JP4515174B2 - Steam cooker - Google Patents

Description

  The present invention relates to a steam cooker.

  2. Description of the Related Art Conventionally, there is a heating cooker that is disposed below a gap between a door and a front frame of a heating chamber and includes a dew receiving portion formed by bending the tip upward (for example, Japanese Patent Laid-Open No. 6-213463). (See Patent Document 1)). This heating cooker receives the water droplets from the dew receiving part even if the steam from the heated food is condensed to form water droplets and drops from the gap between the door and the front frame of the heating chamber. The bottom of the door is prevented from getting dirty by flowing downward.

The present applicant has proposed a steam cooker using superheated steam with a good cooking finish, but in a steam cooker using steam, steam condenses inside the door, and a large amount of water droplets are generated. Therefore, even if the structure of the dew receiving part of the heating cooker is adopted, there is a problem that water overflows from the dew receiving part and stains the lower side thereof. Further, in the structure of the dew receiving part of the heating cooker, in order to receive water droplets falling from the lower surface of the door, the front side of the dew receiving part must be brought out to the front side of the door, so that the open door does not hit. In order to lower the front side of the dew receiving part, the concave part for storing the water in the dew receiving part becomes shallow, so that sufficient capacity cannot be obtained, and when the water is discarded by removing the dew receiving part, it overflows with a slight inclination There is a problem. In addition, this steam cooker is demonstrated in order to make this invention easy to understand, and is not a well-known technique and is not a prior art.
JP-A-6-213463

  Then, the objective of this invention is providing the steam cooker which can prevent the stain | pollution | contamination by the leakage of the dew condensation water which arises inside the store | warehouse | chamber interior of a door with simple structure.

  Another object of the present invention is to increase the capacity by making effective use of the limited storage space and deepening the concave portion of the dew receiving part, and when removing the dew receiving part and discarding water. The object is to provide a steam cooker that can prevent water overflow.

To achieve the above object, a steam cooker according to the present invention is provided with a main body casing, a steam generator disposed in the main body casing and generating steam, disposed in the main body casing, and supplied from the steam generator. A heating chamber for heating an object to be heated by steam, a door that is disposed on the front surface side of the main body casing, pivots about a lower end side, and opens and closes the opening of the heating chamber; A dew receiving portion that receives water droplets dripping from between the heating chamber side of the door and the front surface side of the main casing, and a water droplet that is provided on the lower side of the door and dripping from the heating chamber side of the door. With a rib leading to the body casing side,
The rib is provided at a position lower than the lower edge of the opening of the heating chamber below the door and in a position lower than the rotation center of the door when the door is closed. It is characterized by.

According to the steam cooker of the said structure, a to-be-heated material is heated by supplying a steam to a heating chamber from the steam generator arrange | positioned in the said main body casing. During this cooking process, steam is condensed on the inner surface side of the door (heating chamber side) and water droplets are generated.If the water flows down along the inner surface of the door due to vibration when the door is opened, Water droplets dripping from the heating chamber side of the door are guided to the main body casing side by the rib provided on the side. Then, the water droplets guided to the main body casing side by the ribs of the door fall between the door and the front side of the main body casing and are collected in the dew receiving part, so that steam condenses on the inner surface side of the door. Even if a large amount of water droplets are generated, it does not flow downward along the lower surface of the door and stain the lower side of the door. Therefore, it is possible to reliably prevent contamination due to leakage of condensed water generated inside the door, with a simple configuration, and to realize a sanitary steam cooker that maintains good aesthetics.
In addition, when the door is closed, a rib provided at a position lower than the lower edge of the opening of the heating chamber on the lower side of the door is used to guide water droplets dripping from the inner surface side of the door to the main body casing side. Makes it easier to pass water droplets to the front side of the main body casing below the lower edge of the opening of the chamber, and drops water drops that cross the front side of the main body casing along the front side of the main body casing to the dew receiving part. Can be collected. At this time, some of the water droplets flowing down from the tip of the rib may fall directly on the dew receiving part without passing over the front side of the main body casing.

  Further, in the steam cooker of one embodiment, the side wall on the front side of the dew receiving part is between the lowest point of the rotation locus of the corner part on the lower side and the front side of the door and the front side of the main body casing. The upper end of the side wall on the front side of the dew receiving part is higher than the lowest point of the rotation locus of the corner part.

  According to the steam cooker of the above embodiment, the side wall on the front side of the dew receiving part is located between the lowest point of the rotation locus of the corner part on the lower side of the door and the front side and the front side of the main body casing. By doing so, it becomes possible to make the upper end of the side wall on the front side higher than the lowest point of the outermost circumference of the rotation trajectory of the corner portion, so that even in the same storage space, the concave portion of the dew receiving portion is more than conventional. Can deepen. Therefore, the capacity of the dew receiving part can be increased by effectively using the limited storage space, and even when the dew receiving part is tilted when the dew receiving part is removed and water is discarded, it is difficult to overflow.

  After that, when the door is opened and substantially horizontal, it becomes a rib wall and spreads the water droplets remaining on the top surface of the door (door side of the heating chamber in the closed state) without falling to the dew receiving part. (Remaining water droplets can be removed by the user)

Further, steam cooker of one embodiment, in closed state of the door, the rib is provided on the heating chamber side of the door, the upper surface of the rib is gradually toward the front side of the body casing It is a taper surface which becomes low.

According to the steam cooker of the said embodiment, in the state which closed the said door, a rib is provided in the heating chamber side of a door , and makes the upper surface of a rib into the taper surface which becomes low gradually toward the front side of a main body casing. This makes it easier to guide water drops dripping from the inner surface side of the door to the main casing.

Further, steam cooker of one embodiment, the ribs, the water drops dripping from the inner side of the door, be delivered by surface tension on the front side of the lower side of the main body casing from the opening of the heating chamber It is characterized by.

  According to the steam cooker of the said embodiment, the water droplet dripped from the heating chamber side of the said door flows down on the upper surface of a rib, and is handed over to the front side of a main body casing by the surface tension from the front-end | tip. Thus, the delivered water droplets flow down along the front side of the main body casing. Therefore, water droplets can be reliably delivered from the tip of the rib to the front side of the main casing by surface tension.

  Moreover, the steam cooker of one Embodiment is characterized by the shortest distance of the rotation locus | trajectory of the front-end | tip of the said rib accompanying the opening and closing of the said door, and the front side of the said main body casing being 3 mm or less.

  According to the steam cooker of the above-described embodiment, the shortest distance between the rotation locus of the tip of the rib accompanying opening and closing of the door and the front side of the main body casing is 3 mm or less, whereby the front end of the rib and the front side of the main body casing When the minimum distance is reached, water droplets can be more reliably delivered from the tip of the rib to the front side of the main casing by surface tension.

Further, steam cooker of an embodiment, in closed state of the door, the lower surface of the rib, characterized in that it is substantially perpendicular to the inner surface of the door.

  According to the steam cooker of the above-described embodiment, when the door is closed, the lower surface of the rib is substantially perpendicular to the inner surface of the door, so that water drops dripping from the inner surface side of the door from the front end of the rib. When guiding to the casing side, it is possible to make it difficult for water droplets to go around to the lower surface side of the rib, and to prevent it from flowing down along the lower surface of the door.

  Moreover, the steam cooker of one Embodiment is characterized by the said rib being provided in the lower surface side of the said door.

  According to the steam cooker of the above embodiment, when the door is opened from the closed state, the rib provided on the lower surface side of the door with the rotation of the door is positioned between the door and the front side of the main casing. At this time, water droplets dripping from the inner surface side of the door can be guided to the main body casing side by the ribs.

  In the steam cooker of one embodiment, in the state where the door is closed, the surface on the main body casing side of the rib provided on the lower surface side of the door gradually separates from the main body casing downward. It is a taper surface.

  According to the steam cooker of the above embodiment, in a state where the door is closed, the surface of the rib on the main body casing side is a tapered surface that gradually separates from the main body casing toward the lower side, thereby closing the door. When the door is opened, the rib provided on the lower surface side of the door is positioned between the door and the front surface side of the main casing as the door rotates. The surface makes it easier to guide to the main body casing side.

  Moreover, the steam cooker of one Embodiment is characterized by the shortest distance of the rotation locus | trajectory of the front-end | tip of the said rib provided in the lower surface side of the said door, and the front side of the said main body casing being 3 mm or less.

  According to the steam cooker of the above-described embodiment, the shortest distance between the rotation locus of the tip of the rib accompanying opening and closing of the door and the front side of the main body casing is 3 mm or less, whereby the front end of the rib and the front side of the main body casing When the minimum distance is reached, water droplets can be reliably delivered from the tip of the rib to the front side of the main casing by surface tension.

Further, steam cooker of an embodiment, when the door is dripping water droplets from the inner side of the door opening, the ribs provided on the lower surface side of at least the door tip of the dew receiving portion It exists in the front side of the said main body casing rather than the side wall of a front side.

  According to the steam cooker of the said embodiment, when the said door opens and a water drop dripping from the inner surface side of a door, at least the front-end | tip of a rib exists in the front side of a main body casing rather than the side wall of the front side of a dew receiving part. Therefore, the water drop falling directly from the tip of the rib can be reliably received by the dew receiving portion.

  Moreover, the steam cooker of one Embodiment is characterized by the surface of the front side of the said rib provided in the lower surface side of the said door being a substantially right angle with respect to a horizontal surface in the state which closed the said door.

  According to the steam cooker of the above embodiment, in the state where the door is closed, the surface on the front side of the rib is provided at a substantially right angle with respect to the horizontal plane, thereby providing the lower surface side of the door with the rotation of the door. The rib is positioned between the door and the front side of the main casing, and when water droplets that drip from the inner surface of the door are guided from the tip of the rib to the main casing, the water droplets are less likely to flow around the lower surface of the rib. Can be prevented from flowing down along the inside.

  Moreover, the steam cooker of one Embodiment is characterized by the said dew receiving part being detachably attached to the said main body casing.

  According to the steam cooker of the above embodiment, since the dew receiving part is detachably attached to the main body casing, the dew receiving part is removed from the main body casing, and the water accumulated in the dew receiving part can be easily discarded. Can do.

  As is clear from the above, according to the steam cooker of the present invention, it is possible to reliably prevent contamination due to leakage of dew condensation water generated on the inner side of the door with a simple configuration.

  In addition, according to the steam cooker of one embodiment, the concave portion of the dew receiving part can be deepened, and a larger capacity can be obtained by effectively using the limited storage space. Even when the dew receiving part is tilted slightly, it can be prevented from overflowing.

  Hereinafter, the steam cooker of this invention is demonstrated in detail by embodiment of illustration.

(First embodiment)
FIG. 1 is an external perspective view of the steam cooker 1 according to the first embodiment of the present invention, and a door 12 is provided on the front surface of a rectangular parallelepiped main body casing 10 so as to rotate about the lower end side. An operation panel 11 is provided on the right side of the door 12, a handle 13 is provided on the top of the door 12, and a heat-resistant glass window 14 is provided in the approximate center of the door 12.

  FIG. 2 is an external perspective view of the steam cooker 1 with the door 12 opened, and 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, bottom and top surfaces 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 arranged 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 placed on the bottom surface of the heating chamber 20, and a stainless steel wire rack 24 for placing an object to be heated is placed on the receiving tray 21. Furthermore, a substantially rectangular side-surface steam outlet 22 (only one of which is shown in FIG. 2) is provided on both side surfaces of the heating chamber 20. In addition, in the state which opened the door 12, the upper surface side of the door 12 becomes substantially horizontal, and when it takes out to-be-heated material, it can once put on the upper surface of the door 12.

  On the left side of the heating chamber 20 of the main body casing 10, a water tank storage unit 100 for storing the water tank 30 is provided. On the other hand, on the right side of the heating chamber 20 of the main body casing 10, a protrusion 101 having a substantially rectangular region protruding on the front surface is provided, and a plurality of air outlets 102 are provided on the heating chamber 20 side and above the protrusion 101.

  Further, in the state where the door 12 is closed, a recess 103 into which the projection 101 of the main body casing 10 is fitted is provided in the door 12, and a plurality of examples of air inlets are provided on the side wall of the recess 103 on the window 14 side. The cooling slit 104 is provided at a position facing the plurality of air blowing ports 102 of the protrusion 101 of the main body casing 10. The window 14 is composed of two heat-resistant glasses sandwiching a space, and a packing 105 is attached to the side of the door 12 facing the main body casing 10 and the outer edge of the window 14.

  FIG. 3 (a) is a schematic view showing a cross-sectional view of the steam cooker 1 with the door closed as seen from the side. As shown in FIG. 3 (a), the packing 105 includes lip portions 105b on both sides. , 105c having a concave portion 105a sandwiched between 105c, and the opening of the concave portion 105a of the packing 105 having a V-shaped cross section faces the opening side of the heating chamber 20 with the door 12 closed. . In addition, the cross-sectional shape of the packing may be a U-shaped cross-section, or has a concave portion facing the heating chamber 20 side, and when the door is closed, the lip portions on both sides of the concave portion are narrowed to seal between the door and the main casing. Anything to do. The packing 105 is formed using an elastic material such as a heat-resistant synthetic resin.

  Further, in the region facing the lower edge of the opening of the heating chamber 20 with the door 12 closed, the tip of the lip 105b of the packing 105 having a V-shaped cross section is more than the lower edge of the opening of the heating chamber 20. High position. Further, in the region facing the upper edge of the opening of the heating chamber 20 with the door 12 closed, the tip of the lip 105b of the packing 105 having a V-shaped cross section is more than the lower edge of the opening of the heating chamber 20. It is in a low position.

  FIG. 4 is a schematic view showing a cross section of the steam cooker of the comparative example as seen from the side, FIG. 4 (a) shows a state in which the door 12 is closed, and FIG. 4 (b) shows a state in which the door 12 is opened. Is shown. The steam cooker of this comparative example is for comparison with the steam cooker 1 of the embodiment of the present invention, and is not the present invention.

  4 (a) and 4 (b), 120 is a dew receiving portion that receives water droplets dripping from between the inner surface side of the door 12 and the front surface side of the main body casing 10, 121 is fixed at one end to the main body casing 10, An arm part 122 whose other end protrudes so as to sandwich the lower side and both sides of the door 12, 122 is provided on the lower side and both sides of the door 12, and is a rotary shaft rotatably supported on the other end of the arm part 121. is there. The side wall 120 a on the front side of the dew receiving unit 120 is near the front side of the door 12 in order to receive water droplets dripping from the lower surface side of the door 12. Further, the dew receiving part 120 is detachably attached to the lower side of the door 12 and the main body casing 10 and is detached from an attaching part (not shown) of the main body casing 10 by pulling the dew receiving part 120 forward. . On the other hand, at the time of mounting, the dew receiving part 120 is attached to an attachment part (not shown) of the main body casing 10 by pushing the dew receiving part 120 downward to the main body casing 10.

  Therefore, in the steam cooker of the comparative example shown in FIG. 4A, when the door 12 hits the side wall 120 a on the front side of the dew receiving portion 120 when the door 12 is opened as shown in FIG. In order to avoid this, the upper end of the side wall 120a is set lower than the front side (the lower side in FIG. 4 (b)) of the door 12 that is open and substantially horizontal. Further, when the door 12 is opened from the closed state by turning in the direction of the arrow R1, if the corner 12a on the lower side and the front side of the door 12 hits the upper end of the side wall 120a on the front side of the dew receiving unit 120. I am trying not to.

  FIG. 5 is a schematic cross-sectional view of the main part when the rib 130 is provided on the heating chamber 20 side of the door 12 of the steam cooker 1 according to the first embodiment of the present invention. ) Shows a state in which the door 12 is closed, FIG. 5 (b) shows a state in which the door 12 is slightly opened, FIG. 5 (c) shows a state in which the door 12 is fully opened and substantially horizontal, and FIG. FIG. 5d shows an enlarged view around the rib 130 in FIG.

  As shown in FIG. 5 (a), in the dew receiving part 220 that receives water droplets dripping from between the heating chamber 20 side of the door 12 and the front side of the main body casing 10, the front side wall 220 a The upper end of the side wall 220a on the front side of the dew receiving part 220 is located between the lowest point P on the outermost circumference of the rotation locus of the corner part 12a on the lower side and the front side and the front side of the main body casing 10. It is in a position higher than the lowest point P of the rotation locus of the corner portion 12a on the lower side and the front side. When the door 12 is opened from the closed state in the direction of the arrow R1, the corner portion 12a on the lower side of the door 12 and on the front side does not hit the upper end of the side wall 120a on the front side of the dew receiving portion 120.

  Further, a rib 130 as an example of guiding means for guiding condensed water is provided on the heating chamber 20 side of the door 12 and below the lower edge of the opening of the heating chamber 20. The rib 130 has a taper surface 130a and a surface 130b on the upper side and the lower side, respectively, with the door 12 closed, and the upper taper surface 130a gradually decreases toward the front side of the main body casing 10, The plane 130b is substantially perpendicular to the surface of the door 12 on the heating chamber 20 side. Although the tapered surface 130a of the rib 130 is a flat surface, it may be a curved surface. Further, in the state where the door 12 is closed, the upper angle among the angles formed by the lower flat surface 130b of the rib 130 and the heating chamber 20 side of the door 12 may be an obtuse angle.

  When the door 12 rotates about the rotation shaft 122 in the direction of the arrow R1 to open the opening of the heating chamber 20, as shown in FIG. 5 (b), it is generated during cooking and enters the recess 105a of the packing 105. The accumulated water overflows and flows down along the back surface of the door 12, and the flowed-down water is guided to the main body casing 10 side by the tapered surface 130 a of the rib 130. Therefore, it does not fall into the dew receiving part 220 from the tip of the rib 130 and flows down to the outside of the dew receiving part 220 along the lower surface of the door 12 as shown by the dotted line in FIG.

  Further, as shown in FIG. 5B, the shortest distance D1 between the rotation locus of the tip of the rib 130 and the front side of the main body casing 10 is set to 3 mm or less. The shortest distance D1 between the rotation locus of the tip of the rib 130 and the front side of the main casing 10 is preferably 2 mm or less. As a result, when the tip of the rib 130 and the front surface side of the main body casing 10 become the shortest distance, water droplets are reliably delivered from the front end of the rib 130 to the front surface side of the main body casing 10 by surface tension.

  Then, as shown in FIG. 5 (c), when the door 12 is fully opened and becomes almost horizontal, it accumulates from the recess 105a of the packing 105 in the upper surface of the door 12 and the area surrounded by the packing 105, and the packing 105 The water overflowing from the enclosed area also remains in the area between the packing 105 and the rib 130 on the upper surface of the door 12.

  FIG. 7 is a schematic configuration diagram showing a basic configuration of the steam cooker 1. As shown in FIG. 7, the steam cooker 1 includes a heating chamber 20, a water tank 30 for storing water for steam, a steam generator 40 for evaporating water supplied from the water tank 30, and the steam. A steam temperature raising device 50 for heating steam from the generator 40 and a control device 80 for controlling the steam generator 40, the steam temperature raising device 50, and the like are provided.

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

  In addition, a connecting portion 30 a provided on the lower side of the water tank 30 is connected to a funnel-shaped receiving port 31 a provided at one end of the first water supply pipe 31. The suction side of the pump 35 is connected to the other end of the second water supply pipe 32 that branches from the first water supply pipe 31 and extends upward, and one end of the third water supply pipe 33 is connected to the discharge side of the pump 35. . Further, a water tank water level sensor 36 is disposed at the upper end of a water level sensor pipe 38 that branches off from the first water supply pipe 31 and extends upward. Furthermore, the upper end of the air release pipe 37 branched from the first water supply pipe 31 and extending upward is connected to an exhaust duct 65 described later.

  The third water supply pipe 33 has an L shape that is bent substantially horizontally from a vertically arranged portion, and an auxiliary tank 39 is connected to the other end of the third water supply pipe 33. One end of the fourth water supply pipe 34 is connected to the lower end of the auxiliary tank 39, and the other end of the fourth water supply pipe 34 is connected to the lower end of the steam generator 40. In addition, one end of the drain valve 70 is connected to the lower end of the steam generator 40 to which the fourth water supply pipe 34 is connected. One end of the drain pipe 71 is connected to the other end of the drain valve 70, and the internal drain port 29 is connected to the other end of the drain pipe 71. The drain pipe 71 is connected to the drain outlet 29 in a state protruding 2 mm or more into the heating chamber 20. Further, the upper end of the drain pipe 72 is connected to the lowermost part of the fan casing 26, and the lower end of the drain pipe 72 is connected to the drain pipe 71. Note that the upper portion of the auxiliary tank 39 communicates with the atmosphere via the air release pipe 37 and the exhaust duct 65.

  When the water tank 30 is connected, the water in the water tank 30 rises into the air release pipe 37 until the water level becomes the same as that of the water tank 30. Since the water level sensor pipe 38 connected to the water tank water level sensor 36 is sealed at the tip, the water level does not rise, but the pressure in the sealed space of the water level sensor pipe 38 depends on the water level of the water tank 30. Rise from atmospheric pressure. By detecting this pressure change by a pressure detection element (not shown) in the water tank water level sensor 36, the water level in the water tank 30 is detected. In the measurement of the water level when the pump 35 is stationary, the pipe 37 for opening to the atmosphere is unnecessary, but in order to prevent the suction pressure of the pump 35 from acting directly on the pressure detection element and reducing the accuracy of water level detection of the water tank 30. An open air pipe 37 having an open end is used.

  The steam generator 40 includes a pot 41 having the lower end connected to the other end of the fourth water supply pipe 34, a heater portion 42 disposed in the vicinity of the bottom surface of the pot 41, and a heater in the pot 41. It has a water level sensor 43 disposed in the vicinity of the upper side of the portion 42 and a steam suction ejector 44 attached to the upper side of the pot 41. And the fan casing 26 is arrange | positioned on the outer side of the suction inlet 25 provided in the side surface upper part of the heating chamber 20. As shown in FIG. Steam in the heating chamber 20 is sucked from the suction port 25 by the blower fan 28 disposed in the fan casing 26. The sucked steam is sent to the inlet side of the steam suction ejector 44 of the steam generator 40 through the first pipe 61. The first pipe 61 has one end connected to the fan casing 26 and the other end connected to the inlet side of the inner nozzle 45 of the vapor suction ejector 44.

  The vapor suction ejector 44 includes an outer nozzle 46 that wraps the outside of the inner nozzle 45, and the discharge side of the inner nozzle 45 communicates with the internal space of the pot 41. The discharge side of the outer nozzle 46 of the vapor suction ejector 44 is connected to one end of the second pipe 63, and the vapor temperature raising device 50 is connected to the other end of the second pipe 63.

  The fan casing 26, the first pipe 61, the steam suction ejector 44, the second pipe 63, and the steam temperature raising device 50 form a circulation path 60. One end of the 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 the other end of the discharge passage 64 is connected to one end of the exhaust duct 65. An exhaust port 66 is provided at the other end of the exhaust duct 65. A radiator 69 is externally fitted on the exhaust duct 65 side of the discharge passage 64. A connection portion with the first pipe 61 that forms the circulation path 60 is connected to the exhaust duct 65 via the exhaust passage 67. A damper 68 that opens and closes the exhaust passage 67 is arranged on the connection side of the exhaust passage 67 with the first pipe 61.

  In addition, the steam temperature raising device 50 includes a dish-shaped case 51 disposed on the ceiling side and substantially in the center of the heating chamber 20 with the opening facing down, and a first steam heating disposed in the dish-shaped case 51. A heater 52 and a second steam heater 53 disposed in the dish-shaped case 51 are 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 are formed in the ceiling panel 54. The ceiling panel 54 is finished in a dark color on the upper and lower surfaces 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-colored ceramic molded product.

  Further, the steam temperature raising device 50 is connected to one end of each of the steam supply passages 23 (only one is shown in FIG. 7) extending to the left and right sides of the heating chamber 20. The other end of the steam supply passage 23 extends downward along both side surfaces of the heating chamber 20 and is connected to side surface steam outlets 22 provided on both side surfaces and the lower side of the heating chamber 20.

  The control device 80 includes a blower fan 28, a first steam heater 52, a second steam heater 53, a damper 68, a drain valve 70, a steam generator heater 42, and an operation panel 11 (see FIG. 1). A water tank water level sensor 36, a water level sensor 43, a temperature sensor (not shown) for detecting the temperature in the heating chamber 20 (shown in FIG. 7), and the humidity in the heating chamber 20 are detected. A humidity sensor (not shown) and a pump 35 are connected.

  The control device 80 includes a microcomputer, an input / output circuit, and the like, and based on detection signals from the water tank water level sensor 36, the water level sensor 43, the temperature sensor, and the humidity sensor, the blower fan 28, the first steam heater 52, and the like. The second steam heater 53, the damper 68, the drain valve 70, the steam generating heater 42, the operation panel 11 and the pump 35 are controlled according to a predetermined program.

  In the steam cooker 1 configured as described above, a power switch (not shown) in the operation panel 11 is pressed to turn on the power, and the operation of the operation panel 11 starts the cooking operation. Then, the control device 80 first starts the operation of the pump 35 with the drain valve 70 closed and the exhaust passage 67 closed by the damper 68. Water is supplied into the pot 41 of the steam generator 40 from the water tank 30 through the first to fourth water supply pipes 31 to 34 by the pump 35. And if the water level sensor 43 detects that the water level in the said pot 41 reached the predetermined water level, the pump 35 will be stopped and water supply will be stopped.

  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.

  Next, simultaneously with the energization of the steam generating heater 42 or when the temperature of the water in the pot 41 reaches a predetermined temperature, the blower fan 28 is turned on and the first steam heating heater 52 of the steam heating device 50 is energized. To do. Then, the blower fan 28 sucks air (including steam) in the heating chamber 20 from the suction port 25 and sends out air (including steam) to the circulation path 60. Since a centrifugal fan is used as the blower fan 28, a higher pressure can be generated compared to the propeller fan. 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 joins the circulating airflow passing through the circulation path 60 at the steam suction ejector 44. The steam discharged from the steam suction ejector 44 flows into the steam temperature raising device 50 through the second pipe 63 at a high speed.

  And the steam which flowed into the said steam temperature rising apparatus 50 is heated by the 1st steam heating heater 52, and turns into a superheated steam of about 300 degreeC (it changes with cooking contents). A part of the 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 both the left and right sides of the steam heating device 50.

  Thereby, the superheated steam ejected from the ceiling side of the heating chamber 20 is vigorously supplied toward the heated object 90 side in the center, and the superheated steam ejected from the left and right side surfaces of the heating chamber 20 is heated. It is supplied while being lifted so as to wrap the article 90 to be heated from below the article 90. As a result, convection occurs in the heating chamber 20 in such a manner that it is blown down at the center and rises outside the center. Then, the convection steam is sequentially sucked into the suction port 25 and repeats circulation such that it returns to the heating chamber 20 through the circulation path 60 again.

  By forming convection of superheated steam in the heating chamber 20 in this way, the superheated steam from the steam heating device 50 is sent to the ceiling steam outlet while maintaining the temperature and humidity distribution in the heating chamber 20 uniform. 55 and the side air outlet 22, and can efficiently collide with the heated object 90 placed on the rack 24. Then, the object to be heated 90 is heated by the collision of superheated steam. At this time, the superheated steam in contact with 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 uniformly and quickly applied to the entire surface of the article 90 to be heated. Therefore, it is possible to realize cooking with no unevenness and good finish.

  Further, in the above cooking operation, when time elapses, the amount of steam in the heating chamber 20 increases, and the surplus amount of steam passes from the discharge port 27 through the discharge passage 64 and the exhaust duct 65. And discharged from the exhaust port 66 to the outside. At this time, the steam 69 passing through the discharge passage 64 is cooled and condensed by the radiator 69 provided in the discharge passage 64, thereby preventing the steam from being discharged to the outside as it is. The water condensed in the discharge passage 64 by the radiator 69 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 the 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. Thereby, when the user who knows the end of cooking opens the door 12, the control device 80 detects that the door 12 has been opened by a sensor (not shown), and instantly opens the damper 68 of the exhaust passage 67. . Thereby, the first pipe 61 of the circulation path 60 communicates with the exhaust duct 65 through 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 first pipe 61, the exhaust passage 67 and The gas is discharged from the exhaust port 66 through the exhaust duct 65. This damper operation is the same 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.

  According to the steam cooker 1 having the above configuration, the object to be heated 90 is heated by supplying steam to the heating chamber 20 from the steam generating device 40 disposed in the main body casing 10. During this cooking, even if steam is condensed on the inner surface side (heating chamber 20 side) of the door 12 and water droplets are generated, and water flows down along the inner wall of the door 12, the cross section V remains in the state where the door 12 is closed. Since the opening of the concave portion 105 a of the letter-shaped packing 105 faces the opening side of the heating chamber 20, water accumulates in the concave portion 105 a of the packing 105 in a region facing the lower edge of the opening portion of the heating chamber 20. Therefore, the dew condensation water generated on the inner side of the door 12 does not flow down from the gap between the door 12 and the main body casing 10, and contamination due to the dew condensation water leakage can be reliably prevented with a simple configuration. During cooking, the inside of the heating chamber 20 is pressurized to some extent, and the opening of the recess 105a of the packing 105 having a V-shaped cross section faces the opening side of the heating chamber 20 with the door 12 closed. As a result, the sealing performance is improved by the positive pressure applied to the recess 105 a of the packing 105.

  Further, as shown in FIGS. 3A and 3B, in the region facing the lower edge of the opening of the heating chamber 20 with the door 12 closed, the lip portion 105b of the packing 105 having a V-shaped cross section. Is at a position higher than the lower edge of the opening of the heating chamber 20. Therefore, during cooking, as shown in FIG. 3 (b), steam is condensed on the inner surface side of the door 12 to generate water droplets, and a large amount of water flows down along the inner wall of the door 12, so Even if it overflows as shown in water 110 from the recess 105a after it has accumulated in 105a, it will pass over the tip of the lip 105b of the packing 105 and return to the heating chamber 20 side, so that contamination due to leakage of condensed water is reliably prevented. can do.

  Further, since the door 12 rotates around the lower end side to open and close the heating chamber, the door 12 can be opened from the recess 105a of the packing 105 even when the door 12 is opened and substantially horizontal after cooking. The dew condensation water does not leak from between the door 12 and the main body casing 10 only by flowing into the area surrounded by the upper surface of 12 and the packing 105, and dirt can be prevented more reliably. The condensed water that has flowed out into the area surrounded by the upper surface of the door 12 and the packing 105 is wiped off by the user.

  Moreover, according to the steam cooker 1 of the said 1st Embodiment, as shown in FIG. 5, during heat cooking, a vapor | steam condenses on the inner surface side (heating chamber 20 side) of the door 12, and a water droplet generate | occur | produces, Even when water flows down along the inner surface of the door 12 due to vibration or the like when the door 12 is opened, the main body casing 10 side causes water droplets dripped from the inner surface side of the door 12 by the ribs 130 provided on the lower side of the door 12. Lead to. By doing so, water droplets guided to the main body casing 10 side by the ribs 130 of the door 12 fall between the door 12 and the front surface side of the main body casing 10 and are collected in the dew receiving portion 220. Even if steam condenses on the inner surface side of the water and a large amount of water droplets are generated, it does not flow downward and stain the lower side of the door 12. Therefore, it is possible to reliably prevent contamination due to leakage of dew condensation water generated on the inner side of the door 12 with a simple configuration, and it is possible to realize a sanitary steam cooker that maintains good aesthetics.

  Further, the side wall 220a on the front side of the dew receiving part 220 is positioned between the lowermost point of the rotation locus of the corner 12a on the lower side of the door 12 and the front side and the front side of the main body casing 10, The upper end of the front side wall 220a can be made higher than the lowermost point of the outermost circumference of the rotation locus of the corner portion 12a, so that the concave portion of the dew receiving portion 220 can be formed more than ever in the same storage space. I can do it deeply. Therefore, the capacity of the dew receiving part 220 can be increased by effectively utilizing the limited storage space, and even when the dew receiving part 220 is tilted when the dew receiving part 220 is removed and the water is discarded, it is difficult to overflow.

  Further, as shown in FIG. 5, the inner surface of the door 12 is provided by a rib 130 provided at a position lower than the lower surface of the opening of the heating chamber 20 on the inner surface of the main casing 10 of the door 12 in the closed state. When water droplets dripping from the side are guided to the main body casing 10 side, the water droplets can be easily passed to the front side of the main body casing 10 below the lower edge of the opening of the heating chamber 20 and crossed to the front side of the main body casing 10. Water droplets can be dropped along the front side of the main body casing 10 and collected in the dew receiving unit 220. At this time, the water droplets flowing down from the tip of the rib 130 may fall directly on the dew receiving unit 220 without passing over the front side of the main body casing 10. In the state where the door 12 is opened and substantially horizontal, the rib 130 becomes a wall, so that the top surface of the door 12 does not fall to the dew receiving part 220 (in the closed state, the heating chamber 20 side of the door 12). ) The remaining water drops can be prevented from spreading.

  In addition, when the door 12 is closed, the upper surface of the rib 130 is a tapered surface 130a that gradually decreases toward the front surface side of the main body casing 10, so that water drops dripping from the inner surface side of the door 12 can be removed. Make it easier to guide to the side.

  Further, in FIG. 5, the water droplets dripping from the inner surface side of the door 12 flow down the upper surface of the rib 130, and the water droplets delivered from the front end to the front surface side of the main body casing 10 by the surface tension are along the front surface side of the main body casing 10. Therefore, water droplets can be reliably delivered from the tip of the rib 130 to the front side of the main casing 10 by surface tension.

  Further, by setting the shortest distance D1 between the rotation trajectory of the tip of the rib 130 and the front side of the main body casing 10 accompanying opening / closing of the door 12 to 3 mm or less, the front end of the rib 130 and the front side of the main body casing 10 are shortest. When the distance is reached, water droplets can be more reliably delivered from the tip of the rib 130 to the front side of the main casing 10 by surface tension.

  Further, when the door 12 is closed, the lower surface of the rib 130 is a flat surface 130b that is substantially perpendicular to the inner surface of the door 12, so that water droplets dripping from the inner surface side of the door 12 from the tip of the rib 130 to the main body casing. When guided to the 10 side, water droplets are less likely to flow around the lower surface side of the rib 130, and can be prevented from flowing down along the inside of the door 12. Further, when the members of the door 12 are integrally formed, the rib 130 whose plane 130b is substantially perpendicular to the surface of the door 12 on the heating chamber 20 side can be easily manufactured.

  Further, since the dew receiving part 220 is detachably attached to the main body casing 10, the water collected in the dew receiving part 220 can be easily discarded by removing the dew receiving part 220 from the main body casing 10.

(Second embodiment)
FIG. 6 is a schematic cross-sectional view of the main part when the rib 140 is provided on the lower surface side of the door 12 of the steam cooker 1 according to the second embodiment of the present invention as viewed from the side. FIG. 6 (b) shows a state in which the door 12 is slightly opened, FIG. 6 (c) shows a state in which the door 12 is fully opened and substantially horizontal, and FIG. FIG. 6 shows an enlarged view around the rib 140 of FIG. The steam cooker according to the second embodiment has the same configuration as that of the steam cooker according to the first embodiment shown in FIGS. 1 to 3 and 5 except for ribs, and uses FIGS. 1 to 3. The description is omitted.

  As shown in FIG. 6A, a rib 140 as an example of guiding means for guiding condensed water is provided on the lower surface side of the door 12 and on the heating chamber 20 side. The rib 140 has a tapered surface 140a and a flat surface 140b on the body casing 10 side and the front surface side, respectively, with the door 12 closed, and the tapered surface 140a on the body casing 10 side gradually moves downward from the body casing 10. The front side plane 140b is substantially perpendicular to the lower surface of the door 12 (when the lower surface of the door 12 is not horizontal, it is substantially perpendicular to the horizontal plane). Although the tapered surface 140a of the rib 140 is a flat surface, it may be a curved surface. Moreover, in the state which closed the said door 12, you may make the angle by the side of the main body casing 10 among the angles which the plane 140b of the rib 140 and the lower surface of the door 12 make (when the lower surface of the door 12 is not horizontal) , Obtuse angle to the horizontal plane).

  When the door 12 rotates about the rotation shaft 122 in the direction of the arrow R1 to open the opening of the heating chamber 20, as shown in FIG. 6 (b), it occurs during cooking and enters the recess 105a of the packing 105. The accumulated water overflows and flows downward along the back surface of the door 12, and the flowed-down water is guided to the main body casing 10 side by the tapered surface 140 a of the rib 140. Therefore, it does not drop into the dew receiving part 220 from the tip of the rib 140 and flow down to the outside of the dew receiving part 220 along the lower surface of the door 12 as shown by the dotted line in FIG.

  Further, as shown in FIG. 6B, the shortest distance D2 between the rotation locus of the tip of the rib 140 and the front surface side of the main body casing 10 is set to 3 mm or less. The shortest distance D2 between the rotation locus of the tip of the rib 140 and the front surface side of the main body casing 10 is preferably 2 mm or less. As a result, when the tip end of the rib 140 and the front side of the main body casing 10 become the shortest distance, water droplets are reliably delivered from the tip end of the rib 140 to the front side of the main body casing 10 by surface tension.

  Then, as shown in FIG. 6C, when the door 12 is fully opened and becomes almost horizontal, it accumulates in the region surrounded by the packing 105 from the recess 105a of the packing 105.

  According to the steam cooker 1 of the second embodiment, as shown in FIG. 6, during cooking, steam is condensed on the inner surface side (heating chamber 20 side) of the door 12 to generate water droplets, and the door 12 Even if water flows down along the inner surface of the door 12 due to vibration or the like when the door is opened, the water droplets dripping from the inner surface side of the door 12 are guided to the main body casing 10 side by the rib 140 provided on the lower side of the door 12. . By doing so, the water droplets guided to the main body casing 10 side by the rib 140 of the door 12 fall between the door 12 and the front side of the main body casing 10 and are collected in the dew receiving portion 220. Even if steam condenses on the inner surface side of the water and a large amount of water droplets are generated, it does not flow downward and stain the lower side of the door 12. Therefore, it is possible to reliably prevent contamination due to leakage of dew condensation water generated on the inner side of the door 12 with a simple configuration, and it is possible to realize a sanitary steam cooker that maintains good aesthetics.

  Further, the side wall 220a on the front side of the dew receiving part 220 is positioned between the lowermost point of the rotation locus of the corner 12a on the lower side of the door 12 and the front side and the front side of the main body casing 10, The upper end of the front side wall 220a can be made higher than the lowermost point of the outermost circumference of the rotation locus of the corner portion 12a, so that the concave portion of the dew receiving portion 220 can be formed more than ever in the same storage space. I can do it deeply. Therefore, the capacity of the dew receiving part 220 can be increased by effectively utilizing the limited storage space, and even when the dew receiving part 220 is tilted when the dew receiving part 220 is removed and the water is discarded, it is difficult to overflow.

  As shown in FIG. 6, when the door 12 is opened from the closed state, the ribs 140 provided on the lower surface side of the door 12 as the door 12 rotates are arranged on the front surface side of the door 12 and the main body casing 10. At this time, water droplets dripping from the inner surface side of the door 12 can be guided to the main body casing 10 side by the rib 140.

  When the door 12 is closed, the surface of the rib 140 on the main body casing 10 side is gradually tapered downward from the main body casing 10 so that the door 12 is opened from the closed state. As the door 12 rotates, a rib 140 provided on the lower surface side of the door 12 is positioned between the door 12 and the front surface side of the main casing 10. The tapered surface of the rib 140 makes it easy to guide to the main body casing 10 side.

  Further, by setting the shortest distance D2 between the rotation trajectory of the front end of the rib 140 and the front side of the main body casing 10 accompanying opening / closing of the door 12 to 3 mm or less, the front end of the rib 140 and the front side of the main body casing 10 are shortest. When the distance is reached, water droplets can be reliably delivered from the tip of the rib 140 to the front side of the main casing 10 by surface tension.

  Further, in FIG. 6, when the door 12 is opened and water droplets are dripped from the inner surface side of the door 12, at least the tip of the rib 140 is located on the front side of the main body casing 10 relative to the side wall 220 a on the front side of the dew receiving part 220. Therefore, the water drop that falls directly from the tip of the rib 140 can be reliably received by the dew receiving portion 220.

  In addition, when the door 12 is closed, the front surface of the rib 140 is a flat surface 140b that is substantially perpendicular to the horizontal surface, so that the door 12 is provided on the lower surface side of the door 12 as the door 12 rotates. When the rib 140 is located between the door 12 and the front surface side of the main body casing 10 and a water droplet dripping from the inner surface side of the door 12 is guided from the tip of the rib 140 to the main body casing 10 side, the water droplet is applied to the flat 140b side of the rib 140. Can be prevented from flowing around and can be prevented from flowing along the inside of the door 12.

  Further, since the dew receiving part 220 is detachably attached to the main body casing 10, the water collected in the dew receiving part 220 can be easily discarded by removing the dew receiving part 220 from the main body casing 10.

  In the first and second embodiments, the condensed water generated in the circulation path 60 is drained into the heating chamber 20 via the drainage path (drainage pipes 71 and 72). Condensed water generated in the circulation path in the tank may be drained through the drainage path.

  Moreover, in the said 1st, 2nd embodiment, although the steam generator 40 and the steam temperature raising apparatus 50 were provided and the steam cooker which cooks a to-be-heated material with superheated steam was demonstrated, the steam cooker of this invention May be any device provided with a steam generator for generating steam and a heating chamber for heating an object to be heated by the steam supplied from the steam generator.

FIG. 1 is an external perspective view of a steam cooker according to a first embodiment of the present invention. FIG. 2 is an external perspective view of the steam cooker with the door opened. FIG. 3 is a schematic cross-sectional view of the main part of the steam cooker with the door closed, seen from the side. FIG. 4 is a schematic view showing a cross section of a main part of a steam cooker of a comparative example for comparison with the steam cooker as seen from the side. FIG. 5 is a schematic view showing a cross section of a main part provided with a rib on the heating chamber side of the door of the steam cooker shown in FIG. FIG. 6: is a schematic diagram which shows the cross section which looked at the principal part which provided the rib in the lower surface side of the door of the steam cooker of 2nd Embodiment of this invention from the side. FIG. 7 is a schematic configuration diagram showing the configuration of the steam cooker.

DESCRIPTION OF SYMBOLS 1 ... Steam cooking apparatus 10 ... Main body casing 11 ... Operation panel 12 ... Door 13 ... Handle 14 ... Window 20 ... Heating chamber 21 ... Sauce tray 22 ... Side surface steam blower outlet 23 ... Steam supply passage 24 ... Rack 25 ... Suction port 26 ... Fan Casing 27 ... Discharge port 28 ... Blower fan 28a ... Fan part 28b ... Motor part 29 ... Drain port 30 ... Water tank 31 ... First water supply pipe 32 ... Second water supply pipe 33 ... 3rd water supply pipe 34 ... 4th water supply Pipe 35 ... Pump 36 ... Water tank water level sensor 39 ... Auxiliary tank 40 ... Steam generator 41 ... Pot 42 ... Heater unit 43 ... Water level sensor 44 ... Steam suction ejector 50 ... Steam temperature raising device 51 ... Dish-shaped case 52 ... First 1 steam heater 53 ... second steam heater 60 ... circulation path 61 ... first pipe 63 ... second pipe 64 ... discharge passage 65 Exhaust duct 66 ... Exhaust port 67 ... Exhaust passage 68 ... Damper 69 ... Radiator 70 ... Drain valve 71,72 ... Drain pipe 80 ... Control device 90 ... Heat 100 DESCRIPTION OF SYMBOLS 103 ... Recessed part 104 ... Cooling slit 105 ... Packing 105a ... Recessed part 105b, 105c ... Lip part 120,220 ... Dew receiving part 121 ... Arm part 122 ... Rotating shaft 130,140 ... Rib 130a, 140a ... Tapered surface 130b, 140b ... Plane

Claims (12)

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 door that is disposed on the front side of the main body casing and pivots about a lower end side to open and close the opening of the heating chamber;
A dew receiving portion for receiving water droplets dripping from between the heating chamber side of the door and the front side of the main body casing;
A rib that is provided on the lower side of the door and guides water droplets dripping from the heating chamber side of the door to the main body casing side;
The rib is provided at a position lower than the lower edge of the opening of the heating chamber below the door and in a position lower than the rotation center of the door when the door is closed. Steam cooker characterized by. The steam cooker according to claim 1, wherein
The side wall on the front side of the dew receiving part is located between the lowest point of the rotation locus of the corner part on the lower side and front side of the door and the front side of the main body casing, and the front side of the dew receiving part A steam cooker characterized in that the upper end of the side wall of the wall is higher than the lowest point of the rotation locus of the corner portion. The steam cooker according to claim 1 or 2,
When the door is closed, the rib is provided on the heating chamber side of the door, and the upper surface of the rib is a tapered surface that gradually decreases toward the front side of the main body casing. Steam cooker. In the steam cooker according to any one of claims 1 to 3,
The ribs, water droplets, steam cooker, wherein the hand over by the surface tension on the front side of the lower side of the main body casing from the opening of the heating chamber to be dropped from the inner surface side of the door. The steam cooker according to any one of claims 1 to 4,
A steam cooker characterized in that the shortest distance between the rotation locus of the tip of the rib accompanying opening and closing of the door and the front side of the main casing is 3 mm or less. The steam cooker according to any one of claims 1 to 5,
In closed state of the door, steam cooker, wherein the lower surface of the rib is substantially perpendicular to the inner surface of the door. The steam cooker according to claim 1 or 2,
The steam cooker, wherein the rib is provided on a lower surface side of the door. The steam cooker according to claim 7, wherein
In the state which closed the said door, the surface by the side of the said main body casing of the said rib is a taper surface which leaves | separates gradually from the said main body casing toward the downward direction, The steam cooker characterized by the above-mentioned. The steam cooker according to claim 7 or 8,
A steam cooker characterized in that the shortest distance between the rotation locus of the tip of the rib accompanying opening and closing of the door and the front side of the main casing is 3 mm or less. The steam cooker according to any one of claims 7 to 9,
When said door is dripping water droplets from the inner side of the door open, vapor of at least the rib tip is characterized in that the front side of the body casing than the side wall on the front side of the dew receiving portion Cooking device. The steam cooker according to any one of claims 7 to 10,
A steam cooker, wherein the front surface of the rib is substantially perpendicular to the lower surface of the door when the door is closed. The steam cooker according to any one of claims 1 to 11,
The steam cooker, wherein the dew receiving part is detachably attached to the main casing.

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