JP2013097934A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exchange a substrate without removing a heating coil and a duct.SOLUTION: An induction heating cooker comprises: a plate provided on the top of a body 2; and the body 2 incorporating a right heating coil 11a and a left heating coil 11b, incorporating a blower fan blowing cooling air to the right heating coil 11a and the left heating coil 11b; a substrate case arranged on an undersurface of the right heating coil 11a and having an opening for blowing the cooling air to the left heating coil 11b; a left cooling case having a group of openings for blowing the cooling air from under the left heating coil 11b; a substrate 84 arranged between the substrate case and the left cooling case; and a detachable wind tunnel housing a part of the substrate 84 in an air duct which transmits the cooling air from the opening of the substrate case to the left cooling case to form the air duct. The substrate 84 is detached from above after detaching the plate and the air duct.

Description

  The present invention relates to an induction heating cooker that facilitates replacement of an electronic board.

  The induction heating cooker performs cooking using the Joule heat generated by the eddy current generated at the bottom of the pan by the magnetic field lines generated by flowing a high-frequency current through the induction heating coil.

  In such an induction heating cooker, many electronic components have been used in order to increase added value, and it has become impossible to fit in a board case that houses a board. In addition, there has been a case where it has to be placed at a high temperature position with a function.

  In Patent Document 1, a substrate is disposed on the grill heating unit between the right heating coil and the left heating coil and below and in front of the left heating coil, and the substrate is disposed in the duct. The substrate (electronic component) is cooled.

JP 2008-53075 A

  When an electronic component or the like mounted on the board fails, it is necessary to take out the board and replace the failed part. However, the induction heating cooker shown in Patent Document 1 described above is covered with a duct from the upper part of the board, and left and right heating coils are placed on the upper part of the duct. It was necessary to remove the duct after removing the heating coil. Moreover, in order to remove the heating coil, it was necessary to work so as not to damage a plurality of wires connected to a power source for supplying power to the heating coil and a temperature sensor for detecting the temperature of the pan or the like.

  For this reason, there is a problem that workability is very poor.

  The present invention has been made to solve the above-described problems, and includes a main body and a plate on which an object to be heated such as a cooking pan is placed on the main body, and the plate includes the plate. The right heating coil and the left heating coil that are provided on the lower surface of the heater and the right heating coil and the left heating coil, and the fan that blows the cooling air to the right heating coil and the left heating coil are built in, and the cooling fan is blown to the left heating coil. A substrate case located on the lower surface of the right heating coil, a left cooling case having an opening hole group for blowing the cooling air from below the left heating coil, the substrate case, and the left cooling case, And a detachable food that houses the part of the substrate in an air passage that passes cooling air from the opening of the substrate case to the left cooling case and constitutes the air passage. Comprising the substrate It is capable of removing the substrate by removing the rate and the air channel from above.

  According to the present invention, it is possible to replace the substrate without removing the heating coil and duct, and the workability is very good.

It is a perspective view of the state which stored the induction heating cooking appliance (operation part is an open state) concerning one example in the kitchen cabinet. FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a perspective view when an operation part is closed to the operation part case of the induction heating cooking appliance which concerns on one Example. It is explanatory drawing of the space channel | path of the main body of the same induction heating cooking appliance. It is upper surface explanatory drawing of the state which removed the plate part and the upper surface operation part from the same induction heating cooking appliance. It is upper surface explanatory drawing of the state which removed the plate part and the heating coil from the induction heating cooking appliance. It is explanatory drawing of the board | substrate case of the same induction heating cooking appliance. It is explanatory drawing of the cooling case mounted in the partition plate of the same induction heating cooking appliance. It is explanatory drawing of the cooling case of the induction heating cooking appliance. It is explanatory drawing of the left cooling case mounted in the partition plate of the same induction heating cooking appliance. It is explanatory drawing which removed the food at the time of replacement | exchange of A board | substrate of the same induction heating cooking appliance.

  Embodiments of the present invention will be described below with reference to FIGS.

  1 and 2, the main body 2 of the cooking device is dropped from the upper surface of the kitchen cabinet 1, and after installation, an oven (roaster) 4, an operation unit 5, and a power switch 19 are connected from the front of the kitchen cabinet 1. It can be operated.

  In the kitchen, a ventilation device 200 is provided above the rear side of the main body 2 fitted in the kitchen cabinet 1. The ventilator 200 is operated when cooking and exhausts steam or oily smoke containing moisture to the outside and ventilates the room.

  A cooking pan 100, which is an object to be heated at the time of cooking, is placed on a plate 3 made of heat-resistant glass or the like and placed on the upper surface of the main body 2. The peripheral end surface of the plate 3 is protected by a plate frame 20 and covered. A plate portion 51 on which a heated object is placed is formed.

  A placement unit 6 is drawn on the plate 3, and cooking can be performed by placing a cooking pot on the placement unit 6. The placement unit 6 includes a placement unit right 6a on the right before the upper surface of the plate 3 and a placement unit left 6b on the left, and a placement unit in the back (center rear) between the placement units 6a and 6b. A center 6c is arranged. And the heating coil 11 which is located in the lower part of each mounting part 6 of the plate 3 and arrange | positioned in the upper part in the main body 2 and is a heating means for heating the cooking pan 100 is installed.

  As shown in FIG. 5 with the plate part 51 removed, the front heating coil 11d is a right heating coil 11a and a left heating coil 11b, a right heating coil 11a on the mounting part right 6a, and a left heating coil 11b. Arranges the left heating coil 11b correspondingly. A central heating coil 11c is disposed corresponding to the mounting portion center 6c.

  The right heating coil 11a and the left heating coil 11b each output 3 kW, and the center heating coil 11c outputs 2 kW induction heating. Not only iron and stainless steel but also nonmagnetic metal cooking pot 100 may be induction-heated.

  In FIGS. 1 and 2 again, on the front side of the plate 3, an upper surface operation unit 9 and an upper surface display unit 10 located on the back side thereof are provided. The upper surface operation unit 9 mainly sets the heating power and the heating time of the heating coil 11 and displays information set by the upper surface operation unit 9 on the upper surface display unit 10.

  The oven 4 disposed on the left side of the front surface of the main body 2 is for baking an object to be heated such as fish, meat, pizza, and the opening is closed by a door 4a. Although the oven 4 is provided on the left side of the front surface of the main body 2 in this embodiment, it may be configured to be provided on the right side of the front surface. Ovens are sometimes called roasters and grills.

  Next to the oven 4, a front panel 18, a power switch 19, and an operation unit 5 that mainly sets cooking conditions for the oven 4 are provided below the front panel 18 and the power switch 19.

  Reference numeral 17 denotes an operation unit case, which is provided inside the front surface of the main body 2 so that the operation unit 5 can be stored when the operation unit 5 is closed. The operation unit 5 is a so-called kangaroo pocket type operation unit 5.

  FIG. 1 shows a state where the operation unit 5 is opened, and FIG. 2 shows a state where the operation unit 5 is closed. Reference numeral 5a denotes an operation surface, which is provided on an upper surface portion that is easy to operate by a user when the operation portion 5 is opened by setting and displaying cooking conditions such as heating power, heating time, menu selection, and the like. . Reference numeral 5b denotes an operation unit front panel, which is flush with the front panel 18 when the operation unit 5 is closed.

  The control circuit 150 is an inverter board 15 that supplies power to the heating coil 11, and a control board 13 that controls power supplied to the heating coil 11 and heating of the oven 4.

  Reference numeral 16 denotes a radiating fin, which is attached to an electronic component that generates heat and efficiently exchanges heat with air blown from a blower fan 12 described later.

  A board case 14 covers the control board 13 and the inverter board 15 and efficiently sends air blown from a blower fan 12 described later to the control board 13 and the inverter board 15.

  Reference numeral 13 denotes a control board which controls a power source supplied to the heating coil 11 and a heating unit (not shown) of the oven 4 to be described later in accordance with set cooking conditions (heating power and heating time).

  Inside the main body 2, an air blowing fan 12, which is a cooling means for blowing air sucked from an air inlet 7, which will be described later, into the main body 2 in order to cool the heating coil 11 that is a heat generating component and the electronic components of the control circuit 150. Are arranged behind the control circuit 150. In this embodiment, the blower fan 12 is disposed at the right rear portion of the main body 2.

  The suction portion 12a of the blower fan 12 is provided in a rear space 50 provided on the rear side of the main body 2 on the rear side of the substrate case 14 described later.

  The rear space 50 is provided on the rear side 2b of the main body 2 constituting this space on the front side of the main body 2 through a rear intake port 7a opened for sucking outside air and a space passage 90 described later. A front intake port 7b, which will be described later, and a blowout portion 12b of the blower fan 12 are connected by a space, and the others constitute a substantially sealed space.

  Therefore, when the blower fan 12 operates, the air in the rear space 50 is sucked from the suction portion 12a of the blower fan 12, discharged from the blowout portion 12b, and blown to the substrate case 14. When air in the rear space 50 is blown to the substrate case 14, the inside of the rear space 50 becomes negative pressure, and outside air is sucked from the rear intake port 7 a and the front intake port 7 b communicating with the rear space 50. The electronic components mounted on the control circuit 150 in the substrate case 14 are cooled.

  Reference numeral 7 denotes an intake port for sucking outside air into the main body 2, and a rear intake port 7 a, which is one intake port 7 for sucking outside air by driving the blower fan 12, is provided on the right side of the back surface portion 2 b of the main body 2. The rear intake port 7a is provided with fine ventilation holes by punching holes across the vertical part 2b1 and the inclined part 2b2 of the back surface part 2b, and is provided closer to the rear than the suction part 12a of the blower fan 12. The air inside the kitchen cabinet 1 is sucked from the rear air inlet 7a.

  Further, the other intake port 7 is a front intake port 7 b provided in the operation unit case 17 on the front side of the main body 2.

  Next, the front intake port 7b will be described with reference to FIG.

  FIG. 3 is a perspective view of the operation unit case 17 with the operation unit 5 closed.

  On the back side of the hinge portion 31 of the operation portion case 17, a front intake port 7b having a wide opening and a downward opening and having a plurality of bars 7c is provided.

  The plurality of crosspieces 7c prevent foreign matters such as paper dust and disposable chopsticks from being inserted and fingers from entering. Furthermore, the dust adhering to the front intake port 7b of the operation unit case 17 when viewed from the front of the kitchen cabinet 1 can be confirmed and cleaned.

  Since the hinge portion 31 is provided at the front lower end 5b1 of the operation portion 5 and the front lower end 17b of the operation portion case 17, the operation portion front panel 5b does not hang downward from the hinge portion 31 even when the operation portion 5 is opened. The mouth 7b can secure intake without reducing the area for intake.

  A route from the front intake port 7b will be described. In FIG. 4, which shows a cross section viewed from the front side of the main body 2 by cutting the substrate case 14 behind the operation section case 14, the bottom surface 14 a of the substrate case 14, the bottom surface 2 a of the main body 2, and the bottom surface 14 a outside the substrate case 14. In order to provide a space between the main body 2 and the bottom surface 2a of the main body 2, a space passage 90 is provided with two partition plates 14b provided therebetween. The space passage 90 is an air passage that guides air sucked from the front intake port 7 b to the rear space 50. In order to increase the cross-sectional area of the space passage 90 and reduce the resistance, the reinforcing bead 2a1 is provided so as to be convex outwardly as a shape extending in the depth direction instead of the width direction.

  The position where the space passage 90 is provided is the place where the temperature rise is the smallest in the main body 2, and the temperature of the cooling air sucked from the front of the main body 2 is not heated unnecessarily to the rear space 50. It is possible to guide.

  Further, the cooling air is caused to flow along the bottom surface 14 a of the substrate case 14, so that the temperature rise in the substrate case 14 can be reduced.

  The space air passage 90 is configured to be surrounded by the bottom surface 14 a of the substrate case 14, the partition plate 14 b provided on the bottom surface 14 a of the substrate case 14, and the bottom surface 2 a of the main body 2. 2 so as not to leak directly into.

  Therefore, the air sucked from the front intake port 7b flows to the space passage 90 without always passing around the operation unit 5, so that the operation unit 5 can be kept clean.

  The description will be given with reference to FIGS. 1 and 2 again. Reference numeral 8 denotes an exhaust port for discharging the air blown by the blower fan 12 from the inside of the main body 2.

  A right exhaust port 8a and a left exhaust port 8b are provided on the upper surface of the plate frame 20 above and behind the control circuit 150 of the main body 2 and behind the plate 3. Waste heat after cooling the heating coil 11 and the electronic components of the control circuit 150 which are heat generating components is discharged upward from the exhaust port 8 of the plate frame 20 behind the plate 3 provided in the main body 2. Waste heat of the oven 4 is also discharged from the left exhaust port 8b. An exhaust cover 55 for preventing entry of foreign matter is detachably mounted on the upper portion of the exhaust port 8.

  Here, the flow path of the wind from the substrate case 14 will be described with reference to FIG. 7 as viewed from the left side of the substrate case 14 which is inside when the main body 2 is assembled. As described above, the blower fan accommodating portion 14w at the rear portion of the substrate case 14 includes the blower fan 12, and the blowout portion 12b of the blower fan 12 is located inside the substrate case 14 on the front side of the blower fan accommodating portion 14w. And the blower outlet 14s opened in the position just before the blowing part 12b of the ventilation fan 12 is provided in the side surface 14c of the board | substrate case 14. As shown in FIG.

  The air outlet 14s has a shape in which a part of the side surface 14c is cut out, and is connected to a lead wire through hole 14z provided at an end of the upper surface 14y. A plurality of lead wires pass from the control circuit 150 inside the substrate case 14 to the right heating coil 11a on the upper surface 14y through the lead sensor through hole 14z.

  The blower outlet 14s is arranged below the later-described central heating coil 11c (FIG. 5), and is arranged below the later-described cooling case 60 (FIG. 8) serving as an air passage to the central heating coil 11c (FIG. 5). It faces the receiving port 60a (FIG. 8) provided to face each other.

  From the air outlet 14s, the air immediately after exiting the air outlet 12b of the blower fan 12 becomes the cooling air D mainly blown out in the lateral direction. Since the lead wire through hole 14z connected at the end is closed in a wall shape from the inside to the outside of the substrate case 14, the wind hardly escapes above the lead wire through hole 14z.

  The temperature of the air discharged from the air outlet 14s of the substrate case 14 provided immediately before the blowout portion 12b of the blower fan 12 is the room air sucked from the rear space 50 and the front intake port 7b around the suction portion 12a of the blower fan 12. It is air at approximately the same temperature.

  In addition, the front side of the side surface 14c is provided with an opening 14v for blowing the air that has cooled the control circuit 150 to the left cooling case 80 described later.

  Next, FIG. 6 which shows the state which removed the plate part 51 and the heating coil 11 demonstrates. A substrate case 14 is arranged on the right side of the main body 2. The oven 4 is on the left side, and the oven 4 is surrounded on the upper and right sides by a partition plate 70 for supporting heat insulation and structural parts. A left cooling case 80 is provided in front of the partition plate 70. A cooling case 60 is provided on the back side of the left cooling case 80.

  The cooling case 60 on the back side of the main body 2 related to the air outlet 14s of the substrate case 14 will be described with reference to FIG. 8 of the cooling case 60 with the left cooling case 80 removed.

  The cooling case 60 is provided on the partition board 70 and the coil substrate 73 placed on the substrate holder B72. The central heating coil 11c is placed on the cooling case 60 and the cooling air is discharged from the hole 60b to the center. The heating coil 11c is cooled.

  Wind from the left cooling case 80 flows into the opening 60 c provided on the front side of the cooling case 60 to cool the coil substrate 73.

  A receiving port 60a that opens downwardly on the right side of the cooling case 60 is provided to face the air outlet 14s of the substrate case 14 disposed on the right side of the main body 2. Then, the cooling air D discharged from the air outlet 14s of the substrate case 14 is received by the receiving port 60a and collides with the flow from the front and the guide wall 60f (FIG. 9) for guiding the inflowing cooling air D to the back side and upward. Then, it is guided upward by the guide wall 60e that guides upward, and is discharged from the hole 60b to cool the central heating coil 11c on the cooling case 60.

  In FIG. 6, the right heating coil 11a is placed on the substrate case 14, and cooling air is discharged from the opening hole group 14u to cool the right heating coil 11a.

  And the cooling air which cooled the electronic component mounted in the built-in control circuit 150 is discharged | emitted from the opening part 14v of the side surface 14c of the substrate case 14 shown in FIG. The cooling air flows into the left cooling case 80, and the left heating coil 11b placed on the left cooling case 80 is discharged from the opening hole group 80a to cool the left heating coil 11b. The opening hole group 80a includes a hole group 81b (FIG. 10) and a modified hole 81d (FIG. 10), which will be described later.

  FIG. 10 is a configuration diagram showing the cooling air inflow portion of the left cooling case 80, with the left heating coil 11b, the upper surface operation portion 9 and the upper surface display portion 10 shown in FIG. The left cooling case 80 includes a coil lower duct 81 provided just below the left heating coil 11b and a substantially L-shaped food 82 on the near side. Below the substantially L-shaped food 82 on the near side, an A substrate 84 that is placed on the mill holder 83 and connected to the upper surface operation unit 9 and the upper surface display unit 10 is provided. The A substrate 84 can be removed by removing the food 82.

  The cooling air flowing from the opening 82a, which forms the opening 82a with the fluid 82 and the A substrate 84, cools the A substrate 84, and then flows into the hole group 81b arranged in a circumferential shape on the upper surface of the duct 81 below the coil to become a jet. Then, the lower side of the left heating coil 11b is cooled.

  Further, the cooling air flowing through the opening 81c by forming the opening 81c with the opening-side end portion of the coil lower duct 81 and the partition plate 70, which are formed in a substantially U-shape, is mostly a modified hole 81d on the upper surface of the left cooling case 80. The center portion and the upper surface portion of the left heating coil 11b are cooled, and a part flows to the cooling case 60 adjacent to the back.

  The opening 82a and the opening 81c described above are arranged to face the opening 14v on the side surface 14c of the substrate case 14 shown in FIG.

  The present embodiment has the above configuration, and the operation will be described next.

  When cooking, the ventilator 200 is driven and exhausted.

  When the cooking pan 100 is placed on the placement center 6c of the plate 3 and induction heating is performed by the central heating coil 11c, the power is turned on by the power switch 19, and the upper surface operation unit is checked while checking the display on the upper surface display unit 10. Operate 9 to set the temperature and heating power and operate to start heating.

  When heating is started, the central heating coil 11 c is controlled by the control circuit 150 to heat the cooking pan 100. Further, the blower fan 12 rotates and sucks cooling air from the rear intake port 7a and the front intake port 7b.

  When the air sucked from the front air inlet 7b passes through the space passage 90 provided under the substrate case 14, the bottom surface 14a of the substrate case 14 whose temperature rise is originally low is cooled and stored in the substrate case 14. The temperature rise of the electronic components of the control circuit 150 is mitigated.

  In addition, the temperature of the air in the kitchen cabinet 1 sucked from the rear air inlet 7a is somewhat increased by using the induction heating cooker for a long time. However, the temperature is lowered by mixing with air having a small temperature rise sucked from the front air inlet 7b in the vicinity of the suction portion 12a of the blower fan 12, and air lower than the temperature of the air when staying in the kitchen cabinet 1 is reduced. The air is blown into the substrate case 14 by the blower fan 12.

  The cooling air D discharged from the outlet 14s of the substrate case 14 is received by the receiving port 60a, and the inflowing cooling air D collides with the flow from the front and the guide wall 60f that guides the cooling air D that flows in the upper side and guides it upward. Guided upward by the guide wall 60e and discharged from the hole 60b, the central heating coil 11c on the cooling case 60 is cooled. The wind that has cooled the lower and upper surfaces of the central heating coil 11 c flows to the exhaust port 8.

  At the same time, the blower fan 12 blows air into the substrate case 14 to cool the electronic components mounted on the control circuit 150.

  And the wind which cooled the electronic component flows into the right heating coil 11a from the opening hole group 14u of the substrate case 14 upper surface 14y. The other flows to the left cooling case 80 arranged to face the opening 14v. The wind that has cooled the lower surface and upper surface of the right heating coil 11 a flows to the exhaust port 8.

  The A board 84 is cooled from the opening 14v through the window 81 of the left cooling case 80, flows into the coil lower duct 81, and is ejected from the hole group 81b to cool the left heating coil 11b. Further, the wind that flows directly from the opening 14v to the coil lower duct 81 is discharged from the deformed hole 81d to cool the left heating coil 11b. The wind that has cooled the lower surface and the upper surface of the left heating coil 11 b flows to the exhaust port 8.

  Further, a part of the wind that has flowed through the coil lower duct 81 flows into the cooling case 60, cools the coil substrate 73, and flows into the exhaust port 8.

  And the air which cooled the electronic component and the heating coil is exhausted from the exhaust port 8.

  The exhaust is smoothly exhausted to the ventilator 200 and ventilated by the ventilator 200. In this case, the operation unit 5 is generally used in a closed state. When the oven 4 is used, the operation unit 5 is generally used in an open state.

  Next, the operation of the replacement procedure for the A substrate 84 will be described.

  Unplug the power plug (not shown) that supplies power to the main unit 2 from the outlet. The main body 2 dropped into the kitchen cabinet 1 is pulled out from the counter hole of the kitchen cabinet 1. The plate part 51 fixed to the main body 2 is removed. The A substrate 84 appears as shown in FIG. 5 by removing the operation case 91 that supports the upper surface operation unit 9 of the plate unit 51 and the substrate of the upper surface display unit 10.

  Therefore, when the screw 82c for fixing the food 82 is removed and the engaging part 82b with the coil lower duct 81 is removed, the mounting part 82d placed on the coil lower duct 81 is removed and the L-shaped food 82 is removed upward. At this time, it is easy to work because it is disengaged from the opening 14v of the substrate case 14 engaged with the opening 82a of the food 82.

  And since it will be in the state shown in FIG. 11, the A board | substrate 84 can be easily removed and replaced | exchanged from the main body 2. FIG.

  As described above, according to this embodiment, it is possible to replace the substrate without removing the heating coil and the duct, and the workability is very good.

DESCRIPTION OF SYMBOLS 1 Kitchen cabinet 2 Main body 2a, 14a Bottom surface 2b Back surface part 3 Plate 5 Operation part 5a Operation surface 5b1, 17a Front lower end 7 Intake port 7a Rear intake port 7b Front intake port 8 Exhaust port 11 Heating coil 11c Central heating coil 11d Front side Heating coil 12 Blower fan 12a Suction part 12b Outlet part 14 Substrate case 14b, 70 Partition plate 14c Side face 14s Outlet 17 Operation part case 20 Plate frame 26 Hinge 31 Hinge part 50 Back space 51 Plate part 60 Cooling case 60a Receiving port 82 82a Opening portion 82b Engaging portion 82c Screw 82d Placement portion 90 Space passage 91 Operation case 100 Cooking pan 150 Control circuit 200 Ventilation device D Cooling air G Clearance

Claims (1)

  A main body, and a plate on which an object to be heated such as a cooking pan is placed at the top of the main body, and in the main body, a right heating coil and a left heating coil that are provided on the lower surface of the plate and arranged on both front sides, A board case located on the lower surface of the right heating coil, having a built-in fan for blowing cooling air to the right heating coil and the left heating coil, and having an opening for blowing cooling air to the left heating coil; A left cooling case having an opening hole group for blowing the cooling air from below the left heating coil, a substrate disposed between the substrate case and the left cooling case, and the left from the opening of the substrate case A part of the substrate is housed in an air passage for passing cooling air to the cooling case, and a detachable food is formed to constitute the air passage, and the substrate is removed by removing the plate and the food. Taken from above Induction cooking device, characterized in that it is Succoth.