JPH0323900A - Induction heating type iron - Google Patents

Abstract

PURPOSE:To preclude the possibility of being burnt without metallic buttons or the like on clothes being not heated by induction when a user irons after the user operates an input device for prohibiting an auxiliary heating coil from being excited, by providing the input device for prohibiting the auxiliary heating coil from being excited, which sends a signal prohibiting the auxiliary heating coil from being excited, to an inverter. CONSTITUTION:Before ironing, a user pushes an auxiliary heating coil- prohibiting switch 16. In this way, when a temperature in the information received by a receiving device 19 is lower than a preset temperature, in other words, when heating is necessary, an inverter 20 restricts the supply of a heating current for induction to only a main heating coil 23. That is to say, while the user irons on an ironing board 10, a high frequency current is not supplied from the inverter 20 to an auxiliary heating coil A 21 or to an auxiliary heating coil B 22. In this way, while the user is ironing, metallic parts are not heated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an induction heating iron used in general households.

Conventional Technology Recently, cordless irons have appeared on the market, but all of these irons can only supply power when the iron body is placed on an ironing stand.
During the actual ironing work, the heat storage was relied upon. As a result, the temperature of the base surface of the iron would drop after running the iron for a certain amount of time, making it impossible to call it a full-fledged 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. An example is shown in FIG. Third
In the figure, reference numeral 1 denotes an iron body that is heated by induction by auxiliary heating coils 3 and 4 or by a main heating coil 5.

Although not particularly shown in the drawing, the "iron main body" includes an internal mister that detects the temperature of the iron base, a buzzer, and a control circuit, and the control circuit detects the temperature of the iron base. When the temperature exceeds a predetermined value (temperature at which ironing can be performed), a buzzer sounds to notify the user. 2 is an ironing board; 3 and 4 are auxiliary heating coil A and auxiliary heating coil B that induction-heat the iron body during ironing operations; 5 is a main heating coil that induction-heats the iron body between ironing operations; and 6 An inverter that supplies high-frequency current to the auxiliary heating coils 3 and 4 or the main heating coil 5, 7 the felt laid on the ironing surface (ironing surface), and 8 the iron itself during the ironing process. A ceramic plate 9 is placed on top of this, and 9 is an IOOV AC power source for general household use.

The operation of the conventional induction heating iron will be described below with reference to FIG. First, the user places the iron body 1 on the ceramic plate 8. At this time, the inverter 6 detects that the iron body 1 is above the main heating coil 5 and supplies high frequency current to the main heating coil 5. As a result, the main heating coil 5 is excited, and the iron body 1 is heated by induction. When the iron body 1 reaches a temperature that allows ironing, a notification sound is emitted from the iron body 1. From this point on, the user holds the iron body 1 and irons on the felts 1 and 7. While the user is ironing, if the iron body 1 is located near the top of the auxiliary heating coil A3 or the auxiliary heating coil B4, the inverter 6 detects this and supplies high frequency current, so the iron body 1 adjusts accordingly. Heated by induction. During ironing work, when sorting clothes, etc., the iron main body 1 is placed on the ceramic plate 8. In this way, even during ironing work, the iron main body 1 is heated by induction by the auxiliary heating coil A3 or the auxiliary heating coil B4, so that the iron main body will not cool down even if the ironing work is performed for a long time.

Problems to be Solved by the Invention However, such conventional techniques have the following problems in terms of safety. In other words, if you hang clothes that have metal buttons, zippers, etc.
If these metal parts are located in the vicinity 3 of the iron body 1, these metal parts will be heated to a high temperature at the same time as the iron body is heated.

Therefore, there is a risk that a user may touch the metal button and get burned while trying to handle clothing. According to measurements by the inventors, the temperature rise of these metal parts is 1. 4deg/
In some cases, the slope may be quite steep, and there is an extremely high possibility that the user will suffer burns.

The present invention has been made in view of the above-mentioned conventional problems,
It is an object of the present invention to provide an induction heating iron that does not unnecessarily heat metal parts attached to clothing by induction.

Means for Solving the Problems In order to achieve the above object, the present invention comprises an iron body and an ironing board, the ironing board has at least one auxiliary heating coil for induction heating the iron body during ironing work, and ``ironing work''. A placing part on which the iron body is placed, a main heating coil provided under this placing part, an inverter that supplies high-frequency current to the auxiliary heating coil and the main heating coil, and an inverter that supplies high-frequency current to the auxiliary heating coil and the main heating coil. an auxiliary heating coil excitation prohibition input means that is operated and sends an auxiliary heating coil prohibition signal or an auxiliary heating coil permission signal to the inverter;
The inverter is an induction heating iron that prohibits high-frequency current supply to the auxiliary heating coil when it receives an auxiliary heating coil prohibition signal from the auxiliary heating coil excitation prohibition input means.

An auxiliary heating coil excitation prohibition input means is provided to send a signal to the inverter to prohibit the excitation of the auxiliary heating coil, and the user operates this auxiliary heating coil excitation prohibition input means to perform ironing work. If you do this, there will be no induction heating of metal buttons on clothing, and there is no risk of burns.

Furthermore, this auxiliary heating coil excitation prohibition input means can of course be turned on and off as necessary, making it possible to provide an easy-to-use and safe induction heating iron.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In Fig. 1, 10 is the ironing surface that actually performs the ironing process, and two auxiliary heating coils (see Fig. 2, 3 and 4) are provided below this. 11 is the iron body. , 12 is an ironing board, and 13 is a placing part on which the iron main body 11 is placed during ironing work.It has a ceramic plate and below it is a main heating coil (see Fig. 2, 5). 14 is a set temperature switch for setting the base temperature of the iron body 11, and 15 is a temperature display LED that shows the current temperature of the iron base and the set temperature set by the user.1
Reference numeral 6 denotes an auxiliary heating coil excitation prohibition input means, which consists of a push switch. When this switch is pressed once, the excitation of the two auxiliary heating coils provided under the ironing surface 10 is prohibited, and when it is pressed again, the above-mentioned Energization of the auxiliary heating coil is permitted. FIG. 2 is a block diagram showing an embodiment of the induction heating type iron of the present invention. In Figure 2, 1
Reference numeral 1 indicates the iron body, and reference numeral 14 indicates a set temperature changeover switch, which uses a bushico switch, which normally outputs LOW, but when pressed, outputs HIGH. 15 is a temperature display L E I), which consists of four LEDs, each of which can be set to off, 120 degrees, 160 degrees, and 200 degrees.
It corresponds to the degree. 16 is the auxiliary heating coil excitation prohibition input means described in ``2'', which normally outputs a LOW signal, but when pressed once, it locks to a HIGH signal.
If pressed again, the lock will be released and the original ■,
This becomes an OW signal. Reference numeral 17 denotes a base temperature detection means for detecting the temperature of the base surface of the iron main body 1, which uses a thermistor. ]8 receives the temperature information from the base temperature detection stage 17, converts it into a signal, and converts it into a signal of 300 MH.
This is a transmitting means that sends it to the ironing board side on a carrier wave of z. 19 is a receiving means that receives the radio wave signal from the transmission stage 18 and sends temperature information to the inverter 20-\. 20 is a high frequency current to the auxiliary heating coil A22, the auxiliary heating coil B23, or the main heating coil 24. The inverter that supplies this has the following functions. First, the setting temperature set by the setting 7 temperature changeover switch 14 and the temperature information from the receiving stage 14 (i.e., ゜iron body 1
1 base temperature), and if the temperature information from the receiving stage 14 is lower than the set temperature, a search is made to see if there is a heating coil on which the iron body 11 is placed, and if there is, a high-frequency current is applied to that heating coil. When the temperature information from the receiving means 14 is higher than the set temperature, the iron body 11 is in a standby state and the induction heating is not performed. Second, from the set temperature changeover switch 14,
When the GH signal is received, the set temperature is switched up one level. Thirdly, the temperature information from the reception stage 14 is displayed on the temperature display LED 15 in blinking mode, and the set temperature is displayed in lighting mode. Fourthly, when a HIGH signal is received from the auxiliary heating coil excitation prohibition input means 16, if the temperature information from the reception stage 14 is lower than the set temperature, the search described in the first operation is performed as the main This is done by focusing only on the heating coil 23. In other words, the supply of high frequency current to the auxiliary heating coil A21 or the auxiliary heating coil B228 is prohibited.

Fifth, when the temperature display LED 15 is set to the "off 1" position by the set temperature changeover switch J4, heating is turned off to all heating coils regardless of the temperature information from the main body 11. Not performed.

The operation of the induction heating iron of this embodiment will be explained below. First, normal ironing will be explained. First, the user places the iron main body 11 on the mounting plate 13. Next, press the set temperature switch to set the desired base temperature. At this time, since the iron body 11 is at room temperature, the temperature information of the iron base transmitted by the sending stage 11 is lower than the set temperature. The inverter 20 detects the heating coil (in this case, the main heating coil 23) on which the iron main body 1 is mounted, and supplies high-frequency current to the heating coil. The main heating coil 23 supplied with the high frequency current is excited and heats the iron body 11 by induction. As a result of the induction heating of the iron main body 11, the base temperature rises by 2' and soon reaches the set temperature. At this time, the temperature information sent from the iron body is equal to or higher than the set temperature, so the inverter 20 stops heating the iron body 1. The user sees the display on the temperature display LED, knows that the hair temperature of the iron main body 11 has reached the appropriate temperature, and starts ironing. When the base temperature of the iron main body 11 falls due to ironing, the base temperature detection stage 17 detects this, and the transmission stage 18 transmits this signal. Receiving means 19 receives this signal,
The inverter 20 detects this and detects the position of the heating coil on which the iron body 11 is placed. When the iron main body 11 is located near the auxiliary heating coil A21, the inverter 20 supplies high frequency current to the auxiliary heating coil A21. Moreover, when it is located near the auxiliary heating coil B22, a high frequency current is supplied to the auxiliary heating coil B22. In this way, even during ironing work, the base temperature of the iron main body 11 is maintained at approximately the set temperature.

When the ironing work is finished, the user operates the set temperature switch 14 to set the temperature display LED to the OFF position. When this happens, heating of all the heating coils is stopped regardless of the position of the iron body 11, and the heat temperature of the iron body 11 falls to room temperature.

Next, a case will be described in which clothing that has parts that may be heated by induction, such as metal buttons and fasteners, is ironed. In this case, the user presses the auxiliary heating coil prohibition switch 16 before ironing. This allows the inverter 20 to limit the supply of induction heating current to only the main heating coil 23 when the temperature information received by the reception stage 19 is lower than the set temperature, in other words when heating is required. be. In other words, while the user is ironing on the ironing surface 10, the inverter 2 is connected to the auxiliary heating coil A21 or the auxiliary heating coil B22.
0 means that no high frequency current is supplied. In other words, the metal parts are not heated during the ironing process. As a result, the iron body 11
1. Although the temperature may drop, it is necessary to fan the clothes between ironing operations, and at this time the iron main body 11 is placed on the ceramic plates 1 and 13. In this state, the iron main body 1] is heated by induction by the main heating coil 23, and the base temperature of the iron main body l1 is restored. When the ironing work is finished, operate the set temperature switch 14 to display the temperature L E
Set D to [Cut 1 position. In this way, the iron body 1
The base temperature of No. 1 falls to room temperature.

If the clothes to be ironed do not have metal buttons or zippers, press the auxiliary heating coil prohibition switch 16 again to switch to the normal ironing mode.

In this embodiment, the auxiliary heating coil excitation prohibition input means is provided on the ironing board side, but it may be provided on the iron main body side in order to improve operability. In this case, a signal for prohibiting the operation of the auxiliary heating coil is added to the signal from the iron body.

1 2 Effects of the Invention As is clear from the above embodiments, the present invention provides a means for inhibiting the operation of the auxiliary heating coil so that when ironing clothing having metal buttons etc., the metal is heated by induction heating. Therefore, it is possible to provide a safe induction heating iron that can prevent a user from getting burned by touching the iron.

[Brief explanation of the drawing]

FIG. 1 is an external view showing an embodiment of the induction heating iron of the present invention, FIG. 2 is a block diagram showing the electric circuit thereof, and FIG. 3 is a block diagram showing a conventional induction heating iron. 11... Iron body, 12... Ironing board, 13
. . . Placement unit, 16 . . . Auxiliary heating coil excitation prohibition input means, 20 .

Claims (1)

[Claims] The ironing board is composed of an iron body and an ironing board, and the ironing board has at least one auxiliary heating coil for inductively heating the iron body during ironing operations, a placing part on which the iron body is placed between ironing jobs, and a place under the placing part. A main heating coil provided, an auxiliary heating coil, and an inverter that supplies high-frequency current to the main heating coil, and an auxiliary heating coil that is manually operated from the outside and sends an auxiliary heating coil prohibition signal or an auxiliary heating coil permission signal to the inverter. excitation prohibition input means, wherein the inverter prohibits high-frequency current supply to the auxiliary heating coil when receiving an auxiliary heating coil prohibition signal from the auxiliary heating coil excitation prohibition input means.