KR20110045962A - Control method of cooking appliance - Google Patents

Abstract

PURPOSE: A control method of cooking appliance is provided to prevent the excessive heat of a heater by preventing the heater surface from heating higher than a fixed temperature. CONSTITUTION: A control method of cooking appliance comprises next steps. A heater, emitting heat and light to the internal space of a cooking chamber, is operated. The heater is independently controlled after a heater operation setting time. The heater maintains the preset surface temperature of a heater.

Description

Control method of cooking appliance {Control method of cooking appliance}

The present invention relates to a control method of a cooking appliance installed in a kitchen space, and more particularly, to a control method of a cooking appliance in which a heater as a heat source is independently controlled.

A cooking appliance is one of household appliances for cooking food located in a kitchen space. The cooking appliance is classified into a microwave oven, an oven, a hop according to a function, and a built-in type and a free type. It can be divided into free-stand type and wall-mounted type.

The microwave oven is a kitchen appliance for cooking food by heating the food by the high frequency by emitting a high frequency in the interior space where the food is located, the oven is an internal space where the food is located by the heat emitted from the heater or burner, etc. It is a kitchen appliance that cooks food by heating.

The hop is placed in a container or food containing food on the upper side, as a kitchen appliance for cooking food by heating the container or the portion in which the food is placed, it is possible to cook a variety of food of small size and the recent One.

These hops can be combined with an oven to cook food by heating the container with the food on the upper side or the place where the food is placed, and by heating the food or the container with food on the lower side to cook the food. Various dishes and many dishes are possible at the same time.

In addition, the built-in type is installed to be stored in the interior of the kitchen furniture located in the kitchen space, the free stand type is installed in the form of the user's desired space, the wall-mount type is installed on the wall of the kitchen space in the kitchen space It is installed in the form of performing the function of the hood to discharge the polluted air to the outside space at the same time.

On the other hand, the cooking apparatus is provided with a plurality of heat sources for heating the cooking space by dissipating heat to the cooking space, the cooking space is heated by the heat emitted from the heat source, the food placed in the cooking space is cooked while being heated.

The present invention proposes a control method of a cooking appliance for maintaining the surface temperature of the heater in a set temperature range by controlling the heater independently.

A control method of a cooking apparatus according to the present invention includes a heating mode in which a heater for radiating heat and / or light into an inner space of a cooking chamber providing a cooking space for food; A maintenance mode in which the heater is independently controlled after a set time elapses after the operation of the heater to maintain a surface temperature of the heater; And a completion mode for stopping cooking when it is determined that cooking of the food is completed. It is configured to include.

In another aspect, the control method of the cooking appliance according to the present invention, the heating to heat the interior space of the cooking chamber by emitting a heat and / or light to the cooking chamber for providing a space for food is heated to heat the interior space of the cooking chamber step; Maintaining the surface temperature of the heater while maintaining the set temperature range while the heater is independently controlled when the internal temperature of the cooking chamber reaches the set temperature after the heater is operated; And a completion step of stopping cooking when it is determined that cooking of the food is completed. It is configured to include.

According to the present invention, the independent control of the heater can be configured to prevent the surface temperature of the heater from being heated above a predetermined temperature, so that the effect of preventing overheating of the heater can be expected.

In addition, it is possible to expect the effect of extending the service life of the heater by preventing the overheating of the heater, thereby it is possible to expect the effect of improving the reliability of the product, and to reduce the cost of using the product and services The cost reduction effect can be expected.

Hereinafter, with reference to the accompanying drawings, a cooking apparatus according to the present invention configured as described above will be described in detail with reference to the embodiment.

However, the spirit of the present invention may not be limited to the embodiments by the embodiments described below, and those skilled in the art who understand the spirit of the present invention may include other embodiments within the scope of the same idea. It can be easily proposed through addition, modification, deletion, etc., but this will also be included in the spirit of the present invention.

Further, hereinafter, the cooking apparatus according to the present invention is described through the embodiment for convenience of description, but is not limited thereto, and heat and light are simultaneously emitted such as carbon heater or halogen heater to heat the cooking chamber in which food is placed. It will be revealed in advance that it is applicable to the cooking apparatus.

In addition, the terminology used in the present specification or claims is a concept selected for convenience of description, and when grasping the technical contents of the present invention, it should be appropriately interpreted as a meaning corresponding to the technical idea of the present invention.

In the cooking apparatus to be examined in an embodiment of the present invention, a plurality of various heat sources may be used, and an electric oven, in which a broil heater is provided with a carbon heater, is described as an example.

1 is a perspective view showing the appearance of a cooking appliance according to an embodiment of the present invention, Figure 2 is a side cross-sectional view showing the internal configuration of the cooking appliance according to an embodiment of the present invention, Figure 3 A flowchart illustrating an operation flow of the cooking appliance according to an embodiment of the present invention is shown.

Figure 4 is a side cross-sectional view showing the internal configuration of the cooking appliance according to another embodiment of the present invention, Figure 5 is a flow chart showing the operation flow of the cooking appliance according to the embodiment of Figure 4, Figure 6 The graph showing the temperature change of the heater by the control method of the cooking appliance according to an embodiment of the present invention is shown.

Looking at the oven according to an embodiment of the present invention with reference to the accompanying drawings, the outer surface of the oven is formed by a substantially rectangular parallelepiped-shaped main body 100 is opened, the main body 100 is a certain degree of strength It is made of a steel plate material having a.

The inner space of the main body 100 is provided with a cooking chamber 120 for providing a space in which food is cooked. The cooking chamber 120 is formed in a rectangular parallelepiped shape in which a front surface is opened while forming an internal space of a predetermined degree, thereby providing a space in which food is cooked by the internal space. That is, after the food is placed in the interior space of the cooking chamber 120, the food is cooked by heating the interior space of the cooking chamber 120, which is a space where the food is placed.

An open front surface of the main body 100 is equipped with a door 110 for simultaneously opening and closing the open front surface of the cooking chamber 120 while selectively opening and closing the front surface at least partially open.

The door 110 is formed in the shape of a square plate having a predetermined thickness, is fastened by a hinge to rotate in the vertical or horizontal direction on the front surface of the main body 100 while the user rotates the door 110, the main body 100 And open and close the open front surface of the cooking chamber 120.

Therefore, the user rotates the door 110 to simultaneously open the front surfaces of the main body 100 and the cooking chamber 120, and then places the food in the interior space of the cooking chamber 120, and then rotates the door 110 again. By closing the inner space of the cooking chamber 120 to heat the inner space of the cooking chamber 120 it is possible to cook food.

The front surface of the door 110 is provided with a handle 112 that can be gripped when the user wants to rotate the door 110, while the user grips the handle 112 and then rotates the door 110 The interior space of the cooking chamber 120 is selectively sealed.

Since the handle 112 performs a function of gripping when the user wants to rotate the door 110, the handle 112 may be formed to protrude forward, and at least a part of the front surface of the door 110 is recessed to the rear. It will be possible to be formed so that the user can hold.

 The central portion of the door 110 is provided with a see-through window 114 is formed to be transparent so that the user can check the internal space of the cooking chamber 120 from the outside. The viewing window 114 allows the user to check the cooking state of the food placed in the interior space of the cooking chamber 120 or the environment of the interior space of the cooking chamber 120 without opening the main body 100 or the cooking chamber 120. Is provided for.

In the inner space of the main body 100 formed on the upper side of the cooking chamber 120 is provided with an electric battle chamber 130, the electric battle chamber 130 is a plurality for controlling a plurality of parts that operate to cook food In order to cool the electrical components and the main body 100 of the cooling fan for flowing the air is installed.

In front of the electric battle room 130, when the user wants to cook food, the control panel 140 for directly operating the main body 100 is located. The control panel 140 is provided with a plurality of knobs and buttons for operating a plurality of parts directly installed in the main body 100 for the user to cook food, the operation state and operation state of the plurality of parts, food The display is further provided for displaying the cooking state of the user so as to be recognized from the outside.

The control panel 140 is formed in the shape of a square plate having a predetermined thickness, and a connection circuit for electrically connecting circuit components mounted while a plurality of circuit components are mounted in the internal space or the rear of the control panel 140. PCC is a printed circuit board is printed.

The PCB is equipped with a microcomputer (MICOM) in which various information for cooking of food is embedded while controlling a plurality of electrical components, and a plurality of electronic components are operated and controlled by various information embedded in the microcomputer. Will cook.

In addition, the display is a part that transmits information such as temperature of the cooking chamber 120 for cooking food, type of cooking, cooking time, etc. to the user, and is provided as an LED to provide letters or numbers. It is also possible to be configured to deliver information, it is also possible to be provided to the LCD (LCD) to be configured to deliver information to the screen, video or video.

Looking at the internal configuration of the oven according to an embodiment of the present invention with reference to Figure 2, the cooking chamber 120 for providing a space for cooking food is located in the center of the inner space of the main body 100, such The electrical equipment chamber 130 is positioned above the cooking chamber 120.

An upper heater 150 for heating the inner space of the cooking chamber 120 is located above the space between the cooking chamber 120 and the electric chamber 130, that is, the cooking chamber 120. The lower side of the lower heater 160 for heating the inner space of the cooking chamber 120 from the lower side is located.

The upper heater 150 and the lower heater 160 may be located in the inner space of the cooking chamber 120, but the cooking space of the food and the cooling of each heater and by the foreign substances generated while cooking food It may be desirable to be located in the outer space of the cooking chamber 120 for reasons such as pollution prevention.

In addition, a convection heating device 170 is installed at a rear side of the inner space of the cooking chamber 120 while forcibly convection air in the inner space of the cooking chamber 120 to heat the inner space of the cooking chamber 120. The convection heating device 170 is a convection fan cover 172 for forcibly flowing the air in the interior of the cooking chamber 120 by the rotational movement, and a convection fan cover 172 for providing a space in which the convection fan 171 is located, Convection fan motor 173 for generating a driving force for the rotational movement of the convection fan 171, and a convection heater 174 for heating the air flowing by the rotational movement of the convection fan 171 is configured.

The convection fan motor 173 is located at the rear side of the cooking chamber 120, and a rotating shaft coupled to the convection fan motor 173 axially penetrates the rear surface of the cooking chamber 120, thereby being positioned in the interior of the cooking chamber 120. It is coupled with the convection fan 171.

As such, as the convection fan 171 and the convection fan motor 173 are coupled, the convection fan 171 is rotated by the driving force provided by the convection fan motor 173, and thus the cooking chamber ( 120) Forced air in the inner space is forced to flow.

The convection fan cover 172 has a disc shape having a predetermined thickness, and the center portion except the edge portion is formed to be recessed forward, and the rear portion of the edge portion is fastened to the rear side of the inner space of the cooking chamber 120, and the depression is made. The convection fan 171 is positioned in a predetermined degree of space provided at the center portion to be formed.

At this time, the diameter of the space provided in the center portion of the convection fan cover 172 is formed larger than the diameter formed while the convection fan 171 rotates, the inner space of the convection fan cover 172 and the convection fan 171 In order to provide a space in which the convection heater 174 is located.

The convection heater 174 is positioned along the edge portion while being spaced apart from the edge portion of the convection fan 171 at a predetermined interval. Due to the convection heater 174, the air flowing by the rotational movement of the convection fan 171 is heated while passing through the convection heater 174, and the heated air flows into the interior space of the cooking chamber 120 while the cooking chamber ( Convection heating of the internal space of 120).

As such, when the convection fan 171 rotates by the driving force provided by the convection fan motor 173, the convection fan cover is provided through a plurality of suction holes formed in the front of the central portion of the convection fan cover 172. The air flowing into the internal space of the 172 and the air flowing into the internal space of the convection fan cover 172 is formed inside the cooking chamber 120 through an exhaust hole formed at a side surface of the central portion of the convex fan cover 172. To flow into space.

Of course, the exhaust hole is not formed in the central side of the recessed central portion of the convection fan cover 172, the convection fan cover 172 is fastened in a state spaced apart from the rear of the inner space of the cooking chamber 120, the convection fan cover 172 ) And heated air passing through the convection heater 174 between the rear of the inner space of the cooking chamber 120 may flow into the inner space of the cooking chamber 120.

Therefore, air flows through the front surface of the convection fan cover 172 by the rotational movement of the convection fan 171, and the air flows into the interior space of the convection fan cover 172, and the flowed air is the convection fan 171. Is heated while passing through the convection heater 174, the heated air passes between the exhaust hole or the convection fan cover 172 and the rear of the inner space of the cooking chamber 120 cooking chamber 120 While flowing into the internal space of the cooking chamber 120 will heat the internal space.

In addition, the air emitted from the upper heater 150 and the lower heater 160 is convection in the inner space of the cooking chamber 120 while the air in the inner space of the cooking chamber 120 flows by the convection heating device 170. Will have the effect of heating the food evenly.

On the other hand, in the embodiment of the present invention will be described with an example that the upper heater 150 is provided with a carbon heater. The carbon heater is a heater in which resistance stability is improved during heating of the heating element by enclosing the heating element in a quartz glass member and graphitizing the carbon wire made of carbon fiber having a specific crystal structure as a heating element.

The heating element formed of the carbon wire is excellent in temperature characteristics, excellent in high temperature durability, and when manufactured by twisting a plurality of fiber bundles, it is advantageous in that it is easy to process into various structures and forms while being more flexible. When the carbon heater is encapsulated together with a non-oxidizing gas in a clean support member such as a high purity quartz glass member, the carbon heater does not generate carbon particles or glass particles, and thus, an improved effect can be expected.

Of course, it will also be possible to use a sheath heater or a halogen heater in the upper heater 150. However, the upper heater 150 has a temperature range suitable for use according to its configuration and characteristics of the heating element, and is suitable for use in a temperature range of about 800 ° C. for a sheath heater, and about 2,000 ° C. for a halogen heater. Experiments show that it is suitable for the temperature range of.

In the case of the carbon heater illustrated in the present invention, it can be seen that the carbon heater is suitably used in a temperature range of about 1,200 ° C. If the use temperature of the upper heaters 150 exceeds an appropriate range, the inside of the heater In the heat generating element that emits heat is damaged, or power consumption is increased.

In addition, the upper heater 150 has the largest energy of the wavelength included in the effective wavelength band when the temperature of the heater surface is approximately 1000 ~ 1400 ℃ at about 1.4 ~ 5.0㎛ the effective wavelength band of the main cooking object. The experiment shows that the carbon heater has the most suitable surface temperature among the types of heaters. The carbon heater has the most radiation in the effective wavelength band, and thus it can be seen that the heater is the most suitable heater for cooking equipment.

Furthermore, the carbon heater has a higher temperature rise than the other heaters when heated and cooked for the main cooking target, and since the energy emitted in the effective wavelength band has a lot of energy that food can absorb, the cooking time of the food is shortened. It has the advantage that can save the entire cooking time, and the heating efficiency of heating food is improved to be expected to have the advantage of improving the consumption efficiency of the energy used for cooking.

Therefore, a sheath heater is used for the lower heater 160 and the convection heater 174. Compared with carbon heaters, the sheath heater has a low calorie value and takes a long time to heat.

Since the upper heater 150 has a large energy emitted from the heater, that is, radiant energy is large, the upper heater 150 is preferably located in a space communicating with the inner space of the cooking chamber 120, in which the food is placed. For this purpose, the upper heater 150 is A portion of the upper surface of the cooking chamber 120 positioned is cut off to have a predetermined area, and a heater fixing part for fixing and mounting the upper heater 150 is positioned at the cut off portion.

The heater fixing part is located along the cut edge of the cooking chamber 120 to support the upper heater 150 from the lower side, and the upper heater to the other space while protecting the upper heater 150 on the upper side of the heater fixing part ( The heater cover 152 is located so that the heat of the 150 is not dissipated.

The heater cover 152 has a predetermined thickness and forms a square plate shape as a whole, and a central portion is formed to be recessed upward to form a space in which the heater can be located, and a heater cover 152 formed to be recessed upward. Below the center of the recessed portion of the inner space is further provided with a reflecting plate for reflecting heat emitted from the upper heater 150 to the inner space of the cooking chamber 120.

In addition, a lower portion of the upper heater 150 is provided with a porous portion in which a plurality of holes are formed, and provides a passage through which heat radiated from the upper heater 150 moves to an internal space of the cooking chamber 120. The upper heater 150 is protected from impurities or foreign substances generated while food is cooked in the inner space of the 120.

That is, since the upper heater 150 emits large radiant energy to heat the internal space of the cooking chamber 120, which is a space where food is placed, the upper heater 150 is preferably located in a space communicating with the internal space of the cooking chamber 120. For this purpose, a porous portion is provided below the upper heater 150.

Of course, it is also possible that the cooking chamber 120 is formed in a state in which the lower portion of the upper heater 150 is not provided without the porous portion, but the food is cooked in the inner space of the cooking chamber 120. It will be preferable that the porous part is provided to protect the upper heater 150 from impurities or foreign substances.

The porous portion has a plurality of circular shaped holes having a predetermined diameter, and the circular holes provide passages through which radiant energy emitted from the upper heater 150 moves to the inner space of the cooking chamber 120. Done. The hole of the porous part may be formed in any form as long as it can perform a function of providing a passage through which radiant energy emitted from the upper heater 150 passes.

In other words, it may be possible to form a polygonal hole instead of a circular hole, but the circular hole shape may be preferable since the circular hole shape having the largest cross-sectional area passes the radiation energy best.

In addition, the upper heater 150 may be located in the inner space of the cooking chamber 120. In this case, the space in which the upper heater 150 is positioned is protected by the heater cover to protect the upper heater 150. The upper heater 150 and the electrode are connected to each other and are positioned in the outer space of the cooking chamber 120 and are cooled to be cooled by cold air flowing into the inner space of the main body 100 to prevent damage. .

Hereinafter, a control method of a cooking appliance employing one embodiment of the present invention will be described with reference to FIGS. 3, 5, and 6.

When the user places food in the interior space of the cooking chamber 120 and rotates the door 110 to shield the interior space of the cooking chamber 120, the heating mode 220 in which the upper heater 150 operates is Proceed. In the heating mode 220, both the upper heater 150, the lower heater 160, and the convection heater 174 operate at the maximum amount of heat to heat the internal space of the cooking chamber 120.

As described above, in the heating mode 220, a plurality of heaters mounted to heat the inner space of the cooking chamber 120 operate at the maximum heat generation amount, and the temperature of the inner space of the cooking chamber 120 in which food is placed is changed in a short time. While forming at a high temperature can be expected to reduce the overall cooking time.

When the heater is operated in the heating mode 220, the temperature of the interior space of the cooking chamber 120 rises with a predetermined slope, and has the same change amount or the corresponding change amount as the temperature change amount of the interior space of the cooking chamber 120. As a result, the surface temperature of the heater is increased.

In other words, when the heater is operated in the heating mode 220 to heat the interior space of the cooking chamber 120, when the temperature of the interior space of the cooking chamber 120 is increased through an experiment, the internal space of the cooking chamber 120 is increased. It is possible to estimate the surface temperature of the upper heater 150 corresponding to the sensed temperature.

When the set time elapses after the heating mode 220 proceeds, at least the upper heater 150 is independently maintained in the maintenance mode 240. In the maintenance mode 240, even if the user operates the operation of the upper heater 150 by operating a plurality of knobs and buttons provided in the control panel 140, the upper heater 150 is set to not operate. It is independently controlled by a microcomputer located in the battlefield room 130.

In the maintenance mode 240, at least the upper heater 150 is independently controlled by the microcomputer, so that the surface temperature of the upper heater 150 is controlled on / off to maintain a set temperature range.

Maintaining the surface temperature of the upper heater 150 in the set temperature range is on the surface of the upper heater 150 is provided with a carbon heater, such as foreign matter generated while the food placed in the inner space of the cooking chamber 120 is heated. This is to prevent damage to the upper heater 150 by foreign matter while being adhered.

Of course, even if a halogen heater is used instead of the carbon heater, the maintenance mode 240 is performed to prevent damage to the upper heater 300 to increase the use time of the upper heater 150. Have.

Therefore, as the maintenance mode 240 proceeds, the surface temperature of the upper heater 150 maintains a set temperature range, thereby preventing damage to the upper heater 150 and thus extending the life of the heater. .

When the temperature change of the interior space of the cooking chamber 120 and the surface temperature change of the upper heater 150 are increased with the same or corresponding change amount, the temperature of the interior space of the cooking chamber 120 is detected. As the surface temperature of 150 can be predicted, the on / off operation of the upper heater 150 can be performed according to the temperature of the inner space of the cooking chamber 120.

It is most preferable that the surface temperature of the upper heater 150 is maintained at a temperature range of approximately 600 ° C. to 650 ° C. in the maintenance mode 240. However, it is not necessary to precisely maintain the temperature range of 600 ℃ to 650 ℃, the description of the present invention suggests the most preferred embodiment, and may vary depending on the cooking environment of the food or the surface material of the upper heater 150. There will be.

In addition, a start time point at which the maintenance mode 240 proceeds is set to a time after a preheating operation operated while the heating mode 220 proceeds. When the preheating operation is performed, the heater operates at the maximum amount of heat to heat the internal space of the cooking chamber 120, thereby saving cooking time. If the preservation mode 240 is performed before or during the preheating operation, In order to prevent the cooking chamber 120 from being heated in a short time, the maintenance mode 240 sets a time to start at a time after the preheating operation is completed.

In addition, the time at which the maintenance mode 240 starts is set differently depending on the type of food and the amount of food and the cooking method of the food placed in the inner space of the cooking chamber 120. That is, when cooking foods such as whole chickens having a relatively large volume of food placed in the inner space of the cooking chamber 120, a longer time for starting the maintenance mode 240 is set, and foods having a relatively small volume are cooked. In this case, the time at which the maintenance mode 240 starts is set to be shorter.

By the maintenance mode 240, the heater is set to a different time after the preheating operation is finished by the type and amount of food to be cooked and the cooking method, and when the set time elapses, the heater is independently controlled and turned on / off In operation, it operates to maintain the surface temperature in a certain temperature range.

When the set cooking time elapses during the operation of the maintenance mode 240 or when a time is detected a predetermined time from the set cooking completion time, all the heaters are terminated so as not to further heat the internal space of the cooking chamber 120. Then, the completion mode 260 for notifying the user of the completion time of cooking after a predetermined time elapses from the time when the operation of the heater is in progress.

As the completion mode 260 proceeds, the user perceives the end of the food cooking, rotates the door 110 to open the front surface of the cooking chamber 120, and then is located in the interior space of the cooking chamber 120. Or take the container containing the food to the outside space to eat the cooked food.

At this time, the operation of the heater is stopped before the completion mode 260 does not heat the inner space of the cooking chamber 120 is that the user rotates the door 110 to move the food to the outer space cooking chamber 120 This is to prevent burns by hot air in the inner space.

Therefore, the microcomputer stops the operation of the heater before the completion mode 260 to control not to heat the internal space of the cooking chamber 120, or stops the operation of the heater in the completion mode 260, By controlling the door 110 so that the door 110 does not open for a certain time, it is possible to expect the effect of preventing the user's human damage so that the internal space of the cooking chamber 120 is not opened.

Hereinafter, another embodiment of a cooking apparatus according to the present invention will be described with reference to FIGS. 4 and 5.

In this other embodiment, only the upper heater 150 will be described with an example that is provided with a carbon heater or a halogen heater. Of course, the lower heater 160 or the convection heater 174 may also be used as a carbon heater or a halogen heater. In this case, all heaters are controlled like the upper heater 150.

In another embodiment, a heating step 320 for heating the internal space of the cooking chamber 120 by dissipating heat and / or light to the cooking chamber 120 providing a space where food is cooked, and the heating step 320 When the temperature of the inner space of the cooking chamber 120 reaches the set temperature by the control unit, the upper heater 150 is independently controlled to maintain the surface temperature of the heater in the set temperature range. .

In the maintaining step 340 to detect the temperature of the interior space of the cooking chamber 120 to control the upper heater 150 independently, the temperature change of the interior space of the cooking chamber 120 is the surface temperature of the upper heater 150 This is possible by having the amount of change equal to or corresponding to the change.

That is, when the upper heater 150 is operated, the inner space of the cooking chamber 120 is heated, and the temperature of the inner space of the cooking chamber 120 is increased so that the surface temperature of the upper heater 150 is increased at the same time. do. In this case, when the temperature of the inner space of the cooking chamber 120 is sensed by experiment, the surface temperature of the upper heater 150 may be predicted by the detected temperature of the inner space of the cooking chamber 120.

Therefore, when the temperature of the inner space of the cooking chamber 120 reaches a set temperature by estimating the surface temperature of the upper heater 150 by sensing the temperature of the inner space of the cooking chamber 120, the location is located in the electric chamber 130. The microcomputer controls the upper heater 150 independently.

When the upper heater 150 is independently controlled, even if the user inputs another input signal in the external space of the main body 100, the upper heater 150 operates to maintain the surface temperature within the set temperature range. . In other words, it operates to maintain the surface temperature within a set temperature range without reacting to a signal other than a termination signal for terminating the operation of the upper heater 150 or a signal according to the operation of the fan.

As such, when the user inputs a termination signal to end the operation of the upper heater 150, the microcomputer terminates the operation of the upper heater 150, thereby allowing the user to access the door ( When the internal space of the cooking chamber 120 is opened by rotating 110, the user's body is not harmed to improve safety.

The upper heater 150 also reacts to a signal according to the operation of the fan. The signal to which the upper heater 150 reacts is an operation signal of the convection fan 171 shown in FIG. 2, and when a separate fan is provided to cool the upper heater 150, the upper heater 150 is used. It also responds to the operation signal of the cooling fan.

As described above, the upper heater 150 reacts to a signal according to the operation of the fan because the surface of the upper heater 150 is cooled by the operation of the fan so that the surface temperature of the upper heater 150 is changed. This is because it is not necessary to control independently to maintain the set temperature.

In detail, the independent control of the upper heater 150 is to maintain the surface temperature of the upper heater 150 in a set temperature range, so when the fan is operated by a user's operation or the microcomputer, the upper heater ( Since the surface of 150 is cooled, the surface temperature is maintained at a temperature lower than or equal to the set temperature even when the upper heater 150 is not independently controlled, so that the independent control is unnecessary.

Therefore, when the fan is operated, the upper heater 150 is operated by the user's operation or the operation set in the microcomputer.

In addition, when the temperature of the inner space of the cooking chamber 120 after the heating step 320 is less than the set temperature or when the preheating time ends before the set time in the heating mode 220, the upper heater 150 Is operated by the user's operation or the operation set in the microcomputer.

As the surface temperature of the heater is maintained in the set temperature range by the maintaining step 340, the inner space of the cooking chamber 120 is continuously heated, and the food placed in the inner space of the cooking chamber 120 is cooked while being heated, and If the microcomputer determines that the cooking of the food is completed, the completion step 360 of stopping the cooking of the food proceeds.

In the completion step 360, the upper heater 150 is operated in the same manner as the completion mode 260.

According to the control method of the cooking apparatus according to the present invention configured as described above, since the surface temperature of the heater can be maintained in the range below the set temperature based on the results verified by the experiment, foreign matter adhering to the surface of the heater Heater damage caused by the heater is prevented, and the heater usage time is extended by the heater which prevents the damage.

Therefore, the control method of the cooking appliance according to the present invention will be highly applicable in the cooking appliance industry in which various kinds of heaters are used.

1 is a perspective view showing the appearance of the cooking appliance according to the present invention.

Figure 2 is a side cross-sectional view showing the internal configuration of the cooking appliance according to the present invention.

3 is a flowchart illustrating an operation flow of a cooking apparatus according to an embodiment of the present invention.

Figure 4 is a side cross-sectional view showing the internal configuration of the cooking apparatus according to another embodiment of the present invention.

5 is a flowchart illustrating an operation flow of a cooking appliance according to the embodiment of FIG. 4.

Figure 6 is a graph showing the temperature change of the heater controlled by the control method of the cooking appliance according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Main body 110. Door

120. Cooking Room 130. Battlefield

140. Control panel 150. Upper heater

160. Lower heater 170. Convection heating device

171. Convection Fan 172. Convection Fan Cover

173. Convection Fan Motors 174. Convection Heaters

220. Heating Mode 240. Maintenance Mode

260. Complete Mode 320. Heating Stage

340. Maintenance phase 360. Completion phase

Claims (15)

A heating mode in which a heater for radiating heat and / or light into an inner space of the cooking compartment providing a cooking space of the food is operated; A maintenance mode in which the heater is independently controlled and maintains the surface temperature of the heater in a set temperature range after an elapse of a predetermined time after operation of the heater; And A completion mode of stopping cooking when it is determined that cooking of the food is completed; Control method of a cooking appliance comprising a. The method of claim 1, The heater is a control method of a cooking appliance is a carbon heater or a halogen heater. The method of claim 1, And in the heating mode, the heater is controlled to radiate heat at a maximum amount of heat. The method of claim 1, And a surface temperature of the heater has a change amount equal to or corresponding to a temperature inside the cooking chamber. The method of claim 1, The control method of the cooking appliance in which the heater is controlled on / off in the maintenance mode. The method of claim 1, The set time is a control method of the cooking appliance after the preheating operation of heating the temperature of the inner space of the cooking chamber is finished. The method of claim 1, The setting time is a control method of a cooking appliance which is set differently according to the type of food and the cooking method. The heater is a control method of the cooking appliance located in the interior space or the communication space of the cooking chamber. A heating step of heating the inner space of the cooking chamber by operating a heater that radiates heat and / or light to a cooking chamber providing a space where food is cooked to heat the inner space of the cooking chamber; Maintaining the surface temperature of the heater within a set temperature range while the heater is independently controlled when the internal temperature of the cooking chamber reaches a set temperature after the heating step; And If it is determined that the cooking of the food is completed, the completion step of stopping cooking; Control method of a cooking appliance comprising a. The method of claim 9, In the heating step, the heater is a control method of a cooking appliance operating at the highest power level. The method of claim 9, The heater is a control method of a cooking appliance is a carbon heater or a halogen heater. The method according to claim 1 or 9, The heater is a control method of a cooking appliance is a broil heater for heating the food from above. The method according to claim 1 or 9, When the temperature inside the cooking chamber after the heating step is less than the set temperature or when the preheating time is terminated before the set time in the heating mode, the heater is operated by the user's operation or set operation control method . The method according to claim 1 or 9, When the convection fan for the convection heating in the holding mode or the holding step is operated, the heater is not controlled independently, the control method of the cooking appliance operated by the user's operation or set operation. The method according to claim 1 or 9, And a fan for cooling the heater, wherein the heater is not controlled independently when the fan is operated.

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