JPH11101445A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive the optimum heating in frying, baking, boiling, temperature retaining and the like of food as well as the using convenience of a heating cooker, by a method wherein the heating of a matter to be heated on a heat resistant glass abutted against an oven unit is controlled by one set of temperature sensor with respect to four functions. SOLUTION: A control unit 22 is provided in a part of a lower surface case 16 accommodating an oven unit 3 and abutted against the immediately lower part of a heat resistant glass 2 through springs 6. The control unit 22 is provided with respective keys for starting and stopping of heating and power switching as well as an indicating lamp 26 as fundamental instruments while respective keys for frying, baking, boiling and temperature retaining are provided as heating selecting keys. On the other hand, a heat control body 32 is provided at the side of lamp heaters 4, and the lamp heaters 4 generate heat by excitation through the heating starting key to heat a matter to be heated 1, such as a pot or the like, by the conduction and radiation of heat through the heat resistant glass 2. In this case, upon putting the frying key, for example, heat from the lamp heaters 4 is applied on the temperature sensor 5 properly, and in the case of abnormal heating the lamp heaters 4 are stopped automatically when the detected temperature of the temperature sensor 5 has arrived at a temperature, inputted previously into a microcomputer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater for heating an object to be heated via a heat-resistant glass directly above a lamp heater provided on a stove and emitting infrared rays. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker for controlling the temperature of an object to be heated and for appropriately controlling four heating functions with one temperature sensor.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. Hei 4-236016 discloses a conventional heating cooker of this type. FIG. 7 shows the configuration.
This will be described with reference to FIG.

Conventionally, the temperature of the object 1 to be heated is controlled by a temperature sensor 5 provided below the heat-resistant glass 2.
More heat is added as a bias to control heating.

That is, a stove section 3 is provided below the heat-resistant glass 2 on which the object 1 is placed, and the stove section 3 has a lamp heater 4 and a temperature sensor 5 which is in contact with the lower portion of the heat-resistant glass 2. Is built-in. The stove section 3
Is a dish-shaped vertical section having an opening at the top and having side and bottom surfaces, and is abutted by a spring 6 directly below the heat-resistant glass 2 with a spring spring. The outer wall 7 is made of a metal material and is attached to the inner surface of the outer wall 7. A-shaped heat insulating material A8 and donut-shaped heat insulating material B along
9 and a cylindrical portion 10 at the center of the outer wall 7.
It has. Further, a ring-shaped heat insulating material C11 is provided inside the cylindrical portion 10 (on the side of the lamp heater), and a heat insulating material D12 is provided on the upper surface of the heat insulating material C11 to eliminate a gap between the heat-resistant glass 2 and the heat insulating material C11. Things.

When heating is started by the above configuration, the lamp heater 4 inside the stove section 3 generates heat and the heat-resistant glass 2 just above
And the object to be heated 1 is heated by conduction and radiation. As a specific example, the case of fried food heating will be described. For the temperature sensor 5, most of the radiant heat from the lamp heater 4 is blocked by three types of heat insulating materials, but a small amount of heat is added as a bias to heat the radiated heat. The temperature rise gradient of the oil of the object 1 and the temperature rise gradient of the temperature sensor 5 are approximated (response time delay is reduced).

Accordingly, the heating control is performed by the temperature sensor 5 in order to prevent the ignition of the oil when the fried food is heated.
When the temperature sensor 5 reaches a temperature previously input to the control unit, the lamp heater 4 of the stove unit 3 is automatically stopped to prevent ignition of oil and to ensure safety.

[0007]

However, in the heating control of the above-mentioned conventional cooking device shown in FIG. 7, heating control for preventing overheating of fried food can be performed with one temperature sensor. Multifunctional heating control such as grilling, pot cooking, and heat retention cannot be performed.

[0008] Because of the heating control of fried foods, grilled foods, hot pots, and heat retention, it is necessary to set optimal temperatures and optimal control for each. For example, the temperature setting and the heating control for preventing the ignition of oil during frying are clear as described above, but the overheating of a fluorine-coated roasted meat plate as a heated object during grilling, a frying pan, etc. is prevented. Power and temperature control for heating, in the case of pots, especially in the case of clay pots, increase the power to improve the heating performance
In order to raise the temperature of the heat-resistant glass 2 as much as possible, and to set a temperature control and a heating control to prevent an empty boil, a heating control such as a heat keeping of a coffee server and a heating after a heating of a stew. There were issues that had to be set.

[0009]

In order to solve the above-mentioned problems, the present invention is to heat an object to be heated via a heat-resistant glass located immediately above by a lamp heater for radiating infrared rays provided in a stove section, and to heat the lower part of the heat-resistant glass. The heating of the object to be heated is controlled by a temperature sensor provided in the apparatus, and four functions are controlled by one temperature sensor.

[0010] According to the above-mentioned invention, the heating cooker is capable of performing multifunctional heating such as fried foods, grilled foods, hot pots, and heat retention, and can perform safe and optimal heating, so that it is easy to use.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a heat-resistant glass on which an object to be heated is placed, and a stove section having a built-in heating means below the heat-resistant glass. It has a temperature sensor that controls the heating of the heated material, and controls the heating of four functions with one temperature sensor. It has a configuration of a fried food key, a grilled food key, a hot pot key, and a heat retention key.

[0012] Fried food, grilled meat,
Heating can be controlled appropriately for the four functions of hot pot and warmth, and it is convenient.

The four functions are controlled by a single temperature sensor. In the case of fried food key heating, the temperature previously input to the control unit is set to about 260 ° C., and the heating means is automatically activated when the temperature exceeds this temperature. At the time of the stop and the pottery key, the temperature previously input to the control unit is set to about 230 ° C., and when the temperature is higher than this temperature, the power of the heating means is automatically reduced, and when the temperature is lower than the set temperature, the power is automatically returned to the full power. When the pot key is heated, the temperature input to the pre-control unit is set to about 330 ° C., and the heating means is automatically stopped when the temperature exceeds this temperature. A configuration in which the power of the heating means is turned off when the temperature is above the set temperature, and automatically turned on when the temperature is lower than the set temperature.

[0014] In addition, it is safe because the ignition of oil can be prevented when the fried food is heated, and the roasted meat plate treated with the fluorine coating is properly heated, and the heating performance in the case of heating the clay pot is good. In addition, it is very convenient to keep tableware and cooking warm.

Further, a stove section made of aluminum and a temperature sensor for controlling the heating of the object to be heated by contacting the heat-resistant glass having a thickness of about 4 mm are provided. A configuration in which the power is considerably smaller than the full power (for example, 60 W to 80 W) so that the temperature is substantially constant at 130 ° C. to 130 ° C.

Since the temperature of the heat-resistant glass 2 is set to be substantially constant (110 ° C. to 130 ° C.) at a power of 60 W to 80 W, it is a temperature at which the heat-resistant glass 2 is hardly burned even after touching the heat-resistant glass. It keeps both heat retention. In addition, energy saving heat insulation can be performed in cooking heat insulation (for example, curry, stew).

[0017]

An embodiment of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 is an external view of a heating cooker according to Embodiment 1 of the present invention. FIG. 2 is a sectional view of the cooking device. FIG. 3 is an external view of a stove section of the cooking device. FIG. 4 is a diagram of an operation unit of the cooking device. FIG. 5 is a control block diagram of the cooking device.

One temperature sensor 5 controls heating of four functions of fried food, grilled meat, hot pot, and heat retention.

1 to 5, a heat-resistant glass 2 on which an object to be heated 1 is placed and which transmits infrared rays is integrated with an upper case 13 and an adhesive 14, and a stove section 3 and a cooling fan 15 are incorporated. The lower case 16 is fixed and connected with screws 17.

The stove section 3 is provided below the heat-resistant glass 2 which transmits infrared rays, and the outer wall 7 has an open upper part and has a parabolic shape centered on a lamp heater 4 for heating the bottom face with two infrared rays. At the same time, an aluminum material having a high reflectance with respect to infrared rays is coated with sodium silicate 18 on the inner wall surface.

Further, the stove section 3 is brought into contact with the spring spring A6 immediately below the heat-resistant glass 2, and the bottom of the central portion is locally raised to a raised bottom section 19, and this raised bottom section 19 is formed.
An opening 20 is provided. Temperature sensor 5 has raised bottom 1
9 and the spring B2.
1 is urged to contact the heat-resistant glass 2.

The operation unit 22 provided in a part of the upper case 13 has a heating start key 23, a heating stop key 24, a power switching key 25, and a display lamp 26. 28, hot pot 2
9 and a heat retention key 30. 31 is a microcomputer.

A heat suppressor 32 is provided on the raised bottom 19 of the stove 3 on the side of the lamp heater 4.

The thickness of the heat-resistant glass 2 used in this type of heating cooker is about 4 mm. The heat-resistant glass 2 is hardly cracked even when a pot or the like is dropped. It is ceramicized.

The operation of the configuration shown in FIGS. 1 to 5 will be described. When the heating cooker presses the heating start key 23 to start energization, the plurality of lamp heaters 4 inside the stove unit 3 generate heat, pass through the heat-resistant glass 2 immediately above, and conduct and radiate the object 1 to be heated such as a pan. Heated. It will be described sequentially.

(1) In the fried food key 27, the heat from the lamp heater 4 is appropriately added to the temperature sensor 5 by the heat suppressor 32, so that the temperature of the tempura of the heated object 1 and the temperature rise gradient of the fried oil and the temperature sensor 5 The temperature rise gradient is approximated (response time delay is reduced). As a result, if the temperature of the oil is satisfactory at an appropriate temperature (for example, 180 to 200 ° C.), the fryer can be heated sufficiently, and the temperature is abnormally overheated due to some condition, the temperature is previously input to the microcomputer (for example, 260 ° C.). As a basic function, when the temperature of the temperature sensor 5 reaches, the lamp heater 4 as a heating means is automatically stopped to prevent ignition of oil.

(2) In the case of heating a roasted key, for example, in the case of heating a roasted meat plate, when the load is small, if the temperature sensor 5 automatically stops the lamp heater 4 at 260.degree. In addition, the temperature of the roasted meat plate becomes higher due to overshoot, and the fluorine coating becomes overheated and discoloration and other problems occur. Is automatically lowered, and when the temperature becomes lower than about 240 ° C., the power is automatically returned to full power. In addition, frying pan heating is good for stir-fry heating that generates moisture,
Heating that does not generate moisture (eg, wiener, sesame)
The same can be said.

(3) When the pot key is heated, in the case of an earthen pot, the power is increased to improve the heating performance even slightly, or the temperature of the heat resistant glass 2 is increased even slightly. But,
This is because the temperature sensor 5 reached 260 ° C. during the heating of the pot and the lamp heater 4 was automatically stopped, so that the earthen pot could not be heated satisfactorily. Therefore, in order to raise the set temperature of the temperature sensor 5, a versatile and low-cost thermistor (for example, one having a temperature of 350 ° C. or less) is used. When this happens, the power of the lamp heater 4 is automatically reduced, and when the temperature falls below about 330 ° C., the power is automatically returned to full power.

(4) Insulation is realized by heating and heating tableware (eg, coffee server, teapot, sake liquor, ceramic container) and cooking and heating (eg, stew, curry, meat and potatoes). In (a) for keeping the temperature of a coffee server, a teapot, etc., the temperature previously input to the control unit is set to about 80 ° C., and the power of the heating means is turned off when the temperature is higher than the set temperature and automatically turned on when the temperature is lower than the set temperature. Control. (B) When the temperature is kept as it is after heating such as stew or meat potato is completed, the temperature sensor 5 is in a high temperature state, and the temperature previously input to the control unit is about 80 ° C. or more, and The power remains off. Thereafter, when the temperature decreases and becomes lower than about 80 ° C., the power is automatically turned off.
N control.

As described above, according to the first embodiment,
(1) Fried food, grilled meat, hot pot,
The four functions of heat retention and heat control are appropriately controlled. (2) It is one temperature sensor and can control heating with a simple configuration. (3) Appropriate heating of the grilled meat plate that has been treated with fluorine coating is possible, and the heating performance can be slightly improved in the case of clay pot heating. (4) It is safe because oil ignition can be prevented when fried food is heated. (5) It becomes very convenient to keep tableware warm (for example, chawanmushi, gratin, etc.) or to heat a coffee server, a teapot, etc., when the user wants to eat hot forever.

(Embodiment 2) FIG. 6 is an external view of an example of keeping the tableware of a heating cooker according to Embodiment 2 of the present invention.

According to the present invention, a heating function is added to the heating cooker, and the power is controlled to 60 W to 80 W during the heating and heating so that the power of the heat resistant glass 2 is controlled to 110 ° C. to 130 ° C. thing. This will be described with reference to FIGS.

At the time of heating and heating, the temperature previously input to the control unit is set to about 80 ° C., and the power of the heating means is turned off when the temperature is higher than the set temperature and automatically turned on when the temperature is lower than the set temperature.
Control.

Conventionally, as a heating cooker having a heat retaining function, there is an electric heating stove in which an electromagnetic induction heater or a sheathed heater is formed into a spiral type. The former cannot directly heat tableware such as ceramics and heat-resistant glass due to the heating principle. In the latter, since the heating surface was not flat, there was a possibility of slipping down, and the tableware was not kept warm. In other words, both lacked aptitude for keeping dishes warm.

The present invention solves these problems. (1) An infrared heating type halogen lamp heater capable of directly heating and keeping the tableware such as ceramics and heat-resistant glass. (2) It is a flat heating top using heat-resistant glass 2 and can keep warm without tableware slipping off. (3) The temperature of the heat-resistant glass 2 is set to 110 ° C. to 130 ° C. for keeping the temperature of the coffee server, the teapot, etc., so that the temperature is hardly burned even if the heat-resistant glass 2 is touched after the temperature keeping. For this reason, the power of the heat keeping key 30 is set to 60 W to 80 W so that the tableware can be kept warm with safety. This is because the heat-resistant glass 2 used for this type of heating cooker has a thickness of about 4 mm, and is combined with a stove section 3 made of an aluminum material having high reflectivity to infrared rays and coated with sodium silicate 18 on the inner wall surface. Optimized for (4) When cooking and keeping heat after heating a stew or the like, the heat-resistant glass 2 is immediately after heating and has a high temperature. Therefore, there is no need for heat-retention power because the heat is kept by this high-temperature heat, and when the temperature of the heat-resistant glass decreases, power for heat-retention is required. For this purpose, the temperature previously input to the control unit 31 is set to 80
℃ and the power of the heating means is O
The power is automatically turned on when the temperature is lower than the set temperature by FF.

That is, the temperature sensor 5 has two functions in heating the heat keeping key 30. (1) When the temperature of the heat-resistant glass 2 becomes abnormally high, the power is controlled by heating to secure safety. I have. (2) In the case of the heat keeping key 30, the temperature of the heat resistant glass 2 is substantially constant by the temperature sensor 5 (110).
(C to 130C).

As described above, according to the second embodiment,
(1) The temperature of the heat resistant glass 2 is substantially constant (110 ° C. to 130 ° C.).
° C), the temperature is low enough to cause a burn even if the heat-resistant glass 2 is touched after the temperature is kept, and it is safe and can keep the temperature. (2) Since the automatic operation is performed according to the heating load of the content to be kept warm, it is economical, and it is convenient with little overheating. (3) Heat insulation for cooking (for example, curry, stew)
Energy conservation and heat retention can be achieved.

[0039]

As described above, according to the heating cooker of the present invention, the following effects can be obtained.

(1) The four functions of fried food, grilled meat, hot pot, and heat retention are properly controlled by one temperature sensor. The heating can be controlled with a simple structure, and the fluorine coating process can be performed. The good performance of heating the roasted meat plate and frying pan, and the heating performance of the earthen pot is good. In addition, it is safe because it can prevent oil from igniting when heating fried foods. It becomes convenient.

(2) The temperature of the heat-resistant glass is 110 ° C. to 13 ° C.
In order to keep the temperature at 0 ° C, it is safe to burn without touching the heat-resistant glass after the temperature is kept.
Energy saving heat can be maintained in cooking heat (for example, curry, stew).

(3) Since the temperature of the heat-resistant glass is substantially constant (110 ° C. to 130 ° C.) when the power is 60 W to 80 W, both safety and heat retention are achieved.

[Brief description of the drawings]

FIG. 1 is an external view of a heating cooker according to a first embodiment of the present invention.

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

FIG. 3 is an external view of a stove section of the cooking device.

FIG. 4 is an enlarged view of an operation unit of the cooking device.

FIG. 5 is a control circuit block diagram of the cooking device.

FIG. 6 is a diagram illustrating an example of heat retention of tableware according to the second embodiment of the present invention.

FIG. 7 is a cross-sectional view of a conventional heating cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heated object 2 Heat resistant glass 3 Stove part 4 Heating means (lamp heater) 5 Temperature sensor 27 Fried food key 28 Roasted meat key 29 Pan key 30 Heat insulation key

Claims (3)

[Claims] An object of the present invention is to provide a heat-resistant glass on which an object to be heated is mounted, and a stove section having a built-in heating means below the heat-resistant glass. It is equipped with a sensor and controls the heating of four functions with one temperature sensor, the first key is fried food, the second key is grilled, the third key is pot, the fourth key is A heating cooker with a heated configuration. 2. A single temperature sensor controls four functions. In the case of fried food key heating, the temperature previously input to the control unit is set to about 260 ° C., and the heating means is automatically activated when the temperature exceeds this temperature. In the case of the stop and the pottery key, the temperature previously input to the control unit is set to about 240 ° C. When the temperature exceeds this temperature, the power of the heating means is automatically reduced, and when the temperature is lower than the set temperature, the power is automatically returned to the full power. When the pan key is heated, the temperature input to the pre-control unit is set to around 330 ° C, and the heating means is automatically stopped when the temperature is higher than this temperature. For the heat-retaining key, the temperature previously input to the control unit is 80 ° C. A heating cooker having a configuration in which the power of the heating means is turned off when the temperature is equal to or higher than the set temperature and automatically turned on when the temperature is lower than the set temperature. 3. A stove part made of aluminum and a temperature sensor for controlling the heating of an object to be heated by contacting the heat-resistant glass having a plate thickness of about 4 mm. The power is set to 60 W to 80 W so that the temperature is substantially constant at a temperature of from 130 to 130 ° C.
Or the heating cooker according to 2.