JP6697920B2 - Hob - Google Patents

Description

  The present invention relates to a stove capable of controlling the temperature inside a cooking container.

  For example, in the conventional stove described in Patent Document 1 below, a heating unit (“burner” in Patent Document 1) capable of heating a cooking container (“pot” in Patent Document 1) from the outside, an outer surface of the cooking container An outer surface temperature sensor (“temperature sensor” in Patent Document 1) for measuring temperature is provided.

  In the conventional technology, the outer surface temperature sensor for measuring the outer surface temperature of the cooking container is used to control abnormal heating in the cooking container and stop the heating output of the heating unit, or when fried cooking is performed. It is possible to automatically control the heating output of the heating unit so that the oil temperature falls within a certain temperature range close to the target temperature set in a relatively high temperature range.

JP-A-7-77330

  However, in general, in a stove, the outer surface temperature of the cooking container heated by the heating unit may deviate from the temperature in the cooking container by about several degrees Celsius. Moreover, since the degree of temperature deviation between the outer surface temperature of the cooking container and the temperature inside the cooking container depends on the size of the heat capacity of the cooking container, it varies depending on the type of cooking container used. Will be things. Therefore, in the conventional stove, it is difficult to accurately control the temperature in the cooking container to the target temperature unless the type of cooking container to be used (size of heat capacity of the cooking container) is specified. ..

  On the other hand, in the temperature range of 100° C. or lower, which is the boiling point of water, the temperature in the cooking container deviates from the target temperature by several degrees Celsius, such as cooking hot spring eggs and preparing water (hot water) for brewing coffee. There are many cooking types that make a marked difference in the texture of the food to be cooked, and the types of cooking containers used differ depending on the cooking type and user preference, so focus on specific items. Is difficult.

  Regardless of the type of cooking container used, if the temperature inside the cooking container in such a temperature range of 100° C. or less can be accurately controlled, the use and convenience of the cooking stove will be further expanded. Becomes

  In view of the above situation, an object of the present invention is to provide a stove capable of accurately controlling the temperature in the cooking container in a temperature range of 100° C. or lower regardless of the type of the cooking container used.

The stove of the present invention is
A heating part that can heat the cooking container from the outside,
An outer surface temperature sensor for measuring the outer surface temperature of the cooking container,
A storage unit capable of storing cooking information,
A control unit capable of adjusting the heating output of the heating unit based on the cooking information stored in the storage unit is provided,
The storage unit uses, as the cooking information, the type of the cooking container used and the output value of the outer surface temperature sensor when the water in the cooking container used is heated to a target temperature of 100° C. or less. It is configured to store the recorded heating history in association with each other,
The controller outputs the output value of the outer surface temperature sensor when heating the cooking container, in the heating history of the cooking information read from the storage unit based on the type of the cooking container used. The heating output of the heating unit is configured to be adjustable so that the output value of the outer surface temperature sensor corresponds to the target temperature .
A generation unit capable of generating the heating history is provided,
A registration switch capable of determining the output value of the outer surface temperature sensor corresponding to the target temperature by a manual operation in the process of generating the heating history in the generation unit is provided .

According to the present invention, the type of cooking container to be used and the water in the cooking container are heated before heating the cooking container containing the cooking water (including the case where the food to be cooked is contained in the water). Cooking information associated with a heating history recording the output value of the outer surface temperature sensor when heated to a target temperature of 100° C. or less is generated in advance.
In the heating history associated with the type of cooking container in such cooking information, the output value of the outer surface temperature sensor when the water in the cooking container to be used reaches the target temperature is recorded. Therefore, when heating water for cooking, the output value of the external surface temperature sensor is the output value of the external surface temperature sensor that corresponds to the target temperature recorded in the heating history associated with the type of cooking container used. When the size becomes, it becomes possible to correctly detect that the cooking water in the cooking container used is at the target temperature accurately.
Therefore, regardless of the type of cooking container used, that is, the heat capacity of the cooking container used, the temperature inside the cooking container used is determined based on the output value of the external temperature sensor. The heating output of the heating unit can be automatically adjusted so that the temperature becomes exactly the target temperature.
Therefore, according to the present invention, the temperature in the cooking container can be accurately controlled in a temperature range of 100°C or lower regardless of the type of the cooking container used.

  According to this configuration, the target temperature can be set by, for example, the user operating the registration switch in the process of generating the heating history, which is excellent in convenience. For example, the user can arbitrarily set the target temperature corresponding to each cooking type such as hot spring egg, coffee, tea, etc. to a temperature suitable for each cooking type by operating the registration switch.

In the present invention,
The storage unit is configured to be able to store a plurality of the cooking information for each type of the cooking container,
It is preferable that the control unit includes a selection switch capable of selecting the cooking information read from the storage unit by a manual operation.

  According to this configuration, when properly using a plurality of cooking containers of different types, for example, the user can easily change the type of cooking container to be used and the target temperature by operating the selection switch. It will be very convenient.

It is a schematic diagram which shows a stove. It is a block diagram which shows a control structure. It is a graph which deforms and shows an example of a heating history. It is a graph which shows the temperature change of the water for cooking in a cooking container when adjusting the heating output of a heating part.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a body 1 of a gas stove (an example of a “stove”) has a Gotoku 3 on which a cooking container 2 can be placed, a heating unit 4 capable of heating the cooking container 2 from the outside, and an outer surface of the cooking container 2. An outer surface temperature sensor 5 and the like for measuring the temperature are provided.

  There are various types of cooking containers 2 that are supposed to be used in a gas stove, having different heat capacities determined by the shape, the material, and the like. Examples of the shape of the cooking container 2 include a pot, a coffee pot, a kettle, and the like. Examples of the material type of the cooking container 2 include iron, stainless steel, aluminum, brass, pottery, heat-resistant glass, and the like.

  As shown in FIG. 1, the heating unit 4 is composed of a burner that burns gas for heating. The heating unit 4 can heat the lower bottom portion of the cooking container 2. The outer surface temperature sensor 5 is composed of a thermistor which is a contact type sensor capable of measuring the outer surface temperature of the cooking container 2 by contacting the lower bottom portion of the cooking container 2 placed on the Gotoku 3. The outer surface temperature sensor 5 measures the outer surface temperature of a portion deviated from the portion heated by the heating unit 4 on the lower bottom portion of the cooking container 2.

  As shown in FIGS. 1 and 2, the gas stove main body 1 includes a mode changeover switch 6, a manual adjustment unit 7, a selection switch 8, a removable water temperature sensor 9, a start switch 10, a registration switch 11, and a temperature adjustment. A unit 12, a time input unit 13, a controller 14 including a microcomputer, and a display device 15 including a liquid crystal display and the like are provided.

  The mode changeover switch 6, the selection switch 8, the start switch 10, and the registration switch 11 are each constituted by a push-type button switch. The manual adjustment unit 7 is composed of an ignition cock whose output can be continuously changed from zero to maximum. The temperature control unit 12 and the time input unit 13 each include an increase switch and a decrease switch that are push button switches.

  The controller 14 shown in FIGS. 1 and 2 is capable of controlling the magnitude of the heating output of the heating unit 4, controlling the information displayed on the display device 15, and the like.

  As shown in FIG. 2, the controller 14 has a control unit 16 capable of adjusting the heating output of the heating unit 4, a timer unit 17 capable of measuring time, and a generation capable of generating cooking information K including a heating history H described later. A unit 18, a storage unit 19 capable of storing and changing the cooking information K generated by the generation unit 18, and a display output unit 20 for controlling output to the display device 15 are provided.

  As shown in FIG. 2, the controller 14 includes an outer surface temperature sensor 5, a mode changeover switch 6, a manual adjustment unit 7, a selection switch 8, a water temperature sensor 9, a start switch 10, a registration switch 11, a temperature adjustment unit 12, and a time input unit. It is connected to 13, and information from each unit can be acquired.

  The control unit 16 shown in FIG. 2 can be switched to various modes such as a manual mode, a setting mode, and a low temperature control mode based on the operation of the mode changeover switch 6.

[About manual mode]
When the control unit 16 is switched to the manual mode by operating the mode changeover switch 6 shown in FIGS. 1 and 2, it becomes possible to manually adjust the heating output of the heating unit 4 based on the operation of the manual adjustment unit 7. ..

  When the start switch 10 is operated and the manual adjustment unit 7 is operated, the control unit 16 causes the heating unit 4 to start heating the cooking container 2. The control unit 16 changes the magnitude of the heating output of the heating unit 4 according to the operation amount of the manual adjustment unit 7. When the start switch 10 is operated again, the control unit 16 makes the heating output of the heating unit 4 zero and stops the heating of the cooking container 2. In the manual mode, by operating the manual adjustment unit 7, for example, cooking in a high temperature region such as fried cooking or fried cooking can be performed.

  In the manual mode, the display output unit 20 causes the display device 15 to display the output value A1 of the outer surface temperature sensor 5.

  In the manual mode, when the cooking container 2 becomes too hot and the output value A1 of the outer surface temperature sensor 5 reaches an abnormal value, the control unit 16 sets the heating output of the heating unit 4 to zero. There is.

[Registering cooking information in setting mode]
When the control unit 16 is switched to the setting mode by operating the mode changeover switch 6 shown in FIGS. 1 and 2, the cooking information K can be registered or changed.

  As shown in FIG. 2, the cooking information K includes the type of the cooking container 2, the target temperature P of 100° C. or less, and the outer surface temperature sensor 5 when the water in the cooking container 2 is heated to at least the target temperature P. Of the heating history H, which is recorded by associating the output value A1 of the above and the temperature A2 of the water in the cooking container 2 with each other. That is, the cooking information K corresponds to the cooking type executed in the cooking container 2 used.

The procedure for registering the cooking information K is as follows.
First, as shown in FIG. 1, water is put in the cooking container 2 to be registered, the cooking container 2 containing the water is installed in Gotoku 3, and the outer surface temperature of the cooking container 2 can be measured by the outer surface temperature sensor 5. In addition to the state, the detection part of the water temperature sensor 9 is put in the cooking container 2 so that the temperature of the water in the cooking container 2 can be measured by the water temperature sensor 9.

  As shown in FIGS. 1 and 2, the water temperature sensor 9 is detachably connected to the generation unit 18 of the controller 14 via a connection unit 21 provided in the main body 1. As can be understood from the fact that the water temperature sensor 9 is shown by the chain double-dashed line in FIG. 1, when the water for cooking is actually heated, it is removed from the cooking container 2.

  Next, the selection switch 8 shown in FIGS. 1 and 2 selects a memory number for registering the cooking information K. Here, it is preferable that the memory number can be associated with a registered name that can recognize the type of cooking container 2 used by the user and the type of cooking type (or target temperature P). Then, when the start switch 10 is operated, the control unit 16 starts heating the cooking container 2 by the heating unit 4 while keeping the heating output of the heating unit 4 constant. Then, every time the temperature A2 of the water in the cooking container 2 measured by the water temperature sensor 9 changes by 1° C. by the generation unit 18, the output value A1 of the outer surface temperature sensor 5 and the cooking container 2 measured by the water temperature sensor 9 are generated. The generation of the heating history H in which the data associated with the temperature A2 of the inside water is collected is started. The heating history H shown in FIGS. 2 and 3 is shown in a deformed form for easy understanding.

  As shown in FIG. 3, in the process of generating the heating history H, the generation unit 18 is operated until the water in the cooking container 2 boils (the water temperature A2 exceeds the target temperature P and reaches an equilibrium state at 100° C.). The heating history H is continuously generated.

  In the setting mode, the display output unit 20 measures the selected memory number, the heating history H, the output value A1 of the outer surface temperature sensor 5, and the water temperature sensor 9 on the display device 15 shown in FIGS. The temperature A2 of water in the cooking container 2, the registered target temperature P, etc. are displayed.

  When the registration switch 11 is operated in the process of generating the heating history H, the temperature A2 of the water in the cooking container 2 measured by the water temperature sensor 9 at the time of operating the registration switch 11 is stored as the target temperature P. The target temperature P, the type of the cooking container 2 and the heating history H are linked and stored in the storage unit 19. It is possible to record a plurality of such target temperatures P for each cooking information K in the storage unit 19. That is, the registration switch 11 is configured to be able to determine the output value A1 of the outer surface temperature sensor 5 corresponding to the target temperature P by the manual operation of the registration switch 11 in the process of generating the heating history H in the generation unit 18. There is.

  That is, as shown in FIG. 2, in the process of generating the heating history H, until the temperature A2 of the water in the cooking container 2 measured by the water temperature sensor 9 reaches the target temperature P set to at least 100° C. or less. Heating is performed. In the heating history H, until the temperature A2 of the water in the cooking container 2 reaches 100° C., that is, until the water in the cooking container 2 boils (the temperature of the water in the cooking container 2 reaches an equilibrium state), It is preferable that the correspondence between the output value A1 of the outer surface temperature sensor 5 and the temperature A2 of the water in the cooking container 2 measured by the water temperature sensor 9 is recorded.

  When the start switch 10 is operated again in the process of generating the heating history H, the control unit 16 sets the heating output of the heating unit 4 to zero, and the cooking information K including the heating history H is registered in the storage unit 19. ..

  In this way, as shown in FIG. 2, the storage unit 19 stores the type of the cooking container 2, the target temperature P of 100° C. or less, and the water in the cooking container 2 as the cooking information K in each memory number. The heating history H in which the output value A1 of the outer surface temperature sensor 5 and the temperature A2 of the water in the cooking container 2 recorded in association with each other when heated to at least the target temperature P of 100° C. or less are associated and stored. Is configured. The storage unit 19 is configured to be able to store a plurality of such cooking information K for each type of cooking container 2.

[About low temperature control mode]
When the control unit 16 is switched to the low temperature control mode by operating the mode changeover switch 6 shown in FIGS. 1 and 2, the heating unit 4 is heated so that the temperature A2 of the water in the cooking container 2 becomes the target temperature P. The output can be adjusted automatically.

  First, the selection switch 8 selects the cooking history H corresponding to the cooking container 2 to be used and the cooking information K including the target temperature P corresponding to the type of cooking to be performed. That is, the cooking information K read from the storage unit 19 in the control unit 16 can be manually selected by the manual operation of the selection switch 8. Next, by operating the time input unit 13, the maintenance time T is set for each target temperature P. Then, when the start switch 10 is operated, heating of the cooking container 2 by the heating unit 4 is started.

  The control unit 16 shown in FIG. 2 reads the cooking information K registered in the memory number corresponding to the type of the cooking container 2 used from the storage unit 19 in the low temperature control mode, and reads the read cooking information. The temperature A2 of the cooking water in the cooking container 2 corresponding to the output value A1 of the outer surface temperature sensor 5 is obtained from the heating history H included in the information K, and the temperature A2 of the cooking water is obtained based on the heating history H. However, the heating output of the heating unit 4 is adjustable so as to reach the target temperature P included in the read cooking information K.

  When the temperature A2 of the cooking water obtained based on the heating history H is lower than the target neighboring temperature Q which is lower than the target temperature P by a predetermined temperature in the low temperature control mode, the control unit 16 heats the heating unit 4. Is set to the same output as in the setting mode to heat the cooking container 2.

  In the low temperature control mode, the control unit 16 reaches the target vicinity temperature Q in which the temperature A2 of the cooking water obtained based on the heating history H is lower than the target temperature P by a predetermined temperature, as shown in FIG. Then, the heating output of the heating unit 4 is gradually reduced as the obtained water temperature A2 rises from the target vicinity temperature Q to the target temperature P.

  Then, when the temperature A2 of the water in the cooking container 2 obtained based on the heating history H reaches the target temperature P, the heating output of the heating unit 4 becomes the minimum, and the time measurement by the timer unit 17 is started. When the temperature A2 of the water in the cooking container 2 calculated based on the heating history H falls below the target temperature P by 2°C or more, the heating output of the heating unit 4 increases again. When it is determined that the maintenance time T has elapsed since the timer unit 17 started the time measurement, the control for adjusting the heating output of the heating unit 4 so that the temperature A2 of the water in the cooking container 2 becomes the target temperature P is performed. finish. When a plurality of target temperatures P are set, control of the heating output of the heating unit 4 is started based on the target temperature P having the next highest temperature. When the control of the heating output of the heating unit 4 for all the target temperatures P is completed, the control unit 16 sets the heating output of the heating unit 4 to zero.

  In the low temperature control mode, the display output unit 20 causes the display device 15 to display the selected memory number, the obtained water temperature A2 in the cooking container 2, the target temperature P, the remaining time of the maintenance time T, and the like. It is like this.

  In the low temperature control mode, when the cooking container 2 becomes too hot and the output value A1 of the outer surface temperature sensor 5 reaches an abnormal value, the control unit 16 sets the heating output of the heating unit 4 to zero. Is becoming

[Regarding target temperature adjustment in setting mode]
In this way, when it is desired to adjust the target temperature P by evaluating the workability of the food to be cooked using the water for cooking in the cooking container 2 heated in the low temperature temperature control mode, as shown in FIG. By operating the mode changeover switch 6 shown in FIG. 2, the control unit 16 is set to the setting mode.

  Then, the selection switch 8 selects the memory number in which the cooking information K for changing the target temperature P is recorded. Next, the target temperature P included in the cooking information K can be arbitrarily increased or decreased by operating the temperature adjustment unit 12 for each target temperature P. The target temperature P can be changed in units of 1°C. For example, if the target temperature P is increased by 1° C., the data used in the heating history H is shifted by one to the higher temperature side. Thereby, the target temperature P can be easily adjusted so that the temperature of the water in the cooking container 2 is managed at a temperature more suitable for cooking.

[Example of use of low temperature control mode]
Below, the cooking type which can use the above-mentioned low temperature control mode suitably is illustrated for reference.
<1> Onsen egg As the cooking container 2, a pot or the like is used. The egg white begins to change at about 56°C and completely solidifies at 80°C, and the egg yolk starts to change at about 64°C and completely solidifies at 70°C. For this reason, if the target temperature P is registered at a temperature of about 65° C. to 69° C. in accordance with the finishing condition such as the semi-ripening degree and the taste, the hot spring eggs can be suitably cooked.

<2> Coffee As the cooking container 2, a coffee pot or the like is used. Although the temperature of water (hot water) suitable for brewing coffee varies depending on the type and roast of coffee beans, the target temperature P is registered at a temperature of about 84°C to 90°C according to the characteristics of the coffee beans. If you keep it, you can brew delicious coffee.

<3> Tea As the cooking container 2, a kettle or the like is used. Although the temperature of water (hot water) suitable for brewing tea varies depending on the place of origin and type of tea, if the target temperature P is registered at a temperature of about 55°C to 100°C depending on the characteristics of the tea. , You can brew delicious tea.

<4> Combined soup of kelp and bonito As a cooking container 2, a pot or the like is used. Put the kelp in the cooking container 2 in a state where the water in the cooking container 2 is at room temperature, set the target temperature P to a temperature of about 80° C. to 85° C., and obtain the required water temperature A2 of the cooking container 2. When the target temperature P is reached, the shaving bonito is added to the water (hot water) in the cooking container 2. This makes it possible to take a delicious dashi stock of kelp and bonito. In this case, it is preferable to include a buzzer or the like for notifying that the calculated water temperature A2 in the cooking container 2 has reached the target temperature P.

[Another embodiment]
Hereinafter, another embodiment of the present invention will be described. Each of the following different embodiments can be applied to the above embodiment in combination as long as no contradiction occurs. The scope of the present invention is not limited to the contents of these embodiments.

(1) In the above embodiment, the storage unit 19 is capable of storing a plurality of cooking information K, but the present invention is not limited to this. For example, only one cooking information K may be stored in the storage unit 19.

(2) In the above-described embodiment, the target information P that can be set in the cooking information K is exemplified, but the present invention is not limited to this. For example, only one target temperature P may be set in the cooking information K.

(3) In the above embodiment, the case where the cooking information K is manually registered in the storage unit 19 in the setting mode is illustrated, but the present invention is not limited to this. For example, when the type of cooking container 2 used is limited to some extent, the cooking information K may be registered in the storage unit 19 in advance.

(4) In the above embodiment, the start switch 10 is operated after the memory number for registering the cooking information K is selected by the selection switch 8 to start the generation of the heating history H included in the cooking information K. Although the thing is illustrated, it is not restricted to this. For example, the generation of the heating history H included in the cooking information K at the selected memory number may be started by long-pressing the selection switch 8 at the position of the memory number where the cooking information K is desired to be registered. ..

(5) In the above embodiment, the heating history H is generated when the water in the cooking container 2 is heated to boiling in the setting mode, but the present invention is not limited to this. For example, in the setting mode, the heating history H when the water in the cooking container 2 is heated to reach the target temperature P may be generated. That is, in the setting mode, the heating history H may be generated when the water in the cooking container 2 is heated to at least the target temperature P.

(6) In the above embodiment, the generation unit 18 of the controller 14 can acquire the information of the water temperature sensor 9 in the setting mode, but the present invention is not limited to this. For example, in the setting mode, the water temperature sensor 9 that is not connected to the generation unit 18 of the controller 14 may measure the temperature A2 of the water in the cooking container 2. In this case, by operating the registration switch 11 when the water temperature A2 measured by the water temperature sensor 9 reaches the target temperature P, the water measured by the water temperature sensor 9 when the registration switch 11 is operated. The set temperature of the output value A1 of the outer surface temperature sensor 5 corresponding to the temperature A2 (target temperature P) is obtained. When the output value A1 of the outer surface temperature sensor 5 reaches the set temperature, it can be seen that the temperature A2 of the water in the cooking container 2 has reached the target temperature P. Therefore, in the automatic temperature control mode, The temperature A2 of the water in the cooking container 2 can be automatically adjusted to the target temperature P only by measuring the outer surface temperature.

(7) In the above embodiment, the target temperature P included in the cooking information K can be changed in units of 1° C. in the setting mode, but the present invention is not limited to this. For example, the unit capable of changing the target temperature P may be a unit of less than 1° C. or a unit of temperature exceeding 1° C. Along with this, in the heating history H, the temperature unit in which the output value A1 which is the outer surface temperature of the cooking container 2 measured by the outer surface temperature sensor 5 and the water temperature A2 in the cooking container 2 which is measured by the water temperature sensor 9 also correspond to each other. It is preferable to change it.

(8) In the above embodiment, the control unit 16 capable of switching to various modes such as a manual mode, a setting mode, and a low temperature/temperature control mode is illustrated, but the present invention is not limited to this. For example, in addition to the manual mode, the setting mode, and the low temperature control mode, the temperature in the cooking container 2 suitable for fried cooking can be automatically controlled, and the temperature in the cooking container 2 suitable for cooking rice can be adjusted. The control unit 16 may be capable of switching to another mode such as a rice cooking mode in which the temperature can be automatically adjusted.

(9) In the above-described embodiment, the gas stove is exemplified as the “stove”, but the present invention is not limited to this, and may be another “stove” such as an electric stove or an electromagnetic cooker. In this case, an infrared sensor or the like can be used as the outer surface temperature sensor.

  INDUSTRIAL APPLICABILITY The present invention can be used for a commercial or household stove that requires temperature management in a temperature range of 100° C. or lower.

2: Cooking container 4: Heating unit 5: External temperature sensor 8: Selection switch 16: Control unit 18: Generation unit 19: Storage unit A1: Output value A2: Water temperature H: Heating history K: Cooking information P: Target temperature

Claims (2)

A heating part that can heat the cooking container from the outside,
An outer surface temperature sensor for measuring the outer surface temperature of the cooking container,
A storage unit capable of storing cooking information,
A control unit capable of adjusting the heating output of the heating unit based on the cooking information stored in the storage unit is provided,
The storage unit uses, as the cooking information, the type of the cooking container used and the output value of the outer surface temperature sensor when the water in the cooking container used is heated to a target temperature of 100° C. or less. It is configured to store the recorded heating history in association with each other,
The controller outputs the output value of the outer surface temperature sensor when heating the cooking container, in the heating history of the cooking information read from the storage unit based on the type of the cooking container used. The heating output of the heating unit is configured to be adjustable so that the output value of the outer surface temperature sensor corresponds to the target temperature .
A generation unit capable of generating the heating history is provided,
A stove including a registration switch capable of determining an output value of the outer surface temperature sensor corresponding to the target temperature by a manual operation in the process of generating the heating history in the generation unit . The storage unit is configured to be able to store a plurality of the cooking information for each type of the cooking container,
The stove according to claim 1 , further comprising a selection switch that allows the control unit to manually select the cooking information read from the storage unit.

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