JP2016081880A - Portable electromagnetic induction heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electromagnetic induction heater that drives a battery by causing an optimum heating behavior according to state of an object to be heated, thereby reducing power consumption required for heating.SOLUTION: A portable electromagnetic induction heater comprises: a chargeable battery 2; an electromagnetic heating coil unit 4; a power supply part 3 that supplies high frequency current to the electromagnetic heating coil unit 4 by using power from the battery 2; a temperature detection unit 80 that measures the temperature of an object HO to be heated or the temperature of the peripheral area of the object HO, or the temperatures of both of them; a heating behavior calculating section 52 that, on the basis of a temperature detection signal, calculates heating behavior including magnitude and time of induction heating caused by electromagnetic heating coil unit 4; and heating control section 53 that, on the basis of heating behavior, controls electromagnetic induction heating caused by the electromagnetic heating coil unit 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portable electromagnetic induction heating device that heats a thermal object by electromagnetic induction.

  Patent Document 1 discloses a portable electromagnetic induction heating apparatus in which an induced current is passed through a conductor to cause the conductor to generate heat by Joule heat, and the adhesive is heated by the generated conductor. This heating device has a power supply unit for supplying power, a heating head provided with a high-frequency generation circuit for converting a supply current from the power supply unit into a high-frequency current, and resistance adjustment for the high-frequency current generated in the heating head A series capacitor and a heating induction coil are provided. At that time, the heating head in which the high-frequency generation circuit and the LC circuit are integrated and separated is separated from the power supply unit by a separate configuration, and is connected to each other by a cable. This patent document merely describes that a battery can be used as a power supply unit instead of a commercial power supply.

  Patent Document 2 discloses an apparatus for joining a waterproof sheet to a fixing member made of a conductive base and a thermoplastic resin layer. The apparatus includes a heating unit that heats the conductive substrate via a sheet by electromagnetic induction, a temperature measuring unit that measures the temperature of the sheet, and a heating time setting unit that sets a heating time by the heating unit according to the temperature of the sheet. The sheet is joined to a fixing member installed at a predetermined position on the rooftop floor surface by thermal welding of the thermoplastic resin layer by heating the conductive substrate. At that time, the heating time setting means selects a heating time corresponding to the temperature of the sheet measured by the temperature measuring means from a combination of a plurality of temperature values recorded in advance and the heating time. Set.

JP 2005-19374 A International Publication WO2013 / 108820

When a battery is used as the power supply unit, it is important to reduce the power required for induction heating as much as possible in order to make the battery last longer. For this purpose, it is necessary to optimally heat the heating target without waste, and it is not sufficient to simply set the heating time based on the surface temperature of the heating target as in Patent Document 2.
From this, the problem of the present invention is not to control the heating of the heating object only by the heating time but to perform the optimal heating behavior according to the situation of the heating object, thereby reducing the power consumption necessary for the heating. It is to provide a portable electromagnetic induction heating device that is reduced and driven by a battery.

  In order to solve the above problems, a portable electromagnetic induction heating apparatus for heating a heating object according to the present invention by electromagnetic induction includes: a rechargeable battery; an electromagnetic heating coil unit; and the electromagnetic heating using electric power from the battery. Based on the temperature detection signal, a power supply unit that supplies current to the coil unit, a temperature detection unit that measures the temperature of the object to be heated and / or the surrounding area of the object to be heated, and outputs a temperature detection signal A heating behavior calculation unit that calculates the heating behavior including the intensity and time of induction heating by the electromagnetic heating coil unit, and a heating control unit that controls electromagnetic induction heating by the electromagnetic heating coil unit based on the heating behavior are provided. .

  Such a portable electromagnetic induction heating device according to the present invention employs a battery to avoid the problem that a long power cable not only causes power loss but also disturbs the worker's walking. Furthermore, based on the temperature detection signal obtained by measuring the temperature of the object to be heated and / or the surrounding area of the object to be heated, not only the induction heating time but also its intensity is calculated. By controlling the prescribed heating behavior, the optimum heating behavior according to the situation of the heating object is realized. Thereby, since the power consumption required for a heating reduces, a small battery can be utilized.

  In one preferred embodiment of the present invention, the heating behavior is the intensity of induction heating that changes over time, and a table for deriving the heating behavior from the temperature detection signal is set in the heating control unit. Yes. Based on the temperature detection signal, by calculating the predetermined intensity and the predetermined time and induction heating the heating object, it is possible to induction heating the heating object more appropriately than adjusting only the heating time. However, the heating target can be more appropriately induction-heated by changing its strength with the passage of time during induction heating. For example, since the temperature of the object to be heated is low at the beginning of heating, it is possible to achieve the required heating specifications with low power consumption by applying a large heating intensity and decreasing the heating intensity to a constant value or gradually after a predetermined time. It becomes.

  Since the heating coil unit that has performed the induction heating has a considerably high temperature, it is preferable that the heating coil unit be quickly cooled when the heat treatment is completed. Therefore, in a preferred embodiment of the present invention, a cooling mechanism that cools the heating coil unit and a cooling control unit that controls the cooling mechanism are provided. Thereby, the heating coil unit in which the temperature of the heating process has increased can be appropriately cooled.

  Furthermore, in a heat treatment such as a melt bonding operation, it is also important to cool the object to be heated after the heating process. For this reason, in one of the preferred embodiments of the present invention, a cooling passage is formed in a base having a shape facing the heating object while placing the heating coil of the heating coil unit, and the cooling mechanism is cooled. A cooling fan is provided, and the cooling air from the cooling fan is configured to flow into the cooling passage after passing through the heating coil. In this configuration, the base that faces the object to be heated is also cooled by the cooling air passing through the heating coil unit, and as a result, the object to be heated can be effectively cooled.

One suitable application example of the portable electromagnetic induction heating device according to the present invention, which is excellent in portability and workability, is a fixing operation of a waterproof sheet stretched on a waterproof construction surface made of concrete or the like. In this fixing operation, a fixing tool having an adhesive layer that can be thermally welded to the upper surface is fixed by an anchor bolt or the like, and the contact surface of the electromagnetic heating coil unit is pressed against the adhesive layer via a waterproof sheet, thereby The waterproof sheet is bonded and fixed by melting the adhesive layer by the heat generated by the fixture. Accordingly, in one of the preferred embodiments of the present invention, the heating object is a fixture having an adhesive layer to be joined to a sheet material, and the electromagnetic heating coil unit is bonded to the fixture with the sheet material interposed therebetween. A contact surface that can face the layer, the contact surface being exposed from the housing, and the temperature detection unit includes a surface temperature detector that detects a surface temperature of the sheet material It is.
With this configuration, the worker carries the portable electromagnetic induction heating device and places the contact surface on the adhesive layer of the fixture with the sheet material sandwiched therebetween, so that the fixing work of the sheet material is sequentially performed. At that time, the fixing tool can be induction-heated with an appropriate heating behavior based on the temperature of the fixing tool and the temperature of the adhesive layer estimated from the temperature of the sheet material.

  When the waterproof sheet is joined to the fixture using the portable electromagnetic induction heating device according to the present invention, the fixture is exposed to the field in advance, so the surface temperature of the waterproof sheet alone causes an error in estimating the temperature of the fixture. May come out. For this reason, in order to improve the estimation accuracy of the temperature of the fixture, it is advantageous that the temperature detection unit includes an environmental temperature detector for detecting the environmental temperature around the sheet material.

  In one preferred embodiment of the present invention, the battery, the electromagnetic heating coil unit, the power feeding unit, and the control unit are integrally assembled through a housing. In this configuration, the electromagnetic induction heating device is a single device, and no connection cable is required, and problems such as a decrease in workability due to the long connection cable obstructing walking are solved. Moreover, portability improves by integrating the whole apparatus.

It is a schematic diagram which shows the basic structure of the portable electromagnetic induction heating apparatus by this invention, and the flow of heating behavior control. It is a schematic diagram which shows the component of a portable electromagnetic induction heating apparatus. It is a perspective view which shows one of the embodiment of the portable electromagnetic induction heating apparatus by this invention. It is a perspective view which shows a waterproof sheet fixing metal fitting. It is sectional drawing of a waterproof sheet fixing metal fitting. It is sectional drawing which shows the formation condition of a waterproof layer. It is a functional block diagram which shows the control system of a portable electromagnetic induction heating apparatus. It is a side view of the pistol type electromagnetic induction heating apparatus which is another embodiment. It is a functional block diagram which shows the control system of the portable electromagnetic induction heating apparatus which is another embodiment.

The basic structure and control principle of a portable electromagnetic induction heating device according to the present invention will be described with reference to FIG.
A portable electromagnetic induction heating device 100 in this embodiment includes a housing 1 in which the upper end of a cylindrical body 12 having a circular cross section is closed by a top plate 11 in this embodiment. The cylindrical body 12 is divided into three spaces by two partition walls 13a and 13b, and a first space S1, a second space S2, and a third space S3 in order from the top. The battery 2 is disposed in the uppermost first space S1, the power feeding unit 3 and the control unit 5 are disposed in the intermediate second space S2, and the electromagnetic heating coil unit is disposed in the lowermost third space S3. 4 and a cooling fan unit 60 are arranged. That is, the battery 2, the power feeding unit 3, the control unit 5, the electromagnetic heating coil unit 4, and the cooling fan unit 60 are integrally assembled by the housing 1. The top plate 11 is provided with an arched grip 19.

  The wall 12 surrounding the first space S1 of the cylindrical body 12 is provided with an opening 12a for taking in and out the battery 2, and the battery 2 is provided on the wall surface at a position facing the opening 12a. 17 is detachable.

  In the wall body surrounding the second space S2 of the cylindrical body 12, in order to release heat released from the power feeding section 3 and the control unit 5 accommodated in the second space S2, a large number of outside air circulation ports are provided. Is formed.

  The electromagnetic heating coil unit 4 and the cooling fan unit 60 as the cooling mechanism 6 are integrally assembled, and the upper end portion thereof is connected to the partition wall 13b via the universal joint 14. Therefore, in this embodiment, the oscillation axis Px is an axis that allows oscillation in all directions, and the electromagnetic heating coil unit 4 can take a free angular attitude with respect to the housing 1 within a predetermined angle. . The electromagnetic heating coil unit 4 includes a heating coil 40 and a base 41 on which the heating coil 40 is mounted. The base 41 is a post portion 41b that is erected at the center of the disc portion 41a and the disc portion 41a. And have. A cooling fan unit 60 is provided at the upper end of the post portion 41b. The cooling fan unit 60 supplies cooling air to the heating coil 40 when the fan is driven by a motor (not shown). Furthermore, a flow passage 61 through which the cooling air from the cooling fan unit 60 passes is formed in the disc portion 41a, and the cooling effect on the sheet material 7 is enhanced.

  A pad 43 is attached to the disc portion 41a so as to cover the bottom surface of the disc portion 41a. The pad 43 is made of a cushioning material and has a function of effectively pressing the sheet material 7 after induction heating.

  The power supply unit 3 includes a power electronics circuit such as an inverter circuit that converts a direct current from the battery 2 into a high-frequency current. By supplying the high-frequency current generated by the power feeding unit 3 to the heating coil 40 of the electromagnetic heating coil unit 4, the heating object HO positioned facing the contact surface 42 is electromagnetically heated.

  The control unit 5 that controls the power feeding unit 3 is disposed in a gap space between the battery 2 or the power feeding unit 3 and the housing 1. In the example of FIG. 1, the battery 2 is disposed adjacent to the mounting portion.

  The electromagnetic heating coil unit 4 can be attached by using a connecting tool that can be displaced with respect to the housing 1 (for example, a simple swing shaft or a universal joint). With this displaceable connection, the housing 1 can swing in the left-right direction, the front-rear direction, or any of these directions with the contact surface 42 of the electromagnetic heating coil unit 4 in contact with the flat surface. Since the contact surface 42, that is, the angle of the electromagnetic heating coil unit 4 with respect to the housing 1 can be changed, the contact surface 42 can be brought into contact with the surface to be heated without fine adjustment of the attitude of the housing 1. it can.

  The displacement of the electromagnetic heating coil unit 4 is limited by a stopper provided in the housing 1. An elastic body such as a spring is preferably used as the stopper. 2 is set so that the center of gravity line GL of the battery, which is a vertical line passing through the center of gravity Gb of the battery 2, passes through the contact surface 42 even in the maximum swinging posture of the electromagnetic heating coil unit 4 indicated by the dotted line in FIG. Has been. In this case, the effect of stabilizing the state in which the contact surface 42 is in contact with the surface to be heated depending on the weight of the battery 2 can be obtained.

  In the portable electromagnetic induction heating device 100 of this embodiment, in the heating operation posture, the battery 2 and the electromagnetic heating coil unit 4 so that the vertical line passing through the center of gravity Gb of the battery 2 enters the contact surface 42 of the electromagnetic heating coil unit 4. And the positional relationship is set. This is convenient for stabilizing the heating operation posture, but the present invention is not limited to this structure, and a vertical line passing through the center of gravity Gb of the battery 2 may be separated from the contact surface 42.

  In this embodiment, the temperature detection unit 80 is a bracket in which a housing 1 is provided with a surface temperature detector 801 that detects the surface temperature of the sheet material 7 and an environmental temperature detector 802 that detects the environmental temperature around the sheet material 7. Equipped with. Detection signals from the surface temperature detector 801 and the environmental temperature detector 802 are sent to the control unit 5 as temperature detection signals. Further, an operation switch 81 having an induction heating start function is provided around the grip 19 of the housing 1.

  The induction heating process starts when the operator sets the portable electromagnetic induction heating device 100 at a predetermined position of the heating object HO and operates the operation switch 81. First, based on the temperature detection signal sent from the temperature detection unit 80, the heating behavior calculation unit 52 built in the control unit 5 calculates the heating behavior consisting of the heating time and the heating intensity, and similarly the control unit 5 is given to the heating control unit 53 constructed. The heating control unit 53 controls the power feeding unit 3 to realize electromagnetic induction heating by the electromagnetic heating coil unit 4 based on the given heating behavior.

  When forced cooling is necessary after induction heating, a cooling control signal is given from the cooling control unit 54 to the cooling mechanism 6. Thereby, the cooling mechanism 6 drives a cooling fan, for example, and cools the heating coil 40 and the heating target HO.

  Next, one specific application example of the portable electromagnetic induction heating device according to the present invention will be described. Here, the portable electromagnetic induction heating device fixes the waterproof sheet by melting the adhesive layer applied to the upper surface of the fixture fixed to the waterproof base on the rooftop etc. by heating the fixture by electromagnetic induction Used when bonding and fixing to tools.

  FIG. 3 is a perspective view showing the roof slab of the building before laying the waterproof sheet. This perspective view shows an operation of bonding a sheet material 7 which is a waterproof sheet to a fixture 70 disposed on a reinforced concrete slab body serving as a waterproof base using a portable electromagnetic induction heating device 100. Yes. This portable electromagnetic induction heating apparatus 100 employs the basic structure described with reference to FIG.

  The slab body assumes a roof slab. However, in addition to slabs of reinforced concrete structure, slabs formed by laying ALC panels, slabs formed by combining deck plates and metal folded plates and concrete, and those with a heat insulation layer laminated on them, etc. The present invention can be applied to various types of slabs. It is preferable that the slab main body can fix the fixing tool 70 with an anchor bolt.

For example, as shown in FIGS. 3, 4, and 5, the fixture 70 melts as an adhesive to the waterproof sheet on the upper surface of a stainless steel disc having a diameter of about 50 to 100 mm and exhibits adhesiveness. A washer-shaped body coated with a planar hot-melt adhesive layer (hereinafter simply referred to as an adhesive layer) 71 made of a thermoplastic synthetic resin such as a polyester resin. The fixture 70 is formed with a countersink recess 72 at the center and an attachment hole 74 of an anchor bolt 79 (see FIG. 6) at the bottom thereof, and the upper surface of the fixture 70 has a predetermined width around the countersink recess 72. An annular recess 73 is formed with a gap therebetween. The fixtures 70 are arranged on the slab body at respective positions at predetermined intervals in the vertical and horizontal directions, and are fixed by screws through the attachment holes 74.
Note that the fixture 70 is formed into a undulating shape as shown in the figure by pressing a sheet metal, and by forming concave portions such as the countersink concave portion 72 and the annular concave portion 73, a secondary cross-section is maintained as a flat plate. The moment increases and high strength can be obtained even with a thin plate.

  The sheet material 7 is composed of, for example, a PVC sheet, rolls a long waterproof sheet having a predetermined width at a factory to form a roll body, and arranges the roll body while spreading it in the field. A large-area waterproof sheet can be created by bonding the side edges of the sheet material 7 together. Of course, it is also possible to form an integral waterproof sheet in advance according to the area to be laid, and in addition to PVC, rubber and TPE (Thermo Plastic Elastomer) may be used. It may be a sheet made of water or a waterproof sheet made of other materials.

  As shown in FIG. 5, in order to fix the sheet material 7 to the slab body, first, the sheet material 7 is put on a large number of fixtures 70 (see FIG. 6A). Next, the portable electromagnetic induction heating device 100 is set at a position directly above the fixture 70 from above the sheet material 7, and induction heating is performed on the fixture 70 (see FIG. 3). By heating the fixture 70, the adhesive layer 71 is melted, and the upper surface of the fixture 70 and the lower surface of the sheet material 7 are brought into close contact with each other through the melted adhesive, and then the pressure is applied while cooling. 70 and the sheet material 7, and as a result, the sheet material 7 and the slab body are fixed (see FIG. 6B).

  As shown in FIG. 7, the control unit 5 includes a detection signal evaluation unit 51, a heating behavior calculation unit 52, a heating control unit 53, and a cooling control unit 54 as functional units related to the present invention. These functions are substantially realized by starting a program. The control unit 5 is connected to various external devices via the input / output interface 50. As external devices, a memory device 55, a data communication unit 56, a notification unit 57, a temperature detection unit 80, a sensor / switch group 8, and a GPS unit 800 are connected. Further, the control unit 5 is connected to a controller and a power supply unit 3 built in the battery 2 so as to be able to transmit a signal such as a control signal.

  In this embodiment, the temperature detection unit 80 includes a surface temperature detector 801 that detects the surface temperature of the sheet material 7 and an environmental temperature detector 802 that detects the environmental temperature around the sheet material 7. The detection signal is sent to the control unit 5. The surface temperature detector 801 and the environmental temperature detector 802 are mounted on a bracket provided in the housing 1. The sensor / switch group 8 is a general term for sensors and switches incorporated in the portable electromagnetic induction heating device 100. As particularly relevant to the present invention, the operation switch 81, the pressure-sensitive switch 82, the position detection sensor, and the like. 83. The operation switch 81 is provided around the grip 19 of the housing 1 and has an induction heating start function. The pressure sensitive switch 82 is provided between the disc portion 41a and the pad 43, and detects the pressing pressure against the sheet material 7 during the pressurizing operation after induction heating. The position detection sensor 83 detects whether or not the fixture 70 is accurately positioned within the induction heating effective range of the heating coil 40. In this embodiment, the position detection sensor 83 detects the fixture 70, preferably three or more. This is a magnetic sensor. The GPS unit 800 detects a radio wave from a satellite such as a GPS satellite, calculates a current position (azimuth coordinate) of the portable electromagnetic induction heating device 100, and supplies the calculated position to the control unit 5.

  The detection signal evaluation unit 51 of the control unit 5 evaluates signals input from the sensor / switch group 8, the temperature detection unit 80, and the GPS unit 800, and sends the evaluation signal to a function unit that requires the evaluation signal. For example, the temperature detection signal is sent to the heating behavior calculation unit 52 and the heating control unit 53 as a temperature detection signal. The signals from the pressure-sensitive switch 82 and the position detection sensor 83 are compared with the reference ranges set for them, and when they are out of the reference ranges, a visual alarm or an audible alarm is given through the notification unit 57.

  The heating behavior calculation unit 52 includes a heating time calculation unit 521, a heating intensity calculation unit 522, and a behavior derivation table 523. The heating time calculation unit 521 calculates the heating time using the behavior derivation table 523 from the temperature detection signal including information on the surface temperature of the sheet material 7 and the environmental temperature. The heating intensity calculator 522 calculates the heating intensity (induction heating intensity) from the temperature detection signal using the behavior derivation table 523. At that time, if the heating time is divided into unit times and the heating intensity is calculated for each unit time, a heating intensity curve over time can be obtained. A heating control command based on the heating intensity curve is transferred to the heating control unit 53. The heating control unit 53 gives a control signal to the power feeding unit 3 based on the received heating control command. Based on the received control signal, the power supply unit 3 controls the power electro circuit (inverter circuit, booster circuit, etc.) over time so that an appropriate heating behavior is realized in the fixture 70.

  After the induction heating is finished, the cooling control unit 54 gives a cooling control signal to the cooling fan unit 60 and drives the cooling fan to cool the heating coil 40 and the sheet material 7. During this cooling, by pressing the sheet material 7 positioned above the fixture 70 through the pad 43, the adhesion and fixation between the fixture 70 and the sheet material 7 are favorably promoted.

  In the memory device 55, work data related to adhesive fixing to each fixing tool 70 using induction heating is written. The data communication unit 56 is an optional function, and is used to receive internal data such as work data to the outside and data transmitted from the outside.

  FIG. 8 shows an ultra-small pistol electromagnetic induction heating device as another embodiment of the portable electromagnetic induction heating device according to the present invention. The housing 1 is a cylindrical body bent into an L shape, and a rechargeable battery 2 is disposed on one end side thereof, and an electromagnetic heating coil unit 4 is disposed on the other end side. A pad 43 is attached to the tip of the electromagnetic heating coil unit 4, that is, the surface facing the heating object HO. A grip portion 190 having a shape that can be easily gripped with one hand is formed in an intermediate portion of the housing 1, and a trigger that functions as the operation switch 81 is provided at a position that can be easily operated with a finger of the hand that grips the grip portion 190. The control unit 5 is disposed inside the grip 190, and the power feeding unit 3 is disposed between the control unit 5 and the electromagnetic heating coil unit 4. A flat panel that functions as the notification unit 57 is provided around the grip unit 190, and various information can be displayed. Further, a detachable semiconductor memory card that functions as the memory device 55 is also mounted. Although not shown in FIG. 8, various other sensor / switch groups 8, a temperature detection unit 80, and a GPS unit 800 may be provided. In order to enable one-handed operation, a lightweight and small high-performance battery is used as the battery 2, but the battery capacity is insufficient to continue the electromagnetic induction heating for a long time, so that the worker always has a plurality of spares. Bring the battery 2 and work while replacing the battery.

[Other Embodiments]
(1) In the embodiment described above, the heating behavior calculation unit 52 uses the temperature detection signal including the surface temperature and the environmental temperature output from the temperature detection unit 80 as input parameters, and is defined by the heating time and the heating intensity. The behavior is calculated. Alternatively, only the surface temperature or only the environmental temperature may be used as the input parameter. Further, as shown in FIG. 9, not only the temperature detection signal including the surface temperature and the environmental temperature as input parameters but also the GPS unit 800 is output so that the temperature of the fixture 70 can be estimated more accurately. GPS data including local data and time data may also be adopted. With this GPS data, the region, season, time zone, etc. can be used for calculating the heating behavior.
(2) In the embodiment described above, the battery 2, the power feeding unit 3, and the control unit 5 are integrally assembled by the housing 1 with the electromagnetic heating coil unit 4 and the cooling fan unit 60. Instead of this, the power supply unit may be separated from the housing 1 in which the electromagnetic heating coil unit 4 and the power feeding unit 3 are assembled and connected from the battery 2 to the power feeding unit 3 using a cable. Furthermore, the battery 2 and the power feeding unit 3 may be integrated, and the power feeding unit 3 and the electromagnetic heating coil unit 4 may be connected by a cable.
(3) Each functional unit of the control unit 5 shown in FIG. 7 is divided for convenience of explanation, and a plurality of arbitrary functional units may be integrated, or each functional unit may be further divided. May be.

  The present invention can be applied to a portable heating device using magnetic induction heating.

1: Housing 2: Battery 3: Power supply unit 4: Electromagnetic heating coil unit 40: Heating coil 41: Base 5: Control unit 51: Detection signal evaluation unit 52: Heating behavior calculation unit 53: Heating control unit 54: Cooling control unit 6: Cooling mechanism 60: Cooling fan unit 7: Sheet material 70: Fixing tool 71: Adhesive layer 8: Sensor switch group 80: Temperature detection unit 81: Operation switch 82: Pressure sensitive switch 83: Position detection sensor 521: Heating time Calculation unit 522: Heating intensity calculation unit 523: Behavior derivation table 800: GPS unit 801: Surface temperature detector 802: Environmental temperature detector 100: Portable electromagnetic induction heating device HO: Heating object

Claims (7)

A portable electromagnetic induction heating device for heating an object to be heated by electromagnetic induction,
Rechargeable battery,
An electromagnetic heating coil unit;
A power feeding unit that supplies current to the electromagnetic heating coil unit using power from the battery;
A temperature detection unit that measures the temperature of the heating object or the surrounding area of the heating object or both and outputs a temperature detection signal; and
A heating behavior calculator for calculating a heating behavior including the intensity and time of induction heating by the electromagnetic heating coil unit based on the temperature detection signal;
A heating control unit for controlling electromagnetic induction heating by the electromagnetic heating coil unit based on the heating behavior;
A portable electromagnetic induction heating device.   The portable electromagnetic induction heating according to claim 1, wherein the heating behavior is an intensity of induction heating that changes with time, and a table for deriving the heating behavior from the temperature detection signal is set in the heating control unit. apparatus.   The portable electromagnetic induction heating device according to claim 1, further comprising: a cooling mechanism that cools the electromagnetic heating coil unit; and a cooling control unit that controls the cooling mechanism.   A cooling passage is formed in a base having a shape facing the heating object while placing the heating coil of the electromagnetic heating coil unit, the cooling mechanism includes a cooling fan, and the cooling air from the cooling fan is The portable electromagnetic induction heating device according to claim 3, wherein the portable electromagnetic induction heating device flows into the cooling passage after passing through the heating coil. The heating object is a fixture having a planar adhesive layer to be joined to a sheet material, and the electromagnetic heating coil unit has a contact surface that can be opposed to the planar adhesive layer of the fixture with the sheet material interposed therebetween. ,
The portable electromagnetic induction heating device according to any one of claims 1 to 4, wherein the temperature detection unit includes a surface temperature detector that detects a surface temperature of the sheet material.   The portable electromagnetic induction heating device according to claim 5, wherein the temperature detection unit includes an environmental temperature detector that detects an environmental temperature around the sheet material.   The portable electromagnetic induction heating device according to any one of claims 1 to 6, wherein the battery, the electromagnetic heating coil unit, the power feeding unit, and the control unit are integrally assembled through a housing.

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