JP2007064583A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain a uniform finish of cooked articles by correcting the outputs of upper and lower heating elements in a fixed time while determining, for example, whether or not there is water in a pan in a cooking chamber. <P>SOLUTION: The heating cooker comprises the upper and lower heating elements 5 and 6 for heating a cooking article 4 in the cooking chamber 3, a first temperature detection means 2 for detecting the temperature of the cooking chamber 3, a grill 7 on which the cooking article 4 is placed, the pan 8 on which the grill 7 is placed and which can be removed from the cooking chamber 4, a second temperature detection means 9 for detecting the temperature of the pan 8, an exhaust passage 10 for connecting the cooking chamber 3 to the outside air, and a control circuit 15 for controlling the outputs of the upper and lower heating elements 5 and 6 according to the temperatures detected by the first and second temperature detection means 2 and 9. In a fixed time from the start of cooking, the temperatures detected by the first and second temperature detection means 2 and 9 are compared with preset reference temperatures, and the outputs of the upper and lower heating elements 5 and 6 are corrected by the control circuit 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cooking device such as a grill or an oven for cooking a fish or the like in a cooking cabinet and cooking with a heating element such as a heater.

  In this type of conventional cooking device, a grill net is placed in a saucer, a fish or other food is placed on the grill, and these are stored in a cooking cabinet and provided above and below the cooking cabinet. In addition, it is common to bake the food by heating with a lower heater.

  In such a heating cooker, oil from cooking products such as fish accumulates in the saucer during cooking, and if the temperature in the cooking chamber rises, there is a risk of odor, smoke or ignition, so remove them. In order to prevent this, water is added to the saucer.

  However, in recent years, there are problems such as the troublesomeness of filling the saucer with water, the problem of filling the saucer with water, and spilling water around when the saucer is put in and out. As shown in Fig. 2, a motor and a fan that rotates by driving the motor are provided outside the cooking chamber, a cooling passage that is connected to the fan is formed under the tray, and outside air is circulated from the fan to the cooling passage by driving the motor. In addition to preventing the temperature of the saucer from rising to the ignition temperature of the oil, an air purifying catalyst is provided at the exhaust outlet provided at the upper or upper surface of the cooking cabinet, so that cooking can be performed without filling the saucer. At the same time, the smoke and odor generated during cooking is purified by this air purification catalyst.

  On the other hand, regardless of the presence or absence of water in the saucer, the user can install a commercially available aluminum foil between the grill and the saucer to make it easier to clean the saucer after cooking. In some cases, cooking is carried out by laying grill stone or the like mainly composed of natural stone that absorbs the far-infrared effect or moisture or oil dripping from the food to prevent ignition.

JP-A-9-164080 JP-A-8-107828

  In the above conventional cooking device, assuming that water is put into the saucer, there is no danger of ignition etc., but there is a risk of spilling water when the saucer is moved, and it should be used without adding water If this happens, there is a problem such as ignition.

  In addition, in the premise that water is not put into the saucer, when water is accidentally put in due to reasons such as having a custom of adding water until now, the water in the saucer evaporates, so cooking There is a problem that the temperature in the cooking chamber is difficult to rise and the finish of the cooked food is poor.

  In addition, even when aluminum foil or grill stone, which is normally prohibited in the instruction manual, is installed in the cooking cabinet, the temperature in the cooking cabinet changes, the finish of the cooked product does not become uniform, and it is burnt. There are problems such as too much.

  The present invention is for solving the above-mentioned problems. In claim 1, in addition to heating the food in the cooking chamber, the lower heating element, and the temperature detection means A for detecting the temperature in the cooking chamber, A grill net on which food is placed, a saucer on which the grill net is placed, a detachable tray from the cooking chamber, a temperature detection means B for detecting the temperature of the tray, an exhaust passage for communicating between the cooking cabinet and the outside air, and a temperature detection means In a heating cooker provided with a control circuit that controls the output of the upper and lower heating elements according to the detected temperatures of A and B, after a certain period of time from the start of cooking, the detected temperatures of the temperature detecting means A and B are The control temperature is compared with the set reference temperature, and the output of the upper and lower heating elements is corrected by the control circuit.

  According to a second aspect of the present invention, the exhaust passage that communicates between the cooking chamber and the outside air includes an air purification catalyst body, a heater that heats the catalyst body, and an exhaust fan that exhausts the air in the cooking chamber. Is.

  According to claim 1 of the present invention, the output of the lower heating element is corrected by comparing the detected temperature of the temperature detecting means A and B with a preset reference temperature, so the situation in the cooking chamber In addition, by correcting the output of the lower heating element after a certain period of time, the cooked product can be heated uniformly and the finish of the cooked product can be kept uniform.

  In addition, the above-described effect is that an air purification catalyst body, a heater for heating the catalyst body, an exhaust fan and a motor for discharging the air in the cooking chamber are provided in an exhaust passage connecting the cooking chamber and the outside air. The same can be achieved with the heating cooker provided.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a sectional view of a heating cooker showing an embodiment of the present invention, and FIG. 2 is a temperature characteristic diagram of temperature detecting means A and B during cooking before correcting the output of the lower heating element. . FIG. 3 is a temperature characteristic diagram of temperature detecting means A and B during cooking after correcting the output of the lower heating element. FIG. 4 is an explanatory diagram of an example of temperature correction based on a combination of detected temperatures of the temperature detecting means A and B. FIG. 5 is a sectional view of a heating cooker showing another embodiment of the present invention.

  In FIG. 1, reference numeral 1 denotes a main body of a cooking device such as a grill or an oven. Reference numeral 3 denotes a box-shaped cooking chamber having an open front surface, in which an upper heating element 5 and a lower heating element 6 such as sheathed heaters are installed on the upper and lower sides, and an exhaust outlet 3a is provided on the upper rear side.

  A receiving tray 8 is housed in the cooking chamber 3 so as to be freely inserted and removed from its front opening. A door 16 and a handle 17 for closing the opening are attached to the front, and a grill net 7 is placed therein. . Reference numeral 4 denotes a cooked product such as a fish placed on the grill 7.

  11 is a catalyst body for air purification, which purifies smoke and odor generated in the cooking cabinet 3, and is attached in the vicinity of the exhaust outlet 3a. An exhaust passage 10 is connected to an exhaust outlet 3a on the inlet side, and an exhaust port 18 is provided at the outlet.

  A catalyst heater 12 for heating the air purification catalyst body 11 is installed in the vicinity of the air purification catalyst body 11 in the cooking chamber 3 and heats the air purification catalyst body 11. .

  Reference numeral 2 denotes a temperature detection means A such as a thermistor for detecting the temperature in the cooking cabinet 8 and is provided at the upper part of the cooking cabinet 8 on the front opening side.

  Similarly, a temperature detection means B such as a thermistor 9 detects the temperature of the tray 8 and is provided near the substantially central portion of the outer bottom surface of the tray 8.

  The present invention is constructed as described above, and the operation thereof will be briefly described below.

The user pulls the handle 17 of the door 16 forward, pulls out the saucer 8 and the grill net 7 from the cooking cabinet 3, places the food 4 such as fish on the grill net 7, pushes the handle 17 of the door 16, and receives the saucer 8. And the grill 7 is stored in the cooking cabinet 3.

  Thereafter, when an operation unit (not shown) is operated, the control circuit 15 energizes the upper and lower heating elements 5 and 6 and the catalyst heater 12 to start cooking.

  During cooking, smoke and odor generated from the cooked food 4 such as fish are smoked and deodorized while passing through the air purifying catalyst body 11 from the exhaust outlet 3 a provided at the upper rear part of the cooking chamber 3, and through the exhaust passage 10. The gas is discharged from the exhaust port 18 on the upper surface of the rear portion of the main body 1 to the outside (inside the room).

  After cooking is finished, the handle 17 of the door 16 is pulled forward, the tray 8 and the grill 7 are pulled out from the cooking cabinet 3, the food 4 on the grill 7 is transferred to the pan, and the handle 17 of the door 16 is again drawn. , And the tray 8 and the grill net 7 are stored in the cooking cabinet 3.

  FIG. 2 shows that in the above cooking, the outputs of the upper and lower heating elements 5 and 6 are set to 1.2 kw, respectively, when water is put into the tray 8, when water is not poured and when the tray 8 is made of aluminum foil. The relationship between the time and temperature of the temperature detection means A2 and the temperature detection means B9 when installed is shown.

The outputs and time-temperature curves of the upper and lower heating elements 5 and 6 are set so as to be satisfactorily finished when water is put in the receiving tray 8, and the detection by the temperature detection means A2 and the temperature detection means B9 at that time The temperature is as shown by the solid line. This is because the amount of water evaporated from the tray 8 is large, and the temperature in the cooking chamber 3 is lowered and the temperature of the tray 8 is not easily raised. In the present embodiment, this is a reference curve that can be cooked normally. On the other hand, the temperature detected by the temperature detection means A2 and the temperature detection means B9 when water is not put into the tray 8 and when aluminum foil is installed. Is as indicated by the dotted line, and in any case, since the evaporation of water is less than when water is added, the temperature in the cooking chamber 3 rises earlier, and when the temperature is poured into the tray 8 with time, It becomes higher than the solid line. In particular, when an aluminum foil is installed, the radiant heat of the lower heating element 6 is blocked by the aluminum foil, and the detection temperature of the temperature detecting means B9 is lower than when no water is present and is higher than when water is added. Since the inside of the cooking chamber 3 is partitioned vertically by the foil, the space volume in the cooking chamber 3 is reduced, and the temperature detected by the temperature detection means A2 is further higher than when there is no water.

  For this reason, variations occur in the baking of the cooked food 4 such as fish placed on the grill 7 in the cooking chamber 3, and the finished product is generally over-baked. This state becomes prominent when an aluminum foil is installed.

  Therefore, in the present invention, as shown in FIG. 3 and FIG. 4, after a certain time (about 3 minutes in the figure) when the temperature in the cooking chamber 3 starts to vary from the start of cooking, the temperature detecting means A2, The detected temperature of B9 is compared with a preset reference temperature, the outputs of the lower heating elements 5 and 6 are adjusted by the control circuit 15, and temperature correction is performed so that the temperature rises along the solid reference curve.

  Specifically, the reference temperature of the temperature detection means A2 is set to 150 ° C., and the reference temperature of the temperature detection means B9 is set to 60 ° C. When water is contained in the tray 8, the temperature detection means A2 and the temperature detection means B9 have not reached the reference temperatures of 150 ° C. and 60 ° C., so the outputs of the upper and lower heating elements 5 and 6 are maximized. Heat cooking is performed with the output of 1.2 kw. As a result, the subsequent time-temperature curve in the cooking chamber 3 becomes a solid line, and the cooked food such as fish is finished well.

  On the other hand, when there is no water in the tray 8, the temperature detection means A2 is substantially the same as the reference temperature of 150 ° C., but the temperature detection means B9 exceeds the reference temperature of 60 ° C. Therefore, in this case, cooking is performed by lowering the outputs of the upper and lower heating elements 5 and 6 to 1.1 kW and 0.9 kW, respectively. As a result, the subsequent time-temperature curve in the cooking chamber 3 rises with a curve that is substantially the same as the state of the solid line containing water, and the cooked product is finished satisfactorily in the same manner as when water is present, thereby preventing over-baking.

  When an aluminum foil is installed on the tray 8, the temperature detection means A2 is higher than the reference temperature of 150 ° C., and the temperature detection means B9 is almost the same as the reference temperature of 60 ° C. Also in this case, cooking is performed by lowering the outputs of the upper and lower heating elements 5 and 6 to 1.0 kW and 0.7 kW, respectively. As a result, the subsequent time-temperature curve in the cooking chamber 3 rises with a curve that is substantially the same as the state of the solid line containing water, and the cooked product is finished satisfactorily in the same manner as when water is present, and overbaking can be prevented.

  Thus, according to the present invention, the temperature detection means A2 for detecting the temperature in the cooking chamber 3 and the temperature detection means B9 for detecting the temperature of the tray 8 are set in advance after a certain time from the start of cooking. Compared with the reference temperature, the situation in the cooking cabinet 3 is judged, and the output of the lower heating elements 5 and 6 is corrected, so that the food 4 is provided with an aluminum foil when the tray 8 does not have water. Even in the case where there is water, the finish is uniform and overbaking can be prevented.

  Next, FIG. 5 shows another embodiment of the present invention. In the cooking device of FIG. 1, an exhaust fan 13 and an exhaust fan 13 are further provided in the exhaust passage 10 after the air purification catalyst body 11. A motor 14 for driving is provided, and the fan 13 is rotated by the motor 14 so that odors and smoke generated in the cooking chamber 8 are forcibly exhausted from the exhaust passage 10 to the exhaust port 18 through the air purification catalyst 16. Is.

  Also in this cooking appliance, the output of the upper heating elements 5 and 6 can be corrected according to the situation of the tray 8 in the cooking cabinet 3, and the cooked food can be finished evenly.

It is sectional drawing of the heating cooker which shows one Example of this invention. It is a temperature characteristic view of temperature detecting means A and B before correcting the output of the upper and lower heating elements. It is a temperature characteristic view of temperature detection means A and B after correcting the output of the upper and lower heating elements. It is explanatory drawing which shows an example of the temperature correction by the combination of the detection temperature of temperature detection means A and B same as the above. It is sectional drawing of the heating cooker for demonstrating the other Example of this invention.

Explanation of symbols

1 Body 2 Temperature detection means A
3 Cooking chamber 4 Cooked food 5 Upper heating element 6 Lower heating element 7 Burning net 8 Sauce pan 9 Temperature detection means B
10 Exhaust passage 11 Air purification catalyst body 12 Catalyst heater 13 Exhaust fan

Claims (2)

In addition to heating the food in the cooking chamber, the lower heating element, the temperature detecting means A for detecting the temperature in the cooking chamber, the grill net on which the food is placed, and the grill net are mounted and removable from the cooking chamber. Control circuit for controlling the output of the upper and lower heating elements according to the temperature detected by the temperature detection means A and B, the temperature detection means B for detecting the temperature of the tray, the exhaust passage for communicating the cooking chamber with the outside air In a heating cooker equipped with the above, after a predetermined time has elapsed from the start of cooking, the detected temperature of the temperature detecting means A, B is compared with a preset reference temperature, and the upper and lower heating elements are compared by the control circuit. A heating cooker characterized by correcting the output of. The exhaust passage connecting the cooking chamber and the outside air is provided with an air purification catalyst body, a catalyst heater for heating the catalyst body, and an exhaust fan for discharging air in the cooking chamber. The cooking device according to claim 1.

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