JPS63299088A - Composite heating device - Google Patents

Abstract

PURPOSE:To reduce the facility cost, made the transfer of a container unnecessary during the heating process and heat reserving process, and improve the convenience for handling by switching a power converting unit for use combining a dielectric heating device and an induction heating device to obtain the high-frequency power. CONSTITUTION:A power converting unit converting the DC or AC power into the high-frequency power and a dielectric heating device and an induction heating device operated by the high-frequency power of this power converting unit are provided. A tank 32 having an endoergic pipe 35 guided into the heating unit of the dielectric heating device and a hot water injecting pipe 26 injecting the liquid in this endoergic pipe 35 into a container 28 mounted on the heating unit of the dielectric heating device is provided. In addition, a control means 25 capable of switching the high-frequency power of the power converting unit to the dielectric heating device and the induction heating device and inputting it and temperature-controlling the heated section when it is switched to the induction heating device is provided. A microwave oven, an electromagnetic cooking utensil, and a coffee maker are combined, thus the convenience for handling is good, and the facility cost cen be reduced.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention relates to an induction heating device called a microwave oven, an induction heating device called an electromagnetic cooker, and a method for heating water in a tank.
This invention relates to a composite heating device that is integrated with a coffee maker that keeps warm.

(Prior Art) Generally, a microwave oven has a heating element housed in the microwave cavity and heats using microwaves, so it is highly efficient, but it is not suitable for frequently pouring hot water while keeping it warm. , Conversely, an electromagnetic cooker places a container on a totsubu plate and heats it using an induced current, so it can be used for coffee makers, etc.
Although it is suitable for pouring hot water frequently while keeping it warm,
Heating efficiency was lower than that of a microwave oven. For this reason, restaurants and the like that supply large quantities of beverages have prepared both of these to meet the demand.

(Problems to be Solved by the Invention) As mentioned above, when equipped with a microwave oven, an electromagnetic cooker, and a coffee maker, it becomes extremely difficult to use depending on the arrangement of the microwave oven, electromagnetic cooker, and coffee maker, as it is necessary to change containers. , each had to be equipped with a heat generating circuit, which caused a problem in that equipment costs rose.

This invention was made to solve the above problems, and it is easy to use when heating and keeping a large amount of liquid warm, as well as pouring hot water frequently.In addition, it significantly reduces equipment costs. The objective is to obtain a composite heating device that can

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a power conversion section that converts direct current or alternating current power into high frequency power, a dielectric heating device and an induction heating device operated by the high frequency power of this power conversion section, and the dielectric heating device and the induction heating device. A tank having an endothermic pipe introduced into the heating section of the heating device and a pouring pipe for pouring the liquid in the endothermic pipe into a container placed on the heating section of the induction heating device, The apparatus is characterized in that it includes a control means that can switch and input information to the induction heating apparatus and the induction heating apparatus, and can control the temperature of the heated section when switching to the induction heating apparatus.

(Function) In this invention, the dielectric heating device and the induction heating device are combined, and the power conversion section that obtains the high frequency power is switched and used, so if several individual devices are used, Equipment costs can be significantly reduced compared to
An endothermic pipe can be introduced into the heating section of the dielectric heating device for heating, and it is also equipped with a water tank that allows pouring of hot water from the pouring pipe into the container placed on the induction heating device, so that heating process and heat retention process can be easily performed. This eliminates the need to transfer containers, making it much easier to use.

(Embodiment) Fig. 2 is a perspective view showing the configuration of an embodiment of the present invention.
The figure is a partial sectional view showing its detailed configuration. This device is a combination of a microwave oven as a dielectric heating device, an electromagnetic cooker as an induction heating device, and a coffee maker for heating and keeping warm.
0 and the range door 31 are arranged in front, and the range door 31
A range cavity 34 is arranged inside. Further, the heating coil 17 and top plate 29 that constitute the electromagnetic cooker are arranged above the range cavity 34,
Further, a water tank 32 serving as a coffee maker is arranged on the left side of the range cavity 34. in this case,
A server 28 having a filter 27 is placed on the top plate 29. Further, the water tank 32 has a water inlet 33 on the upper side, one end of a heat absorption pipe 35 installed inside the range cavity 34 is connected to the bottom of this water tank 32, and the other end of the heat absorption pipe 35 is connected to the server 28. The molten metal pouring pipe 26 is connected to the top of the molten metal. A water detector 25 for heating switching control is attached to the lower part of the water tank 32, and a thermistor 24 for output control is attached to the lower part of the top plate 29.

FIG. 1 is a circuit diagram showing the overall configuration of the above-mentioned lining heating device. In the figure, a rectifier circuit 10 is connected to two busbars connected to a power plug 1. Of these, a fuse 2 and a door switch 3a are inserted into one bus bar, and a door switch 3b and a main relay 8 are inserted into the other bus bar. In addition, door switches 3a, 3
A short switch 4 is connected between the load side terminals of b,
A series circuit of an interior light 5, an interior light relay 9, and a fan motor 7 are connected between the load side terminal of the door switch 3a and the load side terminal of the main relay 8. Turntable motors 6 are connected in parallel. next,
A series connection circuit of a choke coil 11 and a smoothing capacitor 12 is connected between the DC terminals of the rectifier circuit 10, and a switching element 14 with a freewheeling diode 15 and a resonant capacitor 13 are connected to the smoothing capacitor 12. Series connected circuits are connected in parallel. A common contact terminal of a switching relay 16 is connected to the interconnection point of the resonant capacitor 13 and the switching cable 14, and a choke coil 11 is connected between one of the switching terminals a and the positive terminal of the smoothing capacitor 12. , the primary winding of a high frequency transformer 18 is connected between the other switching terminal and the negative terminal of the smoothing capacitor 12. A series connection circuit of a high voltage capacitor 19 and a high voltage rectifier 20 forming a voltage doubler rectifier circuit is connected to the secondary winding of the high frequency transformer 18, and a magnetron 21 with a heater connected to the auxiliary winding of the high frequency transformer 18 is connected. It is connected in parallel with the high voltage rectifier 20 with opposite polarity. Also, Fuse 2
A primary winding of a power transformer 22 is connected to the load-side bus of the power transformer 22, and a control circuit 23 is connected to its secondary winding.

The above-mentioned thermistor 24 and water detector 25 are connected to this control circuit 23, and based on the output signals of these, the excitation of the main relay 8, interior light relay 9, and switching relay 16 is controlled, and at the same time, the switching cable It is designed to control 14.

The rectifier circuit 10, choke coil 11, smoothing capacitor 12, resonance capacitor 13, switching cable 14, and freewheel diode 15 constitute the power conversion section of the present invention.

The operation of this embodiment configured as described above will be explained below.

First, connect the power plug 1 to a receptacle of a commercial power source, close the range door 31, and then close the door switches 3a, 3.
b is opened (hereinafter referred to as on), and short switch 4
is released (hereinafter referred to as off). In this state, in order to use it as a microwave oven, when an object to be heated is inserted into the microwave cavity 34 and the microwave heating mode is selected using the operation panel 30, the control circuit 23 excites the main relay 8 and connects the rectifier circuit 10 to the In addition to supplying power supply voltage,
The interior light relay 9 is energized to turn on the interior light 5, and at the same time, the turntable motor 6 is rotated.

At the same time, the control circuit 23 excites the switching relay 16 and switches its contact to the b side, so that the switching element 1
4 is turned on and off. As a result, a high frequency current is supplied to the high frequency transformer 18, and a boosted DC voltage is applied to the magnetron 21, so that microwaves are radiated into the range cavity 34. In this case, the control circuit 23 controls the current flowing through the switching element 14 to generate predetermined microwave power. Thus, microwave cooking is performed.

Next, when used as an electromagnetic cooker, the object to be heated is placed on the top plate 29 for 1tifL. When the electromagnetic cooker mode is selected using the operation panel 30, the control circuit 23 stops the excitation of the switching relay 16. and switch the contact to the a side. This allows the high frequency current to flow through the resonant capacitor 1.
3 and the heating coil 17, an eddy current is generated in the top plate 29, and the well-known electromagnetic: I!
A process is carried out.

Next, when the operation panel 30 is operated to use it as a coffee maker, the control circuit 23 excites the switching relay 16 to set it to microwave heating mode. When water (or liquid) is injected into the water tank 32 from the water inlet 33 in this state, the water detector 25 detects this, and the control circuit 23 excites the main relay 8 to apply a high frequency current to the high frequency transformer 18.

As a result, the water in the heat absorption pipe 35 is heated by the microwave, and the boiled water is poured into the server 28 through the pouring pipe 26.

By continuing this operation, when the water in the water tank 32 runs out, the control circuit 23 switches the contact of the switching relay 16 to the a side based on the output of the water detector 25 to set the mode to the electromagnetic cooking mode. Therefore, the high frequency current that has been supplied to the primary winding of the high frequency transformer 18 is applied to the heating coil 17.

At this time, the control circuit 23 detects the resistance value of the thermistor 24, and the temperature of the top plate 29 becomes the set value. Procedural Amendment (Method) September 3, 1988

Claims (1)

[Claims] 1. A power conversion unit that converts DC or AC power into high-frequency power, a dielectric heating device and an induction heating device that operate with the high-frequency power of this power conversion unit, and a heating unit of the dielectric heating device. a tank having an introduced endothermic pipe and a pouring pipe for pouring the liquid in the endothermic pipe into a container placed on the heating section of the induction heating device; What is claimed is: 1. A composite heating device comprising a control means capable of inputting a signal by switching to the induction heating device and controlling the temperature of a heated portion when switching to the induction heating device. 2. The control means includes a first detection means for detecting that the liquid in the tank has been poured into the container, and a second detection means for detecting the temperature of the heated part of the induction heating device. and switching and inputting the high frequency power from the dielectric heating device to the induction heating device when the hot water obtained by heating the liquid in the tank by the dielectric heating device is finished pouring into the container. , the heated portion is maintained at a predetermined temperature.
Composite heating device as described in section.