JP2000150135A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater capable of raising a temperature to a designated level in a short time and reducing energy loss. SOLUTION: This heater is equipped with a magnetron 1 to supply a microwave as heating energy by oscillating the microwave, a heating element holding member 2 of an insulating material to hold the heating element 3 heated by irradiation of the microwave oscillated from the magnetron 1, and the heating element 3 of a reactive metal film tightly formed into a film on at least one surface side of the heating element holding member 2. Thereby, the temperature can be raised up to a designated level in a short time by utilizing the microwave oscillated from the magnetron 1 and energy loss can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating heater serving as a heat source for heating various objects. The present invention relates to a heater capable of heating and reducing energy loss.

[0002]

2. Description of the Related Art A conventional heating heater supplies an electric current to a heating wire such as a nichrome wire, converts the supplied electric energy into heat energy by the heating wire and generates heat. An electric heater for heating was mainly used.

[0003]

However, such a conventional electric heater is of a heating type using resistance heating and utilizes Joule heat, so that it takes time to raise the temperature to a predetermined temperature. Met. That is, Joule's law states that the amount of Joule heat flowing out of a wire kept at a constant temperature within a certain time due to a steady current flowing in the wire is proportional to the square of the intensity of the current I and the resistance R of the wire. According to the equation, the amount of heat Q flowing out in a unit time is Q =
Since it is constant at I ² R, it takes time for a unit time × n to raise the temperature to the predetermined temperature. Further, when the heating wire generates heat, it may be consumed by energy (for example, light) other than heat energy, and there is a certain amount of energy loss.

[0004] Therefore, an object of the present invention is to provide a heating heater which can address such a problem and can raise the temperature to a predetermined temperature in a short time and can reduce energy loss.

[0005]

In order to achieve the above object, a heating heater according to the present invention comprises a magnetron which oscillates microwaves and supplies the microwaves as heat energy, and a microwave oscillated from the magnetrons. A heating element holding member made of an insulator holding a heating element heated by being irradiated with a heating element, and a heating element made of a reaction metal film formed in close contact with a thin film on at least one surface side of the heating element holding member. It consists of

The heating element holding member is formed in a rod-like member having an arbitrary cross-section, and a hollow hole is formed in a longitudinal central axis of the rod-like member. May be inserted.

Further, the heating element holding member may be formed in a plate-like member having an arbitrary planar shape, and one side of the plate-like member may be positioned so that a microwave transmission portion of a magnetron faces the armpit. Good.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory sectional view showing an embodiment of a heating heater according to the present invention. This heater serves as a heat source for heating various objects.
As shown in the figure, the magnetron 1 and the heating element holding member 2
And a heating element 3.

The magnetron 1 oscillates microwaves and supplies the microwaves as heat energy to a heating element 3 described later. The magnetron 1 is composed of a conventionally known water-cooled or air-cooled magnetron for a microwave oven, for example. For example, a radio wave having a wavelength of about 12 cm is oscillated at 2.45 GHz. The output may be appropriately selected, for example, from about 500 W to 1 kW according to the temperature generated in the heating element 3. At one end of the magnetron 1, a waveguide 4 serving as a microwave transmission unit for transmitting the internally oscillated microwave to the outside protrudes.

The waveguide 4 of the magnetron 1 is inserted into one end of the heating element holding member 2. The heating element holding member 2 holds the heating element 3 which is heated by being irradiated with the microwave oscillated from the magnetron 1.
For example, a transparent or opaque heat-resistant material is made of an insulator such as lath, ceramic, or enamel, and is formed into a rod-shaped member having an arbitrary cross-section such as a circle or a polygon. A hole 5 is formed. The waveguide 4 of the magnetron 1 is inserted into one end of the hollow hole 5.

On at least one side of the heating element holding member 2, a thin film heating element 3 is formed in close contact. The heating element 3 is heated by being irradiated with microwaves oscillated from the magnetron 1 and is a component having a high function of converting heat by microwave energy of microwaves of 2.45 GHz, for example, a reaction mainly composed of tin oxide. It is made of a metal film, and is formed in close contact with a thin film over the entire outer peripheral surface of the heating element holding member 2 by a process such as a vacuum deposition method, a sputtering method, a CVD method, a roll coating, a spray coating, a transfer, and a thermal spraying.

At both ends of the heating element holding member 2, end plates 6 and 6 made of a reaction metal of the same material as the heating element 3 are provided to close both ends of the hollow hole 5. The waveguide 4 of the magnetron 1 is inserted into the inside of the hollow hole 5 through the end face plate 6 on one end side, so that the microwave oscillated from the magnetron 1 can be inserted into the inside of the hollow hole 5. Is transmitted to In such a state, the embodiment shown in FIG. 1 is configured as a rod-shaped heater as a whole. Although not shown, the magnetron 1 is supplied with required power by a power cord or a plug.

In the heating heater configured as described above, the microwave oscillated by driving the magnetron 1 is transmitted to the outside by the waveguide 4. The waveguide 4 penetrates through the end face plate 6 on one end side and is inserted into the hollow hole 5 of the heating element holding member 2, so that the oscillated microwaves pass through the inside of the hollow hole 5. And is irradiated over the entire length in the hollow hole 5. The irradiated microwave passes through the insulator of the heating element holding member 2 and impinges on the heating element 3 formed in close contact with the outer peripheral surface in a thin film shape.

Then, the heat generating element 3 performs heat conversion by microwave radio wave energy of, for example, 2.45 GHz. That is, the molecules in the heating element 3 vibrate 2.45 billion times per second due to the microwave oscillating electric field of 2.45 GHz, generating frictional heat between the molecules, converting them into heat, and heating. By this heating action, the heating element 3 is heated to a predetermined temperature. Since the heating temperature is raised by generating frictional heat between molecules by an oscillating electric field of a microwave, the heating is performed in an extremely short time as compared with conventional heating using Joule heat. Also, when converting heat with microwave radio wave energy, it is not consumed by other energy,
Energy loss can be reduced.

FIG. 2 is an explanatory sectional view showing another embodiment of the present invention. In this embodiment, the heating element holding member 2 is formed as a plate member having an arbitrary planar shape, and the waveguide 4 of the magnetron 1 is positioned so that one side surface of the plate member faces alligator. . In FIG. 2, the heating element holding member 2 is formed, for example, in the shape of a rectangular flat plate, and a heating element 3 is formed in close contact with the outer surface of the heating element holding member 2 in a thin film shape. Is formed by combining casing members 7, 8, 9 in a box shape on the back side, and penetrating the distal end portion of the waveguide 4 of the magnetron 1 into the central portion of the casing member 9 on the back side to be inserted into the internal space. I have. In addition, a plate-shaped heater is constituted as a whole.

Although not shown in FIG. 2,
The magnetron 1 is supplied with required power by a power cord or a plug. In FIG. 2, the heating element holding member 2 is not limited to a rectangular flat plate, but may be, for example, an arbitrary planar shape, a curved plate shape, or a spherical plate shape.

The heating heater according to the present invention configured and operated as described above is applied as a heating source in industrial machines of all departments and a consumer heating source such as a stove and a dryer.

[0018]

The present invention has been configured as described above.
A magnetron that oscillates microwaves and supplies the microwaves as heat energy, a heating element holding member made of an insulator that holds a heating element that is heated by being irradiated with microwaves oscillated from the magnetron; A heating element comprising a reaction metal film formed in close contact with a thin film on at least one surface side of the holding member, by using microwaves oscillated from a magnetron as heating energy, to a predetermined temperature in a short time. The temperature can be increased and the energy loss can be reduced.

That is, the heating by the heating heater of the present invention is performed by generating frictional heat between molecules by an oscillating electric field of a microwave, so that the heating is performed in an extremely short time as compared with the conventional heating using Joule heat. It can be carried out. Also, when heat is converted by microwave radio wave energy, it is not consumed by other energy, and energy loss can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of a heating heater according to the present invention.

FIG. 2 is an explanatory sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Magnetron 2 ... Heating element holding member 3 ... Heating element 4 ... Waveguide 5 ... Hollow hole 6 ... End face plate 7, 8, 9 ... Casing member

Claims (3)

[Claims] A heating element holding member comprising: a magnetron that oscillates microwaves and supplies the microwaves as heat energy; and an insulator that holds a heating element that is heated by being irradiated with the microwaves oscillated from the magnetrons. And a heating element comprising a reaction metal film formed in close contact with a thin film on at least one side of the heating element holding member. 2. The heating element holding member is formed in a rod-like member having an arbitrary cross-section, and a hollow hole is formed in a longitudinal central axis of the rod-like member. 2. The heating heater according to claim 1, wherein the microwave transmission unit is inserted. 3. The heating element holding member is formed in a plate-like member having an arbitrary planar shape, and one side of the plate-like member has a microwave transmission portion of a magnetron positioned opposite thereto. The heater for heating according to claim 1, wherein