JP5284220B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, there is one that cooks food by heating the steam from a steam generator with a superheated steam generator to generate superheated steam and supplying the superheated steam to a heating chamber (for example, JP 2005-344967 (Patent Document 1)).

  In the heating cooker, by providing a circulation path for circulating the steam in the heating chamber using a circulation fan, the steam sucked from the heating chamber is reheated by the superheated steam generator, and the top surface of the heating chamber or Steam is supplied into the heating chamber from a steam outlet provided on the side surface.

  The heating cooker having such a configuration is provided with an upper duct on the upper side of the heating chamber, a superheated steam generator having a heater accommodated in the upper duct, and an upper duct and a duct provided on a side surface of the heating chamber. Are connected by a plurality of pipes to form a part of the circulation path. For this reason, the above-mentioned cooking device has problems that the structure of the circulation path is complicated and the cost is high, and that heat radiation to the outside is large and the thermal efficiency is poor. The circulation path through which the superheated steam of the heating cooker passes requires a seal structure for reliably preventing leakage of steam to the outside, and the more complicated the structure of the circulation path, the higher the manufacturing cost of the seal structure.

JP 2005-344967 A

  Then, the subject of this invention is providing the heating cooker which can simplify a duct structure which guides a vapor | steam in a heating chamber, can reduce cost, and can improve thermal efficiency.

In order to solve the above problems, the heating cooker of the present invention is:
A steam generator for generating steam;
A heating chamber for heating an object to be heated by steam supplied from the steam generator;
A steam duct that is disposed outside the heating chamber and guides the steam from the steam generator into the heating chamber;
The steam duct is fixed to a first duct portion fixed to the upper surface side of the heating chamber, a bent portion that bends from the side to the lower side of the first duct portion, and one side surface side of the heating chamber. A second duct portion connected to the first duct portion via the bent portion, and the first duct portion, the bent portion, and the second duct portion are integrally formed by a single plate member. And
The first duct portion includes a top surface portion, and a first side wall portion that covers between the outer edge of the top surface portion excluding the bent portion side and the upper surface of the heating chamber,
The second duct part has a side part and a second side wall part covering between the outer edge of the side part excluding the bent part side and the side surface of the heating chamber .

  According to the above configuration, the steam from the steam generator is guided into the heating chamber through the steam duct in which the first duct portion, the bent portion, and the second duct portion are integrally formed of a single plate member. The number of parts can be reduced, and the assembly is facilitated. Therefore, the duct structure for guiding the steam into the heating chamber can be simplified, and the cost can be reduced. In addition, the integrally formed steam duct has a larger area for covering the heating chamber with the steam duct than when the ducts are connected by a plurality of pipes, and heat radiation from the heating chamber to the outside is reduced. Since the heating chamber is heated, the thermal efficiency is improved, the cross-sectional area in the steam duct is widened, the pressure loss can be reduced, and the sealing material can be reduced. In addition, since the steam flow in the steam duct is uniform and uniform, steam can be supplied into the heating chamber without unevenness, and uneven baking can be reduced. Further, the steam duct serves to reinforce the strength of the heating chamber by attaching the integrally formed steam duct to the upper surface and one side surface of the heating chamber.

Moreover, in the heating cooker of one embodiment,
The first duct section, with a vertical cross section along the longitudinal direction of the upper Symbol heating chamber has a flared shape which is wider toward the bottom from the top side,
The second duct portion is horizontal cross section is a divergent shape widened toward the heating chamber side from the side surface side.

  According to the embodiment, the vertical cross section along the front-rear direction of the heating chamber of the first duct portion and the horizontal cross section of the second duct portion are divergently shaped, so that steam is bent from the single plate member at the bent portion. When manufacturing the duct, even if the side wall portions are provided on both sides of the bent portion, the side wall portions are easily bulged outward by bending, and the molding process is facilitated.

Moreover, in the heating cooker of one embodiment,
The bent portion of the steam duct covers an inclined surface portion connecting the top surface portion of the first duct portion and a side surface portion of the second duct portion, a side edge of the inclined surface portion, and the heating chamber. And it has the 3rd side wall part which connects between the 1st side wall part of the said 1st duct part, and the 2nd side wall part of the said 2nd duct part.

  According to the said embodiment, it covers between the inclined surface part which connects between the top | upper surface part of a 1st duct part, and the side part of a 2nd duct part, the side edge of the inclined surface part, and a heating chamber, and 1st When producing a steam duct by bending from a single plate member at a bent portion by a bent portion having a third side wall portion connecting between the first side wall portion of the duct portion and the second side wall portion of the second duct portion. In addition to being folded at the boundary between the top surface portion of the first duct portion and the inclined surface portion of the bent portion, and being bent at the boundary between the side surface portion of the second duct portion and the inclined surface portion of the bent portion, the third side wall portion swells outward, Wrinkles occur at two locations, the connecting portion between the first and third sidewall portions, and the connecting portion between the second and third sidewall portions. In this way, by dispersing wrinkles at two locations on both sides of the bent portion of the steam duct, the degree of wrinkles per location can be reduced and molding can be facilitated.

Moreover, in the heating cooker of one embodiment,
By wrinkling the third side wall portion of the bent portion of the steam duct, there is no break in the third side wall portion and in the vicinity of the third side wall portion.

  According to the above embodiment, the third side wall portion of the bent portion of the steam duct is wrinkled so that there is no cut in the vicinity of the third side wall portion and the third side wall portion, thereby eliminating the trouble of sealing the cut. Can be improved.

Moreover, in the heating cooker of one embodiment,
The first duct portion of the steam duct has a first flange portion extending outwardly along the upper surface of the heating chamber from an edge on the heating chamber side of the first side wall portion,
The second duct portion of the steam duct has a second flange portion extending outward along the side surface of the heating chamber from an edge of the second side wall portion on the heating chamber side,
The first flange portion and the second flange portion are provided with holes for inserting fixing bolts erected on the heating chamber, respectively.
At least one of the hole provided in the first flange portion or the hole provided in the second flange portion is a burring hole in which the hole flange portion protrudes outward.

  According to the above embodiment, the holes for inserting the fixing bolts standing on the heating chamber are provided in the first flange portion of the first duct portion and the second flange portion of the second duct portion of the steam duct, respectively. When a steam duct bent in an L shape is attached to the heating chamber by using a burring hole in which the hole flange portion protrudes outward from the hole of the first flange portion, the second flange portion side of the second duct portion After the fixing bolt on the side surface side of the heating chamber is inserted into this hole, the fixing bolt on the upper surface side of the heating chamber can be smoothly inserted into the burring hole on the first flange portion side of the first duct portion. Alternatively, when a steam duct bent in an L shape is attached to the heating chamber by using a burring hole in which the hole flange portion protrudes outward as a hole of the second flange portion of the second duct portion, the first duct portion After inserting the fixing bolt on the upper surface side of the heating chamber into the hole on the first flange portion side, smoothly insert the fixing bolt on the side surface side of the heating chamber into the burring hole on the second flange portion side of the second duct portion. can do. In addition, even if it uses the burring hole which the hole flange part protruded outward for both the hole of the 1st flange part of a steam duct, and the hole of a 2nd flange part, it has the same effect.

Moreover, in the heating cooker of one embodiment,
A steam inlet through which steam from the steam generator flows from the side opposite to the bent portion toward the second duct portion is provided in the first side wall portion of the first duct portion of the steam duct.

  According to the above embodiment, the steam from the steam generator from the steam inlet provided in the first side wall portion of the first duct portion of the steam duct toward the second duct portion from the side opposite to the bent portion of the steam duct. Therefore, after flowing in the first duct part of the steam duct along the upper surface of the heating chamber, the steam flows into the second duct part through the bent part, and the steam can flow smoothly in the steam duct. .

Moreover, in the heating cooker of one embodiment,
A plurality of steam outlets are provided on the side surface of the heating chamber covered by the second duct portion of the steam duct,
The minimum passage cross-sectional area in the bent portion of the steam duct is larger than the total opening area of the plurality of steam outlets on the side surface of the heating chamber.

  According to the above embodiment, by making the minimum passage cross-sectional area in the bent portion of the steam duct larger than the total opening area of the plurality of steam outlets on the side surface of the heating chamber, the pressure loss in the steam duct is reduced, Since the steam smoothly flows from the first duct portion of the steam duct into the second duct portion, the steam can be efficiently supplied into the heating chamber from the plurality of steam outlets on the side surface of the heating chamber.

Moreover, in the heating cooker of one embodiment,
Comprising a superheated steam generator for heating the steam from the steam generator to generate superheated steam;
The steam from the steam generator is guided by the steam duct into the heating chamber through the superheated steam generator.

  According to the above embodiment, the superheated steam having a temperature of 100 ° C. or more is supplied to the surface of the object to be heated by guiding the steam from the steam generating device into the heating chamber via the superheated steam generating device by the steam duct. Then, the superheated steam adhering to the surface of the object to be heated is condensed to give a large amount of latent heat of condensation to the object to be heated. As a result, heat can be efficiently transferred to the object to be heated, and the condensed water adheres to the surface of the food that is the object to be heated, and salt and oil are dripped together with the condensed water, thereby reducing the salt and oil in the food. Can be reduced.

  As is clear from the above, according to the heating cooker of the present invention, it is possible to simplify the duct structure that guides the steam into the heating chamber, reduce the cost, and realize the heating cooker that can improve the thermal efficiency.

FIG. 1 is a front perspective view of a heating cooker according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the cooking device. FIG. 3 is a top view of the heating chamber and the front panel of the cooking device. FIG. 4 is a left side view of the heating chamber and the front panel. FIG. 5 is a right side view of the heating chamber and the front panel. FIG. 6 is a right side view of the heating chamber with a steam duct and a circulation unit attached thereto. FIG. 7 is a front view of the steam duct. FIG. 8 is a top view of the steam duct. FIG. 9 is a left side view of the steam duct. FIG. 10 is a right side view of the steam duct. FIG. 11 is a cross-sectional view of the steam duct as viewed from line XI-XI in FIG. 12 is a cross-sectional view of the steam duct as viewed from the line XII-XII in FIG. FIG. 13 is a cross-sectional view of the steam duct as seen from line XIII-XIII in FIG. FIG. 14 is a top view of the heating chamber with a steam duct and a circulation unit attached thereto. 15 is a cross-sectional view taken along line XV-XV in FIG. 16 is a cross-sectional view taken along line XVI-XVI in FIG.

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

  FIG. 1: has shown the front perspective view of the heating cooker of one Embodiment of this invention.

  As shown in FIG. 1, the cooking device of this embodiment has a door 2 attached to the front surface of a rectangular parallelepiped casing 1 that rotates about the lower end side. A handle 3 is attached to the upper portion of the door 2 and a heat-resistant glass 4 is attached to the approximate center of the door 2. An operation panel 5 is provided on the right side of the door 2. The operation panel 5 has a color liquid crystal display unit 6 and a dial 7. An exhaust duct 8 is provided on the upper side of the casing 1 and on the right rear side. Further, a dew receptacle 9 is detachably attached below the door 2 of the casing 1.

  FIG. 2 shows a schematic diagram of a longitudinal section of the cooking device. As shown in FIG. 2, the water supplied from the water tank 11 is heated by the steam generator 12 to generate saturated water vapor. The saturated steam generated by the steam generator 12 is supplied to the heating chamber 13 side of the steam inlet 15 of the circulation unit 14 attached to the right side surface of the heating chamber 13 via a steam supply passage (not shown). The

  A steam supply pipe 34 connected to the steam supply passage is attached in the vicinity of the steam inlet 15 of the circulation unit 14 so as to be parallel to the right side surface of the heating chamber 13. A circulation fan 18 is disposed in the circulation unit 14 so as to face the vapor suction port 15. The circulation fan 18 is rotationally driven by a fan motor 19.

  A steam duct 100 bent in an L shape is attached so as to cover the upper surface and the left side surface of the heating chamber 13. The steam duct 100 includes a first duct portion 110 fixed to the upper surface side of the heating chamber 13, a bent portion 120 that bends downward from the left side of the first duct portion 110, and a left side surface side of the heating chamber 13. A second duct portion 130 that is fixed and is continuous with the first duct portion 110 via the bent portion 120 is provided.

  The superheated steam generation heater 20 is accommodated in the first duct portion 110 of the steam duct 100. The superheated steam generation device 21 is configured by the first duct portion 110 of the steam duct 100 and the superheated steam generation heater 20. Note that the superheated steam generator may be provided separately from the steam duct.

  The right side of the first duct portion 110 of the steam duct 100 communicates with the steam supply port 22 provided in the upper part of the circulation unit 14. A plurality of first steam outlets 24 are provided on the top surface of the heating chamber 13, and the first duct portion 110 of the steam duct 100 communicates with the inside of the heating chamber 13 through the first steam outlet 24. ing. On the other hand, the second duct portion 130 of the steam duct 100 communicates with the inside of the heating chamber 13 through a plurality of second steam outlets 25 provided on the left side surface of the heating chamber 13.

  A gap between the heating chamber 13 and the steam duct 100 is sealed with a heat resistant resin or the like. The heating chamber 13 and the steam duct 100 are covered with a heat insulating material except for the front opening of the heating chamber 13.

  The circulation path of the steam is formed by the circulation unit 14, the superheated steam generator 21, the heating chamber 13, and the connecting member that connects them. And the saturated water vapor | steam produced | generated with the steam generator 12 is supplied to the boundary part with the heating chamber 13 of the circulation unit 14 in this circulation path.

  A magnetron (not shown) is disposed below the heating chamber 13. Microwaves generated by the magnetron are guided to the lower center of the heating chamber 13 by a waveguide (not shown), and are stirred upward by a rotating antenna 38 driven by a motor 37 toward the upper side in the heating chamber 13. The object to be heated 27 is heated by being emitted.

  3 shows a top view of the heating chamber 13 and the front panel 10 of the heating cooker, and a plurality of first steam outlets 24 are provided on the upper surface of the heating chamber 13, as shown in FIG. .

  FIG. 4 shows a left side view of the heating chamber 13 and the front panel 10. As shown in FIG. 4, a plurality of second steam outlets 25 are provided on the left side of the heating chamber 13.

  Further, FIG. 5 shows a right side view of the heating chamber 13 and the front panel 10. As shown in FIG. 5, a suction port 28 composed of a plurality of holes is provided on the right side surface of the heating chamber 13. As shown in FIG. 6, the steam duct 100 is attached so as to cover the upper surface and the left side surface of the heating chamber 13, and the circulation unit 14 is configured to cover the suction port 28 (shown in FIG. 5) on the right side surface of the heating chamber 13. It is attached.

  When cooking with superheated steam in the cooking device having the above configuration, the superheated steam generating heater 20 shown in FIG. 2 is turned on and the circulation fan 18 is driven to rotate. Thus, the saturated steam supplied from the steam generator 12 to the upstream side in the vicinity of the steam suction port 15 of the circulation unit 14 enters the steam suction port 15 into the circulation unit 14 which is in a negative pressure due to the rotation of the circulation fan 18. And is blown out from the steam supply port 22 into the superheated steam generator 21. And it is heated by the superheated steam production | generation heater 20 of the superheated steam production | generation apparatus 21, and becomes superheated steam. A part of this superheated steam blows downward into the heating chamber 13 from a plurality of first steam outlets 24 provided on the top surface of the lower heating chamber 13. Further, another part of the superheated steam is blown out into the heating chamber 13 from the second steam outlet 25 of the heating chamber 13 through the steam duct 100.

  Then, the superheated steam supplied into the heating chamber 13 heats the heated object 27 mounted on the net 40 on the tray 30, and then faces the steam inlet 15 of the circulation unit 14 on the right wall surface of the heating chamber 13. Then, the air is sucked into the circulation unit 14 from the suction port 28 formed in this manner. Then, the circulation of returning to the heating chamber 13 through the circulation path again is repeated.

  On the other hand, when performing the operation | movement which heats or heats the to-be-heated material 27 with non-superheated steam, while turning off the superheated steam production | generation heater 20, the circulation fan 18 is stopped. Then, since the circulation fan 18 is stopped, the circulation air flow is not generated in the circulation path, and the saturated steam supplied from the steam generator 12 to the upstream side in the vicinity of the steam suction port 15 of the circulation unit 14 is It is not forcibly sucked into the circulation unit 14. Thereby, the to-be-heated material 27 is steamed or warmed by the saturated water vapor that naturally flows into the heating chamber 13 by the vapor pressure.

  Here, on the left wall surface and the right wall surface in the heating chamber 13, as shown in FIG. 2, locking portions 39 a, 39 b, 39 c that lock both ends of the tray 30 are provided in three stages in the vertical direction. Yes. The steam supply pipe 34 is arranged so as to be located slightly above the upper locking portion 39a. In the “steaming warming mode”, when the two trays 30 loaded with the object 27 to be heated are arranged in the upper stage and the middle stage, all the nozzles of the steam supply pipes 34 installed in the steam introduction chamber 36 (see FIG. The left side opening of the circular portion of No. 34 is inclined downward in the direction of the heating chamber 13. In this way, the saturated water vapor drawn from the diagonally downward nozzle of the steam supply pipe 34 is applied to the heated object 27 regardless of the position of the tray 30 on which the heated object 27 is mounted. Can do. Therefore, it is possible to prevent steaming spots and warming spots from being generated in the upper-middle two-stage heated object 27 without operating the blowing direction from the nozzle of the steam supply pipe 34.

  FIG. 7 shows a front view of the steam duct 100. As shown in FIG. 7, the steam duct 100 includes a first duct portion 110 fixed to the upper surface side of the heating chamber 13 (shown in FIG. 2), A bent portion 120 that bends from the left side to the lower side of the first duct portion 110 and a second duct portion 130 that is fixed to the left side surface of the heating chamber 13 and continues to the first duct portion 110 via the bent portion 120. And have. The first duct part 110, the bent part 120, and the second duct part 130 are integrally formed of a single plate member.

  8 shows a top view of the steam duct 100. As shown in FIG. 8, the first duct portion 110 of the steam duct 100 includes a top surface portion 111 and a bent portion 120 side of the top surface portion 111. It has the 1st side wall part 112 which covers between the outer edge except and the upper surface of the heating chamber 13 (shown in FIGS. 2-6). Further, the bent portion 120 of the steam duct 100 includes an inclined surface portion 121 connecting the top surface portion 111 of the first duct portion 110 and the side surface portion 131 of the second duct portion 130 shown in FIG. And a third side wall part 122 that covers the space between the first side wall part 112 of the first duct part 110 and the second side wall part 132 of the second duct part 130.

  FIG. 9 shows a left side view of the steam duct 100. As shown in FIG. 9, the second duct portion 130 of the steam duct 100 includes a side surface portion 131 and a bent portion 120 side of the side surface portion 131. And a second side wall portion 132 that covers a space between the outer edge excluding the left side of the heating chamber 13 (shown in FIGS. 2 to 6). In addition, below the side surface part 131 of the 2nd duct part 130, the inclined surface 131a which became narrow gradually toward the downward direction between the left side surfaces of the heating chamber 13 is formed.

  FIG. 10 shows a right side view of the steam duct 100. In FIG. 10, the same components as those in the steam duct 100 shown in FIGS. 7 to 9 are denoted by the same reference numerals.

  As shown in FIG. 10, a plurality of steam inlets 140 into which steam flows into the first side wall portion 112 of the first duct portion 110 of the steam duct 100 from the side opposite to the bent portion 120 toward the second duct portion 130. Is provided. This steam inlet 140 is connected to the steam supply port 22 of the circulation unit 14 (shown in FIG. 2).

  Moreover, FIG. 11 has shown sectional drawing of the steam duct 100 seen from the XI-XI line of FIG. In FIG. 11, the same components as those of the steam duct 100 shown in FIGS. 7 to 9 are given the same reference numerals.

  As shown in FIG. 11, the steam duct 100 has the smallest passage cross-sectional area in the bent portion 120 in contact with the upper corner portion of the heating chamber 13, and the minimum passage cross-sectional area in the bent portion 120 is the heating chamber. The total opening area of the plurality of second steam outlets 25 on the 13 side surfaces is larger.

  By making the minimum passage sectional area in the bent portion 120 of the steam duct 100 larger than the total opening area of the plurality of second steam outlets 25 on the side surface of the heating chamber 13, the pressure loss in the steam duct 100 is reduced. Since the steam smoothly flows from the first duct portion 110 into the second duct portion 130, the steam is efficiently supplied into the heating chamber 13 from the plurality of second steam outlets 25 on the side surface of the heating chamber 13. Can do.

  Next, FIG. 12 shows a cross-sectional view of the steam duct 100 seen from the line XII-XII in FIG. 8, and FIG. 13 shows a cross-sectional view of the steam duct 100 seen from the line XIII-XIII in FIG. In FIG. 12, the same components as those of the steam duct 100 shown in FIGS. 7 to 9 are denoted by the same reference numerals.

  As shown in FIG. 12, the first duct portion 110 has a trapezoidal shape as an example of a divergent shape that becomes wider from the top surface portion 111 side toward the lower side. Moreover, as shown in FIG. 13, the 2nd duct part 130 is carrying out the trapezoid shape as an example of the divergent shape widened toward the heating chamber 13 side (lower side of FIG. 13) from the side part 131 side. .

  Since the vertical cross section along the front-rear direction of the heating chamber 13 of the first duct part 110 and the horizontal cross section of the second duct part 130 are trapezoidal, the steam duct 100 is bent from the single plate member at the bent part 120. , The third side wall portions 122 (shown in FIGS. 7 and 8) on both sides of the bent portion 120 are likely to bulge outward, the direction of wrinkles generated can be controlled, and molding processing is facilitated. .

  In addition, in this embodiment, although the vertical cross section along the front-back direction of the heating chamber 13 of the 1st duct part 110 and the horizontal cross section of the 2nd duct part 130 were made into the trapezoid shape, Alternatively, the side wall portion may be recessed toward the inside.

  14 shows a top view of the state where the steam duct 100 and the circulation unit 14 are attached to the heating chamber 13, FIG. 15 shows a cross-sectional view taken along line XV-XV in FIG. 14, and FIG. The cross-sectional view seen from the XVI-XVI line is shown. 14 to 16, the same components as those of the heating cooker shown in FIG. 2 are denoted by the same reference numerals.

  According to the cooking device having the above-described configuration, the first duct portion 110, the bent portion 120, and the second duct portion 130 are formed from the steam generator 12 via the steam duct 100 integrally formed of a single plate member. Since the steam is guided into the heating chamber 13, the number of parts can be reduced and the assembly is facilitated. Therefore, the duct structure for guiding the steam into the heating chamber 13 can be simplified, and the cost can be reduced. In addition, the integrally formed steam duct 100 has a larger area for covering the heating chamber 13 with the steam duct 100 than when the ducts are connected by a plurality of pipes, and heat radiation from the heating chamber 13 to the outside is reduced. Since the heating chamber 13 is heated from the steam duct 100 side, the thermal efficiency is improved, the cross-sectional area in the steam duct 100 is widened, the pressure loss can be reduced, and the sealing material can be reduced. In addition, since the steam flow in the steam duct 100 is uniform and uniform, the steam can be supplied to the heating chamber 13 without unevenness, and uneven baking can be reduced. Moreover, the vapor | steam duct 100 can reinforce the intensity | strength of the heating chamber 13 by attaching the vapor | steam duct 100 integrally formed by the single board member to the upper surface and left side surface of the heating chamber 13. FIG.

  Moreover, as shown in FIGS. 7-13, the inclined surface part 121 which connects between the top surface part 111 of the 1st duct part 110, and the side part 131 of the 2nd duct part 130, the side edge of the inclined surface part 121, and heating By a bent portion 120 that covers the space between the storage chamber 13 and has a third side wall portion 122 that connects the first side wall portion 112 of the first duct portion 110 and the second side wall portion 132 of the second duct portion 130. When the steam duct 100 is manufactured by bending from a single plate member at the bent portion 120, the second duct portion 130 is bent at the boundary between the top surface portion 111 of the first duct portion 110 and the inclined surface portion 121 of the bent portion 120. Therefore, the third side wall portion 122 of the bent portion 120 bulges outward, and the connecting portion between the first side wall portion 112 and the third side wall portion 122 is connected to the second side wall portion 122 and the second side wall portion 122. Side wall 132 and wrinkle occurs in two places of the connecting portion of the third side wall portion 122. Thus, by dispersing wrinkles at two locations on both sides of the bent portion 120 of the steam duct 100, the degree of wrinkles per location can be reduced, and molding can be facilitated.

  In addition, as shown in FIG. 7, the third side wall portion 122 of the bent portion 120 of the steam duct 100 is wrinkled so that the third side wall portion 122 and the vicinity of the third side wall portion 122 are not cut. The sealing performance can be improved by eliminating the trouble of sealing the cut.

  Further, as shown in FIGS. 8 and 9, holes 113a to 113c for inserting fixing bolts erected in the heating chamber 13 are provided in the first flange portion 113 of the first duct portion 110, and the second duct is provided. A hole 133a for inserting a fixing bolt erected on the heating chamber 13 is provided in the second flange part 133 of the part 130, and the hole flange part protrudes upward from the holes 113a to 113c of the first flange part 113. When the steam duct 100 bent in an L shape is attached to the heating chamber 13 by forming a burring hole, the fixing bolt on the side surface side of the heating chamber 13 is inserted into the hole 133a on the second flange portion 133 side of the second duct portion 130. It is possible to easily insert the fixing bolt on the upper surface side of the heating chamber 13 into the holes 113a to 113c on the first flange portion 113 side of the first duct portion 110. In addition, the fixing bolt of the heating chamber 13 can be more smoothly inserted by making the hole 113a of the first flange portion 113 a long hole whose longitudinal direction is the left-right direction.

  On the contrary, when the steam duct 100 bent in an L shape is attached to the heating chamber by using a burring hole in which the hole flange portion protrudes outward in the hole 133a of the second flange portion 133, the first duct After the fixing bolts on the upper surface side of the heating chamber 13 are inserted into the holes 113a to 113c on the first flange portion 113 side of the portion 110, the heating chamber 13 is inserted into the holes 133a on the second flange portion 133 side of the second duct portion 130. The fixing bolt on the side can be smoothly inserted. Moreover, the same effect can be obtained by using a burring hole in which the hole flange portion protrudes outward as both the hole of the first flange portion and the hole of the second flange portion of the steam duct.

  Further, from the steam inlet 140 (shown in FIG. 10) provided in the first side wall 112 of the first duct part 110 of the steam duct 100 to the second duct part 130 from the side opposite to the bent part 120 of the steam duct 100. Since the steam flows in, the steam flows in the first duct part 110 of the steam duct 100 along the upper surface of the heating chamber 13, and then the steam flows in the second duct part 130 through the bent part 120. Steam can flow smoothly through 100.

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

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

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

DESCRIPTION OF SYMBOLS 1 ... Casing 2 ... Door 3 ... Handle 4 ... Heat-resistant glass 5 ... Operation panel 6 ... Color liquid crystal display part 7 ... Dial 8 ... Exhaust duct 9 ... Dew receptacle 11 ... Water tank 12 ... Steam generator 13 ... Heating chamber 14 ... Circulation unit 15: Steam inlet 18 ... Circulating fan 19 ... Fan motor 20 ... Superheated steam generation heater 21 ... Superheated steam generator 22 ... Steam supply port 24 ... First steam outlet 25 ... Second steam outlet 27 ... Heated Material 28 ... Suction port 30 ... Tray 34 ... Steam supply pipe 36 ... Steam introduction chamber 37 ... Motor 38 ... Rotating antenna 39a, 39b, 39c ... Locking part 40 ... Net 100 ... Steam duct 110 ... First duct part 111 ... Top Surface part 112 ... 1st side wall part 113 ... 1st flange part 120 ... Bending part 121 ... Inclined surface part 122 ... 3rd side wall part 130 ... 2nd duct part 131 ... Side surface part 1 1a ... inclined surfaces 132 ... second side wall portion 133: second flange portion 140 ... steam inlet

Claims (8)

A steam generator for generating steam;
A heating chamber for heating an object to be heated by steam supplied from the steam generator;
A steam duct that is disposed outside the heating chamber and guides the steam from the steam generator into the heating chamber;
The steam duct is fixed to a first duct portion fixed to the upper surface side of the heating chamber, a bent portion that bends from the side to the lower side of the first duct portion, and one side surface side of the heating chamber. A second duct portion connected to the first duct portion via the bent portion, and the first duct portion, the bent portion, and the second duct portion are integrally formed by a single plate member. And
The first duct portion includes a top surface portion, and a first side wall portion that covers between the outer edge of the top surface portion excluding the bent portion side and the upper surface of the heating chamber,
The said 2nd duct part has a side part and the 2nd side wall part which covers between the outer edge except the said bending part side of the side part, and the side surface of the said heating chamber, The heating cooker characterized by the above-mentioned . The heating cooker according to claim 1, wherein
The first duct section, with a vertical cross section along the longitudinal direction of the upper Symbol heating chamber has a flared shape which is wider toward the bottom from the top side,
The second duct portion, the cooking device of horizontal cross-section, characterized in that has a flared shape which is wider toward the heating chamber side from the side surface side. The heating cooker according to claim 1 or 2,
The bent portion of the steam duct covers an inclined surface portion connecting the top surface portion of the first duct portion and a side surface portion of the second duct portion, a side edge of the inclined surface portion, and the heating chamber. And it has a 3rd side wall part which connects between the 1st side wall part of the said 1st duct part, and the 2nd side wall part of the said 2nd duct part, The heating cooker characterized by the above-mentioned. In the heating cooker according to any one of claims 1 to 3,
A heating cooker characterized in that the third side wall portion and the vicinity of the third side wall portion are not cut by wrinkling the third side wall portion of the bent portion of the steam duct. In the heating cooker according to any one of claims 1 to 4,
The first duct portion of the steam duct has a first flange portion extending outwardly along the upper surface of the heating chamber from an edge on the heating chamber side of the first side wall portion,
The second duct portion of the steam duct has a second flange portion extending outward along the side surface of the heating chamber from an edge of the second side wall portion on the heating chamber side,
The first flange portion and the second flange portion are provided with holes for inserting fixing bolts erected on the heating chamber, respectively.
At least one of the hole provided in the first flange part or the hole provided in the second flange part is a burring hole in which the hole flange part protrudes outward. In the heating cooker according to any one of claims 1 to 5,
A steam inlet through which the steam from the steam generator flows from the side opposite to the bent portion toward the second duct portion is provided in the first side wall portion of the first duct portion of the steam duct. A cooking device characterized by. In the heating cooker according to any one of claims 1 to 6,
A plurality of steam outlets are provided on the side surface of the heating chamber covered by the second duct portion of the steam duct,
The cooking device according to claim 1, wherein a minimum passage sectional area in the bent portion of the steam duct is larger than a total opening area of the plurality of steam outlets on a side surface of the heating chamber. In the heating cooker according to any one of claims 1 to 7,
Comprising a superheated steam generator for heating the steam from the steam generator to generate superheated steam;
A steam cooker, wherein the steam from the steam generator is guided by the steam duct into the heating chamber through the superheated steam generator.

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