KR20070078283A - Fan control method and electronic cooker with the same - Google Patents

Abstract

A fan control method and an electronic cooker using the same are provided to stop the operation of the fan at a prescribed time before the completion of cooking by calculating a cooking time. A fan control method and an electronic cooker using the same include the steps of: checking if a cooking menu selection order is inputted through a key pad by an user(S10); displaying a menu from a memory for selection when the cooking menu selection order is inputted(S20); setting a cooking time at an internal timer by the cooking time of a selected menu(S30); checking if a cooking information input order is inputted by the user(S12); getting a cooking information through the key pad by the user when the cooking information input order is inputted(S13); setting the cooking time at the internal timer according to the cooking time among the inputted cooking information(S14); checking if a food is inside a cooking room by using a weight sensor(S16); deciding the cooking time, a cooking temperature, and a heating method according to a weight signal, a temperature signal, a humidity signal, and a pressure signal from a temperature sensor, a humidity sensor, and a pressure sensor when the food is inside the cooking room(S17); setting the calculated cooking time at the internal timer(S18); checking if a cooking start order is inputted through the key pad after step 30, 14, and 18(S40); checking a cooking information release order is inputted(S42); and releasing the cooking information when the cooking information release order is inputted(S44).

Description

Fan control method and electronic cooking device using the same {Fan Control Method and Electronic Cooker with the same}

1 is a flowchart illustrating a cooking operation including a fan control method of an electronic cooking apparatus according to an embodiment of the present invention step by step.

FIG. 2 is a diagram schematically illustrating an electronic cooking apparatus for performing a cooking operation including the fan control method illustrated in FIG. 1.

`` Explanation of symbols for main parts of drawings ''

100: microcomputer 110: keypad

122,124,126,128: sensor 130: display device

140: memory 152, 154: heater

172: convection fan 182: cooling fan

The present invention relates to a cooking control method of an electronic cooking apparatus, and more particularly, to a fan control method of an electronic cooking apparatus for calculating a cooking time and stopping driving of a fan before a predetermined time period ends.

In general, an electronic cooking device receives a power source to heat a cooking material, thereby performing a cooking operation. Electronic cooking appliances are equipped with a magnetron for generating microwaves and a sheath heater and a halogen heater for heating the cooking material using resistance values.

The electronic cooking apparatus selects a stored cooking menu, receives cooking information from a user, or calculates a cooking time by using detection signals of sensors installed in the cooking room.

The electric cooking apparatus of the convection function which heats the cooking material by circulating heat from the heater is used when the door is opened during the cooking operation or when a cancel command of the cooking operation is input, and when the cooking is completed after the cooking time is completed. Stop the convection fan.

In the conventional electronic cooking apparatus, when the cooking operation is completed, the driving of the convection fan is stopped at the same time as the driving of the heaters is finished. Accordingly, the user of the conventional electronic cooking apparatus feels the heat inside the cooking chamber circulated by the convection fan when the cooking is completed and the door is opened. As a result, the conventional electronic cooking apparatus gives a user an unpleasant feeling due to heat, and in particular, when the remaining heat is a high temperature, a safety accident such as a burn is caused.

Accordingly, an object of the present invention is to provide a fan control method of an electronic cooking apparatus suitable for preventing heat from blowing when the cooking chamber door is opened when cooking is completed.

Another object of the present invention is to provide an electronic cooking apparatus using a fan control method suitable for preventing the heat from blowing when cooking is completed and the cooking chamber door is opened.

According to an aspect of the present invention, there is provided a fan control method of an electronic cooking device, the method comprising: setting a timer by calculating a cooking time; Performing cooking by driving a heating apparatus, a convection fan, and a cooling fan for a predetermined time according to a cooking start command; And stopping driving of the convection fan and the cooling fan before the cooking time ends.

The cooking time calculating step includes checking whether a cooking menu is selected, and calculating cooking time according to the selected cooking menu.

The cooking time calculating step includes checking whether to input cooking information, and calculating cooking time among the input cooking information.

The cooking time calculating step includes detecting whether the cooking material is put into the cooking chamber, sensing the state of the input cooking material and the cooking chamber, and calculating the cooking time according to the detected signal.

Electronic cooking apparatus using a fan control method according to an embodiment of the present invention for achieving the above object is a heater for heating the cooking material; A convection fan circulating hot air heated by heaters; Cooling fan to cool the inside of the electric compartment; And a control unit which drives the heater and the convection fan to perform cooking, drives the cooling fan to cool the electric room, calculates the cooking time, and stops the operation of the convection fan and the cooling fan before a certain time is completed. do.

Other objects, other advantages and other features of the present invention in addition to the objects of the present invention as described above will become apparent from the detailed description of the preferred embodiment with reference to the accompanying drawings.

Hereinafter, the preheating method of the electronic cooking apparatus according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a cooking operation including a fan control method of an electronic cooking apparatus according to an embodiment of the present invention step by step. The cooking operation of the electronic cooking apparatus is performed by the microcomputer 100 shown in FIG. FIG. 2 is a diagram schematically illustrating an electronic cooking apparatus for performing a cooking operation including the fan control method illustrated in FIG. 1. 2, there are not shown components that are not directly related to the present invention and may confuse or confuse the gist of the present invention, those skilled in the art will include the problem and technical solutions according to the description only It will be clearly understood the technical scope and spirit of the present invention.

The electronic cooking apparatus shown in FIG. 2 includes a heating device 150 for heating a cooking material, a keypad 110 for receiving a cooking command, cooking information, and a cooking menu from a user, and a cooking state, a cooking menu, and the like. It is provided with a display device 130 for displaying. In addition, the electronic cooking apparatus includes a memory 140 in which cooking information, a cooking operation, and a cooking menu are stored, a turn table 162 for rotating the cooking material to be heated evenly, and a convection fan for circulating the heated air from the heaters. 172, and motors 160, 170, and 180 for driving the cooling fan 182 for circulating the air in the battlefield, and a sensor unit 120 for sensing a state of the cooking material and the cooking chamber. In addition, the heating device 150 or the motors 160 and 170 may be uploaded by uploading commands input from the keypad 110 or cooking information stored in the memory 140 or according to a detection signal input from the sensor unit 120. And microcomputer 160 to control cooking and display on the display device 130.

The keypad 110 may include keys for setting cooking operations by receiving cooking information from a user or selecting a cooking menu.

The sensor unit 120 includes a weight sensor 126 for detecting a weight of a cooking material, a temperature sensor 122 for detecting a temperature of a cooking chamber, a humidity sensor 124 for detecting humidity of a cooking chamber, and a pressure of a cooking chamber. It includes a pressure sensor 128 for sensing.

The display device 130 recently used a liquid crystal display (LCD) to display a cooking menu, cooking information, and cooking information in various colors and clear image quality.

The memory 140 stores a cooking menu and corresponding cooking information, so that cooking can be performed by uploading the cooking menu or cooking information under the control of the microcomputer 100.

The heating device 150 includes a sheath heater 152, a halogen heater 154, and a magnetron 156. Under the control of the microcomputer 100, the heating device 150 selectively drives the heaters 152 and 154 or the magnetron 156 necessary for cooking to cook the cooking material.

In addition, the electronic cooking apparatus is provided with a turn table 162, a convection fan 172, and a cooling fan 182 connected to the motors 160, 170, and 180. When the microcomputer 100 drives the heating device 150 to perform a cooking operation, the microcomputer 100 controls the driving power supplied to the motors, such that the turn table 162, the convection fan 172, and the cooling fan 182 are used. To control.

In the tenth step S10 of FIG. 1, the microcomputer 100 checks whether a command for selecting a cooking menu is input from the user through the keypad 110. When the cooking menu selection command is input, the microcomputer 100 receives the cooking menu from the memory 140 by displaying the cooking menus on the display device 130 (S20).

In a thirtieth step (S30), the microcomputer 100 sets the cooking time to a timer inside thereof according to the cooking time of the selected cooking menu. Accordingly, the timer counts time for the set cooking time.

When a command not requiring cooking menu selection is input in step 10 (S10), the microcomputer 100 checks whether a command for inputting cooking information is input from the user in step 12 (S12). When the cooking information input command is input, the microcomputer 100 receives cooking information from the user through the keypad 110 (S13). In this case, the cooking information includes a cooking time, a cooking temperature, and a heating method. Subsequently, the microcomputer 100 sets a cooking time of the input cooking information to a timer inside thereof (S14).

When a command that does not require cooking information input is input in the twelfth step S12, the microcomputer 100 understands the sensor cooking process according to the cooking material and the cooking chamber state in the sixteenth step S16, and the weight sensor. Use (126) to check whether cooking materials have been put into the cooking chamber. Subsequently, when it is confirmed in step 17 that the cooking material is introduced into the cooking chamber, the microcomputer 100 receives the weight sensing signal WS of the cooking material from the weight sensor 126 and the temperature sensor ( 122, the humidity sensor 124 and the pressure sensor 128 are applied with the temperature, humidity, and pressure detection signals TS, HS, and PS inside the cooking chamber, and applied sensing signals WS, TS, HS, PS) determines cooking time, cooking temperature and heating method. In the electronic cooking apparatus according to the embodiment of the present invention, the temperature sensor 122 uses a thermistor (Thermister, thermally sensitive resiser) to change the resistance value of the thermistor. Accordingly, the microcomputer 100 recognizes the temperature according to the voltage level of the signal applied from the thermistor. A piezo sensor is used as the pressure sensor 128. Subsequently, the microcomputer 100 sets the calculated cooking time to a timer inside thereof (S18).

Subsequently to the thirtieth step S30, the fourteenth step S14, and the eighteenth step S18, the microcomputer 100 checks whether a cooking start command is input through the keypad 110 (S40). When a command not requiring cooking start is input, the microcomputer 100 checks whether a command for releasing the set cooking information is input in step 42 (S42), and releases the set cooking information when a releasing command is input. (S44).

In an embodiment of the present invention, a convection cooking function for cooking using the heaters 152 and 154 is performed. While the convection cooking is in progress, the convection pan 172 and the cooling fan 182 are driven. Accordingly, when a cooking start command is input in step 40 (S40), the microcomputer 100 drives the heaters 152 and 154 according to the set cooking information, and simultaneously applies power to the convection fan motor 170. The fan 172 is driven to allow heat from the heaters 152 and 154 to circulate inside the cooking chamber. As a result, the cooking material is evenly heated. In addition, the microcomputer 100 drives the cooling fan 182 by applying driving power to the cooling fan motor 180 in order to protect components installed in the electronic room, so that the interior of the electronic room is not higher than a predetermined temperature. Inflow of cold air or exhaust heat (S50). The thermostat is installed inside the battlefield. The thermostat performs a switching operation according to the temperature inside the electric room, and according to the switching operation of the thermostat, the microcomputer 100 controls the driving of the cooling fan 182 on-off.

In operation 60, the microcomputer 100 waits until it reaches 10 seconds before the timer expires. If the timer reaches 10 seconds before the timer expires, the microcomputer 100 stops driving the convection fan 172 and the cooling fan 182 (S70).

Subsequently, in step 80, the microcomputer 100 waits until the timer expires, and when the timer expires, the microcomputer 100 stops driving the heaters 152 and 154 to complete cooking and simultaneously displays the display device 130. The completion of cooking is displayed on the screen so that the user can take out the cooked food.

In this way, the microcomputer 100 calculates the cooking time during the cooking operation and stops driving the convection fan 172 and the cooling fan 182 before a predetermined time (for example, 10 seconds) before the calculated cooking time ends. Thus, after the cooking is finished, the heat inside the cooking chamber is blocked from being circulated. In the embodiment of the present invention, but is set to 10 seconds before the end of cooking, which is a time set arbitrarily, it is preferable that the change is set according to the change in the heating temperature or cooking conditions of the electronic cooking appliance.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, and a person of ordinary skill in the art without departing from the spirit and scope of the present invention. It will be apparent that various modifications, changes, and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, the fan control method and the electronic cooking apparatus using the same according to an embodiment of the present invention calculate the cooking time by using the detection signal or the cooking information from the sensing sensors to drive the fan a predetermined time before the end of cooking. You can stop. Accordingly, the user of the electronic cooking appliance can prevent the heat from blowing to the user when cooking is finished and the door is opened. As a result, the fan control method and the electronic cooking apparatus using the same according to an embodiment of the present invention can prevent safety accidents and discomfort such as burns of the user due to heat when cooking is completed and the door is opened.

Claims (5)

In the fan control method of the electronic cooking apparatus having a heating device, a convection fan for circulating the heated air in the cooking chamber, and a cooling fan for circulating the air in the electrical equipment room, Setting a timer by calculating a cooking time; Performing cooking by driving a heating apparatus, a convection fan, and a cooling fan for a predetermined time according to a cooking start command; And Stopping the driving of the convection fan and the cooling fan a predetermined time before the cooking time ends, characterized in that the fan control method of the electronic cooking appliance. The method of claim 1, wherein the cooking time calculating step Checking whether the cooking menu is selected, and Comprising a step of calculating the cooking time according to the selected cooking menu. The method of claim 1, wherein the cooking time calculating step Checking whether to input cooking information, and Comprising a step of calculating the cooking time of the input cooking information. The method of claim 1, wherein the cooking time calculating step Detecting whether cooking materials are put into the cooking chamber, Sensing the input cooking material and the state of the cooking chamber, and And a step of calculating a cooking time according to the sensed signal. In the electronic cooking apparatus having a heating device, a convection fan for circulating the heated air in the cooking chamber, and a cooling fan for circulating the air in the electrical equipment room, Heaters for heating the cooking material, Convection fan to circulate the heat heated by the heaters, A cooling fan that cools the interior of the battlefield, and In addition to performing cooking by driving the heater and the convection fan, and driving the cooling fan to cool the electrical room, calculate the cooking time to stop the driving of the convection fan and the cooling fan before a certain time before the end of cooking. Electronic cooking apparatus using a fan control method comprising a control unit.

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