JP2006084082A - Superheated steam cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a superheated steam cooking device, capable of selectively heating an object to be heated by evenly and quickly supplying large amount of heat to the object to be heated, of which heating efficiency is high. <P>SOLUTION: Steam generated by a steam generator 50 is heated into superheated steam by a gas temperature rising heater 41. The superheated steam is sent to a heating chamber 20 from a side part exhalation hole 46 provided on a side face of the heating chamber 20. The object F to be heated is supported above a bottom surface, not touching the surface in the heating chamber 20, by a rack 22 and the side part exhalation hole 46 blows off the superheated steam to the object F to be heated as expected to reach a side face or a bottom face against which the heating chamber 20 faces. By directly colliding against the object F to be heated, or by reaching a back side of the object F to be heated, the superheated steam heating the object F to be heated is sucked by an external circulation route 3 and regenerated as superheated steam at a predetermined temperature and returns to the heating chamber 20 again. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a superheated steam cooker that performs cooking with superheated steam.

A number of proposals have been made so far for steam cookers that perform cooking using steam. Examples thereof can be seen in Patent Documents 1-4. Patent Document 1 describes a steam cooking apparatus that injects steam into a food tray. Patent Document 2 describes a cooking device that feeds superheated steam into an oven cabinet or converts the steam in the oven cabinet to superheated steam by radiation heating. Patent Document 3 describes a cooking device that supplies superheated steam to one or both of the entire heating chamber and the vicinity of the food. Patent Document 4 describes a superheated steam cooker in which superheated steam generated by a boiler is heated by follow-up heating means provided on the blow-out side of the blower means and is sent to the interior.
Japanese Utility Model Publication No. 3-67902 (full text specification, pages 4 to 6, pages 1 to 3) Japanese Patent Laid-Open No. 8-49854 (2nd to 3rd pages, FIG. 1, FIG. 2 to FIG. 8) Japanese Patent Laid-Open No. 11-141881 (page 3 to page 5, FIGS. 1 to 3) Japanese Patent Laid-Open No. 2001-263667 (Page 2 to Page 4, FIGS. 1 to 6)

  The steam cooking device described in Patent Document 1 is a business device, and supplies steam from a steam supply pipe to a plurality of food trays. This configuration is visually undesirable because the steam supply pipe is exposed in the heating chamber, and is not suitable for a domestic cooker. In addition, the steam injection range is limited by the shape of the steam supply pipe, and it is difficult to spray steam evenly on the object to be heated (food) in the heating chamber.

  The heating and cooking apparatus described in Patent Document 2 is configured to wrap and heat-cook the object to be heated with superheated steam, instead of injecting the superheated steam toward the object to be heated, and quickly heat a large amount of heat to the object to be heated. It is unsatisfactory to give.

  In the cooking device described in Patent Document 3, a pipe for supplying superheated steam to the vicinity of the food product protrudes into the heating chamber. Similar to Patent Document 1, this configuration is visually undesirable and is not suitable for a household cooking device. Moreover, the superheated steam injection range is spot-like, and it is difficult to spray superheated steam evenly on food.

  The superheated steam cooking apparatus described in Patent Document 4 also sends superheated steam to the interior through a plurality of internal circulation outlets and fills the interior with superheated steam instead of injecting the superheated steam toward the object to be heated. It is the structure which heat-cooks, and is unsatisfactory to give a large amount of heat to a to-be-heated material quickly.

  The present invention has been made in view of the above points, and its purpose is a visually preferred superheated steam cooker suitable for use at home, in which the entire heating chamber is not heated. In addition, an object of the present invention is to provide a superheated steam cooker with high heating efficiency, which can apply a large amount of heat uniformly and promptly to the object to be heated to intensively heat the object to be heated.

(1) In order to achieve the above object, the present invention is characterized in that the superheated steam cooker has the following configuration:
(A) Heating chamber for storing an object to be heated (b) Superheated steam generator (c) The superheated steam provided on the side surface of the heating chamber and supplied from the superheated steam generator is supplied to the heated chamber. Side fumaroles ejected in the direction of the heated object.

  According to this configuration, the superheated steam is ejected from the side fumaroles provided on the side surface of the heating chamber, and the steam supply pipe is not disposed at a low position in the heating chamber. Visually favorable. Further, since the superheated steam is ejected in the direction of the object to be heated, the superheated steam collides with the object to be heated vigorously, and the object to be heated is quickly heated. Unlike cooking by raising the temperature of the entire heating chamber, the basic concept is to heat the object to be heated by applying superheated steam directly to the object to be heated. Concentrate on cooking efficiently.

  (2) Further, in the superheated steam cooker configured as described above, the object to be heated is supported by a support unit in a state of floating from the bottom surface of the heating chamber, and the side fumaroles are directed toward the object to be heated. Thus, it is characterized in that superheated steam is ejected with a momentum reaching the opposite side or bottom of the heating chamber.

  According to this configuration, since the object to be heated is supported by the supporting means in a state of floating from the bottom surface of the heating chamber, the superheated steam can be caused to flow around the lower surface of the object to be heated. Since the superheated steam is ejected from the side fumaroles with a momentum reaching the opposite side or bottom of the heating chamber, the superheated steam that directly hits the heated object heats the heated object. Since the superheated steam that did not directly hit the surface rebounds on the opposite side surface or bottom surface and wraps around the back side of the object to be heated, the object to be heated is evenly heated up to the portion not facing the side air holes.

  (3) Moreover, the present invention is characterized in that in the superheated steam cooker configured as described above, a turntable for placing the support means is provided on the bottom surface of the heating chamber.

  According to this configuration, by turning the object to be heated on the turntable, the superheated steam can be directly applied to the entire periphery of the object to be heated, and the heating can be made more uniform.

  According to the present invention, the superheated steam is directly and vigorously applied to the object to be heated by ejecting the superheated steam in the direction of the object to be heated from the side blow holes provided on the side surface of the heating chamber, so that the heat energy is heated. You can concentrate on things and cook efficiently. In addition, after supporting the object to be heated in a state of floating from the bottom surface of the heating chamber by the support means, the superheated steam is ejected from the side fumaroles to reach the opposite side surface or bottom surface of the heating chamber. Use the fact that the superheated steam that did not directly hit the object rebounds on the opposite side or bottom surface and wraps around the back side of the object to be heated, evenly to the part of the object to be heated that does not face the side vent holes It can be heated uniformly.

  Hereinafter, 1st Embodiment of the superheated steam cooker by this invention is described based on FIGS. 1-14. 1 is an external perspective view, FIG. 2 is an external perspective view with the heating chamber door open, FIG. 3 is a front view with the heating chamber door removed, FIG. 4 is a basic structural diagram of the internal mechanism, and FIG. Is a basic structural view of the internal mechanism viewed from a direction perpendicular to FIG. 4, FIG. 6 is a top view of the heating chamber, FIG. 7 is a vertical sectional view of the steam generator, and FIG. 8 is taken along the line AA in FIG. 9 is a horizontal sectional view taken along line BB in FIG. 7, FIG. 10 is a front view of the steam generator, FIG. 11 is a vertical sectional view of the blower, FIG. 12 is a control block diagram, and FIG. Is a table showing the relationship between the cooking menu and the heater used therefor, and FIG. 14 is a table showing the relationship between the amount of steam and the amount of power.

  The superheated steam cooker 1 includes a rectangular parallelepiped cabinet 10. A door 11 is provided in front of the cabinet 10. The door 11 rotates in a vertical plane centering on the lower end. By grasping the upper handle 12 and pulling it forward, the door 11 is changed from the vertical closed state shown in FIG. 1 to the horizontal open state shown in FIG. 90 ° attitude change is possible. The door 11 has a configuration in which a left portion 11L and a right portion 11R, which are finished with a metal decorative plate, are symmetrically arranged on the left and right sides of a central portion 11C having a see-through portion fitted with heat-resistant glass. An operation panel 13 is provided on the right portion 11R.

  When the door 11 is opened, the front of the cabinet 10 is exposed. A heating chamber 20 is provided at a location corresponding to the central portion 11 </ b> C of the door 11. A water tank chamber 70 is provided at a location corresponding to the left side portion 11L of the door 11. No opening is provided at a location corresponding to the right portion 11R of the door 11, but a control board is disposed inside the location.

  The heating chamber 20 has a rectangular parallelepiped shape, and the front side facing the door 11 is entirely open. The remaining surface of the heating chamber 20 is formed of a stainless steel plate. Heat insulation measures are taken around the heating chamber 20. A stainless steel plate receiving tray 21 is placed on the bottom surface of the heating chamber 20, and a stainless steel wire rack 22 is placed on the receiving tray 21 to support the object to be heated F in a floating state from the bottom surface of the heating chamber 20. . In this specification, “bottom surface” and “side surface” of the heating chamber 20 refer to the bottom surface and the side surface inside the heating chamber 20.

  Steam in heating chamber 20 (normally, the gas in heating chamber 20 is air, but when steam cooking is started, air is replaced by steam. In this specification, the gas in heating chamber 20 is steam. The explanation will be made assuming that it has been replaced with (3)), and circulates through the external circulation path 30 shown in FIG.

  The starting end of the external circulation path 30 is a suction port 28 formed at one corner of the upper side wall of the heating chamber 20. In this embodiment, as can be seen in FIG. 3, the suction port 28 is arranged in the upper left corner of the side wall. The suction port 28 is formed by arranging a plurality of horizontal slits in the vertical direction, and the upper slit is longer and shorter as it goes downward to form a right triangle opening as a whole (see FIG. 11). The right angle of the right triangle is adjusted to the angle of the side wall at the back of the heating chamber 20. That is, the opening degree of the suction port 28 is larger as it is closer to the upper side of the side wall at the back of the heating chamber 20. The closer to the left side, the larger.

  Following the suction port 28 is a blower 25 that forms an airflow flowing in the external circulation path 30. The blower device 25 is disposed close to the outer surface of one side wall of the heating chamber 20. A side wall at the back of the heating chamber 20 is selected as one side wall. As shown in FIG. 11, the blower 25 includes a centrifugal fan 26, a fan casing 27 that accommodates the centrifugal fan 26, and a motor 29 that rotates the centrifugal fan 26. A sirocco fan is used as the centrifugal fan 26. As the motor 29, a DC motor capable of high speed rotation is used. The fan casing 27 is fixed to the lower right position of the suction port 28 on the outer surface of the rear side wall of the heating chamber 20.

  The fan casing 27 has a suction port 27a and a discharge port 27b. The discharge port 27b is oriented in a specific direction, and the meaning of the direction will be described later.

  A steam generator 50 follows the blower 25 in the external circulation path 30. Details of the steam generator 50 will be described later. The steam generation device 50 is disposed close to the outer surface of the side wall at the back of the heating chamber 20, similarly to the blower device 25. However, while the blower 25 is disposed at a position on the left side of the heating chamber 20, the steam generator 50 is on the center line of the heating chamber 20.

  In the external circulation path 30, a section from the discharge port 27 b of the fan casing 27 to the steam generator 50 is constituted by a duct 31. The section after exiting the steam generator 50 is constituted by a duct 35. The duct 35 is connected to a subcavity 40 provided adjacent to the heating chamber 20.

  The subcavity 40 is provided on the ceiling portion of the heating chamber 20 at a location corresponding to the center portion of the ceiling portion in plan view. The subcavity 40 has a circular shape in plan view, and a gas heating heater 41 is disposed inside thereof. The gas temperature raising heater 51 heats the steam sent from the steam generating device 50 to superheated steam, and the combination of the steam generating device 50 and the gas temperature raising heater 41 constitutes the superheated steam generating device. The gas temperature raising heater 41 includes a main heater 41a and a sub heater 41b, both of which are constituted by sheathed heaters.

  A small subcavity 44 is provided outside the right side wall of the heating chamber 20 as shown in FIG. The subcavity 44 is connected to the subcavity 40 by a duct 45, and is supplied with superheated steam from the subcavity 40 (see FIGS. 5 and 6). The duct 45 is constituted by a pipe having a circular cross section. It is desirable to use a stainless steel pipe.

  On the right side surface of the heating chamber 20, a plurality of side blow holes 46 are provided at locations corresponding to the subcavities 44. Each side blowing hole 46 is a small hole directed in the direction of the object to be heated F placed in the heating chamber 20, and jets superheated steam in the direction of the object to be heated F placed on the rack 22. The size, total number, location of the side blow holes 46, the location of the holes, and the density and location of the holes so that the superheated steam can be applied to the widest possible area of the article to be heated F while ensuring a predetermined ejection speed. A pattern or the like is determined.

  The side blow holes 46 may be formed in a separate panel, or may be formed by directly punching small holes in the side wall of the heating chamber 20. In order to supply a large amount of superheated steam to the side fumarole 46, a plurality of (four in the figure) ducts 45 are provided for the subcavity 44.

  Next, the structure of the steam generator 50 will be described. The steam generator 50 includes a cylindrical pot 51 arranged with a center line vertical. The pot 51 has a flat planar profile on the side wall constituting the vertical surface, and has an elongated horizontal cross-sectional shape, that is, a rectangular shape, an oval shape, or a similar horizontal cross-sectional shape. The pot 51 is required to have heat resistance, but may be formed of any material as long as the condition is satisfied. It may be a metal or a synthetic resin. Ceramics can also be used. Different materials may be combined.

  As shown in FIG. 6, the steam generator 50 is attached such that one flat side surface of the pot 51 is parallel to the inner side wall of the heating chamber 20. If it is this form, even if the width | variety of the space of the outer surface of the heating chamber 20 and the inner surface of the cabinet 10 is narrow, the steam generator 50 can be arrange | positioned. Therefore, the width of the space can be reduced to make the cabinet 10 compact, and the space utilization efficiency in the cabinet 10 can be improved.

  It is a steam generating heater 52 arranged at the bottom of the pot 51 that heats the water in the pot 51. The steam generating heater 52 is a sheathed heater, which is immersed in water in the pot 51 to directly heat the water. As seen in FIG. 9, the steam generating heater 52 is bent into a flat horseshoe shape along the inner surface of the pot 51 in accordance with the flat shape of the pot 51. Similar to the gas temperature raising heater 41 in the subcavity 40, the steam generating heater 52 is also composed of a main heater 52a and a subheater 52b, with the former arranged outside and the latter arranged inside. The diameter of the cross section is also different, the main heater 52a is thick, and the sub heater 52b is thin.

  When placing a sheathed heater in a surface with the same area, it is more flat like a horseshoe shape in a rectangular or oval surface than in a case in which a sheathed heater bent into a circle is placed in a circular surface. The length of the sheathed heater is longer in the case where the sheathed heater bent into a proper shape is placed. That is, the ratio of the length of the sheathed heater to the same amount of water is greater when a sheathed heater bent like a horseshoe is placed in a pot with an elongated horizontal sectional shape than in a pot with a circular section in a pot with a circular section. It becomes larger, the surface area of the sheathed heater becomes larger, and a large electric power can be input, so that heat can be easily transferred to water. For this reason, in the steam generator 50 of this embodiment, water can be heated rapidly.

  A steam suction part for sucking steam into the airflow flowing through the external circulation path 30 is formed in the upper part of the pot 51. The steam suction part is constituted by a steam suction ejector 34 formed so as to pass from one flat side surface of the pot 51 to the other flat side surface. A total of three vapor suction ejectors 34 are arranged in parallel and parallel to each other at the same height level at a predetermined interval.

  Each vapor suction ejector 34 includes an inner nozzle 34a and an outer nozzle 34b surrounding its discharge end. The steam suction ejector 34 extends in a direction intersecting the axis of the pot 51. In the embodiment, the crossing angle is a right angle, i.e. the vapor suction ejector 34 is horizontal. A duct 31 is connected to the inner nozzle 34a, and a duct 35 is connected to the outer nozzle 34b. The vapor suction ejector 34 is substantially the same height as the subcavity 40, and the duct 35 extends substantially horizontally. Thus, by connecting the steam suction part and the subcavity 40 linearly by the horizontal duct 35, the external circulation path 30 after passing the steam suction part can be made the shortest path.

  The external circulation path 30 is divided into three shunts including three steam suction ejectors 34 and a duct 35 subsequent thereto after the steam generator 50. For this reason, the pressure loss of the passage is reduced, the circulation steam amount can be increased, and the steam can be quickly mixed with the gas flowing through the external circulation path 30.

  As described above, the three steam suction ejectors 34 provided on the upper part of the pot 51 constitute a steam suction portion that occupies a flat space in the vertical cross-sectional shape and cover a wide area. The steam is sucked evenly and evenly, and the sucked steam is quickly sent out, so that the steam generation capability of the steam generator 50 is further improved. Further, since the three steam suction ejectors 34 are arranged in parallel with each other at the same height level, a large amount of steam can be transported even when there is no space in the height direction.

  Here, the direction of the fan casing 27 of the blower 25 will be described. The suction port 27a and the discharge port 27b of the fan casing 27 are perpendicular to each other. The position and angle of the fan casing 27 are set so that the discharge port 27b faces the direction of the steam suction ejector 34 that is the steam suction portion (see FIG. 11). A ventilation path is secured by the duct 31 between the discharge port 27 b and the vapor suction ejector 34. A ventilation path is also secured between the suction port 28 and the suction port 27a by a duct (not shown).

  With the above configuration, the gas sucked from the suction port 28 reaches the vapor suction ejector 34 through the shortest route as the air blowing route by the centrifugal fan. For this reason, the length of the external circulation path 30 is shortened, and the pressure loss at the time of ventilation reduces. Thereby, the energy input efficiency of the external circulation path 30 is improved. Further, since the heat radiation area of the external circulation path 30 is reduced, heat loss is also reduced. Together, the circulation efficiency of the external circulation path 30 is improved.

  The airflow discharged from the discharge port 27b has the highest flow velocity at the center as symbolized by the arrow group in FIG. 11, and the flow velocity decreases as it approaches the inner surface of the duct 31. This is due to the friction between the inner surface of the duct 31 and the gas. The portion of the airflow having the highest flow velocity is directed toward the center of the three steam suction ejectors 34 arranged side by side. Thereby, a direct communication relationship is established between the central steam suction ejector 34 and the discharge port 27b.

  Here, the “direct communication relationship” means that the gas discharged from the discharge port 27b reaches the vapor suction ejector 34 without detouring. This “direct communication relationship” is established not only for the central steam suction ejector 34 but also for the steam suction ejectors 34 on both sides thereof. This can be achieved by appropriately setting the width and angle of the portion of the duct 31 connected to the discharge port 27b. With this configuration, the variation in the air volume distributed to each steam suction ejector 34 is reduced, and steam can be sucked evenly from a wide range, so that the steam suction efficiency is improved.

  Returning to FIG. 4, the description will be continued. The bottom of the pot 51 is formed in a funnel shape, and the drain pipe 53 hangs down from there. A drain valve 54 is provided in the middle of the drain pipe 53. The lower end of the drain pipe 53 is bent toward the bottom of the heating chamber 20 with a predetermined angle gradient. A drain tank 14 disposed under the heating chamber 20 receives the end of the drain pipe 53. The drain tank 14 can be pulled out from the front side of the cabinet 10 to discard the water inside.

  Water is supplied to the pot 51 through a water supply channel. The water supply path is constituted by a water supply pipe 55 that connects the water tank 71 and the drain pipe 53. The water supply pipe 55 is connected to the drain pipe 53 at a location above the drain valve 54. The water supply pipe 55 drawn out from the connection point with the drain pipe 53 is once lifted into an inverted U shape and then lowered. A water supply pump 57 is installed in the middle of the descending portion. The water supply pipe 55 communicates with a horizontal funnel-shaped receiving port 58. A horizontal communication pipe 90 connects the water supply pipe 55 and the receiving port 58.

  A pot water level sensor 56 is disposed inside the pot 51. The pot water level sensor is positioned slightly higher than the steam generating heater 52.

  A rectangular parallelepiped water tank 71 is inserted into the water tank chamber 70. A water supply pipe 72 extending from the bottom of the water tank 71 is connected to the receiving port 58.

  When the water tank 71 is pulled out from the water tank chamber 70 and the water supply pipe 72 is separated from the receiving port 58, the water in the water tank 70 and the water on the water supply pipe 55 side will flow out as they are. In order to prevent this, coupling plugs 59 a and 59 b are attached to the receiving port 58 and the water supply pipe 72. In the state where the water supply pipe 72 is connected to the receiving port 58 as shown in FIG. 4, the coupling plugs 59 a and 59 b are connected to each other so that water can pass therethrough. When the water supply pipe 72 is pulled away from the receiving port 58, the coupling plugs 59a and 59b are closed, and the outflow of water from the water supply pipe 55 and the water tank 71 is stopped.

  A water supply pipe 55, a pressure detection pipe 91, and a pressure release pipe 92 are connected to the communication pipe 90 in order from the receiving port 58. A water level sensor 81 is provided at the upper end of the pressure detection pipe 91. The water level sensor 81 measures the water level in the water tank 71. The upper end of the pressure release pipe 92 bends horizontally and is connected to an exhaust path through which steam escapes from the heating chamber 20.

  The exhaust duct 93 and the container 93a constitute the exhaust path. The exhaust duct 93 constitutes the front part of the exhaust path, and the container 93a constitutes the rear part of the exhaust path. The exhaust duct 93 is longer in length. The exhaust duct 93 extends from the side wall of the heating chamber 20, gradually increases in height, and then is connected to the container 93a. The container 93a communicates with the outside of the machine, that is, outside the cabinet 10. The container 93a is made of synthetic resin, and has a larger cross-sectional area of the flow path than the exhaust duct 93.

  The inlet of the exhaust duct 93 is open toward the inside of the heating chamber 20. For this reason, if there is a liquid flowing down the exhaust duct 93 in the opposite direction to the exhaust, it enters the heating chamber 20 and accumulates at the bottom of the heating chamber. Since it can be seen at a glance that liquid has accumulated at the bottom of the heating chamber 20, the process will not be forgotten.

  At least a part of the exhaust duct 93 serves as a heat radiating portion 94. The heat radiating portion 94 is configured by a metal pipe having a plurality of heat radiating fins 95 on the outer surface.

  The container 93a passes beside the duct 31. In this place, a communication path is provided between the duct 31 and the container 93a. A communication duct 96 constitutes the communication path, and an electric damper 97 is provided therein. The damper 97 closes the communication duct 96 in a normal state.

  The highest portion of the water supply pipe 55 communicates with the container 93a through the overflow channel. What constitutes the overflow channel is an overflow pipe 98 having one end connected to the water supply pipe 55 and the other end connected to the upper end horizontal portion of the pressure release pipe 92. The height of the location where the pressure release pipe 92 is connected to the container 93a is the overflow level. The overflow level is set to be higher than the normal water level in the pot 51 and lower than the steam suction ejector 34.

  The container 93a has a complicated shape to receive the exhaust duct 93, the communication duct 96, the overflow pipe 98 and various ducts and pipes, but since it is made of synthetic resin, it can be seamless. For this reason, the problem of water leakage from the joint does not occur.

  It is the control device 80 shown in FIG. 12 that controls the operation of the superheated steam cooker 1. The control device 80 includes a microprocessor and a memory, and controls the superheated steam cooker 1 according to a predetermined program. The control status is displayed on the display unit in the operation panel 13. An operation command is input to the control device 80 through various operation keys arranged on the operation panel 13. The operation panel 13 is also provided with a sound generating device for producing various sounds.

  In addition to the operation panel 13, the blower 25, the gas temperature raising heater 41, the damper 97, the steam generation heater 52, the drain valve 54, the pot water level sensor 56, the water supply pump 57, and the water level sensor 81 are connected to the control unit 80. The In addition, a temperature sensor 82 for measuring the temperature in the heating chamber 20 and a humidity sensor 83 for measuring the humidity in the heating chamber 20 are connected.

  The operation of the superheated steam cooker 1 is as follows. First, the door 11 is opened, the water tank 71 is pulled out from the water tank chamber 70, and water is poured into the water tank 71 from a water supply port (not shown). The fully filled water tank 71 is pushed into the water tank chamber 70 and set at a predetermined position. After confirming that the tip of the water supply pipe 72 is firmly connected to the water inlet 58 of the water supply path, the article to be heated F is put into the heating chamber 20 and the door 11 is closed. Then, the power key in the operation panel 13 is pressed to turn on the power, and the operation key group provided in the operation panel 13 is also pressed to select the cooking menu and make various settings.

  When the water supply pipe 72 is connected to the receiving port 58, the water tank 71 and the pressure detection pipe 91 are in communication with each other, and the water level sensor 81 measures the water level in the water tank 71. If there is sufficient water to carry out the selected cooking menu, the controller 80 will initiate steam generation. If the amount of water in the water tank 71 is insufficient to perform the selected cooking menu, the control device 80 displays that fact on the operation panel 13 as a warning notification. Steam generation is not started until the shortage of water is resolved.

  When steam generation can be started, the water supply pump 57 starts operation and water supply to the steam generator 50 starts. At this time, the drain valve 54 is closed.

  Water accumulates from the bottom of the pot 51. When the pot water level sensor 56 detects that the water level has reached a predetermined level, the water supply is stopped there. Then, energization to the steam generating heater 52 is started. The steam generating heater 52 directly heats the water in the pot 51.

  Simultaneously with the energization of the steam generating heater 52, or when the water in the pot 51 reaches the predetermined temperature, the energization of the blower 25 and the gas temperature raising heater 41 is also started. The blower 25 sucks steam in the heating chamber 20 from the suction port 28 and sends the steam to the steam generator 50. Since the centrifugal fan 26 is used to send out the steam, a higher pressure can be generated compared to the propeller fan. In addition, since the centrifugal fan 26 is rotated at a high speed by a direct current motor, the flow velocity of the airflow is extremely fast.

  Since the flow velocity of the airflow is high in this way, the cross-sectional area of the flow path can be smaller than the flow rate. Therefore, the pipe forming the main body of the external circulation path 30 can have a circular cross section and a small diameter, and the surface area of the external circulation path 30 can be reduced compared to the case where the external circulation path 30 is formed by a duct having a rectangular cross section. For this reason, although hot steam passes through the inside, heat dissipation from the external circulation path 30 is reduced, and the energy efficiency of the superheated steam cooker 1 is improved. Even when the external circulation path 30 is wound with a heat insulating material, the amount of the heat insulating material is small.

  At this time, the damper 97 closes the duct 96 leading from the duct 31 to the container 93a. The steam pumped from the blower 25 enters the steam suction ejector 34 from the duct 31, and further enters the subcavity 40 through the duct 35.

  When the water in the pot 51 boils, saturated steam at 100 ° C. and 1 atm is generated. Saturated steam enters the external circuit 30 from the steam suction ejector 34. Since the ejector structure is used, saturated steam is quickly sucked and joins the circulating airflow. Due to the ejector structure, no pressure is applied to the steam generator 50 and the release of saturated steam is not hindered.

  The steam exiting the steam suction ejector 34 flows into the subcavity 40 through the duct 35. The steam that has entered the subcavity 40 is heated to 300 ° C. by the gas temperature raising heater 41 and becomes superheated steam. The superheated steam is sent to the sub-cavity 44 through the duct 45, and is ejected from the side portion blow hole 46 in the direction of the object to be heated F (see FIG. 5). The superheated steam is ejected with a momentum that reaches the side surface of the heating chamber 20, that is, the left side surface facing the side portion air hole 46.

  The superheated steam collides with one side surface of the article F to be heated, and the article F to be heated is quickly heated. The superheated steam does not all hit one side surface of the object to be heated F, and a considerable part is above and behind the object to be heated F, and the object to be heated F is floated from the bottom surface of the heating chamber 20 by the rack 22. By being supported, it passes under the article to be heated F. The superheated steam that passes through the object to be heated F transfers heat to the object to be heated F. The superheated steam that has grazed the object to be heated F and the superheated steam that has passed without contacting the object to be heated F bounces off the left side surface of the heating chamber 20 and wraps around the back side of the object to be heated F. For this reason, the to-be-heated material F is heated evenly to the left side surface which does not face the side fumarole 46.

  Superheated steam that has flowed into the heating chamber 20 from the side blow holes 46 is sucked into the suction port 28 one after another. Then, after making a round of the route called the subcavity 40 from the external circulation path 30, the temperature is raised to a predetermined temperature, and then returns to the heating chamber 20 through the side portion air holes 46. In this way, the superheated steam in the heating chamber 20 repeats circulation such that it exits the external circulation path 30 and is regenerated into superheated steam having a predetermined temperature and returns to the heating chamber 20.

  The superheated steam heated to about 300 ° C. and ejected from the side blow holes 46 collides with the object to be heated F and transfers heat to the object to be heated F. As a result, the temperature drops to about 250 ° C. A part of the superheated steam condenses on the surface of the object to be heated F, and at that time, latent heat is released. The object to be heated F is also heated by this condensation latent heat.

    As described above, when the superheated steam from the side blow hole 46 directly hits the object to be heated F, the object to be heated F is preferentially heated. In addition, since the object to be heated F is supported by the rack 22 in a state of floating from the bottom surface of the heating chamber 20, the superheated steam can be caused to enter the lower surface of the object to be heated F. Since the superheated steam is ejected from the side nozzle holes 46 with a momentum reaching the opposite side surface of the heating chamber 20, the superheated steam that directly hits the object F to be heated not only heats the object F to be heated. Since the superheated steam that did not directly hit the heated object F rebounds on the opposite side and wraps around the back side of the heated object F, the heated object F is evenly heated evenly to the part that does not face the side blow holes 46, Thereby, the cooking result with a good appearance without unevenness can be obtained. Moreover, since the to-be-heated material F receives heat equally from the whole surface, it is fully heated to a center part for a short time.

  As time passes, the amount of steam in the heating chamber 20 increases. The surplus steam is discharged outside the machine through the exhaust passage. If the steam goes out of the cabinet 10 as it is, dew condensation occurs on the surrounding wall surface and mold occurs. However, since there is a heat radiating portion 94 in the middle of the exhaust duct 93, the steam is deprived of heat while passing through the exhaust duct 93 and is condensed on the inner surface of the exhaust duct 93. Therefore, the amount of steam that goes out of the cabinet 10 is small and does not cause a serious problem. Water condensed on the inner surface of the exhaust duct 93 flows down in the direction opposite to the direction of exhaust and enters the heating chamber 20. This water can be treated together when the water collected in the tray 21 is treated.

  Since the container 93a communicating with the outside of the machine is formed with a large flow path area, the steam blowing speed becomes slow. Therefore, the object outside the aircraft is not damaged by the steam hitting it vigorously.

  Since the object to be heated F is heated while circulating the superheated steam in the heating chamber 20, the energy efficiency of the superheated steam cooker 1 is high. Further, the steam that has entered the subcavity 40 is heated by the gas temperature raising heater 41 and expands, whereby the momentum of jetting increases and the collision speed with the heated object F increases. Thereby, the to-be-heated material F is heated more rapidly.

  Since the centrifugal fan 26 can generate a higher pressure than the propeller fan, the jet power from the side blow holes 46 can be increased. As a result, the superheated steam can be ejected with a momentum reaching the opposite side surfaces of the heating chamber 20, and the heated object F can be heated strongly. The centrifugal fan 26 is rotated at a high speed by a direct current motor and blows powerfully, so that the above-mentioned effect appears more remarkably.

  In addition, the strong blowing power of the blower 25 greatly helps to quickly exhaust air from the exhaust port 32 when the door 11 is opened to take out the article F to be heated.

  When the object to be heated F is meat, the oil may dripping when the temperature rises. If the object to be heated F is a liquid contained in a container, it may boil and partially spill. What has dripped or spilled is received by the tray 21 and waits for processing after cooking is completed.

  If steam is continuously generated by the steam generator 50, the water level in the pot 51 is lowered. When the pot water level sensor 56 detects that the water level has dropped to a predetermined level, the control device 80 restarts the operation of the water supply pump 57. The water supply pump 57 sucks the water in the water tank 71 and replenishes the pot 51 with the evaporated water. When the pot water level sensor 56 detects that the water level in the pot 51 has recovered to a predetermined level, the control device 80 stops the operation of the water supply pump 57 again.

  If the pot water level sensor 56 or the feed water pump 57 fails, or if the water pump 57 does not stop operating due to other reasons, the water level in the pot 51 continues to rise above a predetermined level. When the water level reaches the overflow level, the water sent from the feed pump 57 overflows from the overflow pipe 98 to the container 93a and flows into the exhaust duct 93. For this reason, the water in the pot 51 does not enter the external circulation path 30 from the steam suction ejector 34. Water entering the exhaust duct 93 flows into the heating chamber 20.

  The container 93a has a large capacity because it has a large flow path area. Therefore, even if a large amount of water overflows, it can be received with sufficient margin and slowly discharged from the exhaust duct 93.

  After cooking is completed, the control device 80 displays a message to that effect on the operation panel 13 and sounds a signal. A user who knows the end of cooking by sound and display opens the door 11 and takes out the article F to be heated from the heating chamber 20.

  When the door 11 is about to open, the control device 80 switches the open / close state of the damper 97 and opens the duct 96. Then, the airflow flowing in the external circulation path 30 passes from the duct 96 to the container 93a, and there is almost no part of turning to the steam generator 50. For this reason, the amount of steam flowing into the subcavity 40 is reduced, and the ejection of superheated steam from the side blow holes 46 is extremely weak, if any. Therefore, the user can safely take out the object to be heated F without incurring a burn on the face or hands. The damper 97 opens the duct 96 while the door 11 is open.

  The duct 96 and the container 93a are not as hot as the external circulation path 30 because the steam is not circulated. Therefore, the vapor flowing from the external circulation path 30 is condensed when it contacts the duct 96 and the inner wall of the container 93a. Water generated by the condensation flows down through the duct 93 and enters the heating chamber 20. This water can be treated after the cooking is finished together with the water accumulated at the bottom of the heating chamber 20 for other reasons.

  Since the container 93a is formed with a large flow path area, the internal surface area is large. Therefore, a considerable part of the steam that has entered from the duct 96 is condensed here, and the amount of steam released to the outside can be reduced.

  If exhausting is performed by starting the blower 25 that is stopped, a time lag occurs until the steady blower state is reached, but in this embodiment, the blower 25 is already in operation and the time lag is zero. is there. Further, since the circulating airflow that has flowed around the heating chamber 20 and the external circulation path 30 becomes the exhaust airflow from the container 93a as it is, there is no time lag for changing the direction of the airflow. Thereby, the vapor | steam in the heating chamber 20 is discharged | emitted without delay, and the time until opening of the door 11 is attained can be shortened.

  The situation that the user is about to open the door 11 can be notified to the control device 80 as follows, for example. That is, a latch for keeping the door 11 closed is provided between the cabinet 10 and the door 11, and a latch lever for unlocking the latch is provided so as to be exposed from the handle 12. A switch that opens and closes in response to the movement of the latch or the latch lever is arranged inside the door 11 or the handle 12, and when the user performs an unlocking operation by grasping the handle 12 and the latch lever, the switch switches to the control device 80. Make sure the signal is sent.

  As described above, the steam generating heater 52 includes the main heater 52a having a large calorific value and the sub-heater 52b having a small calorific value. Here, the power consumption of the main heater 52a is set to 700W, and the power consumption of the sub heater 52b is set to 300W. The mode in which the controller 80 controls the energization of the main heater 52a and the sub heater 52b is set as follows. That is, a mode in which both the main heater 52a and the sub heater 52b are energized to set the power consumption of the entire steam generating heater 52 to 1000 W, and a mode in which only the sub heater 52b is energized to set the power consumption of the entire steam generating heater 52 to 300 W. Street.

  The gas temperature raising heater 41 also includes a main heater 41a having a large calorific value and a sub-heater 41b having a small calorific value. Here, the power consumption of the main heater 41a is set to 1000W, and the power consumption of the sub heater 41b is set to 300W. The mode in which the controller 80 controls the energization of the main heater 41a and the sub heater 41b is set as follows. That is, both the main heater 41a and the sub-heater 41b are energized to set the power consumption of the entire gas heating heater 41 to 1300 W, and only the main heater 41a is energized to set the power consumption of the entire gas heating heater 41 to 1000 W. There are three modes: a mode and a mode in which only the sub-heater 41b is energized and the power consumption of the gas heating heater 41 as a whole is set to 300W. The mode with power consumption of 1300 W is used when generating hot air containing no steam, and the mode with power consumption of 1000 W and mode of 300 W are used when steam is overheated.

  Using the above configuration, various cooking menus can be developed as shown in FIG.

  In the “steaming” menu, both the main heater 52a and the sub heater 52b of the steam generating heater 52 are energized. On the gas heating heater 41 side, only the sub heater 41b is energized.

  The power consumption 1000 W of the steam generating heater 52 when energizing both the main heater 52a and the sub heater 52b generates steam of 22 g / min in FIG. 14 when the heat generation efficiency of the steam generating apparatus is 82.0%. Is approximately equal to the heater power required for this. With this amount of steam, in the gas temperature raising heater 41, the 300 W sub-heater 41b can be used as superheated steam at 130 ° C. Thereby, cooking of “steaming” in which superheated steam, not hot air, is the main component of temperature transmission can be performed. The total power consumption of the steam generating heater 52 and the gas heating heater 41 is 1300 W, which is within the range of the power capacity per household outlet.

Cooking with superheated steam proceeds as follows.
(A) Superheated steam exceeding 100 ° C. comes into contact with the surface of the food and condenses to give the heat of condensation to the food.
(B) Thereby, the food surface temperature rises faster than hot air.
(C) Since the temperature of the food surface rises quickly, the temperature inside the food also rises quickly due to heat conduction. The steam that has released the latent heat of condensation becomes hot water, which penetrates into the food and raises the internal temperature of the food and moisturizes the food.
(D) When the surface temperature of the food reaches 100 ° C., the superheated steam repeats condensation and vaporization on the food surface, and the surface temperature of the food stagnates near 100 ° C.
(E) If the heating is further continued, the food surface is dried to a temperature exceeding 100 ° C., and a burnt color starts to appear.

  When the temperature of the superheated steam is 130 ° C. or lower, the stage (c) is reached. Cooking equivalent to “steamed” and “boiled” can be performed.

  When the temperature of the superheated steam is 150 ° C. or higher, the above steps (d) to (e) are reached. “Bake coloring” and “Grill” cooking can be performed.

  Cooking with superheated steam does not mean that the higher the amount of steam, the better. In the case of cooking with “steaming” and “boiled” with a steam temperature of 130 ° C. or less, the steam adhering to the food up to the above-described steps (a) to (c), that is, until the stage where the condensed water has some effect on the food. This amount is the upper limit of steam amount. More steam becomes ineffective steam that cannot adhere to food.

  In addition, when “baked coloring” cooking is performed using superheated steam of 150 ° C. or higher, if the amount of steam is large, the amount of moisture penetrating into the food increases, and the residence in the vicinity of 100 ° C. in the stage (d) above. The time will be longer, and it will be delayed until the baked color comes out. Therefore, the amount of superheated steam should be moderate.

  Based on the above findings, an experiment was conducted to determine the amount of steam suitable for cooking “boiled” and “boiled”. It has been found that an amount of steam sufficient to evaporate 15-25 g of water is optimal.

  Moreover, when the experiment which calculates | requires the amount of steam suitable for cooking of "baking coloring" was conducted, if the size of a heating chamber is about the size of a general cooking device for home use, 5-10 g of water per minute is consumed from food. It was found that the amount of vapor to evaporate is optimal.

  If the allowable value of power consumption is 1300 W, the power consumption of the gas temperature raising heater 41 must be reduced if the power consumption of the steam generating heater 52 is increased to increase the amount of steam. However, the ratio of the power consumption of the steam generating heater 52 and the gas heating heater 41 is currently 1000 W to 300 W, that is, 10: 3. If the specific gravity is further shifted to the steam generating heater, the steam is reduced to 130. It becomes impossible to make superheated steam at ℃. That is, in Japanese homes where the permissible power per outlet is about 1500 W, the steam-generating heater 52 consumes 1000 W and the gas heater 41 consumes 300 W. This is a realistic power setting when cooking.

  In the “coloring” menu, only the sub-heater 52b is energized on the steam generating heater 52 side. On the gas heating heater 41 side, only the main heater 41a is energized. The total power consumption of the steam generating heater 52 and the gas heating heater 41 is 1300 W.

  The power consumption 300W of the sub-heater 52b of the steam generating heater 52 is substantially equal to the heater power necessary for generating steam of 6.5 g / min in FIG. If the amount of steam is this level and 1000 W is distributed to the gas temperature raising heater 41, the temperature of the superheated steam reaches 200 ° C. or more. Thereby, a food color can be colored while cooking with superheated steam.

  When the steam generating heater 52 is energized to generate steam to perform cooking such as “steaming”, “boiled”, and “baking coloring”, the gas temperature raising heater 41 is not concentrated on the steam generating heater 52 alone. Distribute some kind of power. This is because superheated steam cannot be obtained unless the gas temperature raising heater 41 is energized. However, the gas temperature raising heater 41 can be used independently regardless of the steam generating heater 52.

  In the “grill” menu, the steam generating heater 52 is not energized, and only the gas temperature raising heater 41 is energized to the main heater 41a and the sub heater 41b. Thereby, cooking can be performed only with hot air without depending on steam. The total power consumption of the steam generating heater 52 and the gas heating heater 41 is 1300 W.

  As described above, the control device 80 changes the use mode of the main heater 52a and the sub heater 52b of the steam generating heater 52 and the main heater 41a and the sub heater 41b of the gas temperature raising heater 41 according to the selected cooking menu. Since it is possible to control to increase the heat generation amount of the gas heating heater 41 compared to the steam generation heater 52 and control to increase the heat generation amount of the steam generation heater 52 compared to the gas heating heater 41, A cooking menu that focuses on the cooking effect by steam and a cooking menu that focuses on the cooking effect by hot air can be provided, and cooking suitable for the properties of the food can be performed.

  Further, since the control device 80 performs control so that the total power consumption of the steam generating heater 52 and the gas heating heater 41 does not exceed the allowable value (1300 W in this case), it can be used safely even in places where the allowable current value is limited. can do.

  The steam generating heater 52 and the gas temperature raising heater 41 are each composed of a main heater having a large heat generation amount and a sub-heater having a small heat generation amount, and the heat generation amount is switched depending on whether the main heater and the sub heater are energized one by one or both simultaneously. Therefore, the power control system can be simple and does not increase the cost of the control device.

  And since the total power consumption of the gas temperature raising heater 41 is substantially equal to the allowable value, cooking using only hot air can be performed using the electric power of the allowable value. Further, since the heat generation amount obtained by adding the heat generation amount of the sub-heater 41b of the gas heating heater 41 to the total heat generation amount of the steam generation heater 52 is substantially equal to the allowable value, the steam generated by the steam generator 50 is superheated by the gas heating heater 41. Cooking to be steamed can be done using a full power of tolerance.

  Further, since the power consumption of the steam generating heater 52 is set to 700 W for the main heater 52 a and 300 W for the sub heater 52 b, a mode for generating steam at a power consumption of 1000 W using both the main heater 52 a and the sub heater 52 b, and the sub heater Two modes of generating steam at a power consumption of 300 W using only 52b can be selected. Further, since the power consumption of the gas heating heater 41 is set to 1000 W for the main heater 41 a and 300 W for the sub heater 41 b, a mode in which gas is heated with power consumption 1300 W using both the main heater 41 a and the sub heater 41 b, the main heater Three modes can be selected: a mode in which steam is superheated at a power consumption of 1000 W using only 41a, and a mode in which steam is superheated at a power consumption of 300W using only the sub-heater 41b.

  According to the above power consumption setting, the steam generated at a power consumption of 1000 W is used as a superheated steam at a power consumption of 300 W, the steam generated at a power consumption of 300 W is used as a superheated steam at a power consumption of 1000 W, and the power consumption is 1300 W. In addition, a combination of generating hot air that does not contain steam is possible, and all of them can be kept within the power capacity per household outlet.

  The power consumption of the steam generating heater 52 can be set as follows. That is, the power consumption of the main heater 52a is set to 1000W, and the power consumption of the sub heater 52b is set to 300W.

  If comprised as mentioned above, two modes, the mode which generates steam with power consumption 1000W using the main heater 52a, and the mode which generates steam with power consumption 300W using the sub heater 52b can be selected. If the power consumption setting of the gas heating heater 41 is 1000 W for the main heater 41a and 300W for the sub heater 41b, a mode in which gas is heated with power consumption 1300W using both the main heater 41a and the sub heater 41b, the main heater Three modes can be selected: a mode in which steam is superheated at a power consumption of 1000 W using only 41a, and a mode in which steam is superheated at a power consumption of 300W using only the sub-heater 41b. Therefore, the steam generated at power consumption 1000W is used as superheated steam at power consumption 300W, the steam generated at power consumption 300W is used as superheated steam at power consumption 1000W, and hot air that does not contain steam is generated at power consumption 1300W. Combinations to be generated are possible, and all of them can be kept within the power capacity per household outlet.

  In the above embodiment, the configuration in which the steam in the heating chamber 20 is returned from the external circulation path 30 to the heating chamber 20 again through the subcavity 40 is adopted, but a configuration different from this is also possible. For example, new steam may be constantly supplied to the subcavity 40, and steam overflowing from the heating chamber 20 may be continuously discharged from the duct 93.

  FIG. 15 shows a second embodiment of the superheated steam cooker according to the present invention. FIG. 15 is a basic structural view of an internal mechanism similar to FIG. In order to avoid duplication of description, components that are the same as or functionally common to those in the first embodiment are denoted by the same reference numerals as those used in the description of the first embodiment, and description thereof is omitted. The same method is followed in the third and subsequent embodiments.

  In the second embodiment, small subcavities 44 are provided outside the side walls on the left and right sides of the heating chamber 20. The left and right sub cavities 44 are provided at a position higher than the sub cavities 44 of the first embodiment, and are connected to the sub cavities 40 by ducts 45, respectively. In orienting the side air holes 46 in the direction of the object F to be heated, the position of the subcavity 44a is high, so that the object is achieved by directing the side air holes 46a obliquely downward. For this reason, the left and right side blow holes 46 are provided so as to be inclined downward so as to be symmetrical with each other in a shape that forms a recess in the side surface of the heating chamber 20. The superheated steam spouts from the side blow holes 46 with a momentum reaching the bottom surface of the heating chamber 20.

  The superheated steam ejected from the left and right side air holes 46 collides with the left and right side surfaces and the upper surface of the heated object F vigorously. There is also superheated steam that does not hit the object to be heated F but hits the bottom surface of the heating chamber 20 (in this case, the bottom surface of the tray 21), which hits the bottom surface of the heating chamber 20 and bounces around the bottom surface of the object to be heated F. . Therefore, the object to be heated F is wrapped in superheated steam from the top, bottom, left, and right, and is heated evenly, including the bottom surface that does not face the side air holes 46.

  The superheated steam rushed to the object to be heated F from the left and right meets in the center of the heating chamber 20 and then turns upward and is sucked into the suction port 28 one after another. Then, after making a round of the route called the subcavity 40 from the external circulation path 30, the temperature is raised to a predetermined temperature, and then returns to the heating chamber 20 through the side portion fumarole 46. In this way, the superheated steam in the heating chamber 20 repeats circulation such that it exits the external circulation path 30, is regenerated into superheated steam having a predetermined temperature, and returns to the heating chamber 20.

  According to this configuration, since the superheated steam hits the object to be heated F from the left and right, the object to be heated F is heated more evenly.

  FIG. 16 shows a third embodiment of the superheated steam cooker according to the present invention. FIG. 16 is a basic structural view of an internal mechanism similar to FIG.

  In the third embodiment, in addition to the configuration of the first embodiment, a turntable 100 that rotates on the bottom surface of the heating chamber 20 is provided. That is, the vertical motor 101 is disposed outside the bottom surface of the heating chamber 20. The motor shaft 102 protrudes upward so as to penetrate the bottom surface of the heating chamber 20 and the tray 21. A cylindrical waterproof wall 21a surrounding the through hole is formed on the tray 21 so that water does not leak from the through portion. A dish-shaped turntable 100 is mounted on the motor shaft 102, and the rack 22 is placed thereon.

  The motor 101 rotates the turntable 100 at a predetermined speed while the superheated steam is ejected from the side blow holes 46. Thereby, superheated steam directly hits the entire circumference of the article to be heated F, and the heating can be made more uniform.

  A fourth embodiment of the superheated steam cooker according to the present invention is shown in FIG. FIG. 17 is a basic structural view of an internal mechanism similar to FIG.

  In the fourth embodiment, a turntable 100 is provided in the same manner as the third embodiment in addition to the configuration of the second embodiment. The motor 101 rotates the turntable 100 at a predetermined speed while superheated steam is ejected from the left and right side blow holes 46. Thereby, superheated steam directly hits the entire circumference of the article to be heated F, and the heating can be made more uniform.

  Although the embodiments of the present invention have been described above, other various modifications can be made without departing from the spirit of the present invention.

    INDUSTRIAL APPLICABILITY The present invention can be used for all cookers that perform cooking with superheated steam, whether for home use or business use.

External perspective view of superheated steam cooker External perspective view of the heating chamber with the door open Front view with the heating chamber door removed Basic structure of internal mechanism Basic structure of the internal mechanism viewed from the direction perpendicular to FIG. Top view of heating chamber Vertical section of steam generator Horizontal sectional view taken along line AA in FIG. Horizontal sectional view taken along line BB in FIG. Front view of steam generator Vertical sectional view of the blower Control block diagram Table showing the relationship between the cooking menu and the heater used for it Table showing the relationship between steam volume and electric energy The basic structure figure of the internal mechanism of the superheated steam cooker which concerns on 2nd Embodiment of this invention. The basic structure figure of the internal mechanism of the superheated steam cooker which concerns on 3rd Embodiment of this invention. The basic structure figure of the internal mechanism of the superheated steam cooker which concerns on 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Superheated steam cooker 20 Heating chamber 22 Rack 30 External circulation path 40 Subcavity 41 Gas heating heater 44 Subcavity 45 Duct 46 Side part blow hole 50 Steam generator 52 Steam generator 80 Control apparatus F To-be-heated object

Claims (3)

Superheated steam cooker with the following configuration:
(A) Heating chamber for storing an object to be heated (b) Superheated steam generator (c) The superheated steam provided on the side surface of the heating chamber and supplied from the superheated steam generator is supplied to the heated chamber. Side fumaroles ejected in the direction of the heated object.   The object to be heated is supported in a state of floating from the bottom surface of the heating chamber by a supporting means, and the side fumaroles emit superheated steam toward the object to be heated with a momentum reaching the opposite side surface or bottom surface of the heating chamber. The superheated steam cooker according to claim 1, wherein the superheated steam cooker is jetted.   The superheated steam cooker according to claim 1 or 2, wherein a turntable on which the support means is placed is provided on a bottom surface of the heating chamber.

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