JP2008025861A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of preventing degradation of a finishing state in cooking. <P>SOLUTION: This heating cooker 1 comprising a heating chamber 20 for placing a heated object H, a jetting port 55 for jetting out steam into the heating chamber 20, a suction port 25 formed on a peripheral wall 20b of the heating chamber 20, a circulating passage 60 connecting the jetting port 55 and the suction port 25, a blower fan 28 disposed in the circulating passage 60 for sucking the air from the suction port 25 and jetting the air from the jetting port 55, and a steam generating device 40 for supplying steam to the circulating passage 60, and cooking the heated object H by the steam jetted from the jetting port 55, further comprises drain outlets 25a-25d formed on the peripheral wall 20b near a lower end of the circulating passage 60, and a draining member 70 having a guide face 70a inclined with respect to the horizontal direction, and kept into contact with the peripheral wall 20b in a state that the guide face 70a and the drain outlets 25a-15d are intersected with each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device for cooking by heating an object to be heated using steam.

  A conventional cooking device is disclosed in Patent Document 1. This heating cooker uses superheated steam as a heating medium, and an object to be heated is placed on a tray placed in a heating chamber. A water tank is detachably provided on the side of the heating chamber, and water is supplied from the water tank to the steam generator through a water supply channel. The steam generator generates steam from the supplied water and sends it to the steam temperature raising device. The steam temperature raising device further heats the steam to generate superheated steam, and jets the superheated steam to the heating chamber through the jet port so that the object to be heated is cooked. Moreover, cooking of a to-be-heated object can be performed by ejecting saturated steam into a heating chamber.

  Japanese Patent Application No. 2006-178039 describes a heating cooker in which an intake port is provided on the back wall of a heating chamber, and a steam generator is connected to a circulation path that connects the intake port and the fumarole port. FIG. 8 shows a side cross-sectional view of the rear portion of the heating chamber of the cooking device. The intake port 25 is provided in the back wall 20 b of the heating chamber 20, and the circulation path 60 is formed to extend upward from behind the intake port 25.

  A blower fan 28 is disposed in the circulation path 60. The blower fan 28 is a sirocco fan and has an impeller 28b connected to a motor 28a. Further, a shielding plate 29a having an opening 29b is provided in the circulation path 60, and the housing 29 of the blower fan 28 is formed by the lower end surface and the back surface of the circulation path 60 and the shielding plate 29a. As a result, the blower fan 28 takes in air through the air inlet 25 and the opening 29b and exhausts upward. The steam generator is connected to the front side of the shielding plate 29a on the suction side of the blower fan 28.

When the blower fan 28 is driven, steam is taken into the circulation path 60 from the steam generator, and the steam in the heating chamber 20 circulates through the circulation path 60. Thus, the steam is further heated by the steam temperature raising device, and the temperature of the steam can be raised efficiently.
JP 2005-48987 A

  However, according to the conventional cooking device, the wall surface of the circulation path 60 is kept at a low temperature because it faces the outside air. For this reason, when superheated steam flows into the circulation path 60 through the intake port 25, it contacts with the wall surface of the circulation path 60 and dew condensation occurs. For this reason, when the dew condensation water W collects in the lower part of the circulation path 60, it may contact with the impeller 28b of the ventilation fan 28, and a water droplet may distribute | circulate through the circulation path 60 and may be poured on to a to-be-heated object from a jet nozzle. . Thereby, there existed a problem which the finishing state of the cooking of a to-be-heated material worsened.

  In particular, when cooking is performed with saturated steam of 100 ° C. or less, condensed water W is likely to be generated, and it is difficult to evaporate water droplets with a steam temperature raising device. For this reason, the frequency which the finishing state of the cooking of a to-be-heated material deteriorates becomes high.

  An object of this invention is to provide the heating cooker which can prevent the deterioration of the finishing state of cooking.

  In order to achieve the above object, the present invention provides a heating chamber in which an object to be heated is installed, an air outlet that ejects steam into the heating chamber, an air inlet that opens in a peripheral wall of the heating chamber, the air outlet, and the air intake A circulation path that communicates with the mouth, a blower fan that is disposed in the circulation path and sucks air from the intake port and blows out from the blower port, and a steam generator that supplies steam to the circulation path, In the heating cooker that cooks the object to be heated by the steam blown from the fumarole opening, the discharge opening provided in the vicinity of the lower end of the circulation path that opens in the peripheral wall, and the guide surface intersecting the drain opening A drainage member disposed in the heating chamber in contact with the peripheral wall is provided.

  According to this configuration, the steam generated by the steam generator flows into the circulation path by driving the blower fan, and the steam in the heating chamber flows into the circulation path from the intake port provided on the peripheral wall of the heating chamber. Steam flowing through the circulation path is ejected from the fumarole into the heating chamber, and the object to be heated is cooked. The steam flowing into the circulation path contacts the wall surface of the circulation path and condenses. This condensed water flows down on the lower end surface of the circulation path, and is drained into the heating chamber from the drainage port formed in the peripheral wall of the heating chamber provided with the intake port, along the guide surface of the drainage member. In addition, the surrounding wall of a heating chamber consists of the side wall and back wall of a heating chamber formed in a plane or a curved surface.

  Further, the present invention is characterized in that, in the cooking device having the above-described configuration, the guide surface is inclined with respect to the horizontal. According to this configuration, the condensed water drained through the guide surface flows down in the heating chamber due to gravity.

  Moreover, the present invention is characterized in that, in the cooking device having the above-described configuration, the steam generator is connected between the blower fan and the intake port of the circulation path. According to this configuration, when the blower fan is driven, the steam of the steam generator is sucked into the circulation path from the suction side of the blower fan.

  Further, the present invention is characterized in that, in the cooking device having the above-described configuration, the intake port includes a plurality of small holes, and the drain port having the same diameter as the intake port is connected to the intake port.

  Further, the present invention is the heating cooker having the above-described configuration, wherein the guide surface is inclined so that a side away from the drain port along the peripheral wall is lowered, and is formed in a mountain shape extending in two directions from the drain port. It is said. According to this configuration, the dew condensation water on the lower end surface of the circulation path is guided in the left-right direction along the guide surface of the drainage member when the drainage port is viewed in front.

  Moreover, the present invention is characterized in that, in the cooking device having the above-described configuration, the guide surface is inclined so that a side away from the peripheral wall is lowered. According to this structure, the dew condensation water on the lower end surface of the circulation path is guided forward through the guide surface of the drainage member when the drainage port is viewed in front.

  Further, the present invention is characterized in that, in the cooking device having the above-described configuration, the lower end surface of the circulation path is inclined so that the heating chamber side is lowered. According to this structure, the dew condensation water on the lower end surface of the circulation path flows down and is guided to the drain outlet.

  According to the present invention, in the cooking device configured as described above, the blower fan includes a centrifugal fan having a rotating shaft perpendicular to the peripheral wall, and a housing that guides the exhaust of the centrifugal fan upward into the circulation path. The housing is characterized in that a hole is provided at the lower end on the peripheral wall side.

  According to this configuration, the blower fan composed of the centrifugal fan sucks air in the axial direction perpendicular to the peripheral wall of the heating chamber provided with the drain port and exhausts it in the circumferential direction. Exhaust air from the blower fan is guided upward by the housing. A lower end of the side wall of the housing on the drain outlet side is opened by a hole, and condensed water accumulated in the housing flows out of the housing through the hole. In addition, a part of the exhaust in the circumferential direction of the centrifugal fan passes through the hole and pushes condensed water out of the housing. Condensed water that has flowed out of the housing is drained from a drain outlet.

  Moreover, the present invention is characterized in that, in the cooking device configured as described above, a lower end surface of the housing is formed of a lower end surface of the circulation path.

  Further, the present invention is characterized in that the heating cooker having the above-described configuration includes a high-frequency generator that supplies a high frequency to the heating chamber. According to this configuration, when the high frequency generator is driven, high frequency is supplied to the heating chamber, and high frequency heating cooking is performed. The intake port and the drain port provided on the wall surface of the heating chamber are formed with a small diameter to prevent high-frequency leakage.

  Further, the present invention is the heating cooker having the above-described configuration, wherein the drainage member is made of an insulator, and includes a tray placed at a position where the object to be heated is placed and abuts the drainage member during cooking. It is a feature. According to this configuration, a gap is formed between the tray and the peripheral wall of the heating chamber in which the drain outlet is arranged by the drain member.

  According to the present invention, the drainage port is provided near the lower end of the circulation path of the peripheral wall of the heating chamber where the inlet port is formed, and the drainage member is disposed in contact with the peripheral wall so that the guide surface of the drainage member and the drainage port intersect. The condensed water on the lower end surface of the circulation path is easily drained into the heating chamber through the drainage member. For this reason, dew condensation water is not stored in the circulation path, and water droplets do not pour onto the object to be heated from the fumarole. Accordingly, it is possible to prevent deterioration in the finished state of cooking.

  According to the present invention, since the guide surface is inclined with respect to the horizontal, the dew condensation water on the guide surface flows down in the heating chamber due to gravity. For this reason, the dew condensation water is easily drained continuously from the drain through the guide surface.

  According to the present invention, since the steam generator is connected between the blower fan and the intake port of the circulation path, the steam is easily sucked into the circulation path from the steam generation apparatus. Therefore, pressure loss can be reduced and air blowing efficiency can be improved. Further, since the distance between the air inlet and the blower fan is increased, the steam is easily cooled. For this reason, it is possible to easily drain the condensed water that is condensed on the path between the air inlet and the blower fan and easily accumulates below the blower fan by the drainage member.

  Further, according to the present invention, since the intake port is composed of a large number of small holes, high-frequency heating can be performed by the high-frequency generator. In addition, since the drain port having substantially the same diameter as the intake port is connected to the intake port, the pressure loss can be reduced by forming the intake port near the lower end of the circulation path.

  Further, according to the present invention, the guide surface is inclined so that the side away from the drain port along the peripheral wall is lowered, and is formed in a mountain shape extending in two directions from the drain port. Can be led indoors.

  Further, according to the present invention, the guide surface is inclined so that the side away from the peripheral wall is lowered, so that the dew condensation water can be easily introduced into the heating chamber.

  Further, according to the present invention, since the lower end surface of the circulation path is inclined so that the heating chamber side is lowered, the dew condensation water on the lower end surface of the circulation path can be drained more reliably.

  Further, according to the present invention, since the hole is provided at the lower end of the housing on the drain outlet side that guides the exhaust air of the centrifugal fan upward, the condensed water accumulated in the housing flows out from the hole. Further, a part of the exhaust in the circumferential direction of the centrifugal fan passes through the hole and pushes the dew condensation water. Therefore, the condensed water can be drained more reliably.

  According to the present invention, since the lower end surface of the housing is composed of the lower end surface of the circulation path, the housing can be formed easily. Further, when the lower end surface of the circulation path is inclined, the condensed water in the housing can be easily drained.

  According to the present invention, since the high frequency generator for supplying high frequency to the heating chamber is provided, the drain outlet is formed with a small diameter in order to prevent high frequency leakage. For this reason, the dew condensation water can be easily drained by the drainage member from the drain port where the water does not easily flow out by the surface tension.

  Further, according to the present invention, the drainage member is made of an insulator, and the tray on which the object to be heated is placed is disposed at a position where it comes into contact with the drainage member during cooking. Can be easily prevented.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing the cooking device of the first embodiment. The cooking device 1 is provided with an operation panel 11 in the upper part of the front surface of a rectangular parallelepiped cabinet 10. A door 12 pivotally supported at the lower end side is provided below the operation panel 11. A handle 13 is provided at the top of the door 12, and a heat-resistant glass window 14 is fitted in the center.

  FIG. 2 is an external perspective view showing a state where the door 12 of the heating cooker 1 is opened. A rectangular parallelepiped heating chamber 20 is provided in the cabinet 10. The heating chamber 20 has an opening 20a on the front side facing the door 12, and a back wall 20b, both side walls 20c and 20d, a bottom wall 20e and a ceiling wall 20f (all of which are shown in FIG. 4) are formed of stainless steel plates. Yes.

  The door 12 is formed of a stainless steel plate on the side facing the heating chamber 20. A heat insulating material (not shown) is provided around the heating chamber 20 and the inside of the door 12 to insulate the inside of the heating chamber 20 from the outside. Under the side walls 20c and 20d (see FIG. 4) of the heating chamber 20, a substantially rectangular side surface steam outlet 22 extending substantially horizontally is provided.

  FIG. 3 is a schematic configuration diagram showing a basic configuration of the heating cooker 1. A water tank 30 for storing steam water is provided at the side of the heating chamber 20. A steam generator 40 is connected to the water tank 30 through a water supply pipe 33. The steam generating device 40 includes a steam generating heater 42, and generates water by evaporating water supplied from the water tank 30. A pump 35 is provided in the middle of the path of the water supply pipe 33.

  The steam generator 40 is connected to the circulation path 60 by a steam supply pipe 63, and a steam supply port 62 at the end face of the steam supply pipe 63 opens into the circulation path 60. The circulation path 60 is provided along the outer wall of the heating chamber 20, and connects the intake port 25 provided on the back wall 20 b (see FIG. 4) of the heating chamber 20 and the steam heating chamber 50 provided above the heating chamber 20. . A blower fan 28 made of a sirocco fan is provided in the circulation path 60, and the steam supply pipe 63 is connected between the intake port 25 and the blower fan 28.

  The steam heating chamber 50 includes a dish-shaped case 51 and a steam heater 52 that are open at the bottom. The dish-shaped case 51 is disposed substantially at the center on the ceiling side of the heating chamber 20, and the lower surface of the dish-shaped case 51 is covered with a metal ceiling panel 54 that forms the ceiling wall 20 f (see FIG. 4) of the heating chamber 20. A steam heater 52 is disposed in a space surrounded by the dish-shaped case 51 and the ceiling panel 54. The ceiling panel 54 is formed with a plurality of blow holes 55. As a result, the circulation path 60 communicates the intake port 25 and the jet port 55 via the steam heating chamber 50.

  Steam supply passages 23 extending toward the left and right sides are connected to both side surfaces of the steam heating chamber 50, respectively. The steam supply passage 23 extends downward along both side walls 20c and 20d (see FIG. 4) of the heating chamber 20, and is connected to a side steam outlet 22 provided at a lower portion of the both side walls 20c and 20d of the heating chamber 20. It is connected.

  In addition, the heating cooker 1 is provided with a control device 80 and a high frequency generator 79. The control device 80 controls the operation of each part of the heating cooker 1. The high frequency generator 79 is incorporated below the bottom surface of the heating chamber 20 and supplies high frequency into the heating chamber 20 via an antenna (not shown).

  In addition, in FIG. 3, the state which looked at the heating chamber 20 from the side surface, and the state which looked at from the front are described overlappingly. That is, the air inlet 25 is provided in the back wall 20 b (see FIG. 4) of the heating chamber 20, and the circulation path 60 is disposed behind the heating chamber 20. Further, the side surface steam outlet 22 is provided on both side walls 20c and 20d (see FIG. 4) of the heating chamber 20, and the steam supply passage 23 is provided along both side walls 20c and 20d of the heating chamber 20.

  FIG. 4 is a front view showing a state where the door 12 of the heating cooker 1 is opened. A tray support 77 is projected on the side walls 20c and 20d of the heating chamber 20, and a stainless steel tray 21 is installed on the tray support 77 when cooking. On the tray 21, a rack 76 made of stainless steel wire for placing the article to be heated H is installed.

  The air inlet 25 provided in the back wall 20b of the heating chamber 20 is composed of a large number of small holes. Thereby, leakage of the high frequency supplied into the heating chamber 20 from the high frequency generator 79 is prevented. Further, an exhaust port 78 is provided in the lower portion of the back wall 20b of the heating chamber 20, and excess steam supplied into the heating chamber 20 is exhausted from the exhaust port 78.

  FIG. 5 shows a detailed view of part A of FIG. Drain ports 25 a to 25 d having substantially the same diameter as the intake port 25 are provided on the back wall 20 b of the heating chamber 20. Thereby, the leakage of the high frequency from the drain ports 25a-25d can be prevented. The drain ports 25 a to 25 d are connected to the lower side of the intake port 25 and are formed near the lower end surface of the circulation path 60. Thereby, the inlet 25 can be formed to the vicinity of the lower end of the circulation path 60, and pressure loss can be reduced. Further, the intake port 25 and the exhaust ports 25a to 25d can be easily formed simultaneously by punching or the like.

  A drainage member 70 is attached to the back wall 20b of the heating chamber 20 with screws 71 so as to block each part of the drainage ports 25a to 25d. The drainage member 70 is made of a hydrophilic insulator such as glass or resin, and has a guide surface 70a on its upper surface. The guide surface 70a is formed in a mountain shape extending in two directions so that the side away from the drain ports 25a to 25d along the back wall 20b is lowered. Accordingly, the drainage member 70 is disposed in contact with the back wall 20b so that the guide surface 70a is inclined with respect to the horizontal, and the guide surface 70a and the drainage ports 25a to 25d intersect.

  Further, as shown in FIG. 4 described above, the tray support portion 77 is provided so that the tray 21 is disposed at a position where the tray 21 contacts the drainage member 70 when cooking. Thereby, a gap of a predetermined interval is formed between the tray 21 and the back wall 20b.

  FIG. 6 shows a cross-sectional view taken along the line BB of FIG. The blower fan 28 disposed in the circulation path 60 has an impeller 28b connected to a motor 28a. In the circulation path 60, a shielding plate 29a having an opening 29b is provided between the impeller 28b and the back wall 20b. A hole 29 c is formed at the lower end of the shielding plate 29.

  A housing 29 of the blower fan 28 is formed by the lower end surface 29d and the back surface 29e of the circulation path 60 and the shielding plate 29a. Thereby, the housing 29 can be formed easily. The blower fan 28 takes in air through the air inlet 25 and the opening 29b and exhausts it to the circulation path 60 provided above. Further, the steam supply pipe 63 (see FIG. 3) is connected to a path between the opening 29b on the suction side of the blower fan 28 and the intake port 25.

  In the cooking device 1 configured as described above, a cooking sequence starts when a menu is selected by operating the operation panel 11 and a start key (not shown) is pressed. The control device 80 starts the operation of the pump 35, and water is supplied from the water tank 30 into the steam generator 40 via the water supply pipe 33. When the water level in the steam generator 40 reaches a predetermined water level, the pump 35 is stopped and water supply is stopped.

  Next, the steam generating heater 42 is energized, and the water accumulated in the steam generating apparatus 40 is heated by the steam generating heater 42. When water in the steam generator 40 boils, saturated steam is generated. The blower fan 28 and the steam heater 52 are driven at the same time as the energization of the steam generating heater 42 or when the temperature of the water in the steam generating apparatus 40 reaches a predetermined temperature.

  The blower fan 28 sucks the gas containing the steam in the heating chamber 20 from the intake port 25 and sucks the saturated steam generated in the steam generation device 40 from the steam supply port 62. Thereby, the gas containing steam is supplied to the circulation path 60. Steam sent from the air inlet 25 of the heating chamber 20 and the steam generator 40 by the blower fan 28 flows into the steam heating chamber 50 via the circulation path 60.

  The steam that has flowed into the steam heating chamber 50 is heated by the steam heater 52 and becomes superheated steam at 100 ° C. or higher. Usually, superheated steam whose temperature is increased from 150 ° C. to 300 ° C. is used. The superheated steam is jetted downward from the plurality of jet holes 55 provided in the ceiling panel 54 in the heating chamber 20. Thereby, superheated steam is supplied toward the object to be heated H arranged in the heating chamber 20.

  A part of the superheated steam is ejected from the side surface steam outlets 22 on both side walls 20c and 20d of the heating chamber 20 through the steam supply passages 23 provided on the left and right sides of the steam heating chamber 50. The superheated steam ejected from the left and right side surfaces of the heating chamber 20 collides with the tray 21 and then is supplied while rising so as to wrap the heated object H from below the heated object H. As a result, downward convection occurs in the heating chamber 20 above the article to be heated H, and upward convection occurs below the article to be heated H.

  Thus, by forming the convection of the superheated steam in the heating chamber 20, the temperature in the heating chamber 20 and the distribution of the superheated steam are maintained uniformly. In addition, superheated steam from the steam heating chamber 50 is ejected from the gas outlet 55 and the side surface steam outlet 22, and the heated steam positively collides with the heated object H placed on the rack 76. By actively colliding superheated steam, the condensation effect can be enhanced and the heated object H can be efficiently heated.

  Further, the superheated steam convection in the heating chamber 20 is sucked into the intake port 25, passes through the circulation path 60 and the steam heating chamber 50, and returns to the heating chamber 20 to circulate again. By repeating this circulation, the saturated steam from the steam generator 40 is repeatedly heated, and even at the start of operation, superheated steam at a required temperature can be obtained quickly.

  When cooking is finished, a control completion message is displayed on the operation panel 11 by the control device 80 and notified by a buzzer (not shown) provided on the operation panel 11. When a user who knows the end of cooking by these messages or buzzer opens the door 12, the control device 80 detects that the door 12 has been opened by a sensor (not shown).

  When opening of the door 12 is detected, a damper (not shown) provided in the circulation path 60 is opened, and the circulation path 60 communicates with an exhaust duct (not shown) communicating with the external space of the heating cooker 1. Thereby, the steam in the heating chamber 20 flowing into the circulation path 60 from the air inlet 25 by the blower fan 28 is discharged to the external space of the heating cooker 1 through the exhaust duct. Even if the user opens the door 12 during cooking, the damper operates in the same manner as described above. Therefore, the user can safely take out the object to be heated H from the heating chamber 20 without being exposed to steam.

  In addition, the heating of the steam by the steam temperature raising device 50 can be suppressed, and saturated steam of 100 ° C. or less can be supplied into the heating chamber 20 to perform cooking such as steamed dishes. Further, the supply of steam may be stopped by the user's selection of the cooking menu, and the high frequency generator 79 may be driven. Thereby, a high frequency is supplied into the heating chamber 20 through the exhaust port 78 in the heating chamber 20, and the object H to be heated can be cooked by high frequency heating.

  The wall surfaces of the housing 29 and the circulation path 60 are kept at a low temperature because they face the outside air. For this reason, when superheated steam or saturated steam flows into the circulation path 60 through the intake port 25, contact with the wall surface of the circulation path 60 causes condensation. As shown in FIG. 6 described above, since the hole 29c is provided at the lower end of the shielding plate 29a forming the housing 29, the condensed water generated in the housing 29 flows out from the hole 29c.

  Moreover, since the ventilation fan 28 consists of a sirocco fan, it exhausts in the circumferential direction. For this reason, the dew condensation water which generate | occur | produces in the housing 29 is extruded ahead of the shielding board 29a through the hole 29c, as shown by the arrow C. And it is guide | induced to the direction of the back wall 20b of the heating chamber 20 with the dew condensation water which generate | occur | produces ahead of the shielding board 29a.

  The condensed water W reaching the back wall 20b of the heating chamber 20 travels along the guide surface 70a of the drainage member 70 through the exhaust ports 25a to 25d (see FIG. 5) formed in the vicinity of the lower end surface of the circulation path 60. Thereby, the dew condensation water W is drained into the heating chamber 20. Further, since the guide surface 70a is inclined with respect to the horizontal, the dew condensation water W flows down the heating chamber 20 along the guide surface 70a due to gravity, and therefore the dew condensation water W continues from the drain ports 25a to 25d. Drained. In addition, when the lower end surface of the circulation path 60 is provided below and away from the intake port 25, the drain ports 25 a to 25 d may be provided below and away from the intake port 25.

  According to the present embodiment, the drainage ports 25a to 25d are provided in the vicinity of the lower end of the circulation path 60 of the back wall 20b of the heating chamber 20 where the intake port 25 is formed so that the guide surface 70a and the drainage ports 25a to 25d intersect. Since the drainage member 70 is disposed in contact with the back wall 20b, the dew condensation water W on the lower end surface of the circulation path 60 is easily drained into the heating chamber 20 through the drainage member 70. For this reason, the dew condensation water W is not stored in the circulation path 60, and a water droplet does not pour down into the to-be-heated material H from the jet nozzle 55. Accordingly, it is possible to prevent the finish of cooking from being lowered.

  Further, since the guide surface 70a is inclined with respect to the horizontal, the condensed water W on the guide surface 70a flows down in the heating chamber 20 due to gravity. For this reason, the dew condensation water W is easily drained continuously from the drain ports 25a to 25d through the guide surface 70a.

  Further, since the steam generator 40 is connected between the blower fan 28 and the intake port 25 of the circulation path 60, the steam is easily sucked into the circulation path 60 from the steam generator 40. Therefore, pressure loss can be reduced and air blowing efficiency can be improved. At this time, since the distance between the air inlet 25 and the blower fan 28 is increased, the steam is easily cooled. For this reason, although the dew condensation water W becomes easy to be produced | generated by the path | route between the air inlet 25 and the ventilation fan 28, it can drain easily by the drainage member 70. FIG.

  Further, since the drainage member 70 is made of a hydrophilic material, the surface of the guide surface 70a is wetted so that the dew condensation water W can be drained reliably. In addition, the guide surface 70a should just have hydrophilic property. For this reason, the drainage member 70 may be formed of a non-hydrophilic material, and the surface of the guide surface 70a may be coated with glass, resin, or the like.

  Further, when the lower end surface of the circulation path 60 is inclined so that the heating chamber 20 side is lowered, the condensed water W can be guided to the intake port 25 side, so that the condensed water W can be drained more reliably.

  The guide surface 70a is inclined so that the side away from the exhaust ports 25a-25d along the back wall 25b is lowered, and is formed in a mountain shape extending in two directions from the exhaust ports 25a-25d, and guides the condensed water W in two directions. . For this reason, even if one of the guide surfaces 70 a is blocked by the heated object H or the like, the dew condensation water W can be reliably guided into the heating chamber 20.

  Further, in order to prevent high-frequency leakage by the high-frequency generator 79, the drain ports 25a to 25d are formed with a small diameter. For this reason, the dew condensation water can be easily drained by the drainage member 70 from the drain ports 25a to 25d where the water does not easily flow out due to the surface tension. Furthermore, since the drainage member 70 is made of an insulator and the tray 21 is disposed at a position where it abuts the drainage member 70 during cooking, the back wall of the heating chamber 20 can be used even when high-frequency cooking is performed with the tray 21 placed. The discharge between 20b and the tray 21 can be easily prevented.

  Next, FIG. 7 is side surface sectional drawing which shows the heating chamber rear part of the heating cooker of 2nd Embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, a drainage member 72 is provided instead of the drainage member 70 of the first embodiment. Other parts are the same as those of the first embodiment.

  The drainage member 72 is made of a hydrophilic insulator such as glass or resin, and has a guide surface 72a that is inclined with respect to the horizontal so that the side away from the back wall 20b is lowered. A drainage member 72 is disposed in the heating chamber 20 in contact with the back wall 20b so that the guide surface 72a and the intake ports 25b and 25f (see FIG. 5) intersect. The drainage member 72 may be formed of a non-hydrophilic material, and the guide surface 72a may be coated with a hydrophilic material.

  According to the present embodiment, the dew condensation water W generated in the circulation path 60 is drained into the heating chamber 20 through the drainage ports 25b and 25f along the guide surface 72a of the drainage member 72 as in the first embodiment. Therefore, the same effect as the first embodiment can be obtained. Moreover, you may incline so that the side away from the back wall 20b may fall the guide surface 70a of the drainage member 70 of the heating cooker 1 of 1st Embodiment.

  In the first and second embodiments, the intake port 25 and the drain ports 25a to 25d are provided on the back wall 20b of the heating chamber 20, but may be provided on the side walls 20c and 20d. That is, the same effect can be obtained in the heating cooker 1 in which the air inlet 25 and the water outlets 25a to 25d are formed on the peripheral wall excluding the bottom wall 20e and the ceiling wall 20f. Further, the peripheral wall of the heating chamber 20 may be a flat surface or a curved surface.

  Further, the blower fan 28 may be another centrifugal fan such as a turbo fan. Further, the blower fan 28 may be an axial flow fan or a cross flow fan other than the centrifugal fan. At this time, the condensed water W is not pushed forward by the wind from the blower fan 28, but the lower end surface of the circulation path 60 may be inclined so that the heating chamber 20 side is lowered. Thereby, the dew condensation water W collected on the lower end surface of the circulation path 60 can be drained by contacting the guide surfaces 70a and 72a of the drainage members 70 and 72. Moreover, if the guide surfaces 70a and 72a are formed so as to enter the inside of the drain ports 25a to 25d, it is possible to easily discharge the condensed water W from the drain ports 25a to 25d.

  INDUSTRIAL APPLICATION This invention can be utilized for the heating cooker which cooks to-be-heated material using steam.

The perspective view which shows the heating cooker of 1st Embodiment of this invention. The perspective view which shows the state which opened the door of the heating cooker of 1st Embodiment of this invention. The schematic block diagram of the heating cooker of 1st Embodiment of this invention. The front view which shows the state which opened the door of the heating cooker of 1st Embodiment of this invention. Part A detail view of FIG. BB sectional view of FIG. Side surface sectional drawing which shows the back of the heating chamber of the heating cooker of 2nd Embodiment of this invention Side sectional view showing the back of the heating chamber of a conventional cooking device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating cooker 20 Heating chamber 22 Side surface steam blower outlet 23 Steam supply passage 25 Intake port 25a-25d Drainage port 28 Blower fan 29 Housing 29a Shielding plate 29c Hole 40 Steam generating device 42 Steam generating heater 50 Steam heating chamber 55 Fumarole DESCRIPTION OF SYMBOLS 60 Circulation path 62 Steam supply port 63 Steam supply pipe 70, 72 Drainage member 70a, 72a Guide surface 79 High frequency generator 80 Control apparatus

Claims (11)

  A heating chamber in which an object to be heated is installed; a fumarole that ejects steam into the heating chamber; an intake port that opens in a peripheral wall of the heating chamber; a circulation path that communicates the fumarole and the intake port; and the circulation A blower fan disposed in the road and sucking air from the air inlet and blowing air from the air outlet; and a steam generator for supplying steam to the circulation path, and the object to be heated by the steam discharged from the air outlet In the heating cooker for cooking, a drain opening that opens in the peripheral wall and is provided in the vicinity of the lower end of the circulation path, and a guide surface that intersects the drain outlet, is disposed in the heating chamber in contact with the peripheral wall. A cooking device characterized in that a drainage member is provided.   The cooking device according to claim 1, wherein the guide surface is inclined with respect to the horizontal.   The cooking device according to claim 1 or 2, wherein the steam generator is connected between the blower fan and the intake port of the circulation path.   The heating according to any one of claims 1 to 3, wherein the intake port includes a plurality of small holes, and the drain port having substantially the same diameter as the intake port is connected to the intake port. Cooking device.   5. The guide surface according to claim 1, wherein the guide surface is inclined so that a side away from the drain port along the peripheral wall is lowered, and is formed in a mountain shape extending in two directions from the drain port. The cooking device described.   The cooking device according to any one of claims 1 to 5, wherein the guide surface is inclined so that a side away from the peripheral wall is lowered.   The cooking device according to any one of claims 1 to 6, wherein a lower end surface of the circulation path is inclined so that the heating chamber side is lowered.   The blower fan comprises a centrifugal fan having a rotation axis perpendicular to the peripheral wall, and a housing for guiding the exhaust of the centrifugal fan upward is formed in the circulation path, and the housing has a hole at a lower end on the peripheral wall side. A heating cooker according to any one of claims 1 to 7, wherein a portion is provided.   The cooking device according to claim 8, wherein a lower end surface of the housing is a lower end surface of the circulation path.   The cooking device according to any one of claims 1 to 9, further comprising a high frequency generator for supplying a high frequency to the heating chamber.   The cooking device according to claim 10, wherein the drainage member is made of an insulator, and further includes a tray placed at a position where the object to be heated is placed and abuts on the drainage member during cooking.

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