KR100952114B1 - Steam control method of steam convection oven - Google Patents

Abstract

PURPOSE: A steam control method for a steam convection oven is provided to supply steam to a cooking chamber with the fixed amount according to the temperature of the cooking chamber without a sensor. CONSTITUTION: A cooking time, cooking temperature, cooking humidity and a suit mode are inputted to a controller through an input unit(S100). A convection fan revolves with an output signal of the controller through a convection fan driving part(S200). The heat generated by the heat driving part is supplied and circulated to and in a cooking chamber(S300). When the hot air circulates, the created steam is provided through the heat driving part to the cooking chamber(S400). The steam is comparing the humidity setting temporal value of cavity with humidity progress time value continually created, or the steam opening eastern is suspended(S500). In the state where the steam opening eastern is suspended, the vent connected according to the signal of controller to the vent port eastern is opened and the steam is exhausted(S600). In the state where the steam is exhausted through the steam evacuation stage, it is marked on the state display to be completed according to the output signal of controller(S700).

Description

Steam control method of steam convection oven

The present invention relates to a steam control method for a steam convection oven, and in particular, the amount of steam consumed in the process of cooking food using the steam convection oven, the humidity progress time according to the cooking time and the humidity setting time and the cooking chamber It is controlled by temperature.

In general, a large amount of moisture is evaporated by hot air in the process of cooking food using an oven, causing the food to be tasteless and discolored.

In order to suppress the evaporated moisture, the food is usually cooked in a wrap or tinfoil or packaging container, but this causes a lot of inconvenience and inconvenience to the user.

In order to solve such causes, a steam convection oven having a combination mode that allows hot air and steam to be supplied and circulated to the cooking chamber has been proposed, and the proposed steam convection oven has a temperature difference and a pressure, that is, a wind pressure difference inside and outside the cooking chamber. The steam supplied to the cooking chamber is controlled by using the data value.

However, such a steam convection oven has a problem in that cost is increased and cost is increased as a process of detecting means for detecting temperature and wind pressure difference in a cooking chamber is required, and thus a spraying or feeding device is required. there was.

In addition, in the process of supplying steam to the cooking chamber, there is a concern that the temperature pressure in the cooking chamber may be changed by an external variable, so that it is difficult to supply a constant amount of steam, thereby resulting in an irregular food.

The present invention allows a constant amount of steam to be supplied into a cooking chamber in which food is cooked without using a detection means for detecting a temperature and wind pressure difference in the cooking chamber in which the temperature and pressure are always variable.

The present invention provides a steam control method for steam convection oven in which food is cooked using heat and steam, wherein the cooking time, cooking temperature, cooking humidity, and combination mode are input to the controller through an input unit (S100). Wow; A convection generating step (S200) of rotating the convection fan through the convection fan driving unit by an output signal of the control unit in which the cooking setting is input; A hot air generation, supply and circulation step in which the heat generated by driving the first heater or the first burner through the heating drive unit while the convection fan is rotated is supplied and circulated to the cooking chamber with hot air (S300); A steam generation, supply and circulation step of supplying and circulating steam generated by the second heater or the second burner being driven through the steam driving unit while the hot air is supplied and circulated to the cooking chamber (S400); When steam is supplied and circulated to the cooking chamber, the humidity setting time value and the humidity progress time value are compared, and when the humidity progress time value is small, the steam is continuously generated, and when the humidity progress time value is the same or large, steam Steam driving unit stop step (S500) to stop the drive unit; A steam discharge step (S600) in which a vent connected to the vent driving unit is opened and steam is discharged according to a signal from the controller in a state in which the steam driving unit is stopped; In the steam discharge step (S600), the vent is closed according to the output signal of the control unit in the state in which the steam is discharged (S600) characterized in that the completion of the cooking step (S700) to be displayed on the status display to indicate that the completion.
In addition, the convection fan of the convection fan driving unit during the convection generation step (S200) is rotated forward and reverse by the signal of the control, characterized in that the power is turned off for a predetermined time while the forward and reverse rotation is decelerated and stopped.

In addition, the convection generation step (S200), when there is no closing signal of the door opening and closing sensor of the detection unit in the state that the door is closed, so that the door opening error display is output to the status display unit and the alarm sound output unit of the output unit, the door opening and closing sensor When there is a closing signal, the convection fan is rotated through the convection fan drive unit according to the output signal of the controller.

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In addition, in the hot air generation, supply and circulation step (S300), when the present temperature value detected by the cooking temperature sensor is applied to the controller and the controller compares the set temperature value with the present temperature value, the set temperature value is high, The first heater or the first burner is driven through the heat generator, and the first heater or the first burner is characterized in that heat is generated which varies according to the current temperature value.

In addition, the steam generation, supply and circulation step (S400) by comparing the set temperature value and the current temperature value, if the set temperature value is equal to the current temperature value, the heating drive unit is stopped according to the signal of the control unit, the steam drive unit It characterized in that the second heater or the second burner is driven through.

In addition, the steam generation, supply and circulation step (S400) further includes a direct water supply step (S410) is driven by the control unit by the control unit according to the level value detected by the boiler level sensor is supplied directly to the boiler. It is characterized by.

In addition, the steam generation unit during the steam generation, supply, circulation step (S400) is characterized in that it is operated by the data time signal of the controller.

In addition, the steam discharge step (S600) is a comparison between the cooking set time value and the cooking run time value minus the steam discharge time value, if the cooking run time value is small, the convection generation step (S200), hot air generation, supply and circulation The step (S300), the steam generation, supply and circulation step (S400) and the steam port eastern stop step (S500) to be repeated, if the cooking run time value is the same or large, characterized in that the vent is opened.

In the cooking completion step (S700), when the cooking progress time value is small by comparing the cooking set time value and the cooking progress time value while the vent is opened, the vent open state is continuously maintained, and the cooking progress time value In the case of this large runner, it is characterized in that the display shows that the vent is closed and completed.

The present invention does not detect the temperature and wind pressure difference in the cooking chamber in which the temperature and pressure are always variable in the process of cooking food using the steam convection oven, the humidity according to the running time and humidity setting time according to the cooking setting time The steam is controlled according to the running time and the cooking chamber temperature so that a constant amount of steam required for cooking is supplied and circulated, thereby obtaining food having a uniform food of good quality.

In addition, since there is no need for a sensor or an injector to detect a difference in temperature and wind pressure, it is possible to further obtain an effect of reducing time and cost associated with manufacturing.

An embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram showing a steam control method for a steam convection oven according to the present invention, Figure 2 is a flow chart illustrating a steam control method for a steam convection oven according to the present invention, Figure 3 is a steam convection oven steam according to the present invention A flowchart illustrating the control method.

Prior to describing the control method of the steam convection oven according to the present invention, the steam convection oven having such a control method is detected by the sensing unit 20 and converted into an electrical signal and compared with a preset set value. Thereafter, the input unit 10 is electrically connected to an input terminal of the control unit 30 for controlling the output value according to the difference.

The controller 30 stores a cooking time, a cooking temperature, a cooking humidity, and a combination mode, which are input through the input unit 10, in a memory, and can be read, calculated, compared, and determined from the memory according to a logic order. .

The control unit 30 is provided with a counting unit for measuring the time and pulse width and generating a periodic interruption to operate and stop the convection fan 431 necessary for cooking, the first and second heaters 441 and 451, and the first and second heaters. The driving of the second burners 442 and 452 and the vent 471 can be controlled.

The detection unit 20 includes a door opening / closing sensor 21 for detecting whether the door is opened or closed, a cooking chamber temperature sensor 22 for detecting a temperature of the cooking chamber, and a boiler level sensor 23 for detecting that water in the boiler is filled. Consists of.

An output unit 40 for outputting an operating state of the steam convection oven is connected to an output terminal of the control unit 30. The output unit 40 is a convection fan driving unit for supplying and circulating air into the cooking chamber ( 43), a heat generating unit 44 for generating heat for cooking, a steam driving unit 45 for generating steam for cooking, a hydroelectric variable driving unit 46 for supplying water required for steam generation, and a cooking chamber It is configured to be connected to the vent drive unit 47 for discharging the steam to be supplied and circulated to the outside.

The convection fan 431 is connected to the output side of the convection fan driver 43, and the first heater 441 and the gas combustion, which generate heat by electricity on the output side of the heat generating driver 44, respectively. The first burner 442 to be generated is connected so that both an electric oven and a gas oven can be used.

The convection fan 431 is configured to be driven by the control unit 30 when there is a signal of the door closing, and is the first heater 441 and the first burner driven by the heat generating unit 44. 442 is configured to be operated in the weak mode according to the set temperature and the current temperature value. For example, it operates in strong mode until the current temperature in the cooking chamber is -5 ℃ lower than or equal to the set temperature, and operates in weak mode until the current temperature in the cooking chamber is -3 ℃ lower than the set temperature. If it is equal to -3 ° C, it is preferable that the heat generating unit 44 is stopped.

The steam driving unit 45 compares the set temperature value with the present temperature value detected by the cooking chamber temperature sensor 22, and when the set temperature value is large, the steam driving unit 45 may be driven by the control unit 30. Each of the second heater 451 that generates heat by electricity and the second burner 452 that generates heat by gas combustion are connected to each other so that both an electric oven and a gas oven can be used.

The steam driving unit 45 compares the humidity setting time value with the humidity progress time value while steam is supplied and circulated to the cooking chamber, and when the humidity progress time value is small, the steam is continuously generated and the humidity progress time value If it is the same or larger, the steam driving unit 45 is configured to be stopped.

The vent driving part 47 is configured to be connected to the vent 471 which is operated by electricity at the output side of the vent driving part 47. The vent driving part 47 is operated according to a signal from the controller 30 while the steam driving part 45 is stopped. The vent 471 connected to the opening is opened, and the steam in the cooking chamber is discharged to the outside.

The steam control of such a steam convection oven is as follows.

First, in the cooking setting input step (S100), the food is put into the cooking chamber, the door is closed, and the power is applied to the cooking time, the cooking temperature, the cooking humidity, and the combination mode through the input unit 10. To be entered.

Next, when cooking is started according to the signal of the control unit 30 in the convection generation step (S200) and there is no closing signal of the door opening / closing sensor 21 in the state in which the door is closed, the state display unit of the output unit 40 ( 41) and the alarm sound output unit 42 to output the door open error display, and when the closing signal of the door opening and closing sensor 21, the convection fan drive unit 43 by the output signal of the control unit 30 The convection fan 431 is rotated through the suction force and toe output is generated.

At this time, the convection fan 431 of the convection fan driving unit 43 is reversely rotated by the signal of the control unit 30 so that heat and steam are convection smoothly in both directions into the cooking chamber, and the convection fan 431 is reversely rotated. The power can be turned off and decelerated for about 20 to 40 seconds, which is a predetermined time between losing. This prevents the occurrence of excessive force in the driving part due to the shock generated in the convection fan driver 43 when the momentary reverse rotation is made to the convection fan 431, and the convection fan in the power-off state. While the 431 is rotated in the same direction, it is naturally decelerated by the brake action, which is a resistance due to friction with air in the cooking chamber or a magnetic force such as a magnetic force of the convection fan driver 43, and then stops.

Next, the heat generated by driving the first heater 441 or the first burner 442 through the heat generator 44 while the convection fan 431 is rotated in the hot air generation, supply and circulation steps (S300). It is supplied to the cooking chamber and circulated.

While the hot air is being supplied and circulated to the cooking chamber, the present temperature value detected by the cooking chamber temperature sensor 22 is applied to the controller 30, and the controller 30 compares the set temperature value with the present temperature value to set the temperature. When the value is high, the first heater 441 or the first burner 442 is driven through the heat generator 44.

In this case, the first heater 441 and the first burner 442 may be operated in the weakening mode according to the set temperature and the present temperature value. That is, it is operated in strong mode until the present temperature in the cooking chamber is -5 ℃ lower than or equal to the set temperature, and then operated in weak mode until the present temperature in the cooking chamber is -3 ℃ lower than the set temperature. And, if it is equal to -3 ℃, the heat generating unit 44 is stopped.

Next, the steam generated by the second heater 451 or the second burner 452 is driven through the steam driving unit 45 while hot air is supplied and circulated to the cooking chamber in the steam generation, supply and circulation steps (S400). It is supplied to the cooking chamber and circulated.

At this time, according to the level value detected by the boiler level sensor 23, the power receiver variable driving unit 46 is driven by the control unit 30 to be added to the boiler (direct water replenishment step (S410)). In this process, the steam driving unit 45 is operated by the data time signal of the control unit 30. That is, the steam can be continuously generated and supplied for a predetermined time or gradually supplied for several seconds.

Next, when steam is supplied and circulated toward the cooking chamber in the steam driving unit stop step (S500), the humidity setting time value and the humidity progress time value are compared, and when the humidity progress time value is small, the steam is continuously generated and the humidity is maintained. When the running time value is the same or large, the steam driving unit 45 is stopped.

Next, the vent 471 connected to the vent driving unit 47 is opened in response to a signal from the control unit 30 in the state in which the steam driving unit 45 is stopped in the steam discharging step S600, and the steam in the cooking chamber is discharged to the outside. Will be. At this time, the control unit 30 compares the cooking set time value minus the steam discharge time value and the cooking run time value when the cooking run time value is small, the convection fan step 431 to rotate the convection fan (431) , Hot air generation, supply and circulation step (S300), steam generation, supply and circulation step (S400) and the steam driving unit stop step (S500) is repeated, the cooking set time value and cooking run time minus the steam discharge time value By comparing the values, if the cooking run time value is the same or large, the vent 471 is opened and steam is continuously discharged.

Next, in the state in which steam is discharged through the steam discharge step (S600) to the cooking completion step (S700), it is displayed on the status display unit 41 that the completion is completed according to the output signal of the controller 30. At this time, the control unit 30 compares the cooking set time value and the cooking run time value while the vent 471 is open, and when the cooking run time value is large, the vent 471 is kept open and steam is kept. If the cooking progress time value is greater than or equal to the cooking set time value and the cooking progress time value, the vent 471 is closed and displayed on the display 41.

1 is a block diagram showing a steam control method for a steam convection oven according to the present invention.

Figure 2 is a flow chart illustrating a steam control method for a steam convection oven according to the present invention.

Figure 3 is a flow chart illustrating a steam control method for a steam convection oven according to the present invention.

<Brief description of symbols for the main parts of the drawings>

S100: Cooking setting input step S200: Convection generation step

S300: Hot air generation, supply and circulation stage S400: Steam generation, supply and circulation stage

S500: Steam driving unit stop step S600: Steam discharge step

S700: cooking completion step 10: input unit

30: control unit 41: status display unit

43: convection fan drive unit 44: heat generation drive unit

45: steam drive part 47: vent drive part

431: convection fan 441: first heater

442: first burner 451: second heater

452: second burner 471: vent

Claims (9)

In the steam convection oven steam control method in which food is cooked using heat and steam, A cooking setting input step (S100) in which cooking time, cooking temperature, cooking humidity, and a combination mode are input to the control unit 30 through the input unit 10; A convection generating step (S200) in which the convection fan 431 is rotated through the convection fan driver 43 according to an output signal of the control unit 30 in which the cooking setting is input; While the convection fan 431 is rotated, the heat generated by driving the first heater 441 or the first burner 442 through the heat-generating driver 44 is generated and supplied to the cooking chamber with hot air. Supply and circulation step (S300); While the hot air is supplied and circulated to the cooking chamber, steam generated, supplied, and circulated through the steam driving unit 45 is driven by the second heater 451 or the second burner 452 to the cooking chamber. A circulation step (S400); When steam is supplied and circulated to the cooking chamber, the humidity setting time value and the humidity progress time value are compared, and when the humidity progress time value is small, the steam is continuously generated, and when the humidity progress time value is the same or large, steam Steam driving unit stop step (S500) to stop the driving unit 45; A steam discharge step (S600) in which the vent 471 connected to the vent driving unit 47 is opened according to a signal from the controller 30 while the steam driving unit 45 is stopped and steam is discharged; When the steam is discharged through the steam discharge step S600, the vent 471 is closed according to the output signal of the controller 30, and the cooking completion step S700 is displayed to indicate that the completion is completed. Made up of During the convection generation step (S200), the convection fan 431 of the convection fan driver 43 is rotated forward and backward by the signal of the control unit 30, while the power is turned off for a predetermined time while the forward and reverse rotation is decelerated and stopped. Steam control method for the steam convection oven characterized in that. The method of claim 1, In the convection generation step (S200), when there is no closing signal of the door opening / closing sensor 21 of the sensing unit 20 in the state in which the door is closed, the status display unit 41 and the alarm sound output unit 42 of the output unit 40 are present. When the door open error display is output, and there is a closing signal of the door opening / closing sensor 21, the convection fan 431 is rotated through the convection fan driver 43 according to the output signal of the controller 30. Steam control method for a steam convection oven, characterized in that. delete The method of claim 1, In the hot air generation, supply and circulation step (S300), the present temperature value detected by the cooking temperature sensor 22 is applied to the control unit 30, and the control unit 30 compares the set temperature value with the present temperature value. When the set temperature value is high, the first heater 441 or the first burner 442 is driven through the heat generator 44, and the first heater 441 or the first burner 442 is the present temperature value. Steam control method for a steam convection oven, characterized in that the heat generated is variable according to. The method of claim 1, In the steam generation, supply and circulation step (S400), when the set temperature value is equal to the current temperature value by comparing the set temperature value with the present temperature value, the heating driving unit 44 is stopped according to the signal of the controller 30. And a second heater (451) or a second burner (452) is driven through the steam driving unit (45). 6. The method according to claim 1 or 5, The steam generation, supply and circulation step (S400) is a direct water replenishment step in which the manual changeover driving unit 46 is driven by the controller 30 according to the level value detected by the boiler level sensor 23, and the direct water is replenished in the boiler. Steam control method for the steam convection oven, characterized in that the (S410) is further included. 6. The method according to claim 1 or 5, Steam generation unit during the steam generation, supply, circulation step (S400) 45 is a steam control method for a steam convection oven, characterized in that the operation is operated by the data time signal of the control unit (30). The method of claim 1, The steam discharge step (S600) is a comparison of the cooking set time value and the cooking run time value minus the steam discharge time value, when the cooking run time value is small, the convection generation step (S200), hot air generation, supply and circulation step ( S300), the steam generation, supply and circulation step (S400) and the steam driving unit stop step (S500) is repeated, if the cooking run time value is the same or large, the steam convection characterized in that the vent 471 is opened Steam control method for oven. The method of claim 1, In the cooking completion step (S700), when the cooking progress time value is small by comparing the cooking set time value and the cooking progress time value while the vent 471 is opened, the vent 471 is kept open. , If the cooking run time value is greater than or equal to, the steam control method for a steam convection oven, characterized in that the display (41) that the vent 471 is closed and completed.

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