JP2008310962A - Induction heating cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooking device which is capable of preventing a large cooked matter from entering into a main body and is improved in cleanability of an inlet to which dust or lampblack is bonded. <P>SOLUTION: The induction heating cooking device includes a top plate on the upper surface of a main body comprising: a plurality of induction heating coils, an electronic substrate which controls driving of the induction heating coil, a fan unit which is disposed closer to the rear side of the main body than the electronic substrate and cools the induction heating coil and the electronic substrate, an inlet which is disposed in the rear side of the main body and is used for introducing outside air into the main body, and an outlet for exhausting air from the inside of the main body to the outside, wherein an intake air passage is formed in a passage communicating between the fan unit and the inlet, an intake air pocket 50 is removably inserted in the intake air passage, and openings 51 and 52 communicating with the inlet are formed in the upper surface and the part of the side wall surface of the intake air pocket 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an induction heating cooker.

  In recent years, the trend of so-called all-electric homes, in which all home appliances are electrified, is becoming prominent. As part of this, an electromagnetic induction heating cooker that heats the pan itself using eddy current as a cooking device has been reviewed.

  Since this induction heating cooker generates heat not only from the pan, but also from the induction heating coil and the control board that controls the induction heating coil during heating, the induction heating coil and the control board are blown and cooled using a cooling fan. Is generally done. The flow path structure of the conventional induction heating device uses the axial flow fan or the multi-blade fan to vent the cooling air sucked from the top plate inlet on the rear upper surface of the main body to the control board, and further to the induction heating coil. Cool the control board and induction heating coil. The air that has cooled the control board and the induction heating coil is exhausted from the exhaust port to the outside of the main body.

  In such an induction heating cooker, when cooking is performed, dust, water vapor, oily smoke, and the like enter the main body from the intake port together with the cooling air, and adhere to the intake flow path and become dirty. Since the intake flow path is installed in the main body, there is a problem that cleanability from the outside is poor.

  As shown in FIG. 5 and FIG. 6 of the same document, Patent Document 1 is provided with a filter that considers the cleaning property of dust, water vapor, and oil smoke adhering to the intake port to prevent the intake passage from being contaminated. .

  Also, if liquid such as water intrudes from the top plate air inlet due to spilling or pan falling during cooking, the liquid adhering to the electronic board through the cooling channel may cause damage to the electronic board. There was a risk of becoming. In order to improve this, as shown in paragraph 0071 of Patent Document 2, etc., there has been a waterproof structure in which a draining plate and a drain outlet are installed inside the intake passage to prevent liquid from entering the cooling fan.

JP 2004-235124 A JP 2007-73453 A

  Commonly used materials for metallic pans are roughly classified into magnetic materials such as iron and magnetic stainless steel, and nonmagnetic materials such as aluminum and copper. An all-metal induction cooker can handle both magnetic and non-magnetic metal pans. Since non-magnetic metal pans have a low resistivity and magnetic permeability compared to magnetic metal pans, the equivalent series resistance seen from the induction heating coil is small, so when performing desired induction heating on non-magnetic metal pans, The current flowing through the induction heating coil must be increased. This is because the thermal power is proportional to the product of the square of the current flowing through the induction heating coil and the equivalent series resistance.

  In order to increase this current, it is necessary to increase the capacity of the switching elements constituting the inverter. As the current increases, the on-resistance loss of the switching element also increases.

  Induction heating cookers currently on the market generally have a stove number of three. The stove with two fronts disposed on the front is a stove that performs induction heating with a high-power induction heating coil, and the one stove disposed near the center in the width direction of the main body is a stove with a radiant heater. In some cases, the stove at the back is an induction heating coil. Furthermore, since most induction heating cookers are built into the system kitchen, the width, depth, and depth dimensions of the main body are standardized.

  In the case where the two stoves on the front side are all-metal capable of heating the non-magnetic pot, the switching element itself is enlarged in order to increase the capacity of the switching element constituting the inverter. Further, as the current of the induction heating coil is increased, the capacitor and the coil capacity are increased to increase the size, and the number of parts is also increased. Furthermore, the heat dissipating fins for cooling the switching elements must be enlarged. Thus, when the component size is increased and the number of components is increased, it becomes difficult to mount the component component in the limited main body space.

  Furthermore, in recent years, induction heating cookers have a tendency to increase the output of induction heating coils due to demands for shortening cooking time, etc., the amount of heat generated by the switching elements increases, and the grill can be used for large-sized cooked products. Thus, the internal volume tends to increase, and the space for arranging the inverter components is reduced. Therefore, the mounting density tends to increase, and cooling needs to be considered sufficiently.

  Under these circumstances, the amount of cooling air for cooling the electronic components tends to increase, and the flow velocity at the intake port tends to increase. For this reason, steam during cooking, oily smoke, or dust that is taken into the intake passage via the intake port also increases, so that these stains easily adhere to the intake port and the intake passage.

  The non-woven paper filter installed at the intake port in Patent Document 1 described above can suppress dirt on the flow path by collecting dust such as oily smoke, but if the liquid that has passed through the paper filter enters the flow path, There is a risk of damaging electronic components by being sucked. In addition, the pressure loss is increased by arranging a filter at the intake port, and the design changes such as increasing the size of the cooling fan and increasing the rotational speed in order to secure the cooling air volume.

  In addition, as in Patent Document 2, when a centrifugal fan with the depth direction of the main body arranged on the rotation axis and the fan suction port arranged on the intake port side is mounted, the cooling air flow is increased and the cooling fan mounting area is increased. Therefore, it is easy to secure a space for increasing the size of the electronic component. However, since the suction port of the cooling fan faces the rear side of the main unit and is close to the intake port, a waterproof structure is also provided inside the intake channel. When the road component is mounted, the liquid that has entered from the air inlet port is likely to be sucked into the cooling fan through the flow channel component, which may damage the electronic component.

  The object of the present invention is to prevent intrusion of ingredients such as dropped food into the main body in an induction heating cooker in which a plurality of induction heating coils corresponding to magnetic or nonmagnetic metal pans are arranged. It is an object of the present invention to provide an induction heating cooker that can improve the cleanability of the intake port to which the air is attached, has a small pressure loss from the intake port to the intake port of the cooling fan, and can effectively cool electronic components and the like. It is another object of the present invention to provide an induction heating cooker that does not adversely affect the cooling fan and electronic components inside the main body even if liquid is accidentally overflowed on the top plate.

  The present invention has been made to solve the above-mentioned problems. In claim 1, a top plate is provided on the upper surface of the main body, a plurality of induction heating coils, and a plurality of induction heating coils in the main body. An electronic board for controlling driving; a fan unit provided behind the main body for cooling the induction heating coil and the electronic board; and a rear unit provided on the rear side of the main body for introducing outside air into the main body. In an induction heating cooker having an air intake port and an exhaust port for exhausting air from the inside of the main body to the outside, an intake flow channel is formed inside the flow channel connecting the fan unit and the intake port, and the intake flow channel An air intake pocket is removably inserted into the air intake pocket, and the air intake pocket is provided with an opening communicating with the air intake port at a part of the upper surface and the fan side wall surface.

  According to a second aspect of the present invention, a drain port is provided in a lower wall surface on the rear side of the main body of the intake pocket that is detachably inserted into the intake flow path, a wall surface is provided in a bottom portion of the intake pocket on the fan unit side, and the fan pocket side of the intake pocket The upper end portion of the lower wall surface is disposed above the upper end portion of the lower wall surface of the drain port.

  According to a third aspect of the present invention, a top plate is provided on the upper surface of the main body, a plurality of induction heating coils in the main body, an electronic board for controlling driving of the plurality of induction heating coils, and the rear of the main body from the electronic board. A fan unit provided to cool the induction heating coil and the electronic board; an intake port provided on the rear side of the main body for introducing outside air; and an exhaust port for exhausting the air from the inside of the main body to the outside. In the induction heating cooker, an intake passage is formed inside a passage communicating the fan unit and the intake port, and an intake pocket having an upper end formed horizontally in the intake passage is removably inserted. The intake pocket has an upper surface and a part of the fan side wall surface provided with an opening communicating with the intake port, and a lower end portion of the fan side wall surface is inclined downward from the center side toward the side surface side. .

  According to a fourth aspect of the present invention, a top plate is provided on the upper surface of the main body, a plurality of induction heating coils in the main body, an electronic board for controlling driving of the plurality of induction heating coils, and the rear of the main body from the electronic board. A fan unit provided to cool the induction heating coil and the electronic board; an intake port provided on the rear side of the main body for introducing outside air; and an exhaust port for exhausting the air from the inside of the main body to the outside. In the induction heating cooker, an intake passage is formed inside a passage communicating the fan unit and the intake port, and an intake pocket having an upper end formed horizontally in the intake passage is removably inserted. The intake pocket is provided with an opening communicating with the intake port on the upper surface and a part of the fan side wall surface, and further provided with a draining guide for narrowing the intake flow channel on the fan side wall surface in the flow path of the intake pocket. Than is.

  According to the present invention, dirt such as dust and oily smoke adhering to the air inlet can be removed, and the cleanability is improved. In addition, since the food that has entered through the intake port can be caught by the intake pocket, foreign matter that enters the cooling fan can be easily removed.

  In addition, the flow path from the air inlet to the fan unit through the air intake pocket can be designed to suppress the increase in pressure loss by making the opening of the air intake pocket larger than the air inlet, thereby reducing the size of the fan unit and the fan. The output of the drive motor can be reduced, and the increase in the cost of the fan unit and the fan drive motor can be suppressed.

  Also, by opening a part of the opening provided on the side wall of the fan unit in the intake pocket to the intake port, water droplets traveling along the intake pocket wall just before the intake port of the fan unit are eliminated, and the wall surface is inclined. Thus, the liquid traveling on the wall surface can be dispersed to the left and right, and water droplets scattered around the inlet of the fan unit can be eliminated.

  In addition, by draining the liquid that has landed on the bottom of the intake pocket to the rear side of the main body with a draining guide, even if the liquid overflows accidentally, it prevents water droplets from entering the cooling fan through the intake pocket Therefore, it is possible to prevent an adverse effect such as a short circuit of an electronic component inside the main body, and to provide a highly reliable induction heating cooker.

  First, the whole structure of the induction heating cooker in the Example of this invention is demonstrated using FIGS. 1-3.

  FIG. 1 is an external inclination view of the induction heating cooker of the present invention. Reference numeral 1 denotes a glass top plate provided on the upper surface of the main body 2 on which a cooking utensil (load) such as a pan is placed. An operation unit 17 is provided on the front surface of the main body 2.

  The operation unit 17 includes a power switch for the entire device, induction heating coils 3 and 4 described later, and an output adjustment knob for the radiant heater 21. Next to the operation unit 17 is provided a heater-heated grill 19 used for cooking grilled fish and meat dishes.

  A liquid crystal panel 18 is disposed on the front side of the top plate 1, and the output state of the induction heating unit is displayed with liquid crystal to inform the user of the strength of the heating output.

  FIG. 2 is an exploded perspective view showing the mounting of the electronic board and the fan by removing the top plate and the like from the main body in the induction heating cooker of the present embodiment. In the lower part of the top plate 1, an induction heating coil 3 corresponding to the right induction heating unit and an induction heating coil 4 corresponding to the left induction heating unit are arranged. These induction heating coils 3 and 4 generate lines of magnetic force when a high-frequency current flows, and heat the pan placed on the top plate 1.

  The radiant heater 21 provided in the rear of the main body 2 is used when cooking in an earthen pot that cannot be heated by the induction heating method.

  The electronic boards 6 and 7 and the electronic board 8 shown in FIG. 3 are arranged below the induction heating coil 3 and control the induction heating coils 3 and 4 and the radiant heater 21. An intake port 15 provided on the right rear side of the main body 2 sucks cooling air for cooling the inside of the main body 2.

  The exhaust port 16 provided on the left rear side of the main body 2 exhausts the warmed air by cooling the inside of the main body 2. A grill exhaust port 20 provided alongside the exhaust port 16 discharges smoke generated from the grill 19.

  A fan unit 5 (cooling fan) having an impeller 10 (turbo fan) is provided at the back of the inside of the main body 2, and cooling air is introduced into the main body 2 by the impeller 10 driven by a motor 14. Blow. As shown in FIGS. 5A and 5B, the fan casing 13 in which the impeller 10 is housed includes a suction port 9 and discharge ports 11 and 12. Further, a mouth ring 31 for guiding the rectified air to the suction port 9 of the fan casing 13 is provided, and the air volume can be adjusted by changing the size of the discharge port 11 or 12. In addition, the impeller 10 of the present embodiment is composed of a turbo fan as described above, and the fan outer diameter D and the fan inner diameter D1 shown in FIG. 6B have an inner diameter / outer diameter of 0.4 to 0.6. It is set in the relationship. Further, the exit angle of the blades 36 is 110 degrees or less, and the number of blades 36 is 15 or less.

  Next, the flow of cooling air will be described with reference to FIG.

  FIG. 3 is a side cross-sectional view of the induction heating cooker of FIG. 1 cut at substantially the center of the right induction heating unit. The arrow in the figure represents the cooling air. The cooling air sucked from the intake port 15 is guided to the intake port 9 of the fan unit 5 via an intake pocket 50 described later. The air flow sucked into the fan unit 5 is given momentum by the impeller 10 (FIG. 6) having the backward blades 36 driven by the fan motor 14, and deflects the flow direction by 90 degrees in the impeller 10. Thereafter, the air is further deflected by 90 degrees in the fan casing 13 and discharged from the discharge ports 11 and 12 in the direction that coincides with the axial direction of the impeller 10 as cooling air. The cooling air discharged from the discharge port 11 is supplied to the induction heating coil 3 to cool the induction heating coil 3, and the cooling air discharged from the discharge port 12 is supplied to the electronic boards 6, 7, 8 and the electronic substrate 6. , 7 and 8 are cooled. Here, the case where three electronic boards 6, 7, 8 and the discharge ports 11, 12 of the two fan units 5 are used is shown, but the number of electronic boards and the discharge ports of the fan unit 5 are shown. The number of is not limited to this. The cooling air that has cooled the inside of the main body 2 passes through the exhaust port 16 shown in FIG. 2 and is discharged to the outside.

  The cooling of the induction heating coils 3 and 4 will be described in more detail. The vent 22 shown in FIG. 3 is an opening provided in a plate that supports the induction heating coil 3, and is provided in the vicinity below the induction heating coil 3. The vent 23 is an opening provided to blow the cooling air blown from the discharge port 11 of the fan unit 5 directly to the induction heating coil 3. The vent used in the vicinity of the lower side of the induction heating coil 4 on the left side is provided as necessary, and is provided below the induction heating coil 4 or in the vicinity of the periphery in accordance with the arrangement of the grill 19. In this embodiment, only the right induction heating coil 3 is provided with a vent 23.

  A draining plate 25 and a shielding plate 28 are provided in the flow path connecting the intake port 15 and the fan unit 5, and a drain port 29 is provided in the bottom of the flow path. However, the details will be described in Example 1 to be described later.

  In the following configuration, the overall operation will be described. First, the pan is placed on the right induction heating unit, that is, on the top plate 1 above the right induction heating coil 3, the power switch of the operation unit 17 is turned on, and the output adjustment knob corresponding to the right induction heating unit. To the desired output. The control units of the electronic boards 6, 7, and 8 cause a high-frequency current to flow through the right induction heating coil 3, generate magnetic lines of force from the induction heating coil 3, and heat the pan. At the same time, the control unit drives the fan unit 5. The driven fan unit 5 sucks outside air from the intake port 15, blows cooling air onto the electronic boards 6, 7, and 8 to cool it. The cooling air that has cooled the electronic substrates 6, 7, and 8 is directed upward, passes through the vent 22 and the vent 23, and is blown into a space where the induction heating coil 3 and the like are disposed. The air is then blown to cool the air and then exhausted from the exhaust port 16 provided at the rear portion of the main body 2 to the outside air. The supply of the cooling air to the electronic substrate 7 is obtained by the cooling air from the electronic substrate 6 rising through the gaps of the electronic substrate 7.

  A first embodiment of the induction heating cooker in which the intake pocket 50 is combined with an intake passage formed inside the passage will be described with reference to FIGS. FIG. 3 is a cross-sectional view of the main body 2 in which the intake pocket 50 is mounted on the intake port 15, cut at substantially the center of the right induction heating coil 3. FIG. 4 is an external view of the intake pocket 50.

  The intake pocket 50 is detachably inserted into the intake path of the main body 2 from the intake port 15. As shown in FIG. 4, an opening 51 communicating with the intake port 15 is provided on the upper surface, Similarly, an opening 52 communicating with the intake port 15 is provided on the wall surface, and a drain port 53 is provided at the lower part on the rear side of the main body 2. Fan side wall surfaces 54 and 55 having the upper end portion on the intake port 15 side are arranged on the left and right sides of the fan unit 5 with the opening 52 therebetween.

  As shown in FIG. 4, the upper end portions of the fan side wall surfaces 54 and 55 are horizontal, and the lower end portions 54a and 55a of the fan side wall surfaces 54 and 55 are directed downward from the central portion (fan unit 5 side) toward the side surface. Inclined. The upper end portion 56a of the lower wall surface 56 on the fan unit 5 side is disposed above the upper end portion 53a of the lower wall surface on the drain port 53 side. Ingredients that are accidentally dropped into the intake port 15 are caught by the bottom 57 of the intake pocket 50. Therefore, the food item that has been accidentally dropped can be easily taken out from the intake port 15 by removing the intake pocket 50.

  Here, the liquid that enters the inside of the main body 2 from the air inlet 15 will be described. There are three main trajectories of the liquid that enters the air inlet 15 due to the fall of the pan placed on the top plate 1 or the spillage.

  The first is a case where a large amount of liquid has entered, and is a trajectory where most of the liquid that has passed through the opening 51 of the intake pocket 50 from the intake port 15 directly reaches the bottom 57 of the intake pocket 50.

  The second is a trajectory in which a small amount of liquid drops through the fan side wall surfaces 54 and 55 of the intake pocket 50 and the upper flow path wall surface 24 shown in FIG.

  The third is a locus in which a small amount of water droplets scattered in the lower flow path 27 of the intake port 15 are directly sucked into the suction port 9 of the fan unit 5.

  The waterproof structure in each locus will be described.

  First, a part of the liquid that has entered from the intake port 15 reaches the lower end portions 54a and 55a through the fan side wall surfaces 54 and 55 of the intake pocket 50, but this liquid flows through the inclined lower end portions 54a and 55a. Since it flows to the left and right side surfaces of the intake pocket 50, it can be prevented from falling near the inlet 9 of the fan unit 5.

  Further, most of the liquid that has landed directly on the bottom 57 of the intake pocket 50 is drained directly from the drain port 53 to the lower flow path 27 of the main body 2. A portion of the water that has landed at the bottom 57 jumps up to the fan unit 5 side, but after colliding with the lower wall surface 56 on the fan unit 5 side, is drained from the drain port 53 to the lower flow path 27 of the main body 2. Therefore, even when a large amount of liquid enters the intake port 15, it is possible to prevent the liquid from entering the fan unit 5 due to the shape of the intake pocket 50.

  On the other hand, water droplets flowing along the upper flow path wall surface 24 are blocked by the draining plate 25 and land on the bottom 57 of the intake pocket 50 along the slope of the draining plate 25. This liquid is also drained from the drain port 53 to the lower flow path 27 of the main body 2. Therefore, even when a small amount of liquid enters, the draining plate 25 can prevent the liquid from entering the fan unit 5.

  The liquid that has passed through the intake pocket 50 and has landed on the lower flow path 27 of the main body 2 is drained from the drain port 29 to the outside of the main body 2. Even if the liquid that has landed on the lower flow path 27 jumps to the fan unit 5 side, the liquid is discharged to the drain port 29 after colliding with the shielding plate 28, so that the liquid can be prevented from entering the fan unit 5.

  Even if a minute amount of water droplets scattered in the intake passage enters the suction port 9 of the fan unit 5, it is discharged in the centrifugal direction by the rotation of the impeller 10 and adheres to the inner wall surface of the fan casing 13. Become. Since the water droplets adhering to the inner wall surface of the fan casing 13 evaporate due to the swirling flow of the impeller 10, it is possible to prevent the water droplets from adhering to the electronic boards 6, 7, 8 and the induction heating coil 3.

  As described above, even if the air inlet 9 of the fan unit 5 faces the rear side of the main body 2, the intrusion of water droplets scattered through the fan unit 5 toward the electronic boards 6, 7, 8 is prevented. Therefore, it is possible to prevent the electronic substrates 6, 7, and 8 from being damaged due to adhesion of water droplets and to secure the reliability of the electronic substrates 6, 7, 8 and the induction heating coils 3, 4.

  Further, since a part of the intake flow path is configured by the intake pocket 50 that is detachably attached to the main body 2, dirt such as dust and oily smoke adhering to the intake port 15 can be removed, and the cleaning performance is improved.

  In addition, since the food and the like that have entered from the air inlet 15 can be caught by the air intake pocket 50, foreign substances that enter the fan unit 5 can be easily removed.

  In addition, in the flow path from the intake port 15 to the fan unit 5 through the intake pocket 50, the openings 51 and 52 of the intake pocket 50 are made larger than the intake port 15 so that an increase in pressure loss can be suppressed. The fan unit 5 can be reduced in size and the output of the fan driving motor can be reduced, and the cost of the fan unit 5 and the fan driving motor 14 can be suppressed from increasing.

  A second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the intake pocket 50 in the first embodiment is replaced with an intake pocket 60 shown in FIG. Similarly to the intake pocket 50, the intake pocket 60 can be detachably inserted into the intake passage of the main body 2.

  The intake pocket 60 is provided with an opening 61 on the intake side, an opening 62 on the wall surface on the fan unit 5 side, and a drain outlet 63 on the rear side of the main body 2. An upper end portion 65a of the lower wall surface 65 on the side of the fan unit 5 across the fan side wall surface 64 and the opening 62 having the intake port 15 as an upper end portion is disposed above the lower end of the drain port 63a. On the inner wall of the fan side wall surface 64, there is provided a draining guide 66 that protrudes toward the rear side of the main body 2 and narrows the intake path, and the lower end portion 64a of the fan side wall surface 64 is lowered from the central portion toward the side surface portion. Inclined to the side.

  With the above configuration, a waterproof structure for liquid that has entered from the air inlet 15 will be described. A part of the liquid that has entered from the air inlet 15 flows along the fan side wall surface 64 to the lower end portion 64 a, and the liquid that has landed on the drainage guide 66 flows to the rear side of the main body 2, and the suction port 9 of the fan unit 5. Get away from. In addition, the liquid transmitted through the fan side wall surface 64 is distributed to the left and right along the inclination of the lower end portion 64 a and leaves the fan unit 5. In addition, a part of the liquid that has landed directly on the bottom 67 of the intake pocket 60 is drained directly from the drain outlet 63 to the lower flow path 27 of the main body 2.

  In the same manner as in the first embodiment, the water droplets passing through the intake pocket 60 are waterproofed by the draining plate 25 while the water droplets traveling through the upper intake flow channel 24 are obtained, and the liquid flowing in the lower flow channel 27 of the main body 2 is drained from the shielding plate 28 and drainage. The mouth 29 provides a waterproof effect.

  Therefore, even if the air inlet structure of the fan unit 5 faces the rear side of the main body 2 due to the structure of the air intake pocket 60 and the air intake channel structure, the intrusion of water droplets scattered through the fan unit 5 toward the electronic substrate side. As a result, it is possible to prevent damage to electronic components due to adhesion of water droplets and to secure the reliability of the electronic substrate and the induction heating coil.

  As an embodiment of the present invention, Embodiment 3 will be described with reference to FIGS.

  In the configurations of the first and second embodiments, there is almost no obstacle between the air inlet 15 and the air inlet 9 of the fan unit 5 even when the air intake pockets 50 and 60 are attached or removed. There is a possibility that foreign matter entering from the air inlet 15 may collide with the fan unit 5. In the third embodiment, a configuration capable of reducing this possibility will be described.

  FIG. 8 is a side cross-sectional view of the vicinity of the intake flow path obtained by cutting the induction heating cooker at substantially the center of the induction heating coil 3. As shown here, the induction heating cooker of Example 3 holds the resistance plate 72 on the support portion 71 connected to the fan casing 13. FIG. 9 is an external view of the resistance plate 72. As shown here, the resistance plate 72 is formed by covering the outer periphery of a lattice-like net 72a with a frame 72b. FIG. 10 shows an alternative method of mounting the resistance plate 72, in which the resistance plate 72 is fixed at the wall surface of the intake flow path.

  As shown in FIG. 8 or FIG. 10, by covering the upstream of the suction port 9 of the fan unit 5 with the resistance plate 72, foreign matter that has entered from the suction port 15 enters the fan suction port 9 regardless of the presence or absence of the suction pocket 50. There is no fear. Further, by configuring the resistance plate 72 with a lattice net or the like, the pressure loss at the resistance plate 72 can be suppressed to a small level, and the performance degradation of the cooling fan can be suppressed. In this embodiment, a lattice net is used for the resistance plate 72, but a resistance plate having air permeability, such as punching, may be used.

It is the external appearance inclination figure which showed the induction heating cooking appliance of one Example of this invention. It is an exploded inclination figure in the induction heating cooking appliance. It is side surface sectional drawing in the induction heating cooking appliance. It is explanatory drawing of the intake pocket of the same induction heating cooking appliance. It is explanatory drawing of the fan unit of the induction heating cooking appliance. It is explanatory drawing of the impeller of the induction heating cooking appliance. It is explanatory drawing of the intake pocket of the other Example of the same induction heating cooking appliance. It is side surface sectional drawing which showed the inlet port periphery of the fan unit in the induction heating cooking appliance of the other Example. It is explanatory drawing of the resistance board of the same induction heating cooking appliance. It is side surface sectional drawing which showed the inlet port periphery of the fan unit in the induction heating cooking appliance of the further another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 2 Main body 3, 4 Induction heating coil 5 Fan unit 6, 7, 8 Electronic board 9 Suction port 10 Impeller 11, 12 Discharge port 13 Fan casing 14 Motor 15 Intake port 16 Exhaust port 50, 60 Intake pocket 72 Resistance Board

Claims (4)

  A top plate is provided on the upper surface of the main body, a plurality of induction heating coils in the main body, an electronic board for controlling driving of the plurality of induction heating coils, and the induction heating provided behind the main body from the electronic board. An induction heating cooker provided with a coil and a fan unit for cooling the electronic substrate, an intake port for introducing outside air into the main body, and an exhaust port for exhausting the air from the inside of the main body to the outside An intake passage is formed inside the passage communicating the fan unit and the intake port, and an intake pocket is detachably inserted into the intake passage, and the intake pocket is a part of the upper surface and the fan side wall surface. An induction heating cooker characterized in that an opening communicating with the intake port is provided.   The induction heating cooker according to claim 1, wherein a drainage port is provided in a lower wall surface on the rear side of the main body of the intake pocket that is detachably inserted into the intake passage, and a wall surface is provided on a bottom portion of the intake pocket on the fan unit side. An induction heating cooker, wherein an upper end portion of a lower wall surface on the fan unit side of the pocket is disposed above an upper end portion of a lower wall surface of the drain port.   A top plate is provided on the upper surface of the main body, a plurality of induction heating coils in the main body, an electronic board for controlling driving of the plurality of induction heating coils, and the induction heating provided behind the main body from the electronic board. An induction heating cooker provided with a coil and a fan unit for cooling the electronic substrate, an intake port for introducing outside air into the main body, and an exhaust port for exhausting the air from the inside of the main body to the outside An intake passage is formed in the flow passage communicating the fan unit and the intake port, and an intake pocket having an upper end formed horizontally in the intake passage is removably inserted. Induction heating cooking characterized in that an opening communicating with the intake port is provided in an upper surface and a part of a fan side wall surface, and a lower end portion of the fan side wall surface is inclined downward from a central portion side toward a side surface side. vessel   A top plate is provided on the upper surface of the main body, a plurality of induction heating coils in the main body, an electronic board for controlling driving of the plurality of induction heating coils, and the induction heating provided behind the main body from the electronic board. An induction heating cooker provided with a coil and a fan unit for cooling the electronic substrate, an intake port for introducing outside air into the main body, and an exhaust port for exhausting the air from the inside of the main body to the outside An intake passage is formed in the flow passage communicating the fan unit and the intake port, and an intake pocket having an upper end formed horizontally in the intake passage is removably inserted. An opening communicating with the intake port is provided in a part of the upper surface and the fan side wall surface, and a draining guide for narrowing the intake flow channel is provided on the fan side wall surface in the flow path of the intake pocket. Induction heating cooker.

Images