JP2008032293A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably and quickly discharge a heating chamber exhaust prior to the next heating cooking without using a humidity sensor. <P>SOLUTION: During cooking with a vapor cooking menu, an exhaust vapor counter is set at "a maximum value" when superheated vapor is filled up in the heating chamber 20. Thus, when exhausting vapor over a predetermined time before finishing cooking, the exhaust vapor counter counts down from the "the maximum value", whereby vapor remaining in the heating chamber 20 is detected in accordance with a value for the exhaust vapor counter and exhausting operation is performed until the detection result shows "a predetermined vapor amount". As a result, the vapor in the heating chamber is reliably exhausted prior to the next heating cooking without using the humidity sensor. Furthermore, the exhausting operation is stopped in accordance with the detection result for the vapor remaining in the heating chamber 20, and so quick exhausting operation is performed independent of the cooking menu, compared with exhausting operation only for a certain time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device that cooks food using steam.

  As a heating cooker that performs heating cooking of an object to be heated such as food using heating steam, there is a heating apparatus using superheated steam disclosed in JP-A-2002-272604 (Patent Document 1). In this heating apparatus using superheated steam, superheated steam obtained by heating the water in the tank with the heat storage material in the heat storage tank is jetted into the heating box by the jetting means to heat the object to be heated. Yes.

  By the way, in such a heating cooker, the temperature in the heating chamber is usually detected and cooking is performed based on the temperature in the heating chamber and a predetermined cooking program. And when cooking of one menu is completed, the heating chamber is filled with steam. Therefore, when cooking of one menu is finished and cooking of the next menu is started, if the temperature in the heating chamber does not fall below the temperature defined by the cooking program of the menu, the cooking program of the menu There is a problem that you cannot start.

  Therefore, as a cooking device for coping with such a problem, there is a high-frequency heating device disclosed in Japanese Patent Application Laid-Open No. 57-182993 (Patent Document 2) and Japanese Patent Application Laid-Open No. 57-202096 (Patent Document 3). . In this high-frequency heating device, the humidity or gas concentration in the heating chamber is detected by a humidity sensor or a gas concentration sensor, and if the humidity or gas concentration in the heating chamber exceeds a set value, the humidity or gas concentration is detected by a cooling fan or the like. The humidity adjustment operation or the gas concentration adjustment operation is performed until becomes the set value, and then the heating operation is started, and the operation of the magnetron or the heater is controlled by the change of the output value of the humidity sensor or the gas concentration sensor.

  As described above, in the conventional high-frequency heating devices disclosed in Patent Document 2 and Patent Document 3, the humidity or gas concentration in the heating chamber is detected using the humidity sensor or the gas concentration sensor. The humidity sensor and the gas concentration sensor do not cause a problem because the amount of steam is small when detecting steam generated from an object to be heated as the heating state progresses, as in a high-frequency heating device. However, in the case of heating an object to be heated with superheated steam as in the heating device disclosed in Patent Document 1, since the heating chamber is almost filled with steam, condensation occurs in the humidity sensor and the gas concentration sensor, There is a problem that it becomes unusable due to condensed water.

  Therefore, there is a high-frequency heating device disclosed in Japanese Patent Laid-Open No. 6-45061 (Patent Document 4) as a heating cooker that addresses the above-described problems. In this high-frequency heating device, the steam in the heating chamber is exhausted by a fan for a predetermined time (15 seconds) prior to cooking by the magnetron. In this case, it becomes possible to eliminate the necessity of using a humidity sensor or a gas concentration sensor.

In this case, when the steam in the heating chamber is generated from an object to be heated as in a high-frequency heating device, the steam in the heating chamber is exhausted in an exhaust time of about 15 seconds. When the object to be heated is heated with superheated steam as in the heating device disclosed in (1), the heating chamber is almost filled with steam, so that a long time is required for exhaust. However, as described above, since the humidity sensor and the gas concentration sensor cannot be used because of dew condensation, the evacuation time has a margin in consideration of various situations in the longest evacuation time in the cooking menu that uses the most amount of steam. Therefore, there is a problem that it takes a long time to exhaust before the cooking.
JP 2002-272604 A JP 57-182993 A Japanese Unexamined Patent Publication No. 57-202020 JP-A-6-45061

  Accordingly, an object of the present invention is to provide a heating cooker that can reliably and quickly exhaust steam in a heating chamber prior to the next heating cooking even when a humidity sensor and a gas concentration sensor are not used.

In order to solve the above problems, the heating cooker of the present invention is:
A steam generator for generating steam;
A heating chamber for heating an object to be heated by steam from the steam generator;
Exhaust means for exhausting the gas in the heating chamber to the outside;
An exhaust control means for controlling at least the exhaust means so as to exhaust the gas in the heating chamber to the outside,
The exhaust control means includes
It has time measuring means for measuring the steam supply time during which steam is supplied into the heating chamber during cooking,
The exhaust means is operated to perform exhaust until the steam amount in the heating chamber becomes a steam amount at which the next cooking can be performed based on the time measurement result by the time measuring means.

  According to the above configuration, the amount of steam in the heating chamber is reduced by the exhaust control unit based on the time measurement result by the time measuring unit that measures the steam supply time during which steam is supplied from the steam generator to the heating chamber during cooking. The exhaust means is operated until the amount of steam that can be cooked is reached, and exhaust is performed. Therefore, the exhaust operation can be stopped when the amount of steam in the heating chamber reaches the amount of steam capable of executing the next cooking, and the next cooking can be performed without using the humidity sensor and the gas concentration sensor. Prior to this, the steam in the heating chamber can be reliably exhausted. Further, since the exhaust operation is stopped based on the time measurement result by the above time measuring means, it is quicker than the case where the longest exhaust time is exhausted for a set time by adding a margin in consideration of various situations. Can be exhausted.

Moreover, in the heating cooker of one embodiment,
The timing means is a counter,
The exhaust control means starts counting down from the count value by the counter in association with the start of the exhaust operation, and performs exhaust by the exhaust means until the count value reaches a predetermined value.

  According to this embodiment, while the steam is being supplied from the steam generation device, the count value is counted up by the counter, and the count value is counted down in relation to the start of the exhaust operation. Since the exhaust operation is performed until a predetermined value is reached, the steam in the heating chamber can be reliably exhausted prior to the next cooking without using a humidity sensor and a gas concentration sensor.

Moreover, in the heating cooker of one embodiment,
A door for opening and closing the heating chamber is provided, and the countdown speed is changed in relation to the open / closed state of the door.

  When the door for opening and closing the heating chamber is open, more steam is discharged from the heating chamber than in the case of exhaust by only the exhaust means. According to this embodiment, the countdown speed is changed in relation to the open / closed state of the door. Therefore, the countdown speed when the door is open can be made faster than the countdown speed when the door is closed, and the exhaust period by the exhaust means can be shortened.

Moreover, in the heating cooker of one embodiment,
The timing means is a timer,
The exhaust control means starts counting down from the timer value counted by the timer in association with the start of the exhaust operation, and performs exhaust by the exhaust means until the timer value reaches a predetermined value.

  According to this embodiment, while the steam is being supplied from the steam generator, the timer value is counted from the timer value measured by the timer, and the timer value starts counting down in relation to the start of the exhaust operation. Since the exhausting operation is performed until the value reaches a predetermined value, the steam in the heating chamber can be reliably exhausted prior to the next cooking without using a humidity sensor and a gas concentration sensor.

Moreover, in the heating cooker of one embodiment,
A door for opening and closing the heating chamber is provided, and the predetermined value is increased in relation to the open / closed state of the door.

  When the door for opening and closing the heating chamber is open, more steam is discharged from the heating chamber than in the case of exhaust by only the exhaust means. According to this embodiment, the predetermined value is increased in association with the open / closed state of the door. Therefore, the predetermined value when the door is opened can be increased more than the predetermined value when the door is closed, and the timer value can reach the predetermined value earlier. As a result, the exhaust period by the exhaust means can be shortened.

Moreover, the heating cooker of this invention is
A steam generator for generating steam;
A heating chamber for heating an object to be heated by steam from the steam generator;
An exhaust passage for exhausting the gas in the heating chamber to the outside;
A suction means interposed in the exhaust passage, for sucking the gas in the heating chamber and exhausting it to the outside;
Opening degree adjusting means for adjusting the opening degree of the exhaust passage;
An exhaust control means for controlling at least the suction means and the opening degree adjusting means so as to exhaust the gas in the heating chamber to the outside,
The exhaust control means includes
During cooking, it has time measuring means for measuring the steam supply time from when steam is supplied from the steam generator until the heating chamber is filled with steam,
Based on the time measured by the time measuring means, the suction is performed until the exhaust time from when the opening degree adjusting means is opened until the amount of steam in the heating chamber reaches the amount of steam capable of performing the next cooking is passed. And the opening adjusting means are caused to perform an exhaust operation.

  According to the above configuration, during cooking, the exhaust control unit opens the steam based on the time measured by the time measuring unit that measures the steam supply time from when the steam is supplied from the steam generator until the heating chamber is filled with steam. The exhaust operation is performed until the exhaust time from when the degree adjusting means is opened until the steam amount in the heating chamber reaches the steam amount at which the next cooking can be performed is passed. Therefore, the exhaust operation can be stopped when the amount of steam in the heating chamber reaches the amount of steam capable of performing the next cooking, and the prior to the next cooking without using the humidity sensor and the gas concentration sensor. Thus, the steam in the heating chamber can be reliably exhausted. Further, since the exhaust operation is stopped based on the time measurement result by the above time measuring means, it is quicker than the case where the longest exhaust time is exhausted for a set time by adding a margin in consideration of various situations. Can be exhausted.

Moreover, in the heating cooker of one embodiment,
The timing means is a timer,
The exhaust control means regards the time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam as an index of the amount of steam that fills the heating chamber, The suction based on the time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam, and the time measured by the timer after the opening adjusting means is opened. The means and the opening degree adjusting means are caused to perform an exhaust operation.

  According to this embodiment, the amount of steam that fills the heating chamber with the time measured by the timer (steam filling time) from when the steam is supplied from the steam generator to when the heating chamber is filled with steam. It is considered as an indicator. Therefore, it is possible to regard the time measured as 1 / n (n: positive integer) of the steam filling time as 1 / n of the steam amount that fills the heating chamber. As a result, the remaining steam amount in the heating chamber can be obtained based on the steam filling time and the time measured by the timer (that is, the exhaust time) after the opening degree adjusting means is opened. Therefore, by performing the exhaust operation according to the exhaust time, the steam in the heating chamber can be reliably exhausted prior to the next cooking without using a humidity sensor and a gas concentration sensor.

Moreover, in the heating cooker of one embodiment,
The timing means is a counter,
The exhaust control means regards the count value by the counter from when steam is supplied from the steam generator until the heating chamber is filled with steam as an index of the amount of steam that fills the heating chamber, The suction based on the count value by the counter from when steam is supplied from the steam generator until the heating chamber is filled with steam, and the count value by the counter after the opening degree adjusting means is opened. The means and the opening degree adjusting means are caused to perform an exhaust operation.

  According to this embodiment, the amount of steam that fills the heating chamber with the count value (steam filling count value) by the counter from when the steam is supplied from the steam generator until the heating chamber is filled with steam. Is considered to be an indicator of Therefore, the count value of 1 / n (n: positive integer) of the steam filling count value can be regarded as the steam amount of 1 / n of the steam amount that fills the heating chamber. As a result, it is possible to obtain the steam remaining amount in the heating chamber based on the steam filling count value and the count value (exhaust count value) by the counter by the timer after opening the opening degree adjusting means. become. Therefore, by performing the exhaust operation according to the exhaust count value, it is possible to reliably exhaust the steam in the heating chamber prior to the next cooking without using a humidity sensor and a gas concentration sensor.

Moreover, in the heating cooker of one embodiment,
The exhaust control means includes
Based on the first count value by the counter from when the steam is supplied from the steam generator until the heating chamber is filled with steam, the amount of steam in the heating chamber after the steam is supplied from the steam generator Set the second count value of the counter until the amount of steam that can perform the next cooking is reached,
During the exhaust operation, the count value of the counter is counted down from the first count value,
When the count value of the counter reaches the second count value, the suction means and the opening degree adjusting means stop the exhaust operation.

  According to this embodiment, the second count value of the counter is set from when the steam is supplied from the steam generator until the steam amount in the heating chamber becomes a steam amount at which the next cooking can be performed, During the exhaust operation, the count value of the counter is counted down from the first count value, and when the second count value is reached, the exhaust operation is stopped. Therefore, using the first count value from when the steam is supplied from the steam generator until the heating chamber is filled with steam, the steam amount in the heating chamber becomes a steam amount at which the next cooking can be performed. It can be exhausted until.

Moreover, in the heating cooker of one embodiment,
The first count value is a maximum value in the counter.

  According to this embodiment, when the heating chamber is filled with steam, the count value of the counter becomes the maximum value. Therefore, even if steam is subsequently supplied to the heating chamber, the counter generates steam from the steam generator. A count value from when the heating chamber is supplied to when the heating chamber is filled with steam can be maintained. Therefore, when the exhaust operation is started, the counter may start counting down as it is.

Moreover, in the heating cooker of one embodiment,
A door for opening and closing the heating chamber is provided, and the countdown speed is changed in relation to the open / closed state of the door.

  When the door for opening and closing the heating chamber is open, more steam is discharged from the heating chamber than in the case of exhaust using only the suction means and the opening degree adjusting means. According to this embodiment, the countdown speed is changed in relation to the open / closed state of the door. Therefore, the speed of the countdown when the door is opened can be made faster than the speed of the countdown when the door is closed, and the exhaust period by the suction means and the opening degree adjusting means is shortened. can do.

Moreover, in the heating cooker of one embodiment,
In addition to the counter, the timer has a timer.
The exhaust control means includes
The time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam is considered to be an indicator of the amount of steam that fills the heating chamber,
In addition to the count value by the counter from when the steam is supplied from the steam generator until the heating chamber is filled with steam, and the count value by the counter after the opening degree adjusting means is opened, The suction based on the time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam, and the time measured by the timer after the opening adjusting means is opened. The means and the opening degree adjusting means are caused to perform an exhaust operation.

  According to this embodiment, the count value by the counter and the time measured by the timer from when the steam is supplied from the steam generator until the heating chamber is filled with steam, and the opening degree adjusting means are opened. Since the exhaust operation is performed based on the count value obtained by the counter and the time measured by the timer, the exhaust operation can be normally executed even if a malfunction occurs in the counter or the timer. Therefore, reliability can be improved.

Moreover, in the heating cooker of one embodiment,
A humidity sensor for detecting the humidity in the heating chamber;
The exhaust control means includes
Before the amount of steam in the heating chamber reaches the amount of steam capable of performing the next cooking, and until the exhaust time until the humidity in the heating chamber reaches a humidity at which the humidity sensor can operate, Based on the time measured by the time measuring means, the suction means and the opening degree adjusting means perform an exhaust operation,
After the exhaust time until the humidity in the heating chamber becomes a humidity at which the humidity sensor can operate, the humidity in the heating chamber can execute the next cooking based on the detection result of the humidity sensor. The suction means and the opening degree adjusting means are caused to perform an exhaust operation until humidity is reached.

  According to this embodiment, after the humidity in the heating chamber reaches a humidity at which the humidity sensor can operate, the exhaust operation is performed based on the detection result of the humidity sensor. It is possible to accurately control the humidity so that cooking can be performed.

Moreover, in the heating cooker of one embodiment,
Display means;
Display control means for switching and controlling the display content of the display means,
When the exhaust control unit or the suction unit and the opening degree adjusting unit perform the exhaust operation, the exhaust control unit causes the display control unit to display that at least a part of the display unit is exhausting. .

  According to this embodiment, when performing the exhaust operation, it is displayed that at least a part of the display means is exhausting. Therefore, the user can know that the exhaust is currently being performed by looking at the display means, and can start the next cooking menu or not open the door regardless of the end of cooking. .

Moreover, in the heating cooker of one embodiment,
Display means for displaying selectable cooking menus;
A selection determining means for selecting and determining a desired cooking name from the cooking menu displayed on the display means;
Display control means for switching and controlling the display content of the display means,
When the cooking name using steam is selected and determined by the selection determining means, the display control means displays that the heating chamber is highly humid on at least a part of the display means. .

  According to this embodiment, during heating cooking using steam, at least a part of the display means displays that the heating chamber is highly humid. When cooking using microwaves as a cooking menu, it can be implied that attention should be paid to the cooking start time.

Moreover, in the heating cooker of one embodiment,
A display means for displaying a selectable cooking menu;
Of the cooking names displayed on the display means, the cooking name display form using microwaves is different from the other cooking name display forms.

  According to this embodiment, the user can notice that the cooking using microwaves requires attention to the cooking start time by looking at the display means.

Moreover, in the heating cooker of one embodiment,
A door that opens and closes the heating chamber; a second counter different from the counter that counts the steam supply time during which steam is supplied into the heating chamber during cooking;
Display means for displaying selectable cooking menus;
Display control means for switching and controlling the display content of the display means,
The second counter counts down from the count value of the second counter only while the door is opened,
The display control means changes the display form of the cooking name using the microwave displayed on the display means until at least one of the counter and the second counter reaches the predetermined value. Is different from the display form.

  According to this embodiment, the user can notice that the cooking using microwaves requires attention to the cooking start time by looking at the display means.

  As is clear from the above, the cooking device of the present invention is configured by the exhaust control means based on the time measurement result of the time measuring means for measuring the steam supply time during which steam is supplied from the steam generator into the heating chamber during cooking. Since the exhaust means is operated to exhaust until the amount of steam in the heating chamber reaches the amount of steam that can perform the next cooking, the amount of steam in the heating chamber that can perform the next heating and cooking The exhaust operation can be stopped at the time of reaching, and the steam in the heating chamber can be reliably exhausted prior to the next cooking without using the humidity sensor and the gas concentration sensor. Further, since the exhaust operation is stopped based on the time measurement result by the above time measuring means, it is quicker than the case where the longest exhaust time is exhausted for a set time by adding a margin in consideration of various situations. Can be exhausted.

  In addition, the cooking device of the present invention controls the exhaust based on the timing result by the timing means for timing the steam supply time from when the steam is supplied from the steam generator to when the heating chamber is filled with steam during cooking. Until the exhaust time from when the opening degree adjusting means is opened until the steam amount in the heating chamber reaches a steam amount at which the next cooking can be performed elapses, is exhausted to the suction means and the opening degree adjusting means. Since the operation is performed, the exhaust operation can be stopped when the amount of steam in the heating chamber reaches the amount of steam capable of performing the next cooking, and the next operation can be performed without using the humidity sensor and the gas concentration sensor. Prior to the cooking, the steam in the heating chamber can be reliably exhausted. Further, since the exhaust operation is stopped based on the time measurement result by the above time measuring means, it is quicker than the case where the longest exhaust time is exhausted for a set time by adding a margin in consideration of various situations. Can be exhausted.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is an external perspective view of the heating cooker according to the present embodiment. The heating cooker 1 is provided with an operation panel 11 at the upper part of the front surface of the rectangular parallelepiped cabinet 10, and a door 12 that rotates around the lower end side is provided below the operation panel 11 on the front surface of the cabinet 10. It is provided and roughly configured. A handle 13 is provided at the top of the door 12, and a heat-resistant glass window 14 is fitted into the door 12.

  FIG. 2 is an external perspective view of the heating cooker 1 with the door 12 opened. A rectangular parallelepiped heating chamber 20 is provided in the cabinet 10. The heating chamber 20 has an opening 20a on the front side facing the door 12, and the side surface, bottom surface and top surface of the heating chamber 20 are formed of stainless steel plates. The door 12 is formed of a stainless steel plate on the side facing the heating chamber 20. A heat insulating material (not shown) is placed around the heating chamber 20 and inside the door 12 to insulate the inside of the heating chamber 20 from the outside.

  Further, a stainless steel tray 21 is installed on the bottom surface of the heating chamber 20, and a stainless steel wire rack (not shown) for placing an object to be heated is installed on the tray 21. . Furthermore, a substantially rectangular side surface steam outlet 22 (only one of which is visible in FIG. 2) is provided at the lower part of both side surfaces of the heating chamber 20.

  FIG. 3 is a schematic configuration diagram showing a basic configuration of the heating cooker 1. As shown in FIG. 3, the heating cooker 1 includes a heating chamber 20, a water tank 30 that stores steam water, and a steam generator 40 that generates steam by evaporating water supplied from the water tank 30. And a steam heating chamber 50 for heating the steam from the steam generator 40, and a control device 80 for controlling operations of the steam generator 40, the steam heating chamber 50, and the like.

  Further, the water tank 30 and the steam generator 40 are connected by a water supply pipe 33 provided with a pump 35, and the steam generator 40 is provided with a steam generator heater 42. Further, the one end of the external circulation path 60 in which the blower fan 28 as the suction means is provided on one end side is connected to the outside of the suction port 25 provided in the upper part of the side surface of the heating chamber 20. The other end of 60 is connected to the steam heating chamber 50. A steam supply port 62 is provided between the suction port 25 and the blower fan 28 in the external circulation path 60, and one end of a steam supply pipe 63 that supplies steam from the steam generator 40 is provided in the steam supply port 62. The other end of the steam supply pipe 63 is connected to a steam outlet 41 provided on the top plate of the steam generator 40.

  One end of a discharge passage 64 is connected to the discharge port 27 provided below the side surface of the heating chamber 20, and one end of a first exhaust duct 65 is connected to the other end of the discharge passage 64. Further, a first exhaust port 66 is provided at the other end of the first exhaust duct 65. In addition, one end side of a second exhaust duct 69 is connected to the external circulation path 60 via an exhaust path 67. Further, a second exhaust port 70 is provided at the other end of the second exhaust duct 69. Further, a damper 68 serving as the opening degree adjusting means for adjusting the opening degree of the exhaust passage 67 is disposed on the exhaust passage 67 on the connection side with the external circulation path 60.

  In the present embodiment, the damper 68 that opens and closes the exhaust passage 67 and switches between two states of fully closed and fully open is used. However, a damper that can adjust the opening degree of the exhaust passage 67 may be used. Further, a “valve” may be used instead of the damper 68. As the “valve” in this case, a valve whose opening degree can be adjusted in multiple stages may be used, or a valve that switches between two states of fully closed and fully open may be used. When a damper or a valve that can adjust the opening degree of the exhaust passage 67 in multiple stages is used, the exhaust flow rate flowing through the exhaust passage 67 can be adjusted in multiple stages.

  That is, in the present embodiment, the exhaust passage is constituted by the suction port 25, the external circulation passage 60, the exhaust passage 67 and the second exhaust duct 69. The exhaust means is constituted by the exhaust passage, the blower fan 28, and the damper 68. Here, the blower fan 28 has both a function as a circulation fan for circulating the gas in the heating chamber 20 and a function as the exhaust means. However, a separate fan for exhaust may be provided.

  The steam heating chamber 50 includes a dish-shaped case 51 disposed on the ceiling side of the heating chamber 20 and substantially in the center with the opening facing downward, and the steam heating disposed in the dish-shaped case 51. And a heater 52. The bottom surface of the dish-shaped case 51 is formed by a metal ceiling panel 54 provided on the ceiling surface of the heating chamber 20. A plurality of ceiling steam outlets 55 are formed in the ceiling panel 54.

  Further, the steam heating chamber 50 is connected to the upper portion of the heating chamber 20 at one end of a steam supply passage 23 extending toward the left and right sides in FIG. The steam supply passage 23 extends downward along both side surfaces of the heating chamber 20, and is connected to a side surface steam outlet 22 provided on the lower side of both side surfaces of the heating chamber 20 at the other end. Has been.

  A magnetron 71 is disposed below the heating chamber 20. Then, the microwave generated in the magnetron 71 is guided to the lower center of the heating chamber 20 by the waveguide 72 and is radiated upward in the heating chamber 20 while being rotated by the rotating antenna 73 to heat the object to be heated. It is supposed to be.

  Next, the control system of the heating cooker 1 will be described.

  The control device 80 includes a microcomputer, an input / output circuit, and the like. As shown in FIG. 4, the blower fan 28, the steam heating heater 52, the steam generating heater 42, the operation panel 11, the pump 35, and a damper are provided. 68, a magnetron 71, and various valves, a water level sensor, a temperature sensor, and a humidity sensor (all not shown) are connected. Based on detection signals from the water level sensor, temperature sensor, and humidity sensor, the blower fan 28, the steam heater 52, the damper 68, the valve, the steam generation heater 42, the operation panel 11, the pump 35, and the magnetron 71 are predetermined. Control according to the cooking program.

  Further, the control device 80 has an exhaust counter (not shown) as the time measuring means for measuring the exhaust time when the steam in the heating chamber 20 is exhausted. This exhaust counter counts the steam supply time by integrating the time during which steam is supplied into the heating chamber 20, and subtracts it from the integrated value when exhausting the steam in the heating chamber 20. The exhaust time is measured.

  In this embodiment, a counter is used as the time measuring means. In this case, there is an advantage that the count speed can be adjusted. Specifically, by changing the count unit, the count speed can be adjusted by increasing or decreasing the count. For example, if the count unit is changed from “2” to “3”, the count speed can be increased. On the other hand, if the value is changed from “2” to “1”, the count speed can be reduced. Furthermore, the count speed can be adjusted even if the counting timing is accelerated or delayed. For example, if the count timing is changed from “every 2 seconds” to “every 3 seconds”, the count speed can be reduced. On the other hand, the count speed can be increased by changing from "every 2 seconds" to "every 1 second".

  In addition to the counter, a timer can be used as the time measuring means. The “timer” here refers to a timer that measures the actual time. For example, if it is 40 seconds, the “time of 40 seconds” itself is measured. It is distinguished from the counter.

  FIG. 5 schematically shows the operation panel 11. In FIG. 5, 81 is a display part comprised, for example with a liquid crystal display panel. The display unit 81 is provided with an exhaust display area 82 and a menu display area 83. Here, the exhaust display area 82 is an area that is lit when the steam in the heating chamber 20 is exhausted and displays that exhaust is being performed. The menu display area 83 is an area where menu names that can be selected when the cooking menu is selected are displayed. In that case, the names of the steam cooking menu using superheated steam and the microwave oven menu using microwaves are displayed in different display forms. In FIG. 5, the name of the steam cooking menu is represented by an ellipse, and the name of the microwave oven menu is represented by a triangle.

  A cylindrical menu selection dial 84 and a columnar menu determination button 85 fitted in the hole of the menu selection dial 84 are arranged beside the display unit 81. For example, when the menu selection dial 84 is turned to the right, the menu selection cursor 86 displayed in the menu display area 83 is moved downward, and when it is turned to the left, the menu selection cursor 86 is moved upward. ing. Then, the user operates the outer menu selection dial 84 to position the menu selection cursor 86 at the position of the desired cooking menu (that is, selects the desired cooking menu), and presses the inner menu determination button 85. When pressed, the cooking menu is determined, and a code representing the determined cooking menu is set in a register or the like of the control device 80.

  The configuration of the menu selection dial 84 and the menu determination button 85 is not limited to the above configuration. The menu selection dial 84 and the menu determination button 85 may be separately disposed and may be configured by a single dial that can be rotated and pressed.

  Hereinafter, the steam heating operation of the heating cooker 1 having the above configuration will be described with reference to FIGS. 3 and 4. When the operation panel 11 is operated by the user and a start key (not shown) is pressed after the menu is determined, the cooking operation is started. Then, first, the control device 80 starts the operation of the pump 35. Then, water is supplied from the water tank 30 into the steam generator 40 via the water supply pipe 33 by the pump 35. Thereafter, when the water level in the steam generator 40 reaches a predetermined water level, the pump 35 is stopped to stop water supply.

  After that, the blower fan 28 and the damper 68 are controlled according to the count value of the exhaust counter, and the exhaust operation in the heating chamber 20 is performed as will be described in detail later. Thus, before starting the cooking, the steam in the heating chamber 20 is exhausted, so that the temperature or humidity in the heating chamber 20 is lower than the initial temperature or lower than the initial humidity determined by the cooking program. is there.

  Next, the steam generating heater 42 is energized, and a predetermined amount of water accumulated in the steam generating apparatus 40 is heated by the steam generating heater 42. Thus, when the water in the steam generator 40 boils, saturated steam is generated. When the steam generating heater 42 is energized or when the temperature of the water in the steam generating apparatus 40 reaches a predetermined temperature, the blower fan 28 is turned on and the steam heater 52 in the steam heating chamber 50 is energized. Then, the blower fan 28 sucks the gas (including steam) in the heating chamber 20 from the suction port 25 and sucks saturated steam generated in the steam generation device 40 from the steam supply port 62 to enter the external circulation path 60. It sends out gas (including steam). Thus, the steam from the heating chamber 20 and the steam from the steam generator 40 sent out by the blower fan 28 flow into the steam heating chamber 50 through the external circulation path 60 at a high speed.

  The steam that has flowed into the steam heating chamber 50 is heated by the steam heater 52 and becomes superheated steam at approximately 300 ° C. (depending on the cooking content). A part of this superheated steam is ejected downward from the plurality of ceiling steam outlets 55 provided in the lower ceiling panel 54 in the heating chamber 20. Further, another part of the superheated steam is ejected from the side surface steam outlets 22 on both side surfaces of the heating chamber 20 through the steam supply passages 23 provided on the left and right sides of the steam heating chamber 50.

  Thus, the superheated steam ejected from the ceiling side of the heating chamber 20 is vigorously supplied toward the heated object side in the center, and the superheated steam ejected from the left and right side surfaces of the heating chamber 20 collides with the receiving tray 21. Then, it is supplied while being lifted so as to wrap the object to be heated from below the object to be heated. As a result, in the heating chamber 20, convection occurs in such a manner that it blows down at the center and rises outside thereof.

  Thus, by forming the convection of the superheated steam in the heating chamber 20, the superheated steam from the steam heating chamber 50 is sent to the ceiling steam outlet 55 while maintaining the temperature / humidity distribution in the heating chamber 20 uniform. And the side surface steam outlet 22 and can efficiently collide with the object to be heated placed on the rack, and the object to be heated is heated by the collision of the superheated steam.

  Further, when time elapses during the cooking operation, the amount of steam in the heating chamber 20 increases, and the surplus amount of steam is discharged from the discharge port 27 to the discharge passage 64 and the first exhaust duct. The air is exhausted from the first exhaust port 66 through 65. The water condensed in the discharge passage 64 flows down in the discharge passage 64 and is guided to the receiving tray 21, and is processed together with the water generated by cooking after the cooking.

  Thus, when a predetermined time before the end of cooking (“1 minute before” in the present embodiment) is reached, the damper 68 of the external circulation path 60 is opened. Then, the external circulation path 60 communicates with the second exhaust duct 69, and the steam in the heating chamber 20 is blown by the blower fan 28 via the suction port 25, the external circulation path 60, the exhaust path 67 and the second exhaust duct 69. And is discharged from the second exhaust port 70. By doing so, the steam in the heating chamber 20 at the end of cooking is reduced, and the time until the start of the next cooking can be shortened.

  Further, the above-described damper operation functions in the same manner when the user opens the door 12 during cooking. That is, when the user opens the door 12, the control device 80 detects that the door 12 has been opened by a sensor (not shown), and instantly opens the damper 68 of the external circulation path 60. Therefore, it is possible to prevent the user from being exposed to steam.

  After cooking, the control device 80 displays a cooking end message on the operation panel 11, and a buzzer (not shown) provided on the operation panel 11 sounds a signal.

  Even when a user who knows the end of cooking by these messages and buzzer opens the door 12, the damper 68 and the blower fan 28 may be controlled to perform the exhaust operation. In that case, the user can take out the object to be heated from the heating chamber 20 more safely without being exposed to steam.

  Hereinafter, the steam exhaust processing operation which is a feature of the present invention will be described in detail.

  FIG. 6 is a flowchart of a main routine executed under the control of the control device 80. Here, in this main routine, the water supply processing operation to the steam generator 40 is deleted, and only items relating to the steam exhaust processing operation are described. Moreover, the microcomputer which comprises the control apparatus 80 contains 1st CPU (central processing unit) which performs the said main routine, and 2nd CPU which performs the said heating cooking, exchanging information with the said 1st CPU. Yes. When the power is turned on, the main routine by the first CPU starts.

  Further, although not shown in the drawing, as described above, when the cooking menu is selected and determined by the user and the start key is pressed, the cooking operation by the second CPU is started. And in the state supplied with the water in the steam generator 40, it waits for the instruction | indication of the cooking start from said 1st CPU.

  Hereinafter, the main routine will be described. In step S1, a steam exhaust routine which is a subroutine is executed. The steam exhaust routine will be described in detail later. In step S2, it is determined whether or not the count value of the exhaust counter is "0". As a result, if “0”, the process proceeds to step S3, and if not, the process returns to step S1 and the steam exhaust routine is continued. In step S3, the damper 68 is closed. In step S4, the exhaust display area 82 in the display unit 81 of the operation panel 11 is turned off. In step S5, for example, it is determined whether or not the cooking menu is set by determining whether or not the cooking menu code is set in the register of the control device 80. As a result, if it is set, the process proceeds to step S6. If not, the process returns to step S1 and the steam exhaust routine is continued.

  In step S6, for example, the second CPU for cooking is instructed to start cooking on the cooking menu set in the register of the control device 80, and heating cooking on the object to be heated is started. Then, on the second CPU side, the blower fan 28, the steam heater 52, the damper 68, the valve, the steam generating heater 42, the operation panel as described above according to the cooking program read based on the code of the cooking menu. 11, The pump 35, the magnetron 71, etc. are controlled, and the cooking for the object to be heated is performed in parallel with the main routine.

  In step S7, a steam exhaust routine which is the above subroutine is executed. In step S8, based on the information from the second CPU, it is determined whether or not the scheduled cooking time based on the cooking program being executed has elapsed. As a result, if it has elapsed, the process proceeds to step S9. If not, the process returns to step S7 and the steam exhaust routine is continued. In step S9, for example, a cooking end operation such as erasing the cooking menu code set in the register of the control device 80 is executed. After that, the process returns to step S1.

  Next, the steam exhaust routine executed in steps S1 and S7 of the main routine will be described in detail. 7 and 8 are flowcharts of the steam exhaust routine.

  When the main routine starts, or when the start of cooking on the cooking menu is instructed in step S6 of the main routine, the steam exhaust routine starts.

  In step S21, it is determined whether cooking is in progress. As a result, if cooking is in progress, the process proceeds to step S23; otherwise, the process proceeds to step S22. In step S22, it is determined whether or not the count value of the exhaust counter is “0”. As a result, if “0”, the process proceeds to step S23; otherwise, the process proceeds to step S29. In step S23, for example, the cooking menu code set in the register of the control device 80 is referred to, and it is determined whether or not the cooking menu set is a steam cooking menu. As a result, if it is a steam cooking menu, the process proceeds to step S24. Otherwise, the process returns to step S2 or step S8 of the main routine.

  As a result, when the cooking menu is not selected or determined by the user and the count value of the exhaust counter is “0”, and when cooking is being performed by a cooking menu that is not a steam cooking menu, the steam is In the exhaust routine, nothing is performed and the process returns to the main routine. If the cooking menu is not selected / decided and the count value of the exhaust counter is “0” and the process returns to the main routine, the damper 68 is forcibly used in steps S3 and S4 in the main routine. Is closed and the exhaust display area 82 is turned off.

  In step S24, it is determined whether or not the steam generating heater 42 of the steam generating apparatus 40 is “ON”. As a result, if “ON”, the process proceeds to step S25, and if not, the process proceeds to step S28. In step S25, it is determined whether or not the count value of the exhaust counter is the “maximum value”. As a result, if it is “maximum value”, the process proceeds to step S28, and if not, the process proceeds to step S26. In step S26, for example, based on the information from the second CPU, it is determined whether or not it is a predetermined time before the end of cooking. As a result, if it is a predetermined time before the end of cooking, the process proceeds to step S28, and if not, the process proceeds to step S27. In step S27, the exhaust counter is incremented by "1". In step S28, for example, based on information from the second CPU, it is determined whether or not it is a predetermined time before the end of cooking. As a result, if it is a predetermined time before the end of cooking, the process proceeds to step S29, otherwise, the process returns to step S2 or step S8 of the main routine.

  As a result, if the steam generation heater 42 is “off” or the count value of the exhaust counter is “maximum value” during the cooking by the steam cooking menu, the predetermined time before the end of cooking is not reached. In the steam exhaust routine, nothing is performed and the process returns to the main routine. In addition, if the steam generation heater 42 is “ON” and the count value of the exhaust counter is less than the “maximum value” during cooking by the steam cooking menu, the exhaust counter is not reached. The count value of the exhaust counter is added until the count value reaches the “maximum value” or until a predetermined time before the end of cooking, and the steam supply amount (steam supply time) to the heating chamber 20 is measured. Become.

  In step S29, the damper 68 is opened and the exhaust of the heating chamber 20 is started. In step S30, the exhaust display area 82 in the display unit 81 of the operation panel 11 is turned on. In step S31, the exhaust counter is decremented by "1". In step S32, it is determined whether or not the count value of the exhaust counter is "0". As a result, if “0”, the process proceeds to step S33, and if not, the process returns to step S2 or step S8 of the main routine.

  As a result, when the cooking counter is not being cooked and the count value of the exhaust counter is not "0", and when the predetermined time before the end of cooking is reached during cooking by the steam cooking menu, the count value of the exhaust counter is The exhaust of the heating chamber 20 and the decrement of the count value are performed until “0”, and the exhaust based on the remaining steam (steam exhaust time) of the heating chamber 20 is performed.

  In step S33, the damper 68 is closed. In step S34, the exhaust display area 82 in the display unit 81 of the operation panel 11 is turned off. After that, the process returns to step S2 or step S8 of the main routine.

  As a result, when the exhaust gas is exhausted up to a predetermined time before the end of cooking during cooking by the steam cooking menu, the damper 68 is closed when the count value of the exhaust counter becomes “0”. The exhaust display area 82 in the display unit 81 is turned off.

  As described above, in the above-described embodiment, as can be seen from the main routine and the steam exhaust routine, when cooking on the steam cooking menu, the damper 68 is closed and the inside of the heating chamber 20 is sealed. . Therefore, it can be considered that the amount of steam in the heating chamber 20 is almost directly proportional to the time from when the blower fan 28 is turned on until the heating chamber 20 is filled with superheated steam. Then, the count value of the exhaust counter is added until the count value of the exhaust counter reaches the “maximum value” after the blower fan 28 is turned “on”. Therefore, if the timing of the addition is set so that the count value of the exhaust counter becomes the “maximum value” in the time from when the blower fan 28 is turned on until the inside of the heating chamber 20 is filled with superheated steam, Using the “maximum value” as an indicator of the amount of steam that fills the heating chamber 20, the amount of steam input into the heating chamber 20 can be expressed by the count value of the exhaust counter.

  Therefore, at the time of exhaust processing, the remaining amount of steam in the heating chamber 20 can be represented by the count value of the exhaust counter by decrementing the count value counted during cooking by the steam cooking menu.

  That is, during cooking using the steam cooking menu, when exhausting is performed a predetermined time before the end of cooking, the remaining steam amount in the heating chamber 20 is detected based on the count value of the exhaust counter, and exhaust is performed based on the detection result. The operation can be stopped. Therefore, according to the present embodiment, the steam in the heating chamber can be reliably exhausted prior to the next cooking without using the humidity sensor and the gas concentration sensor. Further, since the exhaust operation is stopped based on the detection result of the remaining amount of steam in the heating chamber 20, regardless of the cooking menu, the longest exhaust time is set for a certain time set by adding a margin in consideration of various situations. Compared to the case of exhaust, exhaust can be performed quickly.

  By the way, the “time until the inside of the heating chamber 20 is filled with superheated steam” differs depending on the cooking menu. For example, in the case of “steamed food”, the filling time is short and the exhaust time is long. Therefore, the timing of addition in the exhaust counter is set in advance for each cooking program, and is automatically set when each cooking program is executed.

  In the above embodiment, at the time of exhaust, until the count value of the exhaust counter becomes “0” which is a predetermined value (sometimes referred to as a counter predetermined value), that is, the steam in the heating chamber 20 is almost eliminated. It is trying to exhaust to. However, it is also possible to exhaust the gas until “the steam in the heating chamber 20 reaches a predetermined steam amount after the damper 68 is opened”. In that case, based on “the count value of the exhaust counter from when the blower fan 28 is turned on until the inside of the heating chamber 20 is filled with superheated steam”, “inside of the heating chamber 20 after the blower fan 28 is turned on” The exhaust counter count value “A” until the steam reaches a predetermined steam amount is obtained in advance, and “exhaust counter = 0” in step S2 of the main routine and steps S22 and S32 of the steam exhaust routine is determined as “exhaust gas”. "Counter = A?" In this case, “A” is a predetermined counter value.

  Here, the “predetermined amount of steam” refers to the amount of steam at which the humidity in the heating chamber 20 exhibits the humidity at which cooking by the magnetron is possible, or the temperature at the start of cooking defined in each cooking program. It is the amount of steam to be exhibited.

  In the above embodiment, when the exhaust of the heating chamber 20 is started, the exhaust display area 82 in the display unit 81 of the operation panel 11 is turned on. Therefore, the user can know that the exhaust is currently being performed by looking at the display unit 81, and the user can open the door 12 in spite of the exhaust, or determine the next cooking menu and perform cooking by heating. You can avoid starting.

  Moreover, in the said embodiment, the steam cooking menu and microwave oven menu which are displayed on the said menu display area 83 are displayed with a different display form. Therefore, the user can recognize that at least the microwave oven menu needs attention to the cooking start time more than the other cooking menus when selecting the menu by looking at the menu display area 83.

  In the above embodiment, the exhaust counter is provided, and the exhaust operation is performed based on the count value of the exhaust counter. However, the present invention is not limited to this, and the control device 80 has time measuring means such as a timer, and the process from when the blower fan 28 is turned on until the inside of the heating chamber 20 is filled with superheated steam. It is also possible to perform the exhaust operation based on the time and the elapsed time from when the damper 68 is opened until the steam in the heating chamber 20 reaches the predetermined steam amount. In this case, “elapsed time from when the damper 68 is opened until the inside of the heating chamber 20 reaches the predetermined steam amount (sometimes referred to as a first timer predetermined value)” = “the blower fan 28 is turned on. The elapsed time until the inside of the heating chamber 20 is filled with superheated steam ”−“ the elapsed time from when the blower fan 28 is turned on until the inside of the heating chamber 20 reaches the predetermined steam amount ”may be used. Alternatively, from the timer value measured by the timer while steam is being supplied from the steam generator 40, the timer value starts counting down (decrease of the timer value) in association with the start of the exhaust operation, and Until the timer value reaches a predetermined value (the elapsed time from when the supply of steam into the heating chamber 20 is started until the heating chamber 20 reaches the predetermined amount of steam: sometimes referred to as a second timer predetermined value) An exhaust operation may be performed.

  Alternatively, the exhaust operation may be performed based on both the count value of the exhaust counter and the elapsed time by the timer. In that case, even if a malfunction occurs in either the exhaust counter or the timer, the exhaust operation can be normally executed by the person who does not have the malfunction.

  Further, in the above-described embodiment, the timing of addition of the exhaust counter is changed / set according to “the time from when the blower fan 28 is turned on until the inside of the heating chamber 20 is filled with superheated steam”. I am doing so. However, the present invention is not limited to this, and the number of increments of the exhaust counter may be changed and set.

  In the above embodiment, when exhaust of the heating chamber 20 is started, the exhaust display area 82 in the display unit 81 of the operation panel 11 is turned on. However, the present invention is not limited to this, and characters such as “Cooling” may be displayed on the entire display unit 81, or a voice such as “Cooling now” may be output. In addition, when the steam cooking menu is selected and started, in order to inform the user that the humidity of the heating chamber 20 is currently high and the microwave oven menu cannot be executed, a part of the display 81 is set to “high humidity”. Display may be performed. In addition, when the microwave oven menu is selected even though the microwave oven menu cannot be executed because steam remains in the heating chamber 20, an alarm can be sounded.

  In the above embodiment, the exhaust operation is performed based on the count value of the exhaust counter until the steam amount in the heating chamber 20 reaches a steam amount that can be cooked by the magnetron after the damper 68 is opened. I am doing so. However, the present invention is not limited to this, and the exhaust operation is performed using the exhaust counter until the amount of steam in the heating chamber 20 reaches the amount of steam that can use the humidity sensor. There is no problem even if an exhaust operation is performed using a sensor. In this case, the humidity in the heating chamber 20 can be controlled more accurately.

  Further, the countdown speed may be changed depending on whether the door 12 that opens and closes the opening 20a of the heating chamber 20 is opened or closed. That is, the countdown speed when the door 12 is opened is made faster than the countdown speed when the door 12 is closed. When the door 12 is opened, the steam is exhausted (released) also from the opening 20a of the heating chamber 20, so that the amount of steam exhausted per unit time is higher than when exhausting only from the exhaust means described above. The amount of steam in the heating chamber 20 reaches a predetermined steam amount or less sooner. Therefore, the exhaust time can be shortened compared with the case of exhausting only with the exhaust means. Therefore, by increasing the countdown speed as described above, the count value quickly reaches the predetermined value (counter predetermined value), and the exhaust process can be terminated quickly. Moreover, when performing the next heat cooking, the next heat cooking can be performed rapidly.

  When the countdown speed when the door 12 is closed is used as a reference, the countdown speed when the door 12 is opened is made faster than when the door 12 is closed. Good. On the other hand, when the countdown speed when the door 12 is open is used as a reference, the countdown speed when the door 12 is closed may be slower than when the door 12 is open. .

  The timer can be used instead of the counter. When the first timer predetermined value is used, the time is measured by a timer (a timer different from the timer used for obtaining the first timer predetermined value may be used), and the first timer predetermined value is measured from the start of time measurement. However, if the door 12 is opened during the timer timing, the first timer predetermined value is decreased by the first predetermined period. For example, if the first timer predetermined value is 60 seconds and the first predetermined period is 15 seconds, the exhaust operation time when the door 12 is not opened is 60 seconds. On the other hand, when the door 12 is opened during the exhaust operation, the first timer predetermined value is 45 seconds (= 60 seconds-15 seconds), and the exhaust operation time is accordingly 45 seconds. Therefore, the exhaust operation time can be shortened as compared with the case where the door 12 is not opened. Alternatively, when the door 12 is opened, the first predetermined period may be added to the timer during timing. Also in this case, since the first timer predetermined value is reached quickly, the exhaust operation time can be shortened in the same manner.

  Further, when using the second timer predetermined value, in association with the start of the exhaust operation, the timer value starts counting down from the timer value which is a measured value by the timer at the time of steam supply. The exhaust operation is performed until the second timer predetermined value is reached. At that time, when the door 12 is opened, the second timer predetermined value is increased by the second predetermined period, so that the timer value is increased. The predetermined value of 2 timers is reached early, and the period during which the exhaust means performs the exhaust operation can be shortened. For example, when the timer value is 100 seconds, the second timer predetermined value when the door 12 is not opened is 40 seconds, and the second predetermined period is 15 seconds, the door 12 is not opened. Exhaust operation is performed only for a second (= 100 seconds-40 seconds). On the other hand, when the door 12 is opened, the second timer predetermined value is increased by 15 seconds to 55 seconds. By doing so, the time during which the exhaust operation is performed becomes 45 seconds (= 100 seconds-55 seconds), and the exhaust operation time can be shortened as compared with the case where the door is not opened.

  In place of the exhaust counter, a door opening counter (second counter) that counts down only when the door 12 is opened is provided to estimate that the steam in the heating chamber 20 has reached a predetermined amount. You may make it do. Specifically, as in the case of the exhaust counter, the door opening counter adds the count value until the count value reaches the “maximum value” after the blower fan 28 is turned “on”. . Therefore, if the timing of the addition is set so that the count value of the door opening counter becomes the “maximum value” in the time from when the blower fan 28 is turned on until the inside of the heating chamber 20 is filled with superheated steam. Using the “maximum value” as an indicator of the amount of steam that fills the heating chamber 20, the amount of steam input into the heating chamber 20 can be expressed by the count value of the door opening counter.

  Here, as described above, when the door 12 is opened, the amount of steam discharged from the heating chamber 20 is larger than the amount of steam generated by the exhaust means. Therefore, the countdown speed of the door opening counter may be set faster than the countdown speed of the exhaust counter. Alternatively, the maximum value of the door opening counter may be set smaller than the maximum value of the exhaust counter, and the countdown speed may be the same as the speed of the exhaust counter. .

  Further, the door 12 is opened, the door opening counter starts counting down, and the microwave menu to the menu display area 83 is reached until the count value reaches a predetermined counter value ("0" or "A" described above). Is different from the display mode of the steam cooking menu which is another menu (hereinafter, such a state is referred to as “menu display regulation”). When the count value reaches a predetermined counter value ("0" or "A" described above), the menu display restriction is canceled, and the display mode of the microwave oven menu in the menu display area 83 is changed to the steam cooking menu. Make it the same. In addition, as the method for restricting the menu display (a method for changing the menu display form), “do not display the microwave oven menu in the menu display area 83”, “make the display concentration of the microwave oven menu lighter than the steam cooking menu” “The display density of the microwave oven menu is made lighter than that of the steam cooking menu so that the user cannot select the microwave oven menu even if it is selected”. By doing in this way, the user can notice that the microwave oven menu which is the heating cooking using a microwave needs attention at the cooking start time by looking at the display part 81.

  Even if the door 12 is not opened, the heating unit 20 may be evacuated by the evacuation means when a predetermined time before the end of cooking is reached.

  The exhaust counter and the door opening counter may be used in combination. In this case, one of the count value of the exhaust counter and the count value of the door opening counter is the counter predetermined value (a count value that is estimated to have decreased to a predetermined steam amount, and the above-described “0” or “ Until the “A”) is reached, the menu display restriction is performed. Then, when either one reaches the predetermined counter value, the menu display restriction is canceled, and the display mode of the microwave oven menu in the menu display area 83 is made the same as the steam cooking menu. For example, it is assumed that the countdown speed of the exhaust counter is constant regardless of whether the door 12 is opened or closed, and the countdown speed of the door open counter is the same as the countdown speed of the exhaust counter. In this case, by setting the maximum value of the count value of the exhaust counter to be larger than the maximum value of the count value of the door opening counter, one of the exhaust counter and the door opening counter is first. Or at the same time, the counter reaches a predetermined value. Even if the maximum value of the count value of the exhaust counter is the same as the count value of the door opening counter, and the countdown speed of the door opening counter is faster than the countdown speed of the exhaust counter, One of the exhaust counter and the door opening counter reaches the predetermined value of the counter first or simultaneously.

  Further, when the exhaust counter and the door opening counter are used in combination, the menu display regulation is restricted when both the count value of the exhaust counter and the count value of the door opening counter reach the predetermined counter value. The display mode of the microwave oven menu in the menu display area 83 may be the same as the steam cooking menu.

  In the above embodiment, a common value is provided as the counter predetermined value for the exhaust counter and the door opening counter. However, the counter predetermined value is provided individually, and the count values of both counters are the same. When the predetermined counter reaches a predetermined value, the menu display restriction may be canceled, and the display mode of the microwave oven menu in the menu display area 83 may be the same as the steam cooking menu.

  In the above embodiment, the steam generator 40 is provided outside the heating chamber 20. However, it is also possible to arrange the steam generator 40 in the heating chamber 20. In this case, the present invention can be applied to a cooking device that supplies steam to the heating chamber 20. In that case, the time from the start of cooking until the steam is generated from the steam generator 40 is measured in advance, and the time counting by the time counting means such as the exhaust counter and the door opening counter is started after the time has elapsed. do it.

  Moreover, in the said embodiment, the case of the heating cooker 1 provided with the said steam temperature rising chamber 50, and being able to heat a to-be-heated material with the superheated steam from the steam temperature rising chamber 50 is demonstrated as an example, and demonstrated. Yes. However, in the present invention, in the case of a heating cooker capable of switching between heating cooking using superheated steam and heating cooking using non-superheated steam, there is no steam heating chamber 50, and the object to be heated by non-superheated steam from the steam generator 40. Needless to say, the present invention can also be applied to the case of a heating cooker that heats.

It is an external appearance perspective view in the heating cooker of this invention. It is an external appearance perspective view of the state which opened the door of the heating cooker shown in FIG. It is a schematic block diagram of the heating cooker shown in FIG. It is a control block diagram of the heating cooker shown in FIG. It is a figure which shows the outline of the operation panel in FIG. It is a flowchart of a main routine. FIG. 7 is a flowchart of a steam exhaust routine executed in the main routine shown in FIG. 6. It is a flowchart of the steam exhaust routine following FIG.

Explanation of symbols

1 ... Heat cooker,
11 ... Control panel,
20 ... heating chamber,
22 ... Side steam outlet,
23 ... steam supply passage,
25 ... Suction port,
28 ... Blower fan,
40 ... steam generator,
42 ... steam generating heater,
50 ... Steam heating chamber,
55 ... Ceiling steam outlet,
60 ... External circuit,
64 ... discharge passage,
65 ... the first exhaust duct,
67 ... exhaust passage,
68 ... Damper,
69 ... the second exhaust duct,
71 ... Magnetron,
80: Control device.
81 ... display section,
82 ... exhaust display area,
83 ... menu display area,
84 ... Menu selection dial,
85 ... Menu decision button.

Claims (17)

A steam generator for generating steam;
A heating chamber for heating an object to be heated by steam from the steam generator;
Exhaust means for exhausting the gas in the heating chamber to the outside;
An exhaust control means for controlling at least the exhaust means so as to exhaust the gas in the heating chamber to the outside,
The exhaust control means includes
It has time measuring means for measuring the steam supply time during which steam is supplied into the heating chamber during cooking,
A heating cooker characterized in that exhaust is performed by operating the exhaust means until the amount of steam in the heating chamber becomes a steam amount at which the next cooking can be performed based on a result of timing by the timing means. The heating cooker according to claim 1, wherein
The timing means is a counter,
The exhaust cooker is characterized in that the exhaust control means starts counting down from the count value by the counter in association with the start of the exhaust operation, and exhausts by the exhaust means until the count value reaches a predetermined value. The cooking device according to claim 2,
A cooking device, comprising: a door for opening and closing the heating chamber, wherein the countdown speed is changed in association with the open / closed state of the door. The heating cooker according to claim 1, wherein
The timing means is a timer,
The exhaust control means starts counting down from the timer value counted by the timer in association with the start of the exhaust operation, and exhausts by the exhaust means until the timer value reaches a predetermined value. Cooking device. The cooking device according to claim 4, wherein
A cooking device, comprising: a door for opening and closing the heating chamber, wherein the predetermined value is increased in association with an open / closed state of the door. A steam generator for generating steam;
A heating chamber for heating an object to be heated by steam from the steam generator;
An exhaust passage for exhausting the gas in the heating chamber to the outside;
A suction means interposed in the exhaust passage, for sucking the gas in the heating chamber and exhausting it to the outside;
Opening degree adjusting means for adjusting the opening degree of the exhaust passage;
An exhaust control means for controlling at least the suction means and the opening degree adjusting means so as to exhaust the gas in the heating chamber to the outside,
The exhaust control means includes
During cooking, it has time measuring means for measuring the steam supply time from when steam is supplied from the steam generator until the heating chamber is filled with steam,
Based on the time measured by the time measuring means, the suction is performed until the exhaust time from when the opening degree adjusting means is opened until the amount of steam in the heating chamber reaches the amount of steam capable of performing the next cooking is passed. A cooking device characterized by causing the means and the opening degree adjusting means to perform an exhaust operation. The heating cooker according to claim 6, wherein
The timing means is a timer,
The exhaust control means regards the time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam as an index of the amount of steam that fills the heating chamber, The suction based on the time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam, and the time measured by the timer after the opening adjusting means is opened. A cooking device characterized by causing the means and the opening degree adjusting means to perform an exhaust operation. The heating cooker according to claim 6, wherein
The timing means is a counter,
The exhaust control means regards the count value by the counter from when steam is supplied from the steam generator until the heating chamber is filled with steam as an index of the amount of steam that fills the heating chamber, The suction based on the count value by the counter from when steam is supplied from the steam generator until the heating chamber is filled with steam, and the count value by the counter after the opening degree adjusting means is opened. A cooking device characterized by causing the means and the opening degree adjusting means to perform an exhaust operation. The cooking device according to claim 8,
The exhaust control means includes
Based on the first count value by the counter from when the steam is supplied from the steam generator until the heating chamber is filled with steam, the amount of steam in the heating chamber after the steam is supplied from the steam generator Set the second count value of the counter until the amount of steam that can perform the next cooking is reached,
During the exhaust operation, the count value of the counter is counted down from the first count value,
The cooking device according to claim 1, wherein when the count value of the counter reaches the second count value, the suction means and the opening degree adjusting means stop the exhaust operation. The cooking device according to claim 9,
The cooking device according to claim 1, wherein the first count value is a maximum value in the counter. The heating cooker according to any one of claims 8 to 10,
A cooking device, comprising: a door for opening and closing the heating chamber, wherein the countdown speed is changed in association with the open / closed state of the door. The cooking device according to claim 8,
In addition to the counter, the timer has a timer.
The exhaust control means includes
The time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam is considered to be an indicator of the amount of steam that fills the heating chamber,
In addition to the count value by the counter from when the steam is supplied from the steam generator until the heating chamber is filled with steam, and the count value by the counter after the opening degree adjusting means is opened, The suction based on the time measured by the timer from when steam is supplied from the steam generator until the heating chamber is filled with steam, and the time measured by the timer after the opening adjusting means is opened. A cooking device characterized by causing the means and the opening degree adjusting means to perform an exhaust operation. The heating cooker according to claim 6, wherein
A humidity sensor for detecting the humidity in the heating chamber;
The exhaust control means includes
Before the amount of steam in the heating chamber reaches the amount of steam that can perform the next cooking, and until the exhaust time until the humidity in the heating chamber reaches a humidity at which the humidity sensor can operate is elapsed, Based on the time measured by the time measuring means, the suction means and the opening degree adjusting means are caused to perform an exhaust operation,
After the exhaust time until the humidity in the heating chamber becomes a humidity at which the humidity sensor can operate, the humidity in the heating chamber can execute the next cooking based on the detection result of the humidity sensor. A cooking device characterized by causing the suction means and the opening degree adjusting means to perform an exhaust operation until humidity is reached. In the heating cooker according to claim 1 or claim 6,
Display means;
Display control means for switching and controlling the display content of the display means,
When the exhaust control unit or the suction unit and the opening degree adjusting unit perform the exhaust operation, the exhaust control unit causes the display control unit to display that at least a part of the display unit is exhausting. A cooking device characterized by that. In the heating cooker according to claim 1 or claim 6,
Display means for displaying selectable cooking menus;
A selection determining means for selecting and determining a desired cooking name from the cooking menu displayed on the display means;
Display control means for switching and controlling the display content of the display means,
When the cooking name using steam is selected and determined by the selection determining means, the display control means displays that the heating chamber is highly humid on at least a part of the display means. A cooking device characterized by that. In the heating cooker according to claim 1 or claim 6,
A display means for displaying a selectable cooking menu;
Of the cooking names displayed on the display means, a cooking name display form using microwaves is different from other cooking name display forms. The cooking device according to claim 2,
A door that opens and closes the heating chamber; a second counter different from the counter that counts the steam supply time during which steam is supplied into the heating chamber during cooking;
Display means for displaying selectable cooking menus;
Display control means for switching and controlling the display content of the display means,
The second counter counts down from the count value of the second counter only while the door is opened,
The display control means changes the display form of the cooking name using the microwave displayed on the display means until at least one of the counter and the second counter reaches the predetermined value. The cooking device is characterized by being different from the display form.

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