JPS63198280A - Quartz tube heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a quartz tube heater which can be used vertically by supporting the inorganic fiber body by holding a red-hot heating wire in the inorganic fiber body.

BACKGROUND OF THE INVENTION Conventionally, this type of quartz tube heater has had a configuration as shown in FIG. In FIG. 3, reference numeral 101 indicates a heater element 101 with an insulating film formed on its surface and a tightly wound heater element, which is housed in a quartz tube 102, and both ends of the quartz tube 1020 are supported by end caps 103. Ta.

Problems to be Solved by the Invention In such a conventional configuration, it takes time for the heater element 101 to become red-hot, electromagnetic noise is generated during the initial energization, and the heater element 101 is tightly wound and the wire Since the surface insulating film is formed to prevent short circuits, the weight of the heater wire increases and the processing cost for forming the surface insulating film is high, resulting in high costs.

The present invention solves these problems, and aims to provide an economical quartz tube heater that can be used vertically, has a quick start-up time, does not generate energization noise, and can be used vertically.

Means to Solve the Problem In order to solve this problem, the present invention inserts an inorganic fiber body into the red-hot heating wire, which has a small mass, and inserts the holding inorganic fiber body between the red-heat wires. A red-hot electric wire is held by a coiled inorganic fiber body.

Function: With this configuration, the pitch between the wires can be maintained constant even when the red-hot heating wires with low mass are used vertically, and the electromagnetic vibration force when energizing is stored in the fiber body, which also reduces the mass. By doing so, it is possible to speed up the rise of red heat.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, 1 is a heater element, after a red-hot heating wire (hereinafter referred to as heating wire) 2 is wound into a spiral shape,
The inorganic fiber body 3 is inserted into the inner diameter side, and then the holding inorganic fiber body 4 is wound spirally between the wire pitches of the heating wire 2, and the heating wire 2 is wrapped around the inorganic fiber body 3 and the holding inorganic fiber body 4. is maintained. A quartz tube 5 covers the heater element 1, and end caps 6 for supporting the inorganic fiber body 3 and the quartz tube 6 are provided at both ends of the quartz tube 50.

In the above configuration, the diameter of the heating wire 2 is reduced to reduce mass, or a band-shaped heating wire is used, and the heat dissipation surface area is the same as that of a conventional tightly wound heating wire. Therefore, after the voltage is applied, the heating wire 2 does not require internal storage of heat due to its small mass, and the heating wire 2 quickly reaches a red-hot stable state. Since the wire temperature of the heating wire 2 when stable red-hot is raised to about 900°C to 1000°C, the tensile strength is reduced to about 4° when it is cold. But without a support, the shape cannot be maintained. The heating wire 2 is supported by an inorganic fiber body 3 and a holding inorganic fiber body 4, and the heating wire 2 is held between each wire pitch, so there is no risk of deformation and short circuit, and the surface of the heating wire 2 There is no need to create an insulating film before energizing.

Furthermore, since the heating wire 2 is held in the inorganic fiber body, the electromagnetic vibration force generated at the initial stage of energization is also absorbed by the fiber body, and the electromagnetic sound does not reach a level that can be heard by the human ear.

Further, the spiral winding of the heating wire 2 does not necessarily have to be circular, and the same effect can be obtained by winding adjacent wires in a twisted positional relationship 6 .

Effects of the Invention As described above, according to the present invention, it is possible to create a quartz tube heater that can be used vertically, has a fast red-hot start-up time, is inexpensive in terms of cost, and does not generate electromagnetic noise at the initial stage of energization. It will be done.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a quartz tube heater according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a heater element portion, and FIG. 3 is a vertical cross-sectional view of a conventional quartz tube heater. 1... Heater element, 2... Red-hot heating wire, 3... Inorganic fiber body, 4... Inorganic fiber body for holding, 5... Quartz tube, 6...End cap. Name of agent: Patent attorney Toshio Nakao and one other person

Claims (1)

[Claims] It consists of a heater element made of a heating wire for red heat, a quartz tube that houses the heater element, and an end cap that is provided at both ends of the quartz tube to support the heater element, and the heater element is spirally wound. An inorganic fiber body is inserted into the heating wire, and another inorganic fiber body for holding is wound from the pitch between the red-hot heating wires, and the red-hot heating wire is held between both inorganic fiber bodies, allowing vertical use. Quartz tube heater.