JPS5924263Y2 - electric fryer - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric fryer for frying tempura and the like, and by increasing temperature control accuracy, the fluctuation range of oil temperature is suppressed to a small extent, so that frying can be performed efficiently at a set temperature.

Conventionally, in this type of electric fryer, a temperature sensing element such as a thermostat that controls the power supply to the heater was attached to the outer circumferential surface of the oil tank via a mounting angle, so the temperature sensing element was not installed. The oil temperature is sensed through an angle and an oil tank, and the response to changes in oil temperature is slow. Therefore, the temperature control by the temperature sensor has poor accuracy, and the range of oil temperature fluctuations becomes large. It was difficult to fry food at the set temperature.

In particular, when the oil temperature drops due to the addition of materials into the oil that has reached the set temperature, the response of the temperature sensing element to changes in oil temperature is slow, so it takes a long time before the heater is energized to raise the oil temperature to the set temperature again. It took a considerable amount of time, during which time the ingredients added were to be fried at a lower temperature than the set temperature.

The present invention has been devised in view of these points, and the embodiments of the present invention shown in the drawings will be described in detail below.

Reference numeral 1 denotes a corrugated container body, in which temperature control circuit parts are housed, and a temperature control knob 2 of a temperature controller is disposed on the top surface, and an appropriate temperature indicator lamp 3 is placed on the top surface.

Reference numeral 4 denotes an oil tank that is housed in and out of the container body 1 and is made of materials such as aluminum and stainless steel, and its inner surface is coated with fluorine.

Reference numeral 5 denotes an outer case 6 which is removably installed on the top surface of the main body 1, a heater 7 such as a sheathed heater whose both ends are fixed to the case 6 and bent into a predetermined shape, and a heater 7 whose one end is fixed to the case 6 and bent into a predetermined shape. This heater unit is composed of a fixed small-diameter pipe 8 made of aluminum, stainless steel, etc., and a heat sensitive element 9 located at the other end of the pipe 8 and extending outward. In the installed state, the heater 7 and the heat-sensitive element 9 are arranged at the inner bottom of the oil tank 4, and the heater 7 and the temperature-sensitive element (to be described later) are electrically connected to the temperature control circuit parts on the side of the main body 1 to generate a predetermined electricity. It forms a circuit.

The heat sensitive body 9 includes a temperature sensitive element 10 such as a positive temperature coefficient thermistor, and a connector 12 for connecting the element 10 and a lead wire 11.
12 is a fluororesin that poses no food hygiene problems.

It is constructed by insert molding into a heat-resistant resin 13 such as silicone resin, and is fitted and supported at one end of the pipe 8.

A portion of the pipe 8 is caulked 8a to fix the internal lead wire 11 and prevent the heat sensitive element 9 from coming off.

The electric fryer having the above structure has an electric circuit as shown in FIG.

In FIG. 3, reference numeral 14 denotes a triac, which forms a series circuit with the heater 7 and is connected between both terminals of the AC power supply.
5 is a protective resistor connected in parallel to the triac 14 by making a series circuit with the proper temperature display lamp 3; 16 is a temperature control trigger circuit including a temperature regulator, etc., and a value set by the temperature regulator and a temperature sensing element; The gate signal of the triac 14 is controlled based on the signal from the triac 10.
4 controls the supply of electricity to the heater 7 to maintain the oil temperature at a set temperature.

Next, its effect will be explained.

Now, put oil in the oil tank 4, immerse the heater 7 and the heat sensitive element 9 in the oil, and turn on the heater 7. Since the oil temperature is initially low, the heater 7 is continuously energized and starts heating the oil.
Heat until the set temperature is reached.

When the oil temperature reaches the set temperature, the temperature control trigger circuit 16 activates the triac 14 by immediately sensing that the temperature sensing element 10 immersed in the oil has reached the set temperature via the heat-resistant resin 13. is turned off to stop the heat generation of the heater 7, and at the same time, voltage is applied to the appropriate temperature display lamp 3 via the heater 7 and the protective resistor 15 to turn off the lamp 3.
lights up to indicate that the oil temperature has reached the set temperature.

Further, when the oil temperature becomes lower than the set temperature, the temperature control trigger circuit 16 is activated by the triac 14 due to the action of the temperature sensing element 10.
is turned on to restart the heat generation of the motor 7, and at the same time, the appropriate temperature display lamp 3 is turned off.

Thereafter, by repeating such operations, the oil temperature will be maintained at the set temperature.

The range of fluctuation in oil temperature due to such temperature control is kept as small as possible because the temperature sensing element 10 is located in the oil and quickly responds to changes in oil temperature.

By confirming that the appropriate temperature display lamp 3 is lit and throwing the ingredients for tempura into the oil that has reached the set temperature, the tempura can be fried well with the oil at the set temperature.

Note that the oil temperature will drop once the ingredients are added, but
The temperature sensing element 10 quickly senses the change in oil temperature, and since the heater 7 is in the oil, no heat is wasted, so the oil will rise to the set temperature again in a very short time.

Therefore, tempura can be fried well using oil at a set temperature.

When removing the oil in the oil tank 4 and cleaning the oil tank 4 after using the electric fryer, the work can be easily done by removing the heater unit 5 and taking out the oil tank 4.

According to the electric fryer of the present invention as described above, by immersing the temperature-sensing element that controls the electricity supply to the heater in the oil in the oil tank, the response of the temperature-sensing element to changes in oil temperature is quickly performed. The accuracy of temperature control is improved and the range of oil temperature fluctuations is kept small, allowing you to skillfully fry tempura, etc. at the set temperature.Also, by lighting the appropriate temperature indicator lamp when the oil temperature rises to the set temperature, There is no need to make a mistake in the timing of inputting materials, and this is practically useful.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing the electric fryer according to the present invention, FIG. 2 is a sectional view of the heat-sensitive body, and FIG. 3 is an electric circuit diagram of the same. 1: Apparatus body, 3: Appropriate temperature indicator lamp, 4: Oil tank, 7: Heater, 10: Temperature sensing element.

Claims (1)

[Scope of utility model registration request] An oil tank that stores oil, a container body that houses the oil tank, a heater that heats the oil in the oil tank, and a heater that is immersed in the oil in the oil tank and controls the energization of the heater by sensing changes in oil temperature. An electric fryer comprising a temperature sensing element that maintains the temperature at a set temperature, and an appropriate temperature display lamp that is controlled by the temperature sensing element and lights up when the oil temperature rises to the set temperature.