JPH1014781A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change a heat output corresponding to load by enabling the automatic temperature control of grilled surface temperature even for an object to be heated composed of an attachable/detachable type grate concerning a heating cooker with which the object to be heated is heated by electromagnetic induction heating and grilled foods are cooked on this object. SOLUTION: A non-magnetic substance metal bar 11 is provided between a heating coil 8 and a ceramic plate 9. Concerning this non-magnetic substance metal bar 11, one end is arranged at the outer peripheral part of the heating coil 8, the other end is arranged at the central part of the heating coil 8, a part of the non-magnetic substance metal bar 11 is contact with the ceramic plate 9, a temperature detector is mounted on the non-magnetic substance metal bar 11 and a control part 7 indirectly detects the temperature of an object 2 to be heated correspondingly to the signal of the temperature detector through the ceramic plate 9 at the time of heating, performs the output control of induction heating and controls the temperature of the object 2 to be heated into a prescribed temperature. At the same time, a controller 6 is provided with plural temperature setting keys and, when setting the temperature of the object 2 to be heated, plural temperatures (automatically conditioned temperature, high temperature and warmth retaining, for example,) are set so that the object is controlled into respective temperatures.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial heating cooker for performing grilling by electromagnetic induction heating by controlling the temperature of a heating surface.

[0002]

2. Description of the Related Art Conventionally, gas or electricity has been used as a heat source as a heating cooker for cooking baked goods for business use, and in the case of electricity, a sheathed heater or the like is often used. If the object to be heated is a metal baking plate or the like, the temperature of the object to be heated was controlled to a predetermined temperature by attaching a temperature detector to the object and performing temperature detection and controlling the output of a heat source. .

[0003]

In the conventional heating cooker, when a roast is used as an object to be heated, it is difficult to mount a temperature detector on the roast, since it has a structure in which the rost can be attached and detached. Because it was not possible, the method of adjusting the heat manually was the usual usage. Therefore, for example, when performing grilled meat, etc., the appropriate temperature is about 250 to 300 ° C.
However, it is difficult to maintain the appropriate temperature by manually adjusting the heating power, and the temperature of the grilled surface is too high, resulting in a lot of burns, low temperature, too long grilling time, and poor cooking. Was. In addition, when the temperature is too high, there are drawbacks such as increased burning and increased generation of smoke.

[0004] In addition, products in which a heating source is electromagnetic induction heating have also been commercialized. However, as in the case of using the above-mentioned electricity as a heat source, the temperature can be adjusted by heating a metal grill. However, it is a reality that it is difficult to attach a temperature detector with a detachable type roster, etc., and it is not possible to adjust the temperature, it is difficult to maintain an appropriate temperature, there is a lot of scorching, baking time is too long, cooking Had the drawback of not being able to do well.

Also, the required amount of heat varies depending on the amount of the baked goods, and it is difficult to maintain a temperature suitable for the baked goods by manual control.

[0006]

In order to solve the above-mentioned problems, the temperature of a detachable roaster is indirectly detected, and this temperature is set within a range above and below an appropriate cooking temperature (for example, 250 to 250 in the case of grilled meat). (300 ° C.), the temperature of the baked surface is too high, and
Prevents the baking time from being too low and taking too long, and the cooking performance from deteriorating. Further, the input can be changed according to the load put on the object to be heated.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to an object to be heated comprising a metal baking plate or a detachable type roster, a heating coil for electromagnetically heating the object to be heated, and a high-frequency current for induction heating applied to the heating coil. A control unit for the flowing inverter, a controller for setting an input to the control unit, and a ceramic plate provided between the object to be heated and the heating coil, the object to be heated is heated by electromagnetic induction heating, and grilled food is cooked on this. A non-magnetic metal bar is provided between the heating coil and the ceramic plate in the heating cooker. One end of the non-magnetic metal bar is disposed at the outer periphery of the heating coil and the other end is disposed at the center of the heating coil. A part of the heater comes in contact with the ceramic plate, and a temperature detector is mounted on the non-magnetic metal bar. It was indirectly detected temperature of the heated body performs output control of the induction heating and controls to a predetermined temperature.

A controller is provided with a plurality of temperature setting keys, and when the temperature of the object to be heated is set by the controller, a plurality of temperature settings (for example, automatic temperature control, high temperature, and heat retention) are performed and each temperature is controlled. And

[0009] The heating cooker constructed as described above uses a detachable roaster to heat an object to be heated consisting of a metal roasting plate or a detachable roaster by electromagnetic induction heating and to cook a grill on this. Even if there is, the temperature detector detects the temperature of the ceramic plate close to the roster, and the control unit sequentially switches the output of electromagnetic induction heating according to the detection signal to indirectly set the temperature of the roasted surface to a predetermined value. It can be controlled to maintain the temperature.

Further, when a large amount of load (for example, low-temperature meat or the like) is applied to the object to be heated such as a rostror, the surface temperature of the object to be heated decreases. In order to restore this temperature to an appropriate temperature for grilled meat in a short time, it is necessary to increase the output of the inverter as compared with normal times. For this reason, when "high temperature" is set by the high temperature key, the output increases for a predetermined time, and the temperature recovery of the object to be heated is hastened. In addition, when "Heat Insulation" is set by the heat insulation key, the heating time to the appropriate temperature of the grilled meat can be shortened by maintaining the temperature of the body to be heated at a low appropriate temperature, and the temperature of the heated body such as a roasted meat at the end of the grilled meat can be manually adjusted. By switching to "warming" in which the temperature becomes low, the generation of smoke is prevented and the power consumption is reduced.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a cooking device according to an embodiment of the present invention, and FIG. 2 is a side view of the cooking device.
FIG. 4 is a cross-sectional view showing an internal structure of the cooking device, FIG. 4 is a cross-sectional view of a main part showing a temperature detection unit of the cooking device, and FIG. 5 is an external view showing an operation unit of a controller of the cooking device. Fig. 6 is a perspective view, and Fig. 6 is a characteristic curve diagram showing the temperature of the sensor unit and the surface temperature of the object to be heated when the cooking device is heated.

In FIGS. 1 and 2 showing the appearance of a heating cooker for cooking grilled dishes for business use, in the center of a table 1, a heated body 2 made of a metal grill for meat or a detachable roaster is mounted. doing. Cabinet 3 is arranged under table 1, and air intake 4
And an exhaust port 24, and an exhaust port 5 is provided at a lower portion. A controller 6 is provided below the table 1 on the side of the cabinet 3.

FIGS. 3 and 4 show the details inside the cabinet 3.
In the above, reference numeral 7 denotes a control unit of an inverter for supplying a high-frequency current to a heating coil 8 for heating the object 2 to be heated, and the controller 6 sets an input to the control unit 7. Reference numeral 9 denotes a ceramic plate provided between the heating coil 8 and the body 2 to be heated. Reference numeral 10 denotes a tray for receiving dirt such as meat juice dripped from the body 2 to be heated, which prevents the dirt from scattering inside. Reference numeral 11 denotes one end of which is fixed to the coil base 12 on the outer side of the heating coil 8, the other end is desired at the center of the heating coil 8, and a part thereof is brought into contact with the ceramic plate 9 so that This is a non-magnetic metal bar that accurately transfers the temperature change.

13 is an oil mist generated in the grilled meat 1
4 and oil fumes 15, etc., and adsorb it,
And 16 are suction ports for sucking the oil mist 14 and the oil smoke 15, and 17 is a suction port for sucking the oil mist 14 and the oil smoke 15 and the like.
It is a passage connecting between them. Reference numeral 18 denotes an exhaust fan that guides the oil mist 14 and the oil smoke 15 together with the exhaust gas into the electric dust collector 13 and discharges the treated exhaust gas to the outside, and 19 adsorbs or decomposes the odor in the exhaust gas from the electric dust collector 13. It is a deodorizing filter.

Therefore, since the oil mist 14 and the oil fume 15 and the like generated from the heated body 2 are removed by the electric dust collector 13 and the deodorizing filter 19, there is no problem even if the oil mist 14 and the odor are discharged indoors. Since there is no need to provide and connect an exhaust passage for outdoor exhaust, there are advantages such as less restrictions on mounting.

Numeral 20 denotes a temperature detector composed of, for example, a thermistor, which is strongly fixed to the non-magnetic metal bar 11 by screws 21 and has a structure for surely catching the temperature change of the non-magnetic metal bar 11. Reference numeral 22 denotes a thin insulator provided between the heating coil 8 and the nonmagnetic metal bar 11. 2
Numeral 3 denotes a cooling fan for the heating coil 8 and a cabinet 3
Air from the room through the air inlet 4 provided at the top of the
The heating coil 8 is cooled and the exhaust port 2 in the upper part of the cabinet 3 is cooled.
4 from the fuselage.

In FIG. 5 showing the operation unit of the controller 6 viewed from the direction A in FIG. 2, reference numeral 25 denotes a power key for turning on the power during operation, and reference numerals 26, 27, and 28 denote temperature setting keys. The temperature setting key 26 is an automatic temperature control key that causes the control unit 7 to control the temperature of the body 2 to be heated to the temperature set by programming the microcomputer by turning on the key “A”.
FIG. 6 shows an example of the temperature of the sensor unit of the temperature detector 20, the output of the inverter, and the temperature characteristics of the object to be heated 2 at this time.

Further, when a large amount of load is applied to the object 2 to be heated, the temperature of the object 2 to be heated is lowered. To recover the temperature in a short time, a strong power is required. The key 27 is a high-temperature key for inputting a signal for outputting this strong power to the control unit 7 by turning on the key "B". The temperature setting key 28 turns on the key "C".
This is a heat keeping key for inputting a signal to the control unit 7 for keeping the body to be heated 2 at about 100 ° C. and shortening the rise time.

29 is an operation stop key, 30 is an up key for increasing power, 31 is a down key for decreasing power, 32 is a power display lamp, 33 is an operation display lamp, 34 is a thermal power display lamp, and 35 is a setting display lamp. It is.

With the above configuration, the object to be heated 2 during heating is
The non-magnetic metal bar 11 itself, which captures a change in temperature rise and a temperature drop when a load is applied on the heated object 2 via the ceramic plate 9, accurately captures a change in the temperature of the heated object 2. The temperature changes are almost the same. Therefore, the temperature detector 2 fixed to the nonmagnetic metal bar 11
0 detects this temperature change. The temperature detected by the temperature detector 20 is fed back to the controller 7 of the inverter by an electric signal. If the detected temperature is lower than the set temperature, the output of the inverter is increased (for example, output 2 = 1, 20).
0W, output 3 = 1,000 W), and if the temperature is equal to or higher than the set temperature, the output is reduced (for example, output 4 = 800 W), and the operation of maintaining the surface temperature of the heated body 2 at the set temperature is performed. is there.

Therefore, the temperature of the heated object 2 which is a detachable roaster is indirectly detected, and the temperature is controlled so as to fall within the upper and lower ranges of the appropriate cooking temperature. Automatic cooking can be performed without the temperature of the baked surface being too high and the burning time being too long, or the baking time being too long and taking too long.

Further, when a large amount of load (for example, low-temperature meat or the like) is applied to the object 2 to be heated, such as a roaster, the surface temperature of the object 2 to be heated decreases. In order to restore this temperature to an appropriate temperature for grilled meat in a short time, it is necessary to increase the output of the inverter as compared with normal times. For this reason, when "high temperature" is set by the high temperature key 27, the output increases for a predetermined time and the recovery of the temperature of the heated body 2 is accelerated. Further, when "Heat preservation" is set by the heat preservation key 28, the temperature of the body to be heated 2 is maintained at a low suitable temperature (for example, 100 ° C.), thereby shortening the heating time up to the proper temperature of the grilled meat (250 to 300 ° C.). By manually switching the temperature of the object 2 to be heated such as a roaster to a low temperature at the end of grilling, the generation of smoke is prevented and the power consumption is reduced.

[0023]

According to the present invention, a non-magnetic metal bar is provided between the heating coil and the ceramic plate, and one end of the non-magnetic metal bar is arranged at the outer periphery of the heating coil and the other end is arranged at the center of the heating coil. In addition, a part of the non-magnetic metal bar is in contact with the ceramic plate, a temperature detector is mounted on the non-magnetic metal bar, and the control unit controls the temperature of the object to be heated by a signal of the temperature detector through the ceramic plate during heating. Is indirectly detected and the output of the induction heating is controlled to control the temperature of the heated object to a predetermined temperature. Therefore, even if the heated object is a detachable roaster, the heated object is heated by the electromagnetic induction heating. In the case of cooking and cooking grilled food on this, although indirect and slightly delayed, by controlling the temperature of the grilled surface of the object to be heated to a predetermined temperature, the temperature of the grilled surface is too high and burnt More or lower Or too long it has come time, that the cooking performance is poor can be prevented.

Further, the controller is provided with a plurality of temperature setting keys, and when the temperature of the object to be heated is set by the controller, a plurality of temperature settings (for example, automatic temperature control, high temperature, and heat retention) are performed and each temperature is controlled. Therefore, even if the surface temperature of the object to be heated is reduced by applying a large amount of load on the object to be heated, such as a rostr, the "high temperature" is set by the high temperature key, and the output is increased only for a predetermined period of time. The body temperature can be restored to the appropriate temperature of the grilled meat in a short time, and by setting "Heat insulation" with the heat retention key, the temperature of the body to be heated is maintained at a low appropriate temperature and the heating time to the optimal temperature of the grilled meat is reduced. And automatic switching of the temperature of the object to be heated, such as roastles, to a low temperature at the end of roasting, which can prevent the generation of smoke and reduce power consumption. And it provides a playable cooker.

[Brief description of the drawings]

FIG. 1 is a plan view of a cooking device showing one embodiment of the present invention.

FIG. 2 is a side view of the cooking device.

FIG. 3 is a sectional view showing an internal structure of the cooking device.

FIG. 4 is a sectional view of a main part showing a temperature detecting unit of the cooking device.

FIG. 5 is an external perspective view showing an operation unit of a controller of the cooking device.

FIG. 6 is a characteristic curve diagram showing a temperature of a sensor unit and a surface temperature of a body to be heated when the cooking device is heated.

[Explanation of symbols]

 2 Heated object 6 Controller 7 Control unit 8 Heating coil 9 Ceramic plate 11 Non-magnetic metal bar 20 Temperature detector 26 Temperature setting key (automatic temperature control key) 27 Temperature setting key (high temperature key) 28 Temperature setting key (heat keeping key) )

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroe Aoki 20 Kita-Sekiyama, Otaka-cho, Midori-ku, Nagoya-shi, Aichi 1 Inside of Electricity Research Laboratory, Chubu Electric Power Co., Inc. (72) Inventor, Katsuaki Nagamatsu Nagoya, Aichi 20 Kitakanyama, Odaka-cho, Midori-ku 1 Chubu Electric Power Co., Inc.

Claims (1)

[Claims] An object to be heated comprising a metal baking plate or a detachable rostrator, a heating coil for electromagnetically heating the object to be heated, and a control unit for an inverter for supplying a high-frequency current for induction heating to the heating coil. And a controller that performs input setting to the control unit, and a ceramic plate provided between the object to be heated and the heating coil, the heating cooker that heats the object to be heated by electromagnetic induction heating, and cooks grilled food thereon. ,
A non-magnetic metal bar (11) is provided between the heating coil (8) and the ceramic plate (9). The non-magnetic metal bar (11) has one end on the outer periphery of the heating coil (8) and the other end on the heating coil. (8) The non-magnetic metal bar (1
Part of 1) is in contact with the ceramic plate (9), and the temperature detector (20) is mounted on the non-magnetic metal bar (11),
The control unit (7) is a ceramic plate (9) when heated.
The temperature of the object to be heated (2) is indirectly detected by the signal of the temperature detector (20) via the controller and the output of induction heating is controlled to control the temperature of the object to be heated (2) to a predetermined temperature. The controller (6) is provided with a plurality of temperature setting keys (26), (27), and (28). When the controller (6) sets the temperature of the object to be heated (2), a plurality of temperature settings (for example, automatic A heating cooker characterized by controlling the temperature by controlling the temperature, high temperature, and heat retention.