JP2011047613A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of optimally controlling an operation of a water supply pump according to on/off of a heater of a steam generating device even when a water supply capacity of the water supply pump is not matched to a heating capacity of the heater of the steam generating device. <P>SOLUTION: This heating cooker includes the water supply tank, the steam generating device heating the water supplied from the water supply tank by the steam generation heater 24, and generating the steam, a heating chamber for heating a heated object by the steam supplied from the steam generating device, the water supply pump 14 for supplying the water in the water supply tank to the steam generating device, and a control section 100 for controlling the steam generation heater 24 and the water supply pump 14. The control section 100 determines on-time duty of the water supply pump 14 according to on-time duty of the steam generation heater 24, and controls the water supply pump 14 on the basis of the determined on-time duty of the water supply pump 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooking device.

  2. Description of the Related Art Conventionally, as a cooking device, there is one that performs cooking using steam by supplying steam generated by a steam generator to a heating chamber (for example, JP 2009-41822 A (Patent Document 1). )reference).

  In the heating cooker, when the water supplied from the feed water pump is heated by the steam generating heater of the steam generator, steam is generated by synchronizing on / off of the steam generating heater and on / off of the feed water pump.

  By the way, in such a heating cooker, when trying to adopt a heater with low power consumption for the steam generating heater of the steam generating device due to the input power to other heaters or the capacity limit of household power supply, steam generation Due to the structure, it is not possible to reduce the water supply amount of the water supply pump in accordance with the heat amount of the heater. For this reason, when control is performed to synchronize the on / off of the steam generating heater with low power consumption and the on / off of the feed water pump, the steam generator supplies a sufficient amount of heat to make all the water supplied from the feed water pump into steam. There is a problem that the operation of the feed water pump cannot be optimally controlled according to the on / off of the heater of the steam generator.

JP 2009-41822 A

  Accordingly, an object of the present invention is to provide a heating that can optimally control the operation of the feed water pump according to the ON / OFF state of the heater of the steam generator, even if the feed capacity of the heater of the steam generator does not match the heating capacity of the heater of the steam generator. To provide a cooker.

In order to solve the above problems, the heating cooker of the present invention is:
A water tank,
A steam generator for generating steam by heating the water supplied from the water supply tank with a heater;
A heating chamber for heating an object to be heated by steam supplied from the steam generator;
A water supply pump for supplying water in the water supply tank to the steam generator;
A controller for controlling the heater of the steam generator and the feed water pump;
The control unit determines an on-time duty of the feed water pump or an on-time per unit time of the feed water pump according to an on-time duty of the heater of the steam generator, and the determined on-time of the feed water pump The feed water pump is controlled based on a duty or an on-time per unit time of the feed water pump.

  Here, the on-time duty is a ratio of the on-time per unit time. For example, when the on-time duty is on for 30 seconds at 1 minute intervals, the on-time duty is 50%.

  In a heating cooker, when the water supply capacity of the water supply pump is not appropriate for the heating capacity of the heater of the steam generator, there is too much water supply and water overflows from the inside of the container. The power is consumed and the efficiency becomes worse. Therefore, according to the cooking device configured as described above, the control unit determines the on-time duty of the feed water pump (or the on-time per unit time of the feed water pump) according to the on-time duty of the heater of the steam generator, By controlling the feed pump based on the determined on-time duty of the feed pump (or on-time per unit time of the feed pump), the feed capacity of the feed pump is greater than the heating capacity of the steam generator heater. When the amount of water supply is too large, the on-time duty of the water supply pump (or the on-time per unit time of the water supply pump) is reduced so that water does not overflow from the inside of the container while reliably generating steam. Also, when the water supply capacity of the water supply pump is small relative to the heating capacity of the heater of the steam generator and the amount of water supply is small, increase the on-time duty of the water supply pump (or the on-time per unit time of the water supply pump) It is also possible to prevent excess power from being consumed for heating while supplying the required amount of water to the steam generator. Thus, even if the water supply capacity of the water supply pump does not match the heating capacity of the heater of the steam generation apparatus, the operation of the water supply pump can be optimally controlled according to the on / off state of the heater of the steam generation apparatus. .

Moreover, in the heating cooker of one embodiment,
An operation unit for selecting one of a plurality of cooking menus;
The control unit determines an on-time duty of the heater of the steam generator or an on-time per unit time of the water supply pump according to the cooking menu selected by the operation unit.

  According to the above-described embodiment, depending on the cooking menu selected by the operation unit, the on-time duty of the heater of the steam generator (or the on-time per unit time of the feed water pump) is determined, and thus varies depending on the cooking menu. Since the steam amount suitable for the cooking menu is supplied to the heating chamber by the on-time duty of the heater of the steam generator, it is possible to perform cooking with good finish.

Moreover, in the heating cooker of one embodiment,
A temperature sensor for detecting the housing temperature of the steam generator;
The control unit does not turn on the water supply pump when the housing temperature of the steam generator detected by the temperature sensor is lower than a predetermined temperature.

  According to the above embodiment, when the housing temperature of the steam generator detected by the temperature sensor is lower than the predetermined temperature, the control unit does not turn on the water supply pump, so that the housing temperature of the steam generator rises to a temperature sufficient for steam generation. When it is not, water can be prevented from being supplied, and the operation of the water supply pump can be controlled more optimally.

Moreover, in the heating cooker of one embodiment,
An operation unit for selecting one of a plurality of cooking menus;
Each cooking menu comprises at least a control table that stores in advance the on-time duty of the heater of the steam generator and the on-time duty of the feed water pump or the on time per unit time of the feed water pump,
Based on the cooking menu selected by the operation unit, the control unit is configured to turn on the heater on-time duty of the steam generator, on-time duty of the water supply pump, or on-time per unit time of the water supply pump. And control the heater and the feed water pump of the steam generator.

  According to the above embodiment, for each cooking menu, at least the on-time duty of the heater of the steam generator and the on-time duty of the feed water pump or the on-time per unit time of the feed water pump are preliminarily stored. Based on the cooking menu selected by the operation unit, the heater on-time duty of the heater of the steam generator and the on-time duty of the feed water pump or the on time per unit time of the feed water pump are read out, and the heater of the steam generator And control the water pump. Therefore, different control conditions for each cooking menu can be set finely, and control becomes easy and cooking with good finish can be performed.

  As is clear from the above, according to the heating cooker of the present invention, even if the water supply capacity of the water supply pump does not match the heating capacity of the heater of the steam generation device, the water supply pump is turned on and off according to the on / off state of the steam generation heater. It is possible to realize a heating cooker that can optimally control the operation.

FIG. 1 is a front view of a heating cooker according to an embodiment of the present invention. FIG. 2 is a perspective view of the heating cooker from which the top and both sides of the casing are removed, as viewed from the front and obliquely above. FIG. 3 is a perspective view of the cooking device with the handle door open. FIG. 4 is a perspective view of the cooking device as viewed from the rear and obliquely above. FIG. 5 is a side view of the heating cooker. FIG. 6 is a control block diagram of the cooking device. FIG. 7 is a flowchart for explaining the operation of the controller of the heating cooker. FIG. 8 is a diagram showing a control data table in which control data is stored for each cooking menu. FIG. 9 is a diagram illustrating the operation of the water supply pump when the on-time duty of the steam generating heater is 100%. FIG. 10 is a diagram showing the operation of the water supply pump when the on-time duty of the steam generating heater is 80%. FIG. 11 is a diagram illustrating the operation of the water supply pump when the on-time duty of the steam generating heater is 50%. FIG. 12 is a flowchart for explaining the operation of the control unit of the cooking device. FIG. 13 is a diagram showing a control data table in which control data is stored for each cooking menu.

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

  FIG. 1 is a front view of a heating cooker according to an embodiment of the present invention.

  As shown in FIG. 1, the heating cooker includes a casing 1 and a door 2 with a slide opening and closing handle attached to the front side of the casing 1. Further, an operation panel 3 as an example of an operation unit is provided on the front side of the casing 1 so as to be adjacent to the door 2 with a handle when closed. A dew receiving device 4 is arranged below the door 2 with handle and the operation panel 3.

  A substantially cylindrical dial 5 is rotatably attached to the operation panel 3. Further, the operation panel 3 has a liquid crystal display unit 7, and the liquid crystal display unit 7 performs display according to the operation of the dial 5.

  The dew receptacle 4 is a container that can be attached to and detached from the two front legs 6, 6 provided on the front side of the bottom of the casing 1. When the dew receptacle 4 is inserted into the lower side of the casing 1 from the front to the rear and attached to the front legs 6, 6, a part of the dew receptacle 4 is the rear surface (rear surface) of the door 2 with the handle when closed. Located below. Thereby, when the door 2 with a handle is opened, the dew condensation water adhering to the rear surface of the door 2 with the handle is dripped into the dew receiver 4.

  FIG. 2 shows a perspective view of the heating cooker from which the top and both sides of the casing 1 have been removed as seen from diagonally forward, and FIG. 3 is a perspective view of the heating cooker with the handle door open. Is shown. FIG. 4 is a perspective view of the heating cooker of FIG. 2, 3, and 4, the same reference numerals are assigned to the same components.

  Inside the casing 1, as shown in FIGS. 2, 3, and 4, a heating chamber 8 for heating the cooking object is installed (see FIG. 3). In the casing 1, an electrical component chamber 9 is provided as an example of a cooling space at the side of the heating chamber 8 and behind the operation panel 3, and the intake space 10 is disposed behind the heating chamber 8 and behind the electrical component chamber 9. Provided.

  The heating chamber 8 has an opening 8a (shown in FIG. 3) on the front side, and the door 2 with a handle slides back and forth by a pair of rail units 31 to open and close the opening 8a. The rail unit 31 includes a movable rail having one end fixed to the door 2 with a handle, and a fixed rail that is fixed to the casing 1 and supports the movable rail in a slidable manner. Further, the tray 32 is pulled out together with the door 2 with a handle. By opening and closing the door with handle 2, the food to be cooked placed on the tray 32 is taken out from the heating chamber 8 or put into the heating chamber 8. Further, heat shield plates 11, 11,... Are arranged above, below, behind and on both sides of the heating chamber 8. A space between the heat shield plate 11 and the heating chamber 8 is filled with a heat insulating material (not shown).

  In the electrical component chamber 9, a steam generator 13 that generates steam to be supplied to the heating chamber 8, a water supply pump 14 connected to the steam generator 13 via a water supply tube 20, and the water pump 14 There is a tank storage portion 15 arranged in front of the tank. When the cooking object is heated, cooling air from the cooling fan 16 flows through the electrical component chamber 9 so that electrical components such as the water supply pump 14 can be cooled.

  As the cooling fan 16 is driven, air outside the casing 1 flows into the intake space 10 from the four intake ports 17, 17, 17, 17. The air in the intake space 10 is sent into the electrical component chamber 9 by the cooling fan 16.

  The upstream end of the exhaust tube 18 is connected to an exhaust port provided at the rear portion of the heating chamber 8 via a catalyst unit (not shown) installed above the rear portion of the heating chamber 8. The downstream end (exhaust port) of the exhaust tube 18 is connected to a synthetic resin exhaust duct 19 disposed on the side of the tank housing 15. The exhaust tube 18 is made of a synthetic resin having flexibility, and is installed from the upper rear side to the lower front side of the electrical component chamber 9.

  And the gas in the heating chamber 8 is guided from the rear part of the casing 1 to the front side by the exhaust tube 18 and the exhaust duct 19 so as to go out of the casing 1.

  2, 3, and 4, reference numeral 21 denotes a partition wall that partitions the electrical component chamber 9 and the intake space 10. A cooling fan 16 is attached to the partition wall 21. Further, as shown in FIG. 4, the upper heater storage portion 25 is disposed above the heating chamber 8, and the upper heater 26 is disposed in the upper heater storage portion 25. The upper heater housing 25 and the upper heater 26 constitute a steam temperature raising device. Further, a lower heater storage portion (not shown) is disposed below the heating chamber 8, and a lower heater 27 (shown in FIG. 6) is disposed in the lower heater storage portion.

  FIG. 5 is a side view of the cooking device of FIG. 2. In FIG. 5, the same reference numerals are assigned to the same components as those in FIGS. 2, 3, and 4.

  The tank storage unit 15 stores a water supply tank 23. When the door 2 with the handle is opened, the front surface of the water supply tank 23 is exposed and can be taken in and out of the tank storage portion 15 (see FIG. 3). Further, the water in the water supply tank 23 is supplied to the steam generator 13 through the water supply tube 20 by driving the water supply pump 14. The steam generator 13 heats the water from the feed water pump 14 with a steam generating heater 24 to generate water vapor. The steam generator 13 is provided with a housing temperature sensor 70 for detecting the housing temperature.

  A region on the right side of the bottom surface in the dew receiver 4 faces an opening of the discharge port 22 provided on the lower side of the upper exhaust duct 19. The exhaust from the discharge port 22 of the exhaust duct 19 is received in the lower dew receiver 4 and diffused outside the casing 1. At this time, the exhaust gas diffuses from the inside of the dew receiving device 4 to a wide external space on the front side of the casing 1 from the space between the dew receiving device 4 and the door 2 with handle and the space between the dew receiving device 4 and the casing 1.

  In addition, the dew receptacle 4 receives water droplets dripping from the discharge port 22 of the exhaust duct 19, and the dew receptacle 4 receives water drops falling along the rear surface of the door 2 with the handle and the front surface of the casing 1.

  FIG. 6 shows a control block diagram of the cooking device. As shown in FIG. 6, this cooking device includes a control unit 100 including a microcomputer and an input / output circuit. Based on the operation input signal from the operation panel 3 and the detection signals from the housing temperature sensor 70 and the internal temperature sensor 71, the control unit 100 controls the liquid crystal display unit 7, the water supply pump 14, the cooling fan 16, the steam generating heater 24, and the like. The upper heater 26 and the lower heater 27 are controlled.

  In the cooking device having the above-described configuration, after the door 2 with handle is pulled out as shown in FIG. 3, the water supply tank 23 containing the required amount of water is stored in the tank storage unit 15, and then the operation panel 3 is operated. Then, cooking using steam is started. Then, the upper heater 26 and the lower heater 27 disposed above and below the heating chamber 8 are turned on, and the water supply pump 14 is driven to supply the water in the water supply tank 23 to the steam generator 13. The water supplied to is heated by the steam generating heater 24 to generate water vapor. And the water vapor | steam generate | occur | produced in the steam generation apparatus 13 blows off in the upper heater accommodating part 25 above the heating chamber 8, and is heated by the upper heater 26, and turns into 100 degreeC or more superheated steam. The superheated steam is supplied into the heating chamber 8 through a plurality of holes provided in an upper cover (not shown) on the ceiling surface of the heating chamber 8. Thereby, the food placed on the tray 32 in the heating chamber 8 is radiated heat from the upper cover on the ceiling surface side of the heating chamber 8, radiant heat from the lower cover on the bottom side, and a plurality of holes in the upper cover. It is cooked with superheated steam of 100 ° C. or more blown out from the top. At this time, the superheated steam supplied and adhered to the food surface condenses on the food surface and gives a large amount of latent heat of condensation to the food, so that heat can be efficiently transferred to the food.

  Further, in this heating cooker, oven cooking using only the upper heater 26 and the lower heater 27 may be performed without using steam, or the steam generator 13 generates without using the upper heater 26 and the lower heater 27. Steamed dishes using only steam that has been performed may be performed.

  Further, when food is put in the heating chamber 8 and cooked, when the inside of the heating chamber 8 becomes hot and steam or smoke comes out of the heated food and fills the heating chamber 8, the heating chamber 8 The exhaust is guided to the front side through the electrical component chamber 9 which is a cooling space in the casing 1 by the exhaust tube 18. Then, the dew acceptor 4, which is an exhaust receiver provided on the front side of the casing 1, receives the exhaust from the exhaust port of the exhaust tube 18 and diffuses it outside the casing 1. Here, when the high-temperature exhaust gas containing water vapor from the inside of the heating chamber 8 passes through the electrical component chamber 9 in the casing 1 through the exhaust tube 18, the exhaust gas cooled and cooled to It can be received by the dew receptacle 4 on the side and diffused into a large external space in front of the casing 1.

  As a result, even if there is a wall near the rear side of the heating cooker body or there is a shelf directly above, the exhaust inside the cabinet is not discharged from the rear side of the main body. Will not corrode and mold will not propagate. Therefore, even if installed in a narrow space, the exhaust from the inside of the heating chamber 8 can be processed without exhausting from the rear side.

  By the way, in the conventional cooking device, when the water supplied from the feed water pump is heated by the steam generation heater (900 W) of the steam generation device, the steam generation heater is synchronized with the on / off of the feed water pump to generate steam. It was generated. On the other hand, in the cooking device of this embodiment, the steam generating heater 24 of the steam generating device 13 is controlled by the input power of the upper heater 26 (730 W) and the lower heater 27 (440 W), the capacity limit of the household power supply, or the like. However, the water supply pump 14 cannot easily reduce the amount of water supply due to its structure. For this reason, if the control which synchronizes the on / off of the heater 24 for steam generation and the on / off of the water supply pump 14 is performed, the steam generator 13 cannot obtain the amount of heat sufficient to convert all the water supplied from the water supply pump 14 into steam.

  Therefore, in the heating cooker according to the embodiment of the present invention, the on-time of the feed water pump 14 is made smaller than the on-time of the steam generating heater 24 according to the on / off control of the steam generating heater 24 of the steam generating device 13. In addition, the duty control of the ON time of the feed water pump 14 is performed.

  FIG. 7 shows a flowchart for explaining the operation of the controller 100 of the cooking device.

  First, when the process starts, in step S1, the user operates the operation panel 3 to set a cooking menu.

  Next, the process proceeds to step S2, and after heating is started, the process proceeds to step S3, and the on-time duty Hd (%) of the steam generating heater 24 of the steam generating device 13 is set with reference to the control data table shown in FIG. get.

  Next, the process proceeds to step S4, where it is determined whether or not the on-time duty Hd of the steam generating heater 24 is 80% or more. And if it determines with the ON time duty Hd of the heater 24 for steam generation being 80% or more by step S4, it will progress to step S5.

In step S5, the ON time Pt per minute of the feed water pump 14 is determined by the following equation.
Pt = 60 seconds x Hd x 60%
Here, the on-time duty of the water supply pump 14 is Hd × 60%.

  Next, it progresses to step S6, and after cooking by heating control, this process is complete | finished.

  On the other hand, if it is determined in step S4 that the on-time duty Hd of the steam generating heater 24 is less than 80%, the process proceeds to step S7, and it is determined whether or not the on-time duty Hd of the steam generating heater 24 is 60% or more. . When it is determined in step S4 that the on-time duty Hd of the steam generating heater 24 is 60% or more, the process proceeds to step S8.

In step S8, the ON time Pt per minute of the water supply pump 14 is determined by the following equation, and the process proceeds to step S6.
Pt = 60 seconds x Hd x 63%
Here, the on-time duty of the water supply pump 14 is Hd × 63%.

  If it is determined in step S7 that the on-time duty Hd of the steam generating heater 24 is less than 60%, the process proceeds to step S9, and it is determined whether or not the on-time duty Hd of the steam generating heater 24 is 40% or more. . When it is determined in step S7 that the on-time duty Hd of the steam generating heater 24 is 40% or more, the process proceeds to step S10.

In step S10, the ON time Pt per minute of the water supply pump 14 is determined by the following equation, and the process proceeds to step S6.
Pt = 60 seconds x Hd x 66%
Here, the on-time duty of the water supply pump 14 is Hd × 66%.

  On the other hand, when it is determined in step S9 that the on-time duty Hd of the steam generating heater 24 is less than 40%, the on-time Pt of the feed water pump 14 is determined in the same manner and the heat treatment is performed.

  FIG. 8 shows a control data table in which control data is stored for each cooking menu. As shown in FIG. 8, for example, when the cooking menu is “salt salmon”, the on-time of the upper heater 26 per minute is shown. Is 10 seconds, the ON time per minute of the lower heater 27 is 10 seconds, the ON time duty of the steam generating heater 24 is 80%, and the heating time is 200 seconds. On-time of the upper heater 26, the lower heater 27, and the steam generating heater 24 is determined based on the control data set in the control data table in advance for each cooking menu, and further, the on-time duty of the steam generating heater 24 is determined. Based on the above, the on-time Pt of the feed water pump 14 is determined by the processing of the flowchart shown in FIG.

  9 shows the operation of the feed water pump 14 when the on-time duty Hd of the steam generating heater 24 is 100%, and FIG. 10 shows the operation of the feed water pump 14 when the on-time duty Hd of the steam generating heater 24 is 80%. FIG. 11 shows the operation of the water supply pump 14 when the on-time duty Hd of the steam generating heater 24 is 50%. 9 to 11, the horizontal axis represents time (seconds), and the vertical axis represents the housing temperature of the steam generator 13 detected by the housing temperature sensor 70.

  As shown in FIG. 9, in the selected cooking menu, when the on-time duty of the steam generating heater 24 is 100%, the steam generating heater 24 is continuously turned on during the heating time from the start of heating. Become. Then, the water supply pump 14 is turned on only for 36 seconds (= 60 seconds × 100 × 60) at intervals of 60 seconds.

  Also, as shown in FIG. 10, when the on-time duty of the steam generating heater 24 is 80% in the selected cooking menu, the steam generating heater 24 is heated at 60 second intervals during the heating time. It is turned on only for 48 seconds (= 60 seconds × 80). Then, the water supply pump 14 is turned on only for 28.8 seconds (= 60 seconds × 80 × 60) at intervals of 60 seconds.

  Further, as shown in FIG. 11, in the selected cooking menu, when the on-time duty of the steam generating heater 24 is 50%, the steam generating heater 24 is heated at intervals of 60 seconds from the start of heating. It is turned on only for 30 seconds (= 60 seconds × 50). Then, the water supply pump 14 is turned on for 19.8 seconds (= 60 seconds × 50 × 66) at intervals of 60 seconds.

  9 to 11, when the housing temperature of the steam generator 13 detected by the housing temperature sensor 70 is lower than a predetermined temperature TH, the control unit 100 is configured not to turn on the water supply pump 14.

  According to the cooking device configured as described above, the control unit 100 determines the on-time duty of the feed water pump 14 according to the on-time duty Hd of the steam generating heater 24, and determines the determined on-time duty of the feed water pump 14. By controlling the water supply pump 14 based on this, when the water supply capacity of the water supply pump 14 is larger than the heating capacity of the steam generating heater 24 and the water supply amount is too large, the on-time duty of the water supply pump 14 is decreased. The water is prevented from overflowing from the inside of the steam generator 13 while reliably generating the steam. Thus, even if the water supply capacity of the water supply pump 14 does not match the heating capacity of the steam generation heater 24, the operation of the water supply pump 14 can be optimally controlled according to the on / off state of the steam generation heater 24. become.

  Further, by determining the on-time duty Hd of the steam generating heater 24 in accordance with the cooking menu selected by the operation panel 3, it is suitable for the cooking menu by the on-time duty Hd of the steam generating heater 24 which varies depending on the cooking menu. Since the amount of steam is supplied to the heating chamber 8, it is possible to perform cooking with good finish.

  Further, as shown in FIGS. 9 to 11, when the housing temperature of the steam generator 13 detected by the housing temperature sensor 70 is lower than a predetermined temperature TH, the control unit 100 does not turn on the water supply pump 14, thereby generating steam. When the housing temperature of the device 13 has not risen to a temperature sufficient for steam generation, water can be prevented from being supplied, and the operation of the feed water pump 14 can be controlled more optimally.

  In the said embodiment, as shown in FIG.7, FIG.8, the ON time duty Hd of the heater 24 for steam generation is acquired from the control data table according to a cooking menu, and based on the ON time duty Hd, the feed water pump 14 of FIG. Although the on-time is calculated, the present invention is not limited to this, and the on-time per minute determined by the on-time duty of the water supply pump is registered together with the on-time duty of the heater for steam generation in the control data table corresponding to the cooking menu. Also good.

  For example, FIG. 12 shows a flowchart for explaining the operation of the control unit of the cooking device.

  First, when the process starts, in step S11, the user operates the operation panel 3 to set a cooking menu.

  Next, the process proceeds to step S12, and after heating is started, the process proceeds to step S13, and the on-time duty Hd (%) of the steam generating heater 24 of the steam generating device 13 is set with reference to the control data table shown in FIG. get.

  Next, it progresses to step S14 and the ON time Pt per minute of the water supply pump 14 is acquired with reference to the control data table shown in FIG.

  Next, it progresses to step S15, and after cooking by heating control, this process is complete | finished.

  FIG. 13 shows a control data table in which control data is stored for each cooking menu. As shown in FIG. 13, for example, when the cooking menu is “salt salmon”, the on-time of the upper heater 26 per minute. Is 10 seconds, the on-time of the lower heater 27 is 10 seconds, the on-time duty of the steam generating heater 24 is 80%, the on-time of the feed water pump 14 is 36 seconds, and the heating time is 200 seconds. It is. On-time of the upper heater 26, the lower heater 27, the steam generating heater 24, and the water supply pump 14 is determined based on the control data set in advance for each cooking menu in the control data table.

  As described above, for each cooking menu, a control table in which the on-time duty of the steam generating heater 24 and the on-time duty of the water supply pump 14 or the on time per unit time of the water supply pump 14 is stored in advance is used. Therefore, it is possible to finely set different control conditions for each cooking menu, and it becomes easy to control and cook with good finish.

  Moreover, although the said embodiment demonstrated the heating cooker which performs the cooking using the superheated steam of 100 degreeC or more, as cooking which heats a to-be-heated object in the heating chamber 8, the cooking using only a heater Alternatively, heat cooking including steamed dishes using steam may be used.

  Moreover, in the said embodiment, although the opening part 8a of the heating chamber 8 was opened and closed by the door 2 with a handle which slides in the front-back direction with respect to the casing 1, for example, the opening portion of the heating chamber is formed by a pivotable opening / closing door. May be opened and closed. That is, the open / close door provided in the cooking device of the present invention may be a sliding type or a rotating type.

  Examples of the cooking device of the present invention include not only an oven range using superheated steam but also an oven using superheated steam, an oven range not using superheated steam, and an oven not using superheated steam.

  In the cooking device of the present invention, healthy cooking can be performed by using superheated steam or saturated steam in a microwave oven or the like. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam adhered to the food surface is condensed to give a large amount of condensation latent heat to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Further, the inside of the heating chamber is filled with superheated steam or saturated steam, and becomes anoxic state, thereby enabling cooking while suppressing oxidation of food.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Casing 2 ... Door with a handle 3 ... Operation panel 4 ... Dew receptacle 5 ... Dial 6, 6 ... Front leg 7 ... Liquid crystal display part 8 ... Heating chamber 9 ... Electrical component room 10 ... Intake space 11, 11 ... Heat shield DESCRIPTION OF SYMBOLS 13 ... Steam generator 14 ... Water supply pump 15 ... Tank storage part 16 ... Cooling fan 17 ... Intake port 18 ... Exhaust tube 19 ... Exhaust duct 20 ... Water supply tube 21 ... Partition wall 22 ... Discharge port 23 ... Supply water tank 24 ... Steam generation Heater 25 ... upper heater housing 26 ... upper heater 27 ... lower heater 70 ... housing temperature sensor 71 ... inside temperature sensor

Claims (4)

A water tank,
A steam generator for generating steam by heating the water supplied from the water supply tank with a heater;
A heating chamber for heating an object to be heated by steam supplied from the steam generator;
A water supply pump for supplying water in the water supply tank to the steam generator;
A controller for controlling the heater of the steam generator and the feed water pump;
The control unit determines an on-time duty of the feed water pump or an on-time per unit time of the feed water pump according to an on-time duty of the heater of the steam generator, and the determined on-time of the feed water pump A heating cooker that controls the water supply pump based on a duty or an on-time per unit time of the water supply pump. The heating cooker according to claim 1, wherein
An operation unit for selecting one of a plurality of cooking menus;
The control unit determines an on-time duty of the heater of the steam generator or an on-time per unit time of the water supply pump according to the cooking menu selected by the operation unit. Cooking device. The heating cooker according to claim 1 or 2,
A temperature sensor for detecting the housing temperature of the steam generator;
The cooker according to claim 1, wherein the controller does not turn on the water supply pump when the housing temperature of the steam generator detected by the temperature sensor is lower than a predetermined temperature. The heating cooker according to claim 1, wherein
An operation unit for selecting one of a plurality of cooking menus;
Each cooking menu comprises at least a control table that stores in advance the on-time duty of the heater of the steam generator and the on-time duty of the feed water pump or the on time per unit time of the feed water pump,
Based on the cooking menu selected by the operation unit, the control unit is configured to turn on the heater on-time duty of the steam generator, on-time duty of the water supply pump, or on-time per unit time of the water supply pump. And controlling the heater and the feed water pump of the steam generator.

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