JPH0632272B2 - Infrared heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to an infrared heater, and more particularly, to an infrared heater in which a heating element itself that directly receives electric energy emits infrared rays.

<Prior Art> Conventionally, as shown in FIG. 5, an infrared heater is constituted by surrounding a current carrying body 11 such as a nichrome wire with a ceramic mass 12 that emits infrared rays when heat is generated (for example,
See Japanese Patent Application Laid-Open No. 61-176316. ).

<Problems to be Solved by the Invention> However, in this infrared heater, since the ceramics are heated by the current-carrying body and generate heat to radiate infrared rays, relatively long time is required from the start of power supply to the current-carrying body to the infrared radiation. There was a problem of causing a large time delay.

In view of the above problems, the present invention has a main object to shorten the time from the start of operation to the infrared radiation.

Another object of the present invention is to provide an infrared heater in which fish oil is unlikely to adhere to the current-carrying part when it is used as a commercial fish grill.

<Means for Solving the Problem> In order to solve this problem, the infrared heater according to the present invention has a conductor layer that emits infrared rays when energized, formed on an insulating substrate surface, and the insulating substrate surface is partially It is characterized in that it projects in a plurality of stages in the vertical direction along the horizontal direction, and the current-carrying layer is formed in a recess formed between the projecting portions.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 (A) and 1 (B) show the first embodiment, and FIGS. 2 to 4 show other embodiments. Each embodiment mainly emits far infrared rays used as a commercial fish grill. It is an infrared heater.

In the infrared heater 1 of the first embodiment shown in FIGS. 1 (A) and 1 (B), an insulator layer 3 is formed by attaching ceramics as an insulator to one surface of a base plate 2 such as an iron plate by thermal spraying.
Are formed. The insulator layer 3 has a protrusion 3A and a recess 3B. The protruding portion 3A is formed in a plurality of stages in the vertical direction along the horizontal direction, while the concave portion 3B is formed.
Is formed by the protrusion 3A. In the concave portion 3B,
An electric conductor that radiates infrared rays, such as iron sand or silicon carbide, is attached by plasma spraying or the like to form the electric conductor layer 4. Although not shown, the ends of the lead wires are connected to the current-carrying layer 4 so that power is supplied from a power source (not shown).

In the infrared heater 1, when the power is turned on and a current flows through the current-carrying layer 4, the current-carrying layer 4 generates heat and infrared rays are emitted from the current-carrying layer 4 itself.

Explaining an example of a specific mode when the infrared heater 1 is used as a commercial fish grill, two infrared heaters 1 are used, and the two heaters 1 are appropriately spaced so that their electric conductor layers 4 face each other. Arrange it in advance and hang the fish between both heaters 1. When the fish is grilled, the proportion of the oil of the fish that adheres to the current-carrying body layer 4 is small due to the presence of the protrusion 3A, so that the current-carrying body layer 4 can be protected.

The infrared heater 1 of the second embodiment shown in FIG. 2 is obtained by coating the surface of the electric conductor layer 4 of the infrared heater 1 of the first embodiment with a thin ceramic layer 5 for emitting infrared rays by thermal spraying or the like. The ceramic layer 5 protects the electric conductor layer 4.

The infrared heater 1 according to the third embodiment shown in FIG. 3 is, for example, an electric conductor layer 4 above the infrared heater 1 according to the first embodiment.
And the surface of the lower current-carrying layer 4, for example, are separately coated by spraying or the like with a plurality of different thin ceramic layers 51 and 52 that emit infrared rays having different wavelengths.

According to the third embodiment, for example, the wavelengths of infrared rays radiated in the upper part and the lower part are different. Therefore, in addition to the effect of the second embodiment, the type of fish is changed between the upper part and the lower part to change the fish If hanging, there is also an effect that it is possible to obtain a baking condition suitable for the type of fish.

In the infrared heater 1 of the fourth embodiment shown in FIG. 4, a part of the surface of the electric conductor layer 4 of the infrared heater 1 of the first embodiment is coated with a thin ceramic layer 5 for emitting infrared rays by thermal spraying or the like. And has the same unique effect as the first and second embodiments.

In addition, although the infrared rays are radiated from only one surface in the first to fourth embodiments, the infrared rays having the same wavelength or different wavelengths may be radiated from both surfaces.

<Operations and Effects of the Invention> As described above, according to the present invention, the infrared rays are radiated from the current-carrying body itself. Therefore, it is possible to shorten the time required from the start of the current flow to the infrared radiation, and the fish can be swiftly discharged. Can be followed. Further, since the insulator layer is formed of the protrusion and the recess and the conductor layer is formed in the recess, it is difficult for fish oil to adhere to the conductor layer when used as, for example, a fish grill.

[Brief description of drawings]

FIGS. 1 (A) and (B) and FIGS. 2 to 4 are each an embodiment of the present invention, and FIG. 1 (A) is a side sectional view of the first embodiment, and FIG. ) Is a front view of the first embodiment, FIGS. 2 to 4 are side sectional views of other embodiments, and FIG. 5 is a configuration diagram of a conventional example. 1 ... Infrared heater, 3 ... Insulator layer forming insulating base surface, 3A ... Projection part, 3B ... Recessed part, 4 ... Conductor layer, 5 ... Ceramics layer, 51, 52 ... Wavelength A ceramic layer that emits different infrared rays.

Claims (3)

[Claims] 1. An electric conductor layer that emits infrared rays when energized is formed on an insulating base surface, and the insulating base surface partially protrudes vertically in a plurality of steps along the horizontal direction. An infrared heater, wherein the layer is formed in a recess formed between the protrusions. 2. The whole or a part of the surface of the electric conductor layer,
The infrared heater according to claim 1, which is covered with a ceramic layer that emits infrared rays when generating heat. 3. The ceramic layer is composed of a plurality of types of ceramic layers that emit infrared rays having different wavelengths, and the ceramic layers are separately coated on the surface of the electric conductor. Infrared heater described in.