JP2009041822A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of easily treating dew condensation water in a heating chamber with a simple constitution and reducing wiping work. <P>SOLUTION: This heating cooker comprises a main body casing 10, a steam generator disposed in the main body casing 10 and generating steam, a heating chamber 20 disposed in the main body casing 10 in a state that the steam from the steam generater is supplied thereto, a door 12 disposed on a front face side of the main body casing 10 for opening and closing an opening portion of the heating chamber 20, a drainage hole 102 formed on a bottom surface in the heating chamber 20, and a drain pipe 110 disposed at a lower side with respect to the heating chamber 20 in the main body casing 10, connected with the drainage hole 102 at its one end, and opened to an outer side at an outlet portion 110a at the other end side. An opening and closing mechanism disposed on the drain pipe 110 is opened and closed according to the opening and closing of the door 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cooking device.

  Conventionally, as a heating cooker, there is one that supplies steam generated by a steam generator to a heating chamber to cook food (see, for example, Japanese Patent Laid-Open No. 2005-55000 (Patent Document 1)). .

In this cooking device, when cooking is performed using steam, condensed water accumulates at the bottom of the heating chamber, and the user must perform a cleaning operation such as wiping the condensed water in the heating chamber each time cooking is performed. There's a problem. In particular, in the cooking using heating steam, the condensed water accumulates as much as about 200 cm ^3, so it is not easy to treat all by wiping.
Japanese Patent Laid-Open No. 2005-55000

  Then, the subject of this invention is providing the heating cooker which can process the condensed water in a heating chamber easily with a simple structure, and can reduce a wiping work.

In order to solve the above problems, the heating cooker of the present invention is:
A body casing;
A steam generator disposed in the main casing and generating steam;
A heating chamber disposed in the main casing and supplied with steam from the steam generator;
A door that is disposed on the front side of the main casing and opens and closes the opening of the heating chamber;
A drain hole provided in the bottom surface of the heating chamber;
Disposed below the heating chamber in the main body casing, one end is connected to the drain hole, and the drainage path provided in the main body casing so that the outlet on the other end side opens to the outside,
An opening and closing mechanism provided in the drainage path;
An opening / closing mechanism control unit for controlling opening / closing of the opening / closing mechanism,
The heating chamber is hermetic and has an oxygen concentration lower than that of the atmosphere when steam is supplied from the steam generator in a state where the opening / closing mechanism is closed by the opening / closing mechanism controller. And

  According to the cooking device having the above-described configuration, for example, when cooking is performed with the door closed, the dew condensation water generated in the heating chamber accumulates on the bottom surface by being closed by an opening / closing mechanism provided in the drainage path. . The condensed water accumulated at the bottom of the heating chamber flows through the drain hole and the drainage path by opening an opening / closing mechanism provided in the drainage path, and then flows outward from the outlet of the drainage path that opens to the outside. Drained. The condensed water drained to the outside is stored in a dew receiving portion or drained to the outside through a drain hose. In this way, steam cooking can be performed while the heating chamber is maintained in a low-oxygen atmosphere, so that the food can be cooked deliciously while suppressing oxidation of the food, and the steam supplied to the heating chamber is condensed and heated. Even if it accumulates on the bottom surface of the chamber, the operation of draining water can be performed at an arbitrary timing, for example, before the end of cooking. Thereby, the user can reduce the wiping work.

  Moreover, in the heating cooker of one Embodiment, the said opening / closing mechanism control part controls opening / closing of the said opening / closing mechanism according to the opening / closing operation | movement of the said door.

  According to the above embodiment, the opening / closing mechanism control unit that controls opening / closing of the opening / closing mechanism according to the opening / closing operation of the door opens and closes the door, opens and closes the opening / closing mechanism, performs drainage treatment, or opens / closes until the door is opened. By closing the mechanism and maintaining a low oxygen state in the heating chamber, the opening and closing mechanism can be reliably opened and closed by opening and closing the door without performing other operations.

Moreover, in the heating cooker of one embodiment,
It also has a drain button,
The opening / closing mechanism control unit controls opening / closing of the opening / closing mechanism in accordance with an operation of the drain button.

  According to the above embodiment, the drainage treatment can be performed according to the user's preference by controlling the opening / closing mechanism to be opened / closed by the opening / closing mechanism controller in accordance with the operation of the drainage button.

  Moreover, in the heating cooker of one Embodiment, the said opening / closing mechanism control part controls opening / closing of the said opening / closing mechanism according to a cooking sequence.

  According to the said embodiment, the waste_water | drain process linked with the cooking sequence can be performed by controlling opening / closing of an opening / closing mechanism by an opening / closing mechanism control part according to a cooking sequence. For example, when cooking using steam is finished, the open / close mechanism control unit opens the open / close mechanism to perform drainage treatment.

  Moreover, in the heating cooker of one embodiment, the opening / closing mechanism is located below the heating chamber on the front surface of the main body casing, with the outlet portion of the drainage path opened and the door closed. When the rear side of the door and at least a part of the front surface of the main casing are in contact with each other, the outlet portion of the drainage path is closed by the rear surface of the door, while the door is opened and closed by the rear surface of the door. This is a mechanism for opening the outlet portion of the drainage path.

  According to the above embodiment, on the lower side of the heating chamber on the front surface of the main body casing, the outlet portion of the drainage path is closed by the rear surface of the door by closing the door, while being closed by the rear surface of the door by opening the door. Since the outlet portion of the drainage path that has been opened is opened, the drainage path can be reliably closed during cooking, and the condensed water accumulated at the bottom of the heating chamber can be reliably drained after cooking.

  Moreover, in the cooking device of one Embodiment, the said opening-and-closing mechanism control part opens and closes the said valve according to opening and closing of the said door.

  According to the above embodiment, the valve disposed in the drainage path is closed by closing the door, while the valve disposed in the drainage path is opened by opening the door. By closing and opening the door after cooking, the condensed water accumulated at the bottom of the heating chamber can be surely drained.

  Moreover, in the heating cooker of one embodiment, the opening / closing mechanism control unit transmits the door opening / closing operation to the valve driving unit using a link mechanism interlocked with the opening / closing of the door. Open and close.

  According to the above-described embodiment, a simple structure is achieved by using the link mechanism that is linked to the opening and closing of the door, and the opening and closing mechanism control unit transmits the door opening and closing operation to the valve driving unit to open and close the valve. The passage in the drainage path can be opened and closed according to the opening and closing of the door.

  As is clear from the above, according to the heating cooker of the present invention, it is possible to realize a heating cooker that can easily treat the condensed water in the heating chamber with a simple configuration and can reduce the wiping work.

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

  FIG. 1 is an external perspective view of a heating cooker according to an embodiment of the present invention. As shown in FIG. 1, the heating cooker 1 is provided with an operation panel 11 on the upper part of the front surface of a rectangular parallelepiped main body casing 10, and on the lower side of the operation panel 11 on the front surface of the main body casing 10, a side on the lower end side. A door 12 that rotates around the center of the door 12 is provided. A handle 13 is provided at the top of the door 12, and a heat-resistant glass window 14 is fitted into the door 12.

  FIG. 2 is an external perspective view of the heating cooker 1 with the door 12 opened. As shown in FIG. 2, a rectangular parallelepiped heating chamber 20 is provided in the main body casing 10. The heating chamber 20 has an opening 20a on the front side facing the door 12, and the side surface, bottom surface and top surface of the heating chamber 20 are formed of stainless steel plates. 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 placed around the heating chamber 20 and inside the door 12 to insulate the inside of the heating chamber 20 from the outside. Further, a stainless steel receiving tray 21 is installed on the bottom surface of the heating chamber 20, and a stainless steel wire rack 24 (see FIG. 3) for placing an object to be heated is installed on the receiving tray 21. .

  FIG. 3 is a schematic configuration diagram showing a basic configuration of the heating cooker 1. As shown in FIG. 3, the heating cooker 1 includes a heating chamber 20, a water supply tank 30 for supplying water for generating steam, and steam generation for generating steam by evaporating water supplied from the water supply tank 30. The apparatus 40, the superheated steam production | generation chamber 50 which heats the vapor | steam from the steam generation apparatus 40, and produces | generates superheated steam, and the control apparatus 80 which controls operation | movement of the steam generation apparatus 40, the superheated steam production | generation chamber 50, etc. are provided. Yes.

  A grid-like rack 24 is placed on a tray 21 installed in the heating chamber 20, and an object to be heated 90 is placed at the approximate center of the rack 24.

  The connecting portion 30 a provided on the lower side of the water supply tank 30 can be connected to a funnel-shaped receiving port 31 a provided at one end of the first water supply pipe 31. The lower end side of the auxiliary tank 39 is connected to the other end of the first water supply pipe 31.

  A water level sensor 36 for measuring the water level in the water tank 30 is installed in the auxiliary tank 39. The water level sensor 36 is configured by combining four electrodes having different lengths.

  One end of a second water supply pipe 32 is inserted and attached to the first water supply pipe 31 as a water supply path through which a pump 35 is interposed, while the other end of the second water supply pipe 32 is connected to the upper cover of the steam generator 40. Is inserted and attached. Further, the upper part of the steam generator 40 is communicated with the third water supply pipe 33. One end of a drainage pipe 71 as an example of a drainage path provided with a drainage valve 70 as an example of an opening / closing mechanism is connected to the bottom of the steam generator 40, and the other end of the drainage pipe 71 is connected to the upper lid of the water supply tank 30. Has been inserted. The drainage path is not limited to a pipe, but may be other forms such as a groove.

  When the water tank 30 is connected to the inlet 31 a of the first water supply pipe 31, the water in the water tank 30 is supplied into the auxiliary tank 39 until the water level becomes the same as that of the water tank 30. At that time, the water level in the water tank 30 is detected by detecting which of the three electrodes for detection is immersed in the water in the auxiliary tank 39 by the water level sensor 36.

  Further, the steam generator 40 includes a pot 41 having one end of a drain pipe 71 connected to the lower side, a steam generating heater 42 disposed in the pot 41, and a water level sensor 43 inserted in the upper lid of the pot 41. Have. A fan casing 26 is disposed outside the suction port 25 provided in the upper side of the heating chamber 20. The steam in the heating chamber 20 is sucked from the suction port 25 and sent to the inlet side of the steam supply device 44 by the blower fan 28 installed in the fan casing 26. One end of a steam suction pipe 46 is connected to the suction side of the blower fan 28 in the fan casing 26, and the other end of the steam suction pipe 46 is attached to the upper lid of the pot 41. The suction side communicates with the upper side of the water surface of the pot 41. The water level sensor 43 is composed of two electrodes (reference electrode and detection electrode) having the same length, and a predetermined amount that allows the steam generating heater 42 to be immersed in the pot 41 by the conduction of the both electrodes. It is detected whether there is an amount of water.

  The steam supply device 44 includes a steam supply pipe 63 having one end connected to the upper portion of the fan casing 26 and the other end connected to the superheated steam generation chamber 50. Thus, the external circulation path 60 is formed by the fan casing 26, the steam supply pipe 63 (steam supply device 44), and the superheated steam generation chamber 50.

  One end of a discharge passage 64 is connected to the discharge port 27 provided on the lower side of the side surface of the heating chamber 20, and one end of a first exhaust duct 65 is connected to the other end of the discharge passage 64. . Further, a first exhaust port 66 is provided at the other end of the first exhaust duct 65. In addition, one end of a second exhaust duct 61 adjacent to the first exhaust duct 65 is connected to the fan casing 26 forming the external circulation path 60 via an exhaust passage 67. Further, a second exhaust port 62 is provided at the other end of the second exhaust duct 61. Furthermore, a damper 68 that opens and closes the exhaust passage 67 is disposed at a connection portion of the fan casing 26 with the exhaust passage 67.

  In addition, the superheated steam generation chamber 50 is a dish-shaped case 51 disposed on the ceiling side of the heating chamber 20 and substantially in the center with the opening facing down, and the steam disposed in the dish-shaped case 51. A heater 52 is provided. The bottom surface of the dish-shaped case 51 is formed by a metal ceiling panel 54 provided on the ceiling surface of the heating chamber 20. A plurality of ceiling steam outlets 55 and 56 are formed in the ceiling panel 54. Here, the upper and lower surfaces of the ceiling panel 54 are finished in a dark color by painting or the like. Note that the ceiling panel 54 may be formed of a metal material that changes to a dark color by repeated use or a dark ceramic molded product.

  A magnetron 75 is disposed below the heating chamber 20. Then, the microwave generated in the magnetron 75 is guided to the lower center of the heating chamber 20 by the waveguide 76, and is radiated upward in the heating chamber 20 while being rotated by the rotating antenna 77 driven by the motor 78. Thus, the object to be heated 90 is heated.

  Next, a control system of the cooking device 1 will be described with reference to a control block diagram shown in FIG.

  As shown in FIG. 4, the control device 80 includes a microcomputer, an input / output circuit, and the like. The blower fan 28, the steam heater 52, the damper 68, the drain valve 70, the steam generation heater 42, and the operation Panel 11, water tank water level sensor 36, water level sensor 43, temperature sensor 81 for detecting the temperature in heating chamber 20 (shown in FIG. 3), and humidity sensor 82 for detecting the humidity in heating chamber 20 The pump 35 and the magnetron 75 are connected. And the control apparatus 80 is based on the detection signal from the water level sensor 36 for water tanks, the water level sensor 43, the temperature sensor 81, and the humidity sensor 82, the ventilation fan 28, the steam heating heater 52, the damper 68, the drain valve 70, steam The generator heater 42, the operation panel 11, the pump 35, and the magnetron 75 are controlled according to a predetermined program.

  Hereinafter, the steam heating operation of the heating cooker 1 having the above configuration will be described with reference to FIGS. 3 and 4. When a power switch (not shown) of the operation panel 11 is pressed, the power is turned on, and the cooking operation is started by operating the operation panel 11. Then, first, the control device 80 closes the drain valve 70 and closes the exhaust passage 67 by the damper 68. Then, it is detected by the water supply tank water level sensor 36 that a predetermined amount or more of water has been supplied into the water supply tank 30, and if the water supply tank 30 is normally mounted, the operation of the pump 35 is started. Then, the pump 35 supplies water from the water supply tank 30 into the pot 41 of the steam generator 40 via the second water supply pipe 32. The water overflowing from the pot 41 is returned to the first water supply pipe 31 via the third water supply pipe 33. Thereafter, when the water level sensor 43 detects that the water level in the pot 41 has reached a predetermined water level, the pump 35 is stopped to stop water supply.

  Next, the steam generating heater 42 is energized, and a predetermined amount of water accumulated in the pot 41 is heated by the steam generating heater 42. When the steam generating heater 42 is energized or when the temperature of the water in the pot 41 reaches a predetermined temperature, the blower fan 28 is turned on and the steam heater 52 in the superheated steam generation chamber 50 is energized. Then, the blower fan 28 sucks the gas (including steam) in the heating chamber 20 from the suction port 25 and sends the gas (including steam) to the external circulation path 60. In that case, since the centrifugal fan is used for the ventilation fan 28, a high pressure can be generated compared with the case where a propeller fan is used. Furthermore, by rotating the centrifugal fan used for the blower fan 28 at a high speed with a DC motor, the flow velocity of the circulating airflow can be extremely increased.

  Next, when the water in the pot 41 of the steam generator 40 boils, saturated steam is generated, and the generated saturated steam is sucked into the fan casing 26 in the fan casing 26, which is at a negative pressure due to the rotation of the blower fan 28. It is sucked in through the steam suction pipe 46 and joins the circulating airflow passing through the external circulation path 60. Then, the steam discharged from the fan casing 26 flows into the superheated steam generation chamber 50 through the steam supply pipe 63 at a high speed.

  The steam that has flowed into the superheated steam generation chamber 50 is heated by the steam heater 52 to become superheated steam at approximately 300 ° C. (depending on the cooking content). A part of this superheated steam is ejected downward from the plurality of ceiling steam outlets 55 provided in the lower ceiling panel 54 in the heating chamber 20. Further, the other part of the superheated steam is ejected toward the oblique side in the heating chamber 20 from the ceiling steam outlet 56 provided in the peripheral portion of the ceiling panel 54 obliquely outward.

  Thus, the superheated steam ejected toward the lower side of the heating chamber 20 is vigorously supplied toward the heated object 90 at the center, and the superheated steam ejected toward the oblique side of the heating chamber 20. Is supplied by being reflected from the side wall of the heating chamber 20 and ascending from the lower side of the article 90 to be heated. As a result, in the heating chamber 20, convection occurs in such a manner that it blows down at the center and rises outside thereof. Then, the convection steam is sequentially sucked into the suction port 25 and repeatedly circulates through the external circulation path 60 and returns to the heating chamber 20 again.

  In this way, by forming convection of superheated steam in the heating chamber 20, the superheated steam from the superheated steam generation chamber 50 is blown from the ceiling steam while maintaining the temperature and humidity distribution in the heating chamber 20 uniform. The object to be heated 90 can be efficiently ejected from the outlet 55 and placed on the rack 24, and the object to be heated 90 is heated by the collision of the superheated steam. In that case, the superheated steam that has contacted the surface of the object to be heated 90 also heats the object to be heated 90 by releasing latent heat when dew condensation occurs on the surface of the object to be heated 90. As a result, a large amount of heat of the superheated steam can be reliably and promptly applied to the entire surface of the article 90 to be heated. Therefore, it is possible to realize heat cooking with no spots and good finish.

  Further, when time elapses during the cooking operation, the amount of steam in the heating chamber 20 increases, and the surplus amount of steam is discharged from the discharge port 27 to the discharge passage 64 and the first exhaust duct 65. Through the first exhaust port 66 to the outside.

  After cooking is finished, the control device 80 displays a cooking end message on the operation panel 11, and further sounds a signal by a buzzer (not shown) provided on the operation panel 11. When a user who knows the end of cooking by these messages and buzzer opens the door 12, the control device 80 detects that the door 12 has been opened by a sensor (not shown) and opens the damper 68 of the exhaust passage 67. Open instantly. Then, the fan casing 26 of the external circulation path 60 communicates with the second exhaust duct 61 via the exhaust passage 67, and the steam in the heating chamber 20 is blown by the blower fan 28 through the suction port 25, the fan casing 26, and the exhaust passage 67. And it is discharged from the second exhaust port 62 through the second exhaust duct 61. This damper operation functions similarly even if the user opens the door 12 during cooking. Therefore, the user can safely remove the object to be heated 90 from the heating chamber 20 without being exposed to steam.

  The above description is for the steam heating operation.

  On the other hand, in the case of the microwave heating operation, when the operation panel 11 is operated by the user and the start key (not shown) is pressed after the microwave cooking menu is determined, the microwave heating cooking is performed. Operation starts. Then, the control device 80 drives the magnetron 75 to supply microwaves to the heated object 90 via the waveguide 76 and the rotating antenna 77, thereby heating the heated object 90. In that case, a non-metal receiving tray through which the microwave on which the article to be heated 90 is placed is laid, for example, on the bottom plate of the heating chamber 20.

  FIG. 5 is a plan view showing a bottom surface 101 in the heating chamber 20 of the heating cooker 1, and the bottom surface 101 shown in FIG. 5 has a substantially rectangular shape, and the rear surface side of the substantially rectangular bottom surface 101 ( A drain hole 102 is formed in the vicinity of one corner portion on the upper side in FIG. A mesh-like filter portion (not shown) is attached to the opening of the drain hole 102 on the heating chamber 20 side so as to prevent clogging of solids, while a drainage path (not shown) connected to the drain hole 102. The lower end of the is opened above the dew receiving part (not shown) at the bottom. A material having heat resistance and water repellency is coated on the bottom surface 101 in the heating chamber 20. Note that the bottom of the heating chamber may be made of a material having water repellency.

  A drainage pattern 103 made of a hydrophilic material is formed on the bottom surface 101 in the heating chamber 20 by painting or printing, and water is drained at a position lower than the rear surface side of the bottom surface 101 in the heating chamber 20 and the drainage pattern 103. A hole 102 is provided.

  The drainage pattern 103 includes a first pattern portion 103 a formed in a lattice shape and a second pattern portion 103 b that connects a part of the outside of the first pattern portion 103 a and the drain hole 102.

  The bottom surface 101 in the heating chamber 20 is inclined so that the condensed water collected on the bottom surface 101 in the heating chamber 20 is guided to the drain hole 102 along the drainage pattern 103.

  In the heating cooker 1, the condensed water accumulated on the bottom surface 101 in the heating chamber 20 is guided to the drain hole 102 along the drainage pattern 103, and is generated in the heating chamber by steam heating cooking and accumulated at the bottom. The condensed water flows into the drain hole 102 along the drain pattern 103 made of a hydrophilic material, and can be drained from the drain hole 102 to the bottom dew receiving portion (not shown). Further, by coating the bottom surface 101 in the heating chamber 20 with a water-repellent material, it is possible to repel the dew condensation water at a portion where there is no drainage pattern and to easily transmit the hydrophilic drainage pattern 103. Therefore, the dew condensation water in the heating chamber can be easily treated with a simple configuration, and the wiping work can be reduced.

  Further, by coating the bottom surface 101 in the heating chamber 20 with a water-repellent material, it is possible to repel the dew condensation water at a portion where there is no drainage pattern and to easily transmit the hydrophilic drainage pattern 103.

  Further, the bottom surface 101 in the heating chamber 20 has a hydrophilicity by providing an inclination so that water accumulated on the bottom surface 101 in the heating chamber 20 is guided to the drain hole 102 along the drainage pattern 103. The flow of water flowing into the drain hole 102 along the drainage pattern 103 made of material becomes smooth, and drainage performance is improved.

  In addition, by forming the drainage pattern 103 in a lattice shape, the drainage performance of the entire bottom surface 101 in the heating chamber 20 can be improved.

  The shape of the drain pattern on the bottom surface 101 in the heating chamber 20 is not limited to this. For example, as shown in FIG. 6, a drainage pattern 203 formed radially from the vicinity of the drain hole 102 may be used. In FIG. 6, drainage patterns 204 and 205 that connect the tips of the radial drainage patterns 203 are also formed. The drainage pattern 203 includes a first pattern portion 203a that is formed radially from the vicinity of the drain hole 102, and a portion of the first pattern portion 203a near the drain hole 102 that connects the drain hole 102. 2 pattern portions 203b.

  In the case of FIG. 6, by making the drainage pattern 203 radiate from the vicinity of the drain hole 102, the bent portion of the drainage pattern 203 is reduced and the condensed water easily flows, so that drainage performance can be improved.

  Further, by forming a drain hole 102 in the vicinity of one corner portion on the rear surface side of the substantially rectangular bottom surface 101, the dew condensation water accumulated on the bottom surface 101 flows into the drain hole 102 along the drainage patterns 103 and 203. It is possible to easily provide the inclination of the bottom surface 101 to be guided.

  FIG. 7A shows a cross-sectional view of the heating cooker 100 with the door 12 closed as seen from the side, and FIG. 7B shows a cross-sectional view of the heating cooker 100 with the door 12 open as seen from the side. The figure is shown. 7A and 7B has a different appearance from the heating cooker 1 shown in FIGS. 1 and 2, and is a model in which an operation panel is arranged on the front side of the door 12. FIG.

  As shown in FIG. 7A, a dew receiving portion 120 that receives dew condensation water dripping from the inner surface side of the door 12 when the door 12 is opened is provided on the front side and the lower side of the main body casing 10. The dew receiving portion 120 is detachably attached in the front-rear direction from the front side. Further, a drain pipe 110 is disposed below the heating chamber 20, and one end of the drain pipe 110 is connected to a drain hole 102 provided on the bottom surface 101 and the back surface side in the heating chamber 20, The end is connected to the lower side of the opening 20 a of the main body casing 10. The outlet 110a at the other end of the drain pipe 110 is closed by the inner surface of the door 12 with the door 12 closed. Thereby, when the door 12 is closed and heating cooking using steam is performed, the heating chamber 20 is kept in a substantially sealed state.

  The outlet portion 110a of the drainage pipe 110 or at least one of the inner surfaces of the door 12 facing the outlet portion 110a is securely connected between the outlet portion 110a of the drainage pipe 110 and the inner surface of the door 12 with the door 12 closed. You may provide the sealing member to seal.

  Then, as shown in FIG. 7B, when the door 12 is opened, the outlet 110a of the drain pipe 110 is opened, and the condensed water accumulated on the bottom surface in the heating chamber 20 is drained through the drain hole 102. It flows through and drops downward from the outlet 110 a of the drain pipe 110, and the condensed water that has dropped is accumulated in the dew receiving part 120.

  The mechanism for opening and closing the outlet 110a of the drainage pipe 110 is not limited to the mechanism shown in FIGS. 7A and 7B, and other means linked to the opening and closing of the door may be used.

  Moreover, you may make it keep the heating chamber 20 in the substantially sealed state when cooking by heating by opening and closing the drain pipe 110 using a valve. For example, the configuration shown in FIGS. 8A and 8B may be employed.

  FIG. 8A shows a cross-sectional view of the main part of the heating cooker 100 with the door 12 closed, as viewed from the side, and FIG. 8B shows the main part of the heating cooker 100 with the door 12 open. A cross-sectional view seen from the side is shown. In addition, the same reference number is attached | subjected to the component same as the heating cooker shown to FIG. 7A and FIG. 7B.

  As shown in FIG. 8A, a valve 130 is disposed in the vicinity of the outlet 110 a of the drain pipe 110. This valve 130 has a drive lever 130 for opening and closing, and one end of a horizontally slidable link 132 is attached to the front end side of the drive lever 130 so as to be rotatable and slidable in the longitudinal direction of the drive lever 130. Yes. The link 132 is biased toward the front side by a spring 133.

  Here, when the door 12 is closed, the link 132 is sunk in a state of sliding to the rear side against the urging force of the spring 133, and the valve 130 is closed by the link mechanism of the drive lever 130 and the link 132. . Thereby, when cooking by heating using steam, the heating chamber 20 is kept in a substantially sealed state. The link mechanism of the drive lever 130 and the link 132 and the spring 133 constitute an opening / closing mechanism control unit.

  8B, when the door 12 is opened, the link 132 slides toward the front side by the urging force of the spring 133, and a part protrudes from the front surface of the casing 10, and the drive lever 130 and the link 132 are The valve 130 is opened by the link mechanism. Thereby, the condensed water accumulated on the bottom surface in the heating chamber 20 flows through the drainage pipe 110 through the drain hole 102 and drops downward from the outlet 110a of the drainage pipe 110. It collects in the dew receiving part 120.

  The mechanism for opening and closing the valve 130 is not limited to the link mechanism shown in FIGS. 8A and 8B, and an electromagnetic valve that interlocks with opening and closing of the door may be used.

  According to the heating cooker 100 having the above-described configuration, when cooking is performed with the door 12 closed, the heating chamber is kept in a state in which the passage in the drainage pipe 110 serving as a drainage path is closed by the opening / closing mechanism (valve 130). Condensed water generated in the heating chamber 20 accumulates on the bottom surface while keeping 20 in a substantially sealed state. When the door 12 is opened after cooking, the passage in the drainage pipe 110, which is a drainage path, is opened by an opening / closing mechanism (shown in FIGS. 7A and 7B), so that the condensation accumulated on the bottom in the heating chamber 20 The water flows out through the drain hole 102 and the drain pipe 110, and is drained to the outside from the outlet 110a of the drain pipe 110 that opens to the outside. Therefore, the dew condensation water in the heating chamber 20 can be easily treated with a simple configuration, and the wiping work can be reduced. The condensed water drained to the outside is accumulated in the dew receiving portion 120 shown in FIGS. 8A and 8B, but may be drained to the outside via a drain hose.

  Moreover, the door 12 is opened and the drainage treatment is performed by opening the valve 130 by the opening / closing mechanism control unit (130, 132, 133) that controls the opening / closing of the valve 130 as the opening / closing mechanism according to the opening / closing operation of the door 12. The valve 130 is closed and the heating chamber 20 is maintained in a low oxygen state until the door 12 is opened, so that the valve 130 can be reliably opened and closed by opening and closing the door 12 without any other operation. Can do.

  Moreover, in FIG. 7A and FIG. 7B, since the exit part 110a of the drainage pipe 110 is closed by the back surface of the door 12 by closing the door 12 below the heating chamber 20 on the front surface of the main body casing 10, The outlet 110a of the drain pipe 110 is securely closed, and the heating chamber 20 is kept almost sealed. On the other hand, opening the door 12 opens the outlet 110a of the drainage pipe 110 that has been closed by the back surface of the door 12, so that it is possible to surely drain the condensed water that has accumulated on the bottom of the heating chamber 20 after cooking. it can.

  8A and 8B, the valve 130 disposed in the drain pipe 110 is closed by closing the door 12, so that the drain pipe 110 is securely closed during cooking and the heating chamber 20 is almost sealed. Kept in a state. On the other hand, by opening the door 12, the valve 130 disposed in the drain pipe 110 is opened, so that the condensed water accumulated on the bottom in the heating chamber 20 after the cooking can be surely drained.

  8A and 8B, the opening / closing operation of the door 12 is transmitted to the driving lever 131 which is the driving portion of the valve 130 by using the link mechanism (131 to 133) interlocked with the opening / closing of the door 12, and the valve 130 is moved. By opening and closing, the passage in the drainage pipe 110 can be opened and closed according to the opening and closing of the door 12 with a simple configuration.

  In the cooking device of the above embodiment, the valve 130 is opened / closed according to the opening / closing operation of the door 12, but a drain button is provided, and the opening / closing mechanism control unit controls the opening / closing mechanism according to the operation of the drain button. Opening and closing may be controlled. In this case, the waste water treatment can be performed according to the user's preference. Alternatively, according to the cooking sequence, an opening / closing mechanism control unit that controls opening / closing of the opening / closing mechanism is provided. For example, when cooking using steam is finished, the opening / closing mechanism control unit opens the opening / closing mechanism to perform drainage treatment. It may be. In this case, it is possible to perform wastewater treatment that is linked to the cooking sequence.

  In the above-described embodiment, the drainage pattern 103 made of a hydrophilic material is formed on the bottom surface 101 in the heating chamber 20 by painting or printing as a water collecting portion that has been subjected to hydrophilic treatment for drainage on the water repellent surface. The water collecting portion is not limited to this, and any water collecting surface that has been subjected to a hydrophilic treatment for drainage may be used. As a result, the condensed water generated in the heating chamber due to cooking and accumulated at the bottom flows smoothly into the drain hole.

  Moreover, in the said embodiment, although the pattern 103,203 for drainage was used as a some line pattern part provided on the bottom face in a heating chamber, a some line pattern part is not restricted to this.

  Further, the hydrophilic treatment may be an anti-mirror surface treatment by subjecting a part of the bottom surface in the heating chamber to a sandblast treatment.

  Further, the water collecting part may be a groove provided on the bottom surface in the heating chamber. In this case, the water collected on the bottom surface of the heating chamber gathers in a groove provided on the bottom surface of the heating chamber and is guided to the drain hole along the groove, thereby being generated in the heating chamber by cooking and collecting on the bottom. Condensed water flows smoothly into the drain hole. For example, grooves may be provided in place of the drainage patterns 103 and 203 in FIGS.

  In addition, the bottom surface of the heating chamber may be recessed in a substantially mortar shape with a drain hole as a bottom. In this case, the flow of water flowing toward the drain hole on the bottom surface of the heating chamber becomes smooth, and drainage performance is improved.

  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.

FIG. 1 is an external perspective view of a cooking device according to the present invention. FIG. 2 is an external perspective view of the heating cooker with the door opened. FIG. 3 is a schematic configuration diagram of the cooking device. FIG. 4 is a control block diagram of the cooking device. FIG. 5 is a plan view showing the bottom surface of the heating chamber of the cooking device. FIG. 6 is a plan view showing another example of the bottom surface in the heating chamber of the cooking device. FIG. 7A is a cross-sectional view of the heating cooker viewed from the side with the door closed. FIG. 7B is a cross-sectional view of the heating cooker viewed from the side with the door open. FIG. 8A is a cross-sectional view of the main part of the cooking device with the door closed as seen from the side. FIG. 8B is a cross-sectional view of the main part of the cooking device with the door opened, as seen from the side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Heating cooker 10 ... Main body casing 11 ... Operation panel 12 ... Door 13 ... Handle 14 ... Window 20 ... Heating chamber 28 ... Blower fan 30 ... Water supply tank 30a ... Connection part 31 ... 1st water supply pipe 31a ... Inlet 32 ... 2nd water supply pipe 33 ... 3rd water supply pipe 35 ... Pump 36 ... Water level sensor for water supply tank 39 ... Auxiliary tank 40 ... Steam generating device 41 ... Pot 42 ... Steam generating heater 43 ... Water level sensor 44 ... Steam supply device 50 ... Superheated steam Generation chamber 51 ... Dish type case 52 ... Steam heater 60 ... External circulation path 70 ... Drain valve 71 ... Drain pipe 75 ... Magnetron 76 ... Waveguide 77 ... Rotating antenna 78 ... Motor 80 ... Control device 90 ... Object to be heated 100 ... Heat cooker 101 ... Bottom 102 ... Drain hole 103 ... Drain pattern 103a ... First pattern part 103b ... 2nd pattern part 110 ... Drain pipe 110a ... Outlet part 120 ... Dew receiving part 131 ... Drive lever 132 ... Link 133 ... Spring 203 ... Drain pattern 203a ... 1st pattern part 203b ... 2nd pattern part 204 ... Drain pattern 205 ... Drain pattern

Claims (7)

A body casing;
A steam generator disposed in the main casing and generating steam;
A heating chamber disposed in the main casing and supplied with steam from the steam generator;
A door that is disposed on the front side of the main casing and opens and closes the opening of the heating chamber;
A drain hole provided in the bottom surface of the heating chamber;
Disposed below the heating chamber in the main body casing, one end is connected to the drain hole, and the drainage path provided in the main body casing so that the outlet on the other end side opens to the outside,
An opening and closing mechanism provided in the drainage path;
An opening / closing mechanism control unit for controlling opening / closing of the opening / closing mechanism,
The heating chamber is hermetic and has an oxygen concentration lower than that of the atmosphere when steam is supplied from the steam generator in a state where the opening / closing mechanism is closed by the opening / closing mechanism controller. A heating cooker. The heating cooker according to claim 1, wherein
The cooking device according to claim 1, wherein the opening / closing mechanism control unit controls opening / closing of the opening / closing mechanism in accordance with an opening / closing operation of the door. The heating cooker according to claim 1, wherein
It also has a drain button,
The cooking device according to claim 1, wherein the opening / closing mechanism control unit controls opening / closing of the opening / closing mechanism in accordance with an operation of the drain button. The heating cooker according to claim 1, wherein
The open / close mechanism control unit controls opening / closing of the open / close mechanism according to a cooking sequence. The heating cooker according to claim 1, wherein
The opening / closing mechanism includes a rear side of the door and a front surface of the main body casing in a state where the outlet portion of the drainage path is open and the door is closed below the heating chamber on the front surface of the main body casing. The outlet portion of the drainage channel is closed by the back surface of the door, while the outlet portion of the drainage channel is closed by the back surface of the door while the door is open. A cooking device characterized by an opening mechanism. The heating cooker according to claim 1, wherein
The opening / closing mechanism has a valve disposed in the drainage path,
The cooking device characterized in that the valve is opened and closed according to the opening and closing of the door by the opening and closing mechanism control unit. The cooking device according to claim 5,
The open / close mechanism control unit opens and closes the valve by transmitting an opening / closing operation of the door to the drive unit of the valve by using a link mechanism interlocked with opening / closing of the door. .

Images