JPS62574Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for irradiating food with microwaves while the food is immersed in high-temperature oil.

When food in hot oil is irradiated with microwaves, the dielectric loss of the food is much larger than that of oil, so the microwave energy is selectively absorbed into the food, causing the surface of even thick food to burn. It can be heated to the center in a short period of time, and deep-fried foods with a good finish can be obtained.

In this type of deep-frying apparatus, oil is always contained in the oven, so even if microwaves are introduced into the oven without food being placed in the oven, the magnetron etc. will not be affected because it is not in an unloaded state. However, at this time, since there is no food, the temperature of the oil itself increases due to microwave absorption, making it impossible to accurately adjust the oil temperature.

Therefore, the present invention detects when there is no food in the oven and prevents the introduction of microwaves.

FIG. 1 shows the appearance of a frying device according to an embodiment of the present invention, and the device has a door 1 for opening and closing the oven opening.
and an operation panel 2. The operation panel 2 is provided with a power switch SW ₁ , a start button 3 , an oil temperature adjustment dial 4 , a frying timer dial 5 and a microwave timer dial 6 .

FIG. 2 shows the inside of the device. Cooking oil 12 is stored at the bottom of the oven 11 to which microwaves are supplied from the magnetron 10, and the oil is heated by the heater.
Heated to high temperature by RH. The lever 13 swings around a fulcrum 14, and a net basket-shaped placing body 15 on which food is placed is removably suspended from its tip. The other end of lever 13 extends outside the oven and is connected to motor M via transmission rod 16. When the motor M is energized, the lever 13 is driven to rotate clockwise, and the other end is connected to the downward stopper
8 is held in the position where it abuts. At this time, the mounting body 15 is located above the oil level of the edible oil 12. Next, when the power to the motor M is cut off, the weight of the mounting body 15 overcomes the anti-reverse torque of the motor M, and the lever 13 rotates counterclockwise to a position where the other end contacts the upper stopper 19. is maintained. At this time, the mounting body 15 sinks into the edible oil 12, the food inside the mounting body 15 is immersed in the edible oil 12, and the other end of the lever turns on the switch _SW6 . When the motor M is energized while the mounting body 15 is not suspended from the lever 13, the lever 13
Of course, the lever 13 rotates clockwise and is held in a position where the other end is in contact with the lower stopper 18, but even if the power to the motor M is cut off in this held state, the lever 13 is still held in that position. Lever 1
3 dead weight etc. are designed.

FIG. 3 shows the electrical circuit of the device, and this circuit configuration will be explained below along with the operation of the device.

First, in order to put the apparatus in standby mode, the oil temperature adjustment dial 4 on the operation panel is positioned at a desired temperature scale, and the power switch SW ₁ is turned on. At this time, the heater M is energized via the switch, and the temperature of the cooking oil 12 is maintained at the value specified by the oil temperature control dial 4 by the action of the temperature-sensitive switch TH.
At the same time, the motor M is energized via the normally closed switch SW ₃ , so that the lever 13 is in a position where its other end abuts the lower stopper 18.

Next, the placing body 15 containing the food is moved to the lever 13.
When the door 1 is closed, the frying timer dial 5 and the microwave timer dial 6 on the operation panel are respectively positioned at desired time scales. Door switch SW ₀ by closing door 1
is turned on, and switches SW ₄ and SW ₅ are turned on according to the settings of the deep-fried tofu timer dial 5 and microwave timer dial 6, respectively.

So, when you press start button 3 on the operation panel,
This turns on switch SW ₂ and turns on the switch.
Coil L is energized through the path of SW ₁ , SW ₂ , coil L, switch SW ₄ and door switch SW ₀ , switch SW ₂ is self-held, and switch SW ₃ is turned off. The frying timer motor TM ₁ connected in parallel with the coil L is also energized to start measuring the frying time, and the power to the motor M is cut off, the mounting body 15 sinks into the cooking oil 12, and the switch is turned off. SW ₆ turns on. As _a result _{, the} magnetron ₁
The microwave oscillation circuit 20 including 0 and the microwave timer motor TM ₂ connected in parallel with the circuit are energized, and microwave oscillation and timing of microwave irradiation time are started.

Usually, the microwave timer time is set shorter than the frying timer time, and therefore, after the microwave timer time has elapsed, the switch SW ₅ is turned off and the microwave oscillation is stopped. Next, the switch SW ₄ is turned off as the fried tofu timer time elapses, and accordingly, the switches SW ₂ and SW ₃ are turned off and on, respectively. As a result, the motor M is re-energized, the lever 13 rotates clockwise, and the mounting body 1
5 is lifted from the oil 12, and switch SW ₆ is turned off, returning the device to the standby state.

If the frying timer dial 5 and the microwave timer dial 6 are respectively set and the start button 3 is operated without placing the food in the oven 11, that is, without suspending the mounting body 15 from the lever 13, Similarly, the power to the motor M is cut off, but since the mounting body 15 is not suspended from the lever 13, the lever 13 does not rotate counterclockwise, and therefore the switch SW ₆ is turned on. not become,
No microwave oscillation occurs.

When microwaves are introduced into the oven 11 when there is no food in the oven, the cooking oil 12 absorbs the microwaves, and although the temperature of the cooking oil 12 is regulated by the temperature-sensitive switch TH, the temperature of the cooking oil 12 increases. The temperature rises rapidly, which is undesirable as oily smoke is generated, but in the above embodiment, the presence or absence of food is detected by the presence of the switch SW ₆ , and the microwave oscillation is controlled, so this does not occur.

In the above embodiment, it is also possible to prevent the lever 13 from rotating counterclockwise when the motor M is de-energized unless the amount of food placed on the placing body 15 exceeds a certain level.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is a front view of the device, FIG. 2 is a sectional view of the device, and FIG. 3 is an electric circuit diagram. 10... Magnetron, 12... Edible oil, 15
...Placement body, M...Motor.

Claims (1)

[Scope of utility model registration request] An apparatus for irradiating food with microwaves while immersed in high-temperature oil, comprising: a mounting body on which the food is placed; means for supporting the mounting body; a first stopper for holding the support means in a position where it is immersed in the oil; a second stopper that restricts movement of the support means and holds the mounting body in a position where it is not immersed in the oil; and detecting the position of the mounting body. What is claimed is: 1. A microwave deep-frying apparatus comprising: a detection means for detecting; and a control means for controlling oscillation of microwaves according to the output of the detection means.