JP3127778B2 - Induction heating cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker used in ordinary households.

[0002]

2. Description of the Related Art In recent years, cookers using induction heating as a heat source have been reviewed from the viewpoint of high heat power and safety, and the proportion of cookers in cookers has been increasing. In this type of cooker, a coil for induction heating is arranged below a ceramic plate called a top plate arranged on the top surface of the product, a high-frequency current of several tens of kilohertz is passed through this coil, and the ceramic plate is An eddy current loss is generated in the pot placed on top of the pot, thereby heating the pot.

FIG. 7 is a block diagram showing the configuration of a conventional general induction heating cooker capable of adjusting such heating power, and FIG. 8 is a diagram of an operation display unit. Reference numeral 101 denotes a DC power supply generated from an AC power supply (not shown), and reference numeral 102 denotes an induction heating unit connected to the DC power supply 101. A heating power setting unit 103 has a plurality of levels (stages), and the user can set one of the heating power levels.
Reference numeral 104 denotes a heating start means for the user to start heating. A control unit 105 receives an input from the heating start unit 104, outputs the input to the induction heating unit 102, and heats the pan (load) 106 at the heating power level set by the heating power setting unit 103. Reference numeral 107 denotes an initial heating power setting unit. When the heating heating power level is not set by the heating heating power setting unit 103 after the power is applied, when heating is started by the heating start unit 104, a predetermined heating heating power level is determined in advance. (Generally set to the maximum heating power) so that the control means 105 starts heating.
Output to

FIGS. 7 and 8 show the operation of the conventional example of this configuration.
This will be described with reference to FIG. 111 is a heating start switch.
Reference numeral 112 denotes a display lamp indicating a heating state. Reference numeral 113 denotes an up / down switch for changing the heat power level setting, and 114 denotes a heat power indicator lamp for displaying the heat power level. Heating start switch 11 serving as heating start means 104 with AC power / DC power 101 applied
When 1 is pressed, the heating state display lamp 112 is turned on.
At the same time, the initial heating power level is output to the control means 105 by the initial heating power setting means 107, and the heating of the pot 106 is started by the induction heating means 102. At that time, a high power portion of the heat power display lamp 114 is lit and displayed at a predetermined initial heat power level (“strong” in this example). If the user wants to set another heating power, he or she changes it with the up / down switch 113.

Further, such an induction heating cooker has a good temperature controllability at the time of heating / heating stop because the pot itself is heated, and is also suitable for cooking which requires temperature control of tempura or the like. The type with a tag is also increasing.

FIG. 9 is a block diagram showing a conventional general configuration of such an induction heating cooker having a temperature control function.
FIG. 10 shows a diagram of the operation display unit.

Reference numeral 201 denotes a DC power supply made from an AC power supply (not shown), and reference numeral 202 denotes an induction heating means connected to the DC power supply 201. 203 detects the temperature of the load (pan) 204 heated by the temperature detecting means. 205
Has a plurality of levels (stages) for controlling the temperature of the load by the control temperature setting means, and the user can select and set one of the set temperatures. 206 is a heating start means for the user to start heating. Reference numeral 207 denotes a control unit which receives the outputs of the heating start unit 206 and the temperature detection unit 203 as input and outputs the temperature to the induction heating unit 202 so as to reach the temperature set by the adjustment temperature setting unit 205 to heat the load 204. Reference numeral 208 denotes a control means for controlling the temperature at a predetermined temperature set before the heating is started by the heating start means 206 after the power is applied (before the control temperature is set by the control temperature setting means 205), and heating is performed. 20
7 is an initial temperature setting means for outputting the set temperature.

FIGS. 9 and 1 show the operation of the conventional example of this configuration.
Explanation will be made using 0. 211 is a heating start switch, and 212 is a display lamp indicating a heating state. 213
Is an up / down switch for changing the temperature setting of the regulated temperature, and 214 is a regulated temperature display lamp for displaying the regulated temperature. When the heating start switch 211 corresponding to the heating start means 206 is pressed with the AC power supply / DC power supply 201 applied, the heating state display lamp 212 is turned on. At the same time, the initial temperature setting means 208 outputs the initial setting temperature to the control means 207, and the induction heating means 202
As a result, heating of the load 204 is started. At that time, a predetermined initial setting temperature (“180 ° C.” in this example)
However, the portion of “180 ° C.” of the regulated temperature display lamp 214 is lit. If the user wants to set another heating power, he or she changes it with the up / down switch 213.

[0009]

However, when adjusting the heating power of the induction heating cooker, depending on the pot or cooking menu used, the user may always use the "low" heating power. In the case of such a user,
In the configuration of the above-described conventional induction heating cooker, after pressing the heating start switch 111, it is necessary to operate the up-down switch 113 to set a desired heating power,
There was a problem that it took time and effort to use each time.

The present invention solves the above-mentioned problems, and sets and stores an initial heating power at the time of starting heating after applying power to a heating power desired by a user, and only starts heating at the start of use (heating power setting). It is a first object of the present invention to provide a convenient induction heating cooker that can be heated by a heat power desired by a user without changing the heating power.

In an induction heating cooker with a temperature control function, the temperature detection means currently mainly used varies in temperature due to the shape of the bottom of a load (pan) used and the like, and the equipment becomes inefficient. In some cases, the load cannot be adjusted to a preset temperature, or there is a case where the user wants to always cook at a temperature of, for example, "160 degrees" depending on a cooking menu. In the case of such a user, in the configuration of the above-described conventional induction heating cooker, after the heating start switch 211 is pressed, the up-down switch 21 is pressed.
3 had to be reset to a desired adjusted temperature, and there was a problem that the operation was troublesome each time it was used.

The present invention solves the above-mentioned problems. The present invention sets and stores an initial set temperature at the time of starting heating after application of power to a desired adjustment temperature of a user, and only starts heating at the start of use. A second object is to provide an easy-to-use induction heating cooker capable of performing heating and temperature adjustment at a desired adjustment temperature of a user (without changing the adjustment temperature setting).

[0013]

In order to achieve the first object, the first object of the present invention is to provide a DC power supply,
Induction heating means connected to the DC power supply, heating power setting means having a plurality of levels and the user setting one of the heating power levels, heating start means for the user to start heating, Control means for receiving an input of the heating start means, outputting the heat to the induction heating means, and heating the load at the heating power level set by the heating power setting means, and controlling the heating power level by the heating power setting means after applying power. If the setting has not been made, when the heating is started by the heating start means, the initial heating power setting means for outputting to the control means to start heating at a predetermined heating power level predetermined in advance, and this initial heating power Initial heating power changing means that can be changed by the user from a predetermined heating power level determined in advance, and the heating power level changed by the initial heating power changing means. It is constituted by the initial thermal storage means for outputting to the control means so as to start heating in a modified initial thermal upon heating by the heating start means after power application is started when 憶 was changed.

In order to achieve the second object, a second object of the present invention is to provide a DC power supply, an induction heating means connected to the DC power supply, and detecting a temperature of a load to be heated. Temperature detecting means for controlling the temperature of the load, adjusting temperature setting means having a plurality of levels for adjusting the temperature of the load, the user selecting and setting one of the set temperatures, and heating start means for the user to start heating. Control means for receiving the inputs of the heating start means and the temperature detection means, outputting the heat to the induction heating means so as to reach the temperature set by the regulated temperature setting means and heating the load, and the heating start means after applying power. Initial temperature setting means for outputting a set temperature to the control means so that heating is performed at a predetermined set temperature which is predetermined when heating is started, and the initial temperature is predetermined. Initial temperature changing means that can be changed by the user from the predetermined temperature set, and storing the set temperature changed by the initial temperature changing means. It is constituted by an initial temperature storage means for outputting to the control means so that the temperature is adjusted and heated at the changed set temperature.

[0015]

According to the first means for solving the above problems, the initial heating power changing means which allows the user to change the initial heating power from a predetermined heating heating power level predetermined, and the heating heating power level changed by the initial heating power changing means. When the heating is started by the heating start means after the power is applied, the heating is started by the changed initial heating power. After the power is applied, the initial heating power at the time of starting heating is set and stored in the desired heating power of the user, and the heating is started only at the start of use (without changing the heating power setting). A convenient induction heating cooker that can be heated can be provided.

According to the second means for solving the problems, an initial temperature changing means for allowing a user to change the initial adjusted temperature from a predetermined predetermined adjusted temperature setting, and an adjustment changed by the initial temperature changing means. When the temperature is stored and changed, the temperature is constituted by an initial temperature storage means for outputting to the control means to start heating at the changed initial adjusted temperature when heating is started by the heating start means after applying power. Therefore, after the power is applied, the initial control temperature when heating is started is set and stored at a temperature desired by the user,
It is possible to provide an easy-to-use induction heating cooker that can perform heating and temperature adjustment at a user's desired adjustment temperature just by starting heating at the start of use (without changing the adjustment temperature setting).

[0017]

【Example】

(Embodiment 1) Hereinafter, a first embodiment will be described with reference to the drawings. FIG. 1 is a block diagram of a configuration of the induction heating cooker according to the present invention, FIG. 2 is a diagram showing an operation display unit of the induction heating cooker, and FIG. 3 is an operation flowchart of the induction heating cooker. Reference numeral 1 denotes a DC power supply made from an AC power supply (not shown), and reference numeral 2 denotes an induction heating means connected to the DC power supply 1. Reference numeral 3 denotes a heating power setting means, which has a plurality of levels (stages) and allows the user to set one of the heating power levels.

Reference numeral 4 denotes heating start means for the user to start heating. 5 is a control means,
An input from the heating start means 4 is output to the induction heating means 2 and the pot (load) 6 is heated at the heating power level set by the heating power setting means 3. 7 is an initial thermal power setting means,
If the heating power level is not set by the heating power setting means 3 after the power is applied, when heating is started by the heating start means 4, a predetermined heating power level (set to the maximum heating power) determined in advance. Is output to the control means 5 to start heating.

Reference numeral 8 denotes an initial heating power changing means, which allows the user to change the initial heating power from a predetermined heating power level. Reference numeral 9 denotes an initial heating power storage means which stores the heating power level changed by the initial heating power changing means 8 and, when the heating power level is changed, when the heating is started by the heating start means 4 after the power is applied, the changed initial heating power is used. Output to the control means 5 to start heating.

FIGS. 1 and 2 show the operation of the embodiment of this configuration.
This will be described with reference to FIG. 11 is a heating start switch and 1
Reference numeral 2 denotes a display lamp indicating a heating state. 13 is an up / down switch for changing the heat power level setting.
Is a heating power indicator lamp for displaying the heating power level. Reference numeral 15 denotes an initial heating power change switch. When this switch is depressed, an initial heating power change mode is set and the initial heating power can be changed. Reference numeral 16 denotes an initial heating power change end switch. When this switch is pressed, the initial heating power change mode ends and the normal operation mode is set. A power switch 17 applies an AC power supply.

A heating start switch 11 corresponding to the heating start means 4 in a state where the AC power supply and the DC power supply 1 are applied.
Is pressed, the heating state display lamp 12 is turned on. At the same time, the initial heating power level is output to the control means 5 by the initial heating power setting means 7, and the heating of the pan 6 is started by the induction heating means 2. At this time, the high power portion of the heat power display lamp 14 is lit to indicate the predetermined initial heat power level (“high” in this example). If the user wants to set another heating power, he or she changes it with the up / down switch 13.

When the user wants to change the initial heating power, the initial heating power change mode can be set by the initial heating power change switch 15 and the initial heating power can be changed by the up-down switch 13. After the change, if this mode is ended by the initial heat power change end switch 16, the changed initial heat power is stored. This part is the initial thermal power changing means 8.
It corresponds to the initial thermal power storage means 9.

Next, a specific operation of the embodiment of the present configuration will be described with reference to FIG. At 21, the power switch 17 is pressed to wait for the application of AC power. If the power switch 17 is pressed, the process proceeds to step 22 and the initial heating power is set to “strong”. Next, at 23, it is determined whether the initial heating power change switch 15 has been pressed when the power switch 17 is pressed and AC power is applied. If it has not been pressed, the process proceeds to step 24, where normal operation is performed. When the heating start switch 11 is pressed, heating is started with the initial heating power "strong". If the initial heating power change switch 15 has been pressed, the process proceeds to 25, and it is determined whether the initial heating power change end switch 16 has been pressed. If it has been pressed, the process proceeds to 24, where normal operation is performed. If not, the process proceeds to steps 26 and 27, and each time the up-down switch 13 is pressed, the initial heating power is changed and stored in accordance with the depression.

For example, when the switch (FIG. 2) on the left side of the up / down switch 13 is pressed twice, the initial heating power becomes "medium".
If the initial heating power change end switch 16 is pressed next, the process proceeds to 24, and the normal operation is performed. Thus, when the heating start switch 11 is pressed, the heating is started with the initial heating power “medium”.
Even if the AC power is stopped once, the initial heating power is stored, so that when the AC power is applied next time and the heating start switch 11 is pressed, the heating can be started with the initial heating power “medium”.

The flowchart of FIG. 3 shows a case where the power is applied for the first time, and the second and subsequent times, the initial heating power setting in step 22 becomes the initial heating power setting previously changed and stored. .

In this embodiment, a switch for setting the initial heating power change mode is provided separately. However, a similar operation is performed by using a switch originally provided (for example, both switches of the up-down switch 13 are simultaneously pressed). It is possible.

(Embodiment 2) Hereinafter, a second embodiment will be described with reference to the drawings. FIG. 4 is a block diagram of the configuration of the embodiment of the induction heating cooker according to the present invention, FIG. 5 is a diagram of the operation display unit, and FIG. 6 is an operation flowchart. Reference numeral 31 denotes a DC power supply made from an AC power supply (not shown), and reference numeral 32 denotes an induction heating means connected to the DC power supply 1. 33 detects the temperature of the load (pan) 34 heated by the temperature detecting means. Numeral 35 is a control temperature setting means having a plurality of levels (stages) for controlling the temperature of the load, and the user can select and set one of the set temperatures. 36 is a heating start means for the user to start heating.

Numeral 37 denotes a control unit which receives the outputs of the heating start unit 36 and the temperature detection unit 33 as inputs and outputs the heat to the induction heating unit 32 so as to reach the temperature set by the adjustment temperature setting unit 35 to heat the load 34. Reference numeral 38 denotes a predetermined temperature (“180 ° C.”) set beforehand when the heating is started by the heating start means 36 after the power is applied (before the adjustment temperature is set by the adjustment temperature setting means 35). ) Is an initial temperature setting means for outputting a set temperature to the control means 37 so that the temperature is adjusted and heated. Reference numeral 39 denotes an initial temperature changing means, which allows the user to change the initial adjusted temperature from a predetermined predetermined adjusted temperature. Numeral 40 denotes an initial temperature storage means which stores the adjusted temperature changed by the initial temperature changing means 39 and, when the temperature is changed, when the heating is started by the heating start means 36 after the power is applied, the changed initial adjusted temperature setting is performed. Is output to the control means 37 to start heating.

FIGS. 4 and 5 show the operation of the embodiment of this configuration.
This will be described with reference to FIG. 41 is a heating start switch, 4
Reference numeral 2 denotes a display lamp indicating a heating state. 43 is an up / down switch for changing the temperature setting of the control temperature;
Reference numeral 44 denotes a control temperature display lamp for displaying the control temperature.
Reference numeral 45 denotes an initial temperature change switch. When this switch is depressed, an initial adjustment temperature change mode is set, and the initial adjustment temperature can be changed. Reference numeral 46 denotes an initial temperature change end switch. When this switch is pressed, the initial adjustment temperature change mode ends and the normal operation mode is set. A power switch 47 applies an AC power. When the heating start switch 41 corresponding to the heating start means 36 is pressed while the AC / DC power supply 31 is applied, the heating state display lamp 42 is turned on.

At the same time, the initial adjusted temperature is output to the control means 37 by the initial temperature setting means 38, and the heating of the load 34 is started by the induction heating means 32. At this time, a predetermined initial adjustment temperature (in this example, “180 ° C.”) is lit on the “180” portion of the adjustment temperature display lamp 44. If the user wants to set another adjusted temperature, he or she changes it with the up / down switch 43.

When the user wants to change the initial control temperature, the user can set the initial control temperature change mode with the initial temperature change switch 45 and change the initial control temperature with the up / down switch 43. After the change, if this mode is ended by the initial temperature change end switch 46, the changed initial adjusted temperature is stored. This portion corresponds to the initial temperature changing unit 39 and the initial temperature storage unit 40.

Next, a specific operation of the embodiment of the present configuration will be described with reference to FIG. At 51, the power switch 47 is pressed to wait for the application of AC power. If the power switch 47 is pressed, the process proceeds to step 52, where the initial adjustment temperature is set to “180 ° C.”. Next, at 53, it is determined whether the initial temperature change switch 45 has been pressed when the power switch 47 is pressed and AC power is applied. If the switch is not pressed, the process proceeds to step 54, where the normal operation is performed. When the heating start switch 41 is pressed, the heating is started at the initial adjustment temperature “180 ° C.”. If the initial temperature change switch 45 has been pressed, the process proceeds to 55, and it is determined whether the initial temperature change end switch 46 has been pressed. If it has been pressed, the routine proceeds to 54, where normal operation is performed. If the switch is not pressed, the process proceeds to steps 56 and 57, and each time the up-down switch 43 is pressed, the initial adjusted temperature is changed and stored accordingly.

For example, when the switch on the left side of the up / down switch 43 in FIG. 5 is pressed twice, the initial control temperature is changed and stored to “160 ° C.”. If is pressed, 5
Proceeding to step 4, the normal operation is performed. Thus, when the heating start switch 41 is pressed, the heating starts at the initial adjustment temperature “160 ° C.”. Further, even if the AC power supply is stopped once, the initial control temperature is stored. Therefore, when the AC power supply is applied next time and the heating start switch 41 is pressed, the heating can be started at the initial control temperature “160 ° C.” It is.

The flowchart of FIG. 6 shows the case where the power is applied for the first time, and the initial adjustment temperature in step 22 becomes the initial adjustment temperature previously set and changed after the second time. .

In this embodiment, a switch for setting the initial control temperature change mode is separately provided. However, a similar operation is performed by using a switch originally provided (for example, simultaneously pressing both switches of the up / down switch 43). It is possible to do.

[0036]

As described above, according to the present invention, the initial heating power changing means which allows the user to change the initial heating power from a predetermined predetermined heating power level, and the heating power changed by the initial heating power changing means. It comprises initial heating power storage means for outputting to the control means to start heating with the changed initial heating power when the heating is started by the heating start means after applying power and when the level is changed and changed. Therefore, after the power is applied, the initial heating power when heating is started is set and stored as a heating power desired by the user, and heating is started only at the start of use (without changing the heating power setting).
It is possible to provide an easy-to-use induction heating cooker that can be heated by a heat power desired by a user.

Further, an initial temperature changing means for allowing the user to change the initial adjusted temperature from a predetermined predetermined adjusted temperature setting, and storing and controlling the adjusted temperature changed by the initial temperature changing means. After the power is applied, when the heating is started by the heating start means, the heating is started at the changed initial adjusted temperature. The initial adjustment temperature at the time of the adjustment is set and stored at the user's desired temperature, and the heating and temperature can be adjusted at the user's desired adjustment temperature only by starting heating at the start of use (without changing the adjustment temperature setting). An easy-to-use induction heating cooker can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an induction heating cooker according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an operation display unit of the induction heating cooker.

FIG. 3 is a flowchart showing the operation of the induction heating cooker.

FIG. 4 is a block diagram showing the configuration of an induction heating cooker according to a second embodiment of the present invention.

FIG. 5 is a diagram showing an operation display unit of the induction heating cooker.

FIG. 6 is a flowchart showing the operation of the induction heating cooker.

FIG. 7 is a block diagram showing a configuration of a conventional induction heating cooker capable of adjusting a heating power.

FIG. 8 is a diagram showing an operation display unit of a conventional induction heating cooker capable of adjusting a heating power.

FIG. 9 is a block diagram showing a configuration of a conventional induction heating cooker capable of adjusting a heating temperature.

FIG. 10 is a diagram showing an operation display unit of a conventional induction heating cooker capable of adjusting a heating temperature.

[Explanation of symbols]

 1, 31 DC power supply 2, 32 Induction heating means 3 Heating power setting means 4, 36 Heating start means 5, 37 Control means 6 Pot 7 Initial heating power setting means 8 Initial heating power changing means 9 Initial heating power storage means 34 Load 35 Adjustment temperature setting Means 38 Initial temperature setting means 39 Initial temperature changing means 40 Initial temperature storage means

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yuji Fujii 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Daizo Ogata 1006 Kazuma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-5-347181 (JP, A) JP-A-62-49126 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H05B 6/12

Claims (2)

(57) [Claims] 1. A direct-current power supply, induction heating means connected to the direct-current power supply, heating power setting means having a plurality of levels and allowing a user to set one of the heating power levels,
Heating start means for the user to start heating, control means for receiving the input of the heating start means, outputting the input to the induction heating means, and heating the load at the heating power level set by the heating power setting means, After that, when the heating power level is not set by the heating power setting means, when the heating is started by the heating start means, the heating means outputs an output to the control means to start heating at a predetermined heating power level. Initial heating power setting means, an initial heating power changing means for allowing a user to change the initial heating power from a predetermined heating heating power level, and a heating heating power level changed by the initial heating power changing means. In this case, when the heating is started by the heating start means after the power is applied, the control means may start heating with the changed initial heating power. Induction heating cooker constructed by initial thermal storage means for outputting to. 2. A user having a DC power supply, an induction heating means connected to the DC power supply, a temperature detection means for detecting a temperature of a load to be heated, and a plurality of levels for adjusting the temperature of the load. Is a control temperature setting means for selecting and setting one of the set temperatures, a heating start means for the user to start heating, and receiving the inputs from the heating start means and the temperature detection means, setting the control temperature setting means. Control means for outputting heat to the induction heating means to heat the load so that the temperature becomes a predetermined temperature, and heating is performed by adjusting the temperature at a predetermined temperature set in advance when heating is started by the heating start means after applying power. An initial temperature setting means for outputting a set temperature to the control means; an initial temperature changing means capable of changing the initial temperature from a predetermined temperature set by a user; The set temperature changed by the initial temperature changing means is stored, and when the temperature is changed, the temperature is adjusted at the changed set temperature when the heating is started by the heating start means after the power is applied, and output to the control means for heating. An induction heating cooker comprising an initial temperature storage means.