JP6829948B2 - Induction heating cooker - Google Patents

Description

The present invention relates to an induction heating cooker used by being installed on an installation surface such as a counter in a kitchen or the like.

Patent Document 1 below discloses an induction heating cooker installed on a counter in a kitchen. The induction heating cooker cools a casing having a top panel on the upper surface, an induction heating coil provided in the upper part of the casing, an inverter circuit that supplies a high frequency current to the induction heating coil in the casing, and an inverter circuit. It is equipped with a cooling fan. An air suction port is formed in the front portion of the bottom wall of the casing, and legs are provided at four corners of the bottom portion of the casing to separate the bottom wall from an installation surface such as a counter. Further, an exhaust port is formed on the rear wall of the casing, and an exhaust passage case for guiding the exhaust from the exhaust port to the upper side of the casing is provided at the rear portion of the casing so as to project upward.

In this induction heating cooker, a cooling fan is also operated when a high-frequency current is supplied to the induction heating coil by an inverter circuit to heat the cooking utensil, and the air under the casing is in the front part of the bottom wall. It is introduced into the casing from the intake port, passes through the inverter circuit in the casing to cool it, and is discharged to the upper side of the casing from the exhaust port on the rear wall through the exhaust port of the exhaust passage case. In addition, the rear wall of the casing is provided with a partition plate portion extending downward to separate the lower side and the rear side of the casing, and the air discharged to the rear side of the casing is sucked into the bottom wall by the partition plate portion. I try not to be sucked in again.

Japanese Unexamined Patent Publication No. 2009-245931

In the induction heating cooker described in Patent Document 1 described above, an exhaust passage case for guiding the air discharged from the exhaust port on the rear wall to the upper side of the casing is provided at the rear portion of the casing. Induction heating cookers that eliminate the exhaust passage case have also been developed. In an induction heating cooker that eliminates the exhaust passage case, the exhaust discharged from the exhaust port on the rear wall of the casing is diffused by providing an appropriate distance between the rear wall of the casing and the wall surface of the kitchen. It can be prevented from wrapping around to the lower side. However, when installing such an induction cooker on a narrow kitchen counter, even if one side wall of the casing is separated from the wall surface of the kitchen, the rear wall of the casing and the other side wall are the wall surface of the kitchen. It was not possible to provide an appropriate distance between the casing, and the exhaust discharged from the exhaust port on the rear wall of the casing wraps around to the underside of the casing through one side of the casing, and the exhaust is again. In some cases, the suction port on the bottom wall of the casing was sucked into the casing, and the inverter circuit could not be cooled properly. According to the present invention, in an induction heating cooker installed on a kitchen counter or the like, the exhaust gas discharged from the exhaust port of the casing even if it is installed without a sufficient space between it and the wall surface of the kitchen or the like. The purpose is to make it difficult to be sucked in again from the suction port.

In order to solve the above problems, the present invention generates a casing that is installed on the installation surface and has a top plate on which the cooking container is placed on the upper surface, and an induced current for heating the cooking container in the casing. A gap is created between the installation surface and the bottom wall on the lower surface of the bottom wall of the casing, the induction heating coil to be used, the high frequency current supply circuit that supplies high frequency current to the induction heating coil, and the cooling fan that cools the high frequency current supply circuit. The bottom wall of the casing is provided with a leg for providing the outside air, and the rear wall of the casing is provided with an exhaust port for discharging the exhaust by the cooling fan. Is an induction heating cooker provided with a rear partition plate portion extending downward to prevent the exhaust discharged from the exhaust port from flowing from the rear side to the lower side of the casing, and is provided with at least one of the casings. The side part is characterized by having a side partition plate that extends downward and prevents the exhaust discharged from the exhaust port from flowing from the rear side of the casing to the lower side via one side. The present invention provides an induction heating cooker.

In the induction heating cooker configured as described above, even if one side wall of the casing can be separated from the wall surface of the kitchen, an appropriate distance between the rear wall surface of the casing and the other side wall is provided between the wall surface of the kitchen. When it cannot be installed in the provided state, the exhaust discharged from the exhaust port on the rear wall of the casing cannot escape upward and to the other and is sent to one side, but is sent to one side of the casing. The exhausted exhaust does not flow into the lower side of the casing due to the side partition plate portion provided on one side of the casing. As a result, the so-called short cycle in which the exhaust gas flows in again from the suction port can be prevented, and the high-frequency current supply circuit can be appropriately cooled.

In the induction heating cooker configured as described above, it is preferable that the legs are provided on the bottom wall of the casing so that the height can be adjusted, and the side partition plate portion is provided on the bottom of the casing so that the height can be adjusted. By doing so, even when the height of the legs is adjusted to change the height of the casing, the height of the side partition plate is also adjusted so that the exhaust flows in again from the suction port. The so-called short cycle can be prevented, and the high-frequency current supply circuit can be appropriately cooled.

It is a perspective view of the induction heating cooker of this invention. It is an exploded view which made the internal structure of FIG. 1 visible. It is a right side view of FIG. It is sectional drawing which shows the side bulkhead plate part. It is sectional drawing which shows the modification of the side partition plate part. It is sectional drawing which shows the modification of the side partition plate part which made height adjustable. It is sectional drawing (a) which shows the other modification of the side partition plate part which made height adjustable, and is the sectional view (b) when it was housed in a casing when the side partition plate part was not used. .. It is the bottom view when the suction port bulkhead plate part is adopted.

Hereinafter, an embodiment of the induction cooking device of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the induction heating cooker 10 is installed on an installation surface such as a counter in a kitchen to heat and cook ingredients placed in a cooking container such as a pot, and cooks the pot or the like. A high-frequency current is supplied to the casing 11 having a top plate 12 on which the container is placed on the upper surface, the induction heating coil 20 that generates an induced magnetic field to heat the cooking container in the casing 11, and the induction heating coil 20. It includes an inverter circuit (high-frequency current supply circuit) 21 and a cooling fan 22 for cooling the inverter circuit 21.

As shown in FIGS. 1 to 3, the casing 11 has a substantially rectangular parallelepiped shape including the top plate 12, and legs 13 are provided at the four corners of the lower surface of the bottom wall 11a of the casing 11. The leg portion 13 is intended to provide a gap through which air passes between the bottom wall 11a of the casing 11 and the installation surface. Further, the legs 13 are provided on the bottom of the casing 11 so that the height can be adjusted, and by adjusting the height of the legs 13, the height of the upper surface (top plate 12) of the casing 11 can be adjusted to the desired height of the cook. Alternatively, it can be adjusted to the same height as other adjacent devices.

As shown in FIG. 2, an outside air suction port 11a1 is formed in the front portion of the bottom wall 11a of the casing 11, and the suction port 11a1 is covered with a filter 14 so as to be ventilated. An exhaust port 11b1 for discharging air to the outside is formed on the rear wall 11b of the casing 11, and the exhaust port 11b1 is covered with a filter (not shown) so as to be ventilated.

As shown in FIGS. 1 to 3, the rear wall 11b of the casing 11 is provided with a rear partition plate portion 15 extending downward from the lower end, and the rear partition plate portion 15 is rear of the casing 11 from the exhaust port 11b1. It has a function of preventing the exhaust gas discharged to the side from flowing into the lower side of the casing 11. The right side wall (one side wall) 11d of the casing 11 is provided with a side partition plate portion 16 extending downward from the lower end, and the side partition plate portion 16 is provided with air on the right side (one side) of the casing 11. It has a function of preventing the inflow to the lower side of the casing 11.

An induction heating coil 20 is provided in the upper part of the casing 11. The induction heating coil 20 causes an eddy current to flow through the cooking utensil placed on the upper surface of the top plate 12 due to the influence of the induced magnetic field generated when a high frequency current is supplied, and when the eddy current flows through the cooking utensil. It is heated by the Joule heat generated by electric resistance. An inverter circuit (high frequency current supply circuit) 21 for supplying a high frequency current to the induction heating coil 20 is provided in the lower part of the casing 11. The inverter circuit 21 includes a large capacitor and a switching element for generating a high frequency current, and the inverter circuit 21 generates a large amount of heat from the large capacitor and the switching element when generating a high frequency current.

A cooling fan 22 is provided on the front side of the inverter circuit 21 at the front portion in the casing 11, and the cooling fan 22 is for cooling the inverter circuit 21 that generates heat in the casing 11. As shown by the arrow in FIG. 2, the cooling fan 22 introduces the outside air on the lower side of the casing 11 from the suction port 11a1 to the front part in the casing 11, and sends the outside air from the front part in the casing 11 to the rear part. It is passed through the circuit 21 to be cooled, and exhaust is discharged from the exhaust port 11b1 of the rear wall 11b of the casing 11 to the rear side of the casing 11.

A temperature sensor (not shown) is provided around the inverter circuit 21 in the casing 11, and the temperature inside the casing 11 is detected by the temperature sensor. This temperature sensor is provided to prevent the inverter circuit 21 from being overheated due to heat generation. When the overheated state is detected by the temperature sensor, the power supply to the inverter circuit 21 is controlled to be stopped.

An operation panel 17 is provided on the front wall 11c of the casing 11, and a high-frequency current is supplied from the inverter circuit 21 to the induction heating coil 20 by the operation of the operation panel 17, and the cooking utensil on the upper surface of the top plate 12 is heated. .. Further, when a high frequency current is supplied from the inverter circuit 21 to the induction heating coil 20 by operating the operation panel 17, the cooling fan 22 operates to cool the inverter circuit 21.

When the induction cooker 10 configured as described above is installed on an installation surface such as a counter in a narrow kitchen, even if the right side of the casing 11 is sufficiently separated from the wall surface of the kitchen, the rear wall 11b of the casing 11 and the rear wall 11b of the casing 11 It may not be possible to provide a sufficient distance between the left side wall (the other side wall) 11e and the wall surface of the kitchen. When the induction cooker 10 is installed in this way, the exhaust gas discharged from the exhaust port 11b1 of the rear wall 11b of the casing 11 cannot escape to the upper and lower sides and the left side of the casing 11, and is sent only to the right side of the casing 11. Will be done.

The induction heating cooker 10 extends downward to the right side portion (at least one side portion) of the casing 11, and the exhaust gas discharged from the exhaust port 11b1 of the rear wall 11b of the casing 11 is the rear side of the casing 11. It is provided with a side partition plate portion 16 that prevents the exhaust gas from flowing downward from the side via the right side. As described above, even if the exhaust gas is sent to the right side of the casing 11, the sent exhaust gas is prevented from flowing into the lower side of the casing 11 by the side partition plate portion 16. As a result, the so-called short cycle in which the exhaust gas is introduced into the casing 11 again from the suction port 11a1 can be prevented, and the inverter circuit 21 can be appropriately cooled.

As shown in FIG. 4, the side partition wall plate portion 16 described above may have a sheet metal member having an inverted L-shaped cross section fixed to the right side wall 11d (or bottom wall 11a) with screws or the like, or is shown in FIG. As described above, the lower end of the right side wall 11d may be extended. Further, as shown in FIG. 6, the height of the side partition plate portion 16 may be adjustable in correspondence with the height of the leg portion 13 being adjustable. In this case, a slit 11a2 extending in the front-rear direction is formed on the right side of the bottom wall 11a, and a side partition plate portion 16 made of a sheet metal member having an inverted L-shaped cross section is inserted into the slit 11a2 so as to be movable up and down. The height of the partition plate portion 16 can be adjusted. Further, in another modification in which the height of the side partition plate portion 16 is adjustable, as shown in FIG. 7, the side partition plate portion 16 having an L-shaped cross section is moved back and forth to the right side portion of the bottom wall 11a. When it is not necessary to use the side partition plate portion 16 by inserting it into the extending slit 11a2 so as to be movable up and down, the side partition plate portion 16 is lifted upward and the lower portion of the side partition plate portion 16 is the bottom wall 11a. Fix it with a screw or the like. As described above, various examples can be adopted as the side partition plate portion 16.

In the above embodiment, in order to cope with the case where the induction heating cooker 10 is arranged so that the left side wall 11e and the rear wall 11b of the casing 11 are arranged without a sufficient gap between the wall surface of the kitchen or the like. , The side partition plate portion 16 is provided on the right side portion of the casing 11, but the present invention is not limited to this, and the induction heating cooker 10 is provided on the right side wall 11d and the rear wall 11b of the casing 11. The side partition plate portion 16 may be provided on the left side portion of the casing 11 in order to cope with the case where the and is arranged without providing a sufficient gap with the wall surface of the kitchen or the like. Further, by providing the side partition plate portions 16 on the left and right side portions of the casing 11, the right side wall 11d and the rear wall 11b of the casing 11 are arranged close to the wall surface of the kitchen, and the left side wall 11e of the casing 11 The rear wall 11b may be designed so as to be compatible with both the case where the rear wall 11b is arranged close to the wall surface of the kitchen.

Next, an embodiment in which the suction port partition plate portion 18 is adopted instead of the side partition plate portion 16 described above will be described. As shown in FIG. 8, the induction heating cooker 10 of this embodiment extends downward on the lower surface of the bottom wall 11a of the casing 11 and surrounds the suction port partition wall plate portion excluding the front side of the suction port 11a1. It has 18. The suction port partition wall plate portion 18 includes a rear side plate portion 18a that covers the rear side of the suction port 11a1, a right side plate portion 18b that covers the right side, and a left side plate portion 18c that covers the left side, and covers other than the front side of the suction port 11a1. I have to.

Even in the induction heating cooker 10 that employs the suction port partition wall plate portion 18, even if the right side (or left side) of the casing 11 is sufficiently separated from the wall surface of the kitchen, the rear wall 11b and the left side wall of the casing 11 In some cases, the 11e (or right side wall 11d) and the rear wall 11b cannot be sufficiently spaced from the kitchen wall surface. When the induction cooker 10 is installed in this way, the exhaust gas discharged from the exhaust port 11b1 of the rear wall 11b of the casing 11 cannot escape to the upper and lower sides and the left side (or right side) of the casing 11, and the casing 11 It will be sent only to the right side (or left side).

The induction heating cooker 10 is provided with a suction port partition wall plate portion 18 extending downward on the lower surface of the bottom wall 11a of the casing 11 and surrounding the periphery excluding the front side of the suction port 11a1. As described above, the exhaust gas flows into the lower side of the casing 11 through the right side (or left side) of the casing 11, but the exhaust gas flowing into the lower side of the casing is introduced into the suction port 11a1 of the casing 11 by the suction port partition wall plate portion 18. Will not be done. The suction port partition wall plate portion 18 may also use a sheet metal member having an inverted L-shaped cross section as in the side partition wall plate portion 16 shown in FIG. 4, and is shown in FIGS. 6 and 7. The height may be adjustable as described above.

10 ... Induction heating cooker, 11 ... Casing, 11a ... Bottom wall, 11a1 ... Suction port, 11b ... Rear wall, 11b1 ... Exhaust port, 20 ... Induction heating coil, 21 ... High frequency current supply circuit (inverter circuit), 22 ... cooling fan.

Claims (2)

A casing that is installed on the installation surface and has a top plate on the upper surface on which the cooking container is placed.
An induction heating coil that generates an inductive magnetic field to heat the cooking container in the casing,
A high-frequency current supply circuit that supplies a high-frequency current to the induction heating coil,
A cooling fan that cools the high-frequency current supply circuit,
The lower surface of the bottom wall of the casing is provided with a leg portion for providing a gap between the installation surface and the bottom wall.
The bottom wall of the casing is formed with a suction port for sucking in outside air by the cooling fan, and the rear wall of the casing is formed with an exhaust port for exhausting the exhaust gas by the cooling fan, and the rear part of the casing is on the lower side. An induction heating cooker provided with a rear partition plate portion that extends and prevents exhaust gas discharged from the exhaust port from flowing from the rear side to the lower side of the casing.
A side partition plate portion that extends downward to at least one side of the casing to prevent exhaust gas discharged from the exhaust port from flowing downward from the rear side of the casing via the side. An induction heating cooker characterized by being equipped with. In the induction heating cooker according to claim 1 ,
The legs are provided on the bottom wall of the casing with adjustable height.
An induction heating cooker characterized in that the side partition plate portion is provided at the bottom of the casing so that the height can be adjusted.

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