JPS63193486A - 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, a heater element 101 with an insulating film formed on its surface and tightly wound heater element 1o1 is housed in a quartz tube 102.
Both ends of a quartz tube 102 were supported by end caps 103.

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 at the initial stage of energization, and the heater element 1o1 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 processing costs are required to form the surface insulating film, resulting in high costs.

The present invention is intended to solve 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 for Solving In order to solve this problem, the present invention inserts an inorganic fiber body into a red-hot heating wire with a small mass, deforms it into a flat shape, and then wraps a holding inorganic fiber body around it. It holds a red-hot heating wire.

Function: With this configuration, the red-hot heating wire, which has a small mass, is held by both the inorganic fiber body and the holding inorganic fiber body.
It is possible to obtain a quartz tube heater that has a quick rise time, does not generate energization noise, and can be used vertically.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, reference numeral 1 denotes a heater element in which a red-hot heating wire (hereinafter referred to as heating wire) 2 is wound into a spiral shape, and an inorganic fiber body 3 is inserted into the inner diameter of the heating wire 2 to deform the heating wire 2 into a flat shape. A holding inorganic fiber body 4 is spirally wound around a heating wire 2 which is deformed into a flat shape. A quartz tube 5 covers the heater element 1, and an inorganic fiber body 3 and a quartz tube 6 are provided at both ends of the quartz tube 6.
An end cap 6 is provided to support the.

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 power is applied, there is no need for internal storage of heat due to the small mass of the heating wire 2.
quickly reaches a red-hot stable state ◎The wire temperature of the heating wire 2 when it is red-hot stable is raised to about 900°C to 1000°C, so the tensile strength is reduced to about ↓ 6 when it is cold, and the light mass Even the heating wire 2 cannot maintain its shape without a support. The support of the heating wire 2 is an inorganic fiber body 3 and a holding inorganic fiber body 4, and the heating wire 2 is plastically deformed into a flat shape when cold, and then the holding inorganic fiber body 4 is spirally formed into an inorganic fiber body. 3 and insert heating wire 2 between them. Therefore, the heating wire 2 is held by the inorganic fiber body 3 and the holding inorganic fiber body 4 between the wire pitches, there is no risk of deformation and short circuit, and there is no need to form an insulating coating on the surface of the heating wire 2. Further, since the heating wire 2 is held in the 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 holding inorganic fiber body 4 does not necessarily need to be wound at each line pitch of the electric heating M2, and the same effect can be obtained even if it is wound at every slight pinch.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, the heating wire is supported by an inorganic or fibrous material, and the pitch interval of the heating wire can be maintained at a predetermined interval, so that the red heat rise time is reduced. It is possible to provide a quartz tube heater that can be used vertically, is fast, inexpensive, and does not generate electromagnetic noise during the initial stage of energization.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a quartz tube heater according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the heater element, and FIG.
The figure is a longitudinal 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 1 other person
2 Figure 3

Claims (1)

[Claims] The heater element consists of a heating wire made of a red-hot heating wire, a quartz tube that houses the heater element, and an end cap provided at both ends of the quartz tube to support the heater element. A quartz tube heater in which an inorganic fiber body is inserted into a heating wire, deformed into a flat shape, and then wrapped with a holding inorganic fiber body to hold a red-hot heating wire.