이 개폐 가능하게 설치되고, 상기 본체의 내부에는 내솥이 착탈 가능하게 내장되며, 이 내솥을 덮을 수 있도록 내솥 뚜껑이 별도로 구비되고, 본체 내에는 상기 내솥에 수용된 조리 대상물, 즉 쌀이나 잡곡, 기타 음식재료에 열을 전달하여 조리할 수 있도록 하는 유도 가열 방식 또는 열판 방식의 히터가 구비된다.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.
전기 압력 밥솥은 본체 내부를 밀폐할 수 있는 록킹수단과, 본체 내부의 증기 배출을 조절하는 증기배출밸브(솔레노이드밸브)가 구비된다.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.
한편, 도 1에는 한국공개특허 제2004-0081909호의 도 1에 도시된 종래의 일반적인 유도가열원리를 이용한 전기밥솥(전기압력밥솥)을 나타내었다. 유도가열원리를 이용한 전기밥솥은 열판가열방식을 이용한 전기밥솥과 달리 내솥의 외주면을 가열할 수 있는 장점이 있다.On the other hand, 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.
도 1과 같이, 종래의 유도가열원리를 이용한 전기밥솥은, 제품의 본체(1)와 본체(1)를 개폐시키기 위한 커버(2)로 크게 구성된다. 본체(1)의 내부에는 내솥(11)이 착탈 가능하게 설치되며, 내솥(11)의 외주면에는 내솥(11)을 유도가열시키기 위한 워킹코일(13)이 설치된다.As shown in Figure 1, 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.
그리고 워킹코일(13)과 내솥(11)의 사이에는 코일베이스(15)가 게재되어 워킹코일(13)을 지지한다. 코일베이스(15)는, 유도가열된 내솥(11)의 열량이 외부로 방출되는 것을 방지하기 위하여, 내열성이 좋은 PET계열 수지 사출물이 주로 사용되고 있다.The coil base 15 is disposed between the working coil 13 and the inner pot 11 to support the working coil 13. In order to prevent the heat of the induction-heated inner pot 11 from being discharged to the outside, the coil base 15 is mainly used with a PET-based resin injection product having good heat resistance.
그리고 내솥(11)의 측면 상부에는 링케이스(21)가 부착되고, 링케이스(21)의 외측면에 설치되어 전원을 공급받아 작동하면서 링케이스(21)를 가열시키는 케이스히터코일(23)이 구성된다. 케이스히터코일(23)은 취사완료 후 주로 보온시 동작하게 되고 때로는 가열시 보조열원으로 사용되기도 한다.And the ring case 21 is attached to the upper side of the inner pot 11, 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.
그러나 종래에는 선형의 케이스히터코일이 링케이스를 가열시키므로, 국부적으로 내솥으로 열을 전달할 뿐 균일한 열 전달이 이루어지지 않고, 전기소비효율도 낮으며, 케이스히터코일의 작동이 멈추면 냉각이 빠르게 되어 뚜꺼운 단열재 부착이 요구되는 문제점이 있다.However, in the related art, 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.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
한국공개특허 제2004-0081909호Korean Patent Publication No. 2004-0081909
본 발명은 전술한 문제를 해결하기 위하여 안출된 것으로, 내솥으로 균일하게 열을 전달하며 전기밥솥의 전기소비효율을 향상시킬 수 있는 전기밥솥용 면상발열체의 고정구조를 제공함에 그 목적이 있다.The present invention has been made in order to solve the above-mentioned problems, 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.
또한, 링형 케이스의 외면에 고정되는 면상발열체의 과열 및 훼손을 방지하는 전기밥솥용 면상발열체의 고정구조를 제곰함에 그 목적이 있다.In addition, its purpose is to provide a fixed structure of the 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.
전술한 문제를 해결하기 위하여, 본 발명의 전기밥솥용 면상발열체의 고정구조는, 내솥을 가열하는 베이스의 내측 상부에 설치되는 링형 케이스; 상기 링형 케이스의 외면에 고정되는 면상발열체; 를 포함한다.In order to solve the above problems, 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.
또한, 상기 면상발열체의 외면에 단열부재를 포함한다.In addition, the outer surface of the planar heating element includes a heat insulating member.
또한, 상기 단열부재는 금속재질의 테이프인 것을 특징으로 한다.In addition, the insulating member is characterized in that the metal tape.
또한, 상기 면상발열체는 외주에 띠를 둘러 상기 링형 케이스의 외면에 고정되는 것을 특징으로 한다.In addition, the 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.
또한, 상기 면상발열체는 테이프에 의해 상기 링형 케이스의 외면에 고정되는 것을 특징으로 한다.In addition, the planar heating element is characterized in that fixed to the outer surface of the ring-shaped case by a tape.
또한, 상기 면상발열체는 상기 링형 케이스의 외주면을 따라 배치되는 것을 특징으로 한다.In addition, the planar heating element is characterized in that it is disposed along the outer peripheral surface of the ring-shaped case.
또한, 상기 면상발열체는 상기 내솥에 인접하며, 저항 발열체 패턴이 인쇄된 제1필름층을 포함하되, 상기 면상발열체의 길이 방향을 기준으로 상기 면상발열체의 일측 최외곽에 위치한 저항 발열체 패턴과 상기 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴이 서로 비겹침되는 것을 특징으로 한다.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.
또한, 상기 면상발열체의 일단과 이와 소정거리를 갖도록 이격되며 상기 면상발열체의 일측 최외곽에 위치한 상기 저항 발열체 패턴과의 사이와 상기 면상발열체의 타단과 이와 소정거리를 갖도록 이격되며 상기 면상 발열체의 타측 최외곽에 위치한 상기 저항 발열체 패턴과의 사이는 서로 겹치는 것을 특징으로 한다.In addition, 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.
또한, 상기 면상발열체의 일단과 타단은 서로 소정거리를 갖도록 이격되거나, 서로 맞닿는 것을 특징으로 한다. In addition, 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.
본 발명에 의하면 다음과 같은 효과가 있다.According to the present invention has the following effects.
링형 케이스의 외면에 면상발열체가 위치하여, 내솥으로 균일하게 열을 전달할 수 있고, 전기소비효율도 향상된다. 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.
또한, 면상발열체의 발열층은 전기인가가 없을 경우에도 냉각되는 속도가 느려서 보온력이 우수하다. 따라서 에너지절감효과가 있다.In addition, 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.
또한, 면상발열체의 외면에 단열부재를 포함하여, 링형 케이스 외측의 단열층의 두께에 대해 단열 성능이 향상된다.In addition, by including a heat insulating member on the outer surface of the planar heating element, the heat insulating performance is improved with respect to the thickness of the heat insulating layer outside the ring-shaped case.
또한, 띠 또는 테이프를 통해 면상발열체가 링형 케이스의 외면에 균일하게 분포되도록, 용이하게 고정할 수 있다.In addition, the planar heating element can be easily fixed to the outer surface of the ring-shaped case through a strip or tape.
또한, 면상발열체, 구체적으로는 제1필름층에 인쇄된 저항 발열체 패턴이 서로 겹쳐지지 않으므로, 과도한 전류의 흐름을 방지할 수 있어 면상발열체가 과열 및 훼손되지 않는다.In addition, the 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.
도 1은 종래의 유도가열밥솥을 나타낸 단면도.1 is a cross-sectional view showing a conventional induction heating rice cooker.
도 2는 본 발명의 바람직한 실시예에 따른 베이스, 링형 케이스 및 면상발열체의 단면도.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.
도 3은 도 2의 분해 사시도.3 is an exploded perspective view of FIG. 2;
도 4는 제1실시예에 따른 면상발열체가 펼쳐진 사시도.4 is a perspective view showing the planar heating element according to the first embodiment.
도 5는 도 4의 A_A단면도.5 is a cross-sectional view taken along the line A_A of FIG.
도 6은 제1실시예에 따른 면상발열체의 전극띠 및 발열층의 구조도.6 is a structural diagram of the electrode strip and the heating layer of the planar heating element according to the first embodiment.
도 7은 제1실시예에 따른 전선연결부의 내부 구조도.7 is an internal structure diagram of a wire connection part according to the first embodiment.
도 8은 제1실시예에 따른 전선과 전극띠의 결합부분을 도시한 단면도.8 is a cross-sectional view showing a coupling portion of an electric wire and an electrode strip according to the first embodiment.
도 9 내지 도 11은 링형 케이스에 대한 면상발열체의 배치구조(고정구조)를 도시한 단면도.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.
도 12는 본 발명의 바람직한 제2실시예에 따른 면상발열체의 분해 사시도.12 is an exploded perspective view of a planar heating element according to a second embodiment of the present invention.
도 13은 제2실시예에 따른 링형 케이스 및 면상발열체의 확대 사시도.Figure 13 is an enlarged perspective view of the ring-shaped case and the planar heating element according to the second embodiment.
이하, 첨부한 도 2 내지 도 13을 참고하여 상세히 설명한다.Hereinafter, with reference to the accompanying Figures 2 to 13 will be described in detail.
먼저, 도 2 내지 도 11을 참고하여 제1실시예를 설명한 후, 도 12 및 도 13을 참고하여 제1실시예와 구별되는 제2실시예에 대해 설명하도록 한다.First, the first embodiment will be described with reference to FIGS. 2 to 11, and then a second embodiment distinguished from the first embodiment will be described with reference to FIGS. 12 and 13.
본 발명의 바람직한 제1실시예에 따른 전기밥솥용 면상발열체의 고정구조는, 내솥을 가열하는 베이스(100)의 내측 상부에 설치되는 링형 케이스(150);와, 링형 케이스(150)의 외면에 고정되는 면상발열체(200); 를 포함한다.The fixing structure of the planar heating element for an electric rice cooker according to the first embodiment of the present invention, 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.
전기밥솥은 밥솥본체와, 상기 밥솥본체에 힌지 결합 되어 상부를 개폐하는 뚜껑과, 상기 밥솥본체 내부에 설치되어 내솥을 가열하는 베이스(100); 베이스(100)의 내측 상부에 설치되는 링형 케이스(150)를 포함한다.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.
전기밥솥에 대해서는 전술한 종래기술을 비롯하여 한국공개특허 제2002-0067848호, 한국등록특허 제0997758호 등 종래에 많이 공지되어 있다. 따라서, 자세한 설명은 생략하기로 하고, 이하에는 베이스(100), 링형 케이스(150) 및 면상발열체(200)에 대해 상술하도록 한다.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.
본 설명은 도 2, 도 4 내지 도 6의 도시한 좌표를 따라 설명한다.This description will be described along the coordinates shown in FIGS. 2 and 4 to 6.
베이스(100)는 도 2 내지 도 3의 도시한 바와 같이, 상부가 개방되고 대략 반원 형상을 가진다.The base 100 is open at the top and has a substantially semi-circular shape, as shown in FIGS.
베이스(100)는 상기 밥솥본체의 내부에 설치되며, 베이스(100)의 내부에는 상기 내솥(미도시)이 착탈 가능하게 배치될 수 있다.The base 100 is installed inside the cooker body, and the inner pot (not shown) may be detachably disposed inside the base 100.
베이스(100)의 중앙부 및 하부에는 외주를 따라 코일(110)이 배치되어 베이스(100)에 열을 가한다. 그래서 상기 내솥을 가열시키게 된다.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. Thus, the inner pot is heated.
그리고, 도 2에 도시한 바와 같이, 베이스(100)의 내측면에는 단턱(120)이 형성되어 있다. 링형 케이스(150)는 베이스(100)의 내측 상부에 끼워져, 단턱(120)의 상단에 올려진다. And, as shown in Figure 2, 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.
또한, 링형 케이스(150)와 베이스(100)는 일체로 형성될 수 있다.In addition, the ring-shaped case 150 and the base 100 may be integrally formed.
링형 케이스(150)는 도 2 내지 도 3에 도시한 바와 같이, 중심이 상하 관통된 원형 링 형상으로 형성된다.As shown in FIGS. 2 and 3, the ring-shaped case 150 is formed in a circular ring shape with a center penetrating up and down.
그리고 링형 케이스(150)의 상단 외주 및 하단 외주에는, 외측으로 돌출되고 중공인 원형 돌출부(151)가 각각 형성된다.In addition, 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.
링형 케이스(150)의 하단에 위치한 원형 돌출부(151)는 단턱(120) 위에 올려진다.The circular protrusion 151 located at the bottom of the ring-shaped case 150 is mounted on the stepped portion 120.
이하에는 링형 케이스(150)의 외주면에 고정되는 면상발열체(200)에 대해 상술한다.Hereinafter, the planar heating element 200 fixed to the outer circumferential surface of the ring-shaped case 150 will be described in detail.
본 발명의 면상발열체(200)는 전기압력밥솥 및 그 외 전기밥솥에 적용 가능하다. 또한, 본 실시예에서는 전자유도(IH)가열방식으로 설명했지만, 열판가열 방식 전기밥솥에도 모두 적용 가능하다.The planar heating element 200 of the present invention is applicable to electric pressure cookers and other electric rice cookers. In addition, in the present embodiment, but described by the electromagnetic induction (IH) heating method, it is also applicable to both hot plate heating electric rice cooker.
면상발열체(200)는 도 2에 도시한 바와 같이, 일면이 링형 케이스(150)의 외면에 접하여 고정된다. 면상발열체(200)의 일면은 링형 케이스(150)의 외면에 양면 테이프 등에 의하여 고정될 수 있다.As shown in FIG. 2, 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.
본 발명의 전기밥솥용 면상발열체(200)의 고정구조는 배치구조 및 내부구조 등을 모두 포함하는 개념이나, 아래 설명에서는 전기밥솥용 면상발열체(200)의 배치구조 및 내부구조를 별도로 지칭하여 설명하도록 한다.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.
본 발명의 바람직한 제1실시예에 따른 전기밥솥용 면상발열체(200)는 도 4에 도시한 바와 같이, 상하 높이에 비해, 좌우 길이가 길게 형성된 띠 형상을 이룬다.The planar heating element 200 for an electric rice cooker according to the first preferred embodiment of the present invention, as shown in FIG.
그래서 전기밥솥용 면상발열체(200)의 배치구조 제1실시예로서, 도 9에 도시한 바와 같이, 면상발열체(200)는 링형 케이스(150)의 외주면을 따라 배치된다.Thus, as a first embodiment of the arrangement structure of the planar heating element 200 for an electric rice cooker, as shown in Figure 9, the planar heating element 200 is disposed along the outer peripheral surface of the ring-shaped case 150.
즉, 도 3에 도시한 바와 같이, 면상발열체(200)의 양단이 결합된 원형 링 형상을 이룬다. 그래서 링형 케이스(150)의 외주면에 균일하게 열을 전달할 수 있다.That is, as shown in Figure 3, both ends of the planar heating element 200 forms a circular ring shape combined. Thus, heat can be uniformly transferred to the outer circumferential surface of the ring-shaped case 150.
또한, 면상발열체(200)의 배치구조 제2실시예는, 도 10에 도시한 바와 같이, 면상발열체(200)가 링형 케이스(150)의 외주면을 따라 복수개가 이격 배치된다. 그래서 재료를 절감할 수 있는 효과가 있다.In addition, 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.
또한, 면상발열체(200)의 배치구조 제3실시예는, 도 11에 도시한 바와 같이, 면상발열체(200)가 링형 케이스(150)의 외주면에 상하 방향으로 다중 배치된다. 배치구조 제3실시예는 링형 케이스(150)의 높이에 비해 면상발열체(200)의 높이가 작을 경우에 유용하다.In addition, in the third embodiment of the arrangement structure of the planar heating element 200, as shown in FIG. 11, 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.
이상과 같이 면상발열체(200)와 링형 케이스(150)의 크기 비율에 따라, 면상발열체(200)를 링형 케이스(150)의 외주면에 다양한 형태로 용이하게 배치할 수 있다.According to the size ratio of the planar heating element 200 and the ring-shaped case 150 as described above, the planar heating element 200 can be easily arranged in various forms on the outer peripheral surface of the ring-shaped case 150.
이하에는 전기밥솥용 면상발열체(200)의 고정방법을 설명한다.Hereinafter, a method of fixing the planar heating element 200 for an electric rice cooker will be described.
본 발명의 전기밥솥용 면상발열체(200)의 고정방법의 제1실시예는, 면상발열체(200)가 링형 케이스(150)의 외면에 접착제로 고정된다. 즉, 면상발열체(200)의 일면에 접착제를 도포하여 링형 케이스(150)의 외면에 접착 고정시킨다.In the first embodiment of the fixing method of the planar heating element 200 for an electric rice cooker of the present invention, 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.
전기밥솥용 면상발열체(200)의 고정방법의 제2실시예는, 면상발열체(200)의 외주에 띠를 둘러, 링형 케이스(150)의 외면에 고정한다. 즉, 띠를 통해 링형 케이스(150)의 외면에 압착 고정된다.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.
전기밥솥용 면상발열체(200)의 고정방법의 제3실시예는, 테이프에 의해 면상발열체(200)를 링형 케이스(150)의 외면에 고정된다. 즉, 면상발열체(200)를 링형 케이스(150)의 외면에 접촉시킨 후, 테이프를 붙여 고정한다.In the third embodiment of the method for fixing the planar heating element 200 for an electric rice cooker, 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.
이상과 같은 고정방법을 통해 면상발열체(200)가 링형 케이스(150)의 외면에 균일하게 분포되도록, 용이하게 고정할 수 있다.Through the fixing method described above, the planar heating element 200 can be easily fixed to be uniformly distributed on the outer surface of the ring-shaped case 150.
한편, 본 발명의 제1실시예에 따른 전기밥솥용 면상발열체(200)는 도 3 내지 도 8에 도시한 바와 같이, 상기 내솥, 즉 링형 케이스(150)에 인접한 제1필름층(206) 및 제1필름층(206)보다 내솥, 즉 링형 케이스(150)로부터 외측에 배치된 제2필름층(208)과, 제1필름층(206) 및 제2필름층(208) 사이에 나란히 배치되어 상하 방향으로 서로 이격된 제1(+)전극띠(210) 및 제1(-)전극띠(211)와, 제1(+)전극띠(210) 및 제1(-)전극띠(211) 사이에 배치되어, 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대해 이격된 발열층(230)을 포함한다. 그리고 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 서로 마주보는 방향으로 각각 제2(+)전극띠(220) 및 제2(-)전극띠(221)가 돌출되어 교대 배치되고, 발열층(230)과 접촉된다. 또한, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 일단이 연결된 (+)전선(240) 및 (-)전선(241)과, (+)전선(240) 및 (-)전선(241)의 타단에 결합되는 전선연결단자(270)를 포함한다.On the other hand, 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. Are protruded and alternately disposed, and are in contact with the heat generating layer 230. In addition, (+) 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. And a wire connection terminal 270 coupled to the other end of the 240 and the negative wire 241.
또한, 제2필름층(208)의 외면에 단열부재(280)를 더 포함하여, 단열 효과가 향상된다. 단열부재(280)는 금속재질의 테이프일 수 있다.In addition, by further including a heat insulating member 280 on the outer surface of the second film layer 208, the heat insulating effect is improved. The heat insulating member 280 may be a metal tape.
그래서 면상발열체(200)에 전기공급이 끊긴 후에도, 냉각되는 속도가 선형의 코일히터를 사용했을 경우보다 더 느리므로, 링형 케이스(150) 외주면에 고르게 발열할 뿐 아니라 단열효과도 더 우수하다. 이와 같이 면상발열체(200)의 단열효과가 우수하여, 면상발열체(200) 외측에 배치되는 단열재(300)의 두께를 줄이면서도, 링형 케이스(150) 외측의 단열 성능이 우수하다.Therefore, even after the power supply to the planar heating element 200 is cut off, since the cooling speed is slower than when using the linear coil heater, the ring-shaped case 150 not only generates heat evenly, but also has excellent thermal insulation effect. Thus, 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.
면상발열체(200)는 도 2에 도시한 바와 같이, 일면, 즉 제1필름층(206)이 링형 케이스(150)의 외면에 접하여 고정된다.As shown in FIG. 2, 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.
그래서 면상발열체(200)는 링형 케이스(150)의 외면과, 베이스(100)의 상부 내측면 사이에 배치된다.Thus, the 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.
그리고 면상발열체(200)의 외측에는 단열재(300)가 배치된다. 즉, 단열재(300)는 면상발열체(200)와 베이스(100)의 상부 내측면 사이에 위치되어 단열 효과를 향상시키므로, 링형 케이스(150) 외측의 단열 성능이 우수하다.And 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.
도 4에 도시한 바와 같이, 사각 띠 형상의 면상발열체몸체(201)와, 면상발열체몸체(201)의 일측에 형성된 전선연결부(202)와, 전선연결부(202)에 결합된 (+)전선(240) 및 (-)전선(241)과, 전선연결단자(270)를 포함하여 이루어진다.As shown in FIG. 4, 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.
전선연결단자(270)는 (+)전선(240) 및 (-)전선(241)의 단부가 삽입되어 고정된다. 면상발열체몸체(201)를 링형 케이스(150) 외주면에 둘러 고정한 후, (+)전선(240) 및 (-)전선(241)이 연결된 전선연결단자(270)를 전원부에 꽂아서 결합함으로써 전기를 용이하게 면상발열체몸체(201)에 통전시킬 수 있다.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.
즉, 면상발열체(200)를 링형 케이스(150)에 설치한 후, 전선연결단자(270)를 전원부에 꽂아 결합함으로써 쉽고 편리하게 전기를 통전시킬 수 있다.That is, after installing the planar heating element 200 in the ring-shaped case 150, by connecting the wire connecting terminal 270 to the power supply unit can be easily and conveniently energized.
도 5를 참고하여 면상발열체몸체(201)의 단면을 설명하도록 한다.A cross section of the planar heating body 201 will be described with reference to FIG. 5.
면상발열체(200)는 내솥, 즉 링형 케이스(150)에 인접하도록 밥솥본체 내측에 배치되는 제1필름층(206) 및 제1필름층(206)보다 내솥, 즉 링형 케이스(150)로부터 외측에 배치되는 제2필름층(208)을 포함한다.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.
그리고 제1필름층(206)과 제2필름층(208) 사이에 제1(+)전극띠(210) 및 제1(-)전극띠(211)가 상하 높이방향으로 서로 이격되어 배치된다. 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.
제1(+)전극띠(210) 및 제1(-)전극띠(211)는 외측면이 제2필름층(208)의 내측면에 접한다.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.
그리고 제2(+)전극띠(220)(도 5에 미도시) 및 제2(-)전극띠(221)의 외측면도 제2필름층(208)의 내측면에 접한다.In addition, 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.
또한, 전기가 인가되는 발열층(230)은 제1필름층(206)의 외측면에 접하도록 배치된다. 즉, 제1필름층(206)과 제2(-)전극띠(221) 사이에 배치된다.In addition, 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.
또한, 제2필름층(208)의 외면, 즉 외측면에는 단열부재(280)가 접하여 접착된다(도 7 참고).In addition, the outer surface, that is, the outer surface of the second film layer 208 is in contact with the adhesive (see Figure 7).
참고로, 도 5에는 면상발열체(200)의 단면배치 순서를 이해하기 쉽도록, 제1(+)전극띠(210), 제1(-)전극띠(211) 및 제2(-)전극띠(221)가 제1필름층(206)과 이격되도록 도시하였으나, 실제 면상발열체(200)는 제1필름층(206)부터 단열부재(280)까지 서로 압착되어, 제1(+)전극띠(210), 제1(-)전극띠(211), 제2(-)전극띠(221)의 내측면이 제1필름층(206)의 외측면과 접촉된다.For reference, in FIG. 5, 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. Although 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.
이하에는, 도 6을 참고하여 면상발열체(200)의 내부구조를 좀더 상세히 설명하도록 한다.Hereinafter, the internal structure of the planar heating element 200 will be described in more detail with reference to FIG. 6.
도 5에 도시한 바와 같이, 제1(+)전극띠(210) 및 제1(-)전극띠(211)는 제1필름층(206) 및 제2필름층(208) 사이에 배치된다. 또한, 도 6에 도시한 바와 같이, 제1(+)전극띠(210) 및 제1(-)전극띠(211)는 상하 높이 방향으로 서로 이격되어 길이방향으로 나란히 배치된다. As shown in FIG. 5, 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. In addition, as shown in FIG. 6, 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.
또한, 제1(+)전극띠(210) 및 제1(-)전극띠(211)는 제1필름층(206) 및 제2필름층(208)의 상하 높이 이내에 배치된다.In addition, the 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.
제1(+)전극띠(210) 및 제1(-)전극띠(211)는 상하높이가 좁고 좌우 길이가 긴 띠 형상으로 형성된다.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.
또한, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 서로 마주보는 방향으로 각각 제2(+)전극띠(220) 및 제2(-)전극띠(221)가 돌출된다.In addition, 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.
제2(+)전극띠(220) 및 제2(-)전극띠(221)는 각각 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대해 직교하도록 배치된다.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. .
그리고 제2(+)전극띠(220) 및 제2(-)전극띠(221)는 면상발열체(200)의 좌우 길이방향을 따라 일정한 이격거리를 두고 교대로 배치되어 발열층(230)에 접촉된다.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.
제2(+)전극띠(220)는 상단이 제1(+)전극띠(210)에 연결되어 있고, 하단이 발열층(230) 하측으로 돌출되도록 하측 방향으로 연장되어 형성된다.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.
제2(-)전극띠(221)는 하단이 제1(-)전극띠(211)에 연결되어 있고, 상단이 발열층(230) 상측으로 돌출되도록 상측 방향으로 연장되어 형성된다.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.
한편, 발열층(230)은 상하 이격된 제1(+)전극띠(210) 및 제1(-)전극띠(211) 사이에 배치되어 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대해 이격되어 있다.Meanwhile, 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.
발열층(230)은 상하 높이(d2)가, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 상하 높이(d5)보다 크다(d2 > d5). 그리고 길이 방향으로 따라 제1(+)전극띠(210) 및 제1(-)전극띠(211)와 평행하게 형성된다.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.
또한, 발열층(230)의 발열물질은 탄소로 구성되는 것이 바람직하다.In addition, the heat generating material of the heat generating layer 230 is preferably made of carbon.
탄소 재료는 높은 전기전도성, 열전도성, 내열성, 내식성, 내마모성 및 윤활성 등 전기적, 물리적 특성이 우수하여 그 중요성이 증대되고 있으며, 이에 대한 연구 또한 활발하다. 탄소 재료로 발열층(230)을 형성하면, 열전도도가 좋고 열팽창계수가 낮은 장점이 있으며, 열에 대한 내구성이 강하여 고온의 열을 발생시킬 수 있어 사용 용도가 광범위하다.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. When 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.
발열층(230)은 제2(+)전극띠(220) 및 제2(-)전극띠(221)를 통해 전기를 인가받아 발열된다.The heat generating layer 230 generates electricity by applying electricity through the second (+) electrode strip 220 and the second (-) electrode strip 221.
즉, 도 7과 같이, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 일측 단부에 각각 연결된 (+)전선(240) 및 (-)전선(241)을 통해 전기가 인가된다. 그리고 인가된 전기는 제2(+)전극띠(220) 및 제2(-)전극띠(221)를 거쳐 발열층(230)에 전송된다.That is, as shown in FIG. 7, 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.
한편, 도 6에 도시한 바와 같이, 인접하는 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 이격거리(d1)는, 발열층(230)의 상하 높이(d2)보다 크다(d1 > d2). 그래서 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 개수를 줄일 수 있어 재료 절감의 효과가 있다. On the other hand, as shown in Figure 6, 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.
즉, 링형 케이스(150)에 접촉되는 발열층(230)의 면적에 대해, 발열층(230)에 접촉되는 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 개수가 최적이다.That is, with respect to the area of the heat generating layer 230 in contact with the ring-shaped case 150, the second (+) electrode strip 220 and the second (-) electrode strip 221 in contact with the heating layer 230. The number is optimal.
인접하는 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 이격거리(d1)는, 발열층(230)의 상하 높이(d2)에 대해 1.5 내지 2배 범위 이내가 바람직하다.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.
또한, 인접하는 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 이격거리(d1)는, 제1(+)전극띠(210)의 상면과 제1(-)전극띠(211)의 하면 사이의 상하 높이(d3) 이상이다(d1 > d3). 그래서 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 개수를 줄일 수 있어 재료 절감의 효과가 있다. In addition, 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.
즉, 발열층(230)과 제1(+)전극띠(210)과 제1(-)전극띠(211)를 포함하는 상하높이에 대해, 발열층(230)에 접촉되는 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 개수가 최적이다.That is, the second (+) contacting the heating layer 230 with respect to the vertical height including the heating layer 230, the first (+) electrode strip 210, and the first (−) electrode strip 211. The number of electrode strips 220 and second (-) electrode strips 221 is optimal.
인접하는 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 이격거리(d1)는, 제1(+)전극띠(210)의 상면과 제1(-)전극띠(211)의 하면 사이의 상하 높이(d3)에 대해 1배 초과 내지 1.1배 이하 범위가 바람직하다.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.
또한, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 상하 높이(d5)는, 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 좌우폭(d4)과 동일하다(d5 = d4). 그래서 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 인가된 전기가 용이하게 제2(+)전극띠(220) 및 제2(-)전극띠(221)로 통전 된다.In addition, the vertical height d5 of the first (+) electrode strip 210 and the first (-) electrode strip 211 is the second (+) electrode strip 220 and the second (-) electrode strip ( 221 is the same as the left and right width d4 (d5 = d4). Therefore, the electricity applied to the first (+) electrode strip 210 and the first (-) electrode strip 211 is easily the second (+) electrode strip 220 and the second (-) electrode strip 221. Is energized.
또한, 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 발열층(230)의 이격거리(d7)는, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 상하 높이(d5)보다 크다(d7 > d5). 그래서 전기스파크가 튈 위험이 적다. In addition, 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.
제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 발열층(230)의 이격거리(d7)가, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 상하 높이(d5)에 비해 작을수록 전기스파크가 튈 위험이 높아진다.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.
제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 발열층(230)의 이격거리(d7)는, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 상하 높이(d5)에 대해 1배 초과 내지 1.2배 이하 범위가 바람직하다.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.
또한, 제2(+)전극띠(220) 및 제2(-)전극띠(221)의 길이는 발열층(230)의 상하 높이(d2)보다 크다. 그리고 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 제2(-)전극띠(221) 및 제2(+)전극띠(220)의 단부의 이격거리(d6)는, 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 발열층(230)의 이격거리(d7)보다 작다. In addition, 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. And 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.
그래서 제2(+)전극띠(220) 및 제2(-)전극띠(221)가 발열층(230)을 상하 방향으로 가로지르며 접촉되어, 발열층(230)에 상하 방향으로 균일한 전기 인가가 가능하다.Thus, 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.
제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 발열층(230)의 이격거리(d7)는, 제1(+)전극띠(210) 및 제1(-)전극띠(211)에 대한 제2(-)전극띠(221) 및 제2(+)전극띠(220)의 단부의 이격거리(d6)에 대해 1배 초과 내지 1.2배 이하 범위가 바람직하다.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.
이하에는 전선연결부(202)에 대해 상술한다.Hereinafter, the wire connection unit 202 will be described in detail.
전선연결부(202)는 외면을 이루는 테이프와, 테이프 내부에 배치되어 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 고정된 금속단자(250)와, 금속단자(250)를 고정시키는 리벳(254)을 포함하여 이루어진다.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.
도 4에 도시한 바와 같이, 전선연결부(202)는 면상발열체몸체(201)의 일단에 위치한다. 그래서 면상발열체몸체(201)의 일단부 양면에 사각 형상의 테이프가 접착된다.As shown in FIG. 4, the wire connection part 202 is positioned at one end of the planar heating body 201. Thus, a rectangular tape is attached to both ends of one end of the planar heating body 201.
그리고 전선연결부(202)의 내부에는 (+)전선(240) 및 (-)전선(241)이 결합 된다.And the (+) wire 240 and the (-) wire 241 is coupled to the inside of the wire connecting portion 202.
도 7 및 도 8에 전선연결부(202)의 내부 구조를 나타내었다.7 and 8 show the internal structure of the wire connecting portion 202.
도 7에 도시한 바와 같이, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에는 각각 사각 형상의 금속단자(250)가 고정된다. 그리고 금속단자(250)에는 (+)전선(240) 및 (-)전선(241)이 고정된다. (+)전선(240) 및 (-)전선(241)은 금속단자(250)에 납땜으로 고정되는 것이 바람직하다.As illustrated in FIG. 7, 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.
금속단자(250)는, 도 8에 도시한 바와 같이, 일면이 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 접착되는 제1단자부(251)와, 제1단자부(251)의 타면에 접하여 (+)전선(240) 및 (-)전선(241)이 연결되어 고정되는 제2단자부(252)를 포함하여 이루어진다. 그리고 제1단자부(251) 및 제2단자부(252)는 서로 접하여 중첩되어 있다. As illustrated in FIG. 8, 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.
제1단자부(251) 및 제2단자부(252)는 사각 판 형상을 가진다.The first terminal portion 251 and the second terminal portion 252 have a rectangular plate shape.
또한, 제1단자부(251) 및 제2단자부(252)의 일측은, 면상발열체몸체(201), 즉 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부와 함께 리벳(254)으로 관통되어 결합 된다.In addition, one side of the 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.
즉, 제1단자부(251) 및 제2단자부(252)의 일측은 리벳(254)에 의해 면상발열체몸체(201)에 고정되어, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 연결된다. That is, one side of the first terminal portion 251 and the second terminal portion 252 is 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.
리벳(254)을 통해 제1단자부(251), 제2단자부(252) 및 면상발열체몸체(201)가 견고히 결합 되며 제작도 용이한 장점이 있다.Through the rivet 254, 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.
그리고 제1단자부(251)의 일면은 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 접착제로 접착되어, 결합이 한층 더 견고하다.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.
그리고 전선연결부(202) 외부에는 사각 형상의 테이프가 접착되어 외면을 이룬다. 테이프는 (+)전선(240) 및 (-)전선(241)의 일단부 및 면상발열체몸체(201)의 일단부가 덮히도록 접착된다.And 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.
이상과 같은 금속단자(250)를 포함하여 제1(+)전극띠(210) 및 제1(-)전극띠(211)로 전기인가가 용이하다. 또한, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 (+)전선(240) 및 (-)전선(241)의 일단이 연결되고, (+)전선(240) 및 (-)전선(241)의 타단이 전선연결단자(270)에 연결되어 있어, 면상발열체(200)에 대한 전기 인가가 쉽고 사용이 편리하다.It is easy to apply electricity to the first (+) electrode strip 210 and the first (-) electrode strip 211 including the metal terminal 250 as described above. In addition, one ends of the (+) wire 240 and the (-) wire 241 are connected to ends of the first (+) electrode strip 210 and the first (−) electrode strip 211, and (+) The other end of the wire 240 and the (-) wire 241 is connected to the wire connection terminal 270, it is easy to apply electricity to the planar heating element 200 is easy to use.
한편, 또 다른 실시예로서, 제1(+)전극띠(210) 및 제1(-)전극띠(211)의 단부에 금속단자(250) 없이 (+)전선(240) 및 (-)전선(241)이 직접 연결된 후, 테이프에 의해 고정될 수 있다. 이 경우, 제작 공정이 간단한 장점이 있다.On the other hand, as another embodiment, 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.
이상과 같은 면상발열체(200)가 링형 케이스(150)의 외면에 고정되어, 내솥으로 균일하게 열을 전달할 수 있고, 전기소비효율도 향상된다. 또한, 면상발열체(200)는 전기인가가 없을 경우에도 냉각되는 속도가 느려서 보온력이 우수하다. 따라서 에너지절감효과가 있다.The 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. In addition, 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.
이하에는 도 12 및 도 13을 참고하여, 본 발명의 제2실시예에 대해 설명한다. 제1실시예와 구별되는 부분을 중심으로 설명하도록 한다.Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 12 and 13. A description will be given focusing on the parts that are different from the first embodiment.
면상발열체(400)는 내솥에 인접한 제1필름층(406) 및 제1필름층(406)보다 내솥으로부터 외측에 배치된 제2필름층(408)을 포함하여 이루어진다.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.
제1필름층(406)에는 저항 발열체 패턴(410)이 인쇄된다.The resistance heating element pattern 410 is printed on the first film layer 406.
저항 발열체 패턴(410)의 발열 과정은 다음과 같다.The heating process of the resistance heating element pattern 410 is as follows.
전선연결단자(470)는 (+)전선(440) 및 (-)전선(441)의 단부가 삽입되어 고정된다. The wire connection terminal 470 is fixed by inserting the ends of the (+) wire 440 and the (-) wire 441.
면상발열체몸체(401)를 링형 케이스(150) 외주면에 둘러 고정한 후, (+)전선(440) 및 (-)전선(441)이 연결된 전선연결단자(470)를 전원부에 꽂아서 결합함으로써 전기를 용이하게 면상발열체몸체(401)에 통전시킬 수 있다.After fixing the planar heating element body 401 to the outer circumferential surface of the ring-shaped case 150, electric power is facilitated by plugging the wire connection terminal 470 to which the (+) wire 440 and the (-) wire 441 are connected to the power supply. It is possible to energize the planar heating element body 401.
즉, 면상발열체(400)를 링형 케이스(150)에 설치한 후, 전선연결단자(470)를 전원부에 꽂아 결합함으로써 쉽고 편리하게 전기를 통전시킬 수 있다.That is, after installing the planar heating element 400 in the ring-shaped case 150, by connecting the wire connecting terminal 470 to the power supply unit can be easily and conveniently energized.
전술한 면상발열체(400)를 이루는 구성인 제1필름층(406)은 발열체인 저항 발열체 패턴(410)이 두께가 얇은 필름에 인쇄되어 있으므로, 발열체인 저항 발열체 패턴(410)을 절연하는 역할을 한다.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.
제1필름층(406) 역시 두께가 얇은 필름의 형태를 가지며, 발열체인 저항 발열체 패턴(410)을 절연하는 역할을 한다.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.
즉, 제1필름층(406)과 제2필름층(408)은 모두 두께가 얇은 필름이다.That is, both the first film layer 406 and the second film layer 408 are thin films.
면상발열체(400)는 링형 케이스(150)의 외면을 감싸며 고정된다. Planar heating element 400 is fixed surrounding the outer surface of the ring-shaped case 150.
면상발열체(400)를 링형 케이스(150)의 외면을 감싸며 고정할 때, 면상발열체의 제1필름층(406)에 인쇄된 저항 발열체 패턴(410)끼리 서로 겹칠 경우, 발열체인 저항 발열체 패턴(410)에 흐르는 전류의 양이 증가한다.When the planar heating element 400 is wrapped around and fixed to the outer surface of the ring-shaped case 150, when the resistive heating element patterns 410 printed on the first film layer 406 of the planar heating element overlap each other, the resistive heating element pattern 410 is a heating element. The amount of current flowing into the circuit increases.
이는 면상발열체(400)의 과열 및 훼손을 야기하며, 안전 규격에 위반될 수 있다.This causes overheating and damage of the planar heating element 400 and may violate safety standards.
이에 따라 본 발명의 제2실시예는 면상발열체의 제1필름층(406)에 인쇄된 저항 발열체 패턴(410)끼리 비겹침되는 것을 특징으로 한다.Accordingly, 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.
면상발열체(400)의 길이 방향을 기준으로 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)과 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴(410b)가 서로 비겹침되도록 형성한다.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. .
이때, 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)과 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴(410b)가 서로 비겹침되는 한 제1필름(406)의 일부는 서로 겹칠 수 있다.In this case, as long as 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 are overlapped with each other, the portions of the first film 406 are mutually non-overlapping. Can overlap.
즉, 도 13에 도시한 바와 같이 제1필름(406)을 포함하는 면상발열체의 일단(402a)과 타단(402b)이 서로 겹칠 수 있다.That is, as shown in FIG. 13, one end 402a and the other end 402b of the planar heating element including the first film 406 may overlap each other.
그러나, 면상발열체의 일단(402a)과 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)는 소정 거리를 갖도록 이격되어 있다.However, 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.
또한 면상발열체의 타단(402b)과 면상발열체(400)의 타측 최외곽에 위치한 저항 발열체 패턴(410b)도 소정거리를 갖도록 이격되어 있다.In addition, 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.
따라서 제1필름(406)이 포함되는 면상발열체의 일단(402a)과 타단(402b)이 서로 겹치더라도 저항 발열체 패턴(410)이 서로 겹쳐지는 것은 방지할 수 있다.Therefore, even if one end 402a and the other end 402b of the planar heating element including the first film 406 overlap each other, the resistance heating element patterns 410 may be prevented from overlapping each other.
즉, 도 13에 도시한 바와 같이, 면상발열체(400)의 일부가 서로 겹칠 수 있으나 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)과 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴(410b)은 서로 겹치지 않는다.That is, as shown in FIG. 13, 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.
면상발열체의 일단(402a)과 소정거리를 가지며, 면상발열체의 일단(402a)으로부터 뒤에 저항 발열체 패턴(410a)이 위치한다.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.
면상발열체의 타단(402b)와 소정거리를 가지며, 면상발열체의 타단(402b)로부터 뒤에 저항 발열체 패턴(410b)이 위치한다.It has a predetermined distance from the other end 402b of the planar heating element, and the resistance heating element pattern 410b is located behind the other end 402b of the planar heating element.
따라서, 면상발열체의 일단(402a)과 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)은 소정 거리만큼 이격되어 있고, 면상발열체의 타단(402b)과 면상발열체(400)의 타측 최외곽에 위치한 저항 발열체 패턴(410b)은 소정 거리만큼 이격되어 있으므로, 면상발열체(400)의 일부가 겹치더라도, 최외곽 저항 발열체 패턴(410a, 410b)는 서로 겹치지 않게 된다.Accordingly, 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.
본 발명의 제2실시예의 변형예로서 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)과 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴(410b)의 비겹침을 위해 면상발열체의 일단(402a)과 타단(402b)을 서로 소정거리를 갖도록 이격되거나, 면상발열체의 일단(402a)과 타단(402b)은 서로 맞닿도록 구성할 수 있다.As a modified example of the second embodiment of the present invention, 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.
면상발열체의 일단(402a)과 타단(402b)을 서로 소정거리를 갖도록 이격되거나, 면상발열체의 일단(402a)과 타단(402b)을 서로 맞닿도록 하면, 면상발열체의 제1필름층(406)에 인쇄된 저항 발열체 패턴(410)이 겹치지 않게 된다.When the one end 402a and the other end 402b of the planar heating element are spaced apart from each other by a predetermined distance or the one end 402a and the other end 402b of the planar heating element are brought into contact with 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.
이와 같이 면상발열체(400)의 일측 최외곽에 위치한 저항 발열체 패턴(410a)과 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴(410b)은 서로 겹치지 않게 하면, 취사 또는 보온 과정에서 두께가 얇은 제1필름(406)에 인쇄된 저항 발열체 패턴(410)에 흐르는 전류가 급격하게 증가하는 현상을 방지할 수 있어 저항 발열체 패턴(410)이 타버리거나 열에 의한 훼손 등을 방지할 수 있다. As such, when 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.
한편, 제2필름층(408)의 외면(도 12에서 상면)에는 단열부재(480)를 더 포함하여, 단열 효과가 향상된다. 단열부재(480)는 금속재질의 테이프일 수 있다.On the other hand, 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.
즉, 면상발열체(400)에 전기공급이 끊긴 후에도, 냉각되는 속도가 선형의 코일히터를 사용했을 경우보다 더 느리므로, 링형 케이스(150) 외주면에 고르게 발열할 뿐 아니라 단열효과도 더 우수하다. That is, even after the power supply to the planar heating element 400 is cut off, since the cooling speed is slower than when the linear coil heater is used, the ring-shaped case 150 not only generates heat evenly, but also has excellent thermal insulation effect.
또한 단열부재(480)는 면상발열체(400)를 보호하는 역할을 수행한다.In addition, the insulating member 480 serves to protect the planar heating element 400.
한편 제1필름층(406)의 내면(도 12에서 하면)에는 점착용 테이프(490)가 적층된다.On the other hand, the adhesive tape 490 is laminated on the inner surface (lower surface in FIG. 12) of the first film layer 406.
점착용 테이프(490)는 면상발열체(400)를 링형 케이스(150)의 외면에 접하여 고정시키는 역할을 한다.The adhesive tape 490 serves to fix the planar heating element 400 in contact with the outer surface of the ring-shaped case 150.
본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 됨을 부언한다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are intended to be within the scope of the claims.
[부호의 설명][Description of the code]
100: 베이스 110: 코일100: base 110: coil
120: 단턱 150: 링형 케이스120: step 150: ring-shaped case
151: 원형돌출부 200: 면상발열체151: circular protrusion 200: planar heating element
201: 면상발열체몸체 202: 전선연결부201: planar heating element body 202: wire connection
206: 제1필름층 208: 제2필름층206: first film layer 208: second film layer
210: 제1(+)전극띠 211: 제1(-)전극띠210: first (+) electrode strip 211: first (-) electrode strip
220: 제2(+)전극띠 221: 제2(-)전극띠220: second (+) electrode strip 221: second (-) electrode strip
230: 발열층 240: (+)전선230: heating layer 240: (+) wire
241: (-)전선 250: 금속단자241: (-) wire 250: metal terminal
251: 제1단자부 252: 제2단자부251: first terminal portion 252: second terminal portion
254: 리벳 260: 테이프254: rivet 260: tape
270: 전선연결단자 280: 단열부재270: wire connection terminal 280: insulating member
300: 단열재 400: 면상발열체300: heat insulating material 400: planar heating element
406 : 제1필름층 408 : 제2필름층406: first film layer 408: second film layer
410 : 저항 발열체 패턴410: resistance heating element pattern
410a : 면상발열체의 일측 최외곽에 위치한 저항 발열체 패턴410a: Resistance heating element pattern located at the outermost side of the planar heating element
410b : 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴410b: Resistance heating element pattern located at the outermost side of the planar heating element
480 : 단열부재 490 : 점착용 테이프 480: heat insulating member 490: adhesive tape

Claims (9)

  1. 내솥을 가열하는 베이스의 내측 상부에 설치되는 링형 케이스;A ring-shaped case installed on an inner upper portion of the base for heating the inner pot;
    상기 링형 케이스의 외면에 고정되는 면상발열체; 를 포함하는 전기밥솥용 면상발열체의 고정구조.A planar heating element fixed to an outer surface of the ring-shaped case; Fixed structure of the surface heating element for an electric rice cooker comprising a.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 면상발열체의 외면에 단열부재를 포함하는 전기밥솥용 면상발열체의 고정구조.Fixed structure of the planar heating element for an electric rice cooker comprising a heat insulating member on the outer surface of the planar heating element.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 단열부재는 금속재질의 테이프인 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.The insulating member is a fixed structure of the planar heating element for an electric rice cooker, characterized in that the tape of the metal material.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 면상발열체는 외주에 띠를 둘러 상기 링형 케이스의 외면에 고정되는 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.The planar heating element is a fixed structure of the planar heating element for an electric rice cooker characterized in that the outer circumference around the strip is fixed to the outer surface of the ring-shaped case.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 면상발열체는 테이프에 의해 상기 링형 케이스의 외면에 고정되는 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.The planar heating element is a fixed structure of the planar heating element for an electric rice cooker, characterized in that fixed to the outer surface of the ring-shaped case by a tape.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 면상발열체는 상기 링형 케이스의 외주면을 따라 배치되는 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.The planar heating element is a fixed structure of the planar heating element for an electric rice cooker, characterized in that is disposed along the outer peripheral surface of the ring-shaped case.
  7. 청구항 1에 있어서,The method according to claim 1,
    상기 면상발열체는 상기 내솥에 인접하며, 저항 발열체 패턴이 인쇄된 제1필름층을 포함하되,The planar heating element is adjacent to the inner pot, and includes a first film layer printed with a resistance heating element pattern,
    상기 면상발열체의 길이 방향을 기준으로 상기 면상발열체의 일측 최외곽에 위치한 저항 발열체 패턴과 상기 면상발열체의 타측 최외곽에 위치한 저항 발열체 패턴이 서로 비겹침되는 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.The resistance heating element pattern located at the outermost side of the planar heating element and the resistance heating element pattern located at the outermost side of the planar heating element are non-overlapping with each other based on the length direction of the planar heating element. rescue.
  8. 청구항 7에 있어서,The method according to claim 7,
    상기 면상발열체의 일단과 이와 소정거리를 갖도록 이격되며 상기 면상발열체의 일측 최외곽에 위치한 상기 저항 발열체 패턴과의 사이와 상기 면상발열체의 타단과 이와 소정거리를 갖도록 이격되며 상기 면상 발열체의 타측 최외곽에 위치한 상기 저항 발열체 패턴과의 사이는 서로 겹치는 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.Spaced apart from one end of the planar heating element and a predetermined distance therebetween and spaced apart from the resistive heating element pattern located at the outermost side of the planar heating element and the other end of the planar heating element and a predetermined distance therefrom, and the outermost outer side of the planar heating element Fixed structure of the planar heating element for an electric rice cooker, characterized in that overlapping with each other located in the resistance heating element pattern.
  9. 청구항 7에 있어서,The method according to claim 7,
    상기 면상발열체의 일단과 타단은 서로 소정거리를 갖도록 이격되거나, 서로 맞닿는 것을 특징으로 하는 전기밥솥용 면상발열체의 고정구조.One end and the other end of the planar heating element is spaced apart from each other to have a predetermined distance, or a fixed structure of the planar heating element for an electric rice cooker, characterized in that abut.
PCT/KR2016/001691 2015-12-02 2016-02-22 Planar heating element fixing structure for electric rice cooker WO2017094968A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0170529 2015-12-02
KR1020150170529A KR102377828B1 (en) 2015-12-02 2015-12-02 Fixing of planar heat element for electric rice cooker
KR1020150181058A KR20170072638A (en) 2015-12-17 2015-12-17 Electric rice cooker
KR10-2015-0181058 2015-12-17

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