JP2019190772A - Heating cooker - Google Patents

Abstract

To provide a heating cooker where imaging accuracy does not deteriorate as an imaging part becomes dirty due to steam and scattering objects such as oil.SOLUTION: A heating cooker includes: a heating chamber in which an object to be heated is stored; a wall surface opening which is an opening provided on the wall of the heating chamber; a support frame provided on the outside of the heating chamber so as to cover the wall surface opening; a camera provided at the support frame so that an imaging surface is directed to the inside of the heating chamber via the wall surface opening; a shutter openable/closable so as to close or open the imaging surface of the camera, and provided between the wall surface opening and the camera; and a blower fan 160 for blowing an airflow toward the camera and the shutter. The support frame forms an air passage which takes in the airflow blown from the blower fan 160, guides it to the surface of the imaging surface of the camera, and exhausts it to the heating chamber direction via the wall surface opening.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a cooking device that heats food.

  2. Description of the Related Art Conventionally, there is a heating cooker having a photographing unit that photographs the inside of a warehouse. For example, Patent Document 1 discloses a cooking device having a photographing unit on the ceiling of a heating cabinet. The cooking device includes a shutter for protecting the photographing unit from scattered matter such as steam and oil generated from the object to be heated.

JP-A-9-180876

  However, in the configuration in which the photographing unit is protected by the shutter, when the shutter is opened, the photographing unit is contaminated by scattered matter such as steam and oil.

  In order to prevent this contamination, a configuration in which a glass layer or the like instead of a shutter is provided in front of the imaging unit to protect the imaging unit from contamination can be considered. However, such a method cannot prevent the glass layer from becoming dirty, so that the photographing accuracy in the storage is lowered under continuous use conditions.

  The heating cooker in the present disclosure includes a heating chamber in which an object to be heated is stored, a wall surface opening that is an opening provided in the wall of the heating chamber, and a support that is provided outside the heating chamber so as to cover the wall surface opening. The frame and the imaging surface can be opened and closed to shield or open the camera provided on the support frame and the camera so that the imaging surface faces the inside of the heating chamber through the wall surface opening. A shutter provided between the camera and a blower fan that blows airflow toward the camera and the shutter, and the support frame sucks in the airflow blown from the blower fan and moves to the surface of the camera imaging surface. After guiding, an air passage is formed for exhausting toward the heating chamber through the wall surface opening.

  In the present disclosure, the shutter is disposed in close contact with the photographing unit, and the air passage that flows to the inside of the warehouse through the shutter and the surface of the photographing unit is formed. Therefore, the photographing unit can be protected from dirt. Thereby, the imaging | photography precision of a heating cooker can be improved.

The perspective view of the heating cooker which concerns on 1 aspect of this indication The perspective view of the heating cooker in the state which opened the door which concerns on 1 aspect of this indication The front view of the heating cooker which removed the door concerning one mode of this indication The perspective view from the downward direction of the heating cooker which removed the door which concerns on 1 aspect of this indication The perspective view of the heating cooker which removed a part of housing | casing which concerns on 1 aspect of this indication The top view of the cooking-by-heating machine which removed a part of case concerning one mode of this indication Side surface sectional view concerning one mode of this indication Front sectional view according to one embodiment of the present disclosure Front sectional view according to one embodiment of the present disclosure Top view of major components according to one aspect of the present disclosure The perspective view of the main components concerning one mode of this indication An exploded perspective view of a photographing part concerning one mode of this indication The perspective view from the lower part of the photography part concerning one mode of this indication The perspective view from the lower part of the photography part concerning one mode of this indication Main parts according to one aspect of the present disclosure and peripheral side cross-sectional views Main parts and surrounding front sectional view according to one aspect of the present disclosure Explanatory drawing explaining the air path which concerns on 1 aspect of this indication Explanatory drawing explaining the air path which concerns on 1 aspect of this indication Explanatory drawing explaining the air path which concerns on 1 aspect of this indication

  According to one aspect of the present disclosure, the heating cooker includes a heating chamber in which an object to be heated is stored, a wall surface opening that is an opening provided on a wall of the heating chamber, and an outer side of the heating chamber so as to cover the wall surface opening. The support frame provided on the camera and the camera provided on the support frame can be opened and closed so that the shooting surface of the camera is shielded or opened so that the shooting surface faces the heating chamber through the wall opening. And a shutter provided between the wall surface opening and the camera, and a blower fan for blowing an airflow toward the camera and the shutter. The support frame forms an air passage that draws in the airflow blown from the blower fan, guides it to the surface of the camera imaging surface, and then exhausts it toward the heating chamber through the wall surface opening. Thereby, a camera and a shutter can be protected from scattered matters such as steam and oil generated from an object to be heated.

  The wall of the heating chamber may be the upper wall of the heating chamber. Thereby, the inside of a heating chamber can be image | photographed with high precision, protecting a camera and a shutter from scattered matters, such as a vapor | steam and oil which arise from a to-be-heated material.

  Further, the wall surface opening is provided on the front side of the center in the front-rear direction of the heating chamber, and the imaging surface is inclined with the imaging direction orthogonal to the imaging surface directed toward the rear side of the vertical direction of the heating chamber. As such, it may be provided on the support frame. Thereby, the influence of the external light which injects from the front side of a heating chamber is suppressed, and it can image | photograph with high precision.

  Further, the blower fan blows air from the left and right direction toward the support frame, and the support frame sucks the airflow blown from the blower fan and guides it to the surface of the imaging surface of the camera, and then through the wall surface opening, You may form the air path which exhausts toward the heating chamber used as the downward direction. Thereby, a camera and a ventilation fan can be arrange | positioned in a narrow space avoiding the approximate center vicinity in top view.

  Further, the shutter open position may be located downstream of the shielding position where the airflow in the air passage flows. Accordingly, the shutter can be stably opened even in a state where an airflow is generated.

  Further, the rotation axis of the shutter may be positioned above the camera. Thereby, the shutter can be rotated with low energy and high reliability.

  A motor for driving opening and closing of the shutter may be provided on the outer surface above the support frame. Thereby, it can suppress that the heat_generation | fever of a motor influences a camera. In addition, the motor can be arranged in a narrow space.

Further, the blower fan may blow air toward the outer surface above the support frame in addition to the air blow to the inside of the air passage. As a result, the camera, the camera substrate, and the motor can be cooled to improve the reliability of shooting.

  In addition, a wall surface recess that is concave toward the camera side from the periphery of the wall surface opening is provided, and the bottom of the wall surface recess on the camera side is parallel to the imaging surface of the camera. A concave bottom opening that is an opening smaller than the cross-sectional area of the surface may be provided. Thereby, while preventing the leakage of the microwave from a heating chamber, the inside of a heating chamber can be imaged at a wider angle.

(Embodiment 1)
Hereinafter, a heating cooker according to an aspect of the present disclosure will be described with reference to the drawings.

[overall structure]
1 to 19 illustrate a cooking device according to one embodiment of the present disclosure.

  As shown in FIGS. 1 to 3, the heating cooker 1 according to the embodiment of the present disclosure includes a housing 100, a heating chamber 110 disposed in the housing 100, and a front frame 101 that is a front surface of the housing 100. And a door 120 that covers the front opening 102 located in the openable and closable manner.

  In the description of the present disclosure, the front opening 102 side of the heating cooker 1 is a front side, and the back side on the opposite side is a rear side. When viewed from the front, that is, in a front view, the top surface side of the heating cooker 1 is the upper side, and the bottom surface side is the lower side. In the front view, the right direction of the cooking device 1 is the right side, and the left direction is the left side.

  Moreover, let the right direction be X direction in the front view of the heating cooker 1, and let the left direction be -X direction. The rear direction of the cooking device 1 is the Y direction, and the front direction is the -Y direction. The upward direction of the heating cooker 1 is the Z direction, and the downward direction is the -Z direction.

  The heating chamber 110 includes an upper wall 111a disposed at the top, a left wall 111b and a right wall 111c disposed on both left and right sides, a back wall 111d disposed at the rear, and a bottom wall 111e disposed at the bottom. And a space is formed in the interior.

  The door 120 is attached to the housing 100 so as to be openable and closable at the center of the vertical rotation on the left side of the front opening 102. The door 120 has a handle 121 at the right end of the front surface. When the handle 121 is pulled by the user, the door 120 is rotated and the front opening 102 is opened. Further, when the handle 121 is pushed by the user, the front opening 102 is closed. The door 120 is provided with a glass window 122 so that the user can check the situation inside the heating chamber 110.

  A horizontally long operation unit 130 is provided in the front upper portion of the housing 100 and above the door 120 in a front view. The operation unit 130 includes a plurality of operation switches 131 for the user to set cooking contents, and a plurality of display units 132 for displaying the operation status to the user. Each operation switch 131 is a button for selecting various information, a start button for starting cooking, and the like. The display unit 132 displays the operating state of the cooking device 1, the operation status of the operation switch 131, and the like. Each operation switch 131 and the display unit are controlled by the control unit 105. The control unit 105 may be configured by, for example, a CPU, a microcomputer, or hardware logic.

The heating cooker 1 supplies at least one of microwave (high frequency), radiant heat, hot air, and steam to heat the object to be heated placed on the bottom of the heating chamber 110. For this purpose, the heating cooker 1 circulates hot air in the heating chamber 110, a high-frequency generator having a magnetron 106 that generates microwaves, an upper heater unit (not shown) that heats an object to be heated with radiant heat, and the heating chamber 110. At least one of a convection heater unit (not shown) and a steam generation part (not shown) for generating steam in the heating chamber 110 is provided as a heating part which is a heating means. In the present disclosure, as described later, two magnetrons 106 are provided as heating units.

  As shown in FIG. 4, a wall surface opening 112 is provided as an opening on the upper wall 111 a of the heating chamber 110. A wall surface recess 113 formed in a concave shape is provided from the periphery of the wall surface opening 112 upward. As will be described later, the wall surface recess 113 is formed to have a concave shape that narrows obliquely upward from the peripheral edge of the wall surface opening 112 provided in the upper wall 111a of the heating chamber 110.

  On the concave bottom of the wall surface recess 113, that is, on the upper side, a concave bottom opening 114 that is an opening for photographing is provided. The side wall of the wall surface recess 113 has a tapered shape that narrows from the heating chamber 110 side toward the wall surface opening 112 side.

  Below the upper wall 111a, a substantially flat top plate portion 140 is provided so as to provide a gap with the upper wall 111a and to be parallel to the upper wall 111a. On the front side of the top plate portion 140, a top plate opening 141 is provided as an opening.

  Hereinafter, the arrangement and the like of the photographing unit 150, the air blowing unit 160, and the illumination unit 170 will be described with reference to FIGS.

  FIG. 5 is a perspective view of the heating cooker 1 with the top and side surfaces of the housing 100 removed, and FIG. 6 is a top view of the housing 100 with the top and side surfaces removed.

  7 is a cross-sectional view taken along line C1-C1 in FIG. 6, FIG. 8 is a cross-sectional view taken along line C2-C2 in FIG. 6, and FIG. 9 is a cross-sectional view taken along line C3-C3.

  FIG. 10 is an enlarged top view of the periphery of the main part, and FIG. 11 is an enlarged perspective view of the periphery of the main part.

  As shown in FIGS. 5 to 9, two magnetrons 106 are provided above and below the rear portion of the heating cooker 1. Each magnetron 106 is connected to a respective waveguide 107 that transmits microwaves. Each of the waveguides 107 is connected to each of the radiation openings 108 disposed at the approximate center in the heating chamber 110 when viewed from above.

  Microwaves generated by the magnetron 106 are radiated into the heating chamber 110 from above and below through the respective waveguides 107 and radiation openings 108. By radiating the microwaves from above and below, the object to be heated can be heated uniformly.

  In addition, since the radiation opening 108 is disposed at substantially the center of the heating chamber 110 when viewed from above, microwaves can be radiated uniformly into the heating chamber 110.

  Further, a stirrer 109 that is an antenna for stirring the microwave radiated from the radiation opening 108 and heating the object to be heated more uniformly is provided in the vicinity of the radiation opening 108.

  As shown in FIGS. 5 to 11, a photographing unit 150 and a blower unit 160 are provided above the heating chamber 110.

An illuminating unit 170 (illuminating unit 17) for illuminating the interior of the heating chamber 110 is located above and to the side.
0a, illumination unit 170b).

  The imaging unit 150 includes a support frame 151, a camera substrate 153, a camera 154, a shutter 155, and a drive motor 156. The configuration will be described later in detail.

  The imaging unit 150 is provided so as to cover the wall surface recess 113 on the upper surface of the heating chamber 110 with a support frame 151. The imaging unit 150 is attached so as to face the inside of the heating chamber 110 from the front side of the upper wall 111a of the heating chamber 110.

  Since the imaging unit 150 is provided on the upper wall of the heating chamber 110, that is, on the ceiling side, the imaging unit 150 can capture an image at an angle and a position where the heating chamber 110 is looked down. As a result, the upper side of the object to be heated can be photographed with higher accuracy, that is, with higher resolution and less trapezoidal distortion.

  Such a configuration of photographing from the upper wall of the heating chamber 110 is used for recognizing characters or symbols written on the upper surface of the object to be heated with high accuracy, recognizing the type of ingredients of the object to be heated, or being heated. This is particularly effective in applications such as recognition of the shape and size of an object and recognition of the heating state of an object to be heated.

  With the cooking device 1 according to the present disclosure, it is possible to improve the convenience of the user for business use such as a convenience store or for home use.

  However, in the configuration in which the photographing unit 150 is provided on the upper wall surface, the photographing unit 150 may be contaminated by steam or scattered matter from the object to be heated, resulting in a problem that the photographing accuracy is lowered. Details of this countermeasure will be described later.

  In addition, the photographing unit 150 is provided on the front side of the upper wall 111a of the heating chamber 110. Furthermore, the photographing surface of the camera 154 is provided so as to be inclined with respect to the horizontal plane so that the photographing direction is directed substantially toward the center of the bottom wall 111e of the heating chamber 110. Thereby, the imaging unit 150 can be arranged in a narrow space while avoiding the vicinity of the approximate center in the top view where the radiation opening 108 that radiates the microwave, which is an example of the heating unit, is arranged. In addition, the entire interior of the heating chamber 110 can be photographed with high accuracy while avoiding the vicinity of the center.

  In addition, since the photographing unit 150 is provided with the photographing direction inclined toward the rear side of the vertical direction, it is possible to suppress external light incident from the glass window 122 of the door 120 from affecting the photographing. . That is, it can be avoided that the external light incident from the glass window 122 is reflected directly or indirectly in an image photographed by the camera 154 with high luminance, and the photographing accuracy is reduced.

  The air blower 160 has a fan case 161, a fan 162, and an exhaust port 163. Details will be described later.

  A fan 162 is provided inside the fan case 161. The fan case has an exhaust port 163 for blowing air. The fan 162 is driven by a DC motor (not shown) and generates an air flow for blowing. The fan 162 is driven based on an instruction from the control unit 105.

The air blower 160 is provided at a position in front of the upper wall 111 a of the heating chamber 110 and at a position in the left-right direction of the photographing unit 150. Furthermore, as will be described later, the exhaust port 163 of the blower 160 and the intake port 151e of the photographing unit 150 are provided facing each other in the left-right direction. That is,
The air is blown from the blower 160 to the photographing unit 150 along substantially the left-right direction. Thereby, the ventilation part 160 can be arrange | positioned in a narrow space avoiding the approximate center vicinity in the top view where the radiation opening 108 etc. which radiate | emit the microwave which are an example of a heating part are arrange | positioned.

  In addition, since the exhaust port 163 of the blower 160 and the intake port 151e of the photographing unit 150 are provided to face each other, air can be blown more linearly from the blower 160 to the photographing unit 150. Thereby, pressure loss due to the bending of the air path can be prevented, and strong air can be blown to the photographing unit 150.

  The fan 162 is provided in the fan case 161 so that the vertical direction is the rotation axis. Thereby, the main surface of the fan case 161 can be arrange | positioned in a horizontal direction so that the upper wall of the heating chamber 110 may be followed. Therefore, the air blower 160 can be arranged in a space-saving manner in the vertical direction.

  The illumination part 170 has LED as a light emitting element.

  The illumination unit 170 is arranged so that the light emission direction faces the heating chamber 110 so as to illuminate an object to be heated in the heating chamber 110. The illumination unit 170 is controlled to emit light based on an instruction from the control unit 105.

  The illumination part 170 is arrange | positioned in the back view rather than the approximate center of the upper wall 111a of the heating chamber 110 in the top view. The illumination unit 170 and the imaging unit 150 are arranged at a position sandwiching the waveguide 107 arranged to be inclined with respect to the front-rear direction in a top view. The illumination unit 170 and the imaging unit 150 are disposed at positions sandwiching the radiation opening 108 in a top view. Thereby, the illumination part 170 can be arrange | positioned in a narrow space avoiding the approximate center vicinity in the top view by which various components are arrange | positioned.

[Main part configuration]
The imaging unit 150, the air blowing unit 160, and the surroundings will be described in detail with reference to FIGS.

  FIG. 12 is an exploded perspective view of the imaging unit 150. 13 and 14 are perspective views of the photographing unit 150 from below. As will be described later, FIG. 13 shows a state where the shutter 155 is located at the open position, and FIG. 14 shows a state where the shutter 155 is located at the shielding position. FIG. 15 is an enlarged view around the photographing unit 150 in FIG. FIG. 16 is an enlarged view around the photographing unit 150 in FIG.

  The imaging unit 150 includes a support frame 151, a camera substrate 153, a camera 154, a shutter 155, and a drive motor 156.

  The support frame 151 constituting the frame of the photographing unit 150 is made of resin. Therefore, when supporting the camera board 153, the camera board 153 can be sufficiently insulated, and the camera 154 can be installed with high accuracy in the photographing direction.

  The support frame 151 supports the camera substrate 153, the shutter 155, and the drive motor 156, and constitutes a first air path 200 that is an air path for blowing the airflow from the air blowing unit 160. Details of the first air passage 200 will be described later.

  The support frame 151 has an upper wall 151a, a front side wall 151b, a rear side wall 151c, and a left side wall 151d.

  The upper wall 151 a is a plate having a substantially rectangular main portion, and forms an upper wall of the support frame 151. A photographing opening 152 that is a photographing opening is formed in a substantially central portion of the upper wall 151a.

  The front side wall 151b and the rear side wall 151c are disposed to face each other, and form the front side wall and the rear side wall of the support frame 151. In the present disclosure, the height of the front side wall 151b is formed to be lower than the height of the rear side wall 151c.

  Thereby, the upper wall 151a of the support frame 151 is inclined with respect to the upper wall 111a of the heating chamber 110.

  The left side wall 151d forms the left side wall of the support frame 151. The side facing the left side wall 151d is open, and an air inlet 151e is formed as will be described later.

  The support frame 151 is fixed so that the lower end portions of the front side wall 151b, the rear side wall 151c, and the left side wall 151d are in contact with the upper surface of the upper wall 111a of the heating chamber 110.

  The upper wall 151a, the front side wall 151b, the rear side wall 151c of the support frame 151, and the upper wall 111a of the heating chamber 110 form an intake port 151e as an opening on the side facing the left side wall 151d of the support frame 151. . The intake port 151e is an intake port for sucking air into the support frame 151. The intake port 151 e of the support frame 151 is disposed so as to face the exhaust port 163 of the fan 162.

  The camera substrate 153 has a substantially rectangular flat plate shape, and the camera 154 is attached to the approximate center of the lower surface when the support frame 151 is installed on the upper wall 111a of the heating chamber 110.

  The camera 154 has an imaging surface that is substantially circular. As an image sensor (not shown) of the camera 154, for example, a CCD or a CMOS is used. A condenser lens (not shown) is provided on the imaging direction side of the image sensor. The camera 154 images the inside of the heating chamber 110 based on an instruction from the control unit 105.

  The camera substrate 153 is attached to the support frame 151 so that the shooting direction of the camera 154 faces the inside of the heating chamber 110. The camera substrate 153 is attached to the support frame 151 so that the camera 154 is fitted into the photographing opening 152 of the support frame 151.

  The camera substrate 153 is attached to the support frame 151 so that the photographing opening 152, the concave bottom opening 114, and the wall surface opening 112 are aligned in the photographing direction of the camera 154, that is, the optical axis direction.

  Thereby, the camera 154 can face the inside of the heating chamber 110 and can take an image in the heating chamber 110.

  A shutter 155 and a drive motor 156 are provided on the upper wall 151 a of the support frame 151.

The shutter 155 is a member that shields or opens the imaging surface of the camera 154 so as to be opened and closed. The shutter 155 is rotatably attached to the lower surface of the upper wall 151a of the support frame 151. The shutter 155 is provided so as to cover the camera 154 in the imaging direction of the camera 154 and on the heating chamber 110 side.

  The shutter 155 is a substantially rectangular flat plate, and both ends in the longitudinal direction are formed in an arc shape. The shutter 155 rotates between the open position and the shield position along the surface of the upper wall 151a of the support frame 151, with the rotation axis positioned on the upper side in the longitudinal direction as the rotation center. The shutter 155 is made of resin.

  Here, the open position is a position where the shutter 155 does not cover the imaging opening 152 of the support frame 151, as shown in FIG.

  The shielding position is a position where the shutter 155 covers the photographing opening 152 of the support frame 151 as shown in FIG.

  In the present disclosure, the open position is a position closer to the left side wall 151d of the support frame 151 than the camera 154. That is, in the first air path 200, it is on the downstream side of the camera 154. Thereby, even in the state where the airflow is generated in the first air passage 200, the shutter 155 can be stably opened. That is, the shutter 155 can protect the camera 154 by shielding the photographing opening 152 at the shielding position. In addition, the shutter 155 can capture an image in the heating chamber 110 by the camera 154 by opening the imaging opening 152 at the open position.

  The shutter 155 is arranged on a plane that is substantially in close contact with the camera 154 in the shooting direction of the camera 154. That is, the shutter 155 can more reliably protect the camera 154 from scattered matter such as steam and oil at the shielding position.

  The rotation axis of the shutter 155 is disposed above the camera 154 on the upper wall 151 a of the support frame 151. Thereby, the shutter 155 can be rotated with low energy and high reliability.

  The drive motor 156 is attached to the upper side surface of the upper wall 151a of the support frame 151.

  The rotation shaft of the drive motor 156 is connected to the rotation shaft of the shutter 155. Thereby, the shutter 155 can be rotated by the operation of the drive motor 156. The drive motor 156 rotates to open and close the shutter 155 based on an instruction from the control unit 105.

  The drive motor 156 maintains the states of the shielding position and the opening / closing position by the internal magnetic force. Thereby, generation of noise can be suppressed as compared with a method of holding using an electric spring or the like that requires a current during holding. Therefore, it is possible to suppress the occurrence of noise in the captured image and the deterioration of the imaging accuracy.

  The drive motor 156 is a heating element for driving the motor. The drive motor 156 and the camera 154 are disposed so as to face upside down with respect to the upper wall 151a of the support frame 151. Therefore, heat generated by the drive motor 156 can be prevented from affecting the camera 154.

  In addition, since the drive motor 156 is attached to the upper side surface of the upper wall 151a of the support frame 151, the support frame 151 can be disposed in a narrow space when viewed from above.

  The drive motor 156 is attached to an upper wall 151 a that is inclined in the front-rear direction, that is, the rotation shaft of the drive motor 156 is attached to be inclined with respect to the vertical direction of the heating cooker 1. Thereby, the drive motor 156 can be arranged in a narrow space also in the vertical direction.

  The drive motor 156 is disposed on the upper wall 151a where the camera 154 is disposed. That is, the rotation axis of the drive motor 156 is arranged so as to be perpendicular to the camera 154. As a result, the imaging surface of the camera 154 and the shutter 155 connected to the drive motor 156 can be accurately arranged substantially in parallel.

  As shown in FIGS. 15 to 16, a wall surface opening 112 is provided as an opening on the upper wall 111 a of the heating chamber 110. Further, a wall surface recess 113 is provided so as to cover the wall surface opening 112. On the concave bottom of the wall surface recess 113, that is, on the upper side, a concave bottom opening 114 that is an opening for photographing is provided.

  The side wall of the wall surface recess 113 has a tapered shape that narrows from the heating chamber 110 side toward the recessed bottom opening 114 side. The concave bottom opening 114 is disposed so as to face the vicinity of the camera 154. The cross-sectional area of the opening surface of the concave bottom opening 114 is smaller than the cross-sectional area of the opening surface of the wall surface opening 112. Thus, by making the opening portion smaller, leakage of microwaves from the inside of the heating chamber 110 can be further suppressed.

  Further, the periphery of the concave bottom opening 114 has a ring-shaped convex part upward. Thereby, it can further suppress that the microwave from heating cabinet 110 leaks.

  Since the concave bottom opening 114 is disposed in the vicinity of the camera 154 and the sectional area of the opening surface of the wall surface opening 112 is larger than that of the concave bottom opening 114, the inside of the heating chamber 110 can be photographed at a wider angle.

[Action]
Hereinafter, the operation of the cooking device 1 according to the present disclosure will be described mainly with reference to FIGS. 17 to 19.

  FIG. 17 is a schematic diagram illustrating the photographing unit 150 and the air blowing unit 160 in a top view.

  FIG. 18 is a schematic cross-sectional view from the front illustrating the first air path 200 and the second air path 201.

  FIG. 19 is a schematic cross-sectional view from the side illustrating the first air path 200 and the second air path 201.

  Hereinafter, the first air path 200 and the second air path 201 will be described.

  The support frame 151, the upper wall 111 a of the heating chamber 110, and the wall surface recess 113 form a first air path 200 as a blowing path.

The first air passage 200 uses the air inlet 151e of the support frame 151 as an air inlet, passes through a space formed by the inside of the support frame 151 and the upper wall 111a of the heating chamber 110, and further through the concave bottom opening 114. It is an air passage that uses the wall surface opening 112 as an exhaust port through the space in the wall surface recess 113. That is, the first air passage 200 is an air passage that exhausts the air taken in from the air inlet 151e through the vicinity of the camera 154 toward the heating chamber 110 from the wall surface opening 112. As described above, the first air path 200 bends the airflow from the left and right directions of the heating chamber 110 downward in the heating chamber 110.

  The second air passage 201 is an air passage that is outside the first air passage 200 and flows along the upper side of the upper wall 151 a of the support frame 151. That is, the second air path 201 is an air path that passes through the surface of the camera substrate 153 on the side where the camera 154 is not installed and the vicinity of the drive motor 156.

  The cross-sectional area of the opening surface of the intake port 151e of the photographing unit 150 is smaller than the cross-sectional area of the opening surface of the exhaust port 163 of the blower unit 160. Thereby, it can blow using the one ventilation part 160 with respect to the 1st air path 200 and the 2nd air path 201 which are two air paths.

  Further, the cross-sectional area of the opening of the exhaust port 163 of the blower 160, the cross-sectional area of the opening of the intake port 151e of the support frame 151, and the cross-sectional area of the opening of the concave bottom part opening 114 are sequentially reduced. Is formed. That is, the three openings along the flow path direction of the first air path 200 are formed so that the cross-sectional area decreases in order toward the downstream. Thereby, the airflow blown from the blower unit 160 can be blown from the vicinity of the photographing unit 150 toward the inside of the heating chamber 110 with an increased flow rate. Therefore, it is possible to further protect the photographing unit 150 from the steam and scattered matters that travel toward the photographing unit 150.

  The air blower 160 rotates the fan 162 based on an instruction from the controller 105. Due to the rotation of the fan 162, an air flow is generated from the exhaust port 163 of the blower 160.

  A part of the airflow exhausted from the exhaust port 163 flows into the intake port 151e which is the intake port of the first air passage 200. The remainder of the airflow flows to the second air passage 201 side, which is outside the first air passage 200.

  The airflow flowing into the support frame 151 is guided by the upper wall 151a, the front side wall 151b, and the rear side wall 151c of the support frame 151, and flows in the direction of the camera 154 and the shutter 155.

  When the shutter 155 is located at the open position, part of the airflow that flows in flows along the surface of the shutter 155 and the imaging surface of the camera 154. When the shutter 155 is located at the shielding position, a part of the airflow that flows in flows along the surface of the shutter 155. With this airflow, the imaging surface of the camera 154 and the surface of the shutter can be protected from scattered objects such as steam and oil generated from the heated object.

  The airflow that has flowed into the first air passage 200 is directed downward near the camera 154 and flows to the wall surface recess 113 through the recess bottom opening 114. Furthermore, the airflow flowing into the wall surface recess 113 is exhausted into the heating chamber 110 through the wall surface opening 112.

  As described above, the airflow flowing into the support frame 151 from the air inlet 151e of the first air passage 200 forms an airflow along the camera 154 and the shutter 155, and then the lower heating cabinet 110 side, that is, the shooting direction of the camera 154. It bends toward the side and flows into the heating chamber 110.

In this manner, it is possible to suppress the flying object such as steam or oil from flying in the direction of the camera 154 and the shutter 155 due to the airflow from the camera 154 side to the heating chamber 110 side. Further, the airflow along the surfaces of the camera 154 and the shutter 155 can protect and clean the surfaces of the camera 154 and the shutter 155. Furthermore, the airflow from the camera 154 side toward the heating chamber 110 side dissipates scattered matter such as steam in the photographing direction, and the field of view of the camera 154 can be made clearer. Further, the camera 154 can be cooled by the airflow along the imaging surface of the camera 154. By these, the imaging | photography part 150 can image | photograph the inside of the heating chamber 110 more accurately.

  Moreover, the shutter 155 is located in the 1st air path 200 above the upper wall 111a of the heating chamber 110, and the airflow in the 1st air path 200 flows through the heating chamber 110 side with respect to the shutter 155. That is, an air path is formed between the upper wall 111 a of the heating chamber 110 and the shutter 155. Therefore, the shutter 155 as well as the camera 154 is protected from scattered matter such as steam and oil. Thereby, it can suppress that the shutter 155 which is a movable member is soiled, and the reliability of operation | movement falls.

  The airflow toward the second air path 201 flows along the upper wall 151a of the support frame 151 in the direction of the drive motor 156 and the surface of the camera substrate 153 on the side where the camera 154 is not installed. As a result, the camera 154 and the camera substrate 153 that are made of a semiconductor that is weak at high temperatures can be cooled. Therefore, highly reliable shooting can be performed. In addition, since the drive motor 156, which is a heating element having a motor coil, can be cooled, malfunction of the motor due to high temperature can be suppressed. Therefore, the reliability of opening and closing of the shutter 155 can be further improved.

  Hereinafter, the photographing operation in the photographing unit 150 will be described.

  At the time of shooting, the air blowing unit 160 rotates the fan 162 based on an instruction from the control unit 105. Note that the control unit 105 may rotate the fan 162 immediately before shooting, or may continuously rotate the fan 162 while shooting is not performed.

  Further, the photographing unit 150 rotates the drive motor 156 based on an instruction from the control unit 105. As a result, the shutter 155 is rotated to the open position as shown in FIGS. 13 and 18. At this time, the imaging surface of the camera 154 is exposed toward the heating chamber 110. However, the air flow from the camera 154 toward the heating chamber 110 is formed by the blower 160 and the first air path 200. Therefore, the camera 154 can be prevented from being contaminated by steam or scattered matter from the object to be heated.

  Furthermore, the camera 154 images the heating chamber 110 based on an instruction from the control unit 105. After shooting, based on an instruction from the control unit 105, the drive motor 156 is rotated to rotate the shutter 155 to the shielding position. Thereby, the imaging surface of the camera 154 is shielded toward the heating chamber 110. Therefore, it is possible to more reliably prevent the photographing surface of the camera 154 from being contaminated by steam or scattered matter from the heated object. Further, even when the fan 162 is stopped and no airflow is generated in the first air passage 200, it is possible to reliably prevent the photographing surface of the camera 154 from becoming dirty.

  The airflow in the first air path 200 also passes through the upper and lower surfaces of the shutter 155 and the rotation axis in addition to the imaging surface of the camera 154. Thereby, it can suppress that the shutter 155 which is a movable member gets dirty. Thereby, the reliability of the opening / closing operation | movement of the shutter 155 which is an operation member can be improved.

(Other embodiments)
As described above, the embodiment has been described as an example of the technique disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed.

  Therefore, other embodiments will be exemplified below.

  In the above embodiment, the air blower 160 is arranged on the right side with respect to the photographing unit 150. However, the air blower 160 may be disposed on the left side with respect to the photographing unit 150.

  In the above embodiment, the height of the front side wall 151b of the support frame 151 is formed to be lower than the height of the rear side wall 151c. However, the height of the front side wall 151b and the height of the rear side wall 151c may be formed at the same height. Further, the height of the front side wall 151b may be formed to be higher than the height of the rear side wall 151c.

  Moreover, the form which the support frame 151 has the front side wall 151b and the lower end part of the front side wall 151b is in contact with and fixed to the upper wall 111a of the heating chamber 110 was disclosed. However, the support frame 151 may not be provided with the front side wall 151b, and one end of the upper wall 111a of the support frame 151 may be fixed in contact with the upper wall 111a of the heating chamber 110.

  Moreover, the form to which the support frame 151 was fixed in contact with the upper wall 111a of the heating chamber 110 was disclosed. However, the support frame 151 may be attached to the upper wall 111a of the heating chamber 110 via a support member such as a base.

  In the above embodiment, the shutter 155 is of a rotating type along the photographing surface. However, the shutter may be constituted by a reciprocating method along the photographing surface. Moreover, you may comprise by the hinged door type etc. in which a rotating shaft becomes parallel to an imaging surface.

  Further, as the drive motor 156 that opens and closes the shutter 155, a rotary type using a DC motor is used. However, a linear motor or the like may be used as long as the operating member can open and close the shutter.

  In the said embodiment, the structure by which the 2nd wind path 201 was provided in the downstream of the ventilation part 160 was shown. However, the exhaust port 163 of the blower 160 and the intake port 151e of the support frame 151 may be directly connected without providing a branch path of the air path. In other words, the second air passage 201 may be omitted.

  Moreover, the structure which has a clearance gap between the exhaust port 163 of the ventilation part 160 and the intake port 151e of the support frame 151 was shown. However, the exhaust port 163 of the blower 160 and the intake port 151e of the support frame 151 may be formed as an air passage that is directly connected.

  In the said embodiment, it is comprised so that the ventilation which goes to the imaging | photography part 150 from the ventilation part 160 may become the left-right direction in top view. However, in a configuration in which the heating unit is not disposed in the vicinity of the approximate center in the top view of the upper wall 111a, the air blowing from the blower unit 160 toward the photographing unit 150 may be configured along directions other than the left-right direction in the top view. .

  The present disclosure can be applied to a heating cooker that captures an image of the interior by the imaging unit.

DESCRIPTION OF SYMBOLS 1 Heating cooker 100 Case 101 Front frame 102 Front opening 105 Control part 106 Magnetron (heating part)
107 Waveguide (heating unit)
108 Radiation aperture (heating unit)
109 Stirrer 110 Heater 111a Upper Wall 111b Left Side Wall 111c Right Side Wall 111d Back Wall 111e Bottom Wall 112 Wall Opening 113 Wall Recess 114 Recess Bottom Opening 120 Door 121 Handle 122 Glass Window 130 Operation Unit 131 Operation Switch 132 Display Unit 140 Top Plate 141 Top plate opening 150 Imaging unit 151 Support frame 151a Upper wall 151b Front side wall 151c Rear side wall 151d Rear side wall 151d Left side wall 151e Intake port 152 Imaging aperture 153 Camera substrate 154 Camera 155 Shutter 156 Drive motor (motor)
160 Blower (Blower Fan)
161 Fan case 162 Fan 163 Exhaust port 170, 170a, 170b Illuminating part 200 First air path (air path)
201 Second air passage

Claims (9)

A heating cabinet in which an object to be heated is stored;
A wall surface opening which is an opening provided in the wall of the heating chamber;
A support frame provided outside the heating chamber so as to cover the wall surface opening;
A camera provided on the support frame such that a photographing surface faces the heating chamber through the wall surface opening;
A shutter provided between the opening of the wall surface and the camera, which can be opened and closed so as to shield or open a photographing surface of the camera;
A blower fan that blows an airflow toward the camera and the shutter, and the support frame sucks the airflow blown from the blower fan and guides it to the surface of the imaging surface of the camera. Forming an air passage that exhausts toward the heating chamber through the wall surface opening,
Cooking cooker. The wall of the heating chamber is an upper wall of the heating chamber,
The cooking device according to claim 1. The wall surface opening is provided in front of the center in the front-rear direction of the heating chamber,
The photographing surface is provided on the support frame so as to incline a photographing direction orthogonal to the photographing surface toward a rear side from a vertical direction of the heating chamber.
The cooking device according to claim 1 or 2. The blower fan blows air from the left-right direction toward the support frame,
The support frame sucks an airflow blown from the blower fan, guides the airflow to the surface of the imaging surface of the camera, and then exhausts an air path that exhausts toward the heating chamber located below through the wall surface opening. Forming,
The cooking device according to claim 2. The opening position of the shutter is located on the downstream side where the airflow of the air passage flows from the shielding position,
The cooking device according to claim 1. The rotation axis of the shutter is located above the camera,
The cooking device according to claim 1. A motor for driving opening and closing of the shutter is provided on the outer surface above the support frame,
The cooking device according to claim 1. The blower fan also blows air toward the upper outer surface of the support frame, in addition to blowing air into the air path.
The cooking device according to claim 1. A wall surface recess that is concave toward the camera side from the periphery of the wall surface opening is provided,
The bottom of the wall recess on the camera side is provided with a concave bottom opening that is parallel to the imaging surface of the camera and is an opening smaller than the cross-sectional area of the opening of the wall opening.
The cooking device according to claim 1.