JPS5912285B2 - electric fryer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric fryer for frying tempura, etc., and in particular, a temperature sensing element that senses changes in oil temperature controls power supply to the heater so that the oil temperature can always be maintained at a set temperature. It concerns an electric fryer.

In such an electric fryer, the purpose of the present invention is to provide a stirrer in the oil tank and forcibly rotate the stirrer to equalize the oil temperature and improve the accuracy of temperature control using a temperature sensing element. The purpose is to ensure that the set temperature can be maintained at a certain temperature, thereby making it possible to skillfully fry tempura and other foods.

The second purpose is to magnetically couple the stirrer and the rotary body rotated by the motor, thereby eliminating the need to drill holes in the oil tank and omitting the associated sealing structure. The aim is to simplify.

Embodiments of the present invention shown in the drawings will be described in detail below.

First, in the embodiments shown in FIGS. 1 and 2, the container body 1 has a housing-like exterior body 2 having an opening on one side on the upper surface.
, an outer pot 3 having an opening 4 at the center of the bottom surface, which is attached to the opening of the exterior body 2 with an upper edge flange, and a support leg 5 attached to the lower surface of the exterior body 2, Inside, there are temperature control circuit parts excluding the temperature sensing element, and a magnetic material 7 that looks like a permanent magnet.
A rotating body 6, a motor 8, and the like are provided.

The rotating body 6 is made of a non-magnetic material such as synthetic resin, and is shaped like an annular container with an opening at the top, and has a magnetic body 7 adhesively fixed therein with a heat-resistant adhesive 9. Several grooves are formed on the outer circumferential surface so that it can also be used as a pulley.

The rotating body 6 is rotatably supported by a shaft portion 11 of a mount 10 made of a non-magnetic material and fixed to the inner bottom surface of the container body 1 facing the opening 4 of the outer pot 3.

Note that 12 is a bearing metal, 13 is a washer, and 14 is a rubber sheet.

The motor 8 is located on the side of the outer pot 3 and is fixed on the inner bottom surface of the main body 1 via a mounting frame 15 with the shaft 8a facing downward.
A belt 18 is stretched between the pulley 17 and the rotating body 6.

The oil tank 19 is molded from a non-magnetic material such as aluminum, the inner surface of which is coated with a fluororesin, and is housed in the outer pot 3 of the main body 1 so as to be freely accessible.

A shaft portion 20 that projects upward when the oil tank 19 is formed by casting is integrally formed in the center of the inner bottom surface of the oil tank 19, and a stirrer 21 is rotatably and detachably supported by the shaft portion 20.

The stirring bar 21 has a large number of stirring blades and has a built-in magnetic material 22 such as a permanent magnet, and the magnetic material 22 is coated and molded with fluororesin, silicone resin, etc., so that it has a structure that does not pose a problem in terms of food hygiene. It's Toshide.

Thus, the magnetic body 22 of the stirrer 21 is magnetically coupled to the magnetic body 7 of the rotary body 6 while being supported by the shaft portion 20, so that the stirrer 21 rotates with the rotation of the rotary body 6. .

The heater unit 23 includes an outer case 24 that is detachably installed on the upper surface of the main body 1, a heater 25 such as a sheathed heater that has both ends fixed to the case 24, and a heater 25 made of aluminum or stainless steel that has one end fixed to the outer case 24. It consists of a pipe 26 such as the above, and a temperature sensing element 27 supported at the other end of the pipe 26.
The heater 25 and the temperature sensing element 27 are located at the inner bottom of the oil tank 19 with the heater 25 and the temperature sensing element 27 installed, and are electrically connected to electrical components on the side of the main body 1 to form a predetermined electric circuit.

Note that the temperature sensing element 27 is made of, for example, a thermistor, and is covered with a fluororesin, silicone resin, or the like.

The operation of the electric fryer of the above embodiment will be explained.

Now, when the motor 8 is driven once with oil stored in the oil tank 19 and heated by the heater 25, the rotational force is transmitted to the rotating body 6 via the pulley 17 and the belt 18, causing it to rotate. As the body 6 rotates, the magnetic coupling between the two magnetic bodies 7 and 22 causes the stirrer 21 to rotate.

Then, due to the rotation of the stirrer 21, the oil in the oil tank 19 is forcibly stirred and mixed, thereby promoting uniformity of temperature.

On the other hand, although the temperature sensing element 27 senses a part of the oil temperature, it is able to sense the correct temperature by equalizing the oil temperature as described above, and as a result, the energization to the heater 25 is properly controlled, and the oil temperature is set. Reliably maintained at temperature.

In this way, the oil in the oil tank 19 has no variation in temperature,
Moreover, since the temperature is reliably maintained at the set temperature, the following disadvantages of those without a stirrer can be overcome, and tempura etc. can be fried well at the set temperature.

For models without a stirrer, the temperature of the oil around the heater becomes abnormally high compared to other parts, which not only accelerates oxidation of the oil, but also causes large differences in the oil temperature at various parts, which also causes sensitivity. Since the temperature element is affected by the oil temperature around it and controls the power supply to the heater, it is not possible to properly control the temperature, making it extremely difficult to maintain the oil temperature at the set temperature.

FIG. 3 shows another embodiment of the present invention, in which the oil tank 19' is molded from ostinite stainless steel (weakly magnetic material) or the like.

In this case, since the shaft part supporting the stirrer 21 cannot be integrally molded into the oil tank 19', a support base 28 made of a non-magnetic material with a shaft part 20' formed on the inner bottom surface of the oil tank 19' is riveted. 29 or the like, and this can also exhibit the same effect as the above-mentioned embodiment.

According to the present invention configured as described above, by forcibly stirring the oil in the oil tank, the oil temperature can be made uniform, and the temperature control accuracy by the thermosensing element is increased to ensure that the oil temperature is maintained at the set temperature. You can skillfully fry tempura, etc.

Moreover, there is no need to make a hole in the oil tank to install the stirrer, and the accompanying sealing structure can be omitted, simplifying the configuration. Also, since the motor is located on the side of the oil tank, The height of the main body of the container can be kept small, making it extremely convenient to use on a tabletop.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing one embodiment of the deep fryer of the present invention, FIG. 2 is a sectional view of the same, and FIG. 3 is a cross sectional view of another embodiment of the deep fryer of the present invention. 1: Device body, 6: Rotating body, 7: Magnetic body, 8: Motor, 1
9, 19': Oil tank, 20.20': Shaft, 21: Stirrer, 25: Heater, 27: Temperature sensing element.

Claims (1)

[Scope of Claims] 1. An oil tank with a shaft protruding from the inner bottom surface, a container body that accommodates the oil tank so that it can be taken in and out, a heater that heats the oil in the oil tank, and a heater that senses changes in oil temperature. a temperature-sensitive element that controls the energization of the device; a stirrer that is rotatably supported by the shaft in the oil tank and contains a magnetic material; A rotary body having another magnetic body that magnetically couples with the magnetic body, and a motor disposed within the vessel body on the side of the oil tank to rotate the rotary body,
An electric fryer configured to rotate a stirrer as the rotor rotates. 2. The electric fryer according to claim 1, wherein the shaft portion is integrally molded into an oil tank made of aluminum. 3. An electric fryer according to claim 1, wherein a support base having a shaft portion is fixed to the inner bottom surface of an oil tank made of stainless steel.