JP6998152B2 - Stove - Google Patents

Description

The present invention relates to a stove in which an operation portion is provided on an upper surface portion of a top plate.

Conventionally, in a stove equipped with a heating means such as a heating coil or a burner, the temperature of a portion where the temperature changes due to the influence of the heat generated from the heating means is detected by the temperature detecting means during the use of the heating means, and the detection thereof is performed. It is known that the heating means has an output limiting function of limiting the output when the temperature becomes a predetermined temperature or higher (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 4-137389 Japanese Unexamined Patent Publication No. 2002-75617.

By the way, in recent years, in consideration of operability, display visibility, design, etc., a stove in which an operation unit for operating the output of the heating means is arranged on the upper surface portion of the top plate has been proposed. However, in this type of stove, a high-temperature cooking container such as a pot or a kettle may be carelessly placed on the operation unit when the heating means is not operating and is in an unused state. In this case, even if the output limiting function as described above is provided, the operation board that controls the operation of the operation unit may be overheated due to the heat of the cooking container, which may lead to an abnormality such as a malfunction or failure of the operation unit. there were.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a stove having an operation unit on the upper surface of the top plate, even when the heating means is not used, on the operation unit. The purpose is to prevent an abnormality in the operation unit due to a heat load when a high-temperature cooking container is placed.

INDUSTRIAL APPLICABILITY The present invention is provided on a top plate constituting the upper surface of an instrument body, a heating means for heating a cooking container placed on the upper surface portion of the top plate, and an upper surface portion of the top plate to control the output of the heating means. It is a stove that has an operation unit and displays a pseudo operation key that turns the main power on and off by standby power supplied from the power supply source on the operation unit, and one or more on the operation board that controls the operation of the operation unit. When the temperature detection means is provided, the main power of the stove is off, and the heating means is not operating, when the detection temperature of the temperature detection means exceeds a predetermined temperature, the overheating of the operation board is externally applied. It has a control configuration for outputting a notification to the stove.

In this case, when the main power of the stove is off and the heating means is not operating and the cooking container is not in use, a high-temperature cooking container is placed on the operation unit, and the detection temperature of the temperature detection means is equal to or higher than the predetermined temperature. When the temperature becomes high, the user is notified that the operation board is in an overheated state, so that the user can be urged to remove the cooking container from the operation unit.

Preferably, in the above stove, when the main power of the stove is on and the heating means is operating, the output of the heating means is constant when the detection temperature of the temperature detection means becomes a predetermined temperature or higher. In addition to limiting to the following, it has a control configuration that notifies and outputs the overheating of the operation board to the outside.

In this product, high-temperature cooking is performed on the operation unit not only when the heating means is not operating but also when the main power of the stove is on and the heating means is operating. When the container is placed and the temperature detected by the temperature detecting means exceeds a predetermined temperature, the user is notified that the operation board is in an overheated state, so that the user is urged to remove the cooking container from the operation unit. Can be done. Further, when the detection temperature of the temperature detecting means becomes a predetermined temperature or higher, the output of the heating means is limited to a certain level or less, so that the operation substrate is heated by the heat released from the heating means in addition to the heat of the cooking container. Can also be suppressed.

As described above, according to the present invention, even if a high-temperature cooking container is placed on the operation, the operation board is promptly notified to the outside that the operation board is in an overheated state, and the cooking container from above the operation unit is provided. Since the elimination can be urged to the user, it is possible to prevent the abnormality of the operation unit due to the heat load from the cooking container.

FIG. 1 is a schematic perspective view of a stove according to an embodiment of the present invention. FIG. 2 is a schematic vertical cross-sectional view of the vicinity of the operating portion of the stove according to the embodiment of the present invention. FIG. 3 is a diagram showing a normal display mode of the operation unit in the standby state of the stove according to the embodiment of the present invention. FIG. 4 is a diagram showing a normal display mode of the operation unit in the activated state of the stove according to the embodiment of the present invention. FIG. 5 is a diagram showing a normal display mode of the operating unit in a state where the heating means of the stove according to the embodiment of the present invention is operated. FIG. 6 is a flowchart showing a control operation when the operation board is overheated by the stove according to the embodiment of the present invention. FIG. 7 is a diagram showing a display mode when the operation unit is overheated in the standby state of the stove according to the embodiment of the present invention. FIG. 8 is a diagram showing a display mode when the operation unit is overheated in the activated state of the stove according to the embodiment of the present invention. FIG. 9 is a diagram showing a display mode when the operating unit is overheated in a state where the heating means of the stove according to the embodiment of the present invention is operated.

Next, the above-described embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the stove 1 according to the embodiment of the present invention is a so-called built-in stove that is mounted in a dropped state in a mounting port K1 provided in a counter top K of a kitchen, and is a top open box. The outer shell is composed of a main body case 10 having a shape and a top plate 11 that covers the upper surface opening 100 of the main body case 10 from above. In the present specification, the outer surface (hereinafter referred to as “front surface of the main body”) 101 of the main body case 10 facing the front edge side of the counter top K is the front surface of the stove 1, and the main body when the stove 1 is viewed from the front side. The depth direction of the case 10 is referred to as the front-back direction, the width direction is referred to as the left-right direction, and the height direction is referred to as the up-down direction.

The top plate 11 is made of a glass plate having high heat resistance and impact resistance. On the upper surface portion (hereinafter referred to as “top plate upper surface”) 111 of the top plate 11, a trivet 12 that supports a cooking container such as a pot or a kettle from below is placed. Further, the upper surface 111 of the top plate is provided with one or a plurality (here, two) stove burners 13 as heating means for heating the cooking container placed on the trivet 12.

In the present embodiment, two stove burners 13 are arranged vertically in front and behind at a substantially central position between the left and right sides of the top plate upper surface 111, and the front stove burner (hereinafter referred to as "front burner") 13A has. , A burner for low heat cooking, which has a smaller minimum heating power than the rear stove burner (hereinafter referred to as "rear burner") 13B, is used.

The front burner 13A and the rear burner 13B are each incorporated in the main body case 10, and are arranged in a state in which a substantially cylindrical burner body 130 is projected upward from a burner opening (not shown) provided on the top plate 11. Has been done.

At the front position of the front burner 13A on the top plate upper surface 111, a plane region 11T in which the trivet 12 and the stove burner 13 are not arranged is secured. An operation function for instructing the operation of the stove burner 13 and a display for displaying the operation state of the stove 1 are displayed on the lower surface portion (hereinafter referred to as "the lower surface of the top plate") 112 of the top plate 11 and at a position below the plane region 11T. An operation display unit 14 that also has a function is incorporated.

The operation display unit 14 includes a plurality of electrostatic sensors that detect that the user touches a predetermined position of the flat area 11T, a plurality of light emitting elements that display a set thermal power and an error code at a predetermined position of the flat area 11T, and a static electricity. An operation display board 20 as an operation board including an operation display control circuit for controlling the operation of an electric sensor and a light emitting element is provided, and the plane area (hereinafter referred to as “operation display unit”) 11T is an output of the controller 13. It is an electrostatic touch panel as an operation unit for operating.

The operation display board 20 is housed in a substantially rectangular box-shaped electrical case 21 having a small thickness, and a predetermined gap S is defined between the top plate lower surface 112 and the operation display board 20 (). See Figure 2). Therefore, even if a high-temperature cooking container is placed on the upper surface of the operation display unit 11T, it is difficult for the heat of the cooking container to be directly transferred to the operation display board 20.

The operation display board 20 is connected to a power supply source (not shown), and when the main power supply of the stove 1 is off (standby state), the standby power supplied from the power supply source causes the operation display unit 11T. As shown in FIG. 3, only the power key 31 which is a pseudo operation key for turning on / off the main power of the stove 1 is displayed.

When the power key 31 is pressed while the main power is off, starting power is supplied from the power supply source to the operation display board 20, and the main power of the stove 1 is turned on (starting state). When the main power is turned on, as shown in FIG. 4, the operation display unit 11T has a point fire extinguishing key 32 which is a pseudo operation key for igniting and extinguishing each stove burner 13 in addition to the power key 21. , The timer setting key 33, which is a pseudo operation key for switching the setting and cancellation of the timer cooking mode of each stove burner 13, is displayed.

When a predetermined point fire extinguishing key 32 (for example, the left point fire extinguishing key 32 shown in FIG. 4) is pressed while the main power is on, gas is supplied to the corresponding stove burner 13 from a gas supply source (not shown). , Ignite. When the stove burner 13 is ignited, as shown in FIG. 5, the operation display unit 11T displays the thermal power of the ignited stove burner 13 in addition to the power key 31, the point fire extinguishing key 32, and the timer setting key 33. The up / down key 34, which is a pseudo operation key for adjusting the size of the stove, and the thermal power indicator 35, which indicates the set thermal power of the ignited stove burner 13, are displayed.

In the present embodiment, the point fire extinguishing key 32, the timer setting key 33, the up / down key 34, and the thermal power indicator 35 corresponding to the front burner 13A are displayed at the position to the right of the operation display unit 11T, and the operation display unit is displayed. A point fire extinguishing key 32, a timer setting key 33, an up / down key 34, and a thermal power indicator 35 corresponding to the rear burner 13B are displayed at a position to the left of 11T.

As shown in FIGS. 1 and 2, the temperature of the operation display board 20 is detected in the upper surface portion 201 of the operation display board 20, that is, the gap S between the top plate lower surface 112 and the operation display board 20 in the electrical case 21. A display unit temperature sensor 22 is provided as a single or a plurality of (here, three) temperature detecting means.

In this embodiment, three operation display boards 20 are provided at equal intervals side by side at the rear position of the operation display board 20, and the central display unit temperature sensor 22 is located at the center position between the left and right sides of the operation display board 20. Although it is provided, if it is possible to reliably detect that a high-temperature cooking container is placed on the operation display unit 11T, one display unit temperature sensor 22 is located at the center position between the left and right sides of the operation display unit 20. It may be provided only, or two may be provided at the left and right positions with the center between the left and right sides of the operation display board 20 interposed therebetween. Further, a plurality of operation display boards 20 may be arranged side by side in the front-rear direction.

The operation display control circuit (not shown) of the operation display board 20 is a stove according to the on / off operation of the operation monitoring unit and the power key 31 for monitoring whether or not each operation key 31 to 34 displayed on the operation display unit 11T has been operated. A power control unit that turns on and off the main power of 1, a point fire extinguishing control unit that ignites and extinguishes the corresponding stove burner 13 according to the on / off operation of the point fire extinguishing key 32, and a stove burner corresponding to the on / off operation of the timer setting key 33. A cooking mode control unit that turns on and off the timer cooking mode of 13, a thermal power control unit that increases or decreases the thermal power of the corresponding stove burner 13 according to the operation of the up / down key 34, a point fire extinguishing key 32, a timer setting key 33, and an up / down key 34. It has a circuit configuration such as a display control unit for switching between display and non-display of the thermal power indicator 35 and the like.

Further, the operation display control circuit monitors whether or not the detection temperature of the point fire extinguishing determination unit and the display unit temperature sensor 22 for determining whether or not the control burner 13 is ignited and in use is equal to or higher than a predetermined temperature. When the detection temperature of the board temperature determination unit and the display unit temperature sensor 22 exceeds a predetermined temperature, the operation display unit 11T or an audio output unit (not shown) notifies that the operation display board 20 is in an overheated state. It has a circuit configuration of a control unit.

The control operation when the operation display board 20 by the stove 1 is overheated will be described with reference to the flowchart of FIG.

When the main power of the stove 1 is off (No in the step of ST1), if the detection temperature T1 of the display unit temperature sensor 22 is less than the predetermined temperature Ts (here, 85 ° C.) (No in the step of ST2). The display of the operation display unit 11T is maintained in the standby display mode shown in FIG.

After that, for example, a high-temperature cooking container is placed on the operation display unit 11T, and the temperature of the cooking container is transmitted to the display unit temperature sensor 22 via the top plate 11. As a result, at least one of the display unit temperature sensors 22 When the detected temperature T1 of the above is equal to or higher than the predetermined temperature Ts (Yes in the step of ST2), the operation display board 20 is notified and output by voice and display (ST3 to ST4). Specifically, after the buzzer sounds, a voice message such as "Please move the pot from the operation unit" is output from the voice output unit (not shown), and an error code indicating that the operation display board 20 is in an overheated state is output. 36 is blinked and displayed on the operation display unit 11T (see FIG. 7).

If the power key 31 is pressed after the overheat of the operation display board 20 is notified in the step of ST4 (Yes in the step of ST5), the main power of the stove 1 is turned on and the overheat is described above. The notification output of is stopped (ST6 to ST7), and the process returns to the step of ST1. At this time, the display of the operation display unit 11T is changed to the display mode at the time of activation shown in FIG.

Although not shown, when any of the point fire extinguishing keys 32 is pressed while the main power of the stove 1 is on (Yes in the step of ST1), that is, the ignition operation of the specific stove burner 13 is performed. If so, the corresponding stove burner 13 is ignited, and the display of the operation display unit 11T is changed to the display mode at the time of ignition shown in FIG.

After the main power of the stove 1 was turned on (Yes in the step of ST1), when none of the stove burners 13 was ignited, the high temperature cooking container was placed on the operation display unit 11T. When the detection temperature T1 of at least one of the display unit temperature sensors 22 becomes a predetermined temperature Ts or more (Yes in the step of ST8, No in the step of ST9), the operation display board 20 is the same as in the steps of ST3 and ST4. (ST10 to ST11) to notify and output the overheating of. Specifically, after the buzzer sounds, a voice message such as "Please move the pot from the operation unit" is output from the voice output unit (not shown), and an error code indicating that the operation display board 20 is in an overheated state is output. 36 is displayed blinking on the operation display unit 11T.

Further, at this time, the display of the timer setting key 33 is erased from the operation display unit 11T so that the operation of switching the timer cooking mode on / off is not performed (see FIG. 8).

If the power key 31 is pressed after the overheat of the operation display board 20 is notified in the step of ST11 (Yes in the step of ST12), the main power of the stove 1 is returned to the off state and the overheat is described above. The notification output of is stopped (ST13 to ST14), and the process returns to the step of ST1. At this time, the display of the operation display unit 11T is changed to the standby display mode shown in FIG.

On the other hand, after the main power of the stove 1 is turned on (Yes in the step of ST1), when the stove burner 13 is ignited, a high temperature cooking container is placed on the operation display unit 11T, and as a result, at least When the detection temperature T1 of any one of the display unit temperature sensors 22 becomes the predetermined temperature Ts or more (Yes in the step of ST8, Yes in the step of ST9), the thermal power of all the stove burners 13 is limited to a certain level or less (Yes). Here, the fire is extinguished) and the overheating of the operation display board 20 is notified and output (ST15 to ST17). Specifically, all the ignited stove burners 13 are automatically extinguished, the buzzer sound is output from the voice output unit (not shown), and then a voice message such as "Please move the pot from the operation unit" is sent. Output from an audio output unit (not shown). Further, the error code 36 indicating that the operation display board 20 is in an overheated state is blinked on the operation display unit 11T, and the point fire extinguishing key 32 and the thermal power indicator 35 corresponding to the ignited stove burner 13 are blinked ( See FIG. 9).

Further, at this time, the display of the timer setting key 33 and the up / down key 34 is erased from the operation display unit 11T so that the operation of switching the timer cooking mode on / off and the operation of adjusting the heating power of the ignited stove burner 13 are not performed (FIG. 9).

If the point fire extinguishing key 32 corresponding to the stove burner 13 whose thermal power is restricted (automatic fire extinguishing) is pressed after the overheating of the operation display board 20 is notified and output in the step of ST17 (Yes in the step of ST19), The overheat notification output is stopped (ST20), and the process returns to the step of ST1. At this time, the display of the operation display unit 11T is changed to the display mode at the time of activation shown in FIG.

On the other hand, if the power key 31 is pressed after the overheat of the operation display board 20 is notified and output in the step of ST17 (Yes in the step of ST18), the main power of the stove 1 is turned off and the main power of the stove 1 is turned off. The overheat notification output is stopped (ST13 to ST14), and the process returns to the step of ST1. At this time, the display of the operation display unit 11T is changed to the standby display mode shown in FIG.

As described above, according to the stove 1, when the stove burner 13 is not ignited and is in an unused state, a high-temperature cooking container is placed on the operation display unit 11T, and at least one of the display unit temperature sensors 22 is placed. When the detected temperature T1 of the above is equal to or higher than the predetermined temperature Ts, the operation display board 20 is promptly notified to the outside that the operation display board 20 is in an overheated state, and the user is urged to remove the cooking container from the operation display unit 11T. Therefore, it is possible to prevent abnormalities such as malfunction and failure of the operation display unit 11T due to the heat load from the cooking container.

Moreover, in this case, the high temperature cooking container is placed on the operation display unit 11T not only when the stove burner 13 is not ignited but also when the stove burner 13 is ignited. When the detection temperature T1 of at least one of the display unit temperature sensors 22 becomes a predetermined temperature Ts or more, the operation display board 20 is promptly notified to the outside that the operation display board 20 is in an overheated state, and the operation display unit 11T is displayed. Since it is possible to urge the user to eliminate the cooking container, it is possible to more reliably prevent the abnormality of the operation display unit 11T due to the heat load from the cooking container.

Further, in this case, when the detection temperature T1 of at least one of the display unit temperature sensors 22 becomes a predetermined temperature Ts or more when the stove burner 13 is ignited and used, the heating power of the stove burner 13 is promptly turned on. Since the temperature is limited to a certain level or less (here, the fire is extinguished), it is possible to prevent the operation display board 20 from being further heated by the heat released from the stove burner 13 in addition to the heat of the cooking container. This makes it possible to more reliably prevent abnormalities due to overheating of the operation display unit 11T.

In the above embodiment, the control burner 13 is configured to automatically extinguish the fire if the detection temperature T1 of the display unit temperature sensor 22 becomes equal to or higher than the predetermined temperature Ts when the control burner 13 is ignited. However, when the detection temperature T1 of the display unit temperature sensor 22 becomes a predetermined temperature Ts or higher, the thermal power is limited to a predetermined low thermal power (for example, the minimum thermal power) without extinguishing the control burner 13. It may be configured in.

Further, in the above embodiment, if the detection temperature T1 of the display unit temperature sensor 22 becomes equal to or higher than the predetermined temperature Ts when the stove burner 13 is ignited, the thermal power of all the stove burners 13 is reduced to a certain level or less. Although it has been described that it is configured to limit, if the detection temperature T1 of the display unit temperature sensor 22 becomes a predetermined temperature Ts or more, the thermal power of the stove burner 13 (front burner 13A) installed close to the operation display unit 11T. It may be configured to limit only to a certain level or less. With this configuration, even if the operation control board 20 becomes overheated, it is possible to continue cooking with the stove burner 13 (rear burner 13B), which has little effect on the temperature of the operation control board 20, so that it is easy to use. Does not impair.

Further, in the above embodiment, there are a plurality of display unit temperature sensors 22, and the detection temperature T1 of any one of the display unit temperature sensors 22 is a predetermined temperature Ts or more when the control burner 13 is ignited. However, when the temperature T1 detected by all the display unit temperature sensors 22 becomes equal to or higher than the predetermined temperature Ts, the operation display board 20 has been described. It may be configured to notify the overheating of the above, the detection temperature T1 of at least one of the display unit temperature sensors 22 is equal to or higher than the predetermined temperature Ts, and the detection temperature T1 of each display unit temperature sensor 22. It may be configured to notify the overheating of the operation display board 20 when the temperature difference between the two is less than a predetermined value.

In the stove 1 having the configuration as described above, when the high temperature cooking container is placed on the operation display unit 11T, the temperature inside the electrical case 21 (the top plate lower surface 112 and the operation display board 20) is generated by the heat of the cooking container. The temperature of the gap S) also rises. Therefore, it is unlikely that only the detection temperature T1 of one display unit temperature sensor 22 will increase, and the detection temperature T1 of the other display unit temperature sensor 22 will not increase. Therefore, if the configuration is such that the overheating of the operation display board 20 is determined based on the change of the detection temperature T1 of all the display unit temperature sensors 22 as described above, the heat from the cooking container placed on the operation display unit 11T is determined. Overheating of the operation display board 20 due to the load can be detected more accurately.

In the above embodiment, a burner using a gas combustion exhaust gas as a heat source is used as a heating means for heating the cooking container on the top plate 11, but the present invention describes the heating means from the electric heating unit. It can be applied to a stove using an electric heater that heats a cooking container by radiant heat or conduction heat, and can also be applied to a stove that uses an electromagnetic induction heater that heats a cooking container by electromagnetic induction. Further, as a heating means, it can be applied to a stove in which a gas burner, an electric heater, and an electromagnetic induction heater are used in combination.

Further, the present invention can be applied not only to the built-in stove used by burying it in the counter top K of the kitchen but also to the table stove used by placing it on the table of the kitchen, and it is covered inside the main body case 10. It can also be applied to a stove equipped with a grill for accommodating and cooking heated substances.

1 Stove 11 Top plate 111 Top plate top surface (upper surface)
11T operation display unit (operation unit)
13 Stove burner (heating means)
20 Operation display board (operation board)
22 Display unit temperature sensor (temperature detection means)

Claims (2)

A top plate constituting the upper surface of the utensil body, a heating means for heating the cooking container placed on the upper surface portion of the top plate, and an operation unit provided on the upper surface portion of the top plate to operate the output of the heating means. It is a stove in which a pseudo operation key that turns the main power on and off by the standby power supplied from the power supply source is displayed on the operation unit .
The operation board that controls the operation of the operation unit is provided with one or more temperature detection means.
When the main power of the stove is off and the heating means is not operating, when the detection temperature of the temperature detection means exceeds the specified temperature, the control configuration is to notify the overheat of the operation board to the outside. Have a stove. In the stove according to claim 1,
When the main power of the stove is on and the heating means is operating, when the detection temperature of the temperature detecting means exceeds a predetermined temperature, the output of the heating means is limited to a certain level or less and the operation is performed. A stove having a control configuration that notifies and outputs the overheating of the board to the outside.

Images