JP6345025B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker incorporating a roaster.

  In this type of induction heating cooker, a main body cooling air passage is provided in a main body formed by a top plate and an outer casing, and a plurality of induction heating coils and an electric current are supplied to the induction heating coil in the main body cooling air passage. A drive circuit board to be supplied, a cooling fan for cooling the induction heating coil and the drive circuit board, and a roaster unit are provided. In addition, a roaster air passage leading from the inside of the roaster compartment to the outside is provided between the inside of the roaster compartment and the outer casing constituting the main body, and oil smoke generated in the roaster compartment is discharged outside the main body in the roaster air passage. A suction fan is provided.

  Moreover, in such a thing, the suction motor which drives a suction fan is arrange | positioned at the main body cooling air path side by a cooling fan, and cools a suction motor with the air after cooling a heating coil or a drive circuit board, or cooling There is one in which the cooling air of the fan is diverted without passing through the air passage in which the heating coil and the drive circuit board are present, and is blown to the suction motor to be cooled (for example, see Patent Document 1).

Japanese Patent No. 3664025 (Claims 1, 2, 9 and 10)

  However, in the configuration in which the suction motor is cooled with air after cooling the heating coil and the drive circuit board, the cooling efficiency is poor.

  In addition, in the configuration in which the cooling air from the cooling fan is diverted without passing through the air passage where the heating coil and the drive circuit board are present and blown to the suction motor to be cooled, the amount of cooling air to the heating coil and the drive circuit is reduced. .

  The present invention has been made to solve the above-described problems, and reduces the amount of cooling air supplied to an induction heating coil and a drive circuit board by using a suction motor of a suction fan that circulates or exhausts air in a roaster cabinet. It aims at providing the induction heating cooking appliance which can be cooled with the air of comparatively low temperature outside a main body.

The induction heating cooker according to the present invention has a main body formed of a top plate and an outer casing, and a first air inlet is formed on the back surface of the main body, and on the back side of the upper portion of the main body. A first exhaust port is formed, and an induction heating coil and a drive circuit for supplying current to the induction heating coil in the main body cooling air passage from the first intake port to the first exhaust port below the top plate A cooling fan for cooling the substrate, the induction heating coil and the drive circuit board, and a roaster unit are provided. A roaster air passage is provided, a suction fan that circulates or exhausts the air in the roaster cabinet is provided in the roaster air passage, and a suction motor that drives the suction fan is arranged outside the roaster air passage. And, between the outer casing constituting the roaster and body, provided a suction motor cooling air path communicating to the outside is composed of a box-shaped member and the lid member made independent from the main cooling air passage, a box-shaped The member forms a first opening and a second opening. The first opening is opposed to a second air inlet formed on the back surface of the main body on the same plane as the first air inlet, and the second opening. The opening is opposed to a second exhaust port formed on the back surface of the main body on the same plane as the second intake port, and air outside the main body is sucked into the suction motor cooling air passage from the second intake port. through the suction motor cooling air path, and a suction motor cooling fan for discharging from the second outlet to the outside of the body is obtained by arranging the suction motor.

  In the induction heating cooker of the present invention, since the suction motor cooling air passage is independent of the main body cooling air passage, a relatively low temperature outside the main body without reducing the amount of cooling air to the induction heating coil and the drive circuit board. The suction motor can be cooled with air.

It is a perspective view which removes and shows the top plate and induction heating coil of the induction heating cooking appliance which concerns on embodiment of this invention. It is a top view which removes and shows the top plate and induction heating coil of the induction heating cooking appliance which concerns on embodiment of this invention. It is a top view which removes the top plate and induction heating coil of the induction heating cooking appliance which concerns on embodiment of this invention, and shows the positional relationship of a 1st exhaust port and a suction motor cooling air path. It is a schematic sectional drawing of the side view of the 2nd inlet port part of the roaster part of the induction heating cooking appliance which concerns on embodiment of this invention. It is a schematic sectional drawing of the side view of the 2nd exhaust port site | part of the roaster part of the induction heating cooking appliance which concerns on embodiment of this invention. It is a disassembled perspective view which shows the convection unit of the induction heating cooking appliance which concerns on embodiment of this invention from the front. It is a perspective view of the heat shield of the convection unit of the induction heating cooking appliance which concerns on embodiment of this invention. It is a disassembled perspective view which shows the convection unit of the induction heating cooking appliance which concerns on embodiment of this invention from back. It is a disassembled perspective view which shows the suction motor cooling air path of the induction heating cooking appliance which concerns on embodiment of this invention from the front. It is a perspective view which shows the suction motor cooling air path of the induction heating cooking appliance which concerns on embodiment of this invention from the front. It is a disassembled perspective view which shows the suction motor cooling air path of the induction heating cooking appliance which concerns on embodiment of this invention from back. It is a perspective view which shows the suction motor cooling air path of the induction heating cooking appliance which concerns on embodiment of this invention from back. It is a top view which expands and shows the convection unit part of the induction heating cooking appliance which concerns on embodiment of this invention. It is AA arrow sectional drawing of FIG. It is a top view which expands and shows the convection unit part of the induction heating cooking appliance which concerns on embodiment of this invention. FIG. 16 is a cross-sectional view taken along line B-B in FIG. 15. It is a top view which expands and shows the convection unit part of the induction heating cooking appliance which concerns on embodiment of this invention. It is CC sectional view taken on the line of FIG.

The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a perspective view showing the induction heating cooker according to the embodiment of the present invention with the top plate and the induction heating coil removed. FIG. 2 is a plan view showing the induction heating cooker according to the embodiment of the present invention with the top plate and the induction heating coil removed. FIG. 3 is a plan view showing the positional relationship between the first exhaust port and the suction motor cooling air passage by removing the top plate and the induction heating coil of the induction heating cooker according to the embodiment of the present invention. FIG. 4 is a schematic cross-sectional view in side view of the second air inlet portion of the roaster portion of the induction heating cooker according to the embodiment of the present invention. FIG. 5 is a schematic cross-sectional view in side view of the second exhaust port portion of the roaster portion of the induction heating cooker according to the embodiment of the present invention.

  As shown in FIGS. 1 to 5, the induction heating cooker according to the embodiment of the present invention is configured by punching metal on the back side of the main body 3 formed by the top plate 1 and the outer casing 2. A first intake port 4 and a first exhaust port 5 (FIG. 3) are provided. An induction heating coil 6 and a drive circuit board 7 for supplying current to the induction heating coil 6 are provided in the main body cooling air passage 10 from the first intake port 4 to the first exhaust port 5 below the top plate 1. And the cooling fan (sirocco fan) 8 and the roaster part 9 which cool the induction heating coil 6 and the drive circuit board 7 are provided.

  A suction duct 21 is provided on the roaster unit 9, and a convection unit 40 is provided on the back of the roaster unit 9. The roaster compartment 9a, the suction duct 21 and the convection unit 40 of the roaster section 9 communicate with each other, and constitute a roaster air passage 20 that communicates with the outside from the roaster compartment 9a. Specifically, the front lower surface 21a of the suction duct 21 communicates with the roaster interior 9a, and the rear end 21b of the suction duct 21 communicates with the central portion 20a of the convection unit 40. Further, the lower front side 20b of the convection unit 40 communicates with the roaster cabinet 9a. A suction fan 43 (FIG. 5) that circulates or exhausts the air in the roaster cabinet 9a is provided in the roaster air passage 20. Further, a suction motor 44 that drives the suction fan 43 is disposed outside the roaster ventilation path 20.

  In addition, a suction motor cooling air passage 30 communicating with the outside is provided between the roaster unit 9 and the outer casing 2 constituting the main body 3 independently of the main body cooling air passage 10. A suction motor 44 is disposed in the air passage 30. A suction motor cooling fan 31 (FIG. 4) is disposed in the suction motor cooling air passage 30. The suction motor cooling fan 31 sucks air outside the main body from a second air inlet 32 formed of punching metal on the back surface 2a of the outer casing 2 and passes through the suction motor cooling air passage 30 to form a second air outlet 33 (FIG. 5). ) From the main body. Further, the suction motor cooling fan 31 is disposed away from the surface of the punching metal that becomes the second intake port 32, thereby reducing pressure loss and noise.

  Here, the second exhaust port 33 is configured by a “garbage” in which blind blades 33a are attached in parallel downward. This is because the discharge direction of the cooling air is directed downward so that the air can be exhausted in a direction different from the direction in which the first intake port 4 and the second intake port 32 exist. Thereby, it is possible to prevent warm air discharged from the suction motor cooling air passage 30 from being sucked into the cooling fan 8 and the suction motor cooling fan 31 again. Note that the second exhaust port 33 does not necessarily need to be configured by “brutish” but may be configured by punching metal.

  The suction motor cooling air passage 30 is disposed below the first exhaust port 5 of the main body 3. For this reason, even if a foreign object falls from the upper surface of the main body (first exhaust port 5), it can be received by the upper surface of the suction motor cooling air passage 30 in a reachable range (a range in which the foreign object is visible). Can be removed.

Next, the convection unit 40 will be described in more detail based on FIGS. 6 to 8 with reference to FIGS. FIG. 6 is an exploded perspective view showing the convection unit of the induction heating cooker according to the embodiment of the present invention from the front. FIG. 7 is a perspective view of the heat shield plate of the convection unit of the induction cooking device according to the embodiment of the present invention. FIG. 8 is an exploded perspective view showing the convection unit of the induction heating cooker according to the embodiment of the present invention from the rear.
As shown in FIGS. 4 to 8, the convection unit 40 moves the air in the roaster cabinet 9 a from the front lower surface 21 a of the suction duct 21 through the suction duct 21 to the inside of the convection unit 40. In this case, the heated air is supplied from the lower front side 20b of the convection unit 40 to the roaster cabinet 9a again. In the convection unit 40, a heating chamber 42 having an accommodating space is formed by a fan casing 41 that forms the roaster ventilation path 20. In the heating chamber 42, a suction fan 43 serving as a convection fan and a convection heater 45 are accommodated. The suction fan 43 is a centrifugal fan, is fixed to the rotation shaft of the suction motor 44, and rotates by the operation of the suction motor 44. A roaster exhaust duct 48 is connected to the upper portion of the heating chamber 42. The inside of the heating chamber 42 and the roaster exhaust duct 48 communicate with each other.

  Further, a heat shield plate 47 is provided on the back surface of the roaster air passage 20, that is, the back surface of the fan casing 41 via a heat insulating material 46, and the heat shield plate 47 has a non-metallic member (heat conduction compared to iron or aluminum). A suction motor cooling air passage 30 composed of a member having a low rate, such as a plastic member, is attached. An air layer may be provided instead of the heat insulating material 46. As a result, heat from the roaster section is not transmitted to the air sucked by the suction motor cooling fan 31 through the wall of the suction motor cooling air passage 30, and the suction motor 44 can be cooled without increasing the temperature.

Next, the suction motor cooling air passage 30 will be described in further detail with reference to FIGS. 1 to 8 based on FIGS. FIG. 9 is an exploded perspective view showing the suction motor cooling air passage of the induction heating cooker according to the embodiment of the present invention from the front. FIG. 10 is a perspective view showing the suction motor cooling air passage of the induction heating cooker according to the embodiment of the present invention from the front. FIG. 11 is an exploded perspective view showing the suction motor cooling air passage of the induction heating cooker according to the embodiment of the present invention from the rear. FIG. 12 is a perspective view showing the suction motor cooling air passage of the induction heating cooker according to the embodiment of the present invention from the rear. FIG. 13 is an enlarged plan view showing the convection unit portion of the induction heating cooker according to the embodiment of the present invention. 14 is a cross-sectional view taken along line AA in FIG. FIG. 15 is an enlarged plan view showing a convection unit portion of the induction heating cooker according to the embodiment of the present invention. 16 is a cross-sectional view taken along line BB in FIG. FIG. 17 is an enlarged plan view showing a convection unit portion of the induction heating cooker according to the embodiment of the present invention. 18 is a cross-sectional view taken along the line CC of FIG.
As shown in FIGS. 9 to 14, the suction motor cooling air passage 30 closes the box-shaped member 34 in which the suction motor cooling fan 31 and the suction motor 44 are housed, and the front opening thereof, and is screwed. And a lid member 35. Among them, the box-shaped member 34 includes therein a first storage portion 34a in which the suction motor cooling fan 31 is stored, a second storage portion 34b in which the suction motor 44 is stored, a first storage portion 34a, and a second storage portion 34a. A communication portion 34c formed between the storage portion 34b and the storage portion 34b is provided. Further, the box-shaped member 34 has openings 34d, 34d, respectively, at portions facing the second intake port 32 and the second exhaust port 33 made of punching metal on the back surface 2a of the outer casing 2 on the box-shaped bottom surface. 34e is formed. Furthermore, the box-shaped member 34 is provided with a drain outlet 34g for draining water that has entered from the first exhaust outlet 5 (FIG. 3) at one corner of the upper face 34f, and the upper face 34f As shown in FIG. 14, it is configured to be inclined toward the drain outlet 34g. Thereby, even if water enters from the upper surface of the main body (first exhaust port 5), the water can be drained, and the entered water can be easily guided to the drain port 34g by the inclination of the upper surface 34f.

  Further, the cover member 35 of the suction motor cooling air passage 30 is provided with a through hole 35a of the rotation shaft of the suction motor 44 as shown in FIGS.

  Therefore, when the suction motor cooling fan 31 is driven, as shown in FIGS. 8 and 15 to 18, the air outside the main body from the second air inlet 32 formed of the punching metal on the back surface 2 a of the outer casing 2. Is sucked into the first storage part 34a in the suction motor cooling air passage 30 (FIGS. 8, 15, 16), flows from the first storage part 34a through the communication part 34c to the second storage part 34b, 2 After the suction motor 44 in the storage portion 34b is cooled, it is discharged from the second exhaust port 33 through the suction motor cooling air passage 30 to the outside of the main body (FIGS. 8, 17, and 18).

  As described above, in the induction heating cooker according to the embodiment of the present invention, the suction motor cooling air passage 30 is independent from the main body cooling air passage 10, so that the induction heating coil 6 and the drive circuit board 7 are cooled. Without reducing the air volume, the suction motor can be cooled with air at a relatively low temperature outside the main body.

  Further, the relatively high temperature air in the main body does not enter the suction motor cooling air passage 30.

  1 top plate, 2 outer casing, 2a rear surface, 3 main body, 4 first air inlet, 5 first air outlet, 6 induction heating coil, 7 drive circuit board, 8 cooling fan, 9 roaster section, 9a in roaster cabinet, DESCRIPTION OF SYMBOLS 10 Main body cooling air path, 20 Roaster ventilation path, 20a Center part, 20b Lower front side, 21 Suction duct, 21a Front lower surface, 21b Rear end, 30 Suction motor cooling air path, 31 Suction motor cooling fan, 32 2nd inlet port 33 Second exhaust port, 33a Blade plate, 34 Box-shaped member, 34a First storage portion, 34b Second storage portion, 34c Communication portion, 34d, 34e Opening, 34f Top surface, 34g Drain port, 35 Lid member, 35a Through Hole, 40 Convection unit, 41 Fan casing, 42 Heating chamber, 43 Suction fan, 44 Suction motor, 45 Conv Heater, 46 Heat insulating material, 47 Heat shield, 48 Roaster exhaust duct.

Claims (10)

Having a main body formed of a top plate and an outer casing;
A first intake port is formed on the back surface of the main body, and a first exhaust port is formed on the back side of the upper portion of the main body,
An induction heating coil, a drive circuit board that supplies current to the induction heating coil, and the induction heating are disposed in a main body cooling air passage from the first intake port to the first exhaust port below the top plate. A cooling fan for cooling the coil and the drive circuit board, and a roaster unit,
Between the inside of the roaster chamber of the roaster section and the outer casing constituting the main body, a roaster air passage leading to the outside from the inside of the roaster chamber is provided,
In the roaster air passage, a suction fan for circulating or exhausting the air in the roaster cabinet is provided, and a suction motor for driving the suction fan is disposed outside the roaster air passage,
Between the roaster portion and the outer casing constituting the main body, a suction motor cooling air passage configured by a box-shaped member and a lid member and leading to the outside is provided independently of the main body cooling air passage,
The box-shaped member forms a first opening and a second opening, and the first opening is opposed to a second air inlet formed on the back surface of the main body on the same plane as the first air inlet. And the second opening is opposed to a second exhaust port formed in the back surface of the main body on the same plane as the second intake port,
Wherein the suction motor cooling air path, and the intake air outside the body from said second air inlet, through the suction motor cooling air path, and a suction motor cooling fan that discharges from the second outlet to the outside of the body, wherein An induction heating cooker characterized by arranging a suction motor.   The induction heating cooker according to claim 1, wherein the suction motor cooling air passage is arranged below the first exhaust port of the main body. The induction heating cooker according to claim 2 , wherein a drainage port for draining water that has entered from the first exhaust port of the main body to the outside is provided at one corner of the upper surface of the box-shaped member . . The induction heating cooker according to claim 3 , wherein an upper surface of the box-shaped member is inclined toward the drain port.   The induction heating cooker according to any one of claims 1 to 4, wherein the suction motor cooling air passage is made of a non-metallic member. 6. A heat shield plate is provided between the back surface of the roaster air passage and the lid member, and the suction motor cooling air passage is attached to the heat shield plate. The induction heating cooker according to any one of the above.   The induction heating cooker according to claim 6, wherein an air layer is provided between the heat shield plate and the roaster air passage.   The induction heating cooker according to claim 6, wherein a heat insulating material is provided between the heat shield plate and the roaster air passage.   The second air inlet of the suction motor cooling air passage is formed with a plurality of holes formed in the back surface of the outer casing of the main body, and the suction motor cooling fan is disposed apart from the back surface. The induction heating cooker according to claim 1, wherein the induction heating cooker is used.   The second exhaust port of the suction motor cooling air passage is provided on the back surface of the outer casing of the main body and exhausts in a direction different from the direction in which the first intake port and the second intake port exist. It is comprised by these, The induction heating cooking appliance as described in any one of Claims 1-9 characterized by the above-mentioned.

Images