JP3110928B2 - microwave - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven for heating an object to be heated by microwave energy, and more particularly to a microwave oven having an ion water conditioning function.

[0002]

2. Description of the Related Art Multi-functionalization of microwave ovens has been expanded to grill cooking and oven cooking by heater heating in addition to microwave heating, and furthermore, not only heating function but also preparation function has been added. . For example, "kneading" flour, water, and yeast, like bread dough making. This operation is performed by setting a container containing foodstuffs in the heating chamber and rotating the blades installed in the container. The rotational force of the blade is transmitted from a motor provided outside the heating chamber.

In addition to this "kneading" operation, with the spread of inverter power supplies, a "stirring" operation of heating a stewed dish such as stew or curry in a container while stirring it with a blade, a sharp cutter in place of the blade With this cutter, the chopping of vegetables and other ingredients put in containers has been added. Thus, recent microwave ovens have shifted to automatic cooking devices having various cooking functions in addition to the heating function (for example,
See Japanese Utility Model Application Laid-Open No. 4-85001 and JP-A-4-208313).

[0004]

By the way, recently, the tendency toward health has been increased, and interest in the taste of foods and the influence of the foods on humans has been increasing. Among them, alkaline ionized water has attracted attention. Alkaline ionized water is alkaline water having a pH of about 8 to 11, and has a higher content of minerals such as calcium ions, sodium ions, and potassium ions that are useful and easy to be absorbed by the human body than the original water. Osmotic pressure and dissolving power increase due to the small size of

[0005] For this reason, when used for cooking, rice can be cooked plumply and deliciously, boiled food can be cooked softly without distorting, suitable for removing vegetables, tea and coffee It is known that there is an effect such as that it can be added deliciously.

[0006] It is an object of the present invention to further expand the multifunctionality of a microwave oven and to provide a microwave oven capable of producing alkaline ionized water from tap water or well water.

[0007]

A first invention of a microwave oven according to the present invention comprises a cooking container and a range housing, and the cooking container is placed on a container main body in which an inner container is stored and an upper surface of the container main body. The range housing consists of a heating chamber that houses the object to be heated, a high-frequency generator that irradiates microwaves into the heating chamber, a DC power supply that generates a DC voltage, and heating. A power supply terminal that is installed in a room and outputs a DC voltage from a DC power supply, and a designation unit that designates the pH value of the ionic water to be generated, and controls the energization time of the DC voltage to obtain the ionic water having the pH value designated by the designation unit. Control means, the cooking vessel filled with water is placed in the heating chamber, the DC electrode and the power supply terminal are connected,
A DC voltage is applied to the DC electrode while controlling the current supply time by the control means to electrolyze the water, and the inner container is used as a separation membrane to generate ionized water having a pH value designated by the designation means in the cooking vessel. Is configured such that when water in a cooking vessel placed in a heating chamber is heated by a high-frequency generator, the state of the water is monitored by a sensor, and the power supply is cut off before the water boils.

[0008] A second invention of a microwave oven according to the present invention is a cooking device comprising a container main body in which an inner container is housed, and a lid covered on the upper surface of the container main body and having a DC electrode mounted on the back surface. A container, a heating chamber for accommodating the object to be heated therein, a high-frequency generating means for irradiating the heating chamber with microwaves, a DC voltage supplying means for supplying a DC voltage to a DC electrode of the cooking vessel, and ionic water to be generated. a cooking device having a range housing comprising a designating means for designating a pH value, and a control means for controlling an energizing time of the DC voltage in order to obtain ionized water having a pH value designated by the designating means; The container is placed in a heating chamber, and the water is electrolyzed by applying a DC voltage to a DC electrode while controlling the energizing time by the control means, and the pH specified by the designating means in the cooking vessel with the inner container as a separation membrane. Value of IO To produce water, in generating the ionized water by conduction drive the high-frequency generating means by the control means, configured to heat the water in the cooking vessel.

In a third aspect of the microwave oven according to the present invention, a rectifier circuit for receiving microwaves and converting the microwaves into a DC voltage is provided on the back surface of the lid of the cooking container. Heating chamber to be housed, high-frequency generating means for irradiating microwaves into the heating chamber, specifying means for specifying the pH value of the ionic water to be generated, and energizing time of the high-frequency generating means for obtaining ion water having the pH value specified by the specifying means A cooking vessel containing water therein is placed in a heating chamber, and the control means drives a high-frequency generating means to apply a DC voltage to a DC electrode to electrolyze water. The inner container is used as a separation membrane to generate ionized water having a pH value designated by the designation means in the cooking vessel.

In this case, the control means according to the first or second invention detects the pH value designated by the designation means and the value of the current flowing from the DC power supply to the DC electrode to control the energization time, and designates the designated time by the designation means. It may be configured to generate ionized water having a pH value. In this case, when the detected current value is a current value outside the preset range, the control unit may determine that the electric power is erroneously used and cut off the current or issue a warning. Further, in order to shorten the energization time, the magnitude of the DC voltage applied to the DC electrode may be switched.

Further, the DC electrode according to the first to third aspects of the present invention is such that the height of the electrode plate provided outside the lid is equal to or higher than the height of the electrode plate provided inside the lid. You may comprise. In this case, the tip of the electrode plate installed on the outside may be bent into an L-shape.

Further, the rectifier circuit according to the third aspect of the present invention may have a structure in which the DC electrode is covered by a shield case formed integrally with an electrode plate provided outside the lid body. .

The control means according to the first to third aspects of the present invention monitors the state of the water by the sensor means when the high-frequency generation means heats the water, and cuts off the power supply before the water boils. You may comprise. In this case, a configuration may be adopted in which a humidity sensor that detects the amount of water vapor is used as the sensor means.

[0014]

In the configuration of the microwave oven according to the first invention of the present invention, in order to perform the water preparation of the ionized water, a cooking vessel filled with water is housed in a heating chamber, and the DC electrode of the lid is connected via a lead wire or the like. To the power terminal inside the heating chamber. When the ion water conditioning function is started in this state, a DC voltage is applied to the DC electrode, so that acidic ion water is generated around the positive electrode plate and alkali ion water is generated around the negative electrode plate.
In addition, by controlling the power supply time by the control means, ionic water having a pH value designated by the designation means can be generated. Also,
When using the generated ion water by heating it in the heating chamber,
The amount of water vapor generated is measured by a humidity sensor so that the water does not boil and spill out of the cooking vessel or the quality of the DC electrode is not impaired by heating, and the drive of the high-frequency generator is shut off before the water boils I do.

According to the configuration of the microwave oven according to the second aspect of the present invention, when generating the ionized water, the control means drives the high-frequency generating means to energize the water, so that the water is warmed. Quicker generation.

[0016]

Further, in the first invention, the specified pH
If the value of the ionized water is controlled only by a preset energizing time, the pH of the generated ionized water may differ due to a difference in water quality or water temperature. For this reason, if the current supply time is controlled by detecting the value of the current flowing from the DC power supply to the DC electrode, ionic water having the specified pH value can be accurately obtained.

Since the high-purity water has a small current value and is slow to be ionized, the control circuit sets the energization time to be long, but switches the magnitude of the DC voltage applied to the DC electrode. This may shorten the energization time. In addition, if the value of the current flowing from the DC power supply to the DC electrode is detected, erroneous use of the microwave oven can be detected. For example, if there is no water, the current value is zero. In such a case, the power supply is cut off or a warning is issued.

In the configuration of the microwave oven according to the third invention of the present invention, in order to perform water conditioning with ion water, a cooking vessel filled with water is placed in a heating chamber, and the water conditioning function is started to start high-frequency operation. A microwave is generated from the generating means. A part of the generated microwave is absorbed by the water in the container body to warm the water, and the rest is converted to a DC voltage by a rectifier circuit and applied to the DC electrode. As a result, the water is electrolyzed, and ionic water having a pH value specified by the specifying means is generated around the positive electrode plate and the negative electrode plate. In this configuration, a connecting member such as a lead wire is not required, so that it is easy to handle, and since the water is heated, the generation of ionized water is hastened.

In these inventions, the height of the positive electrode plate installed outside the lid of the DC electrode installed on the lid is made equal to or higher than the height of the negative electrode plate installed inside the lid. With this configuration, the lid can be stably placed when placed alone on a table or the like.

In this case, in the third invention, in the case of a structure in which the rectifier circuit provided on the back surface of the lid is covered with a shield case, the structure is simplified by forming a DC electrode plate integrally with the shield case. Can be. Furthermore, by configuring the rectifier circuit and the DC electrode plate so as to be detachable from the lid, the cooking container can be used also as a normal cooking container for heating.

When the produced ion water is used by heating it in a heating chamber, the amount of water vapor generated so that the water does not boil and spill out of the cooking vessel or the quality of the DC electrode is not impaired by the heating. Is measured by the humidity sensor, and the driving of the high frequency generating means is shut off before the water boils.

[0023]

FIG. 1 is a block diagram showing an embodiment of a microwave oven according to the present invention. A rotating shaft 2 for rotating a cooking vessel is mounted on the bottom of a heating chamber 1, and a DC power supply is provided on a ceiling. And a gas sensor 5 and a humidity sensor 6 are attached to the exhaust port 4 respectively.

A high frequency source 7 such as a magnetron for generating a microwave is provided outside the heating chamber 1, and the generated microwave is sent into the heating chamber 1 through a waveguide 8. Further, a cooling fan 9 for air-cooling the high frequency generation source 7 and a motor 10 for driving the rotating shaft 2 are provided outside the heating chamber 1.

The cooking vessel 11 housed in the heating chamber 1 comprises a vessel body 12 and a lid 13 as shown in FIG.
The container main body 12 is provided with a concave groove 12a that engages with the rotating shaft 2 on the bottom surface. On the back surface of the lid 13, a pair of electrode plates 14 a for an anode and 14 b for a cathode are respectively attached as a DC electrode plate 14. In this embodiment, the positive electrode plate 14a is attached to the inside and the negative electrode plate 14b is attached to the outside. The material of the positive electrode plate 14a is mainly made of a material with little durability and dissolution, such as a ferrite electrode or platinum-fired titanium, and the negative electrode plate 14b is made of stainless steel.

An inner container 15 is accommodated in the cooking container 11. The inner container 15 is made of high quality clay or the like at a high temperature (700
(1500 ° C.), mainly using unfired, etc.
When water is electrolyzed, it acts as a separation membrane for separating acidic ionic water and alkaline ionic water. The inner container 15 is housed such that the positive electrode plate 14a is positioned inside the inner container 15 and the negative electrode plate 14b is positioned outside the inner container 15 when the lid 13 is put on the container body 12.

A lead wire 16 is connected to the electrode plate 14. The lead wire 16 extends from the back of the lid 13 to the lid 13.
13, is taken out through a hole formed in the center of the plug 3, is detachably fitted to the jack 3 by a plug 17 attached to the tip, and applies a DC voltage from a DC power supply circuit described later to the electrode plate 14 (FIG. 13). ).

FIG. 3 is a configuration diagram of a control unit including an operation panel. This unit includes a DC power supply circuit 20 that rectifies a 100 V AC power supply and supplies it as a DC voltage to the jack 3, a motor 10 that rotationally drives the rotating shaft 2, a cooling fan 9 that air-cools the high-frequency generation source 7, A transformer 21 for supplying power to the generator 7 is connected in parallel with the AC input.

The relay contact L is connected in series with the transformer 21.
1, a relay contact L2 is connected in series with the cooling fan 9, and a relay contact L3 is connected in series with the motor 10. Further, a relay contact L4 is connected between the DC power supply circuit 20 and the hot terminal of the jack 3, and a resistor Ri is connected between the ground side of the DC power supply circuit 20 and the ground terminal of the jack 3.

A main switch SW is provided between the DC power supply circuit 20 and the motor 10. If the main switch SW is not closed, the AC power is not supplied to the motor 10, the cooling fan 9 and the high frequency generation source 7 even if the relay contacts L1 to L3 are closed.

The relay contacts L1 to L4 are controlled to open and close by drive circuits T1 to T4 driven by a control circuit 22 having a microcomputer configuration. The control circuit 22 has a built-in program memory pre-programmed to execute the control specified by the operation panel 23. Further, the control circuit 22 determines the terminal voltage of the resistor Ri, the gas sensor 5
In order to detect the terminal voltage and the output level of the humidity sensor 6, their outputs are connected. Humidity sensor 6
Amplifies the voltage of the bridge circuit 6a by the amplifier 6b and supplies it to the control circuit 22 as an output signal.

FIG. 4 shows an example of the operation panel 23. The operation panel 23 includes a display unit 23a for visually displaying a cooking time, a cooking menu, and the like, a plurality of operation keys 23b for selecting various cooking menus, and a plurality of operation keys 23c for selecting an ionic water preparation function. And a start key 23d for instructing the start of the operation. The start key 23d is installed on the front of the range housing adjacent to the heating chamber 1.

The operation keys 23c are provided with a plurality of operation keys so that a plurality of types of ion water can be selected in accordance with the purpose of use of the generated ion water. In this embodiment, it is for coffee, rice cooking, beverages, stew, and confectionery. FIG.
Table 2 shows the type of ionized water and the optimum pH value. According to this table, the optimum value is pH 9 for coffee water, pH 11 for rice cooking water, pH 10 for drinking water, pH 12 for boiling water, and pH 10 for confectionery water.

Next, the operation of this embodiment will be described.
In this embodiment, in order to use the ionic water conditioning function,
The inner container 15 is stored in the container body 12 of the cooking container 11,
The container body 12 and the inner container 15 are filled with water, and the lid 13 is covered. The cooking container 11 is stored in the heating chamber 1, and the plug 17 is inserted.
To the jack 3.

In this state, the ionic water generating function of the operation key 23b is selected, and then one of the operation keys 23c is turned on to select ionic water having a desired pH value.
When 3d is turned on, the control circuit 22 drives the drive circuit T4 to close the relay contact L4, and supplies a DC voltage from the DC power supply circuit 20 to the electrode plate 14.

[0036] As a result, the periphery of the positive electrode plates 14a, hydroxide ions OH ^- are giving electrons to positive electrode plate 14a molecular oxygen O _2, and the so escaping into the air hydrogen ions H
⁺ Increases and the water becomes acidic. On the other hand, the negative electrode plate 14b
In the vicinity of, hydrogen ions H ⁺ deprive the electrons from the negative electrode plate 14b to become hydrogen molecules H ₂ and escape into the air, so that hydroxide ions OH ⁻ increase and the water becomes alkaline.
This is represented by the following chemical formula. Positive electrode plate 14a: 4H ⁺ + 4e ⁻ → 2H ₂ Negative electrode plate 14b: 4OH ⁻ → O ₂ + 2H ₂ O + 4e ⁻

When the electrolysis of water is performed in this manner, the pH value increases with the passage of current to the electrode plate 14 as shown in the graph of FIG. For example, the operation key 23c
If the water for coffee is selected in the above, since the optimum pH value of the water for coffee is 9, the energizing time is 4 from this graph.
Minutes.

However, if the control is simply performed only by the energizing time, the pH of the generated ionic water may be different due to a difference in water quality or water temperature. Therefore, the concentration of the hydrogen gas H ₂ generated guess pH value while detecting the gas sensor 5, so as to control the energization time.
FIG. 7 shows the relationship between the output level of the gas sensor 5 and the pH value.

As the gas sensor 5, a gas sensor conventionally used for detecting the finish of heating of food is used.
This gas sensor reacts to alcohol or water vapor for detecting the finish of food, but since it has no selectivity, a gas sensor that reacts to alcohol also reacts to a reducing gas such as hydrogen gas or carbon monoxide.

However, the output level of the gas sensor 5 varies depending on the sensitivity of each sensor. A sensor with good sensitivity starts up quickly and the output level of the hydrogen gas H ₂ does not reach the optimum pH value. Has reached the specified value, and conversely, the sensor whose sensitivity is low does not rise in output level even though the generation amount of hydrogen gas H ₂ has reached the optimum pH value, and the optimum pH value cannot be obtained respectively. Sometimes.

Therefore, in this embodiment, the current value flowing through the resistor Ri together with the output level of the gas sensor 5, that is, the resistor R
The energizing time is controlled by detecting the terminal voltage of i. That is, when it is detected that the output level of the gas sensor 5 has reached the specified value (FIG. 7), the relay contact L4 is turned off after the set energization time has elapsed, and before the output level of the gas sensor 5 reaches the specified value. When the preset time limit is reached, the relay contact L4 is forcibly turned off, and the power supply to the electrode plate 14 is stopped.

Next, the cooling fan 9 is rotated, and the gas filled in the heating chamber 1 is discharged from the exhaust port 4 to ensure safety. This is because the conventional ionized water conditioner is a single product, and the generated gas could be immediately released to the atmosphere. However, the present invention is to generate ionized water in the heating chamber 1 of a closed microwave oven. This is because the heating chamber 1 may be filled with gas and explode for some reason. When the electrolysis of water is completed in this way, the acidic ionized water is
The alkaline ionized water having the pH value selected by the operation key 23c is generated outside the inner container 15.

Note that depending on the type of ion water to be generated, heated water may be used instead of room temperature water.
For example, when making black tea, heating is performed after the generation of ionized water. However, before the pH value reaches an optimum value, the water boils and spills out of the cooking vessel 11 or the electrode plate 14 is melted by heating. In some cases, the reliability of the electrode material may be impaired due to the increase in the resistance.

Therefore, in such a case, the amount of water vapor generated when the water is heated is measured by the humidity sensor 6, and
Before the water boils, the relay circuit L4 is controlled by the control circuit 22.
To turn it off. This is because it is easier to use boiled water such as vegetable boiled water or noodle boiled water, which is the use of acidic ionized water, so it is better to control the temperature of water with the humidity sensor 6 in the same manner. High safety and high efficiency.

Next, the operation when the user mishandles the microwave oven will be described. First, the cooking container 11
The case where there is no water inside will be described. If the water is normal, the current flowing through the resistor Ri is about 60 mA,
The terminal voltage of the resistor Ri is “Ri × 60 V”.

However, if there is no water in the container, the electrode plate 14
Since there is no conductor between a and 14b, no current flows and the voltage across the resistor Ri becomes 0V. In this case, since no hydrogen gas is generated, if the voltage across the resistor Ri is 0 V or the terminal voltage of the gas sensor 5 does not change even if the power is supplied for a certain period of time, it is determined that there is no water and the relay is forcibly performed. The power supply is stopped by turning off the contact L4 and the operation panel 23
An error is displayed on the display section 23a, and a warning sound is generated.
The same applies when the plug 17 is not connected to the jack 3.

When a broth or the like containing a seasoning such as soy sauce or salt is placed in the cooking container 11, the current flowing through the resistor Ri increases. The control circuit 22 detects this, displays an error on the display unit 23a of the operation panel 23, and generates a warning sound.

As described above, the value of the current flowing through the resistor Ri changes depending on the temperature, the amount of water or the purity of the water in the cooking vessel 11, and the higher the purity, the smaller the current value, and the lower the purity, the larger the current value. In the case of water having a high purity and a low flow of current, the ionization is slow, so that the control circuit 22 controls the relay contact L4 so as to lengthen the energization time.

When the amount of water in the cooking vessel 11 is smaller than the specified amount, the current flowing through the resistor Ri is small even though the tap water contains some impurities.
The control circuit 22 may determine that the purity of the water is high, and may control so that the energization time becomes long. However, if the energization time is too long, the amount of water is small, so that ionization proceeds, and the pH value of alkaline ionized water and acidic ionized water becomes too large.

Therefore, the control circuit 22 turns off the relay contact L4 when a certain time limit elapses so that the energizing time does not extend indefinitely. That is, the control circuit 22 includes the resistor R
The energization time is set in inverse proportion to the value of the current flowing through i.
A time limit is set to prevent excessive generation of ions due to an incorrect amount of water.

FIG. 8 is a block diagram showing another embodiment of the control unit. In the configuration shown in FIG. 3, the DC power supply circuit 20 is additionally configured so as to obtain a high DC voltage by increasing the number of turns of the transformer. This high DC voltage is supplied to the jack 3 via the relay contact L5. Further, a drive circuit T5 is newly provided, and the control circuit 22 drives the drive circuit T5 to control opening and closing of the relay contact L5.

According to the present embodiment, as described above, when the purity of water is high and the energizing time must be extended, if it is too long, the convenience in use is lacking. The contact L5 is closed and the electrode plate 14 is closed.
By increasing the voltage value applied to the power supply, it is possible to avoid prolonging the energization time.

FIG. 9 is a block diagram showing another embodiment of the microwave oven according to the present invention. This embodiment has a configuration in which the jack 3b is provided outside the housing of the range in the configuration shown in FIG. The jack 3b is structurally the same as the jack 3, and is electrically connected in parallel with the jack 3 as shown in FIG. Other configurations are the same as those of the above-described microwave oven. The connector for taking out the DC voltage is not limited to the jack, but may be another connector.

According to the present embodiment, the cooking vessel 11 for preparing the ionized water can be placed outside the housing of the microwave oven. Therefore, normal cooking and heating is performed in the heating chamber 1 and the outside of the housing is performed. Ion water can be generated, and convenience for the user is increased. Since the electric power required for preparing the deionized water is about 1 to 2 W, the electric power for the range heating is 1000 to 1400.
Since it is very small compared to W, cooking heating and ion water preparation can be performed simultaneously. In this case, if one function is already started and the other function is selected, the other function can be started from that point.

Next, another embodiment of the microwave oven according to the present invention will be described. The present embodiment is an embodiment of a wireless system in which microwave energy from a high frequency generation source is received by an antenna provided in a cooking vessel and converted into a DC voltage. Therefore, in the present embodiment, as shown in FIG. 11, the DC power supply circuit 20 and the jack 3 are not required in the configuration of the control unit, so that the relay contact L4, the resistor Ri, and the drive circuit T4 are not required. Other configurations are described in FIG.
Is the same as that shown in FIG.

The configuration of the cooking container according to this embodiment is as follows.
As shown in FIG. 12, a shield case 30 made of stainless steel is attached to the back surface of the lid 13 so that a high-frequency signal does not leak. A circuit board 31 is housed in the shield case 30, and an antenna 32 attached to the circuit board 31 is attached. Is projected from the shield case 30 to the outside by a length of about ４λ. Microwave (2450 MH)
Since the electric field density of z) increases, a voltage is sufficiently induced even with a short line or substrate (pattern) of about 3 cm as the antenna 32.

A ferrite positive electrode 14a connected to the circuit board 31 is attached so as to hang from a hole in the center of the bottom surface of the shield case 30, and a pair of stainless steel negative electrodes 14b is provided on both sides of the shield case 30.
Are integrated with the shield case 30.

Then, as shown in FIG.
The height of b is configured to be slightly higher than the height of the positive electrode 14a (FIG. a) so that the lid 13 can be stably placed on a table or the like by itself. Further, if the tip of the negative electrode 14b is bent L (Fig. B), it can be placed more stably. This configuration corresponds to the configuration of the above-described embodiment (FIGS. 2 and 9).
This is a configuration that can also be applied to.

FIG. 14 is a circuit diagram of a rectifier circuit 31a formed on a circuit board 31. A voltage signal induced by an antenna 32 is rectified by a diode D through a voltage adjustment resistor R1, and a coil L , Capacitors C1 and C2,
The high-frequency component is removed by the low-pass filter including the resistors R2 and R3, and the electrode plate 14
a, 14b. If the DC voltage DC is small, a voltage doubler circuit may be added.

Next, the operation of this embodiment (FIGS. 11 to 14) will be described. In this embodiment, the cooking container 11 is connected to the heating chamber 1.
The operation key 23b is used to select the generation of ionized water, one of the operation keys 23c is turned on to specify the ionized water having a desired pH value, and the start key 23d is turned on. Then, the control circuit 22 drives the drive circuit T1 to close the relay contact L1, and supplies a voltage to the high frequency generation source 7 to generate a microwave.

The microwave generated from the high frequency generator 7 reaches the heating chamber 1 through the waveguide 8, and a part of the microwave is absorbed by the water in the container body 12 to raise the temperature of the water. Part is received by the antenna 32. The microwave received by the antenna 32 is converted into a DC voltage DC by the rectifier circuit 31a, applied to the electrode plates 14a and 14b, and used for electrolysis of water. At this time, since the temperature of the water in the container body 12 is increased by the microwave, the speed of ion generation is increased, and ion water can be generated quickly.

The drive circuit T1 is driven to drive the relay contact L
The time to close 1 is a time set in advance based on the pH value of the ionic water selected with the operation key 23c. In this embodiment, the energizing time cannot be controlled by the current value flowing through the resistor Ri, but the generated hydrogen gas H ₂
It is possible to estimate the pH value while detecting the concentration of the gas by the gas sensor 5 and control the energization time.

In this embodiment, since the lead wire 16 and the plug 17 are not required, the appearance of the lid 13 is not only smart and easy to handle, but also applicable to a conventional microwave oven. If you drive, it can be applied to any microwave oven. Further, the container main body 12 and the lid 13 can be commercialized independently as a cooking container for water preparation of ionized water.

FIG. 15 shows the cover 13 of the shield case 30.
The shield case 30 is detachably attached to the lid 13 with one touch by forming a keyhole-shaped hole 33 in the mounting surface on the side and inserting the hole 33 into a projection 34 protruding from the back surface of the lid 13. It is what was constituted. Other configurations are the same as those in FIG. According to the present embodiment, the shield case 30 and the DC electrodes 14a and 14b can be removed from the lid 13 and used as a normal cooking container.

[0065]

According to the present invention, it is possible to provide a microwave oven with a new function of water conditioning of ionized water, and it is possible to provide a microwave oven having further excellent multifunctionality. Moreover, according to the present invention, it is possible to automatically obtain ionized water having an optimum pH value according to cooking, and further to eliminate mishandling due to misuse or misoperation by a user,
By performing correct operation control and correct handling guidance, safety can be improved.

Also, according to the present invention, a connector for taking out a DC voltage is provided outside the housing, so that when the ion water is generated, if the external connector is used, the heating function and the ionic water conditioning function can be achieved. Can be used at the same time, so that the user can use the device effectively and save cooking time.

Further, if a wireless system that receives microwaves from a high frequency generation source and converts them into a DC voltage is used, the handling of the cooking container is simplified, and operability can be simplified. In addition, by integrating the shield case and the electrode plate, the structure is simplified, the cost and the manufacturing process are reduced, and the configuration is excellent in mass productivity. Furthermore, the operability when handling the lid alone is good, and if the electrode plate is removed from the lid, it can be used as a normal cooking container.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a microwave oven according to the present invention.

FIG. 2 is a configuration diagram of the cooking container shown in FIG.

FIG. 3 is a block diagram of a control unit of the microwave oven shown in FIG. 1;

FIG. 4 is an enlarged view of the operation panel shown in FIG.

FIG. 5 is a table showing types of ion water to be generated and optimum pH values.

FIG. 6 is a graph showing a relationship between an energizing time and a pH value.

FIG. 7 is a graph showing a relationship between a pH value and an output level of a gas sensor.

FIG. 8 is a part of a block diagram showing another embodiment of the control unit.

FIG. 9 is a configuration diagram showing another embodiment of the microwave oven according to the present invention.

10 is a block diagram showing a part of the control unit of the microwave oven shown in FIG.

FIG. 11 is a block diagram showing another embodiment of the control unit.

FIG. 12 is a configuration diagram showing another embodiment of a cooking container.

FIG. 13 is a configuration diagram of the electrode shown in FIG.

FIG. 14 is a circuit diagram of the rectifier circuit shown in FIG.

FIG. 15 is a configuration diagram showing still another embodiment of the cooking container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating room 2 Rotating shaft 3, 3b Jack 4 Exhaust port 5 Gas sensor 6 Humidity sensor 7 High frequency generation source 8 Waveguide 9 Cooling fan 10 Motor 11 Cooking container 12 Container body 13 Lid 14 Electrode plate 14a Positive electrode plate 14b Negative electrode Board 15 Inner container 16 Lead wire 17 Plug 20 DC power supply circuit 22 Control circuit 23 Operation panel 30 Shield case 31 Circuit board 32 Antenna 35 Hole 36 Projection Ri Resistance

Claims (11)

(57) [Claims] A container body in which an inner container is stored;
A cooking container comprising a lid placed on the upper surface of the container body and having a DC electrode attached to the back surface, a heating chamber for storing an object to be heated therein, and high-frequency generating means for irradiating the heating chamber with microwaves; A DC power supply that generates a DC voltage, a power supply terminal that is installed in the heating chamber and outputs a DC voltage from the DC power supply, a designation unit that designates a pH value of the generated ionic water, and a designation unit designated by the designation unit. a range housing comprising control means for controlling the duration of application of the DC voltage to obtain ionized water having a pH value, wherein the cooking vessel filled with water is placed in the heating chamber, and the DC electrode And the power supply terminal, and applying a DC voltage to the DC electrode while controlling the energization time by the control means to electrolyze the water, and using the inner container as a separation membrane in the cooking vessel. p specified by the constant means
The control unit generates ion water having an H value, and the control unit includes: the cooking container placed in the heating chamber.
When water is heated by the high-frequency generation means,
The condition of the water is monitored by sensor means, and the water boils.
A microwave oven characterized in that the energization is interrupted before the operation . 2. A container body containing an inner container therein,
A cooking container comprising a lid placed on the upper surface of the container body and having a DC electrode attached to the back surface, a heating chamber for storing an object to be heated therein, and high-frequency generating means for irradiating the heating chamber with microwaves; Of the cooking vessel
DC voltage supply means for supplying a DC voltage to the DC electrode, designation means for designating the pH value of the ionic water to be generated, and energizing time of the DC voltage for obtaining the ion water having the pH value designated by the designation means. and a range housing consisting of a control to the control means, the cooking container containing water therein to location placement into the heating chamber, applying a DC voltage to the DC electrode while controlling the energization time by pre-SL control means and the water was electrolyzed, when the inner container the cooking said generates ionized water pH values specified in the specifying means in the container as a separation membrane, to produce said ion water, before the said control means
The cooking is performed by energizing the high-frequency generation means.
A microwave oven characterized by warming water in a container . 3. A container body containing an inner container therein,
A cooking container comprising a rectifier circuit that receives a microwave on the back surface and is converted to a DC voltage, and a lid attached with a DC electrode to which the converted DC voltage is applied, which is placed on the upper surface of the container body, A heating chamber for accommodating an object to be heated, high-frequency generation means for irradiating the heating chamber with microwaves, designation means for designating the pH value of the generated ionic water, and ion water having a pH value designated by the designation means. A range housing comprising control means for controlling the energization time of the high-frequency generating means for obtaining the high-frequency generating means, wherein the cooking vessel filled with water is placed in the heating chamber, and the high-frequency generating means is controlled by the control means. By applying a direct current voltage to the direct current electrode to electrolyze the water, and using the inner container as a separation membrane in the cooking vessel at the pH value designated by the designation means. Microwave oven and generates a down water. 4. The control means detects the pH value designated by the designation means and a current value flowing from the DC power supply to the DC electrode to control the energization time to generate ionic water having the pH value. microwave oven according to claim 1 Symbol mounting, characterized in that. 5. The control unit determines that the detected current value is erroneous when the detected current value is a current value outside a preset range,
The microwave oven according to claim 4, wherein the energization is interrupted or a warning is issued. 6. The microwave oven according to claim 1, wherein the control unit switches the magnitude of a DC voltage applied to the DC electrode in order to shorten the energization time. 7. The DC electrode includes an electrode plate provided outside the lid and an electrode plate provided inside the lid, and the height of the electrode provided outside is set to the height of the inside electrode. The microwave oven according to any one of claims 1 to 3, wherein the height of the microwave oven is the same as or higher than the height of the electrode installed in the microwave oven. 8. An electrode plate installed outside the lid body,
The microwave oven according to claim 7, wherein the tip is bent in an L-shape. 9. The rectifier circuit according to claim 3, wherein the rectifier circuit has a structure covered by a shield case, and is formed integrally with a DC electrode plate provided outside the lid. microwave. 10. The control means monitors the state of the water by sensor means when water in the cooking vessel placed in the heating chamber is heated by the high-frequency generation means, and controls the water before the water boils. 4. The microwave oven according to claim 3 , wherein said energization is interrupted. Wherein said sensor means according to claim 1 or 10 microwave oven wherein it is a humidity sensor for detecting the amount of water vapor.