JP2011033252A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of baking variation in heating and cooking a heated object by superheated steam. <P>SOLUTION: A shield plate 25 for shielding saturated steam blown off from a steam supply pipe 6 is disposed between a supply opening of the steam supply pipe 6 and an upper heater 9 opposed to the supply opening in an upper heater storage section 8 disposed on a heating chamber 7 and producing the superheated steam. Accordingly, the saturated steam blown off from the steam supply pipe 6 is brought into contact with the shield plate 25 and dispersed right and left, and up and down, so that it is prevented from being directly applied to the upper heater 9. As a result, temperature variation of the upper heater 9 is not generated, and the generation of baking variation on the heated object can be prevented. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooking device that heats and cooks an object to be heated with at least superheated steam.

  As a cooking device for cooking an object to be heated with superheated steam, there is one disclosed in Japanese Patent Application Laid-Open No. 2009-22790 (Patent Document 1). In the heating cooker disclosed in Patent Document 1, water is dripped from a water supply tank into a boiler that has been heated in advance little by little by a pump, and saturated steam is generated. The saturated steam generated in this way is sprayed toward a lower electric heater installed in the heating chamber, and fine superheated steam is generated. And the produced | generated superheated steam raises toward the to-be-cooked thing of the upper part in the said heating chamber, contacts the said to-be-cooked object, and is made to heat rapidly.

  However, the conventional cooking device disclosed in Patent Document 1 has the following problems. That is, in the heating chamber, saturated steam is directly sprayed onto the lower electric heater to generate superheated steam. In that case, the saturated water vapor is directly sprayed from one direction to the lower electric heater. Therefore, a part of the lower electric heater that is uniformly heated to 200 ° C. to 250 ° C. is cooled by the saturated steam having a temperature of 100 ° C. that is sprayed, and temperature fluctuations are generated in the lower electric heater. Will occur. As a result, temperature spots resulting from the temperature spots of the lower electric heater also occur in the superheated steam filling the heating chamber, and the spots to be cooked mounted on the mounting table placed on the lower electric heater are burned. There is a problem that will occur.

JP 2009-22790 A

  Then, the subject of this invention is providing the heating cooker which can prevent generation | occurrence | production of the burning spot at the time of cooking the to-be-heated material with superheated steam.

In order to solve the above problems, the heating cooker of the present invention is:
A heating cabinet;
An upper heater housing located above the heating chamber;
An upper heater provided in the upper heater storage section;
A steam generator for generating saturated steam;
A steam supply passage for supplying saturated steam generated by the steam generator to the upper heater housing section,
The top surface of the heating chamber is provided with a steam supply hole for ejecting superheated steam heated and generated by the upper heater in the upper heater storage portion into the heating chamber,
A shielding plate is provided between the opening of the steam supply passage in the upper heater housing and the upper heater to shield saturated water vapor that blows out from the opening and directly hits the upper heater. .

  According to the said structure, the shielding board which shields the saturated water vapor | steam which blows off from the opening part of a vapor | steam supply passage and directly hits an upper heater is installed in the upper heater accommodating part. Therefore, a part of the upper heater that is uniformly heated to about 500 ° C. to 600 ° C. is cooled by the sprayed 100 ° C. saturated steam, and temperature spots are prevented from being generated in the upper heater. . As a result, when the object to be heated is cooked with superheated steam, it is possible to prevent the occurrence of burning spots on the object to be heated.

Moreover, in the heating cooker of one embodiment,
The shielding plate also has a function of preventing hot water in the steam generator from entering the upper heater housing portion through the steam supply passage when bumping occurs in the steam generator. .

  According to this embodiment, when the object to be heated is cooked with superheated steam, it is possible to prevent occurrence of burning on the object to be heated by the action of the shielding plate. Furthermore, when bumping occurs in the steam generator, the shielding plate can prevent the hot water in the steam generator from entering the upper heater housing. Therefore, the hot water is directly applied to the upper heater and the upper heater breaks down, or the hot water enters the heating chamber through the steam supply hole and the heated object is burned. Can be prevented.

Moreover, in the heating cooker of one embodiment,
The shielding plate extends in a direction substantially perpendicular to the direction in which the saturated steam is blown from the steam supply passage, and is in close contact with the top surface of the upper heater housing and the top surface of the heating chamber.

  According to this embodiment, it is possible to more reliably shield the saturated steam blown out from the steam supply passage toward the upper heater and the hot water from the steam generator in which bumping has occurred.

Moreover, in the heating cooker of one embodiment,
The said shielding board is bent in planar view, and is installed so that the top part may oppose the blower outlet of the said steam supply channel | path.

  According to this embodiment, the saturated water vapor blown out from the steam supply passage and hits the shielding plate can be guided to both sides of the top portion. Therefore, it is possible to suppress the occurrence of turbulent flow in the vicinity of the outlet of the steam supply passage, and it is possible to quickly spread saturated water vapor throughout the upper heater housing portion.

Moreover, in the heating cooker of one embodiment,
The said shielding board is curving in planar view, and the top part is installed facing the blower outlet of the said vapor | steam supply passage.

  According to this embodiment, the saturated water vapor blown out from the steam supply passage and hits the shielding plate can be guided to both sides of the top portion. Therefore, it is possible to suppress the occurrence of turbulent flow in the vicinity of the outlet of the steam supply passage, and it is possible to quickly spread saturated water vapor throughout the upper heater housing portion.

Moreover, in the heating cooker of one embodiment,
The shielding plate is installed with a gap between the top heater housing and the top surface.

  According to this embodiment, the saturated water vapor blown out from the steam supply passage and hits the shielding plate can be guided to the gap. Therefore, it is possible to suppress the occurrence of turbulent flow in the vicinity of the outlet of the steam supply passage, and it is possible to quickly spread saturated water vapor throughout the upper heater housing portion.

Moreover, in the heating cooker of one embodiment,
The shielding plate is installed with a gap between the top surface of the heating chamber.

  According to this embodiment, the saturated water vapor blown out from the steam supply passage and hits the shielding plate can be guided to the gap. Therefore, it is possible to suppress the occurrence of turbulent flow in the vicinity of the outlet of the steam supply passage, and it is possible to quickly spread saturated water vapor throughout the upper heater housing portion.

Moreover, in the heating cooker of one embodiment,
The shielding plate is installed such that the side where the gap is provided is inclined to the side opposite to the steam supply passage side.

  According to this embodiment, the saturated water vapor blown out from the steam supply passage and hits the shielding plate can be more smoothly guided to the gap.

  As is clear from the above, the cooking device of the present invention includes an upper heater storage portion that heats the heating chamber from above, and a steam supply passage for supplying saturated steam from the steam generator to the upper heater storage portion. In the upper heater storage portion, a shielding plate that shields saturated water vapor that blows out from the opening and directly hits the upper heater is installed between the opening of the steam supply passage in the upper heater housing and the upper heater. It is possible to prevent the saturated steam blown out from the supply passage from directly hitting the upper heater.

  That is, according to the present invention, a part of the upper heater that is uniformly heated to about 500 ° C. to 600 ° C. is cooled by the sprayed 100 ° C. saturated steam, and the upper heater has temperature spots. It can be prevented from occurring. As a result, when the object to be heated is cooked with superheated steam, it is possible to prevent the occurrence of burning spots on the object to be heated.

It is a front perspective view in the grill as an example of the cooking-by-heating machine of this invention. It is a back perspective view of this grill. It is AA 'arrow sectional drawing in FIG. 1 and FIG. It is a front perspective view in the state where a door was pulled out. It is a plane perspective view of this grill.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a front perspective view of a grill as an example of a heating cooker according to the present embodiment. FIG. 2 is a rear perspective view of the grill. FIG. 3 is a cross-sectional view taken along arrows AA ′ in FIGS. 1 and 2. FIG. 4 is a view showing a state in which the door is pulled out in FIG. However, FIGS. 1, 2 and 4 show a state where a part of the cabinet forming the outer shell of the grill is removed, and FIG. 3 shows only the steam supply path.

  As shown in FIGS. 1 to 4, the grill is provided with a heating chamber 7 for cooking the object to be heated placed on the tray 21, and a heating chamber 7 placed on the heating chamber 7. Next to the upper heater storage section 8, an upper heater storage section 8 that heats from the upper side and generates superheated steam, a lower heater storage section 22 that is attached below the heating chamber 7 and heats the inside of the heating chamber 7 from the lower side, and A steam generator 4 installed to generate saturated water vapor, a tank 1 beside the heating chamber 7 and placed in front of the steam generator 4 to store water for generating steam, and behind this tank 1 And a pump 2 that is installed and supplies water in the tank 1 to the steam generator 4.

  In addition, as shown in FIG. 4, the front side of the grill is on the left and right sides perpendicular to the front-rear direction, with the opening side of the heating chamber 7 as the “front side” and the side opposite to the opening side as the “rear side”. A door 14 is provided that slides back and forth along a pair of provided rail units (only one of them appears in FIG. 4) 12a and 12b to open and close the front opening 13 of the heating chamber 7. The tank 1 is exposed forward when the door 14 is opened, and can be taken out from the front to replenish water. Further, as shown in FIG. 1, an operation unit 15 and a liquid crystal display unit 16 are provided on the right side of the door 14, a handle 17 is provided at the lower part of the door 14, and a heat-resistant glass window 18 is provided at the approximate center of the door 14. Is provided.

  The operation unit 15 includes a knob 19 and a determination button 20 that are installed on the same axis. The knob 19 is rotatably attached, and the user can select a desired cooking menu from a plurality of cooking menus displayed on the liquid crystal display unit 16 by rotating the knob 19. Then, by pressing the enter button 20, the cooking menu currently selected by the knob 19 is confirmed.

  In the present embodiment, as described above, the door 14 slides back and forth along the pair of rail units 12a and 12b to open and close the front opening 13 of the heating chamber 7, but the pair of rails As shown in FIG. 3, the units 12 a and 12 b are arranged in the front-rear direction at the left and right positions below the heating chamber 7. Here, the structure of the pair of rail units 12a and 12b is not particularly limited. For example, a fixed rail that extends in the front-rear direction on the bottom surface of the cabinet (not shown) below the heating chamber 7, and is slidably inserted into the fixed rail to move in the front-rear direction. The movable rail, and an intermediate rail provided between the fixed rail and the movable rail and provided with a rolling bearing. And the front-end part of the said movable rail in a pair of rail unit 12a, 12b is connected with the connection metal fitting (not shown), and the door 14 is attached to this connection metal so that attachment or detachment is possible.

  Further, as shown in FIG. 4, a drawer-type door 14 to which the tray 21 is connected is configured by connecting a receiving tray 21 to the back surface of the door 14 detachably attached to the connecting bracket or the connecting bracket. Yes.

  In the above configuration, in the case where the object to be heated placed on the tray 21 is cooked without using steam in the heating chamber 7, for example, a sheathed heater stored in the upper heater storage unit 8. The upper heater 9 and the lower heater 23 housed in the lower heater housing portion 22 such as a sheathed heater are turned on, and the object to be heated is heated by the radiant heat from the upper heater 9 and the lower heater 23. The

  In this case, the top panel 10 of the heating chamber 7 below the upper heater storage portion 8 functions as a partition that separates the space in the upper heater storage portion 8 from the space in the heating chamber 7, and the upper heater. 9 also functions as a radiation plate that is heated by 9 to irradiate the object to be heated in the heating chamber 7 with radiation heat. The bottom panel 24 of the heating chamber 7 on the upper side of the lower heater storage portion 22 functions as a partition that separates the space in the lower heater storage portion 22 and the space in the heating chamber 7 and is heated by the lower heater 23. It also functions as a radiation plate for irradiating the object to be heated in the heating chamber 7 with radiant heat. At that time, the lower heater 23 is completely covered with the bottom panel 24 so as not to be exposed to the space in the heating chamber 7. Therefore, there is no smoke or fire due to the oil or the like coming out of the object to be heated dripping and adhering to the lower heater 23, and the lower heater 23 can be prevented from being soiled.

  On the other hand, when cooking the said to-be-heated material with superheated steam, the water in the tank 1 is supplied to the steam generator 4 via the tube 3 by the pump 2. Then, the water in the steam generator 4 is heated by the steam generator heater 5 having a U-shape rotated 90 degrees installed in the steam generator 4 to generate saturated steam. The generated saturated steam is blown out through the steam supply pipe 6 serving as the steam supply passage to the upper heater housing portion 8 placed on the heating chamber 7 and heated by the built-in upper heater 9 to be overheated. It becomes steam. The superheated steam is jetted downward into the heating chamber 7 from a plurality of steam outlets 11 provided on the top panel 10 of the lower heating chamber 7. Thus, the object to be heated placed on the tray 21 is cooked by the superheated steam sprayed downward into the heating chamber 7. Here, the said superheated steam means the steam heated to the overheated state of 100 degreeC or more.

  FIG. 5 is a plan perspective view of the grill. The upper heater 9 has a substantially symmetric shape with respect to the center line in the front-rear direction in the upper heater storage portion 8, and is arranged around the upper heater storage portion 8 in a meandering manner. In this way, the upper heater is used so that no burning occurs when the object to be heated is cooked only by radiant heat from the upper heater 9 and the lower heater 23 via the top panel 10 and the bottom panel 24 without using steam. Nine shapes are set.

  When cooking with superheated steam, as shown in FIGS. 3 and 5, the saturated water vapor generated by the steam generator 4 is blown out toward the upper heater 9 built in the upper heater housing 8. It is like that. At that time, a part of the upper heater 9 which is uniformly heated to about 500 ° C. to 600 ° C. is cooled by the sprayed 100 ° C. saturated steam, and temperature spots are generated in the upper heater 9. . As a result, temperature spots resulting from the temperature spots of the upper heater 9 also occur in the superheated steam in the upper heater housing portion 8, and burnout spots occur on the object to be heated. In addition, in FIG. 5, although the blower outlet of the steam supply pipe 6 is facing the convex part of the upper heater 9 which meanders, even if it is a case where it opposes a recessed part, it is located in the nearest place. A similar problem occurs because the location of the convex portion is cooled.

  Therefore, in the present embodiment, the upper heater 9 is shielded from the saturated water vapor blown from the steam supply pipe 6 between the upper heater 9 in the upper heater housing portion 8 and the outlet of the steam supply pipe 6. A shielding plate 25 is provided so that it does not directly hit. Therefore, the saturated water vapor blown out from the steam supply pipe 6 hits the shielding plate 25 and is dispersed right and left and up and down, so that it is prevented from directly hitting the upper heater 9. As a result, temperature spots do not occur in the upper heater 9, and as a result, it is possible to prevent spots from being generated on the object to be heated.

  Here, in the case where bumping occurs in the steam generator 4, the shielding plate 25 hangs hot water that has jumped out from the steam generator 4 through the steam supply pipe 6 directly on the upper heater 9, 11 also has a function of preventing entry into the heating chamber 7 from 11. Therefore, in the present embodiment, it is possible to prevent the failure of the upper heater 9 and the burning of the object to be heated due to the bumping.

  In the present embodiment, the shape of the shielding plate 25 is not particularly limited as long as it can shield the saturated steam blown from the steam supply pipe 6.

  For example, the shielding plate 25 is extended in a direction substantially orthogonal to the direction in which saturated steam is blown from the steam supply pipe 6, and is in close contact with the top surface of the upper heater storage 8 and the top panel 10 of the heating chamber 7. Thus, the saturated steam blown toward the upper heater 9 and the hot water from the steam generator 4 in which bumping has occurred can be more reliably shielded.

  Further, the shielding plate 25 is bent in a “V” shape or curved in a “U” shape in plan view and installed with the top portion facing the outlet of the steam supply pipe 6, and saturated steam is shielded. You may be made to guide to both sides of 25. Moreover, a clearance may be provided between the shielding plate 25 and the top surface of the upper heater housing 8 or the top panel 10 of the heating chamber 7 so that saturated water vapor is guided to the clearance. Further, the side of the shielding plate 25 where the gap is provided may be inclined to the side opposite to the steam supply pipe 6 side so that saturated water vapor is smoothly guided to the gap.

  In this way, by introducing the saturated water vapor after hitting the shielding plate 25 left and right or up and down, it is possible to prevent turbulent flow from occurring near the outlet of the steam supply pipe 6, and Saturated water vapor can be quickly distributed throughout. However, when the shielding plate 25 has a function of preventing the entry of the hot water into the heater housing 8 when bumping occurs in the steam generator 4, it is preferable not to provide the gap, the bending, or the bending. desirable.

  Further, the horizontal length of the shielding plate 25 is not limited to a specific length. The length of the shielding plate 25 can shield at least the saturated water vapor that is blown to the upper heater 9 that is in a range where defective baking occurs in the heated object due to the saturated water vapor blown from the outlet of the steam supply pipe 6. It only has to be long.

  By the way, if the shape of the upper heater 9 is such that it is away from the outlet in the vicinity of the outlet of the steam supply pipe 6, it is possible to prevent temperature spots from occurring in the upper heater 9. However, in that case, the symmetry with respect to the center line in the front-rear direction in the upper heater accommodating portion 8 of the upper heater 9 is lost, and the object to be heated is cooked only by radiant heat from the upper heater 9 and the lower heater 23. This is undesirable because it causes burnout. On the other hand, if the shielding plate 25 facing the outlet of the steam supply pipe 6 is provided as in the present embodiment, the object to be heated is cooked only by radiant heat from the upper heater 9 and the lower heater 23. Even when the object to be heated is cooked with superheated steam, it is possible to prevent the occurrence of burning spots on the object to be heated.

  When cooking the object to be heated as described above, the gas in the heating chamber 8 is guided from the exhaust port 26 into the upper heater accommodating portion 8 by the guide path 27 and accommodated in the upper heater. It is introduced into a catalyst housing part 29 that houses the catalyst 28 installed in the part 8. The gas deodorized and deodorized by the catalyst 28 is guided to the inflexible synthetic resin exhaust duct 32 through the connection path 30 and the flexible synthetic resin exhaust tube 31. . In addition, as the catalyst 28, what added palladium and platinum to the metal or the ceramic, etc. are used. The rear end of the exhaust duct 32 is opened, and cooling air for cooling electrical components such as the pump 2 from the cooling fan 33 flows into the exhaust duct 32. Thus, the high-temperature and high-pressure gas discharged from the inside of the heating chamber 8 is smoked and deodorized by the catalyst 28, cooled under reduced pressure in the exhaust tube 31 and the exhaust duct 32, and discharged from the exhaust / drain port 35. It is received by a dew receptacle (not shown).

  As described above, in the present embodiment, the steam is supplied from the steam supply pipe 6 between the outlet of the steam supply pipe 6 in the upper heater housing 8 and the upper heater 9 facing the outlet. A shielding plate 25 for shielding saturated water vapor is provided. Therefore, the saturated water vapor blown out from the steam supply pipe 6 hits the shielding plate 25 and is dispersed right and left and up and down, and is prevented from directly hitting the upper heater 9. As a result, temperature spots do not occur in the upper heater 9, and as a result, it is possible to prevent the spots from being heated in the heated object.

  At that time, the shape of the upper heater 9 is set in advance so that no burning occurs when the object to be heated is cooked only by radiant heat from the upper heater 9 and the lower heater 23 without using steam. Yes. Therefore, according to the present embodiment, when the object to be heated is cooked with radiant heat from the upper heater 9 and the lower heater 23 without using steam, or when the object to be heated is cooked with superheated steam, It is possible to prevent the occurrence of burning spots.

  Furthermore, when the bumper is generated in the steam generating device 4, the shielding plate 25 hangs the hot water that has jumped out of the steam generating device 4 directly on the upper heater 9 or enters the heating chamber 7 from the steam outlet 11. Can be prevented from entering. Accordingly, it is possible to prevent the upper heater 9 from being damaged due to the bumping and the burning of the object to be heated.

  Further, the shielding plate 25 is heated by the upper heater 9 and is heated to substantially the same temperature as the upper heater 9. Therefore, it is expected that the saturated steam blown out from the steam supply pipe 6 and hits the shielding plate 25 is heated by the shielding plate 25 to become superheated steam.

1 ... Tank,
2 ... pump,
4 ... Steam generator,
5 ... Steam generating heater,
6 ... steam supply pipe,
7 ... heating chamber,
8 ... Upper heater storage,
9 ... Upper heater,
10 ... Top panel,
11 ... Steam outlet,
12a, 12b ... Rail unit,
13: Front opening,
14 ... the door,
15 ... operation part,
21 ... saucer,
22 ... Lower heater housing,
23 ... Lower heater,
24 ... bottom panel,
25 ... shielding plate,
26 ... exhaust port,
27 ... Guidance route,
28 ... Catalyst,
29 ... Catalyst housing part,
30: Connection path,
31 ... exhaust tube,
32 ... exhaust duct,
33 ... Cooling fan,
35 ... Exhaust and drain port.

Claims (8)

A heating cabinet;
An upper heater housing located above the heating chamber;
An upper heater provided in the upper heater storage section;
A steam generator for generating saturated steam;
A steam supply passage for supplying saturated steam generated by the steam generator to the upper heater housing section,
The top surface of the heating chamber is provided with a steam supply hole for ejecting superheated steam heated and generated by the upper heater in the upper heater storage portion into the heating chamber,
A shielding plate that shields saturated water vapor that is blown from the opening and directly hits the upper heater is installed between the upper heater and the opening of the steam supply passage in the upper heater housing. Cooking cooker. The heating cooker according to claim 1, wherein
The shielding plate also has a function of preventing hot water in the steam generator from entering the upper heater housing portion through the steam supply passage when bumping occurs in the steam generator. A cooking device characterized by that. In the heating cooker according to claim 1 or 2,
The shielding plate extends in a direction substantially perpendicular to the direction of blowing out saturated steam from the steam supply passage, and is in close contact with the top surface of the upper heater storage portion and the top surface of the heating chamber. A heating cooker. In the heating cooker according to claim 1 or 2,
The cooking device according to claim 1, wherein the shielding plate is bent in a plan view and is installed with a top portion facing an outlet of the steam supply passage. In the heating cooker according to claim 1 or 2,
The said cooking plate is curving in planar view, The heating cooker characterized by the top part being installed facing the blower outlet of the said steam supply channel | path. In the heating cooker according to claim 1 or 2,
The cooking device according to claim 1, wherein the shielding plate is provided with a gap between the top plate of the upper heater storage portion. In the heating cooker according to claim 1 or 2,
The cooking device, wherein the shielding plate is installed with a gap between the top surface of the heating chamber. In the heating cooker according to claim 6 or 7,
The cooking device according to claim 1, wherein the shielding plate is installed with the side provided with the gap inclined to the side opposite to the steam supply passage side.

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