KR101264209B1 - Overheating prevent system of cooking machine for fried food and cooking machine using the same - Google Patents

Abstract

The present invention relates to an overheat prevention system and an electric fryer of an electric fryer, comprising: a power supply unit supplying power to the electric fritter; An earth leakage circuit breaker connected to the power supply unit; A first switch unit connected to the earth leakage breaker to receive power, one terminal connected to a second switch unit, and the other terminal connected to a heater unit; A second switch unit disposed between the first switch unit and the heater unit to turn on and off therebetween; And a heater part connected to the second switch part and another terminal connected to the first switch part to receive power, wherein the first switch part includes a cut-off of the second temperature sensor. Switching is performed according to a switching signal of any one of the cut-off switches, and the second switch unit is connected to a PCB serving as a control unit, and the PCB is connected to a switching signal of any one of a first temperature sensor and a bimetal switch. A system for overheating prevention of an electric fryer is therefore provided, which is adapted to provide a switching command to the second switch section.

Description

OVERHEATING PREVENT SYSTEM OF COOKING MACHINE FOR FRIED FOOD AND COOKING MACHINE USING THE SAME}

The present invention is an electric fryer comprising an overheat prevention system of an electric fryer and a damage prevention heat pipe including the same. In more detail, the electric fryer's overheat prevention system, which ensures double and triple stability in use, which can prevent various electric accidents such as fire caused by the temperature of the electric fryer rising above a certain temperature in advance, In addition to the overheat prevention system, the bottom surface of the oil tank is spaced apart from the heat pipe by a certain distance, the damage prevention heat pipe to prevent the carbonization of fried residues deposited on the bottom of the tank and oxidation of the fried oil to keep the fried oil clean It relates to a configured electric fryer.

In general, a conventional electric fryer is composed of one or two frying tanks installed with a heater capable of heating oil at a lower end thereof, and a temperature controller is installed at the top of the frying tank so that the oil in the frying tank is heated by a temperature sensor attached to the heater. It is configured to control the temperature.

In the conventional electric fryer, there is no means to control the temperature rise in the frying tank when the temperature sensor attached to the heater breaks down, so that the oil temperature inside the frying tank rises above 270 degrees Celsius, which is a flash point, causing a fire. There was a problem.

In addition, in the conventional fryer, since the high temperature heat pipe that provides the cooking heat source and the bottom surface of the oil tank do not have a sufficient distance, the fried residue deposited on the bottom surface of the oil tank when carbonized food is carbonized by the high temperature heat pipe. The problem is that the quality of fried oil is degraded due to oxidation of the fried oil and carbonized fried residue contains carcinogens.Therefore, there was also a problem in the hygiene of fried foods.In addition, when the fried residue adheres to the heat pipe and carbonized, There was a problem that the heat pipe is damaged, such as generated.

In order to solve such a problem, according to the Republic of Korea Utility Model Registration No. 278440 (June 20, 2002 announcement), the design consists of one or two fry tanks with a heater for heating oil at the bottom, In the electric fryer to control the temperature of the oil in the frying tank by installing a thermostat configured electrically connected to the temperature sensor attached to the frying tank, the frying tank has a built-in temperature fuse with a high heat resistance protection tube in the fuse tube In the space, there is provided an overheat prevention means filled with powder-filled material with excellent thermal conductivity. When the temperature of the oil temperature heater in the fry tank rises above a certain temperature due to the failure of the temperature sensor and the temperature controller attached to the heater, Overheat prevention water, characterized in that the fuse is disconnected to cut off the power supplied to the heater An electric fryer with a stage was provided.

In other words, this design incorporates a temperature fuse in which a protection tube with excellent heat resistance is covered in a fuse tube in the frying tank, and provides an overheat prevention means filled with a powder-filled material having excellent thermal conductivity in a space, thereby causing a malfunction of the temperature sensor and the temperature controller. Due to this, when the oil temperature and the heater temperature in the fry tank rise above a certain temperature, the temperature fuse is cut off so that the power supplied to the heater is cut off, thereby ensuring the safety of use.

However, in the case of an electric fryer using such a thermal fuse, there is a problem that there is no other stability supplement means when the thermal fuse fails. Therefore, the development of electric frying machine that is more stable in use from the user's point of view and reliable in double and triple is required.

Therefore, the present invention has been made to solve the above problems, by providing a plurality of safety devices that can control the operation of the heater unit 220 when the temperature of the electric fryer rises above a certain temperature, the oil in the frying tank It is an object of the present invention to provide an electric fryer that ensures safety in use that can prevent various accidents such as a fire caused by overheating in advance.

In order to achieve the above object, according to an embodiment of the present invention; An earth leakage circuit breaker connected to the power supply unit; A first switch unit connected to the earth leakage breaker to receive power, one terminal connected to a second switch unit, and the other terminal connected to a heater unit; A second switch unit disposed between the first switch unit and the heater unit to turn on and off therebetween; And a heater part connected to the second switch part and another terminal connected to the first switch part to receive power, wherein the first switch part includes a cut-off of the second temperature sensor. Switching is performed according to a switching signal of any one of the cut-off switches, and the second switch unit is connected to a PCB serving as a control unit, and the PCB is connected to a switching signal of any one of a first temperature sensor and a bimetal switch. A system for overheating prevention of an electric fryer is therefore provided, which is adapted to provide a switching command to the second switch section.

In addition, the first temperature sensor is set to a specific temperature in the range of 70 degrees Celsius to 210 degrees Celsius according to the user's operation, and when the sensing temperature of the first temperature sensor reaches the specific temperature, It is possible to provide an off signal to the two switch units.

In addition, the bimetal switch may operate at 220 degrees Celsius so that an off signal is provided to the second switch unit through the PCB.

In addition, the cutoff switch is set such that switching occurs at a fixed temperature, and preferably, the fixed temperature of the cutoff switch is higher than or equal to the operating temperature of the bimetal switch.

In addition, the second temperature sensor is set to a specific temperature in the range of 50 degrees Celsius to 320 degrees Celsius according to a user's operation, so that when the specific temperature is reached, the first switch unit is turned off.

On the other hand, according to another embodiment of the present invention, the body having a support on the lower; An oil tank installed inside the main body and including a drain valve at a lower portion thereof; It is coupled to the top of the rear of the main body, and comprises a heater unit consisting of a power supply and a heat pipe, so that the fried residue deposited on the bottom surface of the tank is not carbonized by the heat of the heat pipe, the heat pipe and the bottom Is positioned to maintain a predetermined distance, the bottom surface of the tank is formed to be inclined, and includes a cooling unit coupled to the lower portion of the tank, the cooling unit is coupled to the air inlet and air outlet, the air outlet Provided is an electric frying machine comprising a cooling fan and comprising an overheat prevention system of the electric frying machine according to any one of claims 1 to 6.

According to the electric fryer comprising the overheat prevention system of the electric fryer of the present invention and the damage prevention heat pipe including the same, a plurality of safety that can control the operation of the heater unit 220 when the temperature of the electric fryer rises above a certain temperature By providing a device, it is possible to ensure safety in use that can prevent various accidents such as a fire caused by overheating of the oil in the frying tank.

1 is a view showing a frying machine according to an embodiment of the present invention, in particular, highlighting that the interval between the heat pipe and the bottom surface of the oil tank and the bottom surface is inclined.
Figure 2 is a view showing a cooling unit in the lower portion of the tank according to an embodiment of the present invention.
3 is a view showing a fryer further comprising an oil tank hook as an embodiment of the present invention.
Figure 4 is a view showing a heater unit further including a protective plate for protecting the heat pipe in one embodiment of the present invention.
5 is a view showing that the heater unit is rotatably coupled to the main body in one embodiment of the present invention.
6 is a result of measuring the upper and lower temperatures of the heat pipe over time.
7 is a block diagram schematically showing the overheat prevention system of the electric fryer according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a view showing a frying machine according to an embodiment of the present invention, in particular, highlighting that the interval between the heat pipe and the bottom surface of the oil tank and the bottom surface is inclined.

The heater 220 is composed of a heat pipe 122 and the power supply 121, the heat pipe 122 is placed in the interior of the oil tank 130, both ends are coupled to the power supply 121 and the heat source to the frying oil It serves to supply. It is preferable that the shape of the heat pipe 122 is a 'b' shape and the portion located on the lower surface of the oil tank 130 has a wavy shape bent to increase the amount of heat transferred to the frying oil by increasing the contact area with the frying oil. It is desirable to have.

The oil tank 130 is installed inside the main body 110 and includes a drain valve 131 to discharge the fried oil in the lower portion. The bottom surface of the oil tank 130 in which the frying residue generated when cooking the frying water is deposited and is inclined and positioned while maintaining a predetermined distance from the heat pipe 122 of the heater 220.

The conventional fryer has a distance of only 3 to 5 centimeters between the bottom surface of the oil tank and the heat pipe, so that the fried residue deposited on the bottom surface of the oil tank is carbonized by the hot heat pipe, and the frying oil is oxidized, so The degradation problem was serious. In addition, the accumulated frying chips are carbonized in the state of being adhered to a high temperature heat pipe, creating a hole in the heat pipe, causing frequent frying of the fryer due to damage of the heat pipe, and eventually shortening the life of the frying machine. Generated carcinogens, causing the sanitary problem of fried foods.

Accordingly, an embodiment of the present invention maintains a sufficient distance between the bottom surface of the oil tank 130 and the heat pipe 122, the fried dregs deposited on the bottom surface of the oil tank 130 is the hot heat pipe. It prevented carbonization by the 122 and solved the problem which occurred in the conventional fryer.

Maintaining the separation distance between the bottom surface of the oil tank 130 and the heat pipe 122 in one embodiment of the present invention is based on experimental data to be described later, rather than a simple discovery of the known art, the prior art The technical features of the present invention are not shown because those skilled in the art expected that the frying residue in the lower part of the heat pipe would move to the upper part of the heat pipe by convection even with the above separation distance.

Applicant installed a temperature detection sensor on the bottom and top of the heat pipe and operated the fryer to measure the temperature change over time. As shown in FIG. 6, the frying oil temperature in the upper portion of the heat pipe was not changed in contrast with the conventional expectation, whereas the frying oil temperature in the lower portion of the heat pipe was almost unchanged. Therefore, considering the specific gravity according to the temperature of the frying oil on the basis of the measurement result, the frying oil in the lower portion of the heat pipe is much lower than the frying oil in the upper portion of the heat pipe and the specific gravity is significantly higher, so convection does not occur in the frying oil of the lower portion of the heat pipe and the frying oil in the lower portion It can be derived that does not move to the upper portion of the heat pie. Based on the above results, the present inventors have devised the present invention by focusing on keeping the separation distance effective in preventing carbonation and frying oil oxidation of the frying residue.

The separation distance is preferably 10 centimeters or more, and may vary depending on a user's use environment (type of fried food, temperature of heat pipe during cooking, type of fried oil, etc.). In addition, the bottom surface of the oil tank 130 is formed to be inclined.

Analyzing the experimental results, it can be seen that the frying oil in the lower portion of the heat pipe is not moved to the upper portion of the heat pipe and is not used for cooking the frying water. Therefore, to reduce the capacity of the frying oil staying in the bottom of the heat pipe without being used for cooking frying water to obtain an economic effect and also to facilitate the discharge of fried residues deposited on the bottom surface of the oil tank 130 in one place ) Bottom surface is formed to be inclined.

Formation of the inclined surface is preferably formed at an angle of 45 degrees (deg), of course, may vary depending on the user's environment (mass of fried residue, the price of fried oil, etc.).

Figure 2 is a view showing a cooling unit in the lower portion of the tank according to an embodiment of the present invention.

The cooling unit 140 includes an air inlet 141, an air outlet 142, and a cooling fan 143, and is coupled to the lower portion of the oil tank 130. The air inlet 141 is preferably located in the front direction of the main body 110, it may be formed in a number, the air outlet 142 is located in the opposite direction of the air inlet 141 Preferably, the air outlet 142 is coupled to the cooling fan 143 forcibly discharging the air introduced into the air inlet 141 to the air outlet 142.

Of course, the shape, position and number of the air outlet 142 and the air inlet 141 may vary depending on the use environment.

As described above, a temperature section is generated at the boundary of the heat pipe 122, and the cooling unit 140 promotes the generation of the temperature block. The cooling unit 140 is located below the heat pipe 122 and includes fried residues. It has the effect of inhibiting the frying oil from moving upward by convection.

Incidentally, when the frying oil that is not first heated is put into the fryer and heated, the temperature compartment occurs, but the hot frying oil is discharged from the fryer and refueled through the refiner again to the fryer. Since the temperature difference of the lower part is not large, the frying oil of the lower part may be mixed with the upper part, and the frying residue may contact the heat pipe 122.

Therefore, by coupling the cooling unit 140 to the lower portion of the oil tank 130, while cooling the temperature of the frying oil of the lower portion of the heat pipe 122 more quickly and at the same time promotes the occurrence of the temperature compartment, the heat pipe 122 In order to prevent convection of the upper and lower frying oil, consequently, the frying residue is carbonized by contact with the heat pipe 122.

There may be a predetermined distance between the outer surface of the main body 110 and the oil tank 130. By providing the separation distance, it is possible to protect the user from the radiant heat of the fried oil accommodated in the oil tank 130. In the absence of the separation distance, the user may be burned by the radiant heat of the high temperature fried oil contained in the oil tank 130 when cooking.

The separation distance is preferably 5 to 10 centimeters. When the separation distance is 5 to 10 centimeters, the outer surface of the main body 110 is kept at a low temperature, and there is no risk of the user getting burned when cooking. However, when the separation distance is 10 centimeters or more, the volume of the oil tank 130 installed inside the main body 110 is reduced, so that the frying net does not enter the inside of the oil tank 130, thereby causing inconvenience in cooking. .

When the cooling unit 140 is provided, a greater synergistic effect may be obtained in keeping the outer surface of the main body 110 at a low temperature. When driving the cooling unit 140, the air between the outer surface of the main body 110 and the oil tank 130 is circulated, it is easier to maintain the outer surface of the main body 110 at a low temperature.

Adjustment handle 132 for opening and closing the drain valve 131 included in the lower portion of the oil tank 130 is preferably protruded to the outside of the main body 110 for the user's convenience.

3 is a view showing a fryer further comprising an oil tank hook as an embodiment of the present invention.

The frying machine may further include a gas gun hook 150. The oil supply hook 150 may be formed of a holder mounted on the main body 110 and an insertion hole into which the oil supply key may be inserted. The insertion hole may be made of a hollow short tube. The oil supply hook 150 is preferably mounted to the upper edge of the main body 110.

The fuel supply hook 150 may be integrally coupled to the main body 110, or may be detachable from the main body 110.

In addition, the oil supply hook 150 may be rough to the oil tank 130 rather than the main body 110.

Figure 4 is a view showing a heater unit further including a protective plate for protecting the heat pipe in one embodiment of the present invention.

The protection plate 221 is coupled to the power supply unit 121, and is positioned to block between the heat pipe portion and the frying net located at the rear portion of the oil tank 130. The protective plate 221 is preferably formed with a plurality of holes so that the fried oil in the oil tank 130 can move smoothly.

The temperature sensor for detecting the temperature of the frying oil is generally located near the heat pipe on the rear of the main body, and further includes the protection plate 221 to protect both the heat pipe 122 and the temperature sensor from the frying network. .

5 is a view showing that the heater unit 220 is rotatably coupled to the main body in one embodiment of the present invention.

The heater unit 220 includes a power supply unit 121, a heat pipe 122 or a power supply unit 121, a heat pipe 122, and a protective plate 221. The heater 220 is rotatably coupled with the main body 110, the coupling may be made by attaching a hinge 125 to the rear of the power supply 121 and the main body 110, or a pin or the like. It can be replaced with various rotating members.

Since both the heat pipe 122 and the protection plate 221 are coupled to only the power supply unit 121, when the power supply unit 121 rotates, the heater unit 220 including the heat pipe 122 and the protection plate 221. ) The whole will rotate.

The power supply unit 121 further includes a rotation knob 123 capable of rotating the heater unit 220.

In the past, since the heat pipe was fixed inside the oil tank, it was very inconvenient when trying to clean the inside of the oil tank. In particular, when cleaning the bottom of the tank, most of the heat pipe was in a wavy curve, so it was very difficult to put the cleaning tool on the bottom of the tank.

One embodiment of the present invention by rotatably deforming the heater unit 220 and the main body 110, by lifting the heater 220 by rotating using the rotary knob 123 when cleaning. As a result, the heat pipe 122 was lifted out of the oil tank to make it easy to clean the inside of the oil tank.

6 is a result of measuring the upper and lower temperatures of the heat pipe over time.

In order to increase the stability of the use of the electric fryer, the overheat prevention system described with reference to FIG. 7 is employed in the electric fryer.

7 is a block diagram schematically showing the overheat prevention system of the electric fryer according to the present invention.

The heater 220 is a part that generates heat to heat the oil in the frying tank of the electric fryer according to the present invention, and is implemented as a heat pipe that generates heat through a resistance to convert electricity into heat, wherein the heat pipe is the inside of the frying tank Placed at both ends is coupled to the power supply unit 121 via the overheat prevention system according to the present invention.

The shape of the heat pipe is preferably a 'b' shape, the portion located on the lower surface of the frying tank preferably has a wavy shape bent to increase the amount of heat transferred to the frying oil by increasing the contact area with the frying oil.

In addition, the heater 220 is preferably spaced a predetermined distance from the bottom surface of the frying tank. This is to prevent carbonization of the frying residue deposited on the bottom surface of the frying tank and oxidation of the frying oil to maintain the frying oil in a clean state, and to prevent damage of the heat pipe due to the carbonization of the frying residue on the surface of the heat pipe.

In addition, the bottom surface of the fry tank is preferably inclined shape. This is because it is easy to collect fried residues deposited on the bottom of the frying tank in one place.

The overheat prevention system of the present invention is primarily achieved by turning on and off the second switch unit 30 by the first temperature sensor 31, the bimetal switch 32, and the PCB 33 serving as a control unit. That is, the second switch unit 30 is connected to the PCB 33 which functions as a control unit, and the PCB 33 is connected to any one of the switching signals of the first temperature sensor 31 and the bimetal switch 32. Accordingly, a switching command is provided to the second switch unit 30.

Here, the first temperature sensor 31 is configured to limit the temperature of the oil inside the fry tank, the user is set to a specific temperature in the range of 70 degrees to 210 degrees Celsius according to the user's operation, the first temperature sensor ( When the sensing temperature of 31 reaches the specific temperature, the OFF signal is provided to the second switch unit 30 through the PCB 33. At this time, the temperature at which the first temperature sensor 21 is set is preferably 180 degrees Celsius to 200 degrees Celsius. This is because the temperature of oil is usually adjusted between 50 degrees Celsius and 200 degrees Celsius.

Preferably, the first temperature sensor 31 is an electronic temperature sensor, and the second switch unit 30 may be either a semiconductor switch or a mechanical switch, but is preferably a semiconductor switch.

In addition, the bimetal switch 32 operates at 220 degrees Celsius to provide an off signal to the second switch unit 30 through the PCB. Here, the bimetal switch 32 uses two metals. The bimetal switch 32 is a device capable of adjusting the temperature by using a bending property according to the temperature. An alloy of nickel (Ni) and iron (Fe) is used as a metal that does not expand well, and an alloy of nickel (Ni), manganese (Mn), iron (Fe), nickel (Ni) Alloys of molybdenum (Mo), iron (Fe), alloys of nickel (Ni), manganese (Mn), copper (Cu) and the like are various. It is widely used in all areas requiring temperature control, such as electric irons and household appliances such as electric kettles, and is also used for current limiters and automatic switchgear.

In summary, when the first temperature sensor is set to a specific temperature in the range of 70 degrees Celsius to 210 degrees Celsius according to the user's operation, the heater unit 220 is controlled to be turned off when the temperature is reached in a normal case, but the first temperature is controlled. When the sensor 31 does not operate, the second switch unit 30 may be assisted by using a mechanically bimetal switch 32 (preferably using a bimetal switch operating at a higher temperature than the first temperature sensor). Control to turn off.

Meanwhile, when any one or more of the first temperature sensor 31, the bimetal switch 32, the PCB 33, and the second switch unit 30 fail or fall into an error state, the heater unit 220 is appropriately controlled. Since there is a risk of lead to a fire accident due to the continuous rise in temperature, in order to compensate for this, the cut-off switch 21, the second temperature sensor 22 and the first switch unit 20 is used.

Looking at this in more detail, the first switch unit 20 is switched according to any one of the switching signal of the second temperature sensor 22 and the cut-off (cut-off) switch (21).

As described above, since the cutoff switch 21 is to prepare for the case where the primary first temperature sensor 31 and the bimetal switch 32 do not operate, the cutoff switch 21 switches at a fixed temperature. The fixed temperature of the cutoff switch is preferably equal to or higher than the operating temperature of the bimetal switch 32 described above. Thus, in the embodiment of the present invention, the fixed temperature of the cutoff switch 21 is preferably 220 degrees Celsius or more, which is the operating temperature of the bimetal switch 32. Of course, it can also be set to be off at 210 degrees Celsius lower than the bimetal switch 32. In addition, the cutoff switch 21 preferably has a reset function.

In addition, the second temperature sensor 22 is set to a specific temperature in a range of 50 degrees Celsius to 320 degrees Celsius according to a user's operation, so that when the specific temperature is reached, the first switch unit 20 is turned off. It is desirable to. The set temperature of the second temperature sensor 22 is usually set to a temperature lower than the bimetal switch 32 to ensure safety before the bimetal switch 32, or to a temperature higher than the bimetal switch 32 to set the bimetal. If the switch 32 does not operate, it may be made to operate complementarily.

Here, the second temperature sensor 22 is preferably a mechanical temperature sensor, and the first switch unit 20 may be either a semiconductor switch or a mechanical switch, but is preferably a mechanical switch.

In addition, by utilizing the ground fault circuit breaker 50, the electric power of the electric fryer can be completely released, and when a specific temperature is reached, a circuit for intentionally generating a leakage current to operate the ground fault circuit breaker 50 may be additionally arranged. It may be.

As described above, the overheat prevention system of the electric fryer according to the present invention includes a first temperature sensor 31 configured in the second switch unit 30, a bimetal switch 32, and a second temperature sensor configured in the first switch unit 20. The 22 and the cut-off switch 21, the circuit breaker 50, even if some of the components failure or operation error occurs, complementary to each other, that is, by using a double, triple precision temperature control method to ensure stability in use And it is possible to provide an overheat prevention system of the electric fryer secured reliability.

On the other hand, according to another embodiment of the present invention, the body having a support on the lower; An oil tank installed inside the main body and including a drain valve at a lower portion thereof; It is coupled to the top of the rear of the main body, and comprises a heater unit consisting of a power supply and a heat pipe, so that the fried residue deposited on the bottom surface of the tank is not carbonized by the heat of the heat pipe, the heat pipe and the bottom Is positioned to maintain a predetermined distance, the bottom surface of the tank is formed to be inclined, and includes a cooling unit coupled to the lower portion of the tank, the cooling unit is coupled to the air inlet and air outlet, the air outlet In the electric fryer having a cooling fan, the overheat prevention system of the electric fritter described above with reference to FIG. 7 may be included.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

20 first switch
21 cutoff switch
22 2nd temperature sensor
30 2nd switch
31 1st temperature sensor
32 bimetal switch
40 heater
50 earth leakage breaker
100 electric fryer
110 main body
121 Power Supply
122 heatpipe
123 turn knob
125 hinges
130 tank
131 drain valve
132 adjustable handle
140 Cooling Unit
141 Air inlet
142 Air outlet
143 cooling fans
150 pet gun hook
220 heater part including protection board
221 shield

Claims (7)

In the electric fryer including an overheat prevention system,
A main body having a support on a lower side thereof;
An oil tank installed inside the main body and including a drain valve at a lower portion thereof;
It is coupled to the upper rear of the main body, and comprises a heater unit consisting of a power supply and a heat pipe,
The bottom surface of the tank and the heat pipe are positioned to maintain a predetermined distance so that the fried residue deposited on the bottom surface of the tank is not carbonized by the heat of the heat pipe, and the bottom surface of the tank is inclined.
Includes a cooling unit coupled to the lower portion of the oil tank, wherein the cooling unit has an air inlet and an air outlet, a cooling fan coupled to the air outlet,
The overheat prevention system
A power supply unit for supplying power to the electric fryer;
An earth leakage circuit breaker connected to the power supply unit;
A first switch unit connected to the earth leakage breaker to receive power, one terminal connected to a second switch unit, and the other terminal connected to a heater unit;
A second switch unit disposed between the first switch unit and the heater unit to turn on and off therebetween; And
One terminal is connected to the second switch unit, and the other terminal is connected to the first switch unit;
The first switch unit is switched according to any one of the switching signal of the second temperature sensor and the cut-off (cut-off) switch,
The second switch unit is connected to a PCB functioning as a control unit, wherein the PCB is configured to provide a switching command to the second switch unit according to the switching signal of any one of the first temperature sensor and the bimetal switch. Electric fryer comprising a. The method of claim 1,
The first temperature sensor is set to a specific temperature in the range of 70 degrees Celsius to 210 degrees Celsius according to the user's operation, and when the sensing temperature of the first temperature sensor reaches the specific temperature, a second switch through the PCB An electric fryer comprising an overheat prevention system, characterized in that the off signal is provided to the unit. The method of claim 2,
The bimetal switch is operated at 220 degrees Celsius, the electric fryer including an overheat prevention system, characterized in that the off signal is provided to the second switch unit through the PCB. The method of claim 3, wherein
And the cutoff switch is configured to cause switching at a fixed temperature. The method of claim 4, wherein
And a fixed temperature of the cutoff switch is greater than an operating temperature of the bimetal switch. The method of claim 5, wherein
The second temperature sensor is set to a specific temperature in the range of 50 degrees Celsius to 320 degrees Celsius according to a user's operation, so that when the specific temperature is reached, the first switch unit is turned off. Electric fryer included.


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