JPH0339215B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cooking device equipped with a heater.

Conventional Technology In recent years, in heating cooking devices using various heaters such as electric ovens and microwave ovens with an oven function, surface heaters have been introduced into the heating chamber, which has the advantage of increasing the effective volume in the heating chamber and making cleaning easier. An increasing number of devices are being installed on the ceiling or bottom of buildings.

A conventional heating cooking device with a surface heater of this type will be explained. FIG. 3 is a side sectional view of a conventional microwave oven equipped with a surface heater, and FIG. 4 is a partially cutaway plan sectional view of the same device. 1 is a heating chamber in which food is placed and cooked; 2 is an outer box that forms the outer shell of the device; 3 is installed on the upper surface of the ceiling of the heating chamber 1, and the food placed in the heating chamber 1 is heated from above. A lower heater 4 is installed at the bottom of the heating chamber 1 and heats the food from the bottom; 5 is an upper heater installed to cover the top of the upper heater 3;
6 is an exhaust hole, 7 is a door mounting plate to which the door is attached, 8 is a decorative board placed on the top of the door, 9 is a magnetron that generates high frequency waves, 1
0 is a cooling fan that cools magnetron 9, 11
12 is an air guide that guides cooling air from the cooling fan 10 into the heating chamber 1, and 12 is a control device that controls the heaters 3, 4 and the high frequency generator 9.

Problems to be Solved by the Invention However, such conventional heating cooking devices have the following problems.

When cooking with a microwave oven, air generated by the magnetron 9 and the cooling fan 10 of the control device 12 is directed into the heating chamber 1 by the air guide 11 in order to exhaust water vapor and gas from the food generated in the heating chamber 1. The wind pressure causes the air to be exhausted through an exhaust hole 6 provided at the rear of the outer box 2. However, water vapor leaks from gaps in the exhaust passage from the heating chamber 1 to the exhaust hole 6, and the leaked water vapor adheres to the inside of the upper surface of the outer box 2 as water droplets, and eventually falls onto the insulation material 5. It's going to happen. The falling water droplets soak into the heat insulating material 5 and reach the upper heater 3, causing insulation failure of the heater 3. The heater 3 with poor insulation poses a serious problem as it poses a risk of electric shock to the user of the device.

Also, for oven/grill cooking, heater 3
The heat causes the upper surface of the outer box 2 to reach a high temperature, which is also dangerous and uncomfortable for the user of the device. Providing heat radiation holes on the top surface of the outer box 2 can prevent the top surface of the outer box 2 from becoming hot, but if a user accidentally spills water on the top surface of the outer box 2, the heat radiation holes Conventionally, it has been impossible to provide heat dissipation holes in the upper surface of the outer box 2, since water may enter the heater 3 and cause insulation failure of the heater 3.

Furthermore, in oven/grill cooking, the heat of the heater 3 is used to heat the door mounting plate 7 that constitutes the front of the heating chamber 1.
There was a problem with deformation. When the door mounting plate 7 deforms, the decorative plate 8 installed thereon also deforms, leaving a gap between it and the front part of the top surface of the outer box 2, making the door very unsightly.

The present invention solves these conventional problems, and has a simple structure that prevents poor insulation of the heater and high temperatures of the outer box 2 due to water vapor, and also prevents the appearance from being damaged by heat. This provides an excellent cooking device.

Means for Solving the Problems The heating cooking device of the present invention includes a heating chamber in which food is placed, an outer box forming the outer shell of the device, a heat radiation hole installed on the upper surface of the outer box, and A heater installed on the outside of the ceiling of the heating chamber, a drainage hole provided in the bottom of the outer box, and a water-resistant plate installed between the upper part of the outer box and the heater, and the water-resistant plate is connected to the heater. It covers the entire surface and is sloped so that the front part is high and the rear part is low, and is fixed to the door mounting plate to which the door is attached and the rear part of the heating chamber.

Effect The heating cooking device of the present invention has a water-resistant plate installed between the heater installed outside the ceiling of the heating chamber and the upper part of the outer box so as to cover the entire surface of the heater, so that water vapor generated during microwave cooking is prevented. Even if it adheres to the top of the outer box and falls as water droplets, it will be blocked by the water-resistant plate and will not fall onto the heater. Furthermore, because the water-resistant plate is installed at an angle so that the front part is high and the rear part is low, water droplets that fall on the water-resistant plate flow down to the rear of the heating chamber and are discharged to the outside of the device from the drainage hole provided at the bottom of the outer box. be done. As a result, water and meat juices do not remain on the water-resistant plate forever, and no bad odor is generated. Also, by providing a water-resistant plate, it becomes possible to make heat radiation holes in the upper part of the outer box. Even if a user spills water on the top of the outer box and enters the inside of the device through the heat radiation hole, the water-resistant plate prevents water from falling into the heater. The upper part does not get hot and is safe. Additionally, the water-resistant plate itself has an insulating effect that blocks the heat from the heater, and plays a role in lowering the temperature at the top of the outer box. Furthermore, the water-resistant plate is fixed with screws to the door mounting plate to which the door is attached and to the rear of the heating chamber, but this water-resistant plate serves as reinforcement and does not deform even when the door mounting plate becomes hot during oven or grill cooking, unlike conventional methods. There are no gaps or steps between the outer box and the decorative panel at the top of the door.

Embodiment A heating cooking apparatus according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a microwave oven equipped with a surface heater according to the present invention, and FIG. 2 is a partially cutaway top sectional view of the same device. Upper heater 3 installed on the upper part of the outer box 2 and the upper part of the heating chamber 1
A water-resistant plate 13 is installed in between with a high front part (door side) and a low rear part. A drainage hole 14 is provided on the bottom surface of the outer box 2, and a heat radiation hole 15 is provided on the top surface. The air generated by the cooling fan 10 that cools the magnetron 9 and the control device 12 flows through the air guide 1.
2 into the heating chamber 1, and is discharged from the exhaust hole 6 along with the steam and gas generated during cooking, but a leak occurs along the route, and it adheres to the top of the outer box 2 and falls as water droplets. do. Water droplets are water resistant plate 1
3 and flows down towards the lower part of the heating chamber. The water that has flowed down is drained out of the device through a drainage hole 14 provided at the bottom of the outer box 2.
Further, if the user accidentally spills water on the top surface of the outer box 2, water that enters the device through the heat radiation hole 15 will also be discharged out of the device through the same route. In this way, neither the water vapor generated inside nor the water intruding from the outside falls directly onto the upper heater 3, making it a highly safe device that does not cause electric shock accidents such as electric leakage. Additionally, since water vapor and meat juices are immediately discharged from the device, it does not emit any bad odors, making it a desirable device from a sanitary standpoint.

In addition, the heat radiation holes 15 are provided at the top of the outer box 2, and the water-resistant plate 13 has an insulating effect that blocks the heat of the heater 3, so the upper part of the outer box 2 does not get hot during oven or grill cooking, making it safe for the user. It is. Furthermore, the heat insulation effect of the water-resistant plate 13 improves the heat retention of the heating chamber 1, which is advantageous for oven cooking.

In addition, the water-resistant plate 13 is installed on the door mounting plate 7 and the rear of the heating chamber 1 with screws, but the water-resistant plate 13 is reinforced and prevents the door mounting plate 7 from warping or deforming even during oven or grill cooking, unlike conventional methods. There is no gap or difference in level between the outer box 2 and the decorative board 8, and the device has an excellent appearance.

Effects of the Invention As described above, in the heating cooking device of the present invention, a water-resistant plate is installed between the top surface of the outer box and the heater installed at the top of the heating chamber with a slope such that the front part is high and the rear part is low. As a result, the following unique effects can be obtained.

(1) If water vapor generated inside the device adheres to the top surface of the outer box and falls as water droplets, or if the user accidentally spills water on the top of the device and it enters the inside of the device through the heat radiation holes, the water-resistant plate may Since water is not directly splashed on the heater, it is possible to create a highly safe device that does not cause electric shock accidents.

(2) Since the water-resistant plate is installed so that the rear part is lower, water that falls on the water-resistant plate quickly flows down to the rear of the heating chamber and is drained out of the device from the drainage hole provided at the bottom of the outer box. Ru. Since water vapor, meat juice, etc. do not remain in the device forever, it is possible to provide a sanitary device that does not generate bad odors.

(3) Because of the water-resistant plate, heat radiation holes can be installed on the top of the outer box, and the water-resistant plate itself has an insulating effect that blocks the heat of the heater, making it ideal for ovens and
The top surface of the outer box does not get hot even during grill cooking, making it possible to provide a safe device that is easy for the user to use.

(4) The water-resistant plate acts as a reinforcing material, preventing warping and warping even if the door mounting plate gets heated during oven or grill cooking.
No deformation occurs, and unsightly appearance such as gaps or steps between the decorative board installed on the door mounting plate and the outer box do not appear.

As described above, the cooking device of the present invention has extremely advantageous effects in practice.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a heating cooking device according to an embodiment of the present invention, FIG. 2 is a partially cutaway plan sectional view of the same device, FIG. 3 is a side sectional view of a conventional heating cooking device, and FIG. The figure is a partially cutaway plan sectional view of the same device. 1...Heating chamber, 2...Outer box, 3...Top heater, 13...Waterproof plate, 14...Drain hole, 15...
Heat radiation hole.

Claims (1)

[Scope of Claims] 1. A heating chamber in which the food to be cooked is placed, an outer box forming the outer shell of the device, a heat radiation hole installed on the top surface of the outer box, and a drainage hole installed on the bottom surface of the outer box. a hole, and a heater installed on the outside of the upper surface of the heating chamber;
The heating cooking device includes a water-resistant plate installed between the upper part of the outer box and the heater, and the water-resistant plate covers the entire upper part of the heater and is sloped so that the front part is high and the rear part is low. . 2. The heating cooking device according to claim 1, wherein the water-resistant plate is fixed to the door mounting plate to which the door is attached and to the rear part of the heating chamber.