JP4334201B2 - Cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooking device that performs cooking of an object to be cooked. In particular, the present invention relates to a heating cooker that cooks an object to be cooked with overheated steam at 100 ° C or higher.
[0002]
[Prior art]
2. Description of the Related Art A heating cooker is well known that heats cooked foods and the like using superheated steam of 100 ° C. or higher obtained by further heating saturated steam. In this heating cooker, saturated steam is generated with water supplied from a water supply tank or the like by a saturated steam generator, and the saturated steam is further heated by a superheated steam generator to generate superheated steam. This superheated steam is supplied into a heating chamber containing an object to be cooked, and cooking is performed. When the temperature in the heating chamber reaches a predetermined temperature corresponding to the object to be cooked and the heating time suitable for the object to be cooked has elapsed, the supply of superheated steam is stopped and cooking is completed.
[0003]
By using superheated steam, it is possible to prevent moisture from evaporating in the object to be cooked and cook with a moist finish. In addition, since the superheated steam has a higher heat transfer coefficient than air, the cooking time can be shortened, and the heating chamber can be brought into an oxygen-free state, and oxidation of the object to be cooked can be reduced.
[0004]
As for the structure of a conventional heating cooker using superheated steam, one that directly supplies superheated steam into a heating chamber has been proposed (see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-9-4849 [0006]
[Problems to be solved by the invention]
Naturally, the temperature of the superheated steam generated by the superheated steam generator is higher than the temperature in the heating chamber. In the heating cooker as described in Patent Document 1, when superheated steam is supplied into the heating chamber, it is overheated at the inner surface of the heating chamber having a relatively low temperature and around the discharge port of the superheated steam, particularly at the discharge nozzle and the object to be cooked. The steam cools and condenses. If the water droplets generated on the inner surface of the heating chamber or the discharge nozzle are scattered by this condensation and adhere to the food, or if the water is condensed on the surface of the food, the food will not be heated sufficiently. As a result, the surface of the film becomes watery. Further, the condensation on the inner surface of the heating chamber is very unsanitary, which causes dirt, and increases the time for cleaning.
[0007]
The present invention has been made in view of the above points, and in a heating cooker that performs cooking of an object to be cooked with superheated steam, the superheated steam is cooled around the discharge port of the superheated steam, the inner surface of the heating chamber, and the food to be cooked. An object of the present invention is to provide a heating cooker that suppresses condensation and exhibits excellent heating efficiency with superheated steam.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a heating chamber in which an object to be cooked is accommodated, and a hot air generator provided outside the heating chamber that supplies hot air that can be cooked by itself to the heating chamber. A heating device that sucks air in the heating chamber and sends it to the hot air generator, and a superheated steam generator that heats water to generate superheated steam, and heats the food to be cooked with the superheated steam. In the cooker, the hot air generating device located outside the heating chamber includes a hot air blowing portion that opens to the heating chamber, and a discharge port of the superheated steam discharge nozzle is provided in the device inside the hot air blowing portion. The superheated steam was arranged in a direction to blow out toward the opening of the hot air blowing section .
[0009]
According to this configuration, the temperature of the discharge port around the superheated steam can be maintained at a higher temperature than the air temperature inside the heating chamber. Moreover, since the superheated steam is efficiently mixed with the hot air, the high temperature is maintained even if it is sent into the heating chamber. As a result, it is possible to suppress dew condensation due to cooling of the superheated steam around the outlet of the superheated steam, the inner surface of the heating chamber, and the object to be cooked. Furthermore, since the temperature drop of the superheated steam itself is suppressed, it is possible to realize excellent heating efficiency by the superheated steam.
[0010]
In the present invention, the hot air generating device has a heater disposed in the internal space of the hot air generating device so as to face the hot air blowing portion, and the discharge port of the superheated steam discharge nozzle is the hot air generating device. It arrange | positioned so that it might be located in the said heater vicinity. Furthermore, the discharge port may be provided on the back side of the heater.
[0011]
According to this configuration, the superheated steam can be further heated, and the superheated steam having a temperature higher than that of the superheated steam generated by the superheated steam generator can be generated. As a result, heating at a higher temperature is possible, and efficient cooking is possible.
[0012]
In the present invention, the superheated steam discharge nozzle is disposed in a lateral direction of the hot air generator.
[0014]
In the present invention, a steam deflecting plate is provided in the vicinity of the discharge port for the superheated steam.
[0015]
According to this configuration, the superheated steam can be prevented from directly hitting the object to be cooked, and the superheated steam can be diffused and sent to the area around the object to be cooked. As a result, it is possible to reduce heating unevenness of the object to be cooked. It is also possible to prevent unnecessary scorching.
[0016]
In the present invention, in the superheated steam generator, the discharge speed of the superheated steam is improved by reducing the diameter of the discharge port of the superheated steam.
[0017]
According to this configuration, the superheated steam can reach the object to be cooked. Moreover, a to-be-cooked item can be heated locally. As a result, cooking time can be shortened and power consumption can be reduced, and finishing can be realized in which a desired portion of the object to be cooked is intentionally burnt.
[0018]
In the present invention, the saturated steam generator and the superheated steam generator are integrally formed.
[0019]
According to this configuration, since the surface area of the component is reduced, heat dissipation can be reduced. In addition, since it is not necessary to provide these as separate devices, the number of parts can be reduced. As a result, the energy efficiency of the cooking device can be improved. In addition, the cost can be reduced, the structure can be simplified, and the space occupied by the parts can be reduced.
[0020]
Moreover, in this invention, the said hot cooking apparatus shall be equipped with the said several hot-air generator.
[0021]
According to this configuration, hot air and superheated steam can be applied to the object to be cooked from a plurality of different directions. Moreover, hot air and superheated steam can be sent to a wide range in the heating chamber in a shorter time. As a result, the object to be cooked can be efficiently cooked without uneven heating. In addition, since uneven heating in the entire heating chamber can be suppressed, cooking can be efficiently performed even when an object to be cooked is placed over a wide range in the heating chamber. And it can respond to various to-be-cooked things and various cooking methods.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
FIG. 1 is a front view of a heating cooker according to the first embodiment of the present invention, and is represented by a perspective method. FIG. 2 is a schematic cross-sectional view of the heating cooker shown in FIG. The heating cooker 1 has a rectangular parallelepiped casing 10. A rectangular parallelepiped heating chamber 11 is provided inside the housing 10. The upper and lower sides of the heating chamber 11 are constituted by a ceiling wall 12 and a bottom wall 13, and three sides of the four circumferences are constituted by a back inner side wall 14, a left inner side wall 15, and a right inner side wall 16. The remaining one of the four sides is constituted by a door 17 that can be freely opened and closed. Each wall portion of the heating chamber 11 and the door 17 are provided with heat insulation measures.
[0024]
A blower 20 is installed on the outside of the back inner side wall 14. The air blower 20 arrange | positions the fan 22 in the fan casing 21, and rotates this fan 22 with a motor (not shown). The fan casing 21 is connected to an upper hot air generator 23 provided outside the ceiling wall 12.
[0025]
The upper hot air generator 23 has an upper hot air blowing section 30 that opens toward the heating chamber 11. Further, a suction part 31 of the blower 20 is provided on the inner wall 14 of the heating chamber 11. The upper hot air blowing section 30 and the suction section 31 are formed of a set of small holes.
[0026]
An upper heater 40 is disposed in the upper hot air generator 23. An overheated steam generator 41 is disposed outside the upper hot air generator 23 and above the upper heater 40. The superheated steam generator 41 has a superheated steam discharge nozzle 42 and a steam valve 43. The superheated steam discharge nozzle 42 is disposed from above the upper hot air generator 23 so as to discharge superheated steam into the upper hot air generator 23. At its tip, a superheated steam discharge port 42a is provided. Note that the superheated steam discharge nozzle 42 may be disposed laterally from the side wall of the upper hot air generator 23. The superheated steam generator 41 is connected to a saturated steam generator 45 that generates saturated steam through a steam supply pipe 44. The aforementioned steam valve 43 adjusts the amount of saturated steam from the saturated steam generator 45. A water supply device 47 is connected to the saturated steam generator 45 via a water supply pipe 46, and the amount of water supply is adjusted by a water supply valve 48.
[0027]
On the outside of the right inner wall 16, there is a control unit for controlling the operation of the blower 20, the upper hot air generator 23, the superheated steam generator 41, the saturated steam generator 45, the water supply device 47, and the heating cooker 1 (FIG. (Not shown) is arranged. An operation panel 18 for inputting instructions to the control unit is disposed on the outer front surface of the right inner wall 16.
[0028]
On the bottom wall 13, a turntable 60 for placing an object to be cooked 70 is disposed. On the turntable 60, support means (not shown) such as a grill or a rack is placed according to the type of the object 70 to be cooked.
[0029]
The operation of the heating cooker 1 is as follows. First, the door 17 is opened, and the turntable 60 is placed on a support means such as a grill or a rack that is suitable for the type of the object 70 to be cooked. The cooking object 70 is placed directly or in a state where it is placed in the container, and the door 17 is closed.
[0030]
After closing the door 17, cooking conditions are input from the operation panel 18. A control unit (not shown) selects an optimal one from a plurality of pre-programmed cooking methods based on the input cooking conditions. And the air blower 20, the upper hot air generator 23, the superheated steam generator 41, the saturated steam generator 45, and the water supply apparatus 47 are driven, and heating cooking is started.
[0031]
The blower 20 sucks air in the heating chamber 11 from the suction part 31 and sends it out to the upper hot air generator 23. The upper heater 40 provided in the upper hot air generator 23 turns the air discharged from the blower 20 into hot air and blows it out from the upper hot air blowing section 30. Here, the superheated steam discharge nozzle 42 is disposed so as to discharge superheated steam into the upper hot air generator 23 (see FIG. 2). Therefore, since the temperature around the superheated steam discharge nozzle 42 can be maintained at a temperature higher than the temperature of the heating chamber 11, it is possible to prevent the superheated steam from being cooled and condensed. Further, since the superheated steam is discharged into the hot air stream, it is efficiently mixed with the hot air, so that the high temperature is maintained even if it is sent into the heating chamber 11.
[0032]
FIG. 3 is a schematic cross-sectional view showing a heating cooker according to the second embodiment of the present invention. The outline of the configuration is the same as that of the first embodiment.
[0033]
The superheated steam discharge nozzle 42 is disposed at a location where the superheated steam discharge port 42a is closest to the upper heater 40 from the upper hot air generator 23 toward the lower side. In the present embodiment, the superheated steam can be further heated, and the superheated steam having a temperature higher than that of the superheated steam generated by the superheated steam generator 41 can be generated. In addition, the superheated steam discharge nozzle 42 may be arrange | positioned toward the horizontal direction from the side wall in the upper hot air generator 23 like 1st Embodiment.
[0034]
FIG. 4 is a schematic cross-sectional view showing a heating cooker according to the third embodiment of the present invention. The outline of the configuration is the same as that of the first and second embodiments.
[0035]
The superheated steam discharge nozzle 42 penetrates the upper hot air generation device 23 from the upper side to the lower side of the upper hot air generation device 23, and the superheated steam discharge port 42 a is disposed in the vicinity of the upper hot air blowing unit 30. In the present embodiment, since the discharged superheated steam is blown out so that the hot air covers from above, it is possible to efficiently mix the superheated steam with the hot air and maintain the high temperature, and the superheated steam discharge port 42a can be directly exposed to hot air. Note that the superheated steam discharge nozzle 42 may be disposed laterally from the side wall in the upper hot air generator 23. Further, the superheated steam discharge nozzle 42 may be disposed so that the superheated steam discharge port 42a is located on either the upper hot air generator 23 side of the upper hot air blowing section 30 or the heating chamber 11 side.
[0036]
FIG. 5 is a schematic cross-sectional view showing a heating cooker according to the fourth embodiment of the present invention. The outline of the configuration is the same as that of the first to third embodiments.
[0037]
The superheated steam discharge nozzle 42 is disposed at a location where the superheated steam discharge port 42a is closest to the upper heater 40 from the upper hot air generator 23 toward the lower side. And the vapor | steam deflection | deviation plate 49 is arrange | positioned horizontally in the vicinity lower vicinity of the superheated steam discharge port 42a. In the present embodiment, it is possible to prevent the superheated steam from directly hitting the object 70 to be cooked, and to diffuse the superheated steam into the area around the object 70 to be cooked. In addition, the superheated steam discharge nozzle 42 may be arrange | positioned toward the horizontal direction from the side wall of the upper hot air generator 23 similarly to 1st Embodiment. Along with this, the steam deflecting plate 49 is arranged vertically.
[0038]
FIG. 6 is a partially enlarged view showing the vicinity of the superheated steam outlet of the heating cooker according to the fifth embodiment of the present invention. As shown in the figure, the superheated steam discharge nozzle 42 is configured to reduce the diameter of the superheated steam discharge port 42a. And the superheated steam blowing part 30a is provided in the upper hot air blowing part 30 just under the superheated steam discharge port 42a. Thereby, the discharge speed of superheated steam is improved. Therefore, the superheated steam is energized, and the superheated steam can be sent into the heating chamber 11 in a short time. Moreover, since superheated steam reaches the to-be-cooked object 70 without weakening the momentum, the to-be-cooked object 70 can be heated locally.
[0039]
FIG. 7: is a schematic sectional drawing which shows the heating cooker which concerns on the 6th Embodiment of this invention. The outline of the configuration is the same as that of the first embodiment.
[0040]
An integrated superheated steam generator 50 in which the saturated steam generator 45 and the superheated steam generator 41 of the first embodiment shown in FIGS. 1 and 2 are integrated is arranged outside the upper hot air generator 23 of the upper heater 40. Arranged above. Similar to the superheated steam generator 41, the integrated superheated steam generator 50 is provided with a superheated steam discharge nozzle 42 and a steam valve 43. A water supply device 47 is connected via a water supply pipe 46, and the water supply amount is adjusted by a water supply valve 48. In the integrated superheated steam generator 50, saturated steam is generated from water, and then superheated steam is generated. The steam valve 43 adjusts the amount of saturated water vapor generated in the apparatus. In the present embodiment, since the heat dissipation can be reduced by reducing the surface area of the component that generates steam, the energy efficiency of the cooking device can be improved. In addition, the reduction in the number of parts makes it possible to reduce costs and simplify the structure.
[0041]
FIG. 8 is a front view of a heating cooker according to the seventh embodiment of the present invention, which is expressed in perspective. FIG. 9 is a schematic cross-sectional view of the heating cooker shown in FIG. The outline of the configuration is the same as that of the first to fourth embodiments.
[0042]
The fan casing 21 is a two-way branch type, and is connected to an upper hot air generator 23 provided outside the ceiling wall 12 and a side hot air generator 24 provided outside the left inner wall 15. The side hot air generator 24 has a side hot air blowing part 32 that opens toward the heating chamber 11. The side hot air blowing section 32 is composed of a set of small holes.
[0043]
A lateral heater 51 is disposed in the side hot air generator 24. An overheated steam generator 41 is disposed on the left side of the horizontal heater 51 outside the side hot air generator 24. A saturated steam generator 45 is disposed above the side hot air generator 24. The configuration and connection of these devices are the same as those provided above the upper hot air generator 23.
[0044]
The blower 20 sucks air in the heating chamber 11 from the suction part 31 and discharges it to the upper hot air generator 23 and the side hot air generator 24. The upper heater 40 and the lateral heater 51 provided in the upper hot air generator 23 and the side hot air generator 24 convert the air discharged from the blower 20 into hot air and blow it out from the upper hot air outlet 30 and the side hot air outlet 32. . In the present embodiment, hot air and superheated steam can be applied to the object 70 from a plurality of different directions. As a result, the cooking object 70 can be efficiently cooked without uneven heating. Moreover, hot air and superheated steam can be sent to the wide range in the heating chamber 11 in a shorter time.
[0045]
Although the embodiment of the present invention has been described above, various modifications can be made without departing from the spirit of the present invention. For example, dielectric heating means can be combined with the present invention.
[0046]
【The invention's effect】
According to the above configuration of the present invention, since the superheated steam discharge nozzle is disposed in the hot air generator, the temperature around the superheated steam discharge port can be maintained at a temperature higher than the temperature of the heating chamber. it can. Further, since the superheated steam is discharged into the hot air stream, the superheated steam is efficiently mixed with the hot air, so that the high temperature is maintained even if it is sent into the heating chamber. As a result, it is possible to suppress dew condensation due to cooling of the superheated steam around the outlet of the superheated steam, the inner surface of the heating chamber, and the object to be cooked. Furthermore, since the temperature drop of the superheated steam itself is suppressed, it is possible to realize excellent heating efficiency by the superheated steam.
[0047]
In addition, by using a steam deflector or sending hot air from a plurality of directions into the heating chamber, it is possible to cook the food to be cooked efficiently without uneven heating. In addition, since uneven heating in the entire heating chamber can be suppressed, cooking can be efficiently performed even when an object to be cooked is placed over a wide range in the heating chamber. And it can respond to various to-be-cooked things and various cooking methods.
[Brief description of the drawings]
FIG. 1 is a front view of a heating cooker according to a first embodiment of the present invention, and is represented by a perspective view. FIG. 2 is a schematic cross-sectional view of the heating cooker shown in FIG. FIG. 4 is a schematic sectional view showing a cooking device according to the second embodiment of the present invention. FIG. 4 is a schematic sectional view showing a cooking device according to the third embodiment of the present invention. Fig. 6 is a schematic cross-sectional view showing a cooking device according to the present invention. Fig. 6 is a partially enlarged view showing the vicinity of the superheated steam outlet of the cooking device according to the fifth embodiment of the present invention. Fig. 7 is a sixth embodiment of the present invention. FIG. 8 is a schematic cross-sectional view showing a cooking device according to the present invention. FIG. 8 is a front view of the cooking device according to the seventh embodiment of the present invention and is expressed in perspective. FIG. 9 is a cooking device shown in FIG. Schematic cross-section [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating cooker 11 Heating chamber 20 Blower 23 Upper hot air generator 24 Side hot air generator 30 Upper hot air blowing part 31 Suction part 32 Side hot air blowing part 40 Upper heater 41 Superheated steam generator 42 Superheated steam discharge nozzle 42a Superheated steam discharge Outlet 45 Saturated steam generator 47 Water supply device 50 Integrated superheated steam generator 51 Horizontal heater

Claims (7)

A heating chamber in which the object to be cooked is stored, a hot air generator provided outside the heating chamber for supplying hot air that can be cooked by itself to the heating chamber, and generating hot air by sucking air in the heating chamber In a heating cooker comprising a blower to be fed into the apparatus and a superheated steam generator for heating water to generate superheated steam, and cooking the food to be cooked with the superheated steam,
The hot air generator located outside the heating chamber comprises a hot air blowing section that opens into the heating chamber,
A cooking device according to claim 1, wherein a discharge port of the superheated steam discharge nozzle is disposed in the apparatus inside the hot air blowing portion in a direction in which the superheated steam blows toward the opening of the hot air blowing portion .   The cooking device according to claim 1, wherein the hot air generating device has a heater disposed in an internal space of the hot air generator so as to face the hot air blowing portion.   The cooking device according to claim 2, wherein the discharge port of the discharge nozzle for the superheated steam is disposed so as to be positioned in the vicinity of the heater in the hot air generator.   The cooking device according to claim 3, wherein the vicinity of the heater is on the back side of the heater.   The cooking device according to any one of claims 1, 2, 3 and 4, wherein the superheated steam discharge nozzle is disposed in a lateral direction of the hot air generator.   The cooking device according to any one of claims 1 to 5, wherein the discharge speed of the superheated steam is improved by reducing the diameter of the discharge port of the discharge nozzle.   The superheated steam generator is an integrated heating device that integrates a saturated steam generator that changes water into saturated steam and a superheated steam generator that heats the saturated steam to generate superheated steam. The cooking device according to any one of claims 1 to 6.

Images