JP2008002763A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent dew condensation on a cabinet by the steam discharged from a heating chamber. <P>SOLUTION: Residual steam in the heating chamber 20 is discharged from a first exhaust port 65 to the external through a discharge passage 64 and an exhaust pipe 69 of a steam cap 61 from a discharge port 27. Here, a space 71 around the exhaust pipe 69 in the steam cap 61 is constituted to allow the cooled and dry air to pass through a circuit board 81. Thus the steam discharged from the first exhaust port 65 is surrounded by the dry air discharged from a third exhaust port 72 communicated with the space 71, a gas discharged from the first exhaust port 65 and the third exhaust port 72 is brought into contact with the dry air surrounding an outer side when the air is brought into contact with the cabinet 10. Thus the dew condensation on the cabinet 10 around the steam cap 61 is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device that cooks food using steam.

  2. Description of the Related Art Conventionally, there is a steam cooker that uses steam to heat an object to be heated such as food, and sends superheated steam into a heating chamber (Patent Document 1 (Japanese Patent Laid-Open No. 2006-29695)). In this steam cooker, as shown in FIG. 9, the opening end of the exhaust duct 122 is attached to the inner surface of the top plate 121 of the cabinet, and the exhaust port that communicates the exhaust duct 122 to the outside is installed in the opening end. 123 is provided.

  In the mixing chamber 124 attached to the upper surface of the top plate 121, the steam discharged from the exhaust duct 122 through the exhaust port 123 and the outside air sucked from the air intake port 126 by the rotation of the fan 125 are collected. Mix and stir. In that case, the front wall 127 acts as a baffle plate and promotes the stirring action of the steam and the outside air. Thus, when the steam and the outside air are agitated and mixed, the steam temperature is lowered, and condensing is performed accordingly, and the amount of steam is reduced. And the vapor | steam which is not condensed blows off from the blower outlet 128 ahead.

  In this way, the temperature of the surplus steam discharged from the discharge port 130 of the heating chamber 129 through the discharge passage 131 is lowered, the steam density is reduced, and the blown-out steam becomes colorless and discharged. The

However, in the conventional steam cooker, dew condensation water is generated and condensed in the mixing chamber 124 as it is condensed by stirring and mixing with the outside air. Further, the steam blown forward from the air outlet 128 of the mixing chamber 124 comes into contact with the top plate 121 of the cabinet around the mixing chamber 124, condenses to generate condensed water, and the top plate around the mixing chamber 124. It will adhere to 121. As a result, there is a problem that rust, mold, dirt, odor, and the like adhere to the inside of the mixing chamber 124 and its surroundings, resulting in unsanitary conditions.
JP 2006-29695 A

  Therefore, an object of the present invention is to provide a heating cooker that eliminates condensation in the cabinet due to excess steam exhausted from the heating chamber and prevents adhesion of rust, mold, dirt, odor, and the like.

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 body casing and for heating an object to be heated by steam supplied from the steam generator;
A steam exhaust pipe for exhausting the steam from the heating chamber to the outside of the main body casing, and an air outside the heating chamber disposed near the steam exhaust pipe and mounted on the top plate of the main body casing. An exhaust device including an air exhaust passage for exhausting outside the main body casing,
The steam exhaust pipe and the air exhaust passage are arranged to exhaust steam from the heating chamber and air in the main body casing together to the outside of the main body casing.

  According to the said structure, the vapor | steam from a heating chamber is exhausted from the steam exhaust pipe in the exhaust apparatus with which the top plate of the main body casing was mounted | worn. At that time, dry air outside the heating chamber is exhausted together with the steam from the heating chamber from an air exhaust passage disposed in the vicinity of the steam exhaust pipe in the exhaust device. Therefore, the vapor density of the steam exhausted from the steam exhaust pipe is reduced by the dry air exhausted from the air exhaust passage, and condensation may occur on the top plate of the main body casing around the exhaust device. Is prevented. Furthermore, it is possible to prevent the steam discharged from the steam exhaust pipe from appearing white.

Moreover, in the heating cooker of one embodiment,
A circuit board on which an electronic circuit is mounted;
A cooling fan that cools the circuit board by supplying air taken from an air intake provided in the main body casing to the circuit board;
The air exhausted from the air exhaust passage is air after cooling the circuit board supplied by the cooling fan.

  According to this embodiment, since the air after cooling the circuit board supplied by the cooling fan is used as the air exhausted from the air exhaust passage, the air outside the heating chamber is exhausted from the air exhaust passage. Therefore, the exhaust device can be formed at low cost without requiring a dedicated fan.

Moreover, in the heating cooker of one embodiment,
The steam exhaust pipe has a first exhaust port,
The air exhaust passage has a second exhaust port disposed adjacent to the first exhaust port around the first exhaust port.

  According to this embodiment, the second exhaust port of the air exhaust passage is disposed around the first exhaust port of the steam exhaust pipe and adjacent to the first exhaust port. Therefore, the steam from the heating chamber exhausted from the first exhaust port to the outside of the main body casing is caused by the dry air from the outside of the heating chamber exhausted from the second exhaust port to the outside of the main body casing. Can be surrounded. Therefore, when the gas exhausted from the first exhaust port and the second exhaust port touches the top plate of the main body casing, the outside dry air comes into contact with the top plate of the main body casing. Condensation is prevented.

Moreover, in the heating cooker of one embodiment,
The steam exhaust pipe has an exhaust port,
The steam exhaust pipe and the air exhaust passage are provided with a communication portion that communicates the tip of the air exhaust passage with the steam exhaust pipe.

  According to this embodiment, the front end portion of the air exhaust passage and the steam exhaust pipe are communicated with each other by the communicating portion. Therefore, dry air outside the heating chamber that has passed through the air exhaust passage enters the steam exhaust pipe through the communication portion, and is stirred and mixed with the steam from the heating chamber in the steam exhaust pipe. The Then, the steam from the heating chamber and the dry air outside the heating chamber are combined and exhausted from the exhaust port of the steam exhaust pipe to the outside of the main body casing. Thus, the vapor density of the vapor exhausted from the exhaust port is reduced.

Moreover, in the heating cooker of one embodiment,
The air exhaust passage surrounds at least a part of the periphery of the steam exhaust pipe and is disposed adjacent to the steam exhaust pipe.

  According to this embodiment, the air exhaust passage is disposed so as to surround at least a part of the periphery of the steam exhaust pipe and to be adjacent to the steam exhaust pipe. Therefore, the structure of the exhaust device can be simplified by integrally forming the steam exhaust pipe and the air exhaust passage. Furthermore, surrounding the steam from the heating chamber exhausted from the steam exhaust pipe to the outside of the main body casing by dry air outside the heating chamber exhausted from the air exhaust passage to the outside of the main body casing; Easy to do.

Moreover, in the heating cooker of one embodiment,
The exhaust device is disposed on the rear side of the main body casing.

  According to this embodiment, since the exhaust device is disposed on the rear side of the main body casing, even if the steam exhausted from the exhaust device is colorless, the colorless steam is not noticed. It is possible to prevent the user from being burned.

  As is clear from the above, the heating cooker according to the present invention is disposed in the vicinity of the steam in the heating chamber from the steam exhaust pipe in the exhaust apparatus mounted on the top plate of the main body casing and the steam exhaust pipe in the exhaust apparatus. Since the dry air outside the heating chamber from the air exhaust passage is exhausted together outside the main body casing, the vapor density of the steam exhausted from the steam exhaust pipe is exhausted from the air exhaust passage. It can be reduced by air. Therefore, it is possible to prevent condensation on the top plate of the main body casing around the exhaust device, and it is possible to prevent adhesion of rust, mold, dirt, odor, and the like due to condensation. Furthermore, it is possible to prevent the steam discharged from the steam exhaust pipe from appearing white.

  Further, if the second exhaust port of the air exhaust passage is arranged adjacent to the first exhaust port around the first exhaust port of the steam exhaust pipe, the air is exhausted from the first exhaust port. The steam from the heating chamber can be surrounded by dry air from outside the heating chamber exhausted from the second exhaust port. Therefore, when the gas exhausted from the first exhaust port and the second exhaust port touches the top plate of the main body casing, the outside dry air comes into contact with the top plate of the main body casing. It is possible to prevent condensation.

  In addition, if the front end of the air exhaust passage and the steam exhaust pipe are communicated with each other by a communicating portion, and an exhaust port is provided in the steam exhaust pipe, dry air outside the heating chamber that has passed through the air exhaust passage is removed. The steam from the heating chamber can be stirred and mixed in the steam exhaust pipe and exhausted from the exhaust port. Therefore, the vapor density of the vapor exhausted from the exhaust port can be reduced.

  Moreover, if the air after cooling the circuit board supplied by the cooling fan is used as the air exhausted from the air exhaust passage, a dedicated fan for exhausting air outside the heating chamber from the air exhaust passage The exhaust device can be formed at a low cost.

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

  FIG. 1 is an external perspective view of the heating cooker according to the present embodiment. The heating cooker 1 is provided with an operation panel 11 at the upper part of the front surface of the rectangular parallelepiped cabinet 10, and a door 12 that rotates around the lower end side is provided below the operation panel 11 on the front surface of the cabinet 10. It is provided and roughly configured. 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. 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 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 tray 21 is installed on the bottom surface of the heating chamber 20, and a stainless steel wire rack (not shown) for placing an object to be heated is installed on the tray 21. . Furthermore, a substantially rectangular side surface steam outlet 22 (only one of which is visible in FIG. 2) is provided at the lower part of both side surfaces of the heating chamber 20.

  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 tank 30 that stores steam water, and a steam generator 40 that generates steam by evaporating water supplied from the water tank 30. And a steam heating chamber 50 for heating the steam from the steam generator 40, and a control device 80 for controlling operations of the steam generator 40, the steam heating chamber 50, and the like.

  Further, the water tank 30 and the steam generator 40 are connected by a water supply pipe 33 provided with a pump 35, and the steam generator 40 is provided with a steam generator heater 42. The one end of the external circulation path 60 in which the blower fan 28 is provided on one end side is connected to the outside of the suction port 25 provided in the upper side of the heating chamber 20, and the other end of the external circulation path 60 is The steam heating chamber 50 is connected. A steam supply port 62 is provided between the suction port 25 and the blower fan 28 in the external circulation path 60, and one end of a steam supply pipe 63 that supplies steam from the steam generator 40 is provided in the steam supply port 62. The other end of the steam supply pipe 63 is connected to a steam outlet 41 provided on the top plate of the steam generator 40.

  One end of a discharge passage 64 is connected to the discharge port 27 provided below the side surface of the heating chamber 20, and one end of an exhaust pipe 69 in the steam cap 61 is connected to the other end of the discharge passage 64. Furthermore, a first exhaust port (corresponding to the first exhaust port in the claims) 65 is provided at the other end of the exhaust pipe 69. Further, an exhaust chamber 70 in the steam cap 61 is connected to the external circulation path 60 through an exhaust path 67. Further, the exhaust chamber 70 is in communication with the second exhaust port 66. A damper 68 that opens and closes the exhaust passage 67 is disposed on the exhaust passage 67 on the connection side with the external circulation path 60.

  The steam heating chamber 50 includes a dish-shaped case 51 disposed on the ceiling side of the heating chamber 20 and substantially in the center with the opening facing downward, and the steam heating disposed in the dish-shaped case 51. And a heater 52. 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 are formed in the ceiling panel 54.

  Further, the steam heating chamber 50 is connected to the upper portion of the heating chamber 20 at one end of a steam supply passage 23 extending toward the left and right sides in FIG. The steam supply passage 23 extends downward along both side surfaces of the heating chamber 20, and is connected to a side surface steam outlet 22 provided on the lower side of both side surfaces of the heating chamber 20 at the other end. Has been.

  Next, the control system of the heating cooker 1 will be described.

  The control device 80 includes a microcomputer, an input / output circuit, and the like. As shown in FIG. 4, the blower fan 28, the steam heating heater 52, the steam generating heater 42, the operation panel 11, the pump 35, and a damper are provided. 68 and various valves, a water level sensor, a temperature sensor, and a humidity sensor (all not shown) are connected. Then, based on detection signals from the water level sensor, temperature sensor and humidity sensor, the blower fan 28, the steam heater 52, the damper 68, the valve, the steam generating heater 42, the operation panel 11 and the pump 35 are set according to a predetermined program. Control.

  The control device 80 is mounted on a circuit board 81. The circuit board 81 is taken in by an air flowing in as indicated by an arrow (A) by being taken in from an air intake 83 provided in the lower part of the cabinet 10 by a cooling fan 82. It is supposed to be cooled.

  Hereinafter, the basic operation of the heating cooker 1 having the above configuration will be described with reference to FIGS. 3 and 4. When the user operates the operation panel 11 and selects a menu and then presses a start key (not shown), the cooking operation starts in accordance with the cooking program of the selected menu. Then, first, the control device 80 starts the operation of the pump 35. Then, water is supplied from the water tank 30 into the steam generator 40 via the water supply pipe 33 by the pump 35. Thereafter, when the water level in the steam generator 40 reaches 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 steam generating apparatus 40 is heated by the steam generating heater 42. Thus, when the water in the steam generator 40 boils, saturated steam is generated. When the steam generating heater 42 is energized or when the temperature of the water in the steam generating apparatus 40 reaches a predetermined temperature, the blower fan 28 is turned on and the steam heater 52 in the steam heating 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 sucks saturated steam generated in the steam generation device 40 from the steam supply port 62 to enter the external circulation path 60. It sends out gas (including steam). Thus, the steam from the heating chamber 20 and the steam from the steam generator 40 sent out by the blower fan 28 flow into the steam heating chamber 50 through the external circulation path 60 at a high speed.

  The steam that has flowed into the steam heating chamber 50 is heated by the steam heater 52 and becomes 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, another part of the superheated steam is ejected from the side surface steam outlets 22 on both side surfaces of the heating chamber 20 through the steam supply passages 23 provided on the left and right sides of the steam heating chamber 50.

  Thus, the superheated steam ejected from the ceiling side of the heating chamber 20 is vigorously supplied toward the heated object side in the center, and the superheated steam ejected from the left and right side surfaces of the heating chamber 20 collides with the receiving tray 21. Then, it is supplied while being lifted so as to wrap the object to be heated from below the object 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.

  Thus, by forming the convection of the superheated steam in the heating chamber 20, the superheated steam from the steam heating chamber 50 is sent to the ceiling steam outlet 55 while maintaining the temperature / humidity distribution in the heating chamber 20 uniform. And the side surface steam outlet 22 and can efficiently collide with the object to be heated placed on the rack, and the object to be heated is heated by the collision of the superheated steam.

  Further, when time elapses during the cooking operation, the amount of steam in the heating chamber 20 increases, and the surplus amount of steam flows from the discharge port 27 into the discharge passage 64 and the steam cap 61. The air is exhausted from the first exhaust port 65 through the exhaust pipe 69. At that time, the dry air that has cooled the circuit board 81 passes through the space 71 around the exhaust pipe 69 in the steam cap 61. Thus, the steam exhausted from the first exhaust port 65 is wrapped with dry air exhausted from the third exhaust port (corresponding to the second exhaust port in the claims) 72 provided in the space 71. Thus, when the gas exhausted from the first exhaust port 65 and the third exhaust port 72 touches the cabinet 10, the dry air surrounding the outside is touched. In this way, condensation on the cabinet 10 around the steam cap 61 is prevented. The water condensed in the discharge passage 64 flows down in the discharge passage 64 and is guided to the receiving tray 21, and is processed together with the water generated by cooking after the cooking.

  After cooking, the control device 80 displays a cooking end message on the operation panel 11, and a buzzer (not shown) provided on the operation panel 11 sounds a signal. When the 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 the damper 68 of the external circulation path 60. Open instantly. Then, the external circulation path 60 communicates with the exhaust chamber 70 of the steam cap 61, and the steam in the heating chamber 20 is blown by the blower fan 28 via the suction port 25, the external circulation path 60, the exhaust passage 67 and the exhaust chamber 70. And is discharged from the second exhaust port 66. This damper operation also functions in the same manner when the user opens the door 12 during cooking. Therefore, the user can safely take out the object to be heated from the heating chamber 20 without being exposed to the steam.

  It should be noted that the exhaust operation may be executed by controlling the damper 68 and the blower fan 28, etc., at a predetermined time before the end of cooking. In that case, the steam in the heating chamber 20 at the end of cooking can be reduced, and the time until the start of the next cooking can be shortened.

  Hereinafter, the steam cap 61 which is a feature of the present invention will be described in detail.

  Here, the integrated structure including the external circulation path 60, the exhaust path 67, the steam cap 61, and the like will be referred to as a steam circulation exhaust apparatus. FIG. 5 is a diagram showing the appearance of the steam circulation exhaust device. 5 (a) is a front view, FIG. 5 (b) is a plan view, and FIG. 5 (c) is a rear view. FIG. 5 (d) is a cross-sectional view taken along the line AA 'in FIG. 5 (a).

  In FIG. 5A, reference numeral 91 denotes a cylindrical portion that is provided on the end surface of the fan casing 26 that houses the blower fan 28 and that has an opening connected to the suction port 25 of the heating chamber 20. The blower fan 28 housed in the fan casing 26 is rotationally driven by a blower motor 92 mounted on the fan casing 26 as shown in FIGS. 5 (c) and 5 (d). In addition, an opening provided at the bottom of one end of the circulation duct 93 that forms a substantially rectangular housing is connected to the opening provided at the upper portion of the side surface of the fan casing 26. Further, a steam supply port 62 is provided on the side surface of the cylindrical portion 91 of the fan casing 26, and a connecting pipe for connecting the steam supply port 62 to the one end of the steam supply pipe 63 at the location of the steam supply port 62. 94 is attached.

  Three pipes 95, 95, 95 are provided on the side surface of the circulation duct 93, which forms a substantially rectangular housing, and communicates the internal space of the circulation duct 93 with the internal space of the dish-shaped case 51 of the steam heating chamber 50. Yes. When the blower fan 28 housed in the fan casing 26 is rotationally driven by the blower motor 92, the gas in the heating chamber 20 is sucked into the cylindrical portion 91 of the fan casing 26 from the suction port 25, and the blower fan 28 is It passes through and is blown into the circulation duct 93 as shown by an arrow (B) in FIG. Then, it is supplied to the dish-shaped case 51 of the steam heating chamber 50 through each pipe 95.

  That is, in the present embodiment, the cylindrical part 91, the fan casing 26, the circulation duct 93 and the pipe 95 constitute the external circulation path 60.

  A racetrack-shaped opening 96 is provided on a side surface of the circulation duct 93 opposite to the side surface on which the pipe 95 is provided to communicate the internal space of the circulation duct 93 with an exhaust passage 67 that forms a substantially rectangular casing. The opening 96 is opened and closed by a racetrack-shaped damper 68. As shown in FIG. 5 (d), a rotating shaft 98 that is rotationally driven by a damper motor 97 is disposed in parallel with the side surface at the upper part of the side surface on the damper 68 side in the circulation duct 93. A damper 68 is attached to the rotary shaft 98 so that the opening 96 can be opened and closed.

  Further, an exhaust chamber 70 of the steam cap 61 is connected to the exhaust passage 67 on the side opposite to the circulation duct 93.

  FIG. 6 is a view showing the structure of the steam cap 61. 6 (a) is a front view seen from the exhaust passage 67 side, FIG. 6 (b) is a plan view, and FIGS. 6 (c) and 6 (d) are side views. FIG. 7 shows a longitudinal section of each part in the steam cap 61. 7 (a) is a cross-sectional view taken along the line BB ′ in FIG. 6 (a), and FIG. 7 (b) is a cross-sectional view taken along the line CC ′ in FIG. 6 (a). (c) is DD 'arrow sectional drawing in Fig.6 (a).

  The steam cap 61 has a rectangular cylindrical shape, and has an exhaust chamber 70 connected to an exhaust passage 67 at one open end thereof, and extends in the vertical direction, and the other of the discharge passage 64 at the lower end thereof. The exhaust pipe 69 to which the ends are connected, the other open end of the exhaust chamber 70 is closed, the front plate portion 99 extending to the upper portion of the exhaust chamber 70 and the side portion of the exhaust pipe 69, and the front plate portion 99 The exhaust chamber 70 and the exhaust pipe 69 are continuously covered and the top plate portion 100 that supports the upper end of the exhaust pipe 69 and the front plate portion 99 and the top plate portion 100 are connected. The side plates 101 and 102 that cover the side portions are roughly configured.

  A second exhaust port 66 for exhausting the steam in the heating chamber 20 to the outside when the damper 68 is opened is formed at the top of the exhaust chamber 70 in the top plate 100. A first exhaust port 65 for exhausting excess steam from the heating chamber 20 to the outside is formed in the upper end of the exhaust pipe 69 in the top panel 100. In addition, a third exhaust port 72 for exhausting dry air that has cooled the circuit board 81 to the outside is formed around the first exhaust port 65 in the top panel 100. The first exhaust port 65, the second exhaust port 66, and the third exhaust port 72 are provided with ribs 103 in a lattice shape in order to prevent insects and foreign matter from entering the steam cap 61. Yes.

  An opening 104 is provided at a location facing the second exhaust port 66 on the side surface of the exhaust chamber 70 having a rectangular cylindrical shape. Then, the opening 104 of the exhaust chamber 70 is surrounded by the front plate 99 and the partition walls 105 to 108 from the periphery of the second exhaust port 66 of the top plate 100 to the periphery of the opening 104 of the exhaust chamber 70. A passage 109 communicating with the second exhaust port 66 of the plate part 100 is formed. As a result, the internal space of the exhaust passage 67 communicates with the second exhaust port 66 of the top plate portion 100 via the exhaust chamber 70 and the passage 109.

  In the above configuration, when the damper 68 is opened, the steam in the heating chamber 20 sucked from the suction port 25 by the blower fan 28 is indicated by an arrow (C) in FIG. 5 (d) and shown in FIG. 7 (b). As indicated by the arrow (D), the air is exhausted from the second exhaust port 66 through the cylindrical portion 91 of the fan casing 26, the fan casing 26, the circulation duct 93, the exhaust passage 67, the exhaust chamber 70 and the passage 109. is there.

  The surplus steam in the heating chamber 20 is exhausted from the discharge passage 64 as shown by arrows (E) in FIGS. 5 (a) and 6 (a) and by arrows (F) in FIG. 7 (c). It reaches the pipe 69. On the other hand, as shown by the arrow (A) in FIG. 3, the dry air after being taken in from the air intake 83 by the cooling fan 82 and cooling the circuit board 81 is shown in FIGS. 5 (a) and 6 (a). ) Is indicated by an arrow (G), and as indicated by an arrow (H) in FIG. 7C, the steam cap 61 is led to a space 71 around the exhaust pipe 69. The steam exhausted from the first exhaust port 65 through the exhaust pipe 69 is surrounded by the dry air exhausted from the third exhaust port 72 through the space 71.

  As a result, when the gas exhausted from the first exhaust port 65 and the third exhaust port 72 touches the cabinet 10, the dry air surrounding the outside comes into contact. Therefore, condensation on the cabinet 10 around the steam cap 61 is prevented. Further, since the steam exhausted from the first exhaust port 65 and the dry air exhausted from the third exhaust port 72 are mixed in the air, the steam density is reduced and the exhaust is exhausted from the first exhaust port 65. The steam never looks white.

  In the present embodiment, the air exhausted from the third exhaust port 72 joined to the surplus steam from the heating chamber 20 exhausted from the first exhaust port 65 is cooled by the cooling fan 82 which is an existing facility. Supplied. Therefore, unlike the conventional steam cooker disclosed in Patent Document 1, it is not necessary to provide a dedicated fan for steam exhaust, and the configuration of the steam exhaust mechanism is simplified.

  By the way, in the above-described embodiment, excess steam from the heating chamber 20 is exhausted from the first exhaust port 65, and dry air after cooling the circuit board 81 is provided around the first exhaust port 65. Further, the air is exhausted from the third exhaust port 72. However, in order to prevent condensation in the cabinet 10 around the steam cap 61 and to make the steam exhausted from the first exhaust port 65 colorless, the surplus steam from the heating chamber 20 and the air after cooling the circuit board 81 are mixed. And it is realizable also by exhausting from the same exhaust port.

  FIG. 8 is a cross-sectional view taken along the line DD ′ of the steam cap 61 in a modified example in which surplus steam from the heating chamber 20 and air after cooling the circuit board 81 can be mixed. In this modification, the third exhaust port 72 in the top plate portion 100 is eliminated, and a portion facing the front plate portion 99 in the upper portion of the peripheral wall 110 of the exhaust pipe 69 is cut away, so that the upper portion of the space 71 around the exhaust pipe 69 is removed. Is connected to the inside of the exhaust pipe 69.

  Therefore, the air after cooling the circuit board 81 rising in the space 71 around the exhaust pipe 69 strikes the top plate portion 100 and changes its direction, and enters the exhaust pipe 69 through the communication portion 111. Then, it is mixed with surplus steam from the heating chamber 20 rising in the exhaust pipe 69 and exhausted from the first exhaust port 65.

  In this case, since the vapor density of the vapor exhausted from the first exhaust port 65 is reduced, condensation on the cabinet 10 around the vapor cap 61 is prevented. Furthermore, the steam exhausted from the first exhaust port 65 does not look white.

  By the way, in the said embodiment, the surplus steam from the said heating chamber 20 is surrounded by the air after cooling the circuit board 81, or the surplus steam from the heating chamber 20 and the air after cooling the circuit board 81 are mixed. In this case, it is desirable to keep the temperature of the air after cooling the circuit board 81 at a predetermined temperature or higher. By doing so, the temperature of the gas exhausted from the first exhaust port 65 and the third exhaust port 72 can be raised above a certain temperature, and condensation on the cabinet 10 around the steam cap 61 can be more effectively prevented. It becomes possible to do.

  In the above-described embodiment, the space 71 as the air discharge passage through which the dry air that has cooled the circuit board 81 passes is adjacent to the exhaust pipe 69 around the exhaust pipe 69 as the steam discharge pipe. Provided. However, in the present invention, the air discharge passage is not necessarily provided around the steam discharge pipe and adjacent to the steam discharge pipe, and the steam discharge pipe and the air discharge passage are provided separately from each other. There is no problem. In short, the third exhaust port 72 for discharging the air from the air discharge passage is arranged adjacent to the first exhaust port 65 around the first exhaust port 65 for discharging the steam from the steam discharge pipe. It only has to be done. However, in accordance with the arrangement of the third exhaust port 72 with respect to the first exhaust port 65, the air exhaust passage is provided around the steam exhaust tube adjacent to the steam exhaust tube from the first exhaust port 65. Needless to say, the exhausted steam is easily surrounded by the air exhausted from the third exhaust port 72.

  In the embodiment, only the surplus steam from the heating chamber 20 is exhausted together with the dry air after the circuit board 81 is cooled. However, when the damper 68 is opened, the steam from the heating chamber 20 exhausted to the outside from the second exhaust port 66 through the external circulation path 60 is combined with the dry air after the circuit board 81 is cooled. It is also possible to exhaust.

  Further, in the modification of the above embodiment, the communication portion 111 that communicates the space 71 around the exhaust pipe 69 with the inside of the exhaust pipe 69 is provided in the upper portion of the peripheral wall 110 of the exhaust pipe 69, Thus, the excess steam from the heating chamber 20 and the air after cooling the circuit board 81 are mixed. However, the location where the surplus steam from the heating chamber 20 and the air after cooling the circuit board 81 are mixed is not necessarily limited to the upper portion of the exhaust pipe 69.

  Moreover, in the said embodiment, the case of the heating cooker 1 provided with the said steam temperature rising chamber 50, and being able to heat a to-be-heated material with the superheated steam from the steam temperature rising chamber 50 is demonstrated as an example, and demonstrated. Yes. However, in the present invention, in the case of a heating cooker capable of switching between heating cooking using superheated steam and heating cooking using non-superheated steam, there is no steam heating chamber 50, and the object to be heated by non-superheated steam from the steam generator 40. Needless to say, the present invention can also be applied to the case of a heating cooker that heats.

It is an external appearance perspective view in the heating cooker of this invention. It is an external appearance perspective view of the state which opened the door of the heating cooker shown in FIG. It is a schematic block diagram of the heating cooker shown in FIG. It is a control block diagram of the heating cooker shown in FIG. It is a figure which shows the external appearance of a steam circulation exhaust apparatus. It is a figure which shows the structure of the vapor | steam cap in FIG. 3 and FIG. It is a figure which shows the longitudinal cross-section of each part in the steam cap in FIG. It is sectional drawing of the vapor | steam cap different from FIG. It is sectional drawing of the exhaust duct and mixing chamber in the conventional steam cooker.

Explanation of symbols

1 ... Heat cooker,
20 ... heating chamber,
25 ... Suction port,
26: Fan casing,
27 ... discharge port,
28 ... Blower fan,
40 ... steam generator,
50 ... Steam heating chamber,
60 ... External circuit,
64 ... discharge passage,
61 ... Steam cap,
65. First exhaust port,
66 ... the second exhaust port,
67 ... exhaust passage,
68 ... Damper,
69 ... exhaust pipe,
70: exhaust chamber,
71 ... The space around the exhaust pipe,
72. Third exhaust port,
80 ... control device,
81 ... circuit board,
82 ... cooling fan,
83 ... Air intake,
92 ... Blower motor,
93 ... circulation duct,
95 ... pipe,
97 ... Damper motor,
103 ... ribs,
104 ... the opening of the exhaust chamber,
105-108 ... partition wall,
109 ... Aisle,
111 ... communication part.

Claims (6)

A body casing;
A steam generator disposed in the main casing and generating steam;
A heating chamber disposed in the main body casing and for heating an object to be heated by steam supplied from the steam generator;
A steam exhaust pipe for exhausting the steam from the heating chamber to the outside of the main body casing, and an air outside the heating chamber disposed near the steam exhaust pipe and mounted on the top plate of the main body casing. An exhaust device including an air exhaust passage for exhausting outside the main body casing,
The steam exhaust pipe and the air exhaust passage are arranged so as to exhaust steam from the heating chamber and air in the main casing together to the outside of the main casing. vessel. The heating cooker according to claim 1, wherein
A circuit board on which an electronic circuit is mounted;
A cooling fan that cools the circuit board by supplying air taken from an air intake provided in the main body casing to the circuit board;
The cooking device according to claim 1, wherein the air exhausted from the air exhaust passage is air after cooling the circuit board supplied by the cooling fan. The heating cooker according to claim 1, wherein
The steam exhaust pipe has a first exhaust port,
The cooking device according to claim 1, wherein the air exhaust passage has a second exhaust port disposed adjacent to the first exhaust port around the first exhaust port. The heating cooker according to claim 1, wherein
The steam exhaust pipe has an exhaust port,
A cooking device according to claim 1, wherein the steam exhaust pipe and the air exhaust passage are provided with a communication portion for communicating a tip portion of the air exhaust passage with the steam exhaust pipe. The heating cooker according to claim 1, wherein
The cooking device according to claim 1, wherein the air exhaust passage surrounds at least a part of the periphery of the steam exhaust pipe and is disposed adjacent to the steam exhaust pipe. The heating cooker according to claim 1, wherein
The said cooking apparatus is arrange | positioned in the rear side in the said main body casing, The heating cooker characterized by the above-mentioned.

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