JPS5942985Y2 - flyer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improvements in deep fryers, frying pans, etc.

Recently, there has been a strong demand for disaster prevention properties, especially for kitchen equipment, in buildings and facilities that require a high degree of safety against fire, such as high-rise buildings, hospitals, facilities for the elderly, facilities for the mentally and physically disabled, underground malls, hotels, and schools.

Commercial fryers are one type of kitchen equipment that can cause fires.

Conventional commercial fryers include gas combustion type fryers shown in FIGS. 1A and 1B, and immersion electric heater type fryers shown in FIG. 1C.

A gas combustion type fryer has a plurality of pipes 4 extending upwardly from the bottom of the oil pot 1 at predetermined intervals so as to pass through the pot and are approximately parallel to the bottom of the pot.
The pipe 4 is heated by sending combustion gas from the pipe 4, and the heat from the pipe 4 heats the oil 3 to 180° to 250°C for cooking, but since the heating is done by flame, there is a risk of the oil being used catching fire. Not only that, but if the oil leaks or flows out due to wear and tear on the pipe 4, there is a great risk of a fire.

In addition, the immersion electric heater type heats the oil 3 by throwing a pipe heater 6 with a resistance heating wire embedded into the oil pot 1, which seems to be highly safe, but the pipe heater 6 The resistance heating wire embedded inside is usually 1,000 yen.
Since the temperature is as high as 0°C, there is a high risk of ignition due to oil seepage due to pipe breakage, etc.

The inventor of this invention focused on the fact that the above-mentioned dangers that exist in conventional fryers occur because the heat source is hotter than the oil. The aim is to provide a fryer with extremely high disaster prevention properties.

The present invention will be explained according to the embodiment shown in FIG.

A metal pipe 4 is inserted almost horizontally to the bottom of the oil pot 1 so as to pass through the steel wall upwardly from the bottom of the oil pot 1 at a predetermined interval.

As the metal pipe 4, it is preferable to use a material that has a large heat generation effect due to electromagnetic induction, such as a steel pipe, and from a sanitary standpoint, it is even more preferable to use a composite pipe whose outer layer is made of stainless steel.

Reference numeral 7 denotes a closed-circuit iron core made of a material with low iron loss such as a laminated silicon steel plate, for example, in the shape of a square, whose negative side penetrates into the metal pipe 4, and whose opposite side is connected to a commercial frequency power source 9. A winding 8 is wound thereon.

Therefore, the winding 8 constitutes a primary winding, and the metal pipe 4 constitutes one turn of a secondary winding.

When you turn on the power supply 9 with this configuration, the iron core 7
A current is induced by electromagnetic induction between the primary winding 8 and the secondary winding 8, and the induced current causes a secondary induced current to flow in the metal pipe 4, which is the secondary winding, in the circumferential direction of the pipe.

As mentioned above, since the metal pipe 4 is made of a material that has a large heat generation effect due to electromagnetic induction, the secondary induced current generates heat, which increases the temperature of the oil in contact with the outer periphery of the metal pipe.

In this way, the oil above the metal pipe 4 is gradually heated by convection, and cooking occurs when the oil reaches the desired temperature.

In this case, if water 2 is placed in the oil layer located below the metal pipe 4, and oil 3 is placed above it, the water layer 2 will be heated by convection of the oil 3 while maintaining the lower position. The part of the oil 3 that comes into contact with the water 2 is maintained at a low temperature, and charcoal combustion due to the high temperature of the residue left in the oil layer 3 during cooking is prevented.
In addition, since the residue is precipitated in the water layer 2, cooking can be carried out in the oil layer with less residue, and the oil 3 is less likely to suffer from oxidation.

In the above embodiment, the primary winding 8 of the iron core 7 is connected to a commercial frequency power source, but the configuration is not limited to this, and even if it is connected to a high frequency power source, the metal pipe is similar to the above embodiment. 4, and in this case, the cross-sectional area of the iron core can be made small, so that the heat source can be made smaller and lighter.

According to this invention, the oil is heated by the heat generated by the metal pipe itself that is in contact with the oil, so the heat generated by the metal pipe is immediately transferred to the oil by heat conduction, resulting in a high temperature that far exceeds the oil temperature. The metal pipe does not burn, and the temperature is about the same as the oil temperature, so there will be no ignition accidents caused by contact between oil and a heat source at a temperature higher than the oil temperature, which would occur in conventional fryers due to pipe breakage.

According to the present invention, the oil temperature may be adjusted by opening and closing the power supply 9 based on the temperature measurement by the cook.
A temperature sensor may be attached to the inner wall of the power supply 9, and the power supply 9 may be turned on or off based on the temperature detected by the temperature sensor.

Furthermore, safety can be further ensured by attaching a temperature sensor to the inner wall of the metal pipe, and detecting the temperature rise of the metal pipe when the metal pipe is turned off when the fire is dry, thereby turning off the power supply 9.

[Brief explanation of drawings]

Figure 1a is a vertical sectional view showing an example of a conventional fryer;
The figures are a sectional view taken along the line B-B of Fig. 1a, Fig. 1C is a longitudinal sectional view showing another example of a conventional fryer, and Fig. 2a is a partially sectional front view showing an embodiment of the present invention. , Figure 2 is A in Figure 2 a.
-A sectional view. 1...Oil layer, 4...Metal pipe, 7.
...Iron core, 8..., ...Primary winding, 9...
··AC source.

Claims (1)

[Scope of utility model registration request] A metal pipe made of a material with a good electromagnetic induction heating effect is installed horizontally above the bottom of the oil pot at a predetermined distance, and one side of the iron core of the closed circuit is passed through the metal pipe, A fryer consisting of windings connected to an AC power source on opposite sides.