JPH06337116A - Heat-cooking apparatus - Google Patents

Abstract

PURPOSE:To perform cooking in a pot, the cooking of rice or the like by microwave heating, make it very easier to stir foodstuffs in a pot during the cooking and grasp cooking conditions, and favorably keep the cooked foodstuffs hot. CONSTITUTION:A main body 1 of a heat-cooking apparatus is formed into a shape wherein the upper face of the main body is openable. A pot 21 made of a microwave transmitting material is placed inside the main body 1, and a magnetron 6 is provided therein so that microwaves are applied to the interior of an inner case 3 through a waveguide 7 and a microwave supply port. Furthermore, a heater 12 is disposed on the inner case 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker improved so as to be suitable for so-called pot cooking and rice cooking.

[0002]

2. Description of the Related Art Conventionally, in a microwave oven which is a heating cooker, the front surface of the range body is open, and the food to be heated is accommodated in the heating and cooking chamber of the range body through the front opening. It is heated by the microwave of the magnetron. In this microwave oven, a pot made of a microwave transparent material may be used to cook or cook rice.

[0003]

However, this type of microwave oven has the following problems when it is boiled and cooked using a pot. That is, the pan is covered with a pan lid and housed in a heating and cooking chamber for microwave heating. In the course of cooking, the inside of the pan is often agitated, ingredients are added, and the cooking status is observed. At this time, it is necessary to take out the pan from the cooking chamber one by one because the above-mentioned stirring, addition of ingredients, and grasping the cooking situation cannot be performed while the pan is housed in the cooking chamber, which is troublesome.
In addition, there is a request to keep the temperature of the pot food and rice cooked when it is cooked. In microwave heating in a microwave oven, the heating intensity is matched to that of the pot food and rice cooked, and the microwave heats the cooked food. Since the object is heated directly, it may be overheated during heat retention.Also, it may be possible to control the interruption of the magnetron, but overall, even if the heating amount is appropriate, the magnetron energization Sometimes, too much heating may occur. As described above, in the microwave oven, it is difficult to keep warm food such as hot pot dishes.

The present invention has been made in view of the above circumstances, and an object thereof is not only to cook a pot dish or cooked rice by microwave heating, but also to stir and cook the pot in the middle of cooking. It is an object of the present invention to provide a heating cooker in which the situation can be easily grasped and the heat can be kept well.

[0005]

The cooking device according to the present invention comprises:
A main body having an outer case and an inner case and having an open upper surface; a pan made of a microwave transparent material disposed in the inner case; and a lid for opening and closing the upper surface opening of the main body,
A microwave supply port formed to face the inside of the inner case, a magnetron provided to irradiate microwaves into the inner case through the waveguide and the microwave supply port, and the inner case It is characterized by comprising a heater attached to the.

In this case, a temperature sensor for detecting the temperature of the pot may be provided, and a control means for controlling the magnetron or the heater in accordance with the detection result of the temperature sensor may be provided. Furthermore, a hollow fixed shaft is provided at the bottom of the inner case, and a hollow rotary shaft is fitted around the fixed shaft, and a rotary plate that supports a pan inside the inner case is connected to the rotary shaft. A structure may be used in which the moving shaft is supported and provided in the hollow portion of the fixed shaft so that the upper end side is moved and biased in the direction of abutting the outer bottom part of the pan, and the temperature sensor is provided at the upper end part of the moving body.

[0007]

According to the above-mentioned means, the main body is formed in the shape of the upper opening, the pot made of the microwave transmitting material is arranged in the main body, and the upper opening is opened and closed by the lid. When opened, the pan can be viewed from above. Therefore, when performing cooking such as stirring the inside of the pot, adding an ingredient, or grasping the cooking status when cooking a pot dish or cooking rice, this intermediate work can be performed without taking out the pot.

Further, according to the above means, since the heater is provided in the inner case of the main body, it is possible to heat the cooked food in the pan indirectly by heating the pan entirely from the inner case. It is possible to achieve proper heat retention while suppressing excessive heating.

In this case, if the temperature sensor for detecting the temperature of the pot is provided and the control means for controlling the magnetron or the heater is provided according to the detection result of the temperature sensor, the heating strength and the heat retaining strength can be controlled appropriately. As a result, it is possible to perform cooking and heat retention more favorably.

Furthermore, by supporting the pan on a rotating dish, it is possible to rotate the pan for uniform cooking and heat retention. In this case, the bottom of the inner case is hollow. -Like fixed shaft is provided, a hollow rotary shaft is fitted around the fixed shaft, and a rotary dish that supports a pot inside the inner case is connected and supported to the rotary shaft, and the hollow shaft of the fixed shaft is supported. By providing a moving element that is urged to move so that the upper end side comes into contact with the outer bottom of the pan, and providing a temperature sensor at the upper end of this moving element, the pan is supported and rotated by the rotating plate. Even under the circumstances, the temperature sensor is located at the center of the rotary plate, that is, at the center of rotation of the pan, so that the temperature of the pan can be satisfactorily detected without causing displacement of the temperature sensor.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, referring to FIG. 1 to FIG.
Is a plastic outer case 2 with an open top.
And an inner case 3 made of a conductor.
A radio wave sealing portion 4 is formed on the outer periphery of the upper end portion of the inner case 2, and a microwave supply port 5 is formed at a predetermined portion of the bottom portion as shown in FIG.

A magnetron 6 is arranged between the bottom of the outer case 2 and the bottom of the inner case 3, and the antenna 6a of the magnetron 6 is a waveguide provided by removing the central portion of the inner case 3. It communicates with the microwave supply port 5 via 7. A cooling fan 8 is provided between the outer case 2 and the inner case 3 as shown in FIG. 2, and the wind generated by the cooling fan 8 is supplied to the magnetron 6 by a duct 9. It is designed to cool this.
Further, the wind that has cooled the magnetron 6 is guided by the wind guide 1
0 is guided to the inside of the inner case 3 through the ventilation hole 11 formed in the inner case 3.
Further, a heater 12 for heat retention is wound around the outer peripheral surface of the inner case 3.

A lid 13 for opening and closing an upper surface opening of the main body 1 is rotatably provided by a hinge 13a. The lid 13 is made of a plastic outer lid body 14 and a conductive inner lid body. And the inner lid 15
Is formed in a concave shape. The central portion of the outer lid body 14 is composed of a transparent member 16, and a vent hole 13b is formed on the hinge 13a side. Also, the inner lid 15
A punching metal 17 having a large number of vent holes 17a is provided in the central portion of the figure.

Further, as shown in FIG. 2, a lamp 18 is provided outside the inner lid body 15, and the inner lid body 1 is provided.
5, a light transmitting hole 19 is formed. A rotary plate 20 is provided on the bottom of the inner case 3, and a pan 21 is placed on the rotary plate 20. The pot 21 is provided with a pot lid 22, both of which are made of a microwave transmitting material, and in this case, made of transparent glass. A flange-shaped handle portion 23 is formed on the peripheral edge portion of the upper end opening of the pot 21, and a separation distance L between the handle portion 23 and the upper end of the inner case 3 is set to a size that allows the hand to enter. .

Next, referring to FIG. 4, the support structure of the rotary plate 20 will be described. That is, at the bottom of the inner case 3,
A hollow fixed shaft 24 is provided via a mounting frame 25, and the fixed shaft 24 penetrates into the inner case 3 through a through hole 26 formed in the bottom of the inner case 3. A hollow rotating shaft 2 is provided around the fixed shaft 24.
7, the rotary plate 20 is connected and supported by the rotary shaft 27 inside the inner case 3. The rotating shaft 27 is attached to the outer case 2 via a mounting tool (not shown).
It is adapted to be rotationally driven by a rotary plate driving motor 28 attached to the belt via a belt transmission mechanism 29.

In the hollow portion of the fixed shaft 24, there is provided a rod-shaped moving element 31 which is urged by a spring 30 in a direction in which the upper end side comes into contact with the outer bottom portion of the pan 21, and the upper end portion of the moving element 31 is provided. Is provided with a temperature sensor 33 via a holder 32. Further, the lower end portion 31a of the moving element 31 is
A pan sensor 34 is provided which protrudes downward from the fixed shaft 24, and which is located at the protruding portion and is composed of a photointerrupter for detecting the downward movement of the lower end portion 31a. Then, when the pan 21 is placed on the rotary plate 20, the mover 31 is lowered, and the lowering of the lower end portion 31a of the mover 31 is detected by the pan sensor 34. In other words, the pan 21 is placed on the rotary plate 20. Is being detected.

Further, a substantially fan-shaped marking 35 is formed on the upper surface of the rotary plate 20, and a protrusion 36 is formed on the lower surface.
Is projected downward. A position sensor 37 that detects the protrusion 36 is provided on the bottom of the inner case 3. The position sensor 37 detects the protrusion 36 at a position where the marking 35 on the rotary plate 20 faces the microwave supply port 5. Note that FIG.
As shown in FIG. 3, the outer case 2 is provided with a control unit 38 having an electronic circuit therein, and the front surface of the control unit 38 is an operation panel 39.

Next, referring to FIG. 5 showing the electrical configuration, a control device 40 as a control means comprises a microcomputer, an A / D converter and a drive circuit, which includes the temperature sensor. Signals from the pan 33, the pan sensor 34, and the position sensor 35 are given, and various switches 41 provided on the operation panel 39 and the lid 1 are provided.
A signal from the lid switch 13c for detecting the opening / closing of 3 is provided. Then, this control device 40
Controls the magnetron 6, the heater 12, the lamp 18, the cooling fan motor 8a of the cooling fan 8 and the buzzer 42 according to each input according to the operation program stored inside, and at the same time, displays the display 43 provided on the operation panel 39. It is designed to be controlled. The various switches 41 include, for example, "pot cooking", "rice cooking", and "manual heat retention".
It also includes a menu selection switch for selecting a menu such as "warm", a start switch, a stop switch, a heating strength adjustment switch, and a heat retention strength adjustment switch.

The operation of the above configuration will be described together with the control content of the control device 40. Now, for example, when "pot cooking" is selected and the start switch is operated, the control device 40 first causes the pot 2 to output based on the signal from the pot sensor 34.
It is determined whether 1 is placed on the rotary plate 20 and whether the lid 13 is closed by the signal from the lid switch 13c. When the pot 21 is placed and the lid 13 is closed, the magnetron is placed. 6 is driven, the cooling fan motor 8a is driven to operate the cooling fan 8, and further the rotary plate driving motor 28 is driven, and the lamp 18 is also energized to start heating and cooking. If the pan 21 is not placed or the lid 13 is opened, the heating cooking will not start.

By driving the magnetron 6, microwaves are supplied into the inner case 3 through the waveguide 7 and the microwave supply port 5, and the food to be heated in the pan 21 is heated. In addition, the operation of the cooling fan 8 causes the wind to move as shown in FIG.
And, as indicated by the arrow in FIG. 2, the magnetron 6 is supplied through the duct 9 to be cooled (heat exchanged), and then enters the inner case 3 through the air guide 10 and the ventilation hole 11. , And goes out through the ventilation holes 17a and 13a. As a result, the magnetron 6 is cooled, and the hot air after heat exchange is supplied to the inside of the inner case 3 to contribute to the heating of the food to be heated.

When the lamp 18 is energized and emits light, the light illuminates the inside of the inner case 3 through the light-transmitting hole 19, and in this case, the user can see the transparent member 16 of the lid 13.
The inside can be seen through the vent holes 17a of the punching metal 17.

When the cooking condition inside the pan 21 is to be seen during such cooking, the pan 21 can be opened by opening the lid 13.
Can be viewed from above, and the pot lid 22 can be removed to view the inside of the pot 21 (without removing the pot 21). When the lid 13 is opened, the lid switch 13
The heating operation is temporarily stopped based on the signal from c.

Further, during the cooking process, the control device 40 displays the heating intensity status on the display 43 based on the signal from the temperature sensor 33. When the heating intensity adjusting switch is operated while seeing the display contents of the vessel 43, the heating intensity is adjusted by driving and controlling the magnetron 6 according to the operation.

When the heating and cooking are completed, the user operates the stop switch, and the control device 40 stops the heating and cooking based on the operation of the stop switch.
After that, when "manual heat retention" is selected and the start switch is operated, the control device 40 energizes the heater 12 to perform heat retention. At the time of this heat retention, the control device 40 displays the heat retention strength status on the display 43 based on the signal from the temperature sensor 33. Therefore, the user sees the display content of this display 43. When the heat retention strength adjusting switch is operated, the heater 12 is driven and controlled according to the operation to adjust the heat retention strength.

When "rice cooked" is selected and the start switch is operated, rice is cooked by the magnetron 6 and after the rice is cooked (the temperature sensor 33 finishes the rice cooked).
Is automatically detected by the dry-up detection by the heater 12).

At the end of any cooking, the rotary plate driving motor 28 is slightly driven to rotate the rotary plate 20 so that the marking 35 thereof reaches the position shown in FIG. . Rotating plate 20 at this time
Is detected based on the signal from the position sensor 37.

Furthermore, when the cooked food (eg milk) is heated without using the pan 21, the user places the cooked food on the marking 35. When the user selects "warming" and operates the start switch, the control device 40 causes the pan 2 to respond to the signal from the pan sensor 34.
It is detected that there is no arrangement of 1 and the rotary plate drive motor 2
8 does not drive, but drives the magnetron 6. in this case,
Since the food to be heated is placed on the marking 35, it is located in the vicinity of the microwave supply port 5, so that microwave irradiation is concentrated. As a result, the heating efficiency for the cooked food is improved.

According to this embodiment as described above, the main body 1 is formed in an upper surface opening shape, and the pan 21 made of a microwave transmitting material is arranged in the main body 1, and the upper surface opening is covered with the lid 1.
Since it was opened and closed by 3, if you open the lid 13,
The pan 21 can be viewed from above. Therefore, when performing cooking such as stirring the inside of the pot 21, adding an ingredient, or ascertaining the cooking status when cooking a pot dish or cooking rice, it is possible to perform this intermediate work without removing the pot 21. it can.

Further, the heater 12 is attached to the inner case 3 of the main body 1.
Since the pan 21 is provided, the pan 21 can be entirely heated from the inner case 3 to indirectly heat the food to be heated in the pan 21, and thus proper heat retention can be achieved while suppressing excessive heating. Becomes

In this case, since the temperature sensor 33 for detecting the temperature of the pan 21 is provided and the magnetron 6 or the heater 12 is controlled according to the detection result of the temperature sensor 33, the heating strength and the heat retaining strength are appropriately controlled. Thus, the cooking and the heat retention can be performed even better.

Further, by supporting the pan 21 on the rotary plate 20, the pan 21 can be rotated and uniform cooking and heat retention can be achieved. In this case, the bottom of the inner case 3 is A hollow fixed shaft 24 is provided, a hollow rotary shaft 27 is fitted around the fixed shaft 24, and the rotary plate 20 supporting the pan 21 inside the inner case 3 is connected and supported by the rotary shaft 27. Then, in the hollow portion of the fixed shaft 24, there is provided a moving element 31 whose upper end side is urged to move in a direction of contacting the outer bottom portion of the pan 21, and a temperature sensor 33 is provided at the upper end portion of the moving element 31. By the pot 2
Even when 1 is supported by the rotating dish 20 and rotated, the temperature sensor 33 is located at the center of the rotating dish 20 and thus at the center of rotation of the pan 21.
3 can detect the temperature of the pan 21 satisfactorily without causing a positional shift.

[0032]

As is apparent from the above description, the present invention can obtain the following effects. According to the first aspect of the invention, the pot can be viewed from above by opening the lid. Therefore, when cooking a pot dish or cooking rice, the inside of the pot is agitated, an ingredient is added, and the cooking status is grasped. It is possible to perform this intermediate work without taking out the pot when performing the intermediate work such as. Furthermore, the heater can heat the pan entirely from the inner case to indirectly heat the food to be heated in the pan, and thus, it is possible to achieve proper heat retention while suppressing excessive heating.

According to the second aspect of the present invention, the heating strength and the heat retaining strength can be appropriately controlled, and the cooking and the heat retaining can be more favorably performed.

According to the third aspect of the present invention, by supporting the pan on the rotary plate, the pan can be rotated and uniform cooking and heat retention can be achieved. Even if it is supported and rotated by the temperature sensor, the temperature sensor is located at the center of the pan and therefore at the center of rotation of the pan, so that it is possible to prevent the temperature sensor from being displaced. The temperature can be detected well.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention.

[Fig. 2] Front view in vertical section

FIG. 3 is a cross-sectional plan view.

FIG. 4 is a vertical cross-sectional side view showing a rotary disc support structure portion.

FIG. 5 is a block diagram of an electrical configuration.

[Explanation of symbols]

1 is a main body, 2 is an outer case, 3 is an inner case, 5 is a microwave supply port, 6 is a magnetron, 8 is a cooling fan, 12 is a heater, 13 is a lid, 18 is a lamp, 20 is a rotating dish, 21
Is a pot, 22 is a pot lid, 24 is a fixed shaft, 27 is a rotary shaft, 31
Is a mover, 33 is a temperature sensor, 34 is a pan sensor, 35 is a marking, 37 is a position sensor, and 40 is a control device (control means).

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location A47J 27/00 8114-4B

Claims (3)

[Claims] 1. A main body having an outer case and an inner case and having an open upper surface, a pan made of a microwave transparent material disposed in the inner case, and a lid for opening and closing the upper surface opening of the main body. A microwave supply opening formed to face the inside of the inner case; a magnetron provided to irradiate microwaves into the inner case through the waveguide and the microwave supply opening; A heating cooker comprising a heater attached to a case. 2. A temperature sensor for detecting the temperature of the pan is provided.
The heating cooker according to claim 1, further comprising control means for controlling the magnetron or the heater according to the detection result of the temperature sensor. 3. A hollow fixed shaft is provided at the bottom of the inner case, and a hollow rotary shaft is fitted around the outer circumference of the fixed shaft. A rotary dish supporting the pan is connected and supported, and in the hollow portion of the fixed shaft, a moving element is provided which is urged to move so that the upper end side abuts the outer bottom of the pan. The heating cooker according to claim 2, wherein a sensor is provided.