JPH1187039A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker that is equipped with multiple induction heating coils and a inverter unit to control them in a case and is capable of cooling the inverter unit by one motor and preventing the exhaust air for cooling the inverter from giving an uncomfortable feeling to a user to the utmost. SOLUTION: In a case 26 in which two induction heating coils 27, 28 and an inverter unit 30 to control them are installed, a fan casing 36 in which a cooling fan 37 is received and a cooling duct 35 are installed. When the cooling fan 37 is rotated with a fan motor 38, the external air is sucked into the fan casing 36 from an inlet port 46 located at the right-hand rear side and the air flows into the inverter unit 30 through the cooling duct 35 to cool it; the air after cooling it is exhausted mainly from a back exhaust port 51 located at the left-hand rear side through an exhaust hole 47 to the out side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device provided with a plurality of induction heating coils in a case as a heat source and an inverter unit for controlling the plurality of induction heating coils.

[0002]

In recent years, as for a cooking device for a kitchen, an induction heating coil which does not use a fire as a heat source has been widely used for the purpose of improving fire safety. FIGS. 6 and 7 show a conventional configuration of this type of heating cooker.

[0003] The heating cooker 1 comprises an upper unit 2 and a lower unit 3 disposed below the upper unit 2. Case 4 of upper unit 2
, A top plate 5 is provided on the upper surface, and 2
An induction heating coil 6 at the mouth, two sets of inverter units 7 for controlling these induction heating coils 6, two cooling ducts 8 provided corresponding to each of the inverter units 7, and each cooling duct 8 , Two cooling motors 10 (only one of which is shown in FIG. 7), and two cooling fans 10
And a central heater 11 and the like. The lower unit 3 is provided with a roaster 12, and the roaster 12 is arranged on the left side.

The case 4 of the upper unit 2
In the rear part, two intake ports 13 communicating with each cooling duct 7 are provided.
One roaster exhaust port 14 is provided between the intake ports 13 and 13.

In the above configuration, when the cooling fan 10 is driven to rotate by the respective fan motors 9, the blowing action of the cooling fan 10 causes the cooling fan 10 to rotate as shown by arrows a.
External air is sucked into the cooling duct 8 from the rear intake port 13, the corresponding inverter unit 7 is cooled by the air passing through the cooling duct 8, and the cooled air is discharged from the exhaust port 4 a on the front of the case 4. It is discharged outside.

On the other hand, the exhaust air from the roaster 12 is exhausted from the roaster exhaust port 14 at the rear (see arrow B in FIG. 6). There is no cooling fan on the roaster 12 side, and exhaust from the roaster 12 is performed by so-called natural exhaust.

According to the above-described configuration, each inverter unit 7 can be cooled by flowing cooling air of the cooling fan 10 through each inverter unit 7 having a heat-generating component.

However, the above-described conventional configuration has the following disadvantages. First, there are two inverter units 7 corresponding to the two induction heating coils 6, and two sets of cooling devices for cooling the inverter units 7 are required corresponding to each inverter unit 7. Cost increases. In addition, since the exhaust gas that has cooled each inverter unit 7 blows forward from the exhaust port 4a on the front surface, the exhaust gas may hit the user and give the user discomfort.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a case where a plurality of induction heating coils and an inverter unit for controlling the same are provided in a case. An object of the present invention is to provide a heating cooker that can be cooled by a fan motor, can reduce costs, and can prevent a user from feeling uncomfortable with exhaust air that has cooled the inverter unit.

[0010]

Means for Solving the Problems A cooking device according to the present invention comprises:
In order to achieve the above object, a case in which a top plate is disposed on an upper surface, a plurality of induction heating coils disposed in the case, and the plurality of induction heating coils disposed in the case An inverter unit for controlling the air conditioner, a cooling duct disposed in the case, an intake port provided on one side of the rear part of the case, and a side provided with the intake port on the rear part of the case. Is an exhaust port provided on the opposite side, one fan motor,
A cooling fan rotated by the fan motor, and based on a blowing action of the cooling fan rotated by the fan motor, sucks external air into the case from the intake port and removes the sucked air. The inverter unit is cooled through the cooling duct by flowing through the cooling duct, and the cooled air is discharged to the outside from the exhaust port.

In the above configuration, in a case where a plurality of induction heating coils and an inverter unit for controlling these are provided in the case, the inverter unit can be cooled by one fan motor. In addition, since the exhaust port through which the air that has cooled the inverter unit is exhausted is located at the rear of the case, it is possible to prevent the exhaust from hitting the user as much as possible.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, FIG. 1 shows a schematic configuration of a state in which a heating cooker 21 of the present invention is incorporated in a cabinet 22 of a system kitchen. As shown in FIG. 4, the heating cooker 21 includes an upper unit 23 and a lower unit 24 disposed below the upper unit 23.

The upper unit 24 has a rectangular case 26 having a top plate 25 disposed on the upper surface.
Inside the case 26, two induction heating coils 2
7, 28 are arranged side by side on the left and right of the front part,
One central heater 29 is arranged at the center of the rear part.
The induction heating coils 27 and 28 and the central heater 29 are arranged near the lower surface of the top plate 25.

An inverter unit 30 for controlling the two induction heating coils 27 and 28 is provided in a lower part of the case 26 on the right side of the front part, as shown in FIGS. ing. The inverter units 30 are collectively provided on a single printed circuit board 31, and four heat dissipating members 32 of the inverter unit 30 are provided on the printed circuit board 31 in this case.

A cooling duct 35 is provided so as to cover these four heat radiating members 32 from above. A fan casing 36 is integrally provided at the right rear portion of the cooling duct 35, and the cooling duct 35 communicates with a discharge port 36 a of the fan casing 36. The left side of the cooling duct 35 is open. The fan casing 36 is disposed at the right rear portion in the case 26, and a cooling fan 37 composed of a centrifugal fan is disposed in the fan casing 36. This cooling fan 37 is rotated by a fan motor 38 attached to the bottom of the case 26. Here, the fan casing 36, the cooling fan 37, and the fan motor 38
The fan device 39 is configured.

A suction port 36b of the fan casing 36 is formed on the upper surface, and a suction port cover 40 made of synthetic resin is provided on the suction port 36b so as to cover the suction port 36b from above. An intake duct 41 is provided at the right rear of the case 26, and an upper portion of the intake duct 41 is opened upward. The intake duct 41 communicates with the intake port 36b via the inside of the intake port cover 40.

As shown also in FIG. 4, a top plate frame 45 is provided on the upper portion of the case 26 so as to surround the top plate 25. Inlet 4 communicating with duct 41
6 is formed, and an exhaust port 47 is formed on the left part.
A partition 48 is formed between the intake port 46 and the exhaust port 47 (see FIG. 5). These intake ports 46,
An intake / exhaust cover 49 is provided so as to cover the exhaust port 47 and the partition 48 from above.

On the left rear surface of the case 26, there is formed a rear exhaust port 51 communicating with the exhaust port 47. On the left front surface of the case 26, there is formed a front exhaust port 52 composed of a number of small holes. Have been. In this case, the opening area of the rear outlet 51 is set to be larger than the opening area of the front outlet 52. An outer frame 53 (see FIG. 2) is provided outside the case 26 so as to surround the case 26.
The air is not directly exhausted from the front outlet 52 to the front.

On the other hand, the lower unit 24 is provided with a roaster 56 on the left side of the outer case 55.
The roaster 56 has a configuration in which a heater (not shown) is provided in a roaster case 57, and a door 58 is provided on the front surface. An L-shaped roaster exhaust duct 59 communicating with the inside of the roaster case 57 is connected to a rear left portion of the roaster case 57. The upper part of the roaster exhaust duct 59 is open upward, and this is used as a roaster exhaust port 60. The roaster exhaust port 60 is disposed on the left rear side of the exhaust port 47.

Rising section 5 of roaster exhaust duct 59
A gap is formed between the front surface of the case 9a and the rear surface of the case 26 of the upper unit 23, and the rear outlet 51
Is discharged from the exhaust port 47 to the outside through the gap. Lower unit 2
An operation panel 61 is provided on the right side of the front surface of 4.

In the above configuration, the induction heating coils 27,
When one or both of the 28 are used, the fan motor 38 is energized. When the cooling fan 37 is rotated by the fan motor 38, external air flows through the intake duct 41 from the intake port 46 as shown by an arrow A in FIG. Is sucked into the fan casing 36 through the suction port cover 40 of the fan casing 36, and the air is discharged to the discharge port 3 of the fan casing 36.
6a is discharged into the cooling duct 35. The air discharged into the cooling duct 35 flows through the cooling duct 35 while cooling the inverter unit 30 as shown by an arrow B in FIG. 3, and is discharged into the case 26 from the left opening of the cooling duct 35. Is done.

The air discharged from the opening on the left side of the cooling duct 35 flows separately into the rear side and the front side. In this case, the rear discharge port 51 is set to be larger than the opening area of the front discharge port 52 and has a lower ventilation resistance than the front discharge port 52 side, so that the air discharged from the cooling duct 35 is mainly As shown by an arrow C in FIG. 3, the air exits the case 26 through the rear exhaust port 51 and is exhausted from the exhaust port 47 to the outside. In addition, as shown by an arrow D in FIG.
The case 26 is discharged from the front outlet 52 to the outside of the case 26. An outer frame 53 is provided in front of the front outlet 52, and the front outlet 52 is provided.
There is no direct exhaust from the front.

On the other hand, the exhaust gas discharged from the roaster 56 passes through the roaster exhaust duct 59 at the rear, and is exhausted to the outside through the roaster exhaust port 60 (see arrow E in FIG. 4).

According to the above embodiment, the following effects can be obtained. First, since the inverter unit 30 disposed in the upper unit 23 is cooled via the cooling duct 35 by the air sucked by the cooling fan 37 rotated by the fan motor 38, the upper unit in the case 26 is cooled. 23 is provided with two induction heating coils 27 and 28 and an inverter unit 30 for controlling them.
0 can be cooled by one fan motor 38.

Therefore, unlike the conventional configuration in which there are two inverter units corresponding to the two induction heating coils and a cooling device is required for each of these inverter units on a one-to-one basis, one inverter unit is required. Since the fan motor 38 can be used, the cost can be reduced.

Further, since the exhaust port 47 through which the air that has cooled the inverter unit 30 is exhausted is located at the rear of the case 26, it is possible to prevent the exhaust from hitting the user as much as possible. Giving can be prevented as much as possible.

Since the roaster 56 is provided in the lower unit 24 and is disposed on the left side opposite to the side on which the fan motor 38 is provided, the heat of the roaster 56, whose temperature becomes relatively high, causes the fan device to rotate. It is possible to prevent the temperature on the 39 side from rising as much as possible, and thus to prevent the temperature of the cooling air for cooling the inverter unit 30 from becoming high as much as possible. The inverter unit 30
It is possible to prevent the cooling performance of the device from lowering as much as possible.

Since the roaster exhaust port 60 is disposed on the left side of the rear part of the case 26 opposite to the side where the intake port 46 is provided, and is separated from the intake port 46, the exhaust from the roaster exhaust port 60 is performed. It is possible to prevent a so-called short circuit in which the relatively high-temperature exhaust gas is sucked from the intake port 46 as it is, thereby preventing the cooling performance of the inverter unit 30 from being lowered. .

In the rear part of the case 26, a partition 48 is provided between the intake port 46, the exhaust port 47 and the roaster exhaust port 60, so that the air is discharged from the exhaust port 47 and the roaster exhaust port 60. It is possible to more reliably prevent the occurrence of a short circuit in which exhaust gas is directly sucked through the intake port 46.

Since the fan casing 36 of the fan device 39 and the cooling duct 35 are integrally formed, the number of parts is reduced, the assembly is easy, and the cost of the parts can be reduced. 30
Can be efficiently cooled.

The suction port 36b of the fan casing 36
A suction port cover 40 for communicating the suction port 36b with the outside.
Is provided, the outside air is blown into the fan casing 36.
Good guidance inside. Further, since the suction port cover 40 is made of synthetic resin, it does not generate heat when the induction heating coils 27 and 28 are used, and has heat insulating properties. Rise of the temperature of the inverter unit 30 can be prevented as much as possible, thereby also preventing the cooling performance of the inverter unit 30 from being lowered.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. Three or more induction heating coils may be used, and the inverter unit may be divided into two or more.

[0033]

As is clear from the above description, according to the present invention, the following effects can be obtained. Claim 1
According to the heating cooker of the present invention, in a case where a plurality of induction heating coils and an inverter unit for controlling them are provided in a case, the inverter unit can be cooled by one fan motor, and the cost can be reduced. Will be able to In addition, since the exhaust port from which the air that has cooled the inverter unit is exhausted is located at the rear of the case,
It is possible to prevent the user from feeling uncomfortable with the exhaust air that has cooled the inverter unit.

According to the heating cooker of the second aspect, the roaster disposed below the case is disposed on the side opposite to the side on which the fan motor is disposed, so that the temperature is relatively low. An increase in the temperature of the fan motor due to the increased heat of the roaster can be prevented as much as possible, and a decrease in the cooling performance of the inverter unit can be prevented as much as possible.

According to the third aspect of the present invention, the roaster exhaust port is disposed on the side of the rear part of the case opposite to the side where the intake port is provided, and is separated from the intake port. Therefore, relatively high-temperature exhaust gas discharged from the roaster exhaust port is directly sucked from the intake port,
The occurrence of a so-called short circuit can be prevented as much as possible, and the deterioration of the cooling performance for the inverter unit can be prevented as much as possible.

According to the heating cooker of the fourth aspect, it is possible to more reliably prevent the occurrence of a short circuit in which the exhaust gas discharged from the exhaust port is directly sucked through the intake port.

According to the cooking device of the fifth aspect, by integrating the fan casing and the cooling duct, the number of parts is reduced, the assembly becomes easy, and the cost of the parts can be reduced. In addition, the inverter unit can be efficiently cooled.

According to the seventh aspect of the present invention, by providing the suction port cover for connecting the suction port with the outside at the suction port of the fan casing, the outside air can be guided well into the fan casing. Can be. Further, since the inlet cover is made of synthetic resin, no heat is generated when the induction heating coil is used.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional side view.

FIG. 3 is a cutaway plan view for explaining the flow of wind.

FIG. 4 is a perspective view of an upper unit and a lower unit in a state where an intake / exhaust cover is separated.

FIG. 5 is a longitudinal sectional front view of a main part.

FIG. 6 is a diagram corresponding to FIG. 3 showing a conventional configuration.

FIG. 7 is a longitudinal side view.

[Explanation of symbols]

21 is a heating cooker, 23 is an upper unit, 24 is a lower unit, 25 is a top plate, 26 is a case, 27,
28 is an induction heating coil, 30 is an inverter unit, 3
5 is a cooling duct, 36 is a fan casing, 36a is a discharge port, 36b is a suction port, 37 is a cooling fan, 38 is a fan motor, 39 is a fan device, 40 is a suction port cover,
6 is an intake port, 47 is an exhaust port, 48 is a partition, 49 is an intake / exhaust cover, 51 is a rear exhaust port, 52 is a front exhaust port, 5
6 is a roaster, 59 is a roaster exhaust duct, and 60 is a roaster exhaust port.

Claims (7)

[Claims] 1. A case in which a top plate is disposed on an upper surface, a plurality of induction heating coils disposed in the case, and an inverter disposed in the case and controlling the plurality of induction heating coils A unit, a cooling duct disposed in the case, an air inlet provided on one side of a rear portion of the case, and an air inlet provided on a rear portion of the case opposite to a side provided with the air inlet. An exhaust port provided on a side portion, one fan motor, and a cooling fan rotated by the fan motor, wherein external air is blown based on a blowing action of the cooling fan rotated by the fan motor. The air is sucked into the case from the air inlet, and the sucked air is passed through the cooling duct to the inverter unit to cool the inverter unit. Cooking device is characterized in that the arrangement for discharge from the exhaust port to the outside. 2. The heating device according to claim 1, further comprising a roaster disposed below the case, wherein the roaster is disposed on a side opposite to a side on which the fan motor is disposed. Cooking device. 3. The roaster exhaust port for discharging exhaust air from the roaster is provided at a rear side of the case opposite to the side where the intake port is provided.
The heating cooker as described. 4. The air intake / exhaust cover according to claim 1, wherein a partition portion is provided between the intake port and the exhaust port, and an intake / exhaust cover is provided above the intake port, the exhaust port, and the partition portion. Cooking cooker. 5. The cooling fan according to claim 1, wherein the cooling duct and the fan casing surrounding the cooling fan are integrated.
The heating cooker as described. 6. A rear discharge port communicating with an exhaust port on a rear surface of the case, a front discharge port on a front surface of the case, and an opening area of the rear discharge port is larger than an opening area of the front discharge port. The heating cooker according to claim 1, wherein the heating cooker is set so as to be: 7. The cooking device according to claim 1, wherein a suction port cover made of a synthetic resin is provided at a suction port of a fan casing surrounding the cooling fan so as to communicate the suction port with the outside.