JPS6027531B2 - Heater immersion fryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to the configuration of the temperature detection sensor of a heater-immersion flier that directly heats the oil and directly detects the oil temperature by directly inserting a sheathed heater and a temperature detection sensor into the oil. It is.

Conventionally, in most of the sensor configurations of this type of heater-equipped flier, oil is filled to a predetermined height and the temperature of the oil is controlled in that state.

With this configuration, there is no problem if the specified amount of oil is contained, but if the oil becomes significantly low due to abnormal use and the heat generating part of the sheathed heater is exposed to the air, the temperature of the exposed part of the sheathed heater will become abnormal. This causes the problem that the oil that comes into contact with that part is burnt and the oil deteriorates more quickly. The present invention solves the above problems by providing temperature resistance conversion elements at the tip of the temperature detection sensor and at a portion of the temperature detection sensor located near the oil surface, and the normal oil temperature is determined by the temperature resistance element at the tip. The present invention provides a configuration in which the temperature resistance conversion element located near the oil level turns off the power when the oil level drops and the sheathed heater generates abnormal heat.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 3.

Although not shown in the drawings, FIG. 1 schematically shows the configuration of a heater and a sensor that are provided in the main body in an appropriate manner. 1 is a sheathed heater, which is formed into a U-shape when viewed from above.

Reference numeral 2 denotes a temperature detection sensor, and as shown in FIG. 3, a protective cover 3 and a temperature resistance conversion element 4 such as a thermistor having a negative characteristic are appropriately incorporated in the inner tip of the protective cover 3.

This thermistor 4 detects the oil temperature, and is fixed so as to be located at the center of the U-shape of the sheathed heater 1, as shown in FIG.

Furthermore, a temperature resistance converting element 5 such as a thermistor is built into the upper part of the inside of the protective cover 3.

The height in the figure usually means the specified oil height (approximately 4 feet).

The sheathed heater 1 and the temperature detection sensor 2 are positioned by a fixture 6 that positions them at an appropriately lower level than the oil height. This fixture 6 also serves to transfer heat from the sheathed heater 1 to the temperature detection sensor 2. As shown in FIG. 2, the coil 7 inside the sheathed heater is naturally treated at a predetermined oil height H or less, and under normal usage conditions, there is no possibility of abnormal heat generation in the sheathed heater located on the oil level. Furthermore, the fixture 6 is positioned to sandwich the thermistor 5.

That is, the lower surface height of the fixture 6 is normally in the relationship H>h, as shown by h in the figure. Further, the relationship between the operating temperatures of the thermistors 4 and 5 is set such that the operating temperature of the upper thermistor 5 is higher than the maximum operating temperature of the lower thermistor 4.

In the above configuration, when the oil height is greater than the lower surface height h of the fixing fitting 6, the sheathed heater 1 in contact with the oil surface does not generate abnormal heat and does not burn the oil or accelerate the damage of the oil.

Next, when the oil decreases and the oil height becomes less than the lower surface height h of the fixture 6, the coil 7 of the sheathed heater 1 comes out above the oil. I end up.

That is, since the sheathed heater 1 is exposed from the oil, abnormal heat generation occurs, and heat is transferred from the fixing metal fitting 6 to the thermistor 5 of the temperature detection sensor 2, which causes the main power to be turned off (not shown). . As is clear from the above description, according to the present invention, by quickly detecting abnormal heat generation in the sheathed heater and stopping the energization, it is possible to obtain the effect of not only preventing oil from burning and spoiling, but also preventing the occurrence of a fire.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a sensor unit, a sheathed heater of a flier with heater function, showing an embodiment of the present invention, Fig. 2 is a sectional view of the sheathed heater, and Fig. 3 is a sectional view of the sensor. . 1... Sheathed heater, 2... Temperature detection sensor, 4, 5... Temperature resistance conversion element. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. In a heater-immersion type fryer that directly heats the oil and directly detects the oil temperature by inserting a heater and a temperature detection sensor into the oil, a temperature resistance conversion element is provided at the tip of the temperature detection sensor and near the oil surface. What is claimed is: 1. A heater immersion fryer characterized in that a heat transfer member is provided for transferring heat from the heater to a temperature resistance conversion element located near the oil surface.