JPH04208122A - Automatic fish broiling apparatus - Google Patents

Abstract

PURPOSE:To allow anyone to broil fish in good workmanship by mounting a temp. sensing device, performing control of a heater, sensing if a grill door is opened or shut, conducting eventually necessary correction, judging how the fish is broiled, and informing each process with a display device. CONSTITUTION:Water is put in 21 grill plate 4, and a grill 10 is set and accommodated in the body 6 of a grill case, followed by starting of the sequence of automatic fish broiling. A heater 7 is fed with current at a current feed rate of 100% until the internal temp. (GT) of the grill case body 6 sensed by a temp. sensing device 8 attains a specified level GTO. After GTO is exceeded, current is fed with a rate of 85%, and preheating is made until the GT attains another specified level GT1. The preheating gives an effect of making uniform the internal temp. of the grill chamber and another effect of preventing hot attachment of fish skin to the heated grill 10. With preheating, the GT becomes GT1, and a microcomputer 18 gives a message #'place fish' on a display device 24 with twinkling LEDs through a display device circuit 23 with the aid of a temp. sensing circuit 20.

Description

[Detailed description of the invention] Industry-1 This field of use The present invention relates to an automatic grilled fish cooker.

Conventional Technology With conventional fish grilling devices, users have to turn the fish over and judge the doneness of the fish based on their experience.

Problems to be Solved by the Invention In conventional fish grilling devices, the user determines the degree of grilling, so there is considerable variation in the degree of grilling, such as sometimes burning the fish or half-cooking the fish. It was something that would happen. There is also the problem that when the fish is turned over halfway through, the internal temperature changes depending on the time and the time required to grill the fish varies. Furthermore, it was not possible to safely perform other cooking tasks while grilling fish.

Means for Solving the Problems In order to eliminate variations in the quality of grilled fish, the present invention installs a temperature detection device at an appropriate position in the grilled fish cooker, and further changes the voltage applied to the heater, which is the heat source. Detect and control the heater using these detected temperatures and detected voltages,
Furthermore, the opening/closing of the grill 1 hair is detected and corrected, the degree of grilling of the fish is determined, and each process is notified on a display device.

As described in the operation description, a temperature detection device and a voltage detection circuit are installed at appropriate positions of the fish frying cooker, a door opening/closing detection device, and a control circuit that controls the heater, which is the heat source, based on these detection signals. The system detects the temperature inside the grilled fish cooker and the opening/closing of the door to determine the degree of grilling of the fish.
In addition, by detecting voltage fluctuations and varying the amount of power for the heater, the optimal amount of power is always maintained, and the time required to flip the fish is adjusted.
A display device informs you of the time when the fish is ready, ensuring that the fish is always well-cooked.

Example An embodiment of the present invention has been described above.

Fig. 3 is a perspective view of an electric stove equipped with an automatic fish grilling cooker according to an embodiment of the present invention, in which a main body 2 of the stove is installed in a system kitchen 1, and 3 indicates an automatic fish grilling cooker. This is the grill part. Further, 24 is a display device provided on the front surface of the main body 2.

FIG. 2 is a side sectional view of the grill section 3, showing a grill case main body 6 whose 1° surface, side surface, and bottom surface are plate-like and approximately box-shaped.
At the rear of the grill case body 6, there is an exhaust hole 5 for discharging smoke from grilled fish. A creel door 9 is provided at the front, and a grill heater 7c or lower consisting of a sheathed heater is attached to a portion of the grill. Reference numeral 4 denotes a grill plate, which is integrally connected to the grill I with 79 and is detachable within the grill case main body 6. Furthermore, 8 is a temperature detection device attached to the center of the side surface of the grill case body 6. Further, 10 is a grill grid placed on the grill plate 4. Reference numeral 25 denotes a door opening/closing detection device (hereinafter referred to as I-assensor) for detecting opening/closing of the creel 1-a 9.

FIG. 3 is a block diagram showing the configuration of a control circuit related to the grill section of the electric stove. 11 is a commercial power supply, and 12 is a main switch that controls the supply of power to the entire electric stove. 13 is a 1-line controller that controls the heater 7;
Controlled by 19 TRIAC IIi [4 dynamic circuits. A power transformer 14 has two secondary output systems, one of which supplies a DC stabilized voltage to the entire control circuit in a power circuit 17 via a diode bridge of 16. The other secondary side output of the power transformer 14 is connected to a voltage detection circuit 15 which is a power supply voltage detection means, and detects fluctuations in the primary side voltage. 20 is a temperature detection circuit that converts the temperature obtained by the temperature detection device 8 into an electrical signal;
21 is a display circuit for the stove operation section, 22 is an input circuit for various keys, 23 is a display device circuit, and the display is on the display device 24 or I.
It is output by flashing 1, ED, etc. A door opening/closing detection circuit 26 includes a door sensor 25 for detecting opening/closing of the grill door 9. 18 is a microcomputer that controls all of these.

FIG. 4 is a sequence showing the relationship between the temperature detected inside the grill and the time for grilling fish.

In the embodiment of the present invention configured as described below, water is first poured into the grill plate 4, and the grill 10 on which the fish is placed is placed on the grill plate 1.
~, then store it in the grill case main body 6 and start the automatic fish grilling sequence. As shown in FIG. 4, first, the heater 7 is energized at 100% energization rate until the temperature (hereinafter referred to as GT) inside the grill case body 6 (grill storage) detected by the temperature detection device 8 reaches a predetermined temperature GT. . GT
After exceeding 0, the current is applied at an energization rate of 85% to preheat GT until it reaches a predetermined temperature GT. This preheating has the effect of uniformizing the temperature inside the grill and preventing the skin of the fish from sticking by heating the grill 10. Due to this preheating, GT becomes GTl and at the same time the temperature detection circuit 2
0, the microcomputer 18 sends the display circuit 23 to the display 24, which flashes the message "Please put the fish in" using the LED. Next, after the user puts the fish in, the energization rate of the heater 7 remains at 85% until GT reaches the predetermined temperature GT2, and the time t1 until GT reaches from GTl to GT.
is measured and stored in the microcomputer 18.

Here, tl varies depending on the number, size, and type of fish, the amount of water put in the grill plate 4, and the room temperature. For example, if there are many fish, t will be long, and if the size is small, it will be short; As a result of the grilling experiment, the time T□ required to turn the fish over based on the varying time t1 is T x ”” j t +
At t2, it has been found that the time taken to finish -1 - after turning over again is 1", which is almost exactly determined by = 1" u x α□ (α□ is a constant that has been determined and set). .

Further, △ and □, △t, and 2 are door opening/closing times, which are detected by the 1-a sensor 25 and input to the door opening/closing detection circuit 2 (microcomputer via i) 8. Therefore, by starting the count of Go□, r, from the role of the door opening/closing time of △L1 and Δt2, T,... T, can be controlled.

In this way, the temperature at which the fish is placed is from GT 1 to GT 2.
It is important to accurately measure the time required for the temperature to rise (1, 1), and for this purpose, during preheating] 1, the temperature rises from GT to GT2 due to the rapid rise in temperature. It is necessary to suppress the amount of heating to avoid variations in the internal temperature and to avoid errors in the measurement of □, and in this embodiment, the heater 7 is controlled at an energization rate of 85%. If this energization rate is further reduced, the opening side of TL will be more accurate, but there is also the disadvantage that the overall fish grilling time will be longer.
In view of the balance between the two, it was difficult to select an appropriate value, and in the embodiment, it was set at 85%, but it is not limited to this.

The time from adding the fish to turning the fish over is as described above <T1
At this point, the message ``Please turn over the fish'' is displayed, and after 1'7 hours, the message ``The fish is cooked'' is displayed via the display circuit 23 according to instructions from the microcomputer 18. This is done by the device 24.

Furthermore, in Figure 4, the time a until the fish is grilled after RNtl'J in step 11 mentioned above is the best way to grill the fish in the shortest possible time with 100% energization rate. This is important in relation to this, but if the power supply voltage fluctuates during this period, it will have a major effect on the quality of the fish.

That is, since the amount of heat generated by the heater 7 is proportional to the square of the voltage, if the voltage increases slightly, the food will be overcooked, and if the voltage decreases slightly, the product will be half baked. In order to always perform accurate grilling even when there are such fluctuations in the power supply voltage, the present invention is equipped with a voltage detection circuit 15 that detects the temperature at certain intervals during the grilling time a. The voltage is detected and the time t2 is corrected. By correcting t2, the time T□ until turning over and the time T2 until completion are also corrected.

For example, if the power supply voltage is high, shorten t2, and therefore a
When the voltage is low, 1 and 2 are made long, and a is made long to ensure uniform and accurate baking at all times.

Furthermore, not only fluctuations in the power supply voltage are detected and corrected by the voltage detection circuit 15, but also fluctuations in the internal temperature due to fluctuations in the heating amount of the heater 7 due to voltage fluctuations are detected by the temperature detection device 8, and both detections are performed. This makes it possible to more accurately understand and control fluctuations.

In this way, by correcting the times t2 and a to optimal values in response to voltage fluctuations, the amount of power of the heater 7 is always controlled to be optimal for grilling fish.

As described in detail of the invention, the grill heater is controlled based on the detected temperature detected by the temperature detection device and the detected voltage detected by the voltage detection circuit, and the fish is automatically grilled. It is not affected by opening/closing, the amount of water on the grill plate, or fluctuations in the power supply voltage while grilling fish, and allows you to use voice commands to tell you when to put the fish on the grill, when to turn it over, and when it is done. The practical effects of the present invention are extremely large, as anyone can successfully grill fish without any discrimination by notifying the user with the notification sound, and since the notification is provided through the display, they can do other cooking with peace of mind.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electric stove equipped with an automatic fish grilling device showing one embodiment of the present invention, FIG. 2 is a side sectional view of the grill section, and FIG. 3 is a block diagram of the control circuit. Figure 4 shows the sequence of automatic grilled fish cooking. 5. Exhaust hole, 6. Grill case body, 7.
・Grill heater (heater), 8...Temperature detection device, 9...Grill 1 hair, 15...Voltage detection circuit, 18
・Microcomputer (control unit), 24.Display device, 25.Door opening/closing detection device (door sensor). Applicant Hitachi Home Tesoku Co., Ltd.

Claims (1)

[Claims] A grill case main body (6) formed into a substantially box shape and provided with a grill door (9) on the front, an exhaust hole (5) provided in the grill case main body (6), and an air vent located above the grill case main body (6). A heater (7) provided, a temperature detection device (8) attached at an appropriate position inside the main body (6), and a voltage detection circuit (15) for detecting a power supply voltage applied to the heater (7). , a configuration including a door opening/closing detection device (25) that detects opening/closing of the grill door (9), and a control section that performs overall control including control of the heater (7),
The heater (7) is activated by the detected temperature detected by the temperature detection device (8) and the detected voltage detected by the voltage detection circuit (15).
This automatic fish grilling cooker is characterized by controlling electricity supply, automatically grilling fish, and notifying each process on a display device (24).