JP2012154539A - Heat cooking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat cooking device suitable for grill cooling for refrigerated food to be cooked.SOLUTION: The heat cooking device heats food to be cooked in a cooking chamber by supplying microwaves by means of a magnetron. A heater heats the food to be cooked in the cooking chamber. A ceramic plate has a microwave heating element and is arranged at the cooking chamber. A controlling section drives the magnetron for defrosting the food to be cooked in a frozen condition on the ceramic plate to supply the microwaves and then drives the heater to supply heat.

Description

  Embodiments described herein relate generally to a cooking device.

  2. Description of the Related Art Conventionally, a cooking device such as a microwave oven is provided with a plurality of types of cooking means such as microwave cooking supplied from a magnetron, oven cooking using heat radiated from a heater, and steam cooking using steam. Moreover, what built in the program which comprised the combination of these cooking means according to to-be-cooked material is known. The user can perform cooking suitable for an object to be cooked with few operations.

  In addition, a technology is known that allows the food to be cooked on the baking dish to be scorched on both sides by placing the food to be cooked on a baking dish provided with a microwave heating element and cooking in a range or oven. It has been.

JP 2003-287231 A JP 2004-198106 A

  2. Description of the Related Art Conventionally, when cooking to bake a frozen food to be cooked, a method of first thawing the food to be cooked by range cooking and then baking it by heater cooking is used. The user first needs to perform an operation for cooking the range for thawing, and after thawing, it is necessary to perform an operation for cooking the heater to bake the cooking object.

  For this reason, the grill cooking of the frozen cooking object requires a larger number of operations than the normal cooking method, and the user needs to monitor the end of each step and set the next step after the end. there were.

  Moreover, the suitable cooking method of grill cooking using the ceramic baking dish provided with the microwave heat generating body with respect to the frozen to-be-cooked object was not provided.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cooking device suitable for grill cooking of a frozen food.

  The heating cooker of embodiment heats the to-be-cooked object accommodated in the cooking chamber with the magnetron by supplying a microwave. A heater heats the to-be-cooked object accommodated in the cooking chamber. The ceramic dish has a microwave heating element and is installed in a cooking chamber. The control unit drives the magnetron to defrost the frozen cooking object placed on the ceramic dish and supplies the microwave, and then drives the heater to supply heat.

The front view of the microwave oven which is one Embodiment of the heating cooker which concerns on this invention. The front view in the state where the microwave oven of Drawing 1 was opened. The block diagram which shows the electric constitution of the microwave oven in this embodiment. (A) is an external appearance perspective view which shows the surface of a ceramic dish, (B) is an external view which shows the back surface of a ceramic dish. Explanatory drawing which shows the mode of the heating by a magnetron and the heating by a heater at the time of using a ceramic dish. The flowchart explaining the thawing baking cooking performed with the microwave oven in this embodiment. The flowchart explaining the combination cooking performed with the microwave oven in this embodiment.

  An embodiment of a heating cooker according to the present invention will be described with reference to the accompanying drawings.

  Drawing 1 is a front view of microwave oven 1 which is one embodiment of a cooking-by-heating machine concerning the present invention.

  FIG. 2 is a front view of the state in which the microwave oven 1 of FIG. 1 is opened.

  FIG. 3 is a block diagram showing an electrical configuration of the microwave oven 1 in the present embodiment.

  The microwave oven 1 has a main body 10 and a door 11.

  The main body 10 has an inner box 12 and an outer box 13. The inner box 12 forms a cooking chamber 14 in which an object to be cooked is accommodated. The outer box 13 covers the inner box 12 and configures the appearance (outer wall) of the microwave oven 1. The cooking chamber 14 has an opening on the front surface of the microwave oven 1 for taking in and out the food to be cooked.

  The door 11 is attached to the front surface of the main body 10, and allows the opening of the cooking chamber 14 to be opened and closed by an opening / closing mechanism provided at the lower front portion of the main body 10. An operation unit 15 and a display unit 16 are provided below the door 11.

  The operation unit 15 includes a menu key 21, a dial / decision key 22, a start key 23, and a cancel key 24. The arrangement of the operation unit 15 illustrated in FIG. 1 is an example and is not limited thereto.

  The menu key 21 is a key for instructing range cooking, oven cooking, steam cooking, and a specific cooking menu in which conditions such as output and time are programmed in advance (for example, “warm drink” and “thaw warming”). It is a key for instructing.

  In particular, the menu key 21 has a defrosting and baking key 25 and a combination cooking key 26. The thawing and baking key 25 is a key for instructing thawing and baking cooking that automatically performs thawing of the frozen food to be cooked and oven cooking of the thawed food to be cooked. The combination cooking key 26 is a key for instructing combination cooking that allows continuous operation by combining various conditions. Details of operation contents using the defrosting and baking key 25 and the combination cooking key 26 will be described later.

  The dial / decision key 22 accepts selection of manual or automatic operation, heating conditions, automatic cooking menu, and the like by rotating the dial. The dial / decision key 22 accepts a selection decision made by a rotation operation by a pressing operation.

  The start key 23 accepts the start of operation based on the determined cooking menu, heating mode, and heating condition. The cancel key 24 receives an instruction to cancel the selection or determination that has already been received or to stop the started heating operation. For example, when the cancel key 24 is pressed during the selection of the heating menu or the heating condition, it receives an instruction to reset the already determined content.

  The display unit 16 displays the selection and setting of the cooking menu performed by the user via the operation unit 15 and the operating state of the microwave oven 1.

  The main body 10 includes heating means such as a magnetron 31, a heater 32, and a steam generating heater 33 at predetermined positions. The microwave oven 1 can perform cooking such as range cooking, oven cooking, and steam cooking of an object to be cooked accommodated in the cooking chamber 14 by these heating means.

  The magnetron 31 heats the food to be cooked by supplying microwaves (high frequency) into the cooking chamber 14. The magnetron 31 is accommodated in the bottom of the main body 10 between the outer box 13 and the inner box 12 and supplies microwaves from the lower part of the cooking chamber 14. The heater 32 is provided on the ceiling (upper) of the cooking chamber 14 and performs oven cooking with the radiated heat. The steam generating heater 33 is provided at a predetermined position between the outer box 13 and the inner box 12, and heats water supplied from a tank (not shown) to generate steam. The generated steam is supplied to the cooking chamber 14 from a steam supply port 17 provided on the right side surface of the inner box 12, for example.

  The infrared sensor 35 is provided in the upper position of the cooking chamber 14 as shown in FIG. The infrared sensor 35 catches infrared rays in the cooking chamber 14 and detects the temperature in the cooking chamber 14.

  The buzzer notification unit 36 outputs a buzzer sound for notifying the user at a predetermined timing based on an instruction from the control unit 30.

  A pair of rails 18a, 18b, and 18c are provided on the side surface of the inner box 12 on the cooking chamber 14 side, respectively. The rails 18a, 18b, and 18c slide and hold the ceramic dish 40 (see FIG. 4) inserted into the cooking chamber 14 from the opening. The rail is provided with a rail 18a, a rail 18b, and a rail 18c from a high position on the ceiling of the cooking chamber 14. The rail for holding the ceramic dish 40 is determined by the user in consideration of the thickness (height) of the object to be cooked and the distance from the ceiling of the cooking chamber 14 and the heater.

  4A is an external perspective view showing the surface of the ceramic dish 40, and FIG. 4B is an external view showing the back surface of the ceramic dish 40. FIG.

  The ceramic dish 40 includes a bottom part 41, a wall part 43 rising from the outer periphery of the bottom part 41, and an outer peripheral part 44 extending in the horizontal direction from the upper end of the wall part 43 to the outer peripheral side of the ceramic dish 40. A microwave heating element 45 is deposited on the back surface of the bottom 41.

  The microwave heating element 45 is a substance that generates heat by absorbing microwaves. As the microwave heating element 45, a conductive material, for example, a conductive material in which molybdenum is added to tin oxide can be used.

  The microwave heating element 45 is disposed on the back surface of the ceramic dish 40 at a distance D or more from the outer edge of the outer peripheral portion 44 (cooking chamber 14 wall surface). The distance D is preferably λ / 4 (1/4 of the wavelength) or more when the wavelength of the microwave supplied into the cooking chamber 14 is λ. This is because the microwave is efficiently sent onto the ceramic dish 40. Specifically, the distance D is preferably about 4 mm or more. Of the four sides of the ceramic dish 40, the side providing the distance D may be at least one side.

  FIG. 5 is a diagram illustrating the heating by the magnetron 31 and the heating by the heater 32 when the ceramic dish 40 is used. FIG. 5 is a longitudinal sectional view showing the microwave oven 1 with the door 11 opened from the front. In FIG. 5, the microwave oscillated by the magnetron 31 is indicated by a solid line, and the heat radiated from the heater 32 is indicated by a dotted line.

  When the microwave is generated by driving the magnetron 31, the microwave is diffused from the bottom surface of the cooking chamber 14 into the cooking chamber 14 by the rotation of the rotating antenna 51. The microwave passes through the ceramic dish 40 through the bottom 41, the wall 43, and the outer periphery 44 where the microwave heating element 45 is not disposed. The transmitted microwaves heat the object to be cooked from the top of the ceramic dish 40. Other microwaves are absorbed by the microwave heating element 45 of the ceramic dish 40 to heat and cook the food. Further, the heat radiated from the ceiling of the cooking chamber 14 by driving the heater 32 performs grill cooking that heats and cooks the object to be cooked. Thereby, the food to be cooked placed on the ceramic dish 40 is baked from both sides by the heat of the microwave heating element 45 and the heater 32.

  Next, the details of the thaw-baked cooking performed by the microwave oven 1 will be described. This thawing and baking cooking is a cooking method in which a frozen cooking object placed on the ceramic dish 40 is thawed and further baked. Defrosted and baked cooking can be automatically performed from thawing to baking cooking (oven cooking) by receiving input of the defrosting and baking key 25.

  Examples of the cooking object include fried chicken, hamburger, teriyaki chicken, and salted salmon. In addition, the key which instruct | indicates thaw-baking cooking may provide a dedicated key for every to-be-cooked item. As a premise of the thawing and baking cooking, the user places the food to be cooked on the ceramic dish 40, and holds the ceramic dish 40 on the appropriate rails 18a, 18b, 18c according to the height of the food to be cooked and the amount of heating to the food to be cooked. The thawing and baking cooking starts after this.

  FIG. 6 is a flowchart for explaining thaw-baked cooking performed by the microwave oven 1 in the present embodiment. The following processing will be described mainly with the control unit 30 as the subject. The control unit 30 is a microcomputer that controls each unit of the microwave oven 1. The output and time of each cooking shall be programmed beforehand by the to-be-cooked item and the amount of the to-be-cooked item.

  In step S1, the control unit 30 determines whether or not the decompression and baking key 25 of the menu key 21 has received an input from the user. When determining that the input is not received, the control unit 30 waits until the input is received.

  When determining that the input has been received, the control unit 30 drives the magnetron 31 to supply the microwave to the cooking chamber 14 in step S2. The microwave oven heating here is for thawing the food. The to-be-cooked object is heated by microwaves that are transmitted from the upper part through the ceramic dish 40 and heat generated by the microwave heating element 45.

In step S3, the control unit 30 makes a determination of whether the elapsed time T _1. The time T ₁ for use in the determination is set to a time that the foods is generally decompressed state. For example, if the food is fried, time _{T 1} is 5 min, the output is set to 1000W. Control unit 30, if it is determined that no over time T _1, and waits until time T ₁ is passed. The control unit 30 can determine and output the optimum microwave irradiation time by measuring the initial temperature of the food (time T ₁₎ by the infrared sensor 35. Thereby, cooking according to the frozen state of a to-be-cooked object can be performed. When the control section 30 determines that the time T ₁ is passed, in step S4, it stops driving the magnetron 31. At this time, the food to be cooked is almost in a thawed state.

  In steps S5 to S11, the upper surface of the object to be cooked is heated by the heater 32 (the surface opposite to the surface in contact with the ceramic dish 40), and the microwave heating element 45 that absorbs the microwave is heated. This is a step for baking the lower surface of the food (the surface in contact with the ceramic dish 40). The heating combining the heater 32 and the magnetron 31 is performed for a predetermined cycle. The number of cycles and the driving time of the heater 32 and the magnetron 31 are determined in advance depending on the type and amount of the object to be cooked.

  In step S5, the control unit 30 drives the heater 32 to perform heater cooking. This heater cooking is for baking the upper surface (the surface opposite to the surface in contact with the ceramic dish 40) of the object to be cooked.

In step S6, the control unit 30 makes a determination of whether the elapsed time T _2. The time T ₂ corresponds to the driving time of the heater 32 in the heating in which the heater 32 and the magnetron 31 are combined. For example, if the food is fried, time T ₂ are set to 1 minute. Control unit 30, if it is determined that no over time T _2, and waits until time T ₂ has elapsed. When the control section 30 has determined that the elapsed time T _2, at step S7, stops driving the heater 32.

In step S <b> 8, the control unit 30 drives the magnetron 31. In step S9, the control unit 30 makes a determination of whether the elapsed time T _3. The time T ₃ corresponds to the driving time of the magnetron 31 in the heating in which the heater 32 and the magnetron 31 are combined. Control unit 30, if it is determined that no over time T _3, and waits until the elapse of the time T _3. When the control section 30 has determined that the elapsed time T _3, at step S10, stops driving the magnetron 31.

  In step S <b> 11, the control unit 30 determines whether or not the heating combining the heater 32 and the magnetron 31 has been completed for N cycles. When it is determined that the N cycle has not ended, the control unit 30 repeats the heater ON step S5 to the end determination step S11 until the combined heating ends the N cycle.

When it is determined that the N cycles have been completed, the control unit 30 drives the heater in step S12. The heating by the heater 32 here is heating for mainly baking the upper surface of the object to be cooked. In step S13, the control unit 30 makes a determination of whether the elapsed time T _4. The time T ₄ used for determination is set to a time that the foods are substantially the oven is completed. For example, the food is the case of fried chicken, time T ₄ is set to 3 minutes. Control unit 30, if it is determined that no over time T _4, and waits until time T ₄ has elapsed. When the control section 30 determines that the time T ₄ has elapsed, at step S14, stops the driving of the heater 32.

  Above, description of operation | movement of the microwave oven 1 which performs the thawing-baking cooking shown in FIG. 6 is complete | finished.

  According to the microwave oven 1, an object to be cooked in a frozen state can be automatically performed from thawing to baking by only one key operation. For this reason, the operation which a user sets range cooking for thawing | decompression and the operation which sets grill cooking for baking the to-be-cooked material after thawing | decompression can be omitted.

  For example, when a metal dish different from a ceramic dish is used, a microwave is supplied to the upper part of the object to be cooked, and a microwave is provided in the inner box that forms the cooking chamber. It is necessary to provide a road. On the other hand, since the ceramic dish 40 is used in this embodiment, a sufficient amount of microwaves suitable for thawing can be supplied to the object to be cooked.

  Further, the ceramic dish 40 is excellent in safety because no spark is generated when the microwave is supplied.

  Next, operation | movement of the microwave oven 1 which performs the combination cooking using the combination cooking key 26 among the menu keys 21 is demonstrated.

  Combination cooking is a cooking method in which a user freely sets time, output, combination, order, and the like, such as range cooking, oven cooking, and steam cooking, and performs automatic operation based on the setting. In the combination cooking, the first heating performed by driving the magnetron 31, the second heating performed by driving the magnetron 31 and the heating performed by driving the heater 32 alternately, and the heater 32 are driven. The third heating performed in this manner is successively performed in the order of the first heating, the second heating, and the third heating. Hereinafter, the operation of the microwave oven that performs combination cooking will be described in detail using a flowchart.

  FIG. 7 is a flowchart illustrating combination cooking executed by the microwave oven 1 in the present embodiment.

  In step S21, the control unit 30 determines whether or not the combination cooking key 26 has received an input. Here, by accepting an input from the combination cooking key 26, the control unit 30 accepts an instruction to set combination cooking. When determining that the input is not received, the control unit 30 waits until the input is received.

  When it is determined that the input has been received, the control unit 30 receives the setting of each step of the combined cooking from the user in step S22. Specifically, the control unit 30 accepts selection of cooking methods classified by range cooking, oven cooking, and steam cooking from the menu key 21. For example, the control part 30 receives the order of combination cooking according to the order which received the input of the cooking method. Moreover, the control part 30 receives the setting of conditions, such as the time of a cooking method, an output, for every cooking method using the dial and the determination key 22 grade | etc.,.

  In addition, it is preferable that the control part 30 displays the setting content received by the user on the display part 16 in the format which can recognize the order and conditions of each process.

  In step S23, the control unit 30 determines whether or not an input from the combination cooking key 26 has been received. Here, by receiving an input from the combination cooking key 26, the control unit 30 receives an instruction to start combination cooking. When determining that the input is not received, the control unit 30 returns to the setting receiving step S22 and continues to receive the setting.

  When it is determined that the input has been received, the control unit 30 configures a cooking program in the order and conditions of the combination cooking that has received the input in the setting receiving step S22, and starts cooking in each step. For example, when the program is configured in the order of range cooking at low output, range cooking at high output, and oven cooking, the control unit 30 first starts range cooking at low output.

  In step S <b> 25, the control unit 30 determines whether or not an input from the combination cooking key 26 has been received. Here, by accepting the input of the combination cooking key 26, the control unit 30 accepts an instruction to add or change a process for the combination cooking that has already been set. Here, in the combined cooking, even after the start of the combined cooking, a new process can be added / deleted after the currently performed process, or the already set conditions can be changed. When determining that the input is not accepted, the control unit 30 proceeds to step S27.

  On the other hand, when it determines with the control part 30 having received the input, in step S26, the setting of the combination cooking method is received again. The control unit 30 receives additions and changes from the user via the combination cooking key 26, the dial / decision key 22, and the like, similarly to the setting reception step S22. The control unit 30 configures a cooking program according to the order and conditions of the combined cooking that has received the input.

  In step S <b> 27, the control unit 30 determines whether or not the cooking time of the currently performed process has ended. When it is determined that the cooking time has not ended, the control unit 30 returns to the input determination step S25 and repeats the subsequent processing.

  When it is determined that the cooking time has ended, the control unit 30 determines whether or not there is a next process in the combined cooking in step S28. If the control unit 30 determines that there is a next process, the buzzer notification unit 36 outputs a switching sound to notify the user that cooking has moved to the next process in step S29. In step S30, the control unit 30 shifts the operating condition to the next process and returns to the cooking start step S24. The cooking start step S24 to the next process transition step S30 are repeatedly executed until all the processes of the combination cooking set by the user are completed.

  When determining that there is no next process in the next process determination step S28, the control unit 30 causes the buzzer notification unit 36 to output an end sound for notifying the end of the combination cooking in step S31.

  Above, description of operation | movement of the microwave oven 1 which performs the combination cooking shown in FIG. 7 is complete | finished.

  According to the microwave oven 1, in addition to cooking using a single heating means and a programmed and built-in cooking menu, the user can freely program the cooking menu, so the cooking function can be expanded. Can be planned.

  In addition, when it is desired to continuously operate a plurality of processes consisting of different heating means (range cooking, oven cooking, steam cooking, etc.), the user confirms that one heating is completed and then performs the next process. No need to enter. For this reason, the user can simplify the trouble of setting operation, and can cook without time loss from setting to completion of operation.

  Moreover, since the microwave oven 1 is provided with the dedicated combination cooking key 26, it is excellent in operability. Furthermore, since it is possible to add or change a process even after the start of cooking, it is also effective in that the next process can be determined while checking the cooking status.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Microwave oven 10 Main body 11 Door 14 Cooking room 15 Operation part 16 Display part 21 Menu key 25 Defrosting baking key 26 Combination cooking key 30 Control part 31 Magnetron 32 Heater 33 Steam generating heater 36 Buzzer alerting part 40 Ceramic dish 45 Microwave heat generation body

Claims (3)

A body forming a cooking chamber;
A magnetron for heating the cooking object accommodated in the cooking chamber by supplying microwaves;
A heater for heating the object to be cooked accommodated in the cooking chamber;
A ceramic dish having a microwave heating element and installed in the cooking chamber;
A heating control unit that drives the magnetron and supplies heat after driving the magnetron to defrost the frozen food to be cooked placed on the ceramic dish. To cook. The heating control unit is configured to perform first heating performed by driving the magnetron, second heating performed by driving the magnetron, and heating performed by driving the heater alternately a predetermined number of times, and the heater The heating cooker according to claim 1, wherein the third heating performed by driving is continuously performed in the order of the first heating, the second heating, and the third heating. The cooking device according to claim 1, further comprising an instruction receiving unit that receives an instruction of a type of heating, a heating time, or a heating order controlled by the heating control unit.

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