JP4120612B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker used in general households.

  Conventionally, this type of cooking device has been configured to call off the power or call attention when a high-temperature cooking container is placed on the display unit or operation unit on the top plate (for example, Patent Document 1). reference).

  FIG. 7 is a perspective view of a conventional cooking device described in the publication.

In the figure, a top plate 1 made of heat-resistant glass is disposed on the upper surface of the main body of the heating cooker with its outer peripheral portion covered by a top frame 2. The heating unit 3 is arranged on the front left and right sides and the center back side. Reference numeral 4 denotes an operation unit of a capacitive touch key provided on the front side of the top plate 1 corresponding to each heating unit 3, and a part of the cooking container placed on the heating unit at the time of heating is provided. When the operation unit 4 is placed at or near the operation unit 4 and becomes abnormally hot under the influence of heat, it turns off the power, displays a warning, or gives a buzzer notification. .
JP 2003-133042 A

  However, the conventional configuration described above does not actively lower the temperature of the display element only by turning off the power or calling attention.

  Therefore, the present invention detects that the temperature of the temperature detection unit rises and drives the blower or increases the air volume, so that the temperature of the display unit such as the display element does not rise, and the cooking container approaches the operation unit. The rise in the temperature of the display unit is intended to prevent the operation key from being inadvertently operated by increasing the possibility that the operation key will inadvertently operate when the cooking container hits the key. .

To this end, the cooker of the invention, the top plate of the plate-like member having an electrical insulating property provided on the upper surface of the housing, two on the front side for heating the object to be heated, the center back One heating unit provided on the side, and an operation unit and operation by a capacitive touch key provided on the top plate corresponding to the front heating unit for inputting operation information by the user A display unit with a liquid crystal display element for displaying a state, a blower for sending cooling air to the liquid crystal display element, a substrate on which the liquid crystal display element is provided, and provided in the vicinity of the liquid crystal display element; A temperature detection unit that detects a temperature of the liquid crystal display element near the front side heating unit; and a control unit that controls output of the heating unit and air flow of the blower, and the front side heating unit And the leading edge of the top plate The display unit and the operation unit are arranged such that the front side heating unit is positioned at a portion closest to the front edge of the top plate and the operation unit is positioned on the front side of the display unit, The control means rotates the blower at a low speed during normal cooking, increases the rotational speed of the blower when the temperature of the temperature detection unit rises above a certain temperature, and the temperature of the temperature detection unit is the heating was stopped when it becomes more than a second temperature higher than a certain temperature, has a structure that eliminates possible the operation of the touch key of the operation unit displays an abnormality. With this configuration, it is possible to prevent the temperature of the operation unit from becoming high even if the user inadvertently places the cooking container in the region of the operation unit. Moreover, since it is not necessary to provide a protrusion on the top plate, the top surface of the top plate can be flattened.

Further, if the cooking vessel of the high-temperature to the operating unit on the top plate is placed, as the temperature of the temperature detector installed in the vicinity of the display device increases the rotational speed of the detection to the blower from increasing When the temperature of the display unit rises by preventing the temperature of the display unit such as the display element from rising and the temperature of the display unit increases due to the cooking container approaching the operation unit, there is a high possibility that the operation key will inadvertently operate when the cooking container hits the key. Therefore, it is possible to prevent the operation keys from being inadvertently operated by disabling the key operation.

According to a first aspect of the present invention includes a top plate of the plate-like member having an electrical insulating property provided on the upper surface of the housing, two on the front side for heating an object, one in the center rear side displaying the provided heating unit, said provided corresponding to the front heating section in the top plate, an operation unit and an operation state by the touch key of the capacitive type for which the user inputs operation information the liquid crystal display unit by the display device, a blower for sending cooling air to the liquid crystal display device provided in the vicinity of the liquid crystal display device in front Symbol liquid crystal display device is provided with a substrate and the same substrate and said liquid crystal display for A temperature detection unit that detects a temperature of the element near the front heating unit; and a control unit that controls output of the heating unit and air blown from the blower, the front heating unit and the top The front side between the front edge of the plate As the heating unit is located closest portion to the front edge of said top plate and said operation unit is positioned on the front side than the display unit, the display unit and the operating unit is disposed, said control means, Normally , the fan is driven with an excessive air volume by rotating the fan at a low speed during normal cooking and increasing the number of rotations of the fan when the temperature of the temperature detector rises above a certain temperature. In addition, there is an effect that the temperature of the display unit such as the display element can be prevented from increasing by increasing the rotational speed of the blower as necessary while suppressing excessive power consumption inside the device.

Further, the heating when the temperature of the temperature detector is equal to or higher than a second temperature higher than said predetermined temperature stopped by Rukoto shown Table abnormal, so that the temperature of the display unit such as a display device is not increased As the cooking container approaches the operation unit and the temperature of the display unit rises, there is a high possibility that the operation key will inadvertently operate when the cooking container hits the key, and the operation key operates inadvertently. This has the effect that it can be prevented in advance.

Further, as the temperature of the temperature sensing unit stops heating when it becomes more than a second temperature higher than the certain temperature, it can not be the Rutotomoni key operation indicating table abnormality, the cooking vessel operating unit It has an effect that it is possible to prevent an operation key from moving inadvertently.

In the invention according to claim 2 of the present invention, in addition to the above, the blower is provided below the substrate on which the liquid crystal display element is provided, and the cooling air blown by the blower is provided below the front side heating unit. When the temperature of the display unit such as the display element , the operation unit, and the control unit rises by being separated and guided in the direction of the unit and the direction of the liquid crystal display unit , these are cooled .

Embodiments and reference embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the present embodiment and reference embodiments .

(Embodiment 1)
FIG. 1 is a perspective view showing a state in which a cooking device according to an embodiment of the present invention is attached to a system kitchen, and FIG. 2 is a cross-sectional view of a main part of the cooking device.

  Hereinafter, the configuration of the cooking device will be described with reference to FIGS. 1 and 2. In FIG. 1, a heat-resistant glass top plate 1 is covered with a top frame 2 on the upper surface of a main body constituting the outline of the heating cooker. On the lower surface of the top plate 1, heating means 3 is arranged as shown in FIG.

  Furthermore, on the upper surface of the top plate 1, there is a display unit 6 for displaying a cooking operation state or the like by a touch key type operation key 4 by a capacitance and a liquid crystal display element 5.

  In this embodiment, the heating means 3 is composed of induction heating coils 3a and 3b for heating the cooking pot 7 by induction heating to heat the object to be cooked, and a radial heater 3c for heating using a pot that cannot be used for induction heating. Yes.

In FIG. 2, 1 is a heat-resistant glass top plate, 3 is an induction heating coil, 4 is a touch key type operation key based on a capacitance facing the electrode 8, 6 is a display unit by the liquid crystal display element 5, and 9 is A temperature detection unit 10 that detects the temperature of the liquid crystal display element 5 near the heating coil 3 is a blower that operates when the temperature of the liquid crystal display element 5 , the operation unit 4, or the control unit 11 rises and cools them. .

  A control unit 11 for controlling the heating means 3 according to an input operation is provided in the main body.

  About the heating cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the operation key 4 is operated to perform tempura cooking or fried food, the temperature at the bottom of the pan 7 becomes 100 ° C. or higher.

  FIG. 3 is a graph showing the temperature change of the temperature detector 9.

  When cooking in a normal state, the temperature of the liquid crystal display element 5 is about 40 ° C. However, when the pan 7 is placed on the display unit 6, the temperature of the liquid crystal display element 5 rises and a normal display is obtained. The control unit 11 (control means) detects this with the temperature detection unit 9 and detects an abnormality with the temperature detection unit 9 when the temperature detection unit 9 reaches about 80 ° C. The liquid crystal display element 5 is lowered in temperature by operating and sending cool air.

  Since the blower 10 is also used for cooling the control unit 11, cooking is usually already performed at a low speed, and the temperature of the temperature detection unit 9 becomes about 80 ° C. in this state. Increases the rotational speed of the blower 10 and rotates it at a high speed to lower the temperature of the liquid crystal display element 5.

( Reference form 1 )
In FIG. 2, the temperature of the pan 7 where the tempura cooking or the stir-fried food is performed is very high. If the pan 7 is placed on the display unit 6 and left further, the temperature of the liquid crystal display element 5 is set to As shown in FIG. 4, when the temperature reaches the second temperature of about 90 ° C., the heating is stopped, an abnormality is notified with a buzzer, and a display indicating the abnormality is displayed on the display unit 6. Do.

(Embodiment 2 )
In FIG. 2, the temperature of the pan 7 where tempura cooking or fried food is performed is very high. If the pan 7 is placed on the display unit 6 and left further, the temperature of the liquid crystal display element 5 rises, and this temperature is When the temperature of 2 reaches about 90 ° C., the heating is stopped, the abnormality is notified with the buzzer, the abnormality is displayed on the display unit 6, and even if the operation key 4 is operated, the key operation is not effective. It is possible to prevent the pan 7 from touching the operation key 4 and performing an erroneous key operation.

( Reference form 2 )
In FIG. 2, when the pan 7 subjected to tempura cooking or fried food is placed on the display unit 6, particularly when the temperature of the pan 7 is high, the temperature of the liquid crystal display element 5 rapidly increases, and the first Even if the blower 10 is operated at a constant temperature of about 80 ° C., the temperature may further increase. Therefore, as shown in FIG. 5, the temperature detector 9 detects the abnormal state where the pan 7 is placed as soon as possible. The temperature at which the temperature of the fan rises within a certain time, that is, the rate of temperature rise is detected. For example, when the temperature rises by 1 ° C. or more per second, the rotation speed of the blower 10 is increased and the liquid crystal display is rotated at a high speed. The temperature of the element 5 is lowered.

  As a result, the abnormal state can be detected earlier, and the temperature of the liquid crystal display element 5 can be effectively lowered.

( Reference form 3 )
In FIG. 2, the temperature of the pan 7 that has been cooked and fried in the same manner as described above is very high. In order to detect, the temperature rise rate of the temperature detection part 9 is detected as shown in FIG. For example, when the temperature rises by 1 ° C. or more per second, the rotation speed of the blower 10 is increased and the rotation speed is increased to lower the temperature of the liquid crystal display element 5. However, if the temperature of the pan 7 is high, the temperature continues to rise. When the temperature reaches the second set temperature of about 90 ° C., the heating is stopped, an abnormality is notified with a buzzer, and a display indicating the abnormality is displayed on the display unit 6. And disable key operation.

  As a result, the abnormal state can be detected earlier, the temperature of the liquid crystal display element 5 can be effectively lowered, and if the temperature still rises, the overheating is stopped or the abnormality is notified to the user by the abnormality notification. By informing and disabling the key operation, it is possible to further prevent the pan 7 from touching the operation key 4 and performing an erroneous key operation.

  Here, since the first set temperature, the second set temperature, and the temperature increase rate at which an abnormality is detected vary depending on the configuration of each component, it is necessary to experimentally determine the specific configuration.

  As described above, the cooking device according to the present invention can be widely applied to all cooking devices having touch keys.

The figure which shows the 1st Embodiment of this invention The figure which shows the partial cross section of the 1st Embodiment of this invention The figure which shows the temperature change of the 1st Embodiment of this invention The figure which shows the temperature change of the 1st reference form of this invention The figure which shows the temperature change of the 2nd reference form of this invention The figure which shows the temperature change of the 3rd reference form of this invention Perspective view of conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 3 Heating part 4 Operation part 5 Liquid crystal display element 6 Display part 9 Temperature detection part 10 Blower

Claims (2)

And the top plate of the plate-like member having an electrical insulating property provided on the upper surface of the housing, two on the front side for heating the object to be heated, and one provided with the heating unit in the center rear side, the said top plate An operation unit using a capacitive touch key for inputting operation information by a user and a display unit using a liquid crystal display element for displaying an operation state provided corresponding to the front heating unit, and the liquid crystal a blower for sending cooling air to the display element, prior SL temperature closer to the front heating section of and the liquid crystal display device provided in the vicinity of the liquid crystal display device liquid crystal display device on the substrate and the same substrate provided And a control means for controlling the output of the heating unit and the ventilation of the blower, and the front side heating between the front side heating unit and the front edge of the top plate In front of the top plate As closest located portion and the operation portion is positioned on the front side than the display unit, the display unit and the operating unit is disposed, said control means, said blower while normal cooking was low speed, the increased rotational speed of the blower when the temperature of the temperature sensing portion rises above a certain temperature, when the temperature of the temperature detector is equal to or higher than a second temperature higher than said predetermined temperature the heating was stopped, the heating cooker that eliminate possible the operation of the touch key of the operation unit displays an abnormality. The blower is provided below the substrate on which the liquid crystal display element is provided, and the cooling air blown by the blower is guided separately from the direction of the control means provided below the front side heating unit and the direction of the liquid crystal display means. the cooking device according to claim 1.

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