JP5043536B2 - Cooking device - Google Patents

Description

  The present invention relates to a cooker that performs so-called oven cooking by heating a cooking chamber that houses and heats an object to be cooked to a predetermined temperature with combustion heat from a burner.

  In the cooking chamber where the food to be cooked is stored and cooked, the hot air from the gas burner is circulated and heated to a predetermined temperature to perform so-called oven cooking. There is a case where cooking is started by storing an object to be cooked indoors. On the other hand, in the case where a heat source having a relatively strong thermal power such as a gas burner is used as the heat source, a part of the exhaust in the cooking chamber is reduced due to reasons such as detecting the heat-resistant temperature of the temperature detection sensor or the average temperature in the cooking chamber. A temperature detection sensor is arranged in the exhaust passage that discharges to the outside, and ON-OFF control (ignition-extinguishment control) of the gas burner is performed based on the temperature detection of the temperature detection sensor.

At the time of preheating, there is no heat load because the food to be cooked is not stored in the cooking chamber, and before the cooking chamber reaches the preheating temperature, the exhaust temperature may rise above the preheating temperature and notify the end of preheating. There are problems such as incorrect setting of cooking time due to lack of preheating temperature, and the fact that delicious cooking finish cannot be obtained. As an invention to solve this, several times by pre-heating the cooking chamber by turning on and off the temperature detection sensor Some burners are notified of the end of preheating after ON-OFF control (ignition-extinguishing control). (See Patent Document 1).
Japanese Patent No. 3495603

  Thus, when temperature control of the cooking chamber is performed by temperature detection of the temperature detection sensor provided in the exhaust passage through which the exhaust gas in the cooking chamber passes (detection of a predetermined upper limit temperature and lower limit temperature), the temperature of the cooking chamber is set. Even though the cooking temperature has not risen, the temperature detection sensor detects the predetermined upper limit temperature and the gas burner is turned off. Therefore, in the above prior art, the burner is turned on and off several times (ignition / extinguishing control). Therefore, the gas supply solenoid valve is ON / OFF controlled accordingly. Since the durability decreases if the number of ON / OFF control times of the solenoid valve increases, it is preferable to reduce the number of ON / OFF control times.

  In the present invention, in view of such a point, instead of the above-described method, as an initial control of a cooking process in which an object to be cooked is stored in a cooking chamber and heated to a predetermined cooking set temperature, the cooking set temperature is used. By heating up to a higher temperature and allowing the cooking chamber temperature to quickly reach the predetermined cooking set temperature, a delicious cooking finish is obtained with the set cooking time, and the burner is turned on and off. It is an object of the present invention to provide a cooking device capable of reducing the failure rate of a solenoid valve by reducing the number of times the solenoid valve to be controlled is opened and closed, and further saving gas consumption.

The cooker according to the first aspect of the present invention supplies the combustion hot air of the burner to the cooking chamber in which the object to be cooked is stored and heated, and detects the exhaust temperature from the cooking chamber by a temperature detection sensor. controls, the in which heating control the cooking chamber to a preset cooking temperature setting, controlling the initial control of the cooking step of heating control to the cooking set temperature by accommodating the article to be cooked in the cooking chamber wherein while executing, the control unit, said cooking setting temperature elevated control temperature plus a high heating temperature to the temperature detection sensor is detected by a combustion hot air from the combustion of the burner and the operation of the fan by as well as heating control the cooking chamber, wherein when the temperature initially the temperature detection sensor has detected the cooking process is than higher predetermined temperature than the ambient temperature, the predetermined temperature Wherein the temperature in excess of the control in a state as to lower the Atsushi Nobori control temperature high.

The cooker according to the second aspect of the present invention supplies the combustion hot air of the burner to the cooking chamber in which the object to be cooked is stored and heated, and detects the exhaust temperature from the cooking chamber by a temperature detection sensor. controls, the in which heating control the cooking chamber to a preset cooking temperature setting, controlling the initial control of the cooking step of heating control to the cooking set temperature by accommodating the article to be cooked in the cooking chamber wherein while executing, the control unit, said cooking setting temperature elevated control temperature plus a high heating temperature to the temperature detection sensor is detected by a combustion hot air from the combustion of the burner and the operation of the fan by a control for heating the cooking chamber, the fan with when the temperature detection sensor has detected the high heating temperature controls the burner in the combustion stop or low combustion state The control is performed to stop or rotate at a low speed, and thereafter, the cooking set temperature is set by a predetermined upper limit temperature and a predetermined lower limit temperature detected by the temperature detection sensor, and the temperature detection sensor detects the predetermined upper limit temperature. Until the predetermined lower limit temperature is detected, the burner is stopped or in a low combustion state, and the fan is stopped or in a low-speed rotation state, and the temperature detection sensor detects the initial stage of the cooking process. When the measured temperature is equal to or higher than a predetermined temperature higher than the ambient temperature, control is performed such that the temperature rise control temperature is lowered as the temperature exceeding the predetermined temperature increases .

A cooker according to a third aspect of the present invention supplies the combustion hot air of a burner by a fan into a cooking chamber that houses and heats an object to be cooked, and detects the exhaust gas temperature from the cooking chamber by a temperature detection sensor. And controlling the heating in the cooking chamber to a preset cooking set temperature, the initial control of the cooking step of storing the cooking object in the cooking chamber and controlling the heating to the cooking set temperature And the control unit performs the operation of the fan and the combustion hot air due to combustion of the burner until the temperature detection sensor detects a high heating temperature obtained by adding a heating control temperature to the cooking set temperature. While controlling the heating of the cooking chamber, and when the temperature rise or temperature rise gradient based on the detection of the temperature detection sensor at the initial stage of the cooking process is larger than a predetermined value, There (small) and controls in the Atsushi Nobori control temperature.

The cooker according to a fourth aspect of the present invention supplies the combustion hot air of the burner to the cooking chamber in which the object to be cooked is stored and heated, and detects the exhaust temperature from the cooking chamber by a temperature detection sensor. And controlling the heating in the cooking chamber to a preset cooking set temperature, the initial control of the cooking step of storing the cooking object in the cooking chamber and controlling the heating to the cooking set temperature And the control unit performs the operation of the fan and the combustion hot air due to combustion of the burner until the temperature detection sensor detects a high heating temperature obtained by adding a heating control temperature to the cooking set temperature. Control of heating the cooking chamber, and when the temperature detection sensor detects the high heating temperature, the burner is controlled to stop combustion or to a low combustion state and the fan is controlled. The control is performed to stop or rotate at a low speed, and thereafter, the cooking set temperature is set by a predetermined upper limit temperature and a predetermined lower limit temperature detected by the temperature detection sensor, and the temperature detection sensor detects the predetermined upper limit temperature. Until the predetermined lower limit temperature is detected, the burner is stopped in a combustion state or in a low combustion state and the fan is stopped or in a low speed rotation state, and the temperature detection sensor is detected at the initial stage of the cooking process. When the temperature rise or temperature rise gradient based on is larger than a predetermined value, the control is performed to make the temperature rise control temperature low (small).

In the first invention and the third invention , as the initial control of the cooking process of storing the food to be cooked in the cooking chamber and controlling the heating to a predetermined cooking set temperature, the temperature is raised to a temperature higher than the cooking set temperature, By allowing the cooking chamber temperature to quickly reach the predetermined cooking set temperature, a delicious cooking finish can be obtained with the set cooking time, and the number of times of opening and closing of the solenoid valve for controlling the burner ON / OFF can be reduced. Thus, it is possible to provide a cooker capable of reducing the gas consumption and reducing the failure rate of the solenoid valve.

In the second invention and the fourth invention , as the initial control of the cooking process of storing the food to be cooked in the cooking chamber and controlling the heating to a predetermined cooking set temperature, the temperature is raised to a temperature higher than the cooking set temperature, By allowing the cooking chamber temperature to quickly reach the predetermined cooking set temperature, a delicious cooking finish can be obtained with the set cooking time, and the number of times of opening and closing of the solenoid valve for controlling the burner ON / OFF can be reduced. Thus, a cooker that can reduce the failure rate of the solenoid valve can be provided. Then, after heating and heating, the cooking set temperature is controlled by a predetermined upper limit temperature and a predetermined lower limit temperature detected by the temperature detection sensor (so-called thermo operation), and the temperature detection sensor detects the predetermined upper limit temperature. Until the predetermined lower limit temperature is detected, the burner is controlled to be in a combustion stopped or low combustion state and the fan is controlled to be stopped or in a low speed rotation state, so that a so-called energy saving effect in a thermo operation can be achieved.

Moreover, in the 1st invention and the 2nd invention, the temperature increase control temperature changes with the initial temperature of a cooking process, and the energy-saving effect is aimed at. That is, when the temperature detected by the temperature detection sensor at the initial stage of the cooking process is high, the cooking chamber temperature rises faster if heated in that state, so that the set cooking temperature can be reached quickly. In this case, an energy saving effect is achieved as control at a low temperature rise control temperature. Further, when the temperature detected by the temperature detection sensor is low, it is possible to reach the set cooking temperature quickly by controlling at a high temperature rise control temperature, and a delicious cooking finish can be obtained with the set cooking time. At the same time, it is possible to provide a cooker that can reduce the failure rate of the solenoid valve by reducing the number of times of opening and closing the solenoid valve that controls the burner ON-OFF.

Moreover, in the 3rd invention and the 4th invention, the temperature rise or temperature rise gradient of a cooking chamber changes with the kind of to-be-cooked object accommodated in the cooking chamber, ie, the magnitude | size of a heat load. That is, compared to the case of light heat load such as cream puffs and cookies, the temperature increase or gradient of temperature increase in the cooking chamber is smaller in the case of heavy heat load such as sponge cake. Since the time that can reach the temperature becomes longer, in this case, by controlling at a high temperature rise control temperature, it is possible to reach the set cooking temperature quickly, the gas consumption is suppressed, and the burner is turned on. The cooker which can reduce the failure rate of the solenoid valve by reducing the number of times of opening and closing the solenoid valve to be turned off can be provided, and an effect in addition to the effects of the first to third inventions can be expected. Further, when the initial temperature rise control of the present invention is not performed, the cream of the cream or the like has a problem that the baked color becomes too dark, but this can be solved by the determination of the heat load of the present invention.

  The cooker of the present invention supplies combustion hot air from a burner to a cooking chamber that houses and heats an object to be cooked by a fan, and detects the exhaust temperature from the cooking chamber by a temperature detection sensor. As a control for controlling the heating and heating the cooking chamber to a preset cooking set temperature, the control unit as an initial control of the cooking process of storing the cooking object in the cooking chamber and controlling the heating to the cooking set temperature The cooking chamber is heated and controlled by the operation of the fan and the combustion hot air from the burner combustion until the temperature detection sensor detects a high heating temperature obtained by adding a heating control temperature to the cooking set temperature. Examples of the present invention will be described below.

  An embodiment of a heating cooker according to the present invention will be described. FIG. 1 is a front perspective view of a cooking device according to the present invention, FIG. 2 is a longitudinal side view of a central portion of the cooking device according to the present invention, and FIG. 3 is a longitudinal section of a portion corresponding to an operation panel of the cooking device according to the present invention. 4 is a front view of the operation panel of the cooking device according to the present invention, FIG. 5 is a configuration diagram of a control circuit of the cooking device according to the present invention, and FIG. 6 is a control temperature characteristic of the cooking device according to the present invention. FIG. 7 is a diagram showing the relationship between the initial temperature and the temperature rise control temperature in the cooking process of the cooking device according to the present invention, and FIG. 8 is a diagram showing the relationship between the temperature rise in the cooking chamber of the cooker according to the present invention and the temperature rise control temperature. is there.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heating cooker according to the invention will be described with reference to the drawings. Reference numeral 1 denotes a floor-type heating cooker body that is used in a system kitchen or the like, for example, and a cooking chamber is configured in the heating cooker body. In addition, a cooking chamber 4 opening in the front is formed. The front opening of the cooking chamber 4 is closed by the door 2 so that it can be opened and closed. The door 2 has a pivot shaft at the lower left and right sides, and pulls the handle 5 provided at the upper end to the front side. It is pivotally supported to open and close. An operation panel 3 is disposed adjacent to the side of the door 2. The door 2 is configured such that a window made of heat-resistant glass 2B is formed inside the surrounding frame body portion 2A so that the cooking chamber 4 can be seen through from the outside.

A turntable 6 is arranged at a substantially central portion of the bottom of the cooking chamber 4 so as to rotate by a rotating shaft 8 extending upward from the electric motor device 7. A heat source unit 10 for heating the cooking chamber 4 is accommodated in the heating cooker body 1. When the cooking device according to the present invention is a gas oven, the heat source unit 10 includes a gas burner 9 and a hot air fan 11 that supplies hot air generated in the gas burner 9 to the cooking chamber 4. A space 18 is formed on the outer rear side of the cooking chamber 4, and the hot air fan 11 rotated by the electric motor 11 </ b> A is disposed in the space 18. A cooling fan 11B rotated by an electric motor 11A is provided coaxially with the hot air fan 11 so that heat on the front side of the electric motor 11A is discharged from an exhaust hole 24 described later. Below the cooking chamber 4, a combustion chamber 18 </ b> A and a gas supply chamber 18 </ b> B are provided side by side with a wall partitioned, and the rear portions of the combustion chamber 18 </ b> A and the gas supply chamber 18 </ b> B communicate with the space 18. A gas burner 9 is housed in the combustion chamber 18 </ b> A, and the gas supplied from the gas supply source through the gas pipe 12 is a gas supply unit including a first electromagnetic valve 13, a gas pressure adjusting valve 14, and a second electromagnetic valve 15. The gas is supplied from the gas pipe 16 to the pair of gas burners 9. The first electromagnetic valve 13 and the second electromagnetic valve 15 are provided for ensuring safety. An ignition electrode 17 is disposed in the vicinity of the gas burner 9. The gas supply unit 26 is housed in a gas supply chamber 18B, and a cooling fan 20 that is rotated by an electric motor 19 is disposed in the gas supply chamber 18B. A magnetron 80 is provided in the upper part of the heating cooker main body 1 so as to irradiate microwaves through the transmission holes in the ceiling wall of the cooking chamber 4, and cooking by microwave oven is possible.

Hot air (heated air) generated by combustion in the gas burner 9 is supplied to the cooking chamber 4 from a number of hot air supply holes 21 formed in the back wall of the cooking chamber 4 by the hot air fan 11 and circulates as shown by arrows. From the many discharge holes 22 formed in the upper part of the back wall of the cooking chamber 4, the exhaust passages 23 are passed through and discharged from the exhaust holes 24 formed in the top plate of the heating cooker body 1. In this way, the cooked food (object to be heated) placed on the turntable 6 is heated to a high temperature. By the operation of the cooling fan 20, the air sucked from the intake hole 25 at the lower front of the heating cooker body 1 cools the gas supply part 26 through the gas supply chamber 18 </ b> B and passes through the space 18 to the exhaust hole 24. Discharged from. Reference numeral 27 is a temperature detection sensor, and 28 is an abnormal temperature detection sensor in the cabinet. Reference numeral 29 denotes a flame detection sensor that detects ignition of the gas burner 9.

  FIG. 4 shows an embodiment of the operation panel 3, in which a display unit 31 composed of a liquid crystal panel, a fluorescent display tube or the like is arranged at the top, and an operation unit 32 is arranged below the display unit 31. Yes. The display 31 is provided with a cooking menu display unit 33, a setting display unit 34 for displaying temperature and output, a timer unit 35 for displaying time and timer, and the like. The cooking menu display unit 33 is divided into an automatic menu 33A and a manual menu 33B, and a plurality of menus are displayed as characters as the automatic menu 33A, and a plurality of menus are displayed as characters as the manual menu 33B.

  The operation unit 32 includes a lock key 36 for setting a key lock, a voice key 37 for setting a sound volume, and an operation panel 3 operated by a geared motor 49 in a tilted state in which the lower end comes to the front, and in a vertical state. The operation panel key 38 for returning to the original position is arranged side by side, the automatic cooking key 39 for selecting and setting the automatic menu 33A below these keys, the manual cooking key 40 for selecting and setting the manual menu 33B, and the finishing of cooking A finish key 41 for setting the state to be stronger or weaker is arranged side by side, and a temperature up key 42 and a temperature down key 43 are arranged side by side as temperature keys for setting the cooking temperature below these keys. As the time key for setting the time and timer time below these keys, a 10-minute unit time key 44, a 1-minute unit time key 45, and a second-unit time Place over 46 side by side, are arranged keys 48 cancel the start key 47 under these time keys.

  FIG. 5 shows an embodiment of the control circuit 50 constituting the control means. A power supply circuit 53 is connected to a commercial AC power supply 51 via a door switch 52 that opens and closes a contact according to the opening and closing of the door 2. In addition, a microcomputer 54 constituting a control unit is connected to the output side of the power supply circuit 53.

The output port of the microcomputer 54 drives a display circuit 55 for driving the display 31, a buzzer circuit 57 for operating the buzzer 56, and a geared motor 49 for tilting the operation panel 3 electrically. A motor drive circuit 59, a motor drive circuit 71 that drives the motor 11 </ b> A of the hot air fan 11 and the motor 19 of the cooling fan 20, and an electromagnetic valve that controls fuel supply to the gas burner 9 that is a heat source of the heating cooker body 1. 13 and 15, an electromagnetic valve drive circuit 60 for driving the gas burner 9, an igniter drive circuit 61 for causing high-pressure discharge with an ignition electrode 17 for igniting the gas of the gas burner 9, and an interior lamp for illuminating the cooking chamber 4 as a cooking chamber The interior lamp drive circuit 63 that blinks 62, the motor drive circuit 82 that drives the electric motor 7A of the electric motor device 7 for the turntable 6, and microwave irradiation Is connected to the drive circuit 81 of the magnetron 80, and the input port also has a key input circuit for detecting the output of the door opening / closing detection circuit 64 for detecting the opening / closing of the door 2 and the input of each operation key arranged in the operation unit 32. A flame detection circuit 67 that receives an output of 65, an output of the internal temperature detection circuit 66 that receives the temperature detection sensor 27 that detects the temperature of the cooking chamber 4, and a flame detection sensor 29 that detects the ignition of the gas burner 9. And a memory 70 for data storage are connected to the input / output port. When the door 2 is opened, the interior lamp driving circuit 63 turns on the interior lamp 62, and when the door 2 is closed, the interior lamp driving circuit 63 turns off the interior lamp 62.

  Reference numeral 68 denotes a self-holding circuit connected to the output port of the microcomputer 54, which drives a self-holding relay contact 69 connected in parallel to the door switch 52 by its output. When the door 2 is opened, the door switch When 52 is closed and the microcomputer 54 is energized by the power supply circuit 53, the relay contact 69 is closed by the output of the self-holding circuit 68, and even if the door 2 is closed due to the start of cooking or the like and the door switch 52 is opened, the relay The power supply circuit 53 is energized via the contact 69 to continue cooking.

  Further, the microcomputer 54 is used when a predetermined time elapses after cooking is completed, or when there is no input operation of each operation key arranged on the operation unit 32 even if the predetermined time elapses after the door 2 is closed. The relay contact 69 is opened to cut off the power supply to the power supply circuit 53, so that power is not consumed during so-called standby.

  Furthermore, when the door 2 is opened and energized, the microcomputer 54 operates the geared motor 49 with the output of the motor drive circuit 59 to tilt the operation panel 3 so that the lower end of the operation panel 3 protrudes to the front side. Each key arranged on the operation unit 32 is easily operated.

For example, the user once opens the door 2, puts a cooked product (object to be heated) on the turntable 6 (or on an oven cooking dish placed on the turntable 6), and closes the door 2. Thus, once the door 2 is opened, the door switch 52 is closed and power is supplied by the power supply circuit 53, the self-holding circuit 68 is operated, the relay contact 69 is closed, and the self-holding state is established. Electric power is supplied by the circuit 53. In a state where the door 2 is closed, the display circuit 55 is operated, and the LEDs corresponding to the automatic cooking key 39 and the manual cooking key 40 are lit, prompting one of them to operate the key. Here, when the cooked product (the object to be heated) placed on the turntable 6 is “milk”, the automatic cooking key 39 is pressed and, for example, the character part of “milk” is turned on, and the start key 47 is pressed. When it is turned on, a warming mode, which is a kind of cooking heating process, is started. Based on the operation of the microcomputer 54, the cooking range timer is started, the driving circuit 81 is operated, the magnetron 80 is operated, and the cooking chamber 4 is operated. Is irradiated with microwaves, and “milk” on the turntable 6 is heated by microwaves. Further, the motor drive circuit 82 is also operated to operate the electric motor 7A, and the turntable 6 is slowly rotated in one direction. Then, after a predetermined time has elapsed, the end of the warming mode is notified by a buzzer, a lamp, or the like, and based on the operation of the microcomputer 54, the drive circuit 81 operates to stop the operation of the magnetron 80, and the motor drive circuit 82 As a result, the motor 7A stops operating, and the turntable 6 stops rotating.

In the case of cooking an oven-heated food (a heated object) stored in the cooking chamber 4 heated by gas or electricity, the cooking chamber 4 may be preheated to a predetermined temperature in advance. This will be described below.

With the heating cooker body 1 installed in a predetermined place such as a system kitchen, the power plug is connected to the outlet of a commercial AC power supply 51, and the door switch 52 is closed and closed by the operation of opening and closing the door 2 once. The power is supplied by 53, the self-holding circuit 68 is operated, the relay contact 69 is closed, the self-holding state is established, and the power is supplied by the power supply circuit 53. In this state, the display circuit 55 operates, and the LEDs corresponding to the automatic cooking key 39 and the manual cooking key 40 are lit, prompting one of them to operate the key.

  When the manual cooking key 40 is turned on here, the manual menu 33B is selected and set to light up, and at the same time, a triangle mark is displayed on the right side of the “range” display. Therefore, each time the manual cooking key 40 is turned on (pressed), the triangle mark sequentially cycles to “combination”, “oven”, and “range”. By turning on the manual menu 33B twice, the triangle mark moves to the character portion of “oven” and the oven mode is set.

In this oven mode, first, an oven mode including a preheating step will be described. While the triangle mark is positioned on the right side of the “oven”, the LEDs corresponding to the time keys 44, 45, 46 are turned on to prompt the time setting, and the temperature up key 42 and the temperature down key 43 are The corresponding LED lights up to prompt the temperature setting. For this reason, by operating the temperature up key 42 and the temperature down key 43, the key input circuit 65 operates to set an arbitrary oven cooking set temperature (for example, 180 ° C.). The set temperature of 180 ° C. is displayed on the 3-digit 8-character setting display section 34, and the set value is stored in the memory 70. In this state, if the cancel key 48 is turned ON among the start key 47 and the cancel key 48 that are lit up by the LED, the start state is restored, but if the operation is continued, the start key 47 is turned ON. As a result, the LED corresponding to the word “preheat” lights up to display the preheat state, the solenoid valve drive circuit 60 operates to open the solenoid valves 13 and 15, and fuel is supplied to the gas burner 9. Then, the igniter drive circuit 61 is operated to cause high-pressure discharge at the ignition electrode 17 and ignite the gas in the gas burner 9. When the start key 47 is turned on, the motor driving circuit 71 is operated to operate (ON) the electric motor 11A of the hot air fan 11 and the electric motor 19 of the cooling fan 20 to enter a preheating start state.

The temperature of the cooking chamber 4 rises due to gas combustion by the gas burner 9 and the operation (ON) of the hot air fan 11, the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27, and the oven stored in the memory 70. Comparison with the set value of the cooking set temperature (for example, 180 ° C.) is sequentially performed, and when the temperature of the cooking chamber 4 reaches this set temperature (the upper limit temperature described later), the solenoid valve 15 is closed by the solenoid valve drive circuit 60. Extinguish the gas burner 9. The electromagnetic valve 13 remains open. When the cooking chamber 4 temperature is lowered by digestion of the gas burner 9 and falls to the lower limit temperature described later, the electromagnetic valve 15 is opened again and the igniter drive circuit 61 is operated to ignite the gas burner 9 and at the same time the hot air fan 11. To drive. As a result, when the cooking chamber 4 temperature rises and reaches an upper limit temperature described later again, the cooking chamber 4 is kept at the oven cooking set temperature until the door 2 is opened after the end of preheating is notified by a buzzer, a lamp or the like. Thus, the solenoid valve 15 is opened and closed by the solenoid valve drive circuit 60, and the gas burner 9 is blinked. The electromagnetic valve 13 remains open. At this time, the electric motor 11A of the hot air fan 11 and the electric motor 19 of the cooling fan 20 are continuously operated (ON) by the motor drive circuit 71. When the door 2 is opened, the combustion of the gas burner 9 is stopped. In the above, the time when the end of preheating is notified by a buzzer, a lamp, or the like is when the set temperature (the upper limit temperature described later) has been reached twice, but is not limited thereto, and may be notified at the first time. The notification may be made at an arbitrary time such as the third time, the fourth time, or a notification method after a predetermined time has elapsed from the first time when the internal temperature reaches a set temperature (upper limit temperature described later).

Thus, in a state where the cooking chamber 4 is maintained at the oven cooking set temperature, the user once opens the door 2 and cooks the food on the turntable 6 (or on the oven cooking plate placed on the turntable 6). (Subject to be heated) is placed and the door 2 is closed. As a result, the LEDs corresponding to the time keys 44, 45, and 46 are turned on to prompt time setting, and the LED corresponding to the “preheat” character on the setting display section 34 is turned off. In this state, the oven cooking timer for setting the oven cooking setting time is set by operating the time keys 44, 45 and 46. This setting oven cooking set time that is is displayed on the 3-digit figure-8 shaped timer section 35, the setting value is stored in the memory 70.

  In this state, the LEDs corresponding to the start key 47 and the cancel key 48 are turned on to prompt the key operation. Here, if the cancel key 48 is turned on, the previous state is restored, but if the operation is to be continued, the start key 47 is turned on to start the oven. Thereby, based on the operation of the microcomputer 54, the set oven cooking timer is started, the oven cooking process is started, the countdown operation is started, the motor driving circuit 82 is also operated, and the electric motor 7A is operated, The turntable 6 rotates slowly in one direction.

And the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27 and the oven cooking set temperature (180 above) stored in the memory 70 so as to keep the cooking chamber 4 at the oven cooking set temperature (180 ° C. above). The heat source unit 10 operates based on the comparison with the set value of [° C.], opens and closes the electromagnetic valves 13 and 14 by the electromagnetic valve drive circuit 60, and controls the ignition electrode 17 by the operation of the igniter drive circuit 61. Then, the motor 11A of the hot air fan 11 and the motor 19 of the cooling fan 20 are operated (ON) and stopped (OFF) by the motor drive circuit 71.

  In the above, for example, in order to keep the oven cooking set temperature at 180 ° C., a so-called thermo-ON is performed by a predetermined upper limit temperature (for example, 185 ° C.) detected by the temperature detection sensor 27 and a predetermined lower limit temperature (for example, 175 ° C.). -OFF control is performed to control the cooking set temperature, which is an average value of the upper limit temperature and the lower limit temperature, to 180 ° C., and the same control operation is performed in any case where the oven cooking set temperature is set to an arbitrary temperature. Is controlled to the set temperature.

For this reason, the temperature of the cooking chamber 4 rises by the start of the oven cooking process, and the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27 is the oven cooking set temperature (180 above) stored in the memory 70. When the temperature reaches an upper limit temperature (for example, 185 ° C.), the solenoid valve 15 is closed by the solenoid valve drive circuit 60 (the solenoid valve 13 remains open), and the motor 11A of the hot air fan 11 is The electric motor 19 of the cooling fan 20 is stopped (OFF). And the temperature of the cooking chamber 4 falls, and the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27 is the lower limit temperature (for example, 180 ° C.) of the oven cooking set temperature stored in the memory 70 (for example, 175 ° C.), the solenoid valve 15 is opened by the solenoid valve drive circuit 60, and the motor 11A of the hot-air fan 11 and the motor 19 of the cooling fan 20 are driven (ON) by the motor drive circuit 71. Thus, the upper limit temperature (thermo OFF temperature, e.g., 185 ° C.) and lower limit temperature (thermo ON temperature, e.g., 175 ° C.) by performing operation control of the hot air fan 11 with combustion control of a gas burner 9, the cooking The inside of the chamber 4 is controlled to a cooking set temperature (an average temperature of the thermo ON temperature and the thermo OFF temperature, for example, 180 ° C.).

  In this way, the oven cooking process proceeds under the condition of the oven cooking set temperature (180 ° C. above), and cooking on the turntable 6 (or on the oven cooking plate placed on the turntable 6). The inside of the object (object to be heated) is baked. This state is performed for the set time of the oven cooking timer. And the oven cooking process is complete | finished by completion | finish of the setting time of an oven cooking timer, and the heat-source part 10 stops. That is, the motor 11A of the hot air fan 11 is stopped (OFF) by the operation of the motor drive circuit 71, and the solenoid valves 13 and 15 are closed by the solenoid valve drive circuit 60, so that gas combustion in the gas burner 9 is not performed. Further, based on the operation of the microcomputer 54, the motor drive circuit 82 is also operated, and the electric motor 7A stops its operation.

In the above embodiment, the gas oven is described. Alternatively, when the heating cooker according to the present invention is an electric oven, the heat source unit 10 is an electric heater in a natural convection heating system, and is forced. The convection heating system includes an electric heater and a hot air fan that circulates air heated by the electric heater to the cooking chamber 4. Also in this case, the heating of the cooking chamber 4 by the heat source unit 10 is stopped until the inside temperature is lowered to the oven cooking set temperature, and in the oven cooking process, the heating of the cooking chamber 4 by the heat source unit 10 is started. Like that. When the heat source unit 10 includes a fan for supplying hot air to the cooking chamber 4, the fan is operated in the preheating process, and the fan is stopped until the inside temperature is lowered to the oven cooking set temperature. By moving to the process, the fan is operated and the timer operation for the oven cooking set time is started. For this reason, the essence of the invention remains unchanged.

Next, an oven mode that does not include a preheating step will be described. In this case, the user once opens the door 2, puts a cooked product (object to be heated) on the turntable 6 (or on an oven cooking dish placed on the turntable 6), and closes the door 2. As described above, when the manual cooking key 40 is turned on, the manual menu 33B is selected and set to light up, and at the same time, a triangle mark is displayed on the right side of the “range” display. Therefore, each time the manual cooking key 40 is turned on (pressed), the triangle mark sequentially cycles to “combination”, “oven”, and “range”. By turning on the manual menu 33B twice, the triangle mark moves to the character portion of “oven” and the oven mode is set. Then, in a state where the triangle mark is located on the right side of the “oven”, the LEDs corresponding to the time keys 44, 45, and 46 light up to prompt time setting, and the temperature up key 42 and the temperature down key 42 LED corresponding to each 43 lights up to prompt the temperature setting. In this state, by operating the temperature up key 42 and the temperature down key 43, the key input circuit 65 operates to set an arbitrary oven cooking set temperature (for example, 180 ° C.). The set temperature of 180 ° C. is displayed on the 3-digit 8-character setting display section 34, and the set value is stored in the memory 70. Next, an oven cooking timer for setting the oven cooking set time is set by operating the time keys 44, 45, and 46. This setting oven cooking set time that is is displayed on the 3-digit figure-8 shaped timer section 35, the setting value is stored in the memory 70.

  In this state, if the cancel key 48 is turned ON among the start key 47 and the cancel key 48 that are lit up by the LED, the previous state is restored, but if the operation is continued, the start key 47 is turned ON. Start the oven. Thereby, based on the operation of the microcomputer 54, the oven cooking timer is operated, the motor driving circuit 82 is also operated to operate the electric motor 7A, the turntable 6 is rotated slowly in one direction, and the electromagnetic valve driving circuit 60 is In operation, the solenoid valves 13 and 15 are opened to supply fuel to the gas burner 9, and the igniter drive circuit 61 operates to cause high-pressure discharge at the ignition electrode 17 to ignite the gas in the gas burner 9. Further, when the start key 47 is turned on, the motor drive circuit 71 is operated, and the electric motor 11A of the hot air fan 11 and the electric motor 19 of the cooling fan 20 are operated (ON).

In a normal state, since the cooking chamber 4 of the cooking device is substantially equal to the ambient temperature before the start of the oven cooking process, the temperature detected by the temperature detection sensor 27 is this ambient temperature. For this reason, the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27 and the memory 70 are stored so that the cooking chamber 4 is kept at the oven cooking set temperature (180 ° C.) by the start of the oven cooking process. On the basis of the comparison with the set value of the oven cooking set temperature (180 ° C.), the heat source unit 10 is operated to open and close the solenoid valve 15 by the solenoid valve drive circuit 60 and to ignite by the operation of the igniter drive circuit 61. The control operation of the electrode 17 and the operation (ON) / stop (OFF) of the motor 11A of the hot air fan 11 and the motor 19 of the cooling fan 20 by the motor drive circuit 71 are performed. At the same time, the set oven cooking timer starts and the countdown operation starts.

That is, by the start of the oven cooking process, the temperature of the cooking chamber 4 rises, and the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27 is the oven cooking set temperature stored in the memory 70 (180 ° C. above). ) Reaches an upper limit temperature (for example, 185 ° C.), the solenoid valve 15 is closed by the solenoid valve drive circuit 60 (the solenoid valve 13 remains open), and the motor 11A and the motor 11A cool the hot air fan 11 by the motor drive circuit 71. The motor 19 of the fan 20 is stopped (OFF). And the temperature of the cooking chamber 4 falls, and the output value of the internal temperature detection circuit 66 detected by the temperature detection sensor 27 is the lower limit temperature (for example, 180 ° C.) of the oven cooking set temperature stored in the memory 70 (for example, 175 ° C.), the solenoid valve 15 is opened by the solenoid valve drive circuit 60, and the motor 11A of the hot-air fan 11 and the motor 19 of the cooling fan 20 are driven (ON) by the motor drive circuit 71. Thus, the upper limit temperature (thermo OFF temperature, e.g., 185 ° C.) and lower limit temperature (thermo ON temperature, e.g., 175 ° C.) by performing operation control of the hot air fan 11 with combustion control of a gas burner 9, the cooking The inside of the chamber 4 is controlled to a cooking set temperature (an average temperature of the thermo ON temperature and the thermo OFF temperature, for example, 180 ° C.).

  Thus, the oven cooking process proceeds under the condition of the oven cooking set temperature (above 180 ° C.), and cooking on the turntable 6 (or on the oven cooking plate placed on the turntable 6). The object (object to be heated) is heated and its inside is baked. This state is performed for the set time of the oven cooking timer. And the oven cooking process is complete | finished by completion | finish of the setting time of an oven cooking timer, and the heat-source part 10 stops. That is, the motor 11A of the hot air fan 11 is stopped (OFF) by the operation of the motor drive circuit 71, and the solenoid valves 13 and 15 are closed by the solenoid valve drive circuit 60, so that gas combustion in the gas burner 9 is not performed. Further, based on the operation of the microcomputer 54, the motor drive circuit 82 is also operated, and the electric motor 7A stops its operation.

In the present invention, as an initial control of a cooking process in which an object to be cooked is stored in the cooking chamber 4 constituting the cooking chamber and heated to a predetermined cooking temperature (for example, 180 ° C.), the cooking temperature setting (for example, 180 °) is performed. The cooking time set by heating up to a temperature (for example, 210 ° C.) higher than (° C.) so that the temperature of the cooking chamber 4 quickly reaches a predetermined cooking set temperature (for example, 180 ° C.). Thus, there is provided a cooking device which can obtain a delicious cooking finish and can reduce the failure rate of the electromagnetic valves 13 and 15 by reducing the number of times of opening and closing the electromagnetic valves 13 and 15 for ON / OFF control of the gas burner 9. .

Cooker of the present invention, the temperature detecting sensor with the exhaust gas temperature exiting the cooking chamber 4 is supplied by the hot air fan 11 of the combustion heat of the gas burner 9 in the cooking chamber 4 for heating and accommodating the article to be cooked detected by 27 controls the gas burner 9, setting the cooking chamber 4 pre cooking set temperature (e.g., 180 ° C.) in the controls heating, cooking set accommodating the article to be cooked in the cooking chamber 4 As an initial control of the cooking process in which the heating is controlled to a temperature (for example, 180 ° C.), the microcomputer 54 that constitutes the control unit sets the temperature setting control temperature (for example, 30 ° C.) to the cooking set temperature (for example, 180 ° C.). plus high heating temperature (e.g., 210 ° C.) until detecting the temperature detection sensor 27, by combustion hot air by combustion of the operation and the gas burner 9 of the hot air fan 11, heating system and cooking chamber 4 To.

The control and temperature characteristics in this case are shown in graph A of FIG. 6 and will be described below with reference to this. As an initial control of the cooking step, a high heating temperature (for example, 210 ° C.) obtained by adding a temperature increase control temperature (for example, 30 ° C.) to a cooking set temperature (for example, 180 ° C.) by the microcomputer 54 constituting the control unit. ) to a temperature detection sensor 27 detects, heating the cooking chamber 4 by combustion hot air by a regular combustion operation and the gas burner 9 by the high-speed rotational speed of the normal hot-air fan 11, temperature sensor 27 is high heating temperature (e.g., 210 ° C.) when it detects, it controls the gas burner 9 in the combustion stop or low combustion state, and controls the hot air fan 11 stops or low speed state. After that, a predetermined upper limit temperature (for example, 185 ° C.) and a predetermined lower limit temperature (for example, 175 ° C.) detected by the temperature detection sensor 27 are used to control the upper limit temperature and the lower limit temperature by so-called thermo ON / OFF control. The cooking setting temperature (for example, 180 ° C.), which is an average value, is controlled, and the temperature detection sensor 27 detects a predetermined upper limit temperature (this is a so-called thermo OFF temperature, for example, 185 ° C.), and then the predetermined lower limit temperature ( This is a so-called thermo-oN temperature, for example, until detecting a 175 ° C.), to control the gas burner 9 in the combustion stop or low combustion state, and controls the hot air fan 11 stops or low speed state. In addition, the graph B of FIG. 6 is a temperature characteristic in a prior art.

As a result, the temperature in the cooking chamber 4 gradually decreases, and accordingly, the temperature of the exhaust passage 23 also decreases, and the temperature detection sensor 27 has a predetermined lower limit temperature (this is a so-called thermo-ON temperature, for example, 175 ° C.). Upon detection of a controls the gas burner 9 in the combustion state of the normal, and controls the hot air fan 11 in high speed rotation state of the regular heating the cooking chamber 4. Thus, a predetermined upper limit temperature at which the temperature detecting sensor 27 detects (thermo OFF temperature, e.g., 185 ° C.) and a predetermined lower limit temperature (thermo ON temperature, e.g., 175 ° C.) by hot air with combustion control of a gas burner 9 It performs operation control of the use fan 11, the cooking chamber 4 in the cooking set temperature (thermo oN temperature and thermo OFF temperature of average temperature, for example, 180 ° C.) for controlling the.

  Before entering the cooking process for heating the inside of the cooking chamber 4 at the cooking set temperature (for example, 180 ° C.), in the cooking device having a preheating function as described above, the preheating process for preheating the cooking chamber 4 is performed. (That is, in the case of a heating state by a heat addition means). In addition, after the cooking process is performed once, the next cooking process may be performed while the inside of the cooking chamber 4 is still maintained at a considerable temperature (when there is residual heat). In such a case, the inside of the cooking chamber 4 reaches the cooking set temperature (for example, 180 ° C.) faster than the case where the cooking process is performed under a completely ambient temperature condition. If heating is performed by adding a predetermined temperature increase control temperature (for example, 30 ° C.) in the same manner as when the cooking process is performed under temperature conditions, unnecessary heating is performed. Moreover, in such a case, there is a possibility that the food to be cooked may burn.

  In the present invention, instead of starting the cooking process under the ambient temperature, the temperature in the cooking chamber 4 at the start of the cooking process (the initial temperature of the cooking process detected by the temperature detection sensor 27) is determined. When the temperature is equal to or higher than a predetermined temperature higher than the ambient temperature, a value (temperature increase control) changed so as to lower the reference temperature increase control temperature (for example, 30 ° C.) plus the cooking set temperature (for example, 180 ° C.). The initial heating control in the cooking process is performed according to the temperature. In this case, when the initial temperature of the cooking process is equal to or higher than a predetermined temperature higher than the ambient temperature, a reference temperature increase control that increases the cooking set temperature (for example, 180 ° C.) as the temperature exceeding the predetermined temperature increases. The temperature (for example, 30 ° C.) is reduced (lower) to prevent unnecessary heating and to prevent the object to be cooked from burning.

  For example, as shown in FIG. 7, when there is no preheating step (preheating pear), when the initial temperature of the cooking step detected by the temperature detection sensor 27 is 80 ° C. or less, the temperature increase control temperature is set to 30 ° C., The microcomputer 54 constituting the control unit is configured so that the temperature rise control temperature is 30 ° C. at 100 ° C. or more, the temperature rise control temperature is 20 ° C. at 120 ° C. or more, and the temperature rise control temperature is 10 at 150 ° C. or more. Be controlled. In this case, the range of more than 80 ° C. and less than 120 ° C. is controlled with a temperature rise control temperature of 30 ° C., and the range of more than 100 ° C. and less than 150 ° C. is controlled with a temperature rise control temperature of 20 ° C.

  Further, as shown in FIG. 7, when there is a preheating process (with preheating), when the initial temperature of the cooking process detected by the temperature detection sensor 27 is 80 ° C. or less, the temperature increase control temperature is set to 30 ° C., Micro that configures the control unit to set the temperature rise control temperature to 20 ° C. at 100 ° C. or more, to 10 ° C. at 120 ° C. or more, and to 0 (zero) at 150 ° C. or more. Controlled by computer 54. In this case, the temperature range exceeding 80 ° C. and less than 100 ° C. is controlled with a temperature rise control temperature of 30 ° C., and the range temperature exceeding 100 ° C. and less than 120 ° C. is controlled with a temperature rise control temperature of 20 ° C. The range of over 150 ° C. is controlled with the temperature rise control temperature set at 10 ° C.

In addition, the temperature increase gradient of the cooking chamber 4 varies depending on the type of cooking object stored in the cooking chamber 4, that is, the size of the heat load. That is, in the case of a heavy heat load such as a sponge cake, the temperature rise of the cooking chamber 4 is slow (the temperature increase gradient is small) compared to the case of a light heat load such as a cream puff or a cookie. The time for reaching the set cooking temperature (for example, 180 ° C.) becomes longer. Therefore, in the present invention, in this case, the gas consumption is suppressed by controlling at a high (large) temperature rise control temperature so that the cooking set temperature set quickly can be reached, the number of times of opening and closing of the solenoid valve 15 to ON-OFF control of the gas burner 9 with less, and configured to provide a cooker capable of reducing the failure rate of the solenoid valve 15. Further, when the initial temperature rise control of the present invention is not performed, the cream of the cream or the like has a problem that the baked color becomes too dark, but this can be solved by the determination of the heat load of the present invention.

  That is, the temperature rise or temperature rise gradient due to the thermal load can be measured substantially depending on how many times the temperature rises after the cooking process is started, and at the initial predetermined time of each cooking process. When the temperature based on the detection by the temperature detection sensor 27 is measured and the temperature is equal to or higher than the reference temperature T0 or higher than T0, it is determined that the load is a light heat load by the microcomputer 54 constituting the control unit, and the temperature rise control temperature is set. It is controlled by the microcomputer 54 constituting the control unit so as to be small. If the temperature based on the detection by the temperature detection sensor 27 is less than the reference temperature T0 or less than T0, it is determined that the microcomputer 54 constituting the control unit is a heavy heat load, and the temperature rise control temperature is set to the light heat load. It is controlled by the microcomputer 54 that constitutes the control unit so as to set the value to a value larger than the above or to return to the reference value.

One example of this is shown in FIG. In this, for each cooking step, the temperature detected by the temperature detection sensor 27 after the initial predetermined time (for example, 30 seconds to 60 seconds) has elapsed is measured, and the temperature is equal to or higher than the reference temperature T0 or T2 higher than T0. In some cases, the microcomputer 54 constituting the control unit determines that the heat load is light. By this determination, the microcomputer 54 constituting the control unit performs control to set the temperature rise control temperature to a value smaller than a reference value (for example, 30 ° C.), for example, 10 ° C. For each cooking step, when the temperature detected by the temperature detection sensor 27 after the initial predetermined time (for example, 30 seconds to 60 seconds) has elapsed is T1 that is less than the reference temperature T0 or less than or equal to T0, the control unit It is determined by the microcomputer 54 that constitutes a heavy heat load. By this determination, the microcomputer 54 constituting the control unit controls the temperature increase control temperature to a value larger than that in the case of the light heat load or to return to a reference value (for example, 30 ° C.). Be controlled.

  Thus, since the temperature rise or temperature rise gradient for a predetermined short time (for example, 30 seconds to 60 seconds) from the start of each cooking step can be measured, the temperature rise or temperature rise gradient is the reference value (predetermined value). If it is greater than the range, control with a lower temperature rise control temperature is performed by the microcomputer 54 constituting the control unit. In addition, when the temperature increase or temperature increase gradient for a predetermined short time (for example, 30 seconds to 60 seconds) from the start of each cooking step is smaller than the reference value (predetermined value), the control for increasing the temperature rise control temperature Alternatively, the intended purpose can be achieved by being performed by the microcomputer 54 constituting the control unit so as to control with the reference value.

  As described above, it is determined at a predetermined short time (for example, 30 seconds to 60 seconds) from the start of each cooking step to determine which temperature increase control temperature is controlled. Therefore, by controlling at a preferable temperature rise control temperature, the energy saving operation, the failure rate of the solenoid valves 13 and 15 are reduced, and preferable cooking can be achieved.

In addition, from the reference temperature T0 when the temperature detected by the temperature detection sensor 27 after the initial predetermined time (for example, 30 seconds to 60 seconds) for each cooking process is less than or less than the reference temperature T0. As the temperature decreases, the temperature rise control temperature may be increased stepwise. In addition, when the temperature detected by the temperature detection sensor 27 after the initial predetermined time (for example, 30 seconds to 60 seconds) for each cooking process has passed or exceeded the reference temperature T0, the reference The temperature rise control temperature may be reduced stepwise as the temperature increases from the temperature T0.

In addition, when the temperature detected by the temperature detection sensor 27 after the initial predetermined time (for example, 30 seconds to 60 seconds) for each cooking process is less than or less than the reference temperature T0, the reference value is increased. The temperature control temperature may be controlled, and when the temperature is higher or higher than the reference temperature T0, the temperature rise control temperature may be controlled to zero (no temperature rise control).

  The cooking device is not limited to the configuration shown in the above-described embodiment, and can be applied to various forms, and includes various forms within the technical scope of the present invention.

It is a front perspective view of the cooking-by-heating machine concerning the present invention. Example 1 It is a vertical side view of the center part of the heating cooker which concerns on this invention. Example 1 It is a vertical side view of the operation panel corresponding | compatible part of the heating cooker which concerns on this invention. Example 1 It is a front view of the operation panel of the heating cooker which concerns on this invention. Example 1 It is a block diagram of the control circuit of the heating cooker which concerns on this invention. Example 1 It is a control temperature characteristic figure of the cooking appliance concerning the present invention. Example 1 It is a related figure of the initial temperature of the cooking process of the cooking device which concerns on this invention, and temperature rising control temperature. Example 1 It is a related figure of the temperature rise of the cooking chamber of the cooking appliance which concerns on this invention, and temperature rising control temperature. Example 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Heating cooker main body 2 ... Door 3 ... Operation panel 4 ... Inside 5 ... Handle 6 ... Turntable 7 ... Electric motor device 10 ... Heat source section 11 ... Hot air fan 11A ... Electric motor 12 ... Gas pipe 13 ... First solenoid valve 14 ... Manual on-off valve 15 ... Second solenoid valve 16 ... Gas Pipe 17 ... Ignition electrode 18 ... Gas supply chamber 20 ... Cooling fan 21 ... Hot air supply hole 22 ... Discharge hole 23 ... Exhaust passage 24 ... Exhaust hole 25 ... Intake hole 26 ... Gas supply unit 27 ... Temperature detection sensor 29 ... Flame detection sensor 31 ... Indicator 32 ... Operation unit 33 ... Cooking menu display unit 33A ... Automatic menu 33B ..Manual menu 39 ... Automatic cooking key 40 ... Manual cooking key 42 ... Temperature up key 43 ... temperature down key 44, 45, 46 ... time key 47 ... start key 48 ... cancel key 50 ... control circuit (control means)
51 ... AC power supply 52 ... Door switch 53 ... Power supply circuit 54 ... Microcomputer 55 ... Display circuit 56 ... Buzzer 57 ... Buzzer circuit 60 ... Solenoid valve drive circuit 61 ... igniter drive circuit 62 ... interior lamp 63 ... interior lamp drive circuit 64 ... door open / close detection circuit 65 ... key input circuit 66 ... interior temperature detection circuit 67 ... Flame detection circuit 68 Self-holding circuit 69 Relay contact 70 Memory 80 Magnetron

Claims (4)

The combustion hot air of the burner is supplied by a fan into a cooking chamber that houses and heats the object to be cooked, and the burner is controlled by detecting the exhaust temperature from the cooking chamber by a temperature detection sensor. In what controls heating to a preset cooking temperature,
And it executes the control unit the initial control of the cooking step of heating control to the cooking set temperature by accommodating the article to be cooked in the cooking chamber,
The controller is
With said cooking setting temperature elevated control temperature plus a high heating temperature to the temperature detection sensor detects that the heating control the cooking chamber by a combustion hot air from the combustion of the burner and the operation of the fan,
When the temperature detected by the temperature detection sensor at the initial stage of the cooking process is equal to or higher than a predetermined temperature higher than the ambient temperature, the temperature rise control temperature is controlled to be lower as the temperature exceeding the predetermined temperature is higher. A cooking device characterized by. The combustion hot air of the burner is supplied by a fan into a cooking chamber that houses and heats the object to be cooked, and the burner is controlled by detecting the exhaust temperature from the cooking chamber by a temperature detection sensor. In what controls heating to a preset cooking temperature,
And it executes the control unit the initial control of the cooking step of heating control to the cooking set temperature by accommodating the article to be cooked in the cooking chamber,
The controller is
And control said cooking setting temperature elevated control temperature plus a high heating temperature to the temperature detection sensor is detected for heating the cooking chamber by a combustion hot air from the combustion of the burner and the operation of the fan,
When the temperature detection sensor detects the high heating temperature, the burner is controlled to stop combustion or to a low combustion state, and the fan is stopped or turned to a low speed rotation state;
Thereafter, the cooking set temperature is set based on a predetermined upper limit temperature and a predetermined lower limit temperature detected by the temperature detection sensor, and until the predetermined lower limit temperature is detected after the temperature detection sensor detects the predetermined upper limit temperature. Controls the burner to be in a combustion stopped or low combustion state and the fan to be stopped or in a low speed rotation state;
When the temperature detected by the temperature detection sensor at the initial stage of the cooking process is equal to or higher than a predetermined temperature higher than the ambient temperature, the temperature control temperature is set to be lower as the temperature exceeding the predetermined temperature is higher. ,
A cooking device characterized by performing . The combustion hot air of the burner is supplied by a fan into a cooking chamber that houses and heats the object to be cooked, and the burner is controlled by detecting the exhaust temperature from the cooking chamber by a temperature detection sensor. In what controls heating to a preset cooking temperature,
While performing the initial control of the cooking process of storing the cooking object in the cooking chamber and controlling the heating to the cooking set temperature by the control unit,
The controller is
Until the temperature detection sensor detects a high heating temperature obtained by adding a temperature rise control temperature to the cooking set temperature, the heating inside the cooking chamber is controlled by the operation of the fan and the combustion hot air due to the combustion of the burner,
When the temperature increase or temperature increase gradient based on detection by the temperature detection sensor is larger than a predetermined value at the initial stage of the cooking process, the temperature is controlled at a low (small) temperature increase control temperature. Cooker . The combustion hot air of the burner is supplied by a fan into a cooking chamber that houses and heats the object to be cooked, and the burner is controlled by detecting the exhaust temperature from the cooking chamber by a temperature detection sensor. In what controls heating to a preset cooking temperature,
While performing the initial control of the cooking process of storing the cooking object in the cooking chamber and controlling the heating to the cooking set temperature by the control unit,
The controller is
Control that heats the cooking chamber by the operation of the fan and combustion hot air due to combustion of the burner until the temperature detection sensor detects a high heating temperature obtained by adding a heating control temperature to the cooking set temperature;
When the temperature detection sensor detects the high heating temperature, the burner is controlled to stop combustion or to a low combustion state, and the fan is stopped or turned to a low speed rotation state;
Thereafter, the cooking set temperature is set based on a predetermined upper limit temperature and a predetermined lower limit temperature detected by the temperature detection sensor, and until the predetermined lower limit temperature is detected after the temperature detection sensor detects the predetermined upper limit temperature. Controls the burner to be in a combustion stopped or low combustion state and the fan to be stopped or in a low speed rotation state;
When the temperature rise or temperature rise gradient based on the detection of the temperature detection sensor is larger than a predetermined value at the initial stage of the cooking process, the control to be the low (small) temperature increase control temperature,
A cooking device characterized by performing .

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