JP2007143804A - Food and drink heating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save the energy of a heating cooker; to reduce the manufacturing cost; and to thin an apparatus body. <P>SOLUTION: The heating cooker 1 is provided with cooking plates 5 and 6 for mounting a cooking object such as meat, heating sheets 7 and 8 disposed on the bottom sides of the cooking plates 5 and 6 and having conductor patterns 7a and 8a clampedly wired between a pair of insulating films 7b and 8b, and a power supply part 25 heating the heating sheets 7 and 8 by energizing the conductor patterns 7a and 8a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a food and beverage heating apparatus such as a heating cooker that cooks food and a heat retention device that keeps food and drink warm.

  A cooking device such as a hot plate that can easily cook meat and hot cakes in a general household on a cooking plate that is detachably mounted on a cooking device body case containing an electric heater. Is known (see, for example, Patent Document 1).

In this kind of food and beverage heating apparatus, as the electric heater, for example, a so-called seeds in which a pipe containing nichrome wire inside together with insulating powder for heat conduction is arranged meandering on the bottom side of the cooking plate. A heater or the like is applied.
JP 2002-291621 A

  However, the above-described sheathed heater requires a relatively large amount of preheating time, consumes a large amount of power, and is required to be improved in terms of power saving. Accordingly, there is a demand for developing a new heat source to replace the sheathed heater in order to reduce the thickness of the heating device and reduce the manufacturing cost itself.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a food and drink heating apparatus that can save power, reduce manufacturing costs, and reduce the thickness of the apparatus body.

  In order to achieve the above object, a food and beverage heating apparatus according to the present invention includes a heated portion in which a container containing food and drink or a food and beverage is placed, and a pair of insulations disposed at least on the bottom side of the heated portion. A heating member having a conductor pattern that is wired while being sandwiched between substrates, and a power supply unit that heats the heating member by energizing the conductor pattern.

  According to the present invention, since the heat generating member is constituted by the heat generating member that generates heat by energizing the conductive pattern sandwiched between the insulating substrates, that is, the sheet heat generating element having a high heat transfer effect, for example, a sheathed heater or the like In contrast, it is possible to raise the temperature of a heated portion where food or drink or a container for food or drink is placed with a relatively small amount of power consumption and in a short time, thereby realizing power saving. In addition, according to the present invention, a thin heat source can be easily formed by sandwiching the conductor pattern between the insulating substrates by using various printing techniques, etching, etc. Thinning can be achieved.

  Here, in this specification, food and drink includes foods such as meat and vegetables, foods that have already been cooked, and beverages such as water, hot water, and coffee. Moreover, the heating of food and drink by the food and drink heating device of the present invention includes cooking of food materials, keeping food and heating and heating foods, boiling foods, and the like. Furthermore, said to-be-heated part may have the site | part which contacts the side surface etc. of said container other than the site | part which contacts the bottom part of food and drink or the container of food and drink. In addition, in the case where the heated part has a portion that contacts the side surface of the container of food and drink, a heating member may also be provided on the side corresponding to the side surface of the container. Furthermore, in the present invention, the conductor pattern is wired while meandering along each inner side surface of the pair of insulating substrates, thereby providing a large number of heat generating portions over the entire inner surface of the insulating substrate as much as possible. It is possible to minimize the heat generation part). The same effect can be obtained even when the conductor pattern is wired in a crank shape with respect to each inner side surface of the pair of insulating substrates.

  Moreover, the food and drink heating apparatus according to the present invention includes a plurality of the heating members at a plurality of locations on the bottom side of the heated portion so that a plurality of heating regions having different temperatures are formed on the upper surface of the heated portion. It is characterized by being arranged in pieces.

  According to the present invention, for example, an area for cooking food and an area for keeping warm of already cooked food can be prepared on a single member constituting the heated portion. The use of the food and drink heating apparatus can be expanded. Here, the heated part having a placement portion on which food and drink (or a container for food and drink) is placed may be configured as, for example, a single plate or the like as its component configuration, or individually for each heating region It may be composed of a plurality of plates.

  Furthermore, the food and drink heating apparatus according to the present invention is a heat generation control unit that performs variable control of the heating temperature of the entire surface of the heated portion and / or variable control of the heating temperature for each of the plurality of heating regions on the surface of the heated portion. Is further provided.

  According to this invention, the optimal heating temperature can be provided with respect to object food and drink. Moreover, in this invention, when the temperature control for each of a plurality of heating regions on the upper surface of the heated portion is possible, for example, a plurality of types of foods having different cooking temperatures can be suitably cooked with one apparatus. it can.

  The food and beverage heating device of the present invention includes an AC power input interface corresponding to a commercial power source, a DC power input interface corresponding to a vehicle battery power, and a DC power input interface corresponding to a rechargeable battery. It is provided with at least one of them.

  In this invention, not only the use of a food and beverage heating apparatus using a commercial power source in a residence, but also from a general passenger car equipped with a DC 12V battery power source, for example, an off-road vehicle equipped with a DC 24V battery power source, etc. Therefore, the food and drink heating device can be used even in an outdoor environment such as a campsite. Here, the AC power supply input interface corresponding to the above-mentioned commercial power supply is not only an interface corresponding to AC100V in Japan, but also a commercial power supply in overseas countries such as AC110V, AC115V, AC120V, AC127V, AC220V, AC230V, AC240V, etc. The interface corresponding to is included.

  Furthermore, in this invention, if it is a food-and-drink heating apparatus provided with the interface for DC power supply input corresponding to a rechargeable battery, it can replace with a commercial power supply, a battery power supply, etc., and can apply a rechargeable battery. Moreover, in this invention, a portable (portable) food and drink heating device can be provided, and the convenience for the user can be improved. Further, in the present invention, the food and drink heating device may be configured to support all three types of power sources such as a commercial power source, a battery power source, and a rechargeable battery. Depending on the type of power source, such as a food and beverage heating device (for example, AC100V specification in Japan), a food power heating device for battery power (for example, DC12V) for automobiles, a food and beverage heating device for rechargeable battery, etc. You may comprise the food-drink heating apparatus which becomes.

  As described above, according to the present invention, it is possible to provide a food and beverage heating apparatus that can save power, reduce manufacturing costs, and reduce the thickness of the apparatus main body.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a plan view showing a heating cooker as a food and drink heating apparatus according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view showing the heating cooker, and FIG. FIG. 4 is a block diagram showing the input operation unit in detail, and FIG. 4 is a block diagram functionally showing the control system of the cooking device.

  As shown in FIG. 1 to FIG. 4, the heating cooker 1 of the present embodiment is a hot plate that can easily perform cooking such as grilled meat in a general household, and cooked items such as meat and hot cakes ( It is arranged on the bottom side of the cooking plates 5 and 6 and the cooking plates 5 and 6 as heated portions where food and drink are placed, and wired while being sandwiched between a pair of insulating films (insulating substrates) 7b and 8b. Heat generating sheets (heat generating members) 7 and 8 as planar heating elements having the conductor patterns 7a and 8a, and a power supply unit 25 that heats the heat generating sheets 7 and 8 by energizing the conductor patterns 7a and 8a. Prepare for.

  Specifically, as shown in FIGS. 1 and 2, the casing portion of the heating cooker 1 is formed of a support case 2. The cooking plates 5 and 6 are detachably mounted on the uppermost portion of the support case 2. One end and the other end of the conductor patterns 7a and 8a of the heat generating sheets 7 and 8 are connected to the power supply unit 25 via leads 9a, 10a, 9b and 10b, respectively.

  Between the insulating films 7b, 8b on the upper side of the heat generating sheets 7, 8 and the cooking plates 5, 6, an aluminum plate 12 for improving the thermal conductivity is interposed. Further, between the other insulating films 7b, 8b on the bottom side of the heat generating sheets 7, 8 and the support case 2, glass for suppressing heat dissipation to the bottom side of the heating cooker 1 in order from the inside. Wool 9 and, for example, an aluminum plate 16 are interposed.

For example, the heat generating sheets 7 and 8 are first formed on a predetermined base material by using etching or various printing techniques to form a conductor pattern 7a (or 8a), and then the conductor pattern is peeled off from the base material. For example, the conductor pattern is produced by attaching a pair of insulating films 7b (or 8b) from both sides. Further, the heat generating sheets 7 and 8 can also be produced by forming a conductor pattern on one insulating film of a pair of insulating films and then bonding the other insulating film. Examples of the insulating films 7b and 8b include heat-resistant materials such as polyimide resin, polyamideimide resin, polyester resin, mica, glass sheet, and ceramic paper. Further, instead of the insulating films 7b and 8b, the surface of a plate material (base material) such as titanium alloy, magnesium, or aluminum is coated with a ceramic coating such as Al ₂ O ₃ (alumina) by, for example, plasma oxidation treatment. It is also possible to apply a high heat resistance and high insulation substrate obtained by applying the above. Here, the above-mentioned plasma oxidation treatment is performed by pulse control to repeatedly dissolve and solidify the outermost surface layer of a base material such as aluminum by an ultrahigh voltage plasma discharge. It is the film formation process to obtain. The conductor patterns 7a and 8a are formed by patterning a metal foil such as a stainless steel foil, a copper foil, or a silver foil having a thickness of about 5 μm to 0.1 mm, for example. Examples of the technique for forming a pattern on the metal foil include various printing techniques, etching processing, press processing, wire cut processing, and laser cut processing. Moreover, such conductor patterns 7a and 8a are wired while meandering along each inner surface of a pair of insulating films 7b and 8b. Specifically, the conductor patterns 7a and 8a are formed in a pattern so that the entire inner surfaces of the insulating films 7b and 8b are wired as uniformly as possible. Thereby, it is possible to uniformly provide a heat generating portion over the entire inner surfaces of the insulating films 7b and 8b (suppressing the occurrence of temperature unevenness on the insulating films 7b and 8b as much as possible).

Next, the control system of the heating cooker 1 of this embodiment is demonstrated.
That is, as shown in FIG.3 and FIG.4, in addition to the above-mentioned electric power supply part 25, in addition to the above-mentioned electric power supply part 25, the control system of the heating cooker 1 and the heat generating sheet from the electric power supply part 25 and the electric power supply part 25 There is provided a heat generation control unit 21 that controls the heating temperature of the cooking plates 5 and 6 by controlling the supply of current to 7 and 8. The heat generation control unit 21 includes a timer 21a. For example, when the timer 21a detects the elapse of the set time set by the user through the input operation unit 3, the current from the power supply unit 25 to the heat generation sheets 7 and 8 is detected. Forcibly shuts off the supply. Here, for example, a thermistor may be attached to the heat generating sheets 7 and 8, and the heat generation control unit 21 may perform feedback control of the heating temperature based on the temperature of the heat generating sheets 7 and 8 detected by the thermistor.

  The power supply unit 25 is connected to a terminal unit 24 as an AC power supply input interface corresponding to AC 100 V so that the commercial power supply 23 can be supplied. Furthermore, in order to be able to supply the battery power supply 28 for automobiles to the power supply section 25, a terminal section 27 that is an interface for DC power supply input corresponding to DC24V and DC12V is provided via the DC-AC inverter 26. It is connected.

  The DC-AC inverter 26 converts the 24V / 12V direct-current power supplied from the battery power supply 28 side into a 100V alternating-current power supply, and supplies it to the power supply unit 25. The voltage setting switching unit 22 connected to the DC-AC inverter 26 selects conversion from DC 24 V to AC 100 V and conversion from DC 12 V to AC 100 V in accordance with an input operation from the user via the input operation unit 3. Run it.

  This configuration is not limited to the use of the commercial power source 23 in the heating cooker's residence, but also power from a general passenger car equipped with a DC 12V battery power source, for example, an off-road vehicle equipped with a DC 24V battery power source. It is to realize the supply of. With this configuration, the cooking device 1 of the present embodiment can be applied as a portable cooking device, and the cooking device 1 can be used even in an outdoor environment such as a campsite. Here, a dedicated connection cable for relaying and connecting the cigarette lighter socket (DC 12 V / DC 24 V output) on the vehicle side and the terminal portion 27 of the heating cooker 1 is provided as an accessory of the heating cooker 1. Also good. In addition, in a cooking device that uses a solid fuel that may be applied in an outdoor environment as a heat source, temperature control (for example, heat insulation) cannot be performed, and fuel is also burned, so safety is also a concern. In contrast, the heating cooker 1 of the present embodiment has solved these problems.

Next, the configuration of the input operation unit 3 will be described with reference to FIG.
As shown in FIG. 3, the input operation unit 3 includes a power switch 3a for switching ON / OFF of the drive power supplied to the main body of the cooking device 1, and heat generation (arranged on the right side of FIGS. 1 and 2). A temperature adjustment knob 3c for mainly adjusting the heating temperature of the cooking plate 6 located above the sheet 8 (adjusting the supply of electric power [current] to the conductor pattern 8a via the heat generation control unit 21); Prepare. Further, the input operation unit 3 mainly adjusts the heating temperature of the cooking plate 5 located above the heat generating sheet 7 (arranged on the left side of FIGS. 1 and 2) (conductor through the heat generation control unit 21). A temperature adjustment knob 3d for adjusting the supply of electric power [current] to the pattern 7a) and a division switch 3b for applying predetermined control to the heating temperature adjustment function by the temperature adjustment knobs 3c, 3d are provided.

  In the state where the above-described split switch 3b is set to OFF, the temperature adjustment function by the temperature adjustment knob 3d is disabled, and by operating the temperature adjustment knob 3c, both the heat generating sheets 7 and 8 are controlled, and cooking is performed. Both plates 5, 6 are adjusted to the same temperature.

  On the other hand, in the state where the division switch 3b is set to ON, the temperature adjustment function by the temperature adjustment knob 3d is effective, and only the heat generating sheet 7 is controlled by operating the temperature adjustment knob 3d, and the cooking plate 5 is unique. Is adjusted to the temperature. Further, in the state where the division switch 3b is set to ON, by operating the temperature adjustment knob 3c, only the heat generating sheet 8 is controlled, and the cooking plate 6 has a unique temperature (individual to the cooking plate 5). Temperature). Here, for example, by adjusting the temperature adjustment knobs 3c and 3d as appropriate, for example, the cooking plate 5 is set to 100 ° C. for heat insulation, and the cooking plate 6 is set to 200 ° C. for actual cooking, for example. Is possible.

Next, the test result of the heat generation characteristic of the heat generating sheet 7 provided in the heating cooker 1 of the present embodiment is shown in FIGS. Here, as the heat generating sheet 7 applied to the test, a stainless steel foil conductor pattern having a thickness of 35 μm, a width of 3 mm, and a resistance value of about 7Ω is applied to the conductor pattern 7a, and the surface of the conductor pattern 7a shown in FIG. The temperatures at measurement points A, B and C were directly measured. As measurement conditions, the temperature was measured every predetermined time with two input voltages of AC20V and AC25V in an environment of room temperature 28.2 ° C. and humidity 68%.
As is apparent from this measurement result, the temperature rise is almost stable after 2 minutes, so that the heating sheet of the heating cooker 1 of this embodiment is rapidly raised in temperature. It can be seen that the preheating time is not required.

  As already described, according to the heating cooker 1 of the present embodiment, the heat generating sheets 7 and 8 that generate heat by energizing the conductive patterns 7a and 8a sandwiched between the insulating films 7b and 8b, that is, the heat transfer effect is obtained. The heating source is composed of a planar heating element that is high and can be arranged closer to the bottom of the cooking plates 5 and 6, so that, for example, unlike a sheathed heater, the power consumption is relatively small. Moreover, the cooking plates 5 and 6 on which the food is placed can be heated in a short time, thereby realizing power saving. Further, according to the heating cooker 1 of the present embodiment, a thin heat generation in which a conductive pattern is sandwiched between insulating substrates using various printing techniques, etching processing, press processing, wire cutting processing, laser cutting processing, and the like. Since the source can be easily formed, the manufacturing cost of the apparatus main body can be reduced and the thickness thereof can be reduced.

  Moreover, in the heating cooker 1 of this embodiment, the heating area for actual cooking and the heating area for heat insulation can be prepared on the cooking plates 5 and 6, and with respect to one heating cooker. Can be expanded. Furthermore, according to the heating cooker 1 of this embodiment, since the temperature control for each of the cooking plates 5 and 6 is possible, for example, a plurality of types of foods with different cooking temperatures are suitably cooked with a single cooker. can do.

  Here, in this embodiment, it replaces with said heating cooker 1, and as shown in FIG. 7, the drink holder 35 can also be applied as the food-drinks heating apparatus of this invention. The drink holder 35 can be attached to the air outlet of an automobile air conditioner, and has a mounting claw portion 36 that fits into the air outlet, and a side surface holder that holds a side surface of a container such as a cup or a cup of coffee. A portion 37 and a bottom support portion 38 that supports the bottom portion of a container such as pipe coffee. Further, a heat generating sheet 39 having the same structure as the heat generating sheets 7 and 8 provided in the heating cooker 1 is built in the bottom support portion 38 of the drink holder 35. In other words, the drink holder 35 has a heat retaining function for retaining the pipe coffee or the like while keeping it warm. The drink holder 35 is preferably provided with an interface for direct current power input corresponding to the battery power source of the automobile.

  Further, the present invention may be applied to a thin heating device 40 as shown in FIG. The heating device 40 includes a heating stage 41 on which a pot 42 and the like are placed, and an input operation unit 44 that sets the heating temperature of the heating stage 41. Further, a heating sheet 43 having a structure similar to that of the heating sheets 7 and 8 is built in the bottom of the heating stage 41 of the heating device 40. That is, in the heating device 40, it is possible to boil the water put in the pot 42 or to keep the heated hot water warm.

  Furthermore, you may apply the food-drinks heating apparatus of this invention to the heating cooking pan 45, as shown in FIG. The cooking pan 45 includes a pan body 47, a lid 46, and a pan container 48 that houses the pan body 47 and covers the bottom and side surfaces of the pan body 47. Further, a heat generating sheet 49 having the same structure as the heat generating sheets 7 and 8 is built in the bottom of the pot container 48 of the cooking pan 45. That is, in the cooking pan 45, as in the cooking cooker 1, the pan body 47 can be heated in a short time with relatively small power consumption, and power saving can be achieved. In addition, you may make it incorporate a heat_generation | fever sheet | seat also in the side part of the pot container 48 facing the side surface of the pot main body 47 other than the bottom part of the pot container 48. FIG.

  It should be noted that the drink holder 35, the thin heating device 40, and the cooking pan 45 described in FIGS. 7 to 9 are respectively connected to an AC power input interface corresponding to a commercial power source and a DC power input corresponding to a battery power source of an automobile. And an interface for DC power input corresponding to the rechargeable battery may be provided.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 10 is a plan view showing a heating cooker as a food and drink heating device according to the second embodiment, FIG. 11 is a cross-sectional view showing this heating cooker, and FIG. It is a block diagram which shows a control system functionally. In addition, about the structure which has the function similar to the heating cooker 1 of 1st Embodiment in FIGS. 10-12, the same code | symbol is provided and the description is abbreviate | omitted.

  As shown in FIGS. 10-12, the heating cooker 51 of this embodiment replaces with the heat-generating sheets 7 and 8 of the heating cooker 1 of 1st Embodiment, PTC heating resistor 57c and 58c, and an electrode (Electrode layers) 57a, 57b and 58a, 58b are provided with heat-generating sheets 57 and 58 constituted by sandwiching the insulating films 7b and 8b from above and below, respectively.

  More specifically, the heat generating sheets 57 and 58 are composed of electrodes (electrode layers) 57a in a comb pattern using a material such as silver or copper on one surface (bottom surface in the present embodiment) of the PTC heat generating resistors 57c and 58c. 57b, 58a, 58b, and the PTC heating resistors 57c, 58c are sandwiched between a pair of insulating films 7b, 8b from both sides, for example, having a thickness (total thickness) of 0.01 mm to 2 mm. In the PTC heating resistors 57c and 58c, a printing pattern having a desired shape can be obtained by using various printing techniques.

  The PTC heating resistors 57c and 58c are made of PTC material, that is, a material having a positive temperature coefficient of resistance (Positive Temperature Coefficient of Resistance) and exhibiting PTC characteristics at 100 ° C. to 300 ° C. Is used for example. In the present embodiment, the PTC heating resistors 57c and 58c have the same PTC characteristics. Furthermore, specifically, as conductive particles in the inorganic polymer, nickel, copper, tungsten, titanium, silver, gold, aluminum, activated carbon, carbon black, graphite, tin oxide, indium oxide, vanadium oxide, rhenium oxide, An inorganic polymer-based PTC material in which silicon carbide, titanium nitride, or the like is dispersed is preferably used because a layer having good flexibility can be formed by screen printing. The single thickness of the PTC heating resistors 57c and 58c is, for example, about 5 μm to 1 mm.

  Further, instead of the above-described manufacturing method using printing technology, carbon is mixed in a predetermined resin material or heat-resistant material having PTC characteristics as described above, and this is rolled with a roller or the like, and is first formed into a sheet shape. Then, a PTC heating resistor having a thickness of, for example, about 50 μm to 5 mm may be formed by performing a punching process of cutting the base material into a predetermined shape. When this manufacturing method is adopted, the PTC heating resistor itself also has a function as an electrode. Therefore, in this case, the shape of the PTC heating resistor is on the surface facing the bottom surface of the cooking plates 5 and 6. The shape etc. which are made to meander along the side etc. are illustrated. Further, at this time, for example, one end portion of the PTC heating resistor arranged meandering serves as a positive electrode, and the other end portion serves as a negative electrode.

  Here, for example, by appropriately adjusting the temperature control knobs 3c and 3d, for example, the cooking plate 5 is set to 100 ° C. for heat insulation, and the cooking plate 6 is set to 200 ° C. for actual cooking, for example. Suppose. When a sheathed heater or the like is applied as a heat source for heating the cooking plates 5 and 6, generally, a power of, for example, about 1200 W + 1200 W may be required due to its structure. There are concerns about the breaker falling. However, in the heating cooker 51 of the present embodiment, the heat generating effect is high, and the heat generating sheets 57 and 58 having the PTC heat generating resistors 57c and 58c as the planar heat generating elements that can be disposed close to the heated portion are used as the heat generating sources. By applying, the power consumption of the heating cooker 51 as a whole can be suppressed to about 500 W, for example.

  Therefore, according to the heating cooker 51 of this embodiment, since it is comprised so that the cooking plates 5 and 6 may be heated through the heat generating sheets 57 and 58 as a planar heat generating body with a high heat-transfer effect, The cooking plates 5 and 6 can be heated to a predetermined temperature with low power consumption and in a short time, and power saving can be achieved. Further, in the heating cooker 51 of the present embodiment, the resistance value rapidly increases at a temperature equal to or higher than the Curie temperature of the PTC heating resistors 57c and 58c (the temperature at which the phase transition of the PTC heating resistors 57c and 58c occurs). Becomes difficult to flow, and the temperature rise of the PTC heating resistors 57c and 58c itself inevitably stops. That is, according to the heating cooker 51 of this embodiment, it is necessary to dare to provide a limiter circuit for heat generation such as a thermostat by such a self-temperature control function of the PTC heating resistors 57c and 58c of the heating sheets 57 and 58. As a result, costs can be reduced and safety during use of the cooker can be ensured.

  In addition, it replaces with the heat generating sheet 39 of the drink holder 35 demonstrated in FIGS. 7-9 of 1st Embodiment, the heat generating sheet 43 of the thin heating apparatus 40, and the heat generating sheet 49 of the heating cooking pan 45, and it is 2nd. The drink holder, the thin heating device, and the cooking pot may be configured by applying a heating sheet having the same structure as the heating sheets 57 and 58 having the PTC heating resistors 57c and 58c of the embodiment. Here, in the case of a drink holder, a space for installing a heat generation source cannot be made large. Therefore, as a suitable PTC heat generation resistor, carbon or the like is mixed into a resin material having PTC characteristics as described above. It is desirable to apply a PTC heating resistor obtained by pattern printing (printing on two layers) on a sheet-like base material and a current-carrying wiring. Note that, instead of printing the energization wiring pattern on the base material, a conductor foil such as a copper foil may be laminated on the sheet-like base material. In addition, each of these drink holders, thin heating devices and cooking pots supports an AC power input interface corresponding to commercial power, a DC power input interface corresponding to a car battery power, and a rechargeable battery. An interface for direct current power input may be provided.

  Although the present invention has been specifically described with reference to the first and second embodiments, the present invention is not limited to this embodiment, and various modifications can be made without departing from the scope of the present invention. For example, in the second embodiment, even if a temperature difference is provided between the cooking plate 5 and the cooking plate 6 by changing the amount of power supplied to a plurality of PTC heating resistors having the same PTC characteristics, respectively. Alternatively, a plurality of types of PTC heating resistors having different PTC characteristics (temperature characteristics) may be arranged in advance. Moreover, you may make it interpose a heat insulating material etc. between these plates so that transmission of the temperature between the plate 5 for cooking and the plate 6 for cooking may be reduced. Moreover, in the said embodiment, although the plate part for cooking was comprised by two plates, the plate 5 for cooking, and the plate 6 for cooking, it replaces with this and the plate for cooking by one plate A part may be comprised and a several heating area | region may be provided on this single plate.

  Furthermore, in the above-described embodiment, it is configured to support all three types of power sources such as AC100V, DC12V, and DC24V. Instead, the AC100V specification heating cooker and the DC12V specification heating cooker are used. In addition, a heating cooker that is a dedicated machine may be configured individually according to the type of power source, such as a DC24V specification cooking device. In this case, the DC-AC inverter 26 and the voltage setting switching unit 22 provided in the heating cooker are not necessary, and further, the terminal unit 24 for AC power supply input and the terminal unit 27 for DC power supply input are used. Any one of them becomes unnecessary, and the cost for configuring the cooking device can be reduced.

The top view which shows the heating cooker which concerns on the 1st Embodiment of this invention. Sectional drawing which shows the heating cooker of FIG. The figure which shows the input operation part of the heating cooker of FIG. 1 in detail. The block diagram which shows the control system of the heating cooker of FIG. 1 functionally. The heat generating sheet with which the heating cooker of FIG. 1 is equipped is a figure which shows the heat generating characteristic in case input voltage is AC20V. The heat generating sheet | seat with which the heating cooker of FIG. 1 is equipped is a figure which shows the heat_generation | fever characteristic in case input voltage is AC25V. The perspective view which shows the drink holder which incorporated the heat generating sheet of the structure similar to the heat generating sheet of the heating cooker of FIG. The perspective view which shows the thin-shaped heating apparatus incorporating the heat generating sheet of the structure similar to the heat generating sheet of the heating cooker of FIG. The perspective view which shows the cooking pot which incorporated the heat generating sheet of the structure similar to the heat generating sheet of the heating cooker of FIG. The top view which shows the heating cooker which concerns on the 2nd Embodiment of this invention. Sectional drawing which shows the heating cooker of FIG. The block diagram which shows the control system of the heating cooker of FIG. 10 functionally.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,51 ... Cooking device, 3b ... Split switch, 5, 6 ... Cooking plate, 7, 8, 39, 43, 49, 57, 58 ... Heat generating sheet, 7a, 8a ... Conductor pattern, 7b, 8b ... Insulation Film, 21 ... Heat generation control unit, 22 ... Voltage setting switching unit, 23 ... Commercial power supply, 24, 27 ... Terminal unit, 25 ... Power supply unit, 26 ... DC-AC inverter, 28 ... Battery power supply, 35 ... Drink holder, 40 ... Thin heating device, 45 ... Cooking pan.

Claims (5)

A heated portion where food or drink or a container containing food or drink is placed;
A heating member having a conductor pattern disposed at least on the bottom side of the heated portion and wired while being sandwiched between a pair of insulating substrates;
A power supply unit for energizing the conductor pattern to generate heat in the heat generating member;
The food-drinks heating apparatus characterized by comprising.   The food / beverage heating apparatus according to claim 1, wherein the conductor pattern is wired while meandering along each inner side surface of the pair of insulating substrates.   The heat generating member is divided into a plurality of portions at a plurality of locations on the bottom side of the heated portion so that a plurality of heating regions having different temperatures are formed on the upper surface of the heated portion. The food / beverage heating apparatus according to claim 1 or 2, characterized in that:   It further includes a heat generation control unit that performs variable control of the heating temperature of the entire upper surface of the heated portion and / or variable control of the heating temperature for each of the plurality of heating regions on the upper surface of the heated portion. The food / beverage heating apparatus according to claim 3.   It comprises at least one of an interface for AC power input corresponding to a commercial power source, an interface for DC power input corresponding to a battery power source of an automobile, and an interface for DC power input corresponding to a rechargeable battery. The food and drink heating apparatus according to any one of claims 1 to 4.

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