JPH084674B2 - Induction heating iron - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an induction heating iron used in ordinary households.

2. Description of the Related Art Recently, cordless irons have appeared on the market, but all of them can supply power only when the iron body is placed on the ironing stand, and the heat storage during the actual ironing work. It depends on. For this reason, the temperature of the base surface of the iron body immediately dropped after steaming for a certain period of time, and it was not a true cordless iron. Therefore, various proposals have been made for induction heating irons that can heat the iron body using induction heating even during actual ironing work.

This induction heating iron controls the temperature of the iron base (for example, 20
In the case of (holding at 0 degree), it is necessary to send some temperature information signal from the cordless iron body to the ironing board side having a heating coil for inductively heating the iron body. Because, if you try to keep the base temperature of the iron body at a predetermined temperature, the excitation of the heating coil in the ironing board is controlled based on whether the current temperature of the iron base is lower or higher than the predetermined value (is the same). It is necessary to do so.

FIG. 5 shows a conventional example of an induction heating type iron capable of adjusting the temperature of the iron base. In the figure, reference numeral 1 denotes an iron main body, which has a transmitting means capable of transmitting a signal to the outside by a radio wave and a control means for controlling the transmitting means, though not shown in the drawing. This control means transmits a heating request signal when the temperature of the iron base 3 is lower than the set temperature set by the temperature setting button 2, and stops the transmission signal in other cases. 2 is a temperature setting button for the user to set a desired temperature,
3 is an iron base, 4 is a handle, 5 is an iron work surface 7
It is a cover cloth that protects the body and can withstand temperatures up to 250 degrees. 6 is a felt for giving an appropriate cushion to the ironing work surface 7, and 7 is an ironing work surface on which clothes or the like are placed for ironing work. 8
Is supplied with high-frequency power from the heating coil control unit 9 (excited) to heat the iron body 1,
Is a heating coil control unit including therein receiving means for receiving a transmission signal from the iron body 1 and control means for controlling excitation of the heating coil 8 by the output of the receiving means, and the transmission signal is a heating request signal. For example, the heating coil is excited, and if there is no transmission signal, the excitation is stopped. However, even if it is a heating request signal, if the iron body 1 is not on the heating coil 8, the excitation is immediately stopped, and after a predetermined time elapses, the excitation is performed again. 10 is a leg portion, 11 is a case, 12 is a partition plate for preventing the steam from the iron body 1 from hitting the heating coil 8 and the heating coil control unit 9, and 13 is the force from the iron body 1 A steam suction fan for discharging the steam to the outside, 14 an exhaust duct for guiding the steam sucked by the steam suction fan 13 to the outside, and 15 a steam exhaust port. Reference numeral 16 denotes a switch for turning on and off the steam suction fan 13, which is used to turn on and off the steam suction fan. 17 is the power supply of the iron body 1,
It is an iron body power switch for cutting.

The operation will be described below with reference to FIG. First, the user turns on the power switch 17 of the iron body, sets the temperature to a desired temperature using the temperature setting button 2, and puts the clothes and the iron body 1 on the heating coil 8 on the iron work surface 7 (here Now assume that you wanted to steam.) In addition, it has a fan for steam suction and a switch
Set 16 to "Enter". At this time, if the temperature of the iron base 3 is lower than the set temperature, the iron body 1 sends a heating request signal. As a result, the heating coil controller 9
Excites the heating coil 8, and the iron base 3 of the iron body 1 is heated. When the temperature of the iron base 3 rises and reaches the set temperature, the transmission signal from the iron body 1 stops, so that the excitation of the heating coil 8 is stopped. After this, the user actually irons, but if the temperature of the iron base 3 falls below the set temperature during ironing, the iron body 1 again sends a heating request signal, and the iron body 1 heats the heating coil 8 Heated when on top. As a result, the temperature of the iron base 3 is kept substantially constant unless it is unnatural or specially used.

When finishing the ironing work, the iron main body power switch 17 is set to “OFF”, the steam suction fan is turned on, and the cut switch 16 is set to “OFF”.

However, in the above-described conventional example, since the signal transmitted from the iron body 1 is only the heating request signal, the heating coil control unit 9 has a problem that the state of the iron body 1 is unknown when there is no signal. there were. It can be considered that there is no signal from the iron body 1 in the following cases. That is, the iron body 1 is (1) currently in use (the temperature of the iron base 3 is higher than the set temperature), (2) the power is turned off, and (3) a place where radio waves cannot reach for some reason. Have been placed in.

In the cases of (2) and (3), the steam suction fan 13 continues to run unless a person stops it, which is a problem in terms of waste of electricity or safety.

The present invention solves such a problem, and an object of the present invention is to provide an induction heating iron that does not impair power consumption and safety.

Means for Solving the Problems Means of the present invention for achieving the above object comprises an ironing board having a heating coil, and an iron body that is induction-heated on the heating coil, and the ironing body is a transmitting means. Controlling the transmission signal of the transmission means to transmit a heating request signal when the base temperature of the iron body is lower than a predetermined value and a standby request signal when the base temperature of the iron body is equal to or higher than the predetermined value. The ironing board has a control means, and the ironing board has a receiving means for receiving a transmission signal from the transmitting means, a steam suction fan for sucking steam generated from the iron body, and the reception signal is a heating request signal. If so, the heating coil is excited, if the signal is a standby request signal, the excitation of the heating coil is stopped, and if there is no signal, the steam suction fan And an ironing board side control means for controlling so as to stop the operation.

Effect According to the present invention, since the transmission signal from the iron main body has two types, the heating request signal and the standby request signal, the ironing board side can surely determine whether the iron main body is currently in use. Therefore, the operation of the steam suction fan or the like on the ironing board side can be accurately performed.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 11 is an iron body, and 12 is a base temperature detecting means for detecting the temperature of the iron base, which is detected using a thermistor. 13 is a set temperature input means for the user to input the set temperature, using a push switch,
A LOW signal is output when the switch is pressed, and a HIGH signal is output when the switch is not pressed. Reference numeral 14 is a transmission means for detecting the outputs from the set temperature input means 13 and the base temperature detection means 12.
A microcomputer is used as the iron body side control means for controlling the set temperature display means 16 and the set temperature display means 16. The transmission means 15 uses the output signal from the iron main body 14 as it is as a transmission signal,
Transmit on a carrier wave of Hz. The set temperature display means 16 displays the set temperature corresponding to the operation of the set temperature input means 13, and is composed of four LEDs. Further, the iron body side control means 14 detects the output of the base temperature detection means 12,
When the base temperature is lower than the set temperature, a square wave with a cycle of 1 msec is output to the transmitting means 15, and when the base temperature is higher than (or the same as) the set temperature, a square wave with a cycle of 0.5 msec is output to the transmitting means 15. To do. Although not specifically shown in this drawing, the iron body 11 uses a primary battery as a power source,
The power switch that turns on and off the power is the iron body
It is provided in 11.

Reference numeral 17 is an ironing board, 18 is a heating coil located below the hanging surface of the ironing board 17 and excited by an inverter 19 to induction-heat the iron body 11, 19 is an inverter that supplies high-frequency power to the heating coil 18, and 20 is generated from the iron body 11. Fan for steam suction to forcibly discharge the steam to be used outside, 21 is a pilot lamp, 22 is the iron body
Receiving means for receiving the transmission signal from 11, 23 is receiving means 22
An ironing board side control means for controlling the inverter 19, the steam suction fan 20, and the pilot lamp 21 by receiving the output from the microcomputer, and the control is performed by the microcomputer.

The output of the receiving means 22 is shown in FIG. (1) of FIG. 2 is an output waveform when the transmission signal from the iron main body 11 is a heating request signal, and is a square wave with a period of 1 msec.
Similarly, (2) is an output waveform when the signal is a standby signal, which is a square wave with a period of 0.5 mSec. (3) shows the output waveform when there is no signal, which is always at the HIGH level. The microcomputer of the ironing board side control means 23 takes in the above output to the port and counts the LOW level. If the LOW continues for 0.25 msec, the standby request signal, if 0.5 msec continues, the heating request signal, and in other cases, there is no signal.

Next, the operation of the microcomputer of the ironing board side control means 23
This is shown in the flowchart of FIG. First, consider a case where the transmission signal from the iron body 11 is a heating request signal. In step * 1, the process branches to step * 2 to determine whether the signal is a heating request signal. Here, the heating coil 18 is excited and it is determined in step * 3 whether the iron body 11 is on the heating coil 18 (specifically, the coil current flowing through the heating coil 18 is detected and the current is higher than a predetermined value). If it is higher, it is judged that the iron body 11 is not present). Iron body 11
If not, the process branches to step * 4, the excitation of the heating coil is stopped, and then the process proceeds to step * 5. If it is determined in step * 3 that the iron body 11 is present, the process directly proceeds to step * 5. In step * 5, the steam suction fan 20 and the pilot lamp 21 are operated. After that, the process moves to step * 1 and the same operation is repeated.

Next, consider a case where the transmission signal from the iron main body 11 is a standby request signal. In this case, the process branches to NO in step * 1 and to YES in step * 6. Here (in step * 5) Steam suction fan 20
Then, the pilot lamp 21 is operated to move to step * 1, and the same operation is repeated thereafter.

If there is no signal from the iron body 11, step *
Branch to NO in step 1 and NO in step * 6, and steam suction fan 20 and pilot lamp in step * 7
Stop the operation of 21. After this, the process moves to step * 1 and the same operation is performed thereafter.

FIG. 4 is a diagram showing the overall configuration of this embodiment. The overall structure is almost the same as the conventional example shown in FIG.
In FIG. 4, reference numerals 11, 18, 20, and 21 denote the iron body, heating coil, steam suction fan, and pilot lamp of FIG. 1, respectively. Reference numeral 24 is a control unit including therein the inverter 19, the receiving means 22, and the ironing board side control means 23 shown in FIG. Reference numeral 25 denotes an iron body power switch that turns on and off the iron body 11. Reference numeral 26 is a temperature setting button corresponding to the set temperature input means 13 in FIG.

The operation of this embodiment will be described below with reference to FIGS. 1, 2, 3, and 4. The user first sets the power switch on the iron body 11 side to [ON] and sets the desired set temperature using the set temperature input means 13. As a result, the iron main body 11 transmits a heating request signal (assuming that the base temperature of the iron main body 11 is lower than the set temperature). Since the ironing board side control means 23 had no signal until the power switch of the iron body 11 was turned on at first, the operation of the steam suction fan 20 and the pilot lamp 21 was stopped, but a heating request signal was given. , Turn the steam suction fan 20 to turn on the pilot lamp 21. When the user further places the iron body 11 on the heating coil 18, the iron body 11 is induction-heated. As a result of the induction heating of the iron main body 11, if the base temperature becomes higher than the set value, the transmission signal from the iron main body 11 becomes a standby request signal, so that the heating of the iron main body 11 is stopped. From this state, the user irons, but if the base temperature of the iron main body 11 falls below the set temperature during the process, the iron main body 11 is heated again by induction, so the base temperature of the iron main body 11 is maintained at almost the set temperature. It will remain dripping.

When the user finishes the ironing work, the power switch of the iron main body 11 is set to [OFF]. As a result, the signal from the iron main body 11 is stopped, so that the ironing board side control means 23 stops the operations of the steam suction fan 20 and the pilot lamp 21. Even if the transmission signal is not received for some reason during ironing work (when the iron body 11 is taken to a place where the radio wave does not reach, or when the battery of the iron body 11 is exhausted), the ironing board side control means 23 Judges that there is no signal and stops the operation of the steam suction fan 20 and the pilot lamp 21.

EFFECTS OF THE INVENTION As is clear from the above embodiments, according to the present invention, the contents of the transmission signal from the iron main body are made into the heating request signal and the standby request signal, so that the steam suction fan on the ironing board side and the pilot. Since the lamp can be operated accurately, there is no waste of electricity, and since the user does not have to switch on and off the steam suction fan etc., an induction heating iron that can be used with confidence Can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an induction heating iron according to an embodiment of the present invention, and FIG. 2 is an output waveform diagram of the receiving means shown in FIG.
FIG. 3 is a flow chart showing the operation of the ironing board side control means of FIG. 1, and FIG. 4 is a sectional view showing the overall construction.
The figure is a cross-sectional view of a conventional example. 18 ... Heating coil, 11 ... Iron body, 15 ... Sending means, 14 ... Iron body side control means, 23 ... Receiving means,
20 …… Steam suction fan, 23 …… Ironing board side control means.

Claims (1)

[Claims] 1. An ironing board having a heating coil, and an ironing body that is induction-heated on the heating coil, wherein the ironing body heats when the base temperature of the ironing body is lower than a predetermined value. The ironing body side control means for controlling the transmission signal of the transmission means to transmit the request signal so that the standby request signal is transmitted when the base temperature of the iron body is equal to or higher than a predetermined value, and the ironing board transmits the transmission signal. Receiving means for receiving a transmission signal from the means, a steam suction fan for sucking steam generated from the iron body, if the received signal is a heating request signal, the heating coil is excited, and if it is a standby request signal. And an ironing board side control means for controlling to stop the excitation of the heating coil and stop the operation of the steam suction fan if there is no signal. Induction heating iron and composed.