JP2008057933A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooker capable of reducing watering from a steam exhaust tube. <P>SOLUTION: The cooker 1 cooking using steam comprises the steam exhaust tube 32 discharging steam in a heating chamber 20 holding a heated object W, and an extended member 61 of U-shaped cross section disposed extending in the flow direction of steam inside the steam exhaust tube 32. Water forming a water film formed in the steam exhaust tube 32 by dew condensation flows down along the extended member 61 to quickly burst the water film. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device that cooks an object to be heated with steam.

  A conventional cooking device is disclosed in Patent Document 1. This cooking device includes a steam generator for generating steam and a steam temperature increasing device for heating the steam. The steam generated by the steam generator is further heated by the steam heating device, and superheated steam is supplied into the heating chamber. Thereby, the to-be-heated material arranged in the heating chamber is cooked.

  A steam exhaust pipe is connected to the rear surface of the heating chamber, and excess steam is exhausted to the outside through a steam exhaust pipe extending vertically. Thereby, the pressure rise in a heating chamber is suppressed and the danger by becoming high pressure in a heating chamber is avoided.

JP-A-2005-241188

  However, according to the conventional cooking device, the steam exhaust pipe is arranged outside the heating chamber, so that the steam flowing through the inside is cooled and condensed. For this reason, the condensed water droplets may form a water film in the steam exhaust pipe due to surface tension. When this water film expands and bursts with the steam flowing through the steam exhaust pipe, there is a problem that water scatters and wets the surroundings of the heating cooker.

  An object of this invention is to provide the heating cooker which can reduce the water sprinkling from a steam exhaust pipe.

  In order to achieve the above object, the present invention provides a cooking device that performs cooking using steam, a steam exhaust pipe that discharges steam from a heating chamber that accommodates an object to be heated, and steam inside the steam exhaust pipe. And an extending member that extends in the distribution direction.

  According to this configuration, the object to be heated is cooked by supplying saturated steam or superheated steam into the heating chamber. Excess steam supplied to the heating chamber is exhausted to the outside through the steam exhaust pipe, and the pressure rise in the heating chamber is suppressed. When water droplets due to condensation of steam flowing through the steam exhaust pipe form a water film in the steam exhaust pipe due to surface tension, the water forming the water film flows down the extending member and the water film is immediately ruptured.

  Moreover, the present invention is characterized in that, in the cooking device configured as described above, the extending member extends to the vicinity of the end of the steam exhaust pipe.

  According to the present invention, in the cooking device configured as described above, the surface of the extending member has hydrophilicity. According to this configuration, the extending member may be formed of a hydrophilic material, or the surface may be coated with a hydrophilic material.

  Moreover, the present invention is characterized in that, in the cooking device configured as described above, the extending member has parallel first and second opposing surfaces facing each other. According to this structure, the water which forms the dew condensation and water film which are formed in the steam exhaust pipe flows down between the first and second opposing surfaces by a capillary phenomenon.

  Moreover, the present invention is characterized in that, in the cooking device configured as described above, a cross-sectional shape of the extending member is U-shaped or H-shaped.

  Moreover, the present invention is characterized in that, in the cooking device configured as described above, the extending member is twisted about the direction of steam flow.

  Moreover, the present invention is characterized in that, in the cooking device having the above-described configuration, the extending member is detachable from the steam exhaust pipe.

  According to the present invention, in the cooking device configured as described above, the extending member is provided with a locking member that is locked to the steam exhaust pipe on a terminal side of the steam exhaust pipe. According to this configuration, the extending member is held by locking the locking member to the steam exhaust pipe.

  Moreover, the present invention is characterized in that, in the cooking device configured as described above, the locking member is formed in a shape that allows a finger to be hung. According to this configuration, the extending member is attached to and detached from the steam exhaust pipe by placing a finger on the locking member.

  According to the present invention, in the cooking device configured as described above, the extending member is made of a flexible member. According to this configuration, the extending member is deformed and installed in a flexible steam exhaust pipe such as a rubber hose. Further, the extending member is elastically deformed and held by a frictional force with the inner wall of the steam exhaust pipe.

  According to the present invention, since the extending member extending in the steam circulation direction is provided inside the steam exhaust pipe, the condensation of the steam circulating in the steam exhaust pipe can be easily returned to the heating chamber. Thereby, the water film in the steam exhaust pipe due to surface tension can be reduced. Even if water droplets due to condensation form a water film in the steam exhaust pipe due to surface tension, the water forming the water film flows down the extending member and the water film immediately bursts. For this reason, the water film is ruptured before it is expanded by the steam flowing through the steam exhaust pipe. Accordingly, water spray from the steam exhaust pipe can be reduced.

  According to the present invention, since the extending member extends to the vicinity of the steam exhaust pipe, rupture due to the expansion of the water film formed near the end of the steam exhaust pipe is reduced. Accordingly, water spray from the steam exhaust pipe can be further reduced.

  According to the present invention, since the surface of the extending member has hydrophilicity, the water forming the water film easily flows down through the extending member. Accordingly, water spray from the steam exhaust pipe can be further reduced.

  Further, according to the present invention, since the extending member has parallel first and second opposing surfaces facing each other, water that forms condensation or water film travels between the first and second opposing surfaces by capillary action. Flow down. Accordingly, water spray from the steam exhaust pipe can be further reduced.

  Also, according to the present invention, since the cross-sectional shape of the extending member is U-shaped or H-shaped, the extending member having the first and second opposing surfaces can be easily realized.

  Further, according to the present invention, since the extending member is twisted with the steam flow direction as an axis, the condensation contacting the surface of the extending member is divided even if it is about to spread due to surface tension. Therefore, the generation of a water film can be reduced.

  Further, according to the present invention, since the extending member is detachable from the steam exhaust pipe, the extending member can be removed and cleaned.

  Further, according to the present invention, since the extending member is provided on the terminal end side of the steam exhaust pipe so as to be locked to the steam exhaust pipe, the detachable extending member can be easily held on the steam exhaust pipe. it can.

  Further, according to the present invention, since the locking member is formed in a shape that can be hooked with fingers, the extending member can be easily attached and detached.

  According to the present invention, since the extending member is made of a flexible member, it can be easily installed in a steam exhaust pipe made of, for example, a rubber hose.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a front view and a side view showing a heating cooker according to an embodiment. The heating cooker 1 cooks an object to be heated with a heating medium made of superheated steam. The heating cooker 1 includes a rectangular parallelepiped cabinet 10. A door 11 is provided in front of the cabinet 10.

  The door 11 is pivotally supported in a vertical plane with the lower end as a center, and a handle 12 for opening and closing the door 11 is provided at the upper part. A central portion 11C of the door 11 is provided with a transmission portion 11a (see FIG. 3) in which heat-resistant glass is fitted to visually recognize the inside. A left side portion 11L and a right side portion 11R provided with metal decorative plates on the surface are symmetrically arranged on the left and right sides of the central portion 11C. An operation panel 13 is provided on the right side 11 </ b> R of the door 11.

  FIG. 3 shows a front view of the heating cooker 1 with the door 11 opened. The door 11 is rotated when the handle 12 is gripped and pulled forward, and the posture of the door 11 can be changed by 90 ° from a vertical closed state to a horizontal open state. When the door 11 is opened, the front of the cabinet 10 is exposed.

  A heating chamber 20 is provided at a location corresponding to the central portion 11 </ b> C of the door 11. A water tank chamber 70 is provided at a location corresponding to the left side portion 11L of the door 11, and a water tank 71 for storing water for generating steam is stored therein. No opening is provided at a location corresponding to the right side portion 11R of the door 11, but a control board (not shown) is disposed inside.

  The heating chamber 20 is formed in a substantially rectangular parallelepiped, and the entire front side facing the door 11 is an opening 20d for taking in and out the article to be heated F (see FIG. 5). The opening 20d is opened and closed by the rotation of the door 11. The wall surface of the heating chamber 20 is formed of a stainless steel plate, and the outer peripheral surface of the heating chamber 20 is provided with a heat insulation measure.

  FIG. 4 is a front view showing details in the heating chamber 20. On the side wall of the heating chamber 20, a plurality of tray support portions 20 b and 20 c are provided at different heights. The upper tray support part 20 b is provided below the vapor reflecting part 68. A stainless steel tray 21 is locked to one or both of the tray supports 20b and 20c. A stainless steel wire rack 22 on which the object to be heated F is placed is placed on the tray 21.

  When cooking with superheated steam, the tray 21 is installed in the upper tray support portion 20b. Thereby, superheated steam can be guide | induced to the lower surface of the to-be-heated object F (refer FIG. 5) by reflection of the vapor | steam reflection part 68 so that it may mention later. The tray 21 may be installed on the upper and lower tray support portions 20b and 20c. Thereby, many to-be-heated materials F can be cooked at once. At this time, the tray 21 arranged in the tray support portion 20b is formed to have air permeability, and superheated steam is supplied to the lower tray 21.

  The back wall on the back side of the heating chamber 20 is provided with an intake port 28 at a substantially central portion in the left-right direction, and an exhaust port 32a is provided at the lower left portion. The vapor reflecting portion 68 is recessed on both side walls of the heating chamber 20 and has a curved surface. Superheated steam jetted laterally from a jet cover 61 (described later) toward the vapor reflecting portion 68 is reflected by the vapor reflecting portion 68 and guided below the object to be heated F (see FIG. 5). .

  An ejection cover 61 made of a stainless steel plate that ejects superheated steam is attached to the top surface of the heating chamber 20. The ejection cover 61 is formed with a plurality of air outlets 65, 66, and 67 (see FIGS. 5 and 10). An illumination device 69 that illuminates the inside of the heating chamber 20 is provided on the front side of the right side portion of the ejection cover 61.

  FIG. 5 shows a schematic structure of the inside of the heating cooker 1. In the figure, the heating chamber 20 is viewed from the side. As shown in FIG. 3 described above, the water tank 71 is disposed on the left side of the heating chamber 20 and communicates with the tank water level detection container 91 via the joint portion 58. Thereby, the water tank 71 is detachable with respect to the cabinet 10 (refer FIG. 2).

  The tank water level detection container 91 is provided with a water level sensor 56. The water level sensor 56 has a plurality of electrodes, and detects the water level by conduction between the electrodes. In this embodiment, the water level is detected in three stages by the GND electrode and the three detection electrodes. When the water level of the water tank 71 falls below a predetermined water level as detected by the water level sensor 56, a notification is given to encourage water supply.

  In the tank water level detection container 91, a water supply path 55 extends to the bottom and is immersed. The water supply passage 55 is provided with a water supply pump 57 in the middle of the route, and is connected to the steam generator 50. The steam generator 50 has a cylindrical pot 51 whose axial direction is vertical, and a water supply port 55 a on an end surface of the water supply channel 55 faces the pot 51 and opens. Water is supplied from the water tank 71 to the pot 51 by driving the water supply pump 57.

  The pot 51 is formed into a bottomed cylindrical shape made of a metal such as stainless steel, a synthetic resin, a ceramic, or a combination of these different materials, and has heat resistance. A steam generating heater 52 composed of a sheathed heater is immersed in the pot 51. The steam generating heater 52 is formed in a cylindrical shape by turning spirally. The water in the pot 51 is heated by energization of the steam generating heater 52, and steam is generated.

  In the pot 51, a cylindrical isolation wall 51a extending from the ceiling to the inside of the steam generating heater 52 is disposed. Thus, a water level detection chamber 51b isolated from the steam generating heater 52 by the isolation wall 51a is formed in the pot 51. The isolation wall 51a is formed to have a gap with respect to the bottom surface of the pot 51, and the inside and outside of the water level detection chamber 51b communicate with each other and are maintained at the same water level.

  Moreover, the open end of the water supply channel 55 (see FIG. 5) opens to the upper part of the water level detection chamber 51b and discharges water. This water cools the water in the water level detection chamber 51b and suppresses the water temperature in the water level detection chamber 51b from rising above the water temperature outside the water level detection chamber 51b. Therefore, boiling is unlikely to occur in the water level detection chamber 51b.

  A pot water level detector 81 that detects the water level in the pot 51 is provided in the water level detection chamber 51b. The pot water level detection unit 81 has a plurality of electrodes depending from the ceiling portion 83. The water level in the pot 51 is detected by conduction between the electrodes.

  A steam supply duct 34 connected to a circulation duct 35 described later is led out on the upper surface of the pot 51. An overflow pipe 98 connected to the tank water level detection container 91 is provided at the upper part of the peripheral surface of the pot 51. Thereby, the overflow water in the water supply channel 55 is guided to the water tank 71. The overflow level of the overflow pipe 98 is set higher than the normal water level in the pot 51 and lower than the steam supply duct 34.

  The bottom of the pot 51 is formed in a funnel shape, and a drain pipe 53 is led out from the lower end. A drain valve 54 is provided in the middle of the drain pipe 53. The drain pipe 53 has a gradient of a predetermined angle toward the water tank 71. Thereby, the drain valve 54 can be opened to drain the water in the pot 51 into the water tank 71, and the water tank 71 can be removed and discarded.

  A circulation duct 35 is provided on the outer wall of the heating chamber 20 from the back to the top. The circulation duct 35 opens an intake port 28 formed in the back wall of the heating chamber 20 and is connected to a steam temperature raising device 40 disposed above the heating chamber 20. The lower surface of the steam temperature raising device 40 is covered with the ejection cover 61, and the upper surface is covered with the upper cover 47.

  A blower fan 26 comprising a centrifugal fan is installed in the circulation duct 35, and the steam supply duct 34 is connected to the upstream side of the blower fan 26. The steam generated by the steam generator 50 by driving the blower fan 26 flows into the circulation duct 35 through the steam supply duct 34. Further, the steam in the heating chamber 20 is sucked from the intake port 28 and is circulated through the circulation duct 35 by being ejected from the jet ports 65, 66 (see FIG. 10) and 67 of the jet cover 61.

  In general, the gas in the heating chamber 20 is air, but when steam cooking is started, the air is replaced with steam. In the following description, it is assumed that the gas in the heating chamber 20 is replaced with steam.

  A steam exhaust pipe 33 that branches via an electric damper 48 is provided at the upper part of the circulation duct 35. The steam exhaust pipe 33 has an open end facing the outside, and the steam in the heating chamber 20 is forcibly exhausted by opening the damper 48 and driving the blower fan 26.

  Further, a steam exhaust pipe 32 communicating with the lower part of the heating chamber 20 through an exhaust port 32a is led out. The steam exhaust pipe 32 is formed of a heat-resistant rubber hose, and the end faces the outside and exhausts excess steam in the heating chamber 20. Thereby, the pressure rise in the heating chamber 20 is suppressed, and dangers such as superheated steam being ejected from the high-pressure heating chamber 20 when the door 11 is opened are avoided. In addition, when mounting a magnetron in the heating cooker 1 and cooking by a microwave, outside air is inhaled through the steam exhaust pipe 32.

  FIG. 6 is a perspective view showing details of the steam exhaust pipe 32. An extension member 75 extending in the steam flow direction is provided inside the steam exhaust pipe 32 so as to extend to the vicinity of the end of the steam exhaust pipe 32. The extending member 75 is made of a material having hydrophilicity and flexibility such as heat-resistant resin or rubber. The extending member 75 may be formed of a non-hydrophilic material, and the surface may be coated with hydrophilic glass or resin.

  FIG. 7 shows a cross-sectional view of the steam exhaust pipe 32. The extending member 75 is formed in a U-shaped cross section having opposed first and second opposing surfaces 75b and 75c in parallel. The extending member 75 has protrusions 75 a protruding left and right side by side in the longitudinal direction, and is attachable to and detachable from the steam exhaust pipe 32. For this reason, the extending member 75 can be pulled out of the steam exhaust pipe 32 and cleaned.

  It is more desirable to provide a locking member that is locked to the steam exhaust pipe 32 on the end side of the steam exhaust pipe 32 of the extending member 75. Accordingly, the detachable extending member 75 can be easily held by locking the locking member to the steam exhaust pipe 32. Moreover, you may form a locking member in the shape where a finger can be hung. Thereby, the extending member 75 can be attached or detached easily.

  Since the extending member 75 has flexibility, the extending member 75 is elastically deformed and can be easily disposed in the steam exhaust pipe 32 made of a rubber hose. Further, the extending member 75 inserted into the steam exhaust pipe 32 is elastically deformed by the projecting portion 75a pressing the inner wall of the steam exhaust pipe 32, and is held by a frictional force. Thereby, even if the vapor | steam exhaust pipe 32 is formed with metals, such as stainless steel, and heat resistant hard resin, the extending member 75 can be hold | maintained easily.

  In addition, as shown in FIG. 8, you may form the extending member 75 in the cross-section H type | mold which has the parallel 1st, 2nd opposing surfaces 75b and 75c which oppose.

  In FIG. 5, the steam temperature raising device 40 includes a steam heater 41 including a sheathed heater, and further heats the steam generated by the steam generator 50 to generate superheated steam. Therefore, the steam generator 50 and the steam temperature raising device 40 constitute a heating medium generating unit that generates a heating medium made of superheated steam. The steam temperature raising device 40 is disposed at the center of the ceiling of the heating chamber 20 as viewed in plan. Moreover, the area is narrower than the top surface of the heating chamber 20, and it is formed in a small volume so that high heating efficiency can be obtained.

  FIG. 9 is a block diagram showing a control configuration of the heating cooker 1. The heating cooker 1 includes a control device 80 having a microprocessor and a memory. The control device 80 includes a blower fan 26, a steam heater 41, a damper 48, a steam generation heater 52, a drain valve 54, a water supply pump 57, an operation panel 13, a pot water level detection unit 81, a tank water level detection unit 56, a temperature sensor 82, A humidity sensor 83 is connected. The cooking device 1 is driven by controlling each part according to a predetermined program by the control device 80.

  The operation panel 13 has a display unit (not shown) and displays the control status on the display unit. In addition, an operation command is input through various operation keys arranged on the operation panel 13. The operation panel 13 is also provided with a sound generator (not shown) that emits various sounds. The temperature sensor 82 detects the temperature in the heating chamber 20. The humidity sensor 83 detects the humidity in the heating chamber 20.

  In the heating cooker 1 having the above-described configuration, the door 11 is opened and the water tank 71 is pulled out from the water tank chamber 70, and water is put into the water tank 71. The filled water tank 71 is pushed into the water tank chamber 70 and connected to the tank water level detection container 91 by the joint portion 58. The object to be heated F is placed on the rack 22 and the door 11 is closed. A cooking sequence is started by operating the operation panel 13 to select a menu and pressing a start key (not shown). Thereby, the feed water pump 57 starts operation and water is supplied to the steam generator 50. At this time, the drain valve 54 is closed.

  When the water supply pump 57 is driven, water is supplied into the pot 51 through the water supply passage 55. When the pot 51 reaches the reference water level, the water supply is stopped by detection of the pot water level detection unit 81. At this time, the water level of the water tank 71 is monitored by the tank water level detection unit 56, and a warning is given if the water tank 71 does not have enough water for cooking. When a predetermined amount of water is put into the pot 51, the steam generating heater 52 is energized, and the steam generating heater 52 directly heats the water in the pot 51.

  The blower fan 26 and the steam heater 41 are energized at the same time as the energization of the steam generating heater 52 or at the time when the water in the pot 51 reaches a predetermined temperature. The steam in the heating chamber 20 is sucked into the circulation duct 35 from the intake port 28 by driving the blower fan 26. Further, when the water in the pot 51 boils, saturated steam at 100 ° C. and 1 atm is generated, and the saturated steam flows into the circulation duct 35 through the steam supply duct 34. At this time, the damper 48 is closed. The steam pumped from the blower fan 26 flows through the circulation duct 35 and flows into the steam temperature raising device 40.

  The steam that has flowed into the steam temperature raising device 40 is heated by the steam heater 41 to become superheated steam of 100 ° C. or higher. Usually, superheated steam whose temperature is increased from 150 ° C. to 300 ° C. is used. A part of the superheated steam is ejected from the fusible hole 65 on the lower surface of the fusible cover 61 in the direction directly below (arrow A). Thereby, the upper surface of the to-be-heated material F contacts with superheated steam.

  Further, as shown in the front view of FIG. 10, a part of the superheated steam is ejected from the jet port 66 provided on the side surface of the jet cover 61 in a diagonally downward direction (arrow B). The superheated steam ejected in the direction of arrow B is reflected by the vapor reflecting portion 68 and guided below the object to be heated F. Thereby, the lower surface of the to-be-heated material F contacts with superheated steam.

  When the surface of the object to be heated F is 100 ° C. or less, the superheated steam is condensed on the surface of the object to be heated F. Since this condensation heat is as large as 539 cal / g, a large amount of heat can be given to the heated object F in addition to the convection heat transfer.

  Further, a part of the superheated steam is ejected obliquely downward (arrow C) toward the door 11 from an air outlet 67 formed on the front surface of the ejection cover 61. The steam in the heating chamber 20 is sucked from the intake port 28 by the blower fan 26. Due to this suction force, the air flow of superheated steam blown forward is bent and guided backward. Thereby, a part of superheated steam collides with the front part of the upper surface of the to-be-heated material F, and a part is guide | induced below the to-be-heated material F from the front. As a result, the superheated steam reaches the front portion of the heating chamber 20 to prevent insufficient heating of the front portion of the heated object F, and the heated object F can be cooked uniformly.

  Moreover, since the superheated steam in the heating chamber 20 is sucked from the intake port 28, the high-temperature superheated steam that directly hits the door 11 can be reduced. Therefore, it is not necessary to suppress the heating of the door 11 and use the door 11 having high heat resistance, and the cost increase of the heating cooker 1 can be prevented.

  When the suction force of the blower fan 26 is reduced, the airflow of superheated steam blown forward is bent at the lower part of the heating chamber 20. Thereby, more superheated steam can be guide | induced to the lower surface of the to-be-heated material F. FIG. When the suction force of the blower fan 26 is increased, the airflow of superheated steam blown forward is bent at the upper part of the heating chamber 20. Thereby, more superheated steam can be guide | induced to the upper surface of the to-be-heated material F. FIG.

  When the amount of steam in the heating chamber 20 increases with time, surplus steam is discharged to the outside through the steam exhaust pipe 32. Since the steam exhaust pipe 32 is disposed outside the heating chamber 20, the steam flowing through the inside is cooled and condensed. Condensation flows down the inner wall of the steam exhaust pipe 32 and the extending member 75 and returns to the heating chamber 20.

  Further, the condensed water droplets may form a water film in the steam exhaust pipe 32 due to surface tension. The water that forms the water film flows down along the extending member 75 and thus immediately bursts. For this reason, the water film can be ruptured before being expanded by the steam flowing through the steam exhaust pipe 32. Thereby, the water spray from the steam exhaust pipe 32 by a water film expanding and bursting can be reduced. Since the extending member 75 is provided so as to extend to the vicinity of the end of the steam exhaust pipe 32, the water film near the end of the steam exhaust pipe 32 that is likely to be scattered around can be immediately ruptured.

  The superheated steam ejected from the air outlets 65, 66, 67 gives heat to the article F to be heated, and is then sucked into the circulation duct 35 from the air inlet 28 and flows into the steam temperature raising device 40. Thereby, the steam in the heating chamber 20 is repeatedly circulated for cooking.

  When cooking is completed, the control device 80 displays the end of cooking on the display unit of the operation panel 13 and notifies a signal sound. When the door 11 is opened by the user who is informed of the end of cooking, the damper 48 is opened and the steam in the heating chamber 20 is rapidly exhausted from the steam exhaust pipe 33. Thereby, the user can take out the to-be-heated material F from the inside of the heating chamber 20 safely, without touching high temperature steam.

  According to the present embodiment, since the extending member 75 extending in the steam flow direction is provided inside the steam exhaust pipe 32, dew condensation that occurs in the steam exhaust pipe 32 can be easily returned to the heating chamber 20. Thereby, the water film in the steam exhaust pipe 32 due to surface tension can be reduced.

  Even if water droplets due to condensation in the steam exhaust pipe 32 form a water film in the steam exhaust pipe 32 due to surface tension, the water forming the water film flows down the extending member 75 and bursts. For this reason, the water film is ruptured before being expanded by the steam flowing through the steam exhaust pipe 32. Accordingly, water spray from the steam exhaust pipe 32 can be reduced.

  Further, since the extending member 75 has hydrophilicity, water that forms condensation or a water film easily flows down. For this reason, the water spray from the steam exhaust pipe 32 can be further reduced. Furthermore, since the extending member 75 is formed in a U-shaped cross section or an H-shaped cross section having the first and second opposing surfaces 75b and 75c facing each other, water flows between the first and second opposing surfaces 75b and 75c. Easily flows down by capillary action. For this reason, the water spray from the steam exhaust pipe 32 can be further reduced.

  In addition, it is more desirable to form the extending member 75 so as to be twisted about the steam flow direction. Thereby, even if the dew condensation which contacts the surface of the extending member 75 tries to spread in the horizontal direction due to the surface tension, it is divided. Therefore, the generation of a water film can be further reduced.

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

The front view which shows the heating cooker of embodiment of this invention The side view which shows the heating cooker of embodiment of this invention The front view which shows the state which opened the door of the heating cooker of embodiment of this invention The front view which shows the heating chamber of the heating cooker of embodiment of this invention The figure which shows the internal structure of the heating cooker of embodiment of this invention The perspective view which shows the steam exhaust pipe of the heating cooker of embodiment of this invention The cross-sectional view which shows the steam exhaust pipe of the heating cooker of embodiment of this invention The cross-sectional view which shows the other steam exhaust pipe of the heating cooker of embodiment of this invention The block diagram which shows the structure of the heating cooker of embodiment of this invention. The front view which shows the heating cooker of embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating cooker 11 Door 20 Heating chamber 21 Receptacle 26 Blower fan 28 Inlet 31 Exhaust fan 32, 33 Steam exhaust pipe 34 Steam supply duct 35 Circulation duct 40 Steam temperature rising device 41 Steam heater 47 Outer cover 48 Damper 50 Steam generation Equipment 51 Pot 51b Water level detection chamber 52 Steam generating heater 54 Drain valve 55 Water supply path 55a Water supply port 56 Tank water level detection part 57 Water supply pump 61 Spout cover 65, 66, 67 Fume port 68 Steam reflection part 71 Water tank 75 Extension member 75b 75c First and second opposing surfaces 81 Pot water level detection part 91 Tank water level detection container F Heated object

Claims (10)

  In a heating cooker for cooking using steam, a steam exhaust pipe that discharges steam in a heating chamber that accommodates an object to be heated, and an extending member that extends in the steam flow direction inside the steam exhaust pipe A cooking device characterized by comprising:   The cooking device according to claim 1, wherein the extending member extends to the vicinity of a terminal end of the steam exhaust pipe.   The cooking device according to claim 1 or 2, wherein a surface of the extending member has hydrophilicity.   The cooking device according to any one of claims 1 to 3, wherein the extending member has parallel first and second opposing surfaces facing each other.   The cooking device according to claim 4, wherein a cross-sectional shape of the extending member is U-shaped or H-shaped.   The cooking device according to any one of claims 1 to 5, wherein the extending member is twisted with the steam flow direction as an axis.   The cooking device according to any one of claims 1 to 6, wherein the extending member is detachable from the steam exhaust pipe.   The cooking device according to claim 7, wherein the extension member is provided with a locking member that is locked to the steam exhaust pipe on a terminal side of the steam exhaust pipe.   The cooking device according to claim 8, wherein the locking member is formed in a shape in which a finger can be hung.   The cooking device according to any one of claims 1 to 9, wherein the extending member is made of a flexible member.