KR200264983Y1 - Apparatus for automatically controlling temperature of cooker - Google Patents

Abstract

A thermostat for an electric cooker is disclosed. Such a thermostat includes a body to which an electric cord is connected, a plug which protrudes in front of the body and is coupled to an electric cooker to supply power, and is embedded in the tip of the plug to sense a temperature inside the electric cooker. A temperature sensor, an operation panel mounted on the body to receive a temperature signal from the temperature sensor, to set and reserve the temperature and time of the electric cooker, and a temperature fuse connected to the operation panel to prevent overcurrent Include.

Description

Thermostat for electric cooker {APPARATUS FOR AUTOMATICALLY CONTROLLING TEMPERATURE OF COOKER}

The present invention relates to a temperature controller of an electric cooker, and more particularly, to a temperature controller of an electric cooker capable of adjusting and reserving temperature and time by mounting a temperature sensor and preventing overheating by a temperature fuse. .

In general, an electric cooker is a kitchen utensil for cooking food by heating food and seasoning. The electric cooker includes a cooking vessel for accommodating food and a temperature controller for supplying electricity to the cooking vessel and for controlling temperature. And, such a temperature controller is detachably assembled to one side of the cooking vessel. Therefore, when used in combination with the temperature controller when cooking, after use is stored separately.

However, the temperature controller uses a bimetal temperature control method using the difference in thermal expansion coefficient of the metal. Therefore, setting and reservation of temperature and time is impossible. In addition, a temperature deviation occurs due to the physical properties of the bimetal, and there is a problem in that the durability is weak because there is a limit in the lifetime.

In addition, such a temperature controller does not have a safety device that can prevent overheating due to overload, etc., so there is a risk of fire.

An object of the present invention is to solve the above problems, by installing a temperature sensor and a temperature fuse connected to the control unit, the temperature and time can be set, reserved, automatic temperature for the electric cooker can prevent overheating To provide a regulator.

1 is a perspective view showing an electric cooker equipped with an electronic thermostat according to a preferred embodiment of the present invention.

2 is a plan view of the electronic thermostat shown in FIG.

3 is a block diagram of the electronic thermostat shown in FIG.

4 is a circuit diagram of the electronic thermostat shown in FIG.

In order to realize the object of the present invention, a preferred embodiment of the present invention is the body to which the electric cord is connected; A plug which protrudes in front of the body and is coupled to an electric cooker to which power is applied; A temperature sensor embedded in the distal end of the plug to sense a temperature inside the electric cooker; An operation panel mounted on the body to receive a temperature signal from the temperature sensor and to set and reserve the temperature and time of the electric cooker; And it is connected to the operation panel provides a thermostat for an electric cooker including a temperature fuse to prevent overcurrent.

According to a preferred embodiment of the present invention, the operation panel includes an input unit for inputting data, a control unit for performing a calculation by the data input from the input unit and the temperature sensor, a display unit for displaying the output from the control unit and It includes a power supply for supplying power. The temperature sensor includes a temperature sensor of a negative temperature coefficient (NTC) method.

The input unit also includes a heating switch, a warming switch, a reservation switch, and a rising and falling switch. The output unit may include a display window in which a result value is displayed digitally, a heating lamp, a reservation lamp, and a power lamp.

When the reservation switch is pressed once, the time is displayed on the display window, when it is pressed once more, the temperature is displayed, and when it is pressed again, the cooking time is displayed. It is adjustable.

Hereinafter, with reference to the accompanying drawings will be described in detail an electronic thermostat for an electric cooker according to a preferred embodiment of the present invention.

As shown in FIG. 1, the electric cooker proposed by the present invention includes a cooking container 1 for receiving food and an automatic temperature controller 2 for supplying electricity to the cooking container 1 and adjusting temperature. . In addition, the thermostat 2 is detachably assembled to the slot 3 formed on one side of the cooking vessel 1. Therefore, during cooking, power is supplied by combining the thermostat (2), and after use, it is stored separately.

2 shows a plane of such a thermostat. The thermostat 2 is provided with a body 5 to which the electric cord 4 is connected at the rear, and a plug 6 protrudes in front of the body 5. In addition, the plug 6 is coupled to one side of the cooking vessel 1 to supply power to the cooking vessel 1.

Inside the tip of the plug 6 there is a temperature sensor 7 is embedded, the temperature sensor 7 is connected to the operation panel 8 disposed on the upper surface of the body (5). Therefore, the user can set, adjust, and make a reservation of the temperature and time of the electric cooker by operating the operation panel 8. It is also possible to keep warm.

3 and 4 show the structure and circuit diagram of the thermostat. As shown, the operation panel 8 includes a control unit 9, which is a BBIT microcontroller having a converter function.

The temperature sensor 7 is connected to the controller 9 so that the internal temperature of the electric cooker is input to the controller 9 as a temperature signal.

The temperature sensor 7 preferably uses a temperature sensor 7 of a negative temperature coefficient (NTC) type, and the resistance coefficient is changed according to the sensed temperature, and the changed value is input to the controller 9. Thus, the controller 9 can appropriately control the temperature by recognizing the change in temperature.

For example, when the internal temperature of the electric cooker is set to 70 degrees, the control unit 9 receives a signal input from the temperature sensor 7 and compares the target value with 70 degrees. If the temperature is 70 degrees or more, the temperature is lowered by outputting a signal to the power supply unit 24 to cut off the power supply. If the temperature is 70 degrees or less, the temperature is increased by supplying power. Through this process, the actual temperature is adjusted to the target temperature.

In addition, the input unit 10 and the display unit 11 are connected to the control unit 9 to input necessary information or display a result value.

The input unit 10 includes a reservation switch 12, a heating switch 13, a warm switch 14, a rising switch 15, and a falling switch 16.

Therefore, when the switch is operated, the resistance value is changed from the "Low" state to the "High" state and the signal is input to the control unit 9 so that the control unit 9 recognizes whether the switch is operated and the corresponding output value is It is displayed through the display unit 11.

In addition, the display unit 11 includes a character display window 17, a power lamp 18, a heating lamp 19, and a reservation lamp 20. The display window 17 is composed of an LED element for displaying the result value digitally, preferably a 3-Digit LED element.

The power supply lamp 18, the heating lamp 19, and the reservation lamp 20 also consist of LED elements. Accordingly, the result is displayed on the display unit 11 by the result value output from the control unit 9 and the display lamp flashes.

In the input unit 10 and the display unit 11 having such a structure, the heating switch 13 is pressed when an electric cooker is to be used. When the heating switch 13 is pressed, a temperature of 100 degrees is automatically displayed, the heating lamp 19 is turned on, and heating is started in the electric cooker. At this time, by pressing the rising switch 15 or the lower switch 16, the cooking temperature during heating can be adjusted. Further, even when heating, pressing the thermal switch 14 automatically displays 70 degrees.

When the heating switch 13 is pressed again, all functions are stopped and the electric cooker is turned off.

When the reservation switch 12 is pressed once, the time is displayed on the display unit 11 and the time reservation lamp 21 is turned on. Of course, the time can be adjusted with the up or down switch (15, 16).

When the reservation switch 12 is pressed again, the temperature is displayed and the temperature lamp 22 is turned on. In this case, the temperature may be adjusted by the up or down switches 15 and 16.

When the reservation switch 12 is pressed again, the time is displayed and the cooking time lamp 23 is turned on. Cooking time can be adjusted with the up or down switch (15, 16).

Meanwhile, a double safety device, that is, a temperature fuse 25 is connected to the power supply unit 24. The thermal fuse 25 detects a high heat when the excessive power is applied to the power supply unit 24 so as to overload and cuts off the power. Therefore, it is possible to prevent the risk of fire due to high heat in the electronic thermostat (2).

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the electronic thermostat for an electric cooker according to a preferred embodiment of the present invention.

As shown in Figures 1 to 4, when cooking using an electric cooker, the electronic thermostat is first inserted into the slot (3) formed on one side of the cooking vessel (1). At this time, the front end of the electronic thermostat is connected to a heating wire (not shown) disposed inside the cooking vessel (1).

When the heating switch 13 is pressed in this state, power is supplied from the power supply unit 24 by the signal of the control unit 9 and supplied to the heating line (not shown) of the cooking vessel 1 through the plug 6. . Therefore, cooking is possible by heating the heating wire (not shown).

At this time, the display window 17 automatically displays a temperature of 100 degrees and the heating lamp 19 is turned on. When the heating state continues and the temperature of the electric cooker reaches 100 degrees, the temperature sensor 7 of the tip of the plug detects this and outputs a signal to the controller 9.

For example, the controller 9 receives a signal input from the temperature sensor 7 and compares it with a target value of 100 degrees. When the temperature is 100 degrees or more, the temperature is lowered by outputting a signal to the power supply unit 24 to reduce the power supply amount, and when the temperature is 100 degrees or less, the temperature is increased by increasing the power supply amount. Through this process, the actual temperature is adjusted to the target temperature.

In addition, when it is necessary to raise or lower the temperature of the electric cooker during heating, the temperature can be adjusted by pressing the up and down switches 15 and 16. And even if it heats, if the heat insulation switch 14 is pressed, 70 degree | times will be displayed automatically.

The food is cooked through the heating process as described above, and when the cooking is completed, all functions are stopped by pressing the heating switch 13 again to turn off the electric cooker.

On the other hand, it is also possible to cook using the reservation function. That is, when the reservation switch 12 is pressed once, the time is displayed on the display unit 11 and the time reservation lamp 21 is turned on. At this time, the user can reserve the desired time by pressing the up or down switch (15, 16). Therefore, even if the electric cooker does not operate by the user, a signal is output from the control unit 9 when the scheduled time comes to automatically cook.

When the temperature is to be reserved, the reservation switch 12 is pressed again. When the reservation switch 12 is pressed, the temperature is displayed on the display window 17 and the temperature lamp 22 is turned on. Thus, the user can operate the rising or falling switches 15 and 16 to set and reserve the desired temperature.

When the cooking time is to be reserved, the reservation switch 12 is pressed again. Then, the cooking time is displayed on the display window 17 and the cooking time lamp 23 is turned on. Therefore, the user can input the desired cooking time with the up or down switch (15, 16).

In addition, when the power supply unit 24 is overheated due to an overload, the temperature fuse 25 operates to cut off the power to prevent overheating.

As such, the electronic thermostat of the electric cooker according to the preferred embodiment of the present invention has a convenience in use because it can automatically adjust the heating temperature of the electric cooker to a desired temperature by having a temperature sensor and a controller.

In addition, the cooking time, cooking temperature, etc. can be booked, there is an advantage to improve the food culture.

In addition, by installing the temperature fuse, it is possible to reduce the risk of fire by preventing high heat generation due to overcurrent.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the utility model registration request and the detailed description of the invention and the scope of the accompanying drawings. Of course, this also belongs to the scope of the present invention.

Claims (6)

A body to which the electric cord is connected; A plug which protrudes in front of the body and is coupled to an electric cooker to which power is applied; A temperature sensor embedded in the distal end of the plug to sense a temperature inside the electric cooker; An operation panel mounted on the body to receive a temperature signal from the temperature sensor and to set and reserve the temperature and time of the electric cooker; And A thermostat for an electric cooker comprising a temperature fuse connected to the operation panel to prevent overcurrent. The control panel of claim 1, wherein the operation panel comprises an input unit for inputting data, a control unit for performing calculation based on data input from the input unit and the temperature sensor, a display unit for displaying a result output from the controller, Thermostat for an electric cooker comprising a power supply for supplying. The thermostat of claim 1, wherein the temperature sensor comprises a temperature sensor of a negative temperature coefficient (NTC) type. The thermostat of claim 2, wherein the input unit comprises a heating switch, a warming switch, a reservation switch, and a rising and lowering switch. The thermostat of claim 2, wherein the output unit comprises a display window in which a result value is digitally displayed, and a heating lamp, a reservation lamp, and a power lamp. The method of claim 4 or 5, wherein when the reservation switch is pressed once, the time is displayed on the display window, when it is pressed once more, the temperature is displayed, and when it is pressed again, the cooking time is displayed, and the rising and Thermostat for an electric cooker capable of adjusting the time, temperature, cooking time by pressing the down switch.