JPS5835928Y2 - heating cooker - Google Patents

Description

[Detailed description of the invention] The present invention relates to a heating cooker, and provides a heating cooker which has a structure in which hot air is sent to food by a fan to cook the food, and the hole through which the shaft of the fan passes is not provided in the heating chamber. The purpose is to

In conventional heating cookers, efforts have been made to combine the hot air circulation heating device, which heats the food uniformly by stirring the heat generated by the heater inside the oven with a circulation fan, and the steam heating method, which heats the food with steam. Ta.

The reason for this combination is that with the hot air circulation heating method, meat dishes can be cooked at high temperatures, but because the hot air strokes the surface of the food, the food becomes extremely dry and cannot be cooked with buns, etc.

However, since the steam heating device uses steam to heat the food, the surface of the food does not dry out, making it ideal for cooking steamed buns and the like.

However, since food is heated using steam as a medium, the internal temperature can only rise to 100°C, making it impossible to cook high-temperature meat dishes.

Due to these differences in heating methods, the types of dishes that can be prepared are limited.

If this is combined, one heating device can perform both hot air circulation heating and steam heating.

However, in making this complex, the shaft from the motor located outside the back wall of the oven had previously passed through the oven chamber and was connected to the circulation fan inside the oven, so we had to pass the motor shaft through the back wall. Due to significant steam leakage from this hole, insulation failure of electrical parts inside the body and
This caused problems such as strength deterioration due to rust on the metal parts, and it was necessary to take measures to prevent moisture from discharging electrical parts, making the product extremely expensive and hindering its commercialization.

Figures 1 and 2 show a conventional example, in which 1 is a heating cabinet that heats food in the center, 2 is a door that can be opened and closed to take food in and out of the heating cabinet 1, 3 is a bottom plate, and 4 is a A boiler for generating steel, 5 a blowout hole for blowing the steam generated from the boiler 4 into the heating chamber 1, 6 a metal fitting for fixing a circulation fan motor, 7 a motor for driving a circulation fan, 8 a blowout hole for blowing out the steam generated from the boiler 4 into the heating chamber 1; A circulation fan 9 for stirring is a heater that is a heat source attached to the outer periphery of the circulation fan 8.

Here, in order to make the shaft 18 of the motor 7 protrude into the heating chamber 1 and attach the circulation fan 8 to the tip of this shaft 18,
It was necessary to form a hole 17 in the back plate 16 of the heating chamber 1 to allow the shaft 18 to pass through.

The problem here is that the shaft 18 that transmits the power of the motor 7 to the circulation fan 8 inside the heating oven 1 is connected to the back plate 1 of the heating oven 1.
Since the hole 17 penetrates through the heating chamber 1, the back plate 16 of the heating chamber 1 has a hole 17 therein.

In other words, this hole 17 is connected to the shaft 18 of the motor 7, which is a rotating body.
, so when installing the motor 7, the gap between it and the shaft 18 had to be large, considering the angle and other factors.

The fact that there are large holes in the heating chamber wall means that hot air leaks through the holes when hot air circulation heating is used, causing a delay in the rise of the central temperature inside the chamber, which is suitable for cooking, and prolonging the cooking time.

■ Heat generated by the heater is not effectively converted into food, resulting in energy loss.

■ It causes the temperature of electrical parts inside the body to rise, and there are problems such as the electrical parts needing to be heat resistant and becoming expensive.

Furthermore, when using the steam heating method, steam leakage caused dew droplets to form on the inner walls and other parts of the body, causing problems such as rust and strength deterioration in all metal parts.

■ Dew droplets were dripping onto the electrical components inside the body, causing poor insulation.

■ The operation panel made of transparent acrylic etc. became cloudy, spoiling its appearance.

■ Water that had dripped onto the inner wall of the body was spilling out through the gap in the body.

There were problems such as.

The present invention eliminates the above-mentioned conventional drawbacks and provides a heating cooker with good performance.One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 3, the same parts as in FIGS. 1 and 2 are given the same numbers and will be explained.

In FIG. 3, reference numeral 10 is a permeable plate made of a non-magnetic material that is attached to cover an opening 19 formed by cutting out a part of the back plate 16 of the heating chamber 1, through which magnetic flux passes, and 11 is a circular shaft. 18 is a magnet rotating plate fixed to the magnet, and 12 is a circular magnet rotating plate located opposite to the magnet rotating plate 11 through the permeable plate 10, and the magnet is attached.
13 is a fan shaft that transmits the power from the magnet rotating plate 12 to the circulation fan 8; 14 is a bearing for the fan shaft 13;
5 is a bearing fixing fitting.

The motor 7 is attached to the magnetically permeable plate 10 by a fixing member 6, and the shaft 18 of the motor 7 is connected to a magnet rotating plate 11 located outside the magnetically permeable plate 10.

Next, a magnet rotating plate 12 is located at a position opposite to the magnet rotating plate 11 with the magnetically permeable plate 10 interposed therebetween, and is connected to the circulation fan 8 by a fan shaft 13.

The fan shaft 13 is supported by a bearing 14 and a bearing fixing fitting 15, and is fixed to a magnetically permeable plate 10.

In this configuration, the magnet rotating plate 11 is rotated by the motor 7, and the magnet attached to the magnet rotating plate 11 attracts the magnet attached to the magnet rotating plate 12 located at the opposing position, so that the magnet rotating plate 12 is rotated. do.

Next, the circulation fan 8 attached to the magnet rotating plate 12 via the fan shaft 14 rotates, and the heat generated by the heater 9 circulates throughout the heating chamber to heat the food.

It is also possible to heat the food by blowing steam generated from the boiler 4 into the heating chamber 1 through the blowing hole 5.

Furthermore, when a hot air circulation heating system and a microwave oven are combined, radio wave leakage from the shaft of the conventional motor 7 can be prevented by configuring the system as in the present invention.

In addition, in FIG. 3, the magnetic permeable plate 10, which is a non-magnetic material, is
However, the entire back plate of the heating chamber 1 may be made of a non-magnetic material.

As described above, according to the present invention, the circulation fan is rotated by the power of the motor due to the attractive force between the magnet installed on the rotating magnet plate outside the heating chamber and the magnet installed on the rotating magnetic plate located inside the heating chamber. ■ Since there are no holes in the heating chamber wall, steam does not leak out of the heating chamber during steam heating.
This eliminates the conventional problem of dew dripping on the inner walls and other parts of the body, causing rust and deterioration of the strength of all metal parts.

Also, dew drops will not spill out from the gaps in the body.

■ Since there are no shaft holes in the back wall of the heating chamber, steam during steam heating and hot air during hot air circulation heating do not leak out of the heating chamber. Since there are no insulation defects, there is no need to take measures against moisture, reducing costs and increasing reliability.

Also, since hot air does not leak, the temperature rise of electrical parts within the body can be kept low, leading to cost reductions.

■ When heating with hot air circulation, there is no leakage of hot air, and the central temperature inside the refrigerator rises quickly to the cooking temperature, reducing cooking time.

■ There is no leakage of steam during steam heating or hot air during hot air circulation heating, and there is no loss of energy due to leakage (heat is efficiently added to the food), making it extremely economical.

■ Operation panels made of transparent acrylic and other materials used to become cloudy due to steam leaking from the shaft hole, spoiling the appearance, but now there will be no more leakage, and the appearance will no longer be spoiled by cloudiness.

The heating cooker of the present invention was able to achieve the above-mentioned effects.

[Brief explanation of the drawing]

1 and 2 are a perspective view and a side sectional view of a conventional heating cooker, and FIG. 3 is a side sectional view of a heating cooker according to an embodiment of the present invention. 1... Heater, 7... Motor, 10
...Magnetic plate, 11゜12 ... Magnet rotating plate, 8 ... Fan, 13, 18 ... Axis.

Claims (1)

[Scope of utility model registration request] a heating chamber, a heater and a fan provided within the heating chamber, a motor provided outside the heating chamber, a rotatable first magnet provided on the shaft of the motor, and a rotatable first magnet provided on the shaft of the fan; A heating cooker comprising: a second magnet that rotates as the first magnet rotates.