JP5609303B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker.

  FIG. 6 shows a perspective view of a conventional induction heating cooker. A conventional induction heating cooker includes a main body 1, a top plate 2 for placing a cooking utensil disposed on the top surface of the main body 1, a frame 3 for holding the top plate 2, and a top plate 2. Left and right heating coils 4b and 4a provided below, a control board 5 that controls heating, a board cover 6 that is installed above the control board 5 and holds the heating coil 4, and the front and right heating coils of the main body 1 4a, a heating fan 4 for cooling the control board 5 and a cooling fan 7, a suction port 8 provided in front of the main body 1 for supplying cooling air, and a top surface behind the main body 1. A standing wall 10 provided on the substrate cover 6 is provided with left and right exhaust ports 9b and 9a for exhausting cooling air from the heating coil 4 and the control substrate 5 and preventing water entering from the exhaust port 9 from flowing into the main body. Has been.

  However, in the above configuration, water intrusion into the main body 1 from the exhaust port 9 can be prevented, but efficient exhaust of the cooling air from the right heating coil 4a is hindered. As a result, the cooling air from the right heating coil 4a is prevented. Most of the air was exhausted to the exhaust port 9b disposed behind the left heating coil 4b, and there was a problem in cooling efficiency.

Patent Document 1 is an example in which both cooling efficiency and prevention of water intrusion from an exhaust port are achieved.
FIG. 7 shows a cross-sectional view of a main part of a conventional built-in induction heating cooker described in Patent Document 1. A conventional built-in induction heating cooker includes a main body 1, an exhaust port 9 disposed on the upper surface of the sink 11 disposed on the main body 1, and an upright wall 10 a perpendicular to the lower wall 1 a of the outer wall position facing the exhaust port 9. And a vertical wall 10b perpendicular to the top wall 1b provided at a position opposite to the lower wall 1a inside the main body is provided to constitute a box 12 having a constant volume.

  With the above configuration, even if the user spills the water that has entered the pan etc. in the direction of the back wall 11a of the sink 11, and the water is about to enter the exhaust port 9 by the splash, the standing wall 10a Even when a part of the flooding jumps over the upper end of the standing wall 10a, it is blocked by the standing wall 10b to prevent direct water impingement on the control board 5 provided in the main body, By preventing the water from adhering to the back surface of the control board 5 due to inflow by being stored in the box portion 12, if a large amount of water overflows into the main body, before the allowable value stored in the box portion 12 is exceeded, It is possible to release the water that has entered the sink by the opening provided in the wall and prevent the water from adhering to the back surface of the control board 5 or the like. However, in the above configuration, a wall for preventing water ingress is provided in the outer shell of the main body. And the top part It was not able to type.

  As an example in which the top portion is made thin, and both the infiltration of water and the cooling efficiency are compatible, there is one as disclosed in Patent Document 2. FIG. 8 is a cross-sectional view of a main part showing a conventional built-in induction heating cooker described in Patent Document 2. As shown in FIG. The top plate 2 and the support 14 that supports the top plate 2 from below, the frame 3 that covers the end surface portion of the top plate 2, and the main body 1 are provided. With the structure in which the frame 3 is also provided with the exhaust port 9B at a position corresponding to the exhaust port 9A, it is possible to achieve both overflow and cooling performance with a thin top configuration and keep the space of the top plate 2 wide.

However, even with the above-described configuration, the unevenness between the sink and the top plate is large, and in the case of an induction heating cooker such as stationary, there is a large installation dimension restriction and it is difficult to attach an exhaust configuration outside the main body. In addition, when the top surface of the main body has an exhaust port, it is no longer necessary to stand a wall in order to ensure cooling performance.

JP 11-354263 A JP 2005-265209 A

  The present invention solves the above-mentioned conventional problems, and in a limited installation state, without impairing the function of preventing failure and tracking due to water wetting of internal parts due to water intrusion into the main body, cooling efficiency performance An object of the present invention is to provide a highly reliable induction heating cooker that ensures both cooling performance and overflowing performance.

In order to solve the above conventional problems, the induction heating cooker of the present invention includes a box-shaped main body constituting an outer shell having an opening, the heated cooking vessel covers the upper surface of the main body is placed on the upper surface A top plate, a heating coil that is positioned below the top plate and that heats the cooked container, a control board that controls heating, and a board that is installed above the control board and holds the heating coil cover and the cooling fan for provided on the main body front cooling the heating coil and the control board, an intake port provided in the body forward, the provided on the body rear top the heating coil and the control An exhaust port that exhausts cooling air that has cooled the substrate, and further includes a box-shaped inundation barrier provided on the substrate cover, and is formed in a lateral direction and downward from the upper surface of the infiltration barrier , Substrate cover The front wall and the main wall, is formed in the lateral direction with a predetermined interval in the main wall forward, facing perpendicular to the flooding barrier top and the main wall protruding with a predetermined distance between, the formed above said main wall end of the front wall, wherein a front opening communicating with the heating coil to the air outlet, are formed in the lateral direction with a predetermined interval in the main wall rear, the said main wall a rear wall opposed vertically submerged barrier top surface, a rear opening from said main wall end of the rear wall is formed above that communicates to said front opening or al the exhaust port, right and left end portions of the main wall of the side wall is formed in the longitudinal direction is provided at least one a predetermined distance, in the flooding barrier that consists, it has a configuration to place the exhaust port down the front.

  With the above configuration, even when water enters from an exhaust port provided on the top surface of the main body, water can be prevented from flowing into the main body by the main wall, front wall, and rear wall of the inundation barrier. Furthermore, not only was the side wall formed in the front-rear direction with a predetermined interval from the left and right end portions of the main wall, but also a configuration in which a space was provided between the lower end portion of the main wall and the substrate cover to which the flood barrier was attached. Since a large exhaust induction path area for the cooling air of the heating coil can be secured, an induction heating cooker with high cooling efficiency can be provided.

  The induction heating cooker of the present invention prevents water from flowing into the main body by the inundation barrier even when water enters from the exhaust port provided on the top surface of the main body. Failure, electric shock, and tracking can be prevented, and the inundation barrier has an exhaust induction path, so cooling efficiency can be improved, and highly reliable induction heating cooking that combines cooling performance and overflow performance Can be provided.

Overall configuration diagram of induction heating cooker in Embodiment 1 of the present invention The principal part block diagram of the inundation barrier of the induction heating cooking appliance in Embodiment 1 of this invention The principal part block diagram of the induction heating cooking appliance in Embodiment 2 of this invention Sectional drawing behind the induction heating cooking appliance in Embodiment 3 of this invention Sectional drawing of the flooding barrier of the induction heating cooking appliance in Embodiment 4 of this invention Perspective view of a conventional induction heating cooker Sectional drawing of the principal part of the conventional built-in induction heating cooking air described in patent document 1 Main part sectional drawing of the conventional built-in induction heating cooking appliance described in patent document 2

A first aspect of the present invention is a top plate and a box-like body constituting an outer shell having an opening, the heated cooking vessel covers the upper surface of said body Ru placed on the upper surface, positioned below the top plate a heating coil for heating the heated cooking container, a control board for controlling the heating, is installed in the control board upward, and the substrate cover for holding the heating coil, the heating coil provided in the body forward and a cooling fan for cooling the control board, an intake port provided in said body front, and said provided on the body rear top, an exhaust port for exhausting the cooling air which has cooled the heating coil and the control board comprises, further comprising a box-like flooding barrier provided on the substrate cover, are formed from the left and right direction and the flooding barrier top downward, it provided a predetermined interval between the substrate cover Projecting main wall The main wall forward with a predetermined interval is formed in the lateral direction, the front wall that faces perpendicular to the flooding barrier top and the main wall, is formed above said main wall end of said front wall, said heating a front opening communicating to said exhaust port from the coil, the main wall rearwardly with a predetermined interval is formed in the lateral direction, a rear wall opposed perpendicular to the flooding barrier top and the main wall, said front opening a rear opening formed above said main wall end of the rear wall in communication with the pressurized et the exhaust port, the side walls are formed in the longitudinal direction is provided at least one a predetermined distance in the right and left ends of the main wall When, the flooding barrier that consists in, by disposing the exhaust port down the front, body top surface even when the water intrudes from the exhaust port provided in, the main wall in water within the body of the flooding barrier To prevent the inflow of internal parts and live parts Failure due to wetting or electric shock, it is possible to prevent tracking. Further, by providing a predetermined interval between at least one of the left and right end portions of the main wall of the inundation barrier and the side wall, and further providing a predetermined interval between the lower end portion of the main wall and the substrate cover, It is possible to secure a large exhaust guide path area for the cooling air that has cooled the heating coil, and it is possible to increase the cooling efficiency because the cooling air exhaust of the heating coil is not hindered. Therefore, it is possible to provide a highly reliable induction heating cooker that achieves both cooling performance and overflow performance.

A second invention is, in particular the said lower than the substrate covering the upper surface on the exhaust port side position of the rear substrate covering the first invention, to form a mounting surface for mounting the flood barrier, the mounting surface, the By arranging the inundation barrier in front of the exhaust port, the distance between the main wall end surface of the infiltration barrier and the substrate cover can be further increased without changing the height of the main wall. While ensuring a larger exhaust guiding path area and improving the cooling performance, it is possible to maintain water overflow, and it is possible to prevent failure, electric shock, and tracking due to water wetting of internal parts and charging parts.

A third invention is, in particular by providing the flanges extending rearwardly to the board cover and facing the main wall end surface of the immersion barrier of the first aspect, attempting to break from the exhaust port into the body water is attempting to enter from the rear opening of the flooding barrier, since it is received by the flange, it can be made into the hard structure water immersion entry forward from the main wall. Further, even when a long object such as a finger and a spoon is inserted from the exhaust port, the flange can be prevented from entering the front of the main wall, so that it can be prevented from touching a charging part such as a heating coil through which a large current flows.

A fourth invention is, in particular to the first invention, the body rear, e Bei power board unit having a switching power supply board supplies a DC constant voltage to the control circuit as an input commercial power, the side wall of the flooding barrier the overhang to near the body rear surface, by the power supply board unit is configured to cover so as not to look into from the exhaust port, improving the effect of preventing the water from entering immersion to the power supply board unit from the exhaust port Can be made. Moreover, it becomes the structure which a finger | toe, a spoon, etc. do not enter toward a power supply board unit from an exhaust port, and since it does not touch a charging part, an electric shock can be prevented.

Fifth aspect of the present invention, by especially the flanges, such as to face the body rear provided in the side wall end portion of the flooding barrier of the fourth invention, the effect of body rear is prevented from falling into the inner body flooding Can be put on a barrier. If there is no flange, water will enter between the end of the side wall and the rear surface of the main body. However, if there is a flange, it will be surrounded by the side wall and the flange. Even in such a case, in order to submerge the power board unit, it is necessary to pass between the flange and the rear surface of the main unit, so that the power board unit can be further prevented from entering the water, and the charging part will not be wetted. It is possible to prevent electric shocks and breakdowns.

A sixth invention is especially to the first invention, a frame for supporting said top plate, the exhaust port is provided on the frame, the extension line of the frame flange which is formed in constructing the exhaust port by providing an open end of said rear opening of said flood barrier above the even vigorously water from the exhaust port a when subjected to the body, since the rear wall is higher than the extension line of the frame flange, after the water enters the main body rides over the walls, it must be input immersed water above the frame flange extension line. Therefore, water rides over the rear wall prevents the entry immersed in body, and therefore be prevented that water enters or immersion beyond the flooding barrier along the frame flange, electric shock and failure due to water wetting Can be prevented.

A seventh invention is particularly to the body bottom surface of the first invention, provided with a drain hole for releasing the water in the body outside the body, the water in the immersion barrier to the rear wall of the flooding barrier By providing a notch to release the water, water accumulates in the inundation barrier, passes over the front wall, and overflows to the upper surface of the substrate base cover. Since the drain hole provided on the bottom surface of the main body allows the water to escape from the main body, there is no risk of water entering the heating coil side through which a large current flows.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows the overall configuration of the induction heating cooker according to the first embodiment of the present invention, and FIG. 2 is a main part configuration diagram of the flooded barrier according to the first embodiment.

  The main body 1 bends metal into a box shape, has an opening on the upper side, and installs the top plate 2 on which the cooked utensils arranged so as to cover the upper opening of the main body 1 and the top plate 2 are installed on the main body 1. For this purpose, it is composed of a metal frame 3 having holes for supporting and connecting the top plate 2. In addition, the induction heating cooker of the present invention includes a heating coil 4 for heating a cooking utensil provided below the top plate 2, and the heating coil 4 provided in front of the main body 1 and below the heating coil 4. The cooling fan 7 for cooling the control board 5 is provided, and cooling air is sucked from the intake port 8 provided in front of the main body 1 to cool the heating coil 4 and the control board 5 for controlling the heating. Then, it is set as the structure exhausted from the exhaust port 9 provided on the top | upper surface of the main body 1 back. The control board 5 is held in the main body 1 by a board holding member 15, and a board cover 6 is installed above the control board 5, and the board cover 6 flows water entering from the exhaust port 9 into the main body. In order to attach the inundation barrier 16 to prevent this, the rear exhaust port 9 side of the substrate cover 6 is made lower than the upper surface 13 of the substrate cover to form a step, forming a step wall 26 and an attachment surface 23, and below the exhaust port 9. It is set as the structure arrange | positioned ahead.

Here, as shown in FIG. 2, the inundation barrier 16 is directed downward from the upper surface 24 of the infiltration barrier wall having a height that is sufficient to prevent contact with the top plate 2 and the frame 3. A main wall flange 25 is formed so that the end surface of the main wall 17 is opposed to the mounting surface 23. In addition, the main wall 17 and the front wall 18 which are provided in front of the main wall 17 with a predetermined interval and vertically opposed to each other in the left-right direction, and the front wall 18 for guiding the cooling air of the heating coil 4 to the exhaust port 9. A front opening 19 formed in the rear wall 20, a rear wall 20 which is vertically opposed to the left and right direction with a predetermined interval behind the main wall 17, and cooling air guided from the front opening 19 is supplied to the main wall flange 25 and the substrate. The rear opening 21 formed in the rear wall 20 for passing through a predetermined distance to the mounting surface 23 of the cover 6 and discharging to the exhaust port 9 and at least one of the left and right end portions of the main wall 17 are predetermined. A side wall 22 formed in the front-rear direction is provided in a box shape, is attached to the attachment surface 23 of the substrate cover 6, and is disposed in front of the exhaust port 9.

  With the above configuration, as shown in FIG. 1, the inundation barrier 16 provided on the substrate cover 6 is disposed in front of the lower side of the exhaust port 9, so that the exhaust port 9 provided on the top surface of the main body can be removed. Even when water infiltrates, the main wall 17 of the inundation barrier 16 prevents water from flowing into the main body, so that it is possible to prevent failure, electric shock, and tracking due to water wetting of internal components and the charging unit. Further, a predetermined interval is provided between at least one of the left and right end portions of the main wall 17 of the inundation barrier 16 and the side wall 22, and a predetermined interval is also provided between the main wall flange 25 and the mounting surface 23 of the substrate cover. By providing the interval, it is possible to secure a large exhaust guide path area for the cooling air that has cooled the heating coil 4 guided from the front opening 19, and to smoothly discharge the cooling air from the heating coil 4. Cooling efficiency can also be increased.

  Further, the rear side of the substrate cover 6 on the exhaust port 9 side is made lower than the substrate cover upper surface 13 and the mounting surface 23 of the step wall 26 and the inundation barrier 16 is formed, so that the height of the main wall 17 is not changed. The distance between the main wall flange 25 of the inundation barrier 16 and the substrate cover 6 can be further increased. Further, by making the main wall flange 25 and the substrate cover upper surface 13 at the same height position, it is possible to secure a larger exhaust induction path area of the heating coil 4 and to improve the cooling performance, while maintaining the main wall 17 and the step wall 26. If water does not enter the main body 1 side beyond it, water will not reach the heating coil 4 where a large current flows, so it has excellent water overflow and prevents internal components and live parts from getting wet, preventing electric shocks and tracking. be able to.

  Furthermore, the main wall flange 25 is provided on the lower end surface of the main wall of the inundation barrier 16, so that water to enter the main body 1 from the exhaust port 9 tries to enter from the rear opening 21 of the ingress barrier 16. Since it is received by the main wall flange 25, it is possible to make the structure in which water is less likely to enter the front of the main body than the main wall 17 than when the main wall flange 25 is not provided. In addition, even when a long object such as a finger and a spoon is inserted from the exhaust port 9, the main wall flange 25 is prevented from entering the front of the main wall 17, so that it touches a charging part such as the heating coil 4 through which a large current flows. Can also be prevented.

  As described above, it is possible to provide a highly reliable induction heating cooker that achieves both cooling performance and overflow performance.

(Embodiment 2)
FIG. 3 shows a main part configuration diagram of an induction heating cooker in Embodiment 2 of the present invention.

  In the present embodiment, a power board unit 29 having a switching power board 28 having a commercial power supply as an input and supplying a DC constant voltage to a control circuit or the like is provided on the rear side of the main body of the first embodiment of the present invention. The side wall 22 protrudes from the rear surface of the main body with a gap so that the power supply substrate unit 29 is covered so as not to look through the exhaust port 9. Is different in that it is provided. Others are the same as those in the first embodiment, and thus the description thereof is omitted.

With the above configuration, the effect of preventing water from entering the power supply board unit 29 from the exhaust port 9 can be improved, and a finger, a spoon, etc. from the exhaust port 9 toward the power supply board unit 29 can be improved. Since it does not enter and does not touch the charging part, electric shock can be prevented. Furthermore, by providing the side wall flange 30, it is possible to give the flood barrier 16 the effect of preventing the rear surface of the main body from falling to the inner side of the main body. Further, if the side wall flange 30 is not provided, water enters between the end portion of the side wall 22 and the rear surface of the main body. However, if the flange is present, the structure is surrounded by the side wall 22 and the side wall flange 30. Even when water is intentionally applied obliquely, in order to infiltrate the power supply board unit 29, it is necessary to pass between the side wall flange 30 and the rear surface of the main body. Since the charging part does not get wet with water, it is possible to prevent an electric shock, a failure, etc., and to have a high reliability.

(Embodiment 3)
FIG. 4 shows a cross-sectional view behind the induction heating cooker in Embodiment 3 of the present invention.

  In the present embodiment, the exhaust port 9 is provided in the frame 3 of the first embodiment, and the rear opening formed in the rear wall 20 above the extension line of the frame flange 31 formed when the exhaust port 9 is configured. 21 open ends were provided. Others are the same as those in the first embodiment, and thus the description thereof is omitted.

  With the above configuration, even when water is poured into the main body vigorously from the exhaust port 9, the opening end of the rear opening 21 is higher than the extension line of the frame flange 31. In order for water to enter, the water must enter above the extension line of the frame flange 31. For this reason, in order to prevent water from getting over the rear wall 20 and entering from the rear opening 21 to the main body side, and also to prevent water from entering the main body side through the frame flange 31, Can prevent electric shock and malfunction.

(Embodiment 4)
FIG. 5: shows sectional drawing of the flooding barrier of the induction heating cooking appliance in Embodiment 4 of this invention.

  In the present embodiment, the bottom surface of the main body 1 of the first embodiment is provided with a drain hole 32 for allowing the water in the main body to escape outside the main body, and the water in the submerged barrier 16 is allowed to escape on the rear wall 20 of the submerged barrier 16. The notch 33 was provided. Others are the same as those in the first embodiment, and thus the description thereof is omitted.

  With the above configuration, water accumulates in the inundation barrier 16, gets over the front wall 18, and overflows the board cover upper surface 13, so that the main body is formed by the notch 33 provided in the rear wall 20 of the inundation barrier 16. Since water is poured into the bottom surface of the main body 1 and can be released to the outside of the main body by a drain hole 32 provided on the bottom surface of the main body 1, there is no risk of water entering the heating coil 4 side through which a large current flows. Electric shock and breakdown can be prevented.

  As described above, the induction heating cooker according to the present invention can prevent malfunctions, electric shocks, and tracking due to water wetting of internal parts and charging parts, and the inundation barrier secures an exhaust induction path. It can be applied to uses such as home or commercial induction heating cooking appliances.

DESCRIPTION OF SYMBOLS 1 Main body 2 Top plate 3 Frame 4 Heating coil 5 Control board 6 Substrate cover 7 Cooling fan 8 Intake port 9 Exhaust port 10 Standing wall 11 Sink 12 Box part 13 Substrate cover upper surface 14 Support body 15 Substrate holding member 16 Inundation barrier 17 Main wall 18 Front wall 19 Front opening 20 Rear wall 21 Rear opening 22 Side wall 23 Mounting surface (flooding barrier mounting surface)
24 Infiltration barrier upper surface 25 Main wall flange 26 Step wall 28 Switching power supply board 29 Power supply board unit 30 Side wall flange 31 Frame flange 32 Drain hole 33 Notch

Claims (7)

A box-shaped main body constituting an outer shell having an opening on the upper surface, a top plate to be heated cooking vessel covers the upper surface of said body Ru is placed, was positioned below the top plate the heated cooking container A heating coil for heating, a control board for controlling heating, a board cover installed above the control board for holding the heating coil, and provided in front of the main body for cooling the heating coil and the control board a cooling fan for an intake port provided in said body front, provided in the main body rear top surface, and an exhaust port for exhausting the cooling air which has cooled the heating coil and the control board, and further, comprising a box-like flooding barrier provided on the substrate cover, are formed from the left and right direction and the flooding barrier top downwards, the main wall protruding with a predetermined distance between the substrate cover, Forward of the main wall Is formed in the lateral direction with a predetermined interval, said main wall and the flooding barrier top surface vertically facing front wall, is formed from above the main wall end of said front wall, said before Symbol heating coil a front opening communicating with the exhaust port, said main wall rearwardly with a predetermined interval is formed in the lateral direction, a rear wall opposed perpendicular to the flooding barrier top and the main wall, the front opening or al the A rear opening formed above the main wall end of the rear wall communicating with the exhaust port, and a side wall formed in the front-rear direction with a predetermined distance from at least one of the left and right end portions of the main wall ; induction heating cooker constructed the flooding barrier, arranged in the exhaust port down forward in. The lower the substrate cover the upper surface on the exhaust port side position of the substrate cover rear, said forming a mounting surface for mounting the flood barrier, the mounting surface, arranged said flooding barrier to the exhaust port down forward claims Item 2. An induction heating cooker according to item 1. Induction heating cooker according to claim 1 provided with a flange extending rearwardly so as to face the substrate cover to said main wall end face of the flooding barrier. Said body rearward, a power supply board unit having a switching power supply board supplies a DC constant voltage to the control circuit as an input commercial power, wherein the side walls of the flooding barrier is flared to near the body rear surface, said power supply board unit is the The induction heating cooker of Claim 1 comprised so that it might not look in from an exhaust port. The induction heating cooker of Claim 4 which provided the flange which opposes the said main body rear surface in the said side wall edge part of the said inundation barrier. A frame for supporting said top plate, said air outlet provided in said frame, said rear opening aperture of the flooding barrier above the than the extension line of the frame flange which is formed in constructing the exhaust port The induction heating cooker according to claim 1, wherein an end is provided. The bottom of the unit, the water in the body includes a drain hole for releasing to the outside of the body, the claim is provided a cutout for releasing the water in the immersion barrier to the rear wall of the flooding barrier 1 The induction heating cooker described in 1.