JP 2003-308955
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`[Claim(s)]
`
`[Claim l]A cooking—by—heating machine comprising:
`An electromagnetic induction coil.
`An electric insulating plate with which a heated thing and said electromagnetic induction
`coil are insulated.
`
`A temperature detecting means which allots the undersurface of said electric insulating
`plate and detects temperature.
`A metal plate stuck and provided in said temperature detecting means, and a temperature
`control part which controls said electromagnetic induction coil by an output signal of a
`first half temperature detecting means.
`
`[Claim 2]The cooking—by—heating machine according to claim 1 which detects
`temperature of a heated thing from an output of a temperature detecting means.
`[Claim 3]The cooking—by—heating machine according to claim 1 or 2 which connected a
`metal plate to a ground.
`[Claim 4]A cooking—by—heating machine of Claims 1—3 which use a thermo sensitive
`register for a temperature detecting means given in any 1 paragraph.
`[Claim 5]A cooking—by—heating machine of Claims 1—3 which a temperature detecting
`means formed resistance from which resistance changes to an electric insulating plate in
`connection with a temperature change, and were constituted given in any 1 paragraph.
`[Claim 6]The cooking—by—heating machine according to claim 5 which constituted
`resistance from material containing at least one sort of organic metallic compounds or
`metallic powder chosen from a group of Pt, Pd, Rh, nickel, and Ag.
`[Claim 7]The cooking—by—heating machine according to claim 5 or 6 which provided a
`protection layer on the surface of resistance.
`[Claim 8]The cooking—by—heating machine according to claim 7 which constituted a
`protection layer from an electric insulating plate and same quality material.
`
`[Detailed Description of the Invention]
`[0001]
`
`[Field of the Invention]This invention relates to the electromagnetic—induction—heating
`cooking device used for cooking etc.
`[0002]
`
`[Description of the Prior Art]The composition of the conventional electromagnetic—
`induction—heating cooking device is explained based on drawing 4. The electromagnetic
`induction coil 1 which performs electromagnetic induction heating into the main part of
`an electromagnetic—induction—heating cooking device, It comprises the control part 5
`which controls the electromagnetic induction coil 1 by the output of the electric
`insulating plate 3 with which the heated thing 2 and the electromagnetic induction coil 1
`are insulated, the temperature detecting means 4 provided in the field in which the heated
`thing 2 of the electric insulating plate 3 is not laid, and the temperature detecting means
`4. At this time, the temperature detecting means 4 becomes the electric insulating plate 3
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`with the composition held by the retainer board 6.
`[0003]
`
`[Problem to be solved by the invention][ however the heat—conduction mechanism of the
`cooking—by—heating machine shown in conventional drawing 4 ] In the case where the
`heated thing and the electric insulating plate 2 have touched, since there is an air layer,
`the heat of a heated thing is told to the surface of the electric insulating plate 2 by heat
`conduction with radiation heating, and also is told again to a temperature sensor on the
`back by it in the place from which it is separated with the shape of the heated thing. For
`this reason, the problem that a response was also bad was in the top where the
`temperature of a heated thing and the temperature gradient of a sensor are large.
`[0004]
`
`[Means for solving problem]The cooking—by—heating machine which is characterized by
`comprising the following in order that this invention may solve the above—mentioned
`problem.
`Electromagnetic induction coil.
`The electric insulating plate with which a heated thing and said electromagnetic induction
`coil are insulated.
`
`The metal plate provided between said electromagnetic induction coil and the electric
`insulating plate.
`The temperature control part which controls said electromagnetic induction coil by the
`output signal of the temperature detecting means which detects the temperature of said
`metal plate, and a first half temperature detecting means.
`
`[0005]According to the above—mentioned invention, since the influence of an electric
`insulating plate can be removed and temperature detection of a heated thing is early
`attained more by detecting the temperature of a metal plate, accurate temperature
`detection is attained.
`
`[0006]
`
`[Mode for carrying out the invention]In order to solve the above—mentioned problem, [
`the invention of Claim 1 ] The electric insulating plate with which an electromagnetic
`induction coil, and a heated thing and said electromagnetic induction coil are insulated, It
`is the cooking—by—heating machine provided with the temperature detecting means which
`allots the undersurface of said electric insulating plate and detects temperature, the metal
`plate stuck and provided in said temperature detecting means, and the temperature control
`part which controls said electromagnetic induction coil by the output signal of a first half
`temperature detecting means.
`[0007]And the influence of an electric insulating plate can be removed by detecting the
`temperature of the metal plate heated with the electromagnetic induction coil, and
`accurate temperature detection is attained.
`[0008]The invention according to claim 2 is the cooking—by—heating machine according
`to claim 1 which detects the temperature of a heated thing from the output of a
`temperature detecting means. And since it is dependent on the temperature of a non—
`heating substance, and temperature detection of a heated thing is attained more early, the
`accurate temperature detection of the temperature of a metal plate is attained.
`[0009]The invention according to claim 3 is the cooking—by—heating machine which
`connected the metal plate to the ground. And by connecting a metal plate to a ground, the
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`noise to the output signal of resistance can be reduced and detection precision improves.
`[0010]The invention according to claim 4 is a cooking—by—heating machine which uses a
`thermo sensitive register for a temperature detecting means. And it is easy composition
`by using a thermo sensitive register, and it is inexpensive realizable while temperature
`detection is easily possible.
`[0011]The invention according to claim 5 is the cooking—by—heating machine which the
`temperature detecting means formed the resistance from which resistance changes to an
`electric insulating plate in connection with a temperature change, and was constituted.
`And by forming resistance with metal paste, since adhesion with an electric insulating
`plate improves, while accurate temperature detection is attained, thin composition is
`attained.
`
`[0012]The invention according to claim 6 is the cooking—by—heating machine which
`constituted resistance from material containing at least one sort of organic metallic
`compounds or metallic powder chosen from the group of Pt, Pd, Rh, nickel, and Ag. And
`since there is no generating of a crack etc., its reliability improves, while it is excellent in
`adhesion with an electric insulating plate, since resistance is [ resistance's own ductility ]
`excellent by having constituted from material containing at least one sort of organic
`metallic compounds or metallic powder chosen from the group of Pt, Pd, Rh, nickel, and
`Ag.
`[0013]The invention according to claim 7 is the cooking—by—heating machine which
`provided the protection layer. And by providing a protection layer, it becomes possible to
`inhibit the influence of the corrosion of resistance, etc., and reliability improves.
`[0014]The invention according to claim 8 is the cooking—by—heating machine which
`constituted the protection layer from an electric insulating plate and homogeneous
`material. And while adhesion with an electric insulating plate improves by making a
`protection layer into an electric insulating plate and homogeneous material, in order that
`there may be no influence of distortion by a thermal expansion difference, etc., reliability
`increases.
`
`[00 15]
`
`[Working example]Hereafter, the working example of this explanation is described using
`Drawings.
`[0016](Working example 1) Drawing 1 is a sectional view of the heating element in the
`working example 1 of this invention. The electromagnetic induction coil 11 which will
`perform electromagnetic induction heating into the main part of an electromagnetic—
`induction—heating cooking device if composition is explained, It sticks to the electric
`insulating plate 13, provides in the undersurface of the electric insulating plate 13 with
`which the heated thing 12 and the electromagnetic induction coil 11 are insulated, and the
`electric insulating plate 13, and has the temperature detecting means 15 which detects
`temperature, and this temperature detecting means is made to stick the metal plate 14 to
`the bottom, and it constitutes in it. And it has the temperature control part 16 which
`controls the electromagnetic induction coil 11 by the output signal of this temperature
`detecting means 15. In this example, the electric insulating plate 13 used the crystallized
`glass of 6 mm of board thickness which has heat resistance, and the temperature detecting
`means 15 used the thermo sensitive register.
`[0017]The metal plate 14 used about 1.2—mm aluminum board, and constituted the
`cooking—by—heating machine of this invention. As for the metal plate 14, the cooking—by—
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`heating machine of this invention is heated while the heated thing 12 is heated with the
`electromagnetic induction coil 11. Since the influence of the heat capacity of the electric
`insulating plate 13, etc. can be removed by detecting the temperature of this metal plate
`14 by the temperature temperature detecting means 15, boil detection of the heated thing
`12 is attained easily. heating the water 2.0L as the heated thing 12 —— output use of (a)
`water temperature at that time, the output signal of the (b) temperature detecting means
`15 of this invention, and the temperature detecting means 4 of (c) former —— it carried out.
`As a result, although the comparatively higher output up to near 70 ** is shown, at the
`temperature beyond it, as for the cooking—by—heating machine of this invention, it turns
`out that the temperature of a heated thing is detected with sufficient accuracy.
`[0018]On the other hand, in the case of elegance, the temperature of a heated thing is
`conventionally detectable to 40 ** — 65 **, but detection precision is low in the other
`temperature region. Since the temperature of not less than 70 ** is generally detected in a
`cooking—by—heating machine and automatic cooking and boil detection are performed in
`many cases, temperature detection of a heated thing understands that the cooking—by—
`heating machine of this invention is effective.
`[0019]When the output stability of a temperature detecting means performs boil
`detection, compared with elegance, it turns out conventionally that detection about 50
`seconds early is possible, and a response is also good.
`[0020]Since the noise of the output signal of the temperature detecting means 15 can also
`be controlled by connecting the metal plate 14 to a ground, it becomes possible to
`improve temperature detection precision more.
`[0021]The output of the temperature detecting means 15 is transmitted to the temperature
`control part 16, and automatic cooking also becomes possible while preventing unusual
`heating of heating with nothing inside etc. by controlling the electromagnetic induction
`coil 11.
`
`[0022](Working example 2) Drawing 3 (a) is a lineblock diagram of the cooking—by—
`heating machine of this invention working example 2, and (b) is a lineblock diagram of
`the temperature detecting means 15. In this example 2, a different point from the working
`example 1 is a point which forms the resistance 17 from which resistance changes to the
`electric insulating plate 13 in connection with a temperature change as the temperature
`detecting means 15.
`[0023]In this example, the resistance 17 constituted the resistance 17 from forming the
`metal paste constituted by Ag—Pd by printing. Since especially resistance is excellent in
`resistance's own ductility by constituting from material containing at least one sort of
`organic metallic compounds or metallic powder chosen from the group of Pt, Pd, Rh,
`nickel, and Ag, while excelling in adhesion with an electric insulating plate, there is no
`generating of a crack etc.
`[0024]In this example, the temperature coefficient of the resistance 15 was carried out in
`** and 3000 ppm /. By forming the protection layer 18 on the resistance 17, it becomes
`possible to inhibit the influence of corrosion etc., and reliability improves. Since
`generating of the microcrack etc. which are produced according to a thermal expansion
`difference by constituting the protection layer 18 from the electric insulating plate 13 and
`homogeneous material can be controlled, reliability increases more. By constituting the
`temperature detecting means 15 from the resistance 17 formed in the electric insulating
`plate 13, while becoming small composition, the influence of the air layer between the
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`electric insulating plate 13 and the temperature detecting means 15 can be removed, and
`temperature detection is attained more at high degree of accuracy.
`[0025]
`
`[Effect of the Invention]As mentioned above, according to the invention indicated from
`Claim 1 to 8, by providing a metal plate and detecting the temperature of a metal plate,
`since the temperature of a heated thing is computable, the influence of an electric
`insulating plate can be removed, temperature detection of a heated thing is attained more
`early, and accurate temperature detection is attained.
`
`[Brief Description of the Drawings]
`|Drawing 1|The lineblock diagram of the cooking—by—heating machine in the working
`example 1 of this invention
`|Drawing 2|The characteristic figure showing the temperature of the heated thing of this
`invention, and the output of resistance
`|Drawing 3 |(a) The lineblock diagram of the cooking—by—heating machine in the working
`example 2 of this invention
`(b) The lineblock diagram of the resistance in the working example 2 of this invention
`|Drawing 4|The sectional view of the conventional cooking—by—heating machine
`[Explanations of letters or numerals]
`1 Electromagnetic induction coil
`2 Heated thing
`3 Electric insulating plate
`4 Temperature detecting means
`5 Control part
`6 Retainer board
`
`11 Electromagnetic induction coil
`12 Heated thing
`13 Insulating version
`14 Metal plate
`15 Temperature detecting means
`16 Temperature control part
`17 Resistance
`
`18 Protection layer
`
`| Drawing 1 |
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`[Translation done.]
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