JP2008185293A - Heating cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sufficient amount of superheated steam from right after starting cooking during high temperature cooking, and to provide a sufficient amount of superheated steam even during low temperature cooking. <P>SOLUTION: When a high temperature cooking menu is selected, electric power is supplied to a heat storage material heating heater 24 to store heat in a heat storage material 7. When cooking is started, electric power supply to the heat storage material heating heater 24 is stopped, the heat storage material 7 is contacted to a steam generator 3, and electric power is supplied to a steam generating heater 25. In such way, by using heat stored in the heat storage material 7 as heat for saturated steam generation to generate a large amount of superheated steam from right after starting cooking, air in a heating chamber 1 is rapidly driven away. On the other hand, when a low temperature cooking menu is selected, heat storage in the heat storage material 7 is prevented, and a state of the heat storage material 7 separated away from the steam generator 3 is retained. By this, drawing of heat from the steam generating heater 25 by the heat storage material 7 is prevented, steam is generated quickly, and a sufficient amount of superheated steam is provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device that cooks a food to be cooked, and more particularly to a cooking device that cooks a food by using superheated steam having a temperature exceeding 100 ° C.

  2. Description of the Related Art Conventionally, there is a cooking device that cooks food to be cooked such as food with overheated steam at 100 ° C. or higher obtained by further heating saturated steam. In this cooking device, water supplied from a water supply tank or the like to the saturated steam generator is heated to generate 100 ° C. saturated steam, and the generated 100 ° C. saturated steam is heated to a temperature exceeding 100 ° C. by the superheated steam generator. To produce the desired superheated steam. And this superheated steam is supplied in the heating chamber which accommodated the to-be-cooked object, cooking is performed, and when the heating time suitable for to-be-cooked material passes, supply of overheated steam is stopped and cooking is completed.

  As described above, when cooking is performed using the superheated steam, it is possible to prevent moisture from evaporating from the food to be dried, so that the food to be cooked can be maintained by holding appropriate moisture. Can be cooked in a moist finish. In addition, since the superheated steam has a higher heat transfer coefficient than air, the cooking time can be shortened and a large amount of superheated steam is supplied into the heating chamber during the cooking process, so that the atmosphere in the heating chamber is eliminated. It becomes close to an anoxic state, and the oxidation of the component of the to-be-cooked item during cooking is reduced.

  In order to maximize the characteristics of such superheated steam cooking, a large amount of superheated steam is quickly supplied to the heating chamber when the cooking object is accommodated in the heating chamber and cooking is started. It is necessary to expel air from the room. However, in order to heat the water with the saturated steam generator and generate saturated steam at 100 ° C., it is necessary to supply electric power corresponding to the heat of evaporation. Since the power that can be used for heating is limited, the amount of superheated steam generated is limited. Therefore, it is extremely difficult to generate a large amount of superheated steam in a short time and supply it to the heating chamber.

  As one method that can cope with the problem specific to a cooking device that cooks an object to be cooked with such superheated steam, it is generated by a steam generator that incorporates a heat storage material together with heating means, and heat storage from the heat storage material. It consists of a superheated steam generator for heating saturated steam and a steam oven that applies the superheated steam generated by this superheated steam generator to food, and by using the heat storage from the heat storage material, immediately at the start of cooking A cooking device (Patent Document 1) that can generate superheated steam has been proposed.

However, in the conventional cooking device disclosed in Patent Document 1, as described above, a heat storage material is provided in the steam generator. Therefore, even in the case of heating cooking that does not require heat storage because it is low-temperature cooking such as steaming cooking, a substantial portion of the heating power input to the steam generator is consumed for heating and heat insulation of the heat storage material. Therefore, there is a problem that the amount of generated steam is reduced by that amount.
JP 2000-41852 A

  Accordingly, an object of the present invention is a household cooking device that cooks an object to be cooked with superheated steam, and at a high temperature cooking such as baked cooking, a sufficient amount is obtained immediately after the start of heating cooking using heat storage. An object of the present invention is to provide a cooking device capable of obtaining a sufficient amount of superheated steam without using heat storage during low temperature cooking such as steam cooking while obtaining superheated steam.

In order to solve the above problems, the heating cooker of the present invention is:
A water vapor generating part for generating water vapor;
A superheated steam generator for heating the steam generated in the steam generator to superheated steam;
A cooking chamber for storing the cooking object and heating the cooking object with the superheated steam generated in the superheated steam generation unit;
A heat storage unit that is disposed in the vicinity of the water vapor generation unit, has a heating unit, and stores heat by heating by the heating unit;
And a drive unit that drives the heat storage unit to contact and separate from the water vapor generation unit.

  According to the said structure, the thermal storage part which has a heating part, and the drive part which makes this thermal storage part contact and space apart with respect to a water vapor | steam generation part are provided. Therefore, if the heating part provided in the heat storage part is operated before cooking is started and heat is stored in the heat storage part, the heat storage part is brought into contact with the water vapor generation part by the driving part at the start of cooking, and By operating the water vapor generation unit, when the water vapor generation unit generates water vapor, the heat stored in the heat storage unit and the heat generated by the water vapor generation unit can be used simultaneously. As a result, it is possible to generate a large amount of saturated water vapor, and it is possible to perform cooking with a large amount of superheated steam.

  Furthermore, when not storing heat in the heat storage unit, when the steam is generated in the water vapor generation unit by separating the heat storage unit from the water vapor generation unit by the drive unit at the start of cooking, the water vapor generation unit It is possible to prevent heat from being taken away by the heat storage section that is not storing heat, and a sufficient amount of superheated steam can be obtained.

Moreover, in the heating cooker of one embodiment,
When performing high-temperature cooking including grilled cooking, after operating the heating unit to store heat in the heat storage unit, at the start of cooking, operate the driving unit to bring the heat storage unit into contact with the water vapor generation unit. A control unit is provided.

  According to this embodiment, the control part which controls the operation | movement of the said heating part and the said drive part is provided. And when performing high temperature cooking including grilled cooking, after operating the heating unit to store heat in the heat storage unit, at the start of cooking, operate the driving unit to contact the heat storage unit with the water vapor generation unit I try to let them. Therefore, when performing the high temperature cooking, the heat stored in the heat storage unit and the heat generated by the water vapor generation unit can be used at the same time, and a large amount of saturated water vapor can be generated. It becomes possible to cook with the superheated steam.

  That is, in this embodiment, a large amount of superheated steam at a high temperature can be supplied into the heating chamber from the start of cooking, and the atmosphere in the heating chamber can be quickly eliminated to quickly reduce the oxygen concentration. Therefore, the oxidation of the component of the to-be-cooked item during cooking can be reduced. Furthermore, since a large amount of superheated steam can be supplied into the heating chamber, the amount of superheated steam condensing on the surface of the food to be cooked increases, and the food to be cooked can be quickly heated by the large amount of heat of condensation.

Moreover, in the heating cooker of one embodiment,
A temperature detection unit that detects the temperature of the heat storage unit and outputs a temperature signal representing the detection temperature,
In the case of performing the high temperature cooking, the control unit brings the heat storage unit into contact with the water vapor generation unit at the start of cooking, and then sets the temperature of the heat storage unit to 100 ° C. based on a temperature signal from the temperature detection unit. It is determined whether or not the temperature is lower, and when the temperature of the heat storage unit is lower than 100 ° C., the drive unit is operated to separate the heat storage unit from the water vapor generation unit.

  In the case of performing the high temperature cooking, if the heat storage unit and the water vapor generation unit are always in contact with each other, if the temperature of the heat storage unit is lower than 100 ° C., conversely, the heat storage unit from the water vapor generation unit The heat will move to. According to this embodiment, when the temperature of the heat storage unit falls below 100 ° C., the control unit operates the drive unit to separate the heat storage unit from the water vapor generation unit. . Therefore, the steam generation unit and the heat storage unit are insulated from each other, and the heat of the steam generation unit is prevented from being taken away by the heat storage unit, so that steam can be generated efficiently.

Moreover, in the heating cooker of one embodiment,
When performing low temperature cooking including steam cooking, the operation of the heating unit and the driving unit is controlled to store heat in the heat storage unit, and the heat storage unit is separated from the water vapor generation unit And the control part which starts cooking is provided.

  According to this embodiment, when performing low temperature cooking such as steaming cooking, under the control of the control unit, heat is not stored in the heat storage unit, and the heat storage unit is separated from the water vapor generation unit. Since cooking is performed, it is possible to prevent the heat of the steam generation unit from being taken away by the heat storage unit that is not stored. Therefore, a sufficient amount of water vapor can be generated quickly and, for example, a necessary amount of steam can be obtained only with the power supplied from a household power source.

  As is clear from the above, the cooking device of the present invention includes a heat storage unit having a heating unit, and a drive unit that contacts and separates the heat storage unit from the water vapor generation unit. The heating section provided in the heat storage section is operated to store heat in the heat storage section, and at the start of cooking, the drive section is brought into contact with the heat storage section and the water vapor generation section is operated. Can be made. Therefore, when water vapor is generated in the water vapor generation part, heat stored in the heat storage part can be used in addition to heat generated by the water vapor generation part. As a result, even in the case of a small amount of power such as a household power source, a large amount of saturated steam can be generated, and by extension, cooking can be performed with a large amount of superheated steam.

  Furthermore, when not storing heat in the heat storage unit, when the steam is generated in the water vapor generation unit by separating the heat storage unit from the water vapor generation unit by the drive unit at the start of cooking, the water vapor generation unit It is possible to prevent heat from being taken away by the heat storage section that is not storing heat, and a sufficient amount of superheated steam can be obtained.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. In the following embodiments, the same reference numeral represents the same member or a corresponding member.

-1st Embodiment FIG. 1: is schematic which shows the structure in the heating cooker of this Embodiment. As shown in FIG. 1, the heating cooker includes a heating chamber 1 in which food 6 is accommodated, a water tank 2 for storing water for steam, and the steam generation for evaporating water supplied from the water tank 2. The steam generator 3 as an example of the unit, the superheated steam generator 4 as an example of the superheated steam generator for heating the steam from the steam generator 3, and the control device 5 are provided. A movable heat storage material 7 is disposed below the water vapor generator 3. This heat storage material 7 is driven by a drive device 8 and has a structure that can be brought into contact with or separated from the water vapor generating device 3.

  The heating chamber 1, the steam generator 3, and the superheated steam generator 4 are connected via an external circulation path 9 and a connecting pipe 10. An exhaust port 12 is provided between the blower 11 and the water vapor generator 3 in the external circulation path 9 and can be opened and closed by a damper 13.

  The heating chamber 1 has a rectangular parallelepiped shape with an opening provided on one surface (front surface), and an opening / closing door (for opening / closing the food 6 to be heated) is placed in the opening. (Not shown). Moreover, the surface in which the said opening part in the heating chamber 1 is not provided is formed with the stainless steel plate. A stainless steel plate tray 14 is placed on the floor of the heating chamber 1, and a stainless steel wire support 15 for placing the food 6 is placed on the tray 14.

  One end of a water supply pipe 16 is connected to the bottom of the water tank 2, and a connection part 16 a is provided at the other end of the water supply pipe 16. And this connection part 16a is connectable with the funnel-shaped receiving port 17a provided in the end of the 1st water supply pipe 17 in which the pump 18 was interposed. The other end of the first water supply pipe 17 is connected above the water level joint portion 19. Further, one end of the water supply adjustment pipe 20 is connected to the downstream side of the receiving port 17 a in the first water supply pipe 17, and the other end of the water supply adjustment pipe 20 is connected above the water level joint portion 19. One end of a second water supply pipe 21 is connected to the bottom of the water level joint portion 19, and the other end of the second water supply pipe 21 communicates with the bottom of the steam generator 3. One end of a third drain pipe 23 with a drain valve 22 interposed is connected to the second water supply pipe 21, and the other end of the third drain pipe 23 is connected to the heating chamber 1.

  The heat storage material 7 disposed at the bottom of the water vapor generator 3 has a heat storage material heater 24 installed therein as the heating unit, and the heat storage material 7 is heated by energizing the heat storage material heater 24. It has come to be. In addition, a steam generation heater 25 is disposed inside the steam generator 3. Then, by driving the pump 18, water is supplied from the water tank 2 to the steam generating device 3 through the water supply pipe 16, the first water supply pipe 17, the water level joint portion 19 and the second water supply pipe 21, and is supplied to the steam generation heater 25. By energizing, the water in the steam generator 3 is heated and saturated steam is generated. Further, a steam suction ejector 26 connected to the external circulation path 9 is disposed above the steam generator 3. The saturated water vapor generated by the water vapor generator 3 is sucked into the gas circulating through the external circulation path 9 by the function of the vapor suction ejector 26, passes through the connecting pipe 10, and is installed on the ceiling portion of the heating chamber 1. The superheated steam generator 4 is led.

  The superheated steam generator 4 heats the water vapor from the connecting pipe 10 with a built-in heater 27 to generate superheated steam exceeding 100 ° C. And the superheated steam produced | generated by the superheated steam production | generation apparatus 4 is injected from the several blow hole 28 arrange | positioned two-dimensionally or three-dimensionally at the bottom face of the superheated steam production | generation apparatus 4, and the foodstuff on the support tool 15 6 is supplied.

  The plurality of blow holes 28 are arranged at the center of the ceiling in the heating chamber 1, and are configured to blow superheated steam down to the center of the heating chamber 1. Then, the gas in the heating chamber 1 is sent out from the suction hole 29 provided in the heating chamber 1 to the external circulation path 9 by the blower 11, and is supplied to the steam generator 3, the superheated steam generator 4, and the heating chamber 1. It cycles in order. Thus, as water vapor is supplied, surplus gas in the heating chamber 1 is discharged to the outside from the exhaust port 30 provided at the bottom of the heating chamber 1, and the inside of the heating chamber 1 is maintained at normal pressure. .

  Next, the heating cooking operation by the heating cooker in this Embodiment is demonstrated. FIG.2 and FIG.3 is an enlarged view of the location of the heat storage material 7 in this heating cooker. FIG. 2 shows a state where the heat storage material 7 and the water vapor generating device 3 are separated from each other. FIG. 3 shows a state in which the heat storage material 7 is in contact with the bottom of the water vapor generating device 3. Further, FIG. 4 shows a flowchart of the cooking operation performed under the control of the control device 5.

  In the cooking by the present cooking device, the steam generator 3 can be selectively used as a normal steam generator and a regenerative steam generator according to the type of cooking. For example, when the high temperature cooking menu is selected, the heat storage material 7 is preheated by the heat storage material heater 24 in advance. Then, when cooking is started, the heat storage material 7 is brought into contact with the bottom of the water vapor generating device 3 by the driving device 8, and the heat stored in the heat storage material 7 by the water vapor generating device 3 and the steam generating heater 25 Water is heated by heat, and a sufficient amount of water vapor is generated immediately after the start of cooking. On the other hand, when the low temperature cooking menu is selected, since the temperature in the heating chamber 1 can be maintained even if the amount of power supplied to the steam generator 3 is small, the heating power for generating saturated steam A considerable amount can be assigned to the gas and a large amount of steam can be generated. Therefore, when performing low temperature cooking, the heat storage material heater 24 is not energized in advance, and the heat storage material 7 is not brought into contact with the bottom of the steam generator 3 even when the heat cooking is started. Thus, the water vapor generator 3 heats the water only by the heat from the steam generation heater 25 to generate a sufficient amount of water vapor.

  Hereinafter, the cooking operation will be described in detail according to FIG.

  In step S1, for example, a list of menus is displayed on the screen of an operation panel provided in the cabinet of the heating cooker, thereby prompting the user to select a menu. When the operation panel is operated by the user and a menu is selected, the process proceeds to step S2. In step S2, it is determined whether or not the selected menu is a high temperature cooking menu. If it is a high temperature cooking menu, the process proceeds to step S3, and if not, the process proceeds to step S13.

  In step S3, since the high-temperature cooking menu for cooking with high-temperature superheated steam such as grilling is selected, electric power is supplied to the heat storage material heater 24 and heat energy is stored in the heat storage material 7. Thus, the heat storage material 7 is preheated before cooking is started. In step S4, it is determined whether or not sufficient heat energy has been stored in the heat storage material 7. Note that the criterion for determination in this case is not particularly limited. A heat storage time set in advance from the heat generation amount of the heat storage material heater 24 and the heat capacity of the heat storage material 7 may be used, or the temperature of the heat storage material 7 may be used. As a result, if it is determined that the heat storage amount is sufficient, the process proceeds to step S5. In step S5, "Preheating completed" is notified to the user by display on the screen of the operation panel or a buzzer.

  In step S6, for example, based on an opening / closing signal from a door switch provided on the opening / closing door for opening / closing the opening of the heating chamber 1 or a weight signal from a weight sensor provided on the tray 14, the heating chamber 1 is used. It is detected that food 6 is put into the food. In step S7, for example, when pressing of the “start key” on the operation panel is detected, cooking of the selected high temperature cooking menu is started. In step S8, power supply to the heat storage material heater 24 built in the heat storage material 7 is immediately stopped. At the same time, in step S9, the heat storage material 7 is driven by the drive device 8, and the heat storage material 7 is brought into contact with the water vapor generation device 3 as shown in FIG. In step S10, the pump 18 is driven. Subsequently, in step S11, electric power is supplied to the steam generating heater 25 built in the water vapor generating device 3, and in step S12, electric power is supplied to the heater 27 built in the superheated steam generating device 4.

  With the above operation, the water in the water tank 2 is supplied from the second water supply pipe 21 to the water vapor generating device 3 through the water supply pipe 16, the first water supply pipe 17 and the water level joint portion 19 by driving the pump 18. Is done. At that time, the water supplied in excess of the connection position of the water supply adjustment pipe 20 in the water level joint part 19 returns to the water tank 2 from the water level joint part 19 through the water supply adjustment pipe 20. The water level of the water vapor generating device 3 whose lower part is in communication with the bottom part via the second water supply pipe 21 is kept constant. Thus, the water supplied to the steam generating device 3 becomes saturated steam by the heat stored in the heat storage material 7 and the heat from the steam generating heater 25, and is guided to the superheated steam generating device 4 through the connecting pipe 10. The water vapor heated by the heater 27 is supplied as superheated steam into the heating chamber 1. After that, the process proceeds to step S18.

  In step S13, since the low-temperature cooking menu for cooking with low-temperature superheated steam such as steam cooking is selected, the process immediately waits for cooking without energizing the heat storage material heater 24. Then, for example, based on an opening / closing signal from the door switch or a weight signal from the weight sensor, it is detected that the food 6 has been put into the heating chamber 1. In step S14, for example, when pressing of the “start key” on the operation panel is detected, cooking of the selected low-temperature cooking menu is started. In step S15, the pump 18 is driven. Subsequently, in step S16, electric power is supplied to the steam generating heater 25 built in the water vapor generating device 3, and in step S17, electric power is supplied to the heater 27 built in the superheated steam generating device 4.

  Through the operations in steps S15 to S17 described above, the water supplied to the steam generator 3 by driving the pump 18 becomes saturated steam by heating only by the steam generator 25, and is led to the superheated steam generator 4. The heated steam becomes superheated steam by heating by the heater 27 and is supplied into the heating chamber 1. At that time, the steam generator 3 is operated in a state of being separated from the heat storage material 7. Therefore, the heat from the steam generating heater 25 is not taken away by the heat storage material 7 that does not store heat, and steam can be generated quickly. After that, the process proceeds to step S18.

  In step S18, for example, it is determined whether cooking is completed based on the end of the cooking program, the temperature in the heating chamber 1, the open / close signal from the door switch, the combination thereof, or the like. As a result, when it is determined that cooking is complete, the process proceeds to step S19. In step S19, the power supply to the steam generating heater 25 built in the steam generating device 3 is stopped and turned off. In step S20, the power supply to the heater 27 built in the superheated steam generator 4 is stopped and the power is turned off. In step S21, the driving of the pump 18 is stopped and the cooking operation is finished.

  FIG. 5 is a conceptual diagram of changes in the oxygen concentration, power consumption, steam amount, and heat storage material temperature in the heating chamber 1 during cooking by the main cooking device using the heat stored in the heat storage material 7. . FIG. 6 is a conceptual diagram of changes in oxygen concentration, power consumption, and amount of steam in the heating chamber during cooking using superheated steam by a conventional cooking device that does not use the heat stored in the heat storage material. .

  When a household power source is used, particularly when baking is performed at a high temperature (for example, 150 ° C. to 300 ° C.), a large amount of heating power is required to keep the heating chamber at a high temperature. In the conventional cooking device using superheated steam, the heat source for maintaining the temperature in the heating chamber is a heater built in the superheated steam generator. Therefore, in order to maintain the heating chamber at a high temperature, it is necessary to supply most of the heating power to the heater, and the heating power that can be supplied to the steam generating heater for generating saturated steam is reduced accordingly. For this reason, only a small amount of water vapor (saturated steam) for generating superheated steam can be generated.

  In particular, in the case of high temperature cooking, the heating chamber is rapidly filled with superheated steam so that air can be expelled from the heating chamber and cooking with reduced food oxidation can be achieved. However, in the case of the conventional heating cooker using superheated steam, the amount of superheated steam (that is, the amount of water vapor generated) supplied to the heating chamber is small, and as shown in FIG. The air cannot easily be expelled, and the oxidation of the food is inevitable.

  In contrast, according to the present embodiment, since the heat stored in the heat storage material 7 is used as heat for generating saturated steam, the heating power that can be supplied to the steam generating heater 25 for generating saturated steam is small. However, the amount of heating for generating steam can be supplemented by the heat radiation of the heat storage material 7, and a large amount of superheated steam can be generated at a high temperature immediately after the start of cooking, as shown in FIG. The air can be expelled rapidly.

  When the heat stored in the heat storage material 7 is consumed and the temperature of the heat storage material becomes 100 ° C. or lower, the supply of heat from the heat storage material 7 is lost, so that the amount of steam supplied decreases as shown in FIG. Become. However, since the heating chamber 1 is already sufficiently filled with superheated steam at this time, there is no particular problem even if the amount of supplied steam is small.

  As described above, in the present embodiment, the heat stored in the heat storage material 7 can be used as heat for generating saturated steam. Therefore, when performing the said high temperature cooking, a large amount of superheated steam can be supplied in the heating chamber 1 at the time of a cooking start. Therefore, the indoor atmosphere introduced into the heating chamber 1 can be quickly eliminated, the oxygen concentration in the heating chamber 1 can be quickly reduced, and a large amount of steam is supplied into the heating chamber 1. can do. As a result, the amount of superheated steam condensing on the surface of the food 6 is increased, and the food 6 can be quickly heated by a large amount of condensation heat.

  On the other hand, when the low temperature cooking is performed, the heat storage material 7 is not stored, and the heat storage material 7 is cooked in a state of being separated from the steam generator 3. Therefore, it is possible to prevent the heat from the steam generating heater 25 from being taken away by the heat storage material 7 that is not storing heat, quickly generate water vapor, and supply a sufficient amount of superheated steam into the heating chamber 1.

-2nd Embodiment The heating cooker in this Embodiment has the structure substantially the same as the structure of the heating cooker of the said 1st Embodiment shown in FIG. Hereinafter, the same member numbers as those in FIG. 1 are assigned to the same members as those in the heating cooker according to the first embodiment, and detailed description thereof will be omitted.

  FIG. 7 is an enlarged view around the heat storage material 7 for explaining the characteristics of the present embodiment. The heat storage material 7 in the heating cooker is provided with a temperature sensor 31 as the temperature detection unit that detects the temperature of the heat storage material 7 and outputs a temperature signal representing the detected temperature to the control device 5.

  FIG. 8 shows a part of a flowchart of a cooking operation performed under the control of the control device 5. The flowchart shown in FIG. 8 is inserted between step S12 and step S18 in the flowchart of the cooking operation shown in FIG. However, when the heater 27 of the superheated steam generator 4 is turned on in step S17, the process proceeds to step S18 as in the case of the first embodiment. Hereinafter, the cooking operation according to the present embodiment will be described in detail with reference to FIGS.

  When electric power is supplied to the heater 27 of the superheated steam generator 4 in step S12 in the flowchart of the cooking operation shown in FIG. 4, the process proceeds to step S31 in the flowchart of the cooking operation shown in FIG.

  In step S31, based on the temperature signal from the temperature sensor 31, it is determined whether or not the temperature of the heat storage material 7 has fallen below 100 ° C. As a result, when the temperature is 100 ° C. or higher, the process waits for the temperature to fall below 100 ° C., whereas when the temperature falls below 100 ° C., the process proceeds to step S32. When the temperature of the heat storage material 7 falls below 100 ° C., the heat transfer from the heat storage material 7 is lost. Therefore, in step S32, the heat storage material 7 is driven by the driving device 8 to separate the heat storage material 7 from the water vapor generating device 3.

  When the temperature of the heat storage material 7 is 100 ° C. or higher, the heat is transferred from the heat storage material 7 to the water vapor generation device 3, but when the temperature of the heat storage material 7 is lower than 100 ° C., the water vapor generation device is reversed. The heat is taken away from 3 toward the heat storage material 7. Therefore, by controlling the heat storage material 7 to be separated from the water vapor generation device 3 by controlling as described above, heat transfer from the water vapor generation device 3 to the heat storage material 7 is eliminated, and water vapor can be generated efficiently. is there. After that, the process proceeds to step S18 in the flowchart of the cooking operation shown in FIG.

  As described above, in the present embodiment, the temperature sensor 31 for detecting the temperature of the heat storage material 7 is provided, and the steam cooking heater 3 built in the steam generator 3 is selected when the high temperature cooking menu is selected. When 25 is turned on and the heater 27 built in the superheated steam generator 4 is turned on, it is determined whether or not the temperature of the heat storage material 7 is lower than 100 ° C. based on the detected temperature signal from the temperature sensor 31. To do. When the temperature of the heat storage material 7 falls below 100 ° C., the heat storage material 7 is separated from the water vapor generation device 3 by the drive device 8 to prevent the heat storage material 7 from taking heat of the water vapor generation device 3. Yes. Therefore, the water vapor generator 3 can efficiently generate water vapor.

  In the above embodiments, the specific configuration of the driving device 8 that drives the heat storage material 7 to contact and separate from the water vapor generating device 3 is not particularly limited. For example, as shown in FIGS. 1-3, the apparatus using a cam mechanism may be sufficient, and the apparatus using an electromagnetic force may be sufficient.

  Moreover, the shape of the contact location in the said steam generator 3 and the thermal storage material 7 is not limited to the shape shown in FIGS. For example, “folds” may be provided on the contact surfaces of the steam generator 3 and the heat storage material 7 so that a wider contact area can be obtained.

  Each said embodiment is an illustration and restrictive at no points. The scope of the present invention is not limited to the above description, but is defined by the scope of the claims, and includes all modifications equivalent to the scope of the claims.

It is the schematic which shows the structure in the heating cooker of this invention. It is a figure which shows the state which the heat storage material and water vapor | steam generator in FIG. 1 contacted. It is a figure which shows the state which the thermal storage material and water vapor | steam generator in FIG. 1 separated. It is a flowchart of the heating cooking operation performed under control by the control apparatus in FIG. It is a figure which shows the change of the oxygen concentration in a heating chamber, power consumption, the amount of steam, and the heat storage material temperature at the time of the cooking by the heating cooker shown in FIG. It is a figure which shows the change of the oxygen concentration in a heating chamber, power consumption, and the amount of steam at the time of the cooking by the conventional heating cooker which does not utilize heat storage. It is an enlarged view of the heat storage material periphery which shows the structure in the heating cooker different from FIG. It is a figure which shows a part of flowchart of the heating cooking operation | movement by the heating cooker shown in FIG.

Explanation of symbols

1 ... heating room,
2 ... Water tank,
3 ... steam generator,
4 ... Superheated steam generator,
5. Control device,
7 ... heat storage material,
8 ... Drive device,
9 ... External circuit,
10: Connecting pipe,
11 ... Blower,
12 ... exhaust port,
13 ... Damper,
16 ... Water pipe,
17 ... 1st water supply pipe,
18 ... pump,
19 ... Water level joint part,
20 ... Water supply adjustment pipe,
21 ... second water supply pipe,
22 ... Drain valve,
23. Third drain pipe,
24 ... Heat storage material heater,
25 ... Steam generating heater,
26 ... Vapor suction ejector,
27 ... heater,
28 ... Fumarole,
29 ... suction hole,
30 ... exhaust port,
31 ... Temperature sensor.

Claims (4)

A water vapor generating part for generating water vapor;
A superheated steam generator for heating the steam generated in the steam generator to superheated steam;
A cooking chamber for storing the cooking object and heating the cooking object with the superheated steam generated in the superheated steam generation unit;
A heat storage unit that is disposed in the vicinity of the water vapor generation unit, has a heating unit, and stores heat by heating by the heating unit;
A heating cooker comprising: a drive unit that drives the heat storage unit to contact and separate from the water vapor generation unit. The heating cooker according to claim 1, wherein
When performing high-temperature cooking including grilled cooking, after operating the heating unit to store heat in the heat storage unit, at the start of cooking, operate the driving unit to bring the heat storage unit into contact with the water vapor generation unit. A cooking device comprising a control unit. The cooking device according to claim 2,
A temperature detection unit that detects the temperature of the heat storage unit and outputs a temperature signal representing the detection temperature,
In the case of performing the high temperature cooking, the control unit brings the heat storage unit into contact with the water vapor generation unit at the start of cooking, and then sets the temperature of the heat storage unit to 100 ° C. based on a temperature signal from the temperature detection unit. It is determined whether or not the temperature of the heat storage unit is lower than 100 ° C., and the drive unit is operated to separate the heat storage unit from the water vapor generation unit. A heating cooker. The heating cooker according to claim 1, wherein
When performing low temperature cooking including steam cooking, the operation of the heating unit and the driving unit is controlled to store heat in the heat storage unit, and the heat storage unit is separated from the water vapor generation unit And the cooking device characterized by including the control part which starts cooking.

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