JP2014048004A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooker rapidly grilling in a short time by properly changing the distance between a material to be heated and a heater regardless of the height of the material to be heated, specifically, capable of deliciously cooking the material to be cooked.SOLUTION: The cooker includes: a heating chamber 2; a movable heater 6 whose position set in the heating chamber is changeable; a position changing part which changes the position of the movable heater; a control part which controls the position changing part; and height detecting means which detects the height of a material to be heated. The control part changes the position of the movable heater by controlling the position changing part in accordance with the detection result of the height detecting means.

Description

  The present invention relates to a heating cooker with a heater for cooking an object to be heated in a heating chamber.

  For example, a heating device disclosed in Japanese Utility Model Publication No. 62-20152 has a movable heater that changes the distance from an object to be heated only in two steps in the upper part of the oven cabinet, and a fixed heater that is arranged in the lower part of the oven cabinet. A heater, a lever for setting the movable heater at a predetermined position in the oven cooking state or a position near the heated object in the grill cooking state, and half-wave by connecting the diode in series with the movable heater by operating the lever A switch for selecting whether to energize, and when the movable heater is set at a predetermined position in the oven cooking state, half-wave energization is performed on the movable heater and full-wave energization is performed on the fixed heater, and the grill cooking state is set. When this is done, full-wave energization is applied to the movable heater and the fixed heater.

  Thereby, the position of the heater in two stages is switched by the oven cooking function and the grill cooking function, and in the case of grill cooking, the heater is brought closer to the object to be heated and the radiant heat at a higher temperature is irradiated so as to burn more quickly. In oven cooking, it is possible to cook with a predetermined ambient temperature without unnecessarily scorching away from the heater. Accordingly, the heater output is switched to high output for grill cooking and to low output for oven cooking.

Shokai 62-20152 (released October 29, 1979)

  In the above-mentioned conventional invention, when cooking on the grill, the heater is brought close to the object to be heated so that it can be burnt or cooked quickly, but the height is not uniform depending on the type and form of the object to be heated. It is difficult to set the distance between the object and the heater appropriately. For example, when the height of the object to be heated is high, the object to be heated and the heater are closer than necessary and the object to be heated is too burnt. There are challenges.

  The present invention solves such a conventional problem, and in a cooking device that performs cooking by changing the position of the movable heater, the distance between the object to be heated and the heater according to the height of the object to be heated. It is an object of the present invention to provide a cooking device capable of appropriately changing the cooking rate and cooking quickly in a short time, i.e., finishing a heated object deliciously.

  In order to achieve this object, a heating cooker according to the present invention includes a heating chamber, a movable heater that can change the position provided in the heating chamber, a position changing unit that changes the position of the movable heater, A control unit that controls the position changing unit and a height detection unit that detects the height of the object to be heated are provided, and the control unit controls the position changing unit according to a detection result of the height detection unit. Thus, the position of the movable heater is changed.

  According to this configuration, the position of the movable heater can be changed according to the height of the object to be heated, and the distance between the object to be heated and the movable heater can be changed. It becomes possible to. Furthermore, the positional relationship between the heated object and the movable heater can be appropriately controlled even when the height of the heated object changes during cooking.

  Further, the control unit changes the position of the movable heater by controlling the position changing unit so that the object to be heated and the movable heater are not in contact with each other according to a detection result of the height detection unit. May be. According to this structure, it can suppress that a to-be-heated object and a movable heater contact even when the height of a to-be-heated object changes during cooking.

  In addition, the control unit controls the position changing unit so that the object to be heated and the movable heater maintain a certain distance according to a detection result of the height detection unit, thereby controlling the position of the movable heater. The position may be changed. According to this configuration, even when the height of the object to be heated changes during cooking, the object to be heated and the movable heater can maintain a certain distance.

  The controller may further include a timer for setting the energization time, and the control unit may change the position of the movable heater by controlling the position changing unit according to the energization time of the timer. According to this configuration, the distance between the object to be heated and the movable heater can be changed according to the cooking time.

  Further, the apparatus further comprises temperature detecting means for detecting the surface temperature of the object to be heated, and the control unit controls the position changing unit according to the surface temperature of the object to be heated detected by the temperature detecting means. The position of the movable heater may be changed. According to this configuration, the distance between the heated object and the movable heater can be changed according to the surface temperature of the heated object.

  The controller may change the output of the movable heater according to the energization time of the timer. According to this structure, the output of a movable heater can be changed according to cooking time.

  Further, the control unit may change the output of the movable heater according to the surface temperature of the heated object detected by the temperature detecting means. According to this configuration, the output of the movable heater can be changed according to the surface temperature of the object to be heated.

  The cooking device according to the present invention can change the position of the movable heater according to the height of the object to be heated, and can change the distance between the object to be heated and the movable heater. Since an appropriate positional relationship can be obtained, grill cooking can be performed quickly in a short time, that is, the heated object can be finished deliciously. Furthermore, since the positional relationship between the heated object and the movable heater can be appropriately controlled even when the height of the heated object changes during cooking, it is possible to prevent the heated object from being burned too much and Can be cooked to.

The schematic perspective view which looked at the heating cooker of the 1st Embodiment of this invention from diagonally upward 1 is a schematic side sectional view showing a heating cooker according to a first embodiment of the present invention. Schematic front sectional view showing the cooking device of the first embodiment of the present invention (schematic front sectional view showing the state of step S1 in FIG. 7) Schematic which shows the control part of the 1st Embodiment of this invention, and its peripheral circuit Schematic which shows the position change part of the 1st Embodiment of this invention, and its peripheral part Schematic view of FIG. 5 viewed from the right side The flowchart which shows the basic operation | movement of the heating cooker of the 1st Embodiment of this invention. FIG. 7 is a schematic front cross-sectional view showing a state of transition from step S4 to step S5 in FIG. Schematic front sectional view showing the state of step S7 in FIG. Schematic side sectional view showing a heating cooker according to a second embodiment of the present invention. The flowchart which shows the basic operation | movement of the heating cooker of the 2nd Embodiment of this invention. Schematic side sectional view showing a cooking device of a third embodiment of the present invention The flowchart which shows the basic operation | movement of the heating cooker of the 3rd Embodiment of this invention.

Embodiment 1
A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view of a heating cooker used in the present embodiment as viewed obliquely from above. As shown in FIG. 1, the heating cooker used for this embodiment is provided with the main body 1 and the door 3 which can open and close the heating chamber 2 (refer schematic sectional drawing of FIG. 2). In addition, an operation unit 4 for performing various operations related to cooking of the object to be heated is provided on the front surface of the main body 1.

  FIG. 2 is a schematic side sectional view of the heating cooker used in the present embodiment. FIG. 3 is a schematic front sectional view of a heating cooker used in the present embodiment. As shown in FIGS. 2 and 3, the heating cooker used in the present embodiment includes a main body 1, a heating chamber 2, and a door 3 that can open and close the heating chamber 2.

  In the heating chamber 2, a cooking net 5 for placing an object to be heated, a movable heater 6 movable above and below the cooking net 5, a fixed heater 7 located below the cooking net 5, A reflecting plate 8 is provided above the movable heater 6 to reflect the heat of the movable heater 6.

  In addition, an infrared light emitting unit 9 and an infrared light receiving unit 10 corresponding to the infrared light emitting unit 9 are provided on the left and right side surfaces of the heating chamber 2 below the movable heater 6, and the movable heater 6, In addition, a slit A 11a, a slit B 11b, and a slit C 11c are provided so that the reflector 8 can move up and down. The movable heater 6 passes through the slit A 11 a and is fixed to the connecting plate 12 in a space inside the main body 1 and outside the heating chamber 2. The reflecting plate 8 is fixed to the connecting plate 12 through a connecting portion (not shown) that passes through the slit B 11b and the slit C 11c.

  Further, an infrared sensor 13 for detecting the surface temperature of the object to be heated is provided on the side surface of the heating chamber 2.

  FIG. 4 is a schematic block diagram showing the controller 14 of the heating cooker used in this embodiment and the circuit configuration connected thereto. The control unit 14 includes an operation unit 4, a movable heater 6, a fixed heater 7, an infrared light emitting unit 9 that is a height detecting unit, an infrared light receiving unit 10, an infrared sensor 13 that is a temperature detecting unit, and a movable unit. A position changing unit 15 that changes the position of the heater 6 is connected.

  The control unit 14 controls the movable heater 6, the fixed heater 7, and the position changing unit 15 based on information input from the operation unit 4, the infrared light emitting unit 9, the infrared light receiving unit 10, and the infrared sensor 13, and performs cooking by heating. To do.

  FIG. 5 is a schematic view of the position changing unit 15 used in the present embodiment and its peripheral portion as viewed from the side surface of the main body 1. FIG. 6 is a schematic view of FIG. 5 viewed from the right side. The position changing unit 15 used in this embodiment includes a connecting plate 12, a motor 16, a pinion 17, and a rack 18.

  As shown in FIGS. 5 and 6, in addition to the movable heater 6, the connecting plate 12 is fixed with a reflecting plate 8, an infrared light emitting unit 9, an infrared light receiving unit 10, and a motor 16. The infrared light receiving unit 10 is configured to maintain a certain distance from the movable heater 6. A pinion 17 is fixed to the shaft of the motor 16, and the pinion 17 is combined with a rack 18 fixed to the main body 1.

  When the control unit 14 controls the position changing unit 15 so as to change the position of the movable heater 6 based on information of the infrared light receiving unit 10 and the infrared sensor 13, the shaft of the motor 16 rotates. When the shaft of the motor 16 rotates, the pinion 17 fixed to the shaft of the motor 16 also rotates at the same time, and the rotational force of the motor 16 is converted into linear motion by the rack 18 combined with the pinion 17.

  Since the rack 18 is fixed to the main body 1, the connecting plate 12 moves up and down, and the movable heater 6 that is fixed to the connecting plate 12 and penetrates the left and right side surfaces of the heating chamber 2 moves up and down along the slit 11 a. It can be moved to.

  The operation of the cooking device configured as described above will be described. FIG. 7 is a flowchart showing the basic operation of the cooking device according to the first embodiment of the present invention.

  First, the S0 step is started in a state where an object to be heated is placed on the cooking net 5 and the door 3 is closed. In step S0, as an input operation, the operation unit 4 on the front surface of the main body 1 controls the movable heater 6, sets the heating time, and the like, and inputs the information to the control unit.

In step S <b> 1, in response to the input operation in step S <b> 0, the control unit 14 performs control so that infrared light is emitted from the infrared light emitting unit 9 toward the infrared light receiving unit 10. (See Figure 3)
In step S2, the control unit 14 determines whether or not the infrared light receiving unit 10 can receive the infrared light emitted from the infrared light emitting unit 9. If the light can be received, the control unit 14 lowers the movable heater 6. If the light cannot be received. The process proceeds to step S8 where the movable heater 6 and the fixed heater 7 are energized to start cooking. Here, the initial position of the movable heater 6 is set so that the tallest object to be heated can be placed on the cooking net 5, and the short thing to be heated is also placed on the cooking net 5 so as to be easily placed on the cooking net 5. Therefore, the movable heater 6 cannot be raised beyond that. Therefore, before moving from step S2 to step S8, the user may be notified of whether the object to be heated is too close to the movable heater 6 by display or sound.

  In step S3, based on the detection result of the infrared light receiving unit 10, the control unit 14 controls the position changing unit 15 to lower the position of the movable heater 6.

  In step S4, while the position of the movable heater 6 is lowered, the control unit 14 determines whether or not the infrared light receiving unit 10 can receive the infrared light emitted from the infrared light emitting unit 9. In order to continue the operation of lowering the position, the process proceeds to step S3, and when light cannot be received (see FIG. 8), the process proceeds to step S5 where the movable heater 6 is raised.

  In step S5, the control unit 14 controls the position changing unit 15 to raise the position of the movable heater 6 based on the result that the infrared light receiving unit 10 cannot receive the infrared light emitted from the infrared light emitting unit 9. Here, the state in which infrared rays cannot be received indicates that the movable heater 6 and the object to be heated are within a predetermined distance.

  In step S6, while the position of the movable heater 6 is raised, the control unit 14 determines whether or not the infrared light receiving unit 10 can receive infrared light emitted from the infrared light emitting unit 9, and can receive light (see FIG. 9). Shifts to step S7 to stop the movement of the movable heater 6, and to step S5 in order to continue the operation of raising the position of the movable heater 6 if light cannot be received.

  In step S7, based on the detection result of the infrared light receiving unit 10, when the movable heater 6 and the object to be heated are at a predetermined distance, the control unit 14 causes the position changing unit to stop moving the movable heater 6. 15 is controlled.

  In step S8, the control unit 14 performs control so that the movable heater 6 whose position is changed to a predetermined distance from the object to be heated and the fixed heater 7 are energized, and starts cooking the object to be heated.

  In step S9, the control unit 14 determines whether or not the heating time (set time) set in step S0 has been reached. If the set time has been reached, the process proceeds to step S10, where the set time has not been reached. Moves to step S6. After moving to step S6, if the height of the object to be heated does not increase during cooking, the infrared light receiving unit 10 continues to receive infrared rays, so the movement stop of the movable heater 6 is maintained in step S7, and in step S8. Energization of the movable heater 6 and the fixed heater 7 is maintained until a set time. However, when cooking rice cake or the like, the height of the object to be heated may increase during cooking, and the infrared light receiving unit 10 may not be able to receive the infrared light emitted from the infrared light emitting unit 9. At that time, the process proceeds to step S5 to perform an operation of raising the position of the movable heater 6. Thereafter, the same operation as described above is repeated until the set time.

  In step S10, the control unit 14 performs control so as to stop the energization of the movable heater 6 and the fixed heater 7, and ends the cooking.

  In step S11, the control unit 14 controls the position changing unit 15 to return the movable heater 6 to the initial position, and the cooking operation ends.

  With the above operation, the height of the object to be heated can be accurately detected, and the object to be heated and the movable heater 6 can be properly positioned, and grill cooking can be performed in a short time. As a result, power consumption can be reduced and the heated object can be finished deliciously. In addition, even if the height of the heated object may change during cooking, the heated object and the movable heater 6 can be prevented from approaching more than necessary. Can be prevented from burning too much. Furthermore, since it becomes possible to suppress that a to-be-heated material and the movable heater 6 contact, the contamination of the movable heater 6 by the to-be-heated material adhering to the surface of the movable heater 6 and scorching can be prevented.

  Further, the infrared light emitting unit 9 and the infrared light receiving unit 10 corresponding to the infrared light emitting unit 9 are not limited to being provided, but a plurality of infrared light receiving units 10 may be provided. For example, when two infrared light emitting units 9 and two infrared light receiving units 10 corresponding to the infrared light emitting units 9 are provided, the control unit 14 receives infrared light emitted from the infrared light emitting unit 9 at an infrared light receiving unit provided above. The unit 10 can receive light and can be controlled so as to maintain a state where the infrared light receiving unit 10 provided below cannot receive light. If it does so, even if the height of the heated object may become low during cooking, it becomes easy to keep the distance between the heated object and the movable heater 6 constant, and the finished state of the heated object varies. Can be prevented from occurring.

  For example, in the case where three infrared light emitting units 9 and three infrared light receiving units 10 corresponding to the infrared light emitting units 9 are provided, the control unit 14 uses the infrared light emitted from the infrared light emitting unit 9 as the uppermost infrared light. The light receiving unit 10 can receive light, and control is performed so that light cannot be received by the two infrared light receiving units 10 provided in the middle and the lowermost position, or light is received by the two infrared light receiving units 10 provided in the uppermost and middle positions. The infrared light receiving unit 10 provided at the lowermost position can be controlled so that it cannot receive light. If it does so, it will also become easy to change the distance of a to-be-heated object and the movable heater 6 suitably.

  Further, a timer for setting the energization time may be provided in the operation unit 4 so that the position and output of the movable heater 6 are controlled by the energization time. For example, if the energization time is increased and the distance between the object to be heated and the movable heater 6 is controlled to be increased, the object to be heated can be prevented from being excessively burned and uneven baking, and the energization time is increased and the movable heater 6 is increased. If the output is controlled to be low, overheating of the object to be heated and uneven baking can be suppressed, and power consumption can be reduced.

  Further, the surface temperature of the object to be heated may be detected by the infrared sensor 13 during cooking, and the position and output of the movable heater 6 may be controlled based on the information. For example, when the surface temperature of the object to be heated is too high, if the distance between the object to be heated and the movable heater 6 is controlled to be far away, the object to be heated is prevented from being too scorched and unevenly burned. The cooking state can be kept good according to the surface temperature of the steel, and if the energization time is increased and the output of the movable heater 6 is controlled to be low, the object to be heated is not burned too much and uneven baking is suppressed. The cooking state can be kept good according to the surface temperature of the heated object, and the power consumption can be reduced.

  In the present embodiment, the movable heater 6 is provided above the cooking net 5 and the fixed heater 7 is provided below the cooking net 5, but the present invention is not limited thereto. For example, the movable heater 6 may be provided both above and below the cooking net 5 and the fixed heater 7 may not be provided.

  In this embodiment, the movable heater 6 and the fixed heater 7 are energized after the position of the movable heater 6 is changed. However, the present invention is not limited to this. For example, the position of the movable heater 6 may be changed after the movable heater 6 and the fixed heater 7 are energized. Further, either the movable heater 6 or the fixed heater 7 may be energized before the position of the movable heater 6 is changed, and the other may be energized after the position of the movable heater 6 is changed.

[Embodiment 2]
A second embodiment of the present invention will be described below with reference to the drawings. FIG. 10 is a schematic side cross-sectional view showing the heating cooker according to the second embodiment of the present invention. The present embodiment will be described with a focus on differences from the first embodiment. The second embodiment is different in that the infrared light emitting unit 9 and the infrared light receiving unit 10 are not connected to the connecting plate 12 and are provided on the left and right side portions of the heating chamber 2 so as to face each other. However, other parts are the same as those of the first embodiment.

  Operation | movement of the heating cooker of 2nd Embodiment is demonstrated. FIG. 11 is a flowchart showing the basic operation of the heating cooker according to the second embodiment of the present invention.

  First, the S0 step is started in a state where an object to be heated is placed on the cooking net 5 and the door 3 is closed. Steps S0 and S1 have the same contents as those in the first embodiment, and a description thereof will be omitted.

  In step S2, the control unit 14 determines whether there is an infrared light receiving unit that can receive infrared light emitted from the infrared light emitting unit 9 among the plurality of infrared light receiving units 10, and there is the infrared light receiving unit 10 that can receive light. If not, the process proceeds to step S3 where the movable heater 6 is lowered. If there is no infrared light receiving unit 10 capable of receiving light, the process proceeds to step S4 where the movable heater 6 and the fixed heater 7 are energized to start cooking. Here, the initial position of the movable heater 6 is set so that the tallest object to be heated can be placed on the cooking net 5, and the short thing to be heated is also placed on the cooking net 5 so as to be easily placed on the cooking net 5. Therefore, the movable heater 6 cannot be raised beyond that. Therefore, the user may be notified of whether or not the object to be heated is too close to the movable heater 6 by display or sound before shifting from step S2 to step S4.

  In step S3, based on the detection result of the infrared light receiving unit 10, the control unit 14 is slightly less than the lowermost infrared light receiving unit 10 among the infrared light receiving units 10 that can receive infrared light emitted from the infrared light emitting unit 9. The position changing unit 15 is controlled to lower the position of the movable heater 6 to the upper side. Note that the position of the movable heater 6 is controlled by the controller 14 by the number of rotations of the motor 16 and the like.

  In step S4, the control unit 14 performs control so that the movable heater 6 whose position is changed to a predetermined distance from the object to be heated and the fixed heater 7 are energized, and starts cooking the object to be heated.

  In step S5, the control unit 14 determines whether or not there is a change in the infrared light receiving unit 10 that receives the infrared light emitted from the infrared light emitting unit 9. If there is no change, the process proceeds to step S6. The process proceeds to step S3.

  In step S6, the control unit 14 determines whether or not the heating time set in step S0 has been reached. If the set time has been reached, the process proceeds to step S7, and if not, the process proceeds to step S5. Transition.

  In step S7, the control unit 14 performs control so as to stop the energization of the movable heater 6 and the fixed heater 7, and ends the cooking.

  In step S8, the control unit 14 controls the position changing unit 15 to return the movable heater 6 to the initial position, and the cooking operation ends.

  With the above operation, substantially the same effect as in the first embodiment can be obtained. Further, in the present embodiment, the infrared light emitting unit 9 and the infrared light receiving unit 10 are provided on both sides of the movable heater 6, but it is not necessary to be limited thereto. For example, the infrared light emitting unit 9 and the infrared light receiving unit 10 may be provided only on one side of the movable heater 6. Furthermore, the infrared light emitting unit 9 and the infrared light receiving unit 10 are preferably provided in the vicinity of the movable heater 6. By doing so, it can control more precisely that a to-be-heated material and movable heater 6 contact.

[Embodiment 3]
A third embodiment of the present invention will be described below with reference to the drawings. FIG. 12: is a schematic sectional side view which shows the heating cooker of the 3rd Embodiment of this invention. The present embodiment will be described with a focus on differences from the first and second embodiments. The third embodiment does not include the reflecting plate 8, the infrared light emitting unit 9, and the infrared light receiving unit 10, and includes the ultrasonic sensor 19, but the other parts are the same as those of the first and second embodiments. It is the same.

  Operation | movement of the heating cooker of 3rd Embodiment is demonstrated. FIG. 13 is a flowchart showing the basic operation of the heating cooker according to the third embodiment of the present invention.

  First, the S0 step is started in a state where an object to be heated is placed on the cooking net 5 and the door 3 is closed. Since the S0 step has the same contents as in the first embodiment, description thereof is omitted.

  In step S1, in response to the input operation in step S0, the control unit 14 performs control so that ultrasonic waves are transmitted from the ultrasonic sensor 19 toward the object to be heated.

  In step S2, the ultrasonic wave transmitted from the ultrasonic sensor 19 is reflected by the object to be heated, and the reflected ultrasonic wave is received by the ultrasonic sensor 19, and the control unit 14 measures the time from transmission to reception. By doing so, the distance to the object to be heated is detected.

  In step S3, based on the detection result of the ultrasonic sensor 19, the control unit 14 controls the position changing unit 15 so that the movable heater 6 is positioned at a predetermined distance from the object to be heated. Here, the initial position of the movable heater 6 is positioned so that the tallest object to be heated can be placed on the cooking net 5, and also the short thing to be heated is placed on the cooking net 5 in an easy manner. Therefore, the movable heater 6 cannot be raised beyond that. Therefore, when the position of the movable heater 6 is not changed, the user is notified whether the object to be heated is too close to the movable heater 6 by display or sound before proceeding to step S4. good.

  In step S4, the control unit 14 performs control so that the movable heater 6 whose position is changed to a predetermined distance from the object to be heated and the fixed heater 7 are energized, and starts cooking the object to be heated.

  In step S5, the control unit 14 determines whether or not there is a predetermined change in the information and result detected by the ultrasonic sensor 19, and if there is no predetermined change, the process proceeds to step S6, and there is a predetermined change. For example, the process proceeds to step S3.

  In step S6, the control unit 14 determines whether or not the heating time set in step S0 has been reached. If the set time has been reached, the process proceeds to step S7, and if not, the process proceeds to step S5. Transition.

  In step S7, the control unit 14 performs control so as to stop the energization of the movable heater 6 and the fixed heater 7, and ends the cooking.

  In step S8, the control unit 14 controls the position changing unit 15 to return the movable heater 6 to the initial position, and the cooking operation ends.

  With the above operation, substantially the same effect as in the first and second embodiments can be obtained. Moreover, in this embodiment, although the reflecting plate 8 is not provided, it does not need to be limited to it. For example, a reflector that does not interfere with detection by the ultrasonic sensor 19 may be provided.

  As mentioned above, although Embodiment 1-Embodiment 3 were concretely demonstrated, this invention is not limited to them. Embodiments obtained by appropriately combining the technical means disclosed in the above-described embodiments are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Main body 2 Heating chamber 3 Door 4 Operation part 5 Cooking net 6 Movable heater 7 Fixed heater 8 Reflector 9 Infrared light emission part 10 Infrared light reception part 11a Slit A
11b Slit B
11c Slit C
DESCRIPTION OF SYMBOLS 12 Connection board 13 Infrared sensor 14 Control part 15 Position change part 16 Motor 17 Pinion 18 Rack 19 Ultrasonic sensor

Claims (7)

  A heating chamber, a heater provided in the heating chamber, the position of which can be changed, a position changing unit for changing the position of the heater, a control unit for controlling the position changing unit, and a height of an object to be heated are detected. A heating cooker comprising: a height detecting means for changing the position of the heater according to a detection result of the height detecting means.   The cooking device according to claim 1, wherein a position of the heater is changed so that the object to be heated and the heater do not come into contact with each other.   The cooking device according to claim 1, wherein the position of the heater is changed so that the object to be heated and the heater maintain a predetermined distance.   The cooking device according to claim 1, further comprising a timer for setting an energization time, wherein the position of the heater is changed according to the energization time of the timer.   The temperature detection means which detects the surface temperature of the said to-be-heated object is further provided, The position of the said heater is changed with the surface temperature of the said to-be-heated object detected by the said temperature detection means. The heating cooker described in 1.   The cooking device according to claim 1, further comprising a timer for setting an energization time, wherein when the position of the heater is changed, the output of the heater is changed according to the energization time of the timer.   Temperature detection means for detecting the surface temperature of the object to be heated is further provided, and when the position of the heater is changed, the output of the heater is changed according to the surface temperature of the object to be heated detected by the temperature detection means. The cooking device according to any one of claims 1 to 3.