JP2018096569A - Thermal cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal cooker capable of shortening a time from start of thermal cooking to generation of steam, and shortening a thermal cooking time with steam.SOLUTION: A thermal cooker includes: a heating box configured to store an object to be heated; heating units (20, 21, 22) configured to heat the object to be heated in the heating box; a steam generator configured to generate steam supplied to the heating box; a water supply tank configured to supply water to the steam generator; a water supply/discharge pump 25; and a controller 100. The controller 100 has a preheating mode control unit (100b) having a preheating mode that in a standby state before start of thermal cooking, water is supplied from the water supply tank into a steam generation container of the steam generator, the steam generation container is heated by a heater 73 for steam generation and a temperature of water in the steam generation container is kept so as to become 80°C.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, there is one that controls the amount of steam generated by controlling the temperature of a water storage section in cooking using steam (see, for example, JP 2009-2628 A (Patent Document 1)). ).

JP 2009-2628 A

  However, in the above cooking device, since the steam generating heater is turned on at the start of cooking using steam, it takes several tens of seconds until the steam is generated, and the cooking cannot be performed in a short time. There is.

  Then, the subject of this invention is providing the heating cooker which can shorten the time from the start of heating cooking to steam generation, and can shorten the cooking time using steam.

In order to solve the above problems, the heating cooker of the present invention is:
A heating cabinet for storing an object to be heated;
A heating unit for heating an object to be heated in the heating chamber;
A steam generator for generating steam to be supplied to the heating chamber;
A water supply unit for supplying water to the steam generator;
A controller for controlling the heating unit, the steam generator, and the water supply unit;
The control device
In a standby state before the start of cooking, water is supplied from the water supply unit into the steam generating container, and the steam generating container is heated by a steam generating heater of the steam generating device to store the steam generating container in the steam generating container. It has the preheating mode control part made into the preheating mode which keeps water so that it may become preset temperature.

  As is clear from the above, according to the present invention, in the standby state before the start of cooking, water is supplied from the water supply unit into the steam generating container, and the steam generating container is installed by the steam generating heater of the steam generating device. Realizing a heating cooker that can shorten cooking time by shortening the time to steam generation by using a preheating mode that heats and keeps the water in the steam generating container at a preset temperature. Can do.

FIG. 1 is an external perspective view of a cooking device according to a first embodiment of the present invention. FIG. 2 is a schematic diagram for explaining a configuration of a main part of the cooking device. FIG. 3 is a control block diagram of the cooking device. FIG. 4 is a diagram showing changes in the water temperature of the comparative example. FIG. 5 is a diagram showing a change in water temperature when heating cooking is started from the preheating mode in the cooking device. FIG. 6 is a control block diagram of the heating cooker according to the second embodiment of the present invention. FIG. 7 is a control block diagram of the heating cooker according to the third embodiment of the present invention. FIG. 8 is a diagram showing changes in the water temperature of the comparative example. FIG. 9 is a diagram showing changes in water temperature at the end of heating cooking in the heating cooker. FIG. 10 is a schematic view for explaining the configuration of the main part of the heating cooker according to the fourth embodiment of the present invention. FIG. 11 is a control block diagram of the cooking device.

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

[First Embodiment]
FIG. 1: has shown the external appearance perspective view of the heating cooker of 1st Embodiment of this invention. This cooking device is a commercial cooking device.

  As shown in FIG. 1, the heating cooker of the first embodiment includes a rectangular parallelepiped main body casing 1, a heating chamber 2 (shown in FIG. 2) provided in the main body casing 1, and a heating chamber 2. And a door 3 for opening and closing the opening.

  An air outlet 5 is provided above the door 3 of the main body casing 1. A dew receptacle 6 is detachably attached to the lower part of the front surface of the main casing 1. The dew receptacle 6 is located below the door 3 and can receive water droplets from the rear surface of the door 3 (surface on the heating chamber 2 side) and the front plate of the main casing 1. A water supply tank 26 is also detachably attached to the lower part of the front surface of the main casing 1.

  The door 3 is attached to the front side of the main casing 1 so as to be rotatable about the lower side as an axis. A handle 8 is provided above the door 3.

  An operation panel 9 is provided on the front side of the main casing 1 and on the right side of the door 3. The operation panel 9 includes a color liquid crystal display unit 10 and a button group 11. The button group 11 includes a start key, a cancel key to be pressed, and the like.

  An object to be heated is accommodated in the heating chamber 2. Moreover, the metal cooking trays 91 and 92 (shown in FIG. 2) can be taken in and out of the heating chamber 2.

  FIG. 2 is a schematic diagram for explaining the configuration of the main part of the cooking device. In this FIG. 2, the state which looked at the heating chamber 2 from the left side is shown. In FIG. 2, the same components as those in FIG. 1 are denoted by the same reference numerals.

  The heating cooker includes a circulation duct 18, a circulation fan 19, an upper heater 20, an intermediate heater 21, a lower heater 22, a circulation damper 23, a water supply / drainage pump 25, a water supply tank 26, and a steam generator 70. I have. Each of the upper heater 20, the middle heater 21, and the lower heater 22 is composed of, for example, a sheathed heater. Further, the upper heater 20, the middle heater 21 and the lower heater 22 constitute a heating unit.

  In addition, although the tube pump was used for the water supply / drainage pump 25, what is necessary is just a pump which can switch water supply operation | movement and drainage operation with a drive direction.

  Note that the fan that stirs the inside of the heating chamber 2 may be provided separately from the circulation fan 19.

  The upper part 2e of the heating chamber 2 is connected to the rear portion 2d of the heating chamber 2 through an inclined portion 2f that is inclined with respect to the horizontal direction. A plurality of suction ports 27 are provided in the inclined portion 2 f so as to face the circulation fan 19. A plurality of upper air outlets 28 are provided in the upper part 2 e of the heating chamber 2. A plurality of first rear outlets 29, a plurality of second rear outlets 30, and a plurality of third rear outlets 31 are provided in the rear portion 2 d of the heating chamber 2.

  The circulation duct 18 communicates with the inside of the heating chamber 2 through the suction port 27, the upper outlet 28, and the first to third rear outlets 29-31. The circulation duct 18 is provided from the upper side to the rear side of the heating chamber 2 and extends so as to exhibit an inverted L shape. The width in the left-right direction of the circulation duct 18 is set to be narrower than the width in the left-right direction of the heating chamber 2.

  The circulation fan 19 is a centrifugal fan and is driven by a circulation fan motor 56. When the circulation fan motor 56 drives the circulation fan 19, air or saturated steam (hereinafter referred to as “air” or the like) in the heating chamber 2 is sucked into the circulation duct 18 from the plurality of suction ports 27 and circulated. Blows out radially outward of the fan 19. More specifically, on the upper side of the circulation fan 19, air or the like flows obliquely upward from the circulation fan 19 and then flows from the rear toward the front. On the other hand, below the circulation fan 19, air or the like flows obliquely downward from the circulation fan 19 and then flows downward from above. The air is an example of a heat medium.

  An internal temperature sensor 76 (shown in FIG. 3) is disposed in the circulation duct 18 and in the vicinity of the outside of the circulation fan 19. The internal temperature sensor 76 detects the temperature of the heat medium sucked from the heating chamber 2 through the suction port 27, that is, the internal temperature.

  The upper heater 20 is disposed in the circulation duct 18 and faces the upper portion 2 e of the heating chamber 2. The upper heater 20 heats air flowing to the upper outlet 28.

  The middle heater 21 is formed in an annular shape and surrounds the circulation fan 19. The middle heater 21 heats air or the like from the circulation fan 19 toward the upper heater 20 or heats air or the like from the circulation fan 19 toward the lower heater 22.

  The lower heater 22 is disposed in the circulation duct 18 and faces the rear portion 2 d of the heating chamber 2. The lower heater 22 heats air flowing to the second and third rear outlets 30 and 31.

  The circulation damper 23 is rotatably provided in the circulation duct 18 and between the middle heater 21 and the lower heater 22. The circulation damper 23 is rotated by a circulation damper motor 59 (shown in FIG. 3).

  Further, the steam generator 70 is cast on a metal steam generating container 71 having an upper opening, a lid portion 72 made of a heat resistant resin covering the upper opening of the steam generating container 71, and a bottom 71a of the steam generating container 71. And a steam generating heater 73 composed of a sheathed heater. Water from the water supply tank 26 accumulates on the bottom 71 a of the steam generation container 71, and a steam generation heater 73 heats the water through the steam generation container 71. The saturated steam generated by heating by the steam generating heater 73 flows through the resin steam tube 35 and the metal steam pipe 36 and is supplied into the heating chamber 2 through the plurality of steam supply ports 37. The

  The saturated steam in the heating chamber 2 is sent to the upper heater 20, the middle heater 21 and the lower heater 22 by the circulation fan 19, and heated by the upper heater 20, the middle heater 21 and the lower heater 22, thereby being 100 ° C. It becomes the above superheated steam.

  A water level sensor 75 comprising a pair of electrode rods 75a and 75b is attached to the lid portion 72. Based on whether or not the electrode rods 75a and 75b are in a conductive state, it is determined whether or not the water level on the bottom 71a of the steam generating container 71 has reached a predetermined water level.

  The water supply / drainage pump 25 squeezes an elastically deformable water supply / drainage tube 40 made of silicon rubber or the like with a roller (not shown), and causes water in the water supply tank 26 to flow to the steam generator 70 depending on the driving direction of the roller. Or the water in the steam generator 70 is caused to flow into the water supply tank 26.

  The water supply tank 26 has a water supply tank main body 41 and a communication pipe 42. One end of the communication pipe 42 is located in the water supply tank body 41, while the other end of the communication pipe 42 is located outside the water supply tank 26. When the water supply tank 26 is accommodated in the tank cover 43, the other end of the communication pipe 42 is connected to the water supply / drainage tube 40 via the tank joint 44. That is, the inside of the water supply tank main body 41 communicates with the inside of the steam generator 70 via the communication pipe 42 and the like.

  The water supply / drainage pump 25, the water supply tank 26, the water supply / drainage tube 40, the tank cover 43, and the tank joint portion 44 constitute a water supply portion. The water supply unit is not limited to this, and may be configured to be supplied from an external water supply source.

  FIG. 3 shows a control block diagram of the cooking device.

  As shown in FIG. 3, the cooking device includes a control device 100 including a microcomputer and an input / output circuit. The control device 100 includes an upper heater 20, an intermediate heater 21, a lower heater 22, a steam generation heater 73, a circulation fan motor 56, a circulation damper motor 59, an operation panel 9, a humidity sensor 53, and an internal temperature sensor 76. The water level sensor 75, the water supply / drainage pump 25, the magnetron 4 and the like are connected.

  The control device 100 is based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, etc., and the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, and the circulation. The fan motor 56, circulation damper motor 59, water supply / drainage pump 25, magnetron 4 and the like are controlled.

  Moreover, the said control apparatus 100 has the heating control part 100a and the preheating mode control part 100b.

  The heating control unit 100a performs heating cooking by controlling the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, the magnetron 4, and the like.

  In the standby state before the start of cooking, the preheating mode control unit 100b supplies water into the steam generating container 71 of the steam generating device 70, heats the steam generating container 71 with the steam generating heater 73, and generates steam. The temperature of the water in the generation container 71 is kept at a preset temperature (80 ° C. in this embodiment) (preheating mode).

  When cooking with superheated steam in the heating cooker having the above-described configuration, steam is supplied from the steam generator 70 into the heating chamber 2 while circulating the gas in the heating chamber 2 with the circulation fan 19 by the heating control unit 100a. Then, the inside of the heating chamber 2 is heated by controlling the upper heater 20, the middle heater 21, and the lower heater 22. Thereby, the superheated steam circulates in the heating chamber 2 through the circulation duct 18.

  FIG. 4 shows changes in the water temperature of the comparative example, and FIG. 5 shows changes in the water temperature when heating cooking is started from the preheating mode in the heating cooker. 4 and 5, the horizontal axis represents the heating time [sec], and the vertical axis represents the water temperature [° C.]. 4 and 5, the power of the steam generating heater 73 is 1350 W, and 15 milliliters of water is stored in the steam generating container 71.

  In the comparative example of FIG. 4, the water supply / drainage pump 25 and the steam generating heater 73 are turned on at the start of cooking, whereas in FIG. 5, the steam generation of the steam generating device 70 is performed by the preheating mode control unit 100 b. In the preheating mode, the steam generating container 71 is heated by the heater 73 to keep the water in the steam generating container 71 at 80 ° C. set in advance.

  In the case of the comparative example of FIG. 4 in which the preheating mode is not set, after heating cooking is started, the water supply / drainage pump 25 is driven to supply water from the water supply tank 26 into the steam generation container 71 until the water reaches a predetermined water level. The generation heater 73 is turned on. In this case, as shown in FIG. 4, steam is generated after the water temperature in the steam generating container 71 reaches 100 ° C. in about 31 seconds from the start of cooking.

  In contrast, in the heating cooker according to the first embodiment, the preheating mode control unit 100b heats the steam generating container 71 with the steam generating heater 73 of the steam generating apparatus 70 to supply water in the steam generating container 71. A preheating mode in which the temperature is kept at 80 ° C. set in advance is set. In this case, as shown in FIG. 5, the water temperature in the steam generation container 71 reaches 100 ° C. in about 12 seconds from the start of cooking, and steam is generated.

  Thus, in the standby state before the start of cooking, the preheating mode controller 100b sets the preheating mode in which the water stored in the steam generating container 71 is heated and kept at 80 ° C., so that steam is used next. When the cooked cooking is started, the rise of steam generation from the steam generator 70 is accelerated, and steam is quickly supplied into the heating chamber 2.

  In the preheating mode, it is desirable that the temperature of the water in the steam generation container 71 is 50 ° C. to 80 ° C.

  In this cooking device, selection as to whether or not to set the preheating mode by the preheating mode control unit 100b can be set by operating the operation panel (shown in FIG. 1).

  In the cooking device having the above-described configuration, the water supply unit (25, 26, 40, 40) is placed in the steam generation container 71 of the steam generation device 70 in the standby state before the start of cooking by the preheating mode control unit 100b of the control device 100. 43, 44, 125, 140), and a preheating mode in which the steam generating container 71 is heated by the steam generating heater of the steam generating device 70 and kept at 80 ° C. is set. Thereby, the time from the start of cooking to the generation of steam can be shortened, and the cooking time using steam can be shortened.

  In addition, in a commercial cooking device that is used frequently and has many short-time cooking menus, cooking time can be shortened and usage efficiency can be improved. The characteristics of are not impaired.

[Second Embodiment]
FIG. 6 shows a control block diagram of the heating cooker according to the second embodiment of the present invention. The cooking device according to the second embodiment has the same configuration as that of the heating cooking device according to the first embodiment except for the control device 200, and FIGS. Moreover, in FIG. 6, the same reference number is attached | subjected to the component same as the heating cooker of 1st Embodiment.

  As shown in FIG. 6, the cooking device includes a control device 200 including a microcomputer and an input / output circuit. The control device 200 includes an upper heater 20, an intermediate heater 21, a lower heater 22, a steam generation heater 73, a circulation fan motor 56, a circulation damper motor 59, an operation panel 9, a humidity sensor 53, and an interior temperature sensor 76. The water level sensor 75, the water supply / drainage pump 25, the magnetron 4 and the like are connected.

  The control device 100 is based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, etc., and the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, and the circulation. The fan motor 56, circulation damper motor 59, water supply / drainage pump 25, magnetron 4 and the like are controlled.

  Moreover, the said control apparatus 200 has the heating control part 200a, the preheating mode control part 200b, the preheating mode time zone setting part 200c, and the time measuring part 200d.

  The heating control unit 200a performs heating cooking by controlling the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, the magnetron 4, and the like.

  In the standby state before the start of cooking, the preheating mode control unit 200b supplies water into the steam generating container 71 of the steam generating apparatus 70, heats the steam generating container 71 with the steam generating heater 73, and generates steam. The temperature of the water in the generation container 71 is kept at a preset temperature (80 ° C. in this embodiment) (preheating mode).

  The preheating mode time zone setting unit 200c selects a time zone in which the frequency of cooking using steam is high based on the history of the cooking performed and the time measured by the time measuring unit 200d when the cooking is performed. Estimate and set the estimated time zone as the time zone to be in the preheating mode.

  The timekeeping unit 200d keeps time.

  In the cooking device having the above configuration, the control device 200 causes the steam to be generated by setting the time zone in which the preheating mode is set to a time zone where the frequency of heating cooking using steam is high by the preheating mode time zone setting unit 200c. Energy saving can be achieved without using the preheating mode in a time zone in which the frequency of cooking used is low.

  Moreover, since the time zone which should be set to preheating mode is set by the preheating mode time zone setting part 200c of the control apparatus 200 based on the time measured by the said time measuring part 200d and the history of cooking, according to the use condition The preheat mode can be operated.

  The timekeeping unit 200d measures the date and time, and the preheating mode time zone setting unit 200c of the control device 200 uses the preheating mode based on the date and time and the cooking history recorded by the timekeeping unit 200d. The time zone to be set may be set for each day of the week (or for each date). Thereby, the time zone of the optimal preheating mode according to a lifestyle can be set. In addition, the date and time, cooking history, etc. are transmitted to the server connected via the network, the preheating mode time zone is determined on the server side, and the preheating mode time zone is set in the cooking device. A command to be set may be transmitted.

  In the cooking device of the second embodiment, the time zone to be set to the preheating mode is set by the preheating mode time zone setting unit 200c based on the time measured by the timekeeping unit 200d and the history of cooking. The preheating mode time zone setting unit may set a time zone in advance.

  The heating cooker of the second embodiment has the same effect as the heating cooker of the first embodiment.

[Third Embodiment]
FIG. 7 shows a control block diagram of a heating cooker according to the third embodiment of the present invention. The heating cooker according to the third embodiment has the same configuration as that of the heating cooker according to the first embodiment except for the control device 300, and uses FIGS. Moreover, in FIG. 7, the same reference number is attached | subjected to the component same as the heating cooker of 1st Embodiment.

  As shown in FIG. 7, the heating cooker includes a control device 300 including a microcomputer and an input / output circuit. The control device 300 includes an upper heater 20, an intermediate heater 21, a lower heater 22, a steam generating heater 73, a circulation fan motor 56, a circulation damper motor 59, an operation panel 9, a humidity sensor 53, and an internal temperature sensor 76. The water level sensor 75, the water supply / drainage pump 25, the magnetron 4 and the like are connected.

  The control device 300 is based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, etc., and the upper heater 20, the intermediate heater 21, the lower heater 22, the steam generating heater 73, the circulation. The fan motor 56, circulation damper motor 59, water supply / drainage pump 25, magnetron 4 and the like are controlled.

  The control device 300 includes a heating control unit 300a, a preheating mode control unit 300b, and a cooling control unit 300c.

  The heating control unit 300a performs cooking by controlling the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, the magnetron 4, and the like.

  In the standby state before the start of cooking, the preheating mode control unit 300b supplies water into the steam generation container 71 of the steam generation apparatus 70, heats the steam generation container 71 with the steam generation heater 73, and generates steam. The temperature of the water in the generation container 71 is kept at a preset temperature (80 ° C. in this embodiment) (preheating mode).

  Further, the cooling control unit 300c supplies water from the water supply tank 26 into the steam generation container 71 of the steam generation device 70 when the cooking using the steam is completed.

  FIG. 8 shows the change in the water temperature of the comparative example, and FIG. 9 shows the change in the water temperature at the end of the heating cooking in this heating cooker. 8 and 9, the power of the steam generating heater 73 is 1350W.

  In the comparative example of FIG. 8, the steam generation heater 73 is turned off 10 seconds after the end of the cooking using steam, and the water temperature in the steam generation container 71 gradually decreases. In this case, the temperature is less than 80 ° C. 70 seconds after the end of the cooking, but during this time, the steam flows from the steam generating container 71 into the heating chamber 2.

  That is, in this comparative example, it takes about 60 seconds from when the steam generating heater 73 is turned off until the water temperature becomes 80 ° C. or lower.

  On the other hand, in the cooking device of the second embodiment, when cooking using steam is completed, as shown in FIG. 9, water is supplied from the water supply tank 26 at the same time when the steam generating heater 73 is turned off. At this point, the water temperature in the steam generation container 71 is rapidly reduced to about 80 ° C. Here, the amount of boiling water in the steam generation container 71 before water is charged is 15 ml, and 30 ml of water is charged from the water supply tank 26. In this case, the water temperature in the steam generation container 71 can be set to 80 ° C. or less by increasing the amount of water to be added.

  Conventionally, even if an attempt is made to color the food to be cooked (object to be heated) by heating by the heating unit (20, 21, 22) after heating using steam, the steam supplied to the heating chamber 2 is sufficient. I couldn't color it. In addition, there is a problem in that water drops adhere to the surface of the cooked food after it is cooked, resulting in a loss of taste.

  On the other hand, according to the cooking device of the third embodiment, when cooking using steam is completed, the control device 300 supplies water from the water supply tank 26 into the steam generation container 71 of the steam generation device 70. Therefore, the temperature of the water in the steam generation container 71 of the steam generation device 70 can be lowered so that the steam from the steam generation device 70 is not supplied into the heating chamber 2 after the end of cooking. Thereby, after heating using steam, it is possible to easily color the cooked food (object to be heated) by heating by the heating unit (20, 21, 22). Moreover, a water droplet adheres to the surface of the cooked food after cooking, and it does not get spoiled.

  The heating cooker of the said 3rd Embodiment has an effect similar to the heating cooker of 1st Embodiment.

  In the third embodiment, when cooking using steam is completed, a fixed amount (30 milliliters) of water is introduced into the steam generation container 71. Water may be continuously charged into the generation container. In this case, the on / off time of the water supply / drainage pump is limited to a predetermined time or less so that water does not overflow from the inside of the steam generation container.

[Fourth Embodiment]
FIG. 10: has shown the schematic diagram for demonstrating the structure of the principal part of the heating cooker of 4th Embodiment of this invention. The heating cooker of the fourth embodiment has the same configuration as the heating cooker of the first embodiment except for the water supply pump 125, the drainage pump 225, and the drainage tube 240, and uses FIGS. 1 and 2. . Moreover, in FIG. 10, the same reference number is attached | subjected to the component same as the heating cooker of 1st Embodiment.

As shown in FIG. 10, the cooking device of the fourth embodiment is
The water supply pump 125 squeezes an elastically deformable water supply tube 140 made of silicon rubber or the like with a roller (not shown), and flows the water in the water supply tank 26 to the steam generator 70.

  Further, the drainage pump 225 squeezes an elastically deformable drainage tube 240 made of silicon rubber or the like with a roller (not shown), and causes the water in the steam generator 70 to flow into the water supply tank 26. One end of the drain tube 240 is connected to the bottom 71 a of the steam generation container 71, and the other end of the drain tube 240 is connected to the upper portion of the water supply tank 26.

  The water supply tank 26 has a water supply tank main body 41 and a communication pipe 42. One end of the communication pipe 42 is located in the water supply tank body 41, while the other end of the communication pipe 42 is located outside the water supply tank 26. When the water supply tank 26 is accommodated in the tank cover 43, the other end of the communication pipe 42 is connected to the water supply tube 140 through the tank joint 44. That is, the inside of the water supply tank main body 41 communicates with the inside of the steam generator 70 via the communication pipe 42 and the like.

  The water supply pump 125, the water supply tank 26, the water supply tube 140, the tank cover 43, and the tank joint portion 44 constitute a water supply portion.

  FIG. 11 shows a control block diagram of the cooking device. The heating cooker according to the third embodiment has the same configuration as that of the heating cooker according to the first embodiment except for the control device 400, the feed water pump 125, and the drainage pump 225, and uses FIGS. . Moreover, in FIG. 10, the same reference number is attached | subjected to the component same as the heating cooker of 1st Embodiment.

  As shown in FIG. 10, the heating cooker includes a control device 400 including a microcomputer and an input / output circuit. The control device 400 includes an upper heater 20, an intermediate heater 21, a lower heater 22, a steam generation heater 73, a circulation fan motor 56, a circulation damper motor 59, an operation panel 9, a humidity sensor 53, and an interior temperature sensor 76. The water level sensor 75, the water supply / drainage pump 25, the magnetron 4 and the like are connected.

  The control device 400 is based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, etc., and the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, the circulation. The fan motor 56, circulation damper motor 59, water supply / drainage pump 25, magnetron 4 and the like are controlled.

  The control device 400 includes a heating control unit 400a, a preheating mode control unit 400b, and a cooling control unit 400c.

  The heating control unit 400a performs cooking by controlling the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, the magnetron 4, and the like.

  In the standby state before the start of cooking, the preheating mode control unit 400b supplies water into the steam generating container 71 of the steam generating device 70, heats the steam generating container 71 with the steam generating heater 73, and generates steam. The temperature of the water in the generation container 71 is kept at a preset temperature (80 ° C. in this embodiment) (preheating mode).

  In addition, when the cooking using steam is finished, the cooling control unit 400c drives the water supply pump 125 to supply water from the water supply tank 26 into the steam generation container 71, and at the same time drives the drain pump 225 to generate the steam generation container. The hot water in 71 is discharged to the water supply tank 26.

  In the heating cooker having the above configuration, when cooking using steam is completed, the water supply pump 125 and the drain pump 225 are simultaneously driven to drain water from the steam generation container 71 and to supply water to the steam generation container 71. Are simultaneously performed, the steam generation container 71 and the hot water in the steam generation container 71 can be efficiently cooled.

  Further, when cooking using steam is completed, the controller 400 supplies water from the water supply tank 26 into the steam generating container 71 while discharging hot water in the steam generating container 71 of the steam generating apparatus 70, so that steam is generated. The temperature of the water in the container 71 and the steam generation container 71 can be quickly lowered.

  The heating cooker of the fourth embodiment has the same effect as the heating cooker of the first embodiment.

  In the fourth embodiment, the hot water in the steam generation container 71 is discharged by the drain pump 225. However, the hot water in the steam generation container 71 may be discharged downward through the drain valve using a drain valve or the like.

  In the first to fourth embodiments, the steam supply port or the steam supply passage from the steam generator may be closed using a damper or the like at the end of cooking.

  In the first to fourth embodiments, the microwave oven having a heating function using steam has been described. However, the present invention may be applied to an oven or a microwave oven having a heating function using steam.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the first to fourth embodiments, and various modifications can be made within the scope of the present invention. For example, what combined suitably the content described in the said 1st-4th embodiment is good also as one Embodiment of this invention.

  The present invention and the embodiment are summarized as follows.

The cooking device of this invention is
A heating cabinet 2 for storing an object to be heated;
A heating section (20, 21, 22) for heating an object to be heated in the heating chamber 2;
A steam generator 70 for generating steam to be supplied to the heating chamber 2;
A water supply unit (25, 26, 40, 43, 44, 125, 140) for supplying water to the steam generator 70;
A controller 100, 200, 300, 400 for controlling the heating unit (20, 21, 22), the steam generator 70 and the water supply unit (25, 26, 40, 43, 44, 125, 140). Prepared,
The control devices 100, 200, 300, 400 are
In a standby state before the start of cooking, water is supplied from the water supply unit (25, 26, 40, 43, 44, 125, 140) into the steam generation container 71 of the steam generator 70, and the steam is generated. It has a preheating mode control unit 100b that sets a preheating mode in which the steam generating container 71 is heated by the steam generating heater of the apparatus 70 and the water in the steam generating container 71 is kept at a preset temperature. Features.

  According to the above configuration, the preheating mode control unit 100b of the control device 100, 200, 300, 400 causes the water supply unit (25, 26, 40, 43) in the steam generation container 71 in the standby state before the start of cooking. , 44, 125, 140), and the steam generation vessel 71 is heated by the steam generation heater 73 of the steam generation device 70 to keep the temperature at a preset temperature. Thereby, the time from the start of cooking to the generation of steam can be shortened, and the cooking time using steam can be shortened.

Moreover, in the heating cooker of one embodiment,
In the control device 200, a time zone in which the preheating mode is set is set.

  According to the above-described embodiment, for example, the control device 200 has a low frequency of cooking using steam by setting the time zone in which the preheating mode is set to a time zone in which cooking frequency using steam is high. Energy saving can be achieved without setting the time zone to the preheating mode.

Moreover, in the heating cooker of one embodiment,
The control device 200 includes:
A clock unit 200d that clocks at least the time of the date and time;
Preheating mode time zone for setting the time zone to be set to the preheating mode based on the history of the performed cooking and at least the time of the date and time timed by the time measuring unit 200d when the cooking is performed. It has a setting unit 200c.

  According to the above embodiment, based on at least the time and the cooking history of the date and time timed by the time measuring unit 200d, the time to be set to the preheating mode by the preheating mode time zone setting unit 200c of the control device 200. Since the belt is set, the preheating mode can be operated according to the use situation.

Moreover, in the heating cooker of one embodiment,
The control devices 300 and 400 include:
When cooking using the steam from the steam generator is completed, water is supplied into the steam generation container 71 from the water supply unit (25, 26, 40, 43, 44, 125, 140).

  According to the above embodiment, when the cooking using the steam from the steam generating device is completed, the control devices 300 and 400 are configured so that the steam is supplied from the water supply unit (25, 26, 40, 43, 44, 125, 140). Since the water is supplied into the generating container 71, the temperature of the water in the steam generating container 71 can be lowered so that the steam from the steam generating device 70 is not supplied into the heating chamber 2 after the end of the cooking. Thereby, for example, it becomes easy to color the object to be heated by heating by the heating unit (20, 21, 22) after heating using steam.

Moreover, in the heating cooker of one embodiment,
The control device 400 includes:
When the cooking using the steam from the steam generator is completed, the steam generator 71 is discharged from the water supply unit (26, 43, 44, 125, 140) while discharging hot water in the steam generator 71. Supply water inside.

  According to the above embodiment, when the cooking using the steam from the steam generating device is completed, the controller 400 causes the water supply unit (26, 43, 44, 125) while discharging the hot water in the steam generating container 71 by the control device 400. 140), the temperature of the water in the steam generation container 71 and the steam generation container 71 can be quickly lowered.

Moreover, in the heating cooker of one embodiment,
Any one of the above cooking devices is a commercial cooking device.

  According to the above embodiment, by applying the present invention to a business-use heating cooker that is frequently used, for business use with many short-time cooking menus, cooking time can be shortened and usage efficiency can be improved. It does not take much time to generate steam and the characteristics of cooking using steam are not impaired.

Moreover, in the heating cooker of this invention,
A heating cabinet 2 for storing an object to be heated;
A heating section (20, 21, 22) for heating an object to be heated in the heating chamber 2;
A steam generator 70 for generating steam to be supplied to the heating chamber 2;
A water supply unit (25, 26, 40, 43, 44, 125, 140) for supplying water to the steam generator 70;
The heating unit (20, 21, 22), the steam generator 70 and the control device 300, 400 for controlling the water supply unit (25, 26, 40, 43, 44, 125, 140),
When the cooking using the steam from the steam generating device 70 is completed, the control devices 300 and 400 are connected to the steam generating device from the water supply unit (25, 26, 40, 43, 44, 125, 140). Water is supplied into 70 steam generation containers 71.

  According to the above configuration, when cooking using the steam from the steam generator 70 is completed, steam is generated from the water supply unit (25, 26, 40, 43, 44, 125, 140) by the control device 300, 400. By supplying water into the container 71, the temperature of the water in the steam generating container 71 of the steam generating apparatus 70 can be lowered so that the steam from the steam generating apparatus 70 is not supplied into the heating chamber 2 after the end of cooking. . Thereby, for example, it becomes easy to color the object to be heated by heating by the heating unit (20, 21, 22) after heating using steam. Moreover, a water droplet adheres to the surface of the cooked food after cooking, and it does not get spoiled.

DESCRIPTION OF SYMBOLS 1 ... Main body casing 2 ... Heating chamber 3 ... Door 4 ... Magnetron 5 ... Outlet 6 ... Dew receptacle 8 ... Handle 9 ... Operation panel 10 ... Color liquid crystal display part 11 ... Button group 15 ... Heated object 18 ... Circulation duct 19 ... Circulating fan 20 ... Upper heater 21 ... Middle heater 22 ... Lower heater 23 ... Circulating damper 25 ... Water supply / drainage pump 26 ... Water supply tank 27 ... Suction port 28 ... Upper outlet 29 ... First rear outlet 30 ... Second rear outlet 31 ... Third rear outlet 35 ... Steam tube 36 ... Steam pipe 37 ... Steam supply port 40 ... Water supply / drain tube 41 ... Water supply tank body 42 ... Communication pipe 43 ... Tank cover 44 ... Tank joint 53 ... Humidity sensor 56 ... Circulation fan Motor 59 ... circulation damper motor 70 ... steam generator 71 ... steam generation vessel 72 ... lid portion 73 ... steam generation heater 75 ... water level sensor 76 ... inside temperature sensors 91,9 2 ... Cooking trays 100, 200, 300, 400 ... Control devices 100a, 200a, 300a, 400a ... Heating control units 100b, 200b, 300b, 400b ... Preheating mode control units 300c, 400c ... Cooling control units

Claims (7)

A heating cabinet for storing an object to be heated;
A heating unit for heating an object to be heated in the heating chamber;
A steam generator for generating steam to be supplied to the heating chamber;
A water supply unit for supplying water to the steam generator;
A controller for controlling the heating unit, the steam generator, and the water supply unit;
The control device
In a standby state before the start of cooking, water is supplied from the water supply unit into the steam generating container of the steam generating apparatus, and the steam generating container is heated by the steam generating heater of the steam generating apparatus to A cooking device comprising a preheating mode control unit configured to set a preheating mode in which water in the generation container is kept at a preset temperature. The heating cooker according to claim 1, wherein
The cooking device according to claim 1, wherein the control device has a time zone in which the preheating mode is set. The cooking device according to claim 2,
The control device
A timekeeping unit that measures at least the time of the date and time;
Preheating mode time zone setting for setting the time zone to be set to the preheating mode based on the history of performed cooking and at least the time of the date and time timed by the timekeeping unit when the cooking is performed A heating cooker having a portion. In the heating cooker according to any one of claims 1 to 3,
The control device
When the cooking using the steam from the steam generating apparatus is completed, water is supplied from the water supply unit into the steam generating container. The cooking device according to claim 4, wherein
The control device
A heating cooker characterized in that when cooking using steam from the steam generating device is completed, water is supplied into the steam generating container from the water supply unit while discharging hot water in the steam generating container.   The cooking device according to any one of claims 1 to 5, wherein the cooking device is a commercial cooking device. A heating cabinet for storing an object to be heated;
A heating unit for heating an object to be heated in the heating chamber;
A steam generator for generating steam to be supplied to the heating chamber;
A water supply unit for supplying water to the steam generator;
A controller for controlling the heating unit, the steam generator, and the water supply unit;
When the cooking using the steam from the steam generator is completed, the control device feeds water from the water supply unit into the steam generating container of the steam generator.

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