JP3198628B2 - Cordless equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cordless equipment used in ordinary households.

[0002]

2. Description of the Related Art Conventionally, devices such as coffee mills and jar pots, for example, all have a power cord and operate by receiving power supply of 100 V AC or the like from an outlet provided on a wall of a house or the like. .

FIG. 8 shows a coffee mill which is an example of such a conventional apparatus. Reference numeral 1 denotes a power cord, which draws 100 V AC power from an outlet and supplies the power to the motor 2. Reference numeral 3 denotes a switch operated by the user as necessary, and turns on / off the power supplied to the motor 2. 4 is a blade connected to the motor 2;
It rotates to break coffee beans.

FIG. 9 shows a jar pot. Reference numeral 5 denotes a power cord, which similarly draws 100 V AC power from an outlet and supplies the power from the power circuit 10 to each unit.
Reference numeral 6 denotes a tank for storing water. A heater 7 is provided on the bottom surface of the tank 6, and a thermistor 8 for detecting a temperature is provided at a lower portion of the tank 6. 9 is a control circuit, and the thermistor 6
Of the heater 7 is controlled by the detection signal of (1).
With the above configuration, the water in the tank 6 is heated and kept at a predetermined temperature.

[0005]

All of the above-mentioned conventional arrangements have a power cord for supplying electric power. For this reason, especially when using a device such as a coffee mill, the power cord 1 must be connected to the outlet each time, even after a short usage time, and the power cord 1 may be disconnected from the outlet after use. Necessary and very cumbersome. In addition, the presence of the power cord often hinders the design of the device. Further, thermal equipment such as a jar pot has a built-in heater and is heavy.

An object of the present invention is to solve the problems of the conventional configuration and to provide a lightweight cordless device which does not require a power cord. It is. In addition , providing the second, third, and fourth means for achieving the first object ,
The second, third, and fourth objectives .

[0007]

The first object of the present invention for achieving the first object is to provide a magnetic generator and a load, wherein the magnetic generator includes a top plate on which a load is placed, and a load. A primary coil provided under the top plate, an inverter that drives the primary coil, a receiving unit that receives a signal transmitted from the load, a first control unit that controls the inverter, and the load. A pan detection unit for detecting whether the pan is a pan, wherein the load unit is a secondary coil magnetically coupled to the primary coil, a storage unit for storing a type of device, and a control signal according to the content of the storage unit. A second control unit that sends the control signal to a transmission unit, a transmission circuit that transmits the control signal to a reception unit, and a load circuit that is supplied with power from the secondary coil. Predetermined signal When receiving, or when the pan detection means detects the presence of the pan on the top plate, it is an cordless device for controlling a high-frequency current flowing through the primary coil.

[0008] A second means of the present invention for achieving the second object has a plurality of load portions and a plurality of burner portions.
A magnetic generator, wherein the magnetic generator generates a high-frequency magnetic field.
Primary coil and the inverter that drives this primary coil.
And signals received from the plurality of load units.
Receiving means and first controlling means for controlling the inverter
And whether or not the load section is a pan, and the presence or absence of a pan
Pan detection means for generating a signal according to the plurality of
The load unit receives the magnetic field of the transmitting means and the primary coil and induces the magnetic field.
Detects the temperature of the metal heating part and the load part
Temperature detection means and the output from the temperature detection means.
Control means for generating a control signal and a second control means.
Transmitting means for transmitting a signal corresponding to these signals to the receiving means.
The second control means has a set specific code.
Then, a signal in which this specific code is superimposed on the control signal is generated,
The first control means is that the specific code transmitted from the load unit is normal.
Drive the inverter if it is
When the magnetism generator receives a predetermined signal from the load,
Or a cordless drive that drives the load when the load is a pan
Equipment.

According to a third means of the present invention for achieving the third object, the second control means intermittently activates the transmitting means.
The specified code is changed in accordance with the determined procedure at each start.
The control means also changes the internal code in the same
The high frequency current flowing through the primary coil is
Control that corresponds to the load specified by the
-Dress equipment.

According to a fourth aspect of the present invention for achieving the fourth object, the transmitting means transmits a control signal to the receiving means to drive the inverter for a fixed time, and the detecting means detects the temperature within the fixed time. If there is no change in temperature, the cordless device stops driving the inverter.

[0011]

The first means of the present invention operates as follows.
The storage unit provided in the load unit stores a device type signal indicating the type of the device. The transmission unit transmits the device type signal, and the reception unit provided in the magnetism generating unit receives the device type signal. Drives the primary coil in a form suitable for the device. The load section has a secondary coil that links with the high-frequency magnetic flux generated by the primary coil, and power is supplied to each section of the load by driving the secondary coil. That is, the load unit is driven by the magnetism generating unit without using the power cord.

The second means of the present invention is similar to the first means of the present invention, in that the magnetism generator acts to drive the load, and the load does not require a power cord. is there. In this means, it is assumed that equipment requiring heating is used as the load unit. In this case, since induction heating from the magnetic generation unit can be used, there is no need to provide a heater in the load unit, and the configuration of a small and light-weight equipment is required. realizable.

The third means of the present invention drives the transmission means provided in the load section intermittently while changing the specific code, and the control means of the magnetic generation section similarly changes the internal code with time. I'm waiting. For this reason, when a plurality of devices are used, there is no possibility that they will interfere with each other, and the device will function as a highly reliable device.

Further, the fourth means of the present invention functions as a safer device by stopping the drive of the inverter when the detected temperature of the temperature detecting means does not change for a certain period of time.

[0015]

The first real施例of EXAMPLES Hereinafter the present invention will be described with reference to FIG. Numeral 11 denotes a magnetism generating unit which drives the load unit 12. The magnetism generator 11 includes the following components. Reference numeral 13 denotes a ceramic top plate on which the load unit 12 is placed. Reference numeral 14 denotes a disk-shaped primary coil provided below the top plate 13. 15 is the load unit 12
Is a receiving means for receiving a coded radio wave transmitted by Reference numeral 16 denotes a pan detecting means for judging whether or not a pan exists on the top plate 13 based on the relationship between the voltage at both ends of the primary coil 14 and the power consumption. Reference numeral 17 denotes an inverter which receives signals from the receiving means 15 and the pan detecting means 16 and supplies a high frequency current of about 25 kHz to the primary coil 14 in accordance with these signals. 18 is the primary coil 14
And a cooling fan for escaping heat generated by power loss in the inverter 17 to the outside of the magnetic generation unit 11. Reference numeral 19 denotes a start switch operated by the user, and this signal is sent to first control means 20 for sending a control signal to the inverter 17. Reference numeral 21 denotes a power cord for supplying power to each part of the magnetism generating unit.

The load section 12 is a coffee mill in this embodiment. Reference numeral 22 denotes the load plate 12 for the top plate 1
3 is a secondary coil that is magnetically coupled to the primary coil 14 when placed on the secondary coil 3. Reference numeral 23 denotes a rectifying / smoothing circuit that converts the output of the secondary coil 20 into DC by rectifying / smoothing. Reference numeral 24 denotes a DC motor, which is supplied with electric power from the rectifying / smoothing circuit 23 and rotates. Reference numeral 25 denotes a blade fixed to the DC motor 24 for cutting coffee beans set by the user.
Smash. Reference numeral 26 denotes a push-button switch for opening and closing the motor 22 and its circuit.
Together with the load circuit 27. Reference numeral 28 denotes a storage unit that outputs device information indicating the type of the device stored therein, and 29 denotes a second control unit that receives an output of the storage unit 28 and outputs a control signal. Reference numeral 30 denotes a transmitting unit that receives an output of a control signal from the second control unit 29 and outputs a radio wave modulated by the control signal.

The operation of the embodiment will be described below. The user places the load unit 12 on the top plate 13,
When the start switch 19 is turned on, the device starts operating. The first control means 18 starts the inverter 17 in response to this signal. When the inverter 17 is started, the primary coil 14 is driven to generate a high-frequency magnetic field, and the load 1
A high-frequency voltage is induced in the second secondary coil 20. At the same time, the pan detecting means 16 operates to detect whether the load on the top plate 13 is a pan. When a pot is placed, that is, when the pot is used as the load unit 12, the inverter 17 continues to operate as it is, and the pot is induction-heated. When a load other than a pan is placed, the pan detection means outputs a pan-less signal to the inverter 17 that the pan is not placed after about 150 milliseconds.
When a coffee mill is used as the load unit 12 as in the present embodiment, the characteristic that the power consumption is small in spite of the large voltage of the secondary coil 20 as compared with the case where a pot is placed. Yes, the pan detecting means 16 determines that there is no pan. That is, the panless signal is output to the inverter 17 after 150 milliseconds. During this 150 milliseconds, load unit 1
2 operates as follows.

As described above, a high-frequency voltage is induced in the secondary coil 20. The rectifying / smoothing circuit 21 rectifies the high-frequency voltage, and stores the storing means 28, the second control means 29,
Power is supplied to the transmission means 25. Therefore, these units start operating, and the storage unit 28 outputs device information indicating the type of the device stored therein to the second control unit 29. The second control means 29 creates a signal corresponding to the device information signal and sends it to the transmission means 30. Thus, the transmitting means 30 outputs a signal including the device information as a radio wave. This radio wave is received by the receiving means 15 of the magnetism generator 11 and sent to the first control means 18. The first control means 18 detects that the load unit 12 is a coffee mill by comparing a predetermined device type signal with this signal.

Next, the control conditions of the inverter 17 are changed in a form suitable for the coffee mill according to a preset program. Thus, the inverter 17 continues to operate, and the primary coil 14 continues to generate a high-frequency magnetic field. Once in such a state, the inverter 17 and the receiving means 15 of the magnetic generator 11 and the rectifying and smoothing circuit 21 of the load 12
The transmitting means 30 continues to operate. At this time, if the receiving unit 15 does not receive a signal including device information within the 150 milliseconds, the operation of the inverter 17 is stopped.

When the user presses the switch 26 provided on the load section 12 in this state, the load circuit 27 is closed, and the output of the rectifying / smoothing circuit 23 is applied to the DC motor 24. Therefore, the DC motor 24 starts rotating, and the blade 25 also starts rotating at the same time. In this way, the coffee mill, which is the load section 12, can grind coffee beans.

As described above, according to the present embodiment, the load 1
2 itself does not have a power cord,
1 can be operated.

In this embodiment, the load circuit 27 is constituted by the DC motor 24. However, the load circuit 27 is not limited to the DC motor, but may be one that emits sound, vibration, and light. .

When nothing is placed on the top plate 13, the inverter 17 operates and stops for the time of about 150 milliseconds. At this time, in the present embodiment, three seconds after the inverter 17 is stopped, in order to be able to start the operation even when the pot is placed as the load unit 12 after the elapse of the time of 150 milliseconds. At the instant, the starting signal is again applied from the pan detecting means 16 to the inverter 17. That is, at this point, the high-frequency current is supplied to the primary coil 14 momentarily. At this time, if a pot is placed,
6 outputs a signal indicating “there is a pot” to the inverter 17. Therefore, according to this embodiment, heating starts at least three seconds after the pot is placed.

Similarly, when a coffee mill is placed as the load section 12 after a lapse of 150 milliseconds,
The operation starts within at least 3 seconds as described above. That is, the high frequency current is supplied from the inverter 17 to the primary coil 14 by the action of the pan detecting means 16, and the secondary coil 20 provided in the load section 12 induces a high frequency voltage. Therefore, power is supplied from the rectifying / smoothing circuit 21 to the storage unit 28, the second control unit 29, and the transmission unit 30.
Transmits a signal including the device type signal as a radio wave. The receiving means 15 receives this signal, and the first control means 18 drives the inverter 17 in a form corresponding to the device type signal. That is, the device operates normally.

If there is no state on the magnetism generating unit 11, it stops after about 150 milliseconds, and again after 3 seconds, the inverter 17 is restarted by the signal from the pan detecting means 16, so that the result is as follows. The high frequency current is supplied to the primary coil 14 intermittently.

When a small metal object such as a knife or a fork is placed on the magnetic generating unit, the receiving means 15
, No signal is received, and the output of the pan detecting means 16 becomes “no pan”.
To be supplied with a high-frequency current. However, in this state, the heating power of the small metal object is small,
Even if the user touches the hand, there will be no burns.

In this embodiment, the power supply for the transmission means 30, the second control means 29, the storage means 28 and the load circuit 27 is supplied from one secondary coil 22. If the current values are different, a plurality of secondary coils may be provided and supplied separately.

[0028] Next, a second real施例of the present invention will be described with reference to FIG. The magnetism generator 35 has the following elements. The receiving means 36 receives the radio wave from the transmitting means 41, demodulates the control signal, and outputs the output to the first control means 3
Send to 7. The first control means 37 varies the output of the inverter 38 according to the content of the control signal. A primary coil 39 is driven by the inverter 38 and generates a high-frequency magnetic field. 40 is a start switch. Top plate 13, pan detection means 16, cooling fan 18,
The power cord 19 is the same as in the above embodiment.

The load section 41 is assumed to be a jar pot in this embodiment, and has the following elements. Reference numeral 42 denotes a transmitting unit that transmits a radio signal in accordance with an instruction from the second control unit 43. Reference numeral 44 denotes a heating section made of stainless steel which is induction-heated by a high-frequency magnetic field generated by the primary coil 39 of the magnetic generation section 35. Reference numeral 45 denotes a secondary coil linked to the primary coil 39, which supplies power to the rectifying / smoothing circuit 46, storage means 47 for outputting device information stored therein, and second control means 43 and transmission means 42. ing. Reference numeral 48 denotes a tapping knob operated by a user. Reference numeral 49 denotes a hot water outlet from which hot water stored is discharged. 50 is a temperature detecting means for detecting the temperature of the stored water. The second control unit 43 stores the output of the temperature detection unit 50 and the storage unit 4
7 generates a control signal corresponding to the output of the control signal 7. That is, when a temperature signal of the temperature of the temperature detecting means 50 is received, a control signal is generated by performing arithmetic processing with a control optimum condition designed in advance, and the control signal output from the storage means 47 is used as the control signal. The signal is superimposed.

In this embodiment, a large-capacity storage device such as an electric double layer capacitor is used as the rectifying / smoothing circuit 46. Therefore, approximately 1
Even when a high-frequency magnetic field is applied for a short period of time, such as about 50 milliseconds, the battery is charged within that period, and power can be continuously supplied to the transmitting means 42 and the second control means 43 for at least 10 seconds thereafter. . When the tapping knob 48 is operated by the user, the internal pump is driven,
The hot water inside is drawn out from the tap hole 49.

The operation of this embodiment will be described below. When the user places the load portion 41 on the top plate 13 and turns on the start switch 40, the device starts driving. That is, the first control means 37 controls the start switch 4
Upon receiving the signal of 0, the inverter 38 is started. When the start is started, the pan detecting means 16 detects whether the load on the top plate 13 is a pan. The load section 41 of the present embodiment is a jar pot, and the diameter of the stainless steel heating section 44 is considerably large.
It will make a decision of "there is a pot". The heating section 44
Is small, or when the heat generating section 44 is provided at a position distant from the primary coil 39, the pan detecting means 16 determines "no pan".
When it is determined that “there is a pot”, the inverter 38 continues to operate as it is, and the load unit 41 is induction-heated. If it is determined that the pan is absent, the pan detector outputs a pan-less signal to the inverter 38 that the pan is not placed after about 150 milliseconds.

During the period of about 150 milliseconds, the following operation is performed. As a result, regardless of the output of the pan detecting means 16, the inverter 38 responds to the control output of the first control means 37. The supplied high frequency current is supplied to the primary coil 39. That is, since the inverter 38 is activated, a high-frequency magnetic field is generated from the primary coil 39, and a high-frequency voltage is generated between both terminals of the secondary coil 45 provided in the load unit 41. This high-frequency voltage is rectified by the rectification and smoothing circuit 46 and supplies power to the second control means 43 and the transmission means 42. Therefore, the second control means 43 and the transmission means 42 start operating. If the water temperature detected by the temperature detection unit 50 is lower than the target temperature set in the second control unit 43, the second control unit 43 issues a control request to send a large drive power to the inverter 38, Storage means 47
Is output together with the device type signal output by the. The transmitting means 42 receiving this control request transmits this signal as a radio wave.

When the receiving means 36 receives this radio wave, it demodulates this signal and transmits this demodulated signal to the first control means 37. The first control means 37 decodes this signal to increase the output of the inverter 38. Therefore, the primary coil 3
The high-frequency magnetic field generated by 9 increases and rapidly heats the stored water. As the water temperature approaches the target temperature, the output voltage of the temperature detecting means 50 increases, and the second control means 43 outputs a control request to reduce the driving power of the inverter 38. When the temperature finally reaches the target temperature, the second control means 43 outputs a control request to make the output of the inverter 38 zero.

As a result, once every three seconds, for 150 milliseconds,
The operation shifts to an operation of operating the inverter 38 intermittently. Here, during the stop period of the inverter 38, the high frequency magnetic field is not supplied to the primary coil 39, and the output of the secondary coil 45 becomes zero if the induction heating of the heat generating part 44 is not performed. However, in this embodiment, the rectifying / smoothing circuit 46 has a built-in large-capacity electric storage device, and the supply of power to the transmission means 42 and the second control means 43 is continued even during the suspension period. Therefore, the second control means 43 and the transmission means 42 continue to operate.

Since the large-capacity storage device is charged by intermittently driving the primary coil 39 as described above, the large-capacity storage device can always hold a voltage equal to or higher than a certain value.
Note that the induction heating power is also intermittently supplied to the heat generating section 44, and the magnitude of the average power supplied at this time is required in this embodiment to maintain the temperature of the stored water. It is designed to be less than the calorific value. Therefore, the water temperature gradually decreases, and eventually the temperature detecting means 50 detects a temperature lower than the target temperature. Upon receiving such information from the temperature detecting means 50, the second control means 43 outputs a control request for slightly driving the inverter 38. When the transmitting means 42 transmits this signal and the receiving means 36 receives this radio signal, the inverter 38
Acts slightly to raise the temperature of the water stored in the load unit 41. Hereinafter, such an operation is repeated, and the temperature of the water stored in the load unit 41 is kept substantially constant.

As described above, according to the present embodiment, as in the first embodiment of the present invention, the magnetism generating unit 35 is connected to the load unit 4.
1 to operate. Therefore, it is not necessary to provide a power cord in the load unit 41 as in the above embodiment. In this embodiment, a jar pot is assumed as the load unit 41. In this case, since induction heating from the magnetism generating unit 35 can be used, it is not necessary to provide a heater in the load unit 41, and the configuration of a small and lightweight device Can be realized.

[0037] Next, a third real施例of the present invention will be described with reference to FIG. The cordless device according to the present embodiment includes a plurality of magnetism generating units and a plurality of load units. FIG.
The configuration shown by means a pair of the plurality of combinations. Hereinafter, elements having the same functions as those of the above-described embodiment will be denoted by the same reference numerals and will not be described.

In the present embodiment, the load section 51 is assumed to be a jar pot, and includes the same means as in the above-described embodiment. Reference numeral 52 denotes second control means, which has a specific code indicating the number of times that the load unit 51 has communicated with the magnetism generating unit 61. This specific code is always initialized to 0 at the time of the first communication with the magnetic generator 61. That is, the second control means 52 of this embodiment sends the specific code and a signal corresponding to the output of the temperature detection means 50 to the transmission means 42. The transmitting means 42 outputs this signal as a radio wave.

The magnetism generating unit 61 includes a storage unit 62 for temporarily storing a specific code indicating the type of the device transmitted by the load unit 51. 63 is a first control means which operates as follows. First, when the start switch 40 is operated, the inverter 38 is activated. Secondly, upon receiving a signal indicating the specific code of the radio signal transmitted by the transmitting unit 42 of the load unit 51 and determining that the load unit 51 is a load to be controlled without fail, the inverter 38 is driven. continue. Third, the load 5
If it is determined that 1 is not the load to be controlled, the drive of the inverter 38 is stopped.

The operation of this embodiment will be described below. The load unit 51 which is one of the plurality of loads is connected to the top plate 13 of the magnetic generation unit 61 which is one of the plurality of magnetic generation units.
When the user operates the start switch 40 on the device, the device starts driving. That is, first, the first control means 63 detects that the start switch 40 has been operated, and starts the inverter 38. Inverter 3
When 8 is started, the primary coil 39 generates a high-frequency magnetic field, and the load unit 51 is driven. At the same time, the pan detecting means 16 makes a judgment of "there is a pan". Even when it is determined that "there is no pot", the inverter 38 continues to operate for the same reason as in the above embodiment. Hereinafter, a case where it is determined that “there is a pot” will be described.

The high-frequency magnetic field generated from the primary coil 39 is linked with the secondary coil 45, and a high-frequency voltage is generated between both terminals of the secondary coil 45. The rectifying and smoothing circuit 46 rectifies and smoothes the high-frequency voltage and supplies power to the second control means 52 and the transmitting means 42. Thus, the second control means 52
The transmitting means 42 starts operating. Second control means 52
First initializes a specific code to 0. Next, for the second communication with the magnetism generating unit 61, for example, a control signal corresponding to the detected temperature signal of the temperature detecting means 50 is generated by adding a specific code of 2 to the control signal. The transmitting means 42 transmits this signal as a radio signal. The receiving means 36 provided in the magnetism generator 61 receives this signal and transmits it to the first control means 63. The first control unit 63 confirms that the specific code stored in the storage unit 62 at this time is 1, and recognizes that the load unit 51 currently controlled is definitely a device to be controlled. Then, the inverter 38 is appropriately controlled. Thereafter, each time transmission from the load unit 51 is performed, the first control unit 63 increases the specific code stored in the storage unit 62 by one, and recognizes that this communication is definitely a device to be controlled. Thus, the inverter 38 is appropriately controlled.

In this way, the temperature of the water stored in the load section 51 is heated to a predetermined temperature and kept. When the water temperature reaches the target temperature and enters the heat retention state, the second control means 52 outputs a control request to make the driving of the inverter 38 zero. Thus, the inverter 38 shifts to the intermittent operation for 150 milliseconds once every three seconds. Even during the stop period of the inverter 38 during the intermittent operation, the power supply to the transmission means 42 and the second control means 52 is performed by the operation of the large-capacity storage device built in the rectifying / smoothing circuit 46 as in the above-described embodiment. Then, the load unit 51 can continue the operation.
Further, the temperature of the water stored in the load unit 51 gradually decreases,
When the output of the temperature detecting means 50 becomes lower than the target temperature, the second controlling means 52 gives the transmitting means 42 a predetermined specific code again and outputs a control request for slightly driving the inverter 38. Thus, the temperature of the water stored in the load unit 51 is maintained at the target temperature.

Next, the user removes the load unit 51,
A case where the second load unit is erroneously mounted on the magnetic generation unit 61 will be described. In this case, since the magnetism generating unit 61 operates intermittently once every three seconds for 150 milliseconds, the second load unit is once activated. When the second load unit is started, the second control unit 52 first initializes a specific code owned by itself, as described above. Therefore, the communication from the second load unit to the magnetic generation unit 61 is performed by the first load unit 5.
It starts with a number smaller than the specific code used in communication from 1. That is, since the magnetism generating unit 61 has already stored the specific code of the load unit 51 in the storage unit 62, the signal from the second load unit is ignored. In this case, when the user places the second load unit on the magnetic generation unit 61,
When the start switch 40 is operated again, the load 5
It operates normally as in the case of 1.

For example, the load unit 51 is temporarily connected to the magnetic generation unit 61.
In this case, the normal operation is continued again because the specific codes match with each other.

The load 51 is continuously mounted on the magnetic generator 61, and a second load is newly mounted on the second magnetic generator. When the start switch 40 of the generating unit is operated, communication from the second load unit is performed to both the magnetic generating unit 61 and the second magnetic generating unit. In this case, the communication with the magnetism generating unit 61 is ignored because the specific codes do not match, and only the second magnetism generating unit operates.

As described above, the present embodiment can provide an apparatus in which two pairs of adjacent load units and magnetic generation units can operate without affecting each other by using the specific code indicating the number of times of load communication. Things.

[0047] Next a fourth actual施例of the present invention will be described with reference to FIG. This embodiment, the one in which has a third real施例further improved structure of the present invention.

The first load section 71 is assumed to be a jar pot in this embodiment, and includes a transmitting means 42, a heating section 44 made of stainless steel, a secondary coil 45, a rectifying and smoothing circuit 46, a tapping knob 48, and a taphole 49. -It has the temperature detecting means 50 and the second control means 72. The second control means 72 has a specific code indicating the number of times of communication with the magnetism generating unit 75 as in the above embodiment, and changes the specific code based on a preset procedure. A signal is generated by superimposing a signal indicating this specific code on a control signal corresponding to the temperature information detected by the temperature detecting means 50. In addition, the magnetic generator 7
The fifth first control means 76 has a change procedure similar to the change procedure of the specific code which the second control means 72 has.

The configuration of the second load unit (not shown) is basically the same as that of the first load unit 71, except for the second control means provided in the second load unit. This is a procedure for determining a specific code generated in the step 72.

The operation of this embodiment will be described below. First, a case where the load unit 71 is placed on the magnetism generating unit 75 and operated is described.

When the start switch 40 is operated, the magnetic generator 75 starts driving, and the secondary coil 45 of the load 71 is
Is driven, the second control means 72 first initializes the specific code and sends it to the transmission means 42. Next, temperature detecting means 5
The required control content is determined by looking at the detected temperature information of 0, and a specific code according to the determined procedure is superimposed on a signal indicating the control content and transmitted to the transmitting means 42. This radio signal emitted by the transmitting means 42 is received by the receiving means 36 of the magnetism generator 75. The first control means 76 stores the initialization signal of the specific code received first in the storage means 77.

Thereafter, both the second control means 72 and the first control means 76 change the specific code in the same procedure. For example, if the second control means 72 initializes the specific code to 0, the storage means 77 stores 0. If the procedure for changing the specific code is a promise to increase the code one by one from the next transmission, the second control means 7
The next specific code at which 2 occurs is 1. The first control unit 76 also determines that the next received signal is 1 obtained by adding 1 to the specific code 0 currently stored in the storage unit 77, and changes the specific code of the storage unit 77 to this 1. Thus, each time a new signal is received, the first control unit 76 of the magnetism generating unit 75 compares the specific code of this signal with the code stored in the storage unit 77. Thus, the control signal is output to the inverter 38 only when the specific codes match.

Thus, the inverter 38 is connected to the primary coil 6
1 controls the high-frequency current flowing through the circuit 1. That is, the load 71
When the temperature of the stored water is sufficiently lower than the set target temperature, the first control unit 76 outputs to the inverter 38 to send a large driving power. As the temperature of the stored water approaches the target temperature, the second control means 72 outputs a control request to reduce the drive power of the inverter 38. When the target temperature is reached, the second control means 72 outputs a control request to make the driving of the inverter 38 zero. Thus, once every three seconds, as in the previous embodiment,
The operation shifts to a warming operation in which the inverter 38 is intermittently operated for 150 milliseconds. In this case, similar to the above embodiment,
Since the rectifying / smoothing circuit 46 has a built-in large-capacity battery, the second control circuit 72 and the transmitting means 42 continue to operate even during the suspension period.

When the temperature of the water stored in the load section 71 gradually decreases and the temperature detecting means 50 detects a temperature lower than the target temperature, the second control circuit 72 again sends the transmitting means 42.
Then, a signal in which a signal indicating a predetermined specific code is superimposed on a control request for slightly driving the inverter 38 is output. Receiving means 36 receives this radio signal and outputs the signal
Is activated to compensate for a decrease in the temperature of the water stored in the load unit 71. Hereinafter, by repeating such an operation, the temperature of the water stored in the load unit 71 is always kept at a substantially constant value.

Next, a case where the user puts the second load unit (not shown) on the second magnetism generating unit and turns on the start switch while the load unit 71 is operating will be described.

In this case, when the second load section starts operating similarly to the above-described operation, the second control means 72 of the second load section initializes its own specific code.
The transmitting means 42 transmits this signal as a radio wave. This radio wave is received by the magnetism generator 75 and a second magnetism generator (not shown). However, since the magnetism generating unit 75 has already communicated with the load unit 71 several times and the storage unit 77 stores specific codes having some values, the signal from the second load unit is transmitted. ignore. The storage unit 77 of the second magnetic generation unit stores the specific code as 0 by the first communication from the second load unit, and increases the value by 1 each time communication is performed as described above. Go.

As described above, according to the present embodiment, since the load section and the magnetism generating section have a common procedure of changing the specific code, the third embodiment of the present invention is further improved. It can communicate with high reliability.

[0058] Next, a fifth real施例of the present invention will be described with reference to FIG. Hereinafter, the same components as those in the above-described embodiments are denoted by the same reference numerals, and the following description is omitted.

The load section 80 includes a transmitting means 42, a heating section 44 made of stainless steel, a secondary coil 45, a rectifying and smoothing circuit 46,
Hot water supply knob 48, hot water outlet 49, temperature detection means 50, storage means 81 for outputting a specific code indicating the number of times of communication stored therein, and a control signal corresponding to the output from temperature detection means 50, There is provided a second control means 82 for outputting a signal on which the stored information is superimposed.

The first control means 86 of the magnetism generator 85
Also has a function of calculating and grasping the temperature gradient from the transmission signal from the transmission means 42. Hereinafter, the operation of this embodiment will be described. The radio signal transmitted from the transmitting means 42 is received by the receiving means 36 of the magnetism generator 85. In the case of the combination of the load unit 80 and the magnetic generation unit 85 that have been correctly paired as in the above-described embodiment, the load unit 80 placed on the magnetic generation unit 85 is heated. In this embodiment, when a certain time has elapsed after the start of communication, the temperature detecting means 5
The output of 0 is monitored. That is, the temperature gradient at a predetermined time is checked. If the temperature gradient is equal to or less than a predetermined value, the magnetic generation unit 85 and the load unit 8
Upon determining that the pair of 0s is not correctly established, the first control means 86 immediately instructs the inverter 38 to stop. If the temperature gradient suddenly shows a constant or a drop during heating, it is determined that the load section 80 has been removed from the magnetism generating section 85, and the stop of the inverter 38 is similarly commanded.

As described above, according to the present embodiment, it is possible to detect an abnormality in pairing between the load unit and the magnetism generating unit and prevent abnormal operation or malfunction.

[0062] Next, a sixth real施例of the present invention will be described with reference to FIG. Hereinafter, the same elements as those of the above-described embodiment are denoted by the same reference numerals, and the following description is omitted.

The receiving means 36 receives the radio wave from the transmitting means 42, demodulates the control signal, and sends its output to the first control means 87. The first control means 87 has a timer means for counting time therein, and varies or stops the output of the inverter 38 based on the contents of the control signal and monitoring of the internal timer.

The load section 90 includes a transmitting means 42, a heating section 44 made of stainless steel, a secondary coil 45, a rectifying and smoothing circuit 46,
A tap control 48, a tap 49, a temperature detecting means 50, and a second control means 91 for outputting a control signal based on an output from the temperature detecting means 50 are provided. Second control means 91
Is connected to the temperature detecting means 50, outputs a control signal at regular time intervals by performing arithmetic processing with preset optimum conditions, etc., according to the temperature of the temperature detecting means 50. The control signal is output as radio waves.

The operation of this embodiment will be described below. The operation in the general heating / heating step is the same as that in each of the above embodiments, and the description is omitted.

The first control means 87 of the magnetism generating unit 88
It has timer means for timekeeping and a timer monitoring function inside. That is, when the timer means measures a specified time or more, the drive of the inverter 38 is stopped. The time measurement by the timer means is performed by the load unit 9.
It is initialized every time a signal from 0 is received. With such a configuration, the drive of the inverter 38 can be stopped when a signal cannot be received from the load unit 90 for some reason.

As described above, in this embodiment, even if the load unit 90 is separated from the magnetism generating unit for some reason and communication between them is interrupted, abnormal operation or malfunction of the device can be prevented.

[0068] Next, a seventh actual施例of the present invention will be described with reference to FIG. The same components as those of the above embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

In the present embodiment, the second control means 101 of the load section 100 has operation detecting means 101a for detecting that the tapping knob 48 has been operated, and when the user operates the tapping knob 48, The second control means 101 transmits this signal from the transmission means 42 as a radio signal.

The operation of this embodiment will be described below. The operation in the general heating / heating step is the same as that in each of the above embodiments, and the description is omitted. The user has a hot water knob 4
When the stored water is taken out from the tap hole 49 by operating the tap 8, the operation of a pump (not shown) connected to the tap knob 48 is required. In order for this pump to operate, the capacity of the capacitor built in the rectifying / smoothing circuit 46 alone is insufficient. Therefore, in this embodiment, when the user operates the tapping knob 48, the second control means 10
1 detects the user's operation via the operation detecting means 101a, and outputs a control signal for temporarily increasing the output of the inverter 38. This signal is transmitted by the transmitting means 4
2 to the receiving means 36, the first control means 87
Acts to temporarily increase the output of the inverter 38. Thereby, energy for driving the pump is obtained.

As described above, according to the present embodiment, it is possible to realize a cordless device that can respond even when the user operates the load unit.

[0072]

According to the first aspect of the present invention, there is provided a magnetic generator and a load, wherein the magnetic generator includes a top plate on which a load is placed, and a primary coil provided below the top plate. An inverter that drives the primary coil, a receiving unit that receives a signal transmitted from the load unit, a first control unit that controls the inverter, and a pan detection that detects whether the load is a pan. Means, the load unit magnetically couples with the primary coil, storage means for storing the type of device, and second control means for sending a control signal according to the content of the storage means to the transmission means. And a transmitting means for transmitting the control signal to a receiving means, and a load circuit supplied with power from the secondary coil, the inverter, when the receiving means receives a predetermined signal from the transmitting means,
Or, as a cordless device that controls the high-frequency current flowing through the primary coil when the pan detection means detects the presence of the pan on the top plate, a device that can be driven without a power cord simply by placing the device on the magnetic generator. Is what you can do.

The second means of the present invention comprises a plurality of load units,
A magnetic generator having a plurality of burners;
The generating unit includes a primary coil that generates a high-frequency magnetic field, and a primary coil.
An inverter that drives the next coil and the plurality of load units
Receiving means for receiving the signal transmitted from the
First control means for controlling, and whether the load unit is a pot
Pan detection that generates a signal according to the presence or absence of a pan
Means, wherein the plurality of load units include a transmitting means and the primary
A metal heating part that is induction heated by the magnetic field of the coil
Temperature detecting means for detecting the temperature of the load, and temperature detecting means
A second control for generating a control signal by means of an output from the means
Means and a signal corresponding to the signal from the second control means
Means for transmitting to the means, wherein the second control means
It has a set specific code, and this specific code is used as a control signal.
A superimposed signal is generated, and the first control means transmits the signal from the load unit.
Inverter if the specific code received is legitimate
So that the magnetism generating unit
Negative if a signal is received or if the load is a pan
Multiple magnets are generated as a cordless device that drives the load
Malfunction does not occur even when using a combination of the load section and the load section
It is something that can be done.

The third means of the present invention comprises a first control means
The specific code possessed by the second control means is replaced with a similar predetermined hand.
Multiple magnets can be generated
Malfunctions occur even when the combination of the
It can be a difficult device.

The fourth means of the present invention is that the transmitting means is a receiver.
Send a control signal to the stage to drive the inverter for a certain time,
There is no change in the temperature detected by the temperature detecting means within this fixed time.
If you want to stop the inverter drive,
It realizes a safe cordless device.

[Brief description of the drawings]

Sectional view of a cordless device is a first real施例Next Patent

2 is a cross-sectional view of a cordless device is a same second real施例

3 is a cross-sectional view of a cordless device is a same third real施例

Sectional view of a cordless device 4 is the same fourth actual施例

Figure 5 is a cross-sectional view of a cordless device is a same fifth real施例

6 is a cross-sectional view of a cordless equipment is the same sixth real施例

FIG. 7 is a cross-sectional view of a cordless equipment is the same seventh of the real施例

FIG. 8 is a sectional view of a coffee mill showing a conventional technique.

FIG. 9 is a sectional view of a jar showing a conventional technique.

[Explanation of symbols]

11.35.61.75.85.88 Magnetic generating part 12.41.51.71.80.90.100 Load part 13 Top plate 14.39 Primary coil 15.36 Receiving means 16 Pan detecting means 17.38 Inverter 22.45 Secondary coil 27 Load circuit 28.47.62.77.81 Storage means 29.43.52.72.82.91.101 Second control means 30.42 Transmission means 37.63.76.86 First control means 44 Heating section 50 Temperature detection means 101a Operation detection means

Continuation of the front page (72) Keiko Hata 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-59-35385 (JP, A) JP-A-62-198080 (JP) , A) JP-A-63-269485 (JP, A) JP-A-2-185298 (JP, A) JP-A-3-212299 (JP, A) JP-A-58-23199 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H05B 6/12 A47J 27/21 A47J 42/00

Claims (4)

(57) [Claims] 1. A magnetic generator comprising a magnetic plate and a load, wherein the magnetic plate includes a top plate on which a load is placed, a primary coil for generating a high-frequency magnetic field, an inverter for driving the primary coil, and a load. Receiving means for receiving the signal transmitted from the first, the first control means for controlling the inverter, and a pot detecting means for detecting whether the load unit is a pan, and generating a signal according to the presence or absence of the pan Having a secondary coil magnetically coupled to the primary coil, storage means for storing the type of device, and second control means for sending a control signal according to the content of the storage means to the transmission means, Transmitting means for transmitting the control signal to a receiving means, and a load circuit supplied with power from the secondary coil, wherein the magnetism generating unit receives a predetermined signal from the load unit, or if the load unit If the pot is the load Cordless device that drives the unit. 2. A magnetic generating unit having a plurality of load units and a plurality of burners, wherein the magnetic generating unit includes a primary coil for generating a high-frequency magnetic field, an inverter for driving the primary coil, Receiving means for receiving a signal transmitted from the load unit, first control means for controlling an inverter, and detecting whether the load unit is a pan, and generating a signal according to the presence or absence of the pan A plurality of load units, the plurality of load units including a transmission unit and a metal heating unit that is induction-heated by receiving a magnetic field of the primary coil; a temperature detection unit that detects a temperature of the load unit; A second control means for generating a control signal in accordance with an output from the first control means, and a transmission means for transmitting a signal corresponding to a signal from the second control means to a reception means, wherein the second control means has a specified identification. Sign, and this particular code Generating a signal that is superimposed on the control signal,
The first control means drives the inverter when the specific code transmitted from the load unit is a regular code,
A cordless device that drives the load unit when the magnetism generator receives a predetermined signal from the load unit or when the load unit is a pot. 3. The cordless device according to claim 2, wherein the specific codes of the first control means and the second control means are changed in a similar predetermined procedure. 4. The transmitting means transmits a control signal to the receiving means to drive the inverter for a fixed time, and if the temperature detected by the temperature detecting means does not change within the fixed time, stops driving the inverter. Cordless equipment as described.