JPS593886A - Cartridge 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 The present invention relates to a method of manufacturing a cartridge heater. In order to increase the calorific value generated by a cartridge heater, it is natural to lower the resistance value of the heating wire used to allow a large current to flow, but the material of the heating wire and the structure of the cartridge heater in this case are It has to be made large according to the amount. In view of these problems, the present invention provides a cartridge heater that is compact and can generate a large amount of heat. Next, a method for manufacturing a cartridge heater according to the present invention will be explained in detail with reference to drawings of an embodiment.

FIG. 1 is a side sectional view of a conventional cartridge heater. The cartridge heater 1 has a ceramic core 1
It is constructed by winding an electric heating resistance wire 2 into a three-phase coil, and then electrically insulating the heating element from the outer shell metal body 4 with a ceramic material. Electric heating resistance wire 2
Naturally, it was designed so that it would not self-dissolve under high energy during energization. Even if the electric heating resistance wire 2 is wound in a three-phase coil around the ceramic core 1 while keeping the winding spacing and winding it so as not to short circuit the resistor, the strength of the winding as described above will not be achieved during actual energization and use. If it is weak, the thermal expansion of the resistance wire will cause the winding spacing to come into contact and shorten, changing the resistance value and the amount of heat generated, which may impair the stable heat generation state. .

In addition, when creating a high-energy, high-output cartridge heater, the size of a cartridge heater manufactured using normal design standards may be too large due to the space of the heated device to be used, resulting in the manufacture of a specially designed cartridge heater that is expensive. was there. Figures 2 to 5 show the car 1- of the present invention.
It is a figure of one Example by the manufacturing method of a ridge heater.

FIG. 2 is a sectional view of the laminated heating element 5. A male and female connection terminal structure is provided at both ends of the three power supply terminal bars ■■■, and one is placed on the left side like a terminal bar ■, and the terminal bar ■ is placed on the right side like a resistance wire. The shape of the heating element 5 is such that the resistance value capacitance of the left side and right side of the bar ■■■i arranged in a row is arranged evenly and symmetrically, and it is easy to embed it in the ceramic 5 and stack it later. Form symmetrically. FIG. 3 is a schematic diagram of FIG. 2. The shape of the heating element 5 is triangular, and the male side of the heating element 5 is symmetrical so that it can be stacked easily. The female side connects the male 5a with the shape of the terminal bar ■■■ ■b, ■b, ■b and the female 5b with the shape of the ceramic 5 and the heating element interchangeably. Build. FIG. 4 is a sectional view taken along the line AA in FIG. 8. In FIG. 5, an arbitrary number of heating elements 5 shown in FIG. 2 are stacked, the male 5a and female 5b sides are aligned, and the bottom and top of the outer metal body 6 are electrically insulated with a heat-resistant electrical insulator 7.8. Then, complete the cartridge heater 9 by arranging the connecting terminal rods ■, ■, ■ in a row, and evenly distributing the electric resistance heating wires A, B, -C on the left and right sides.
When laminated, the amount of heat generated increases according to the number of laminated layers.

Since the shape of the heating element 5 is bilaterally symmetrical, it is easy to stack it inside the outer shell metal body 6. As described above, according to one embodiment of the method of the present invention, the above-mentioned unstable quality factors caused by the conventional coil winding of the resistance wire 2 can be reduced, and assembly and manufacturing can be facilitated according to the intended heat generation capacity. Moreover, it features a cartridge heater that is small and easy to manufacture, allowing for a large amount of power to be emitted.

[Brief explanation of the drawing]

Fig. 1: A side sectional view of a conventional cartridge heater. FIGS. 2 to 5 are views of an embodiment of the manufacturing method of the present invention. ■...Cartridge heater. ■...Ceramic core. 2... Electric resistance heating wire. 3...Ceramic spacer. 4... Outer shell metal body. Dan...Heating element. 5.
··ceramic. 5a...Male side. 5b...Female side. 6... Outer shell metal body. 7.8...Heat-resistant electrical insulator. Dan... Cartridge heater. ■、■、■・・・Power supply connection terminal bar. ■a, ■a, ■a... Male side of terminal bar. ■b, ■b, ■
b...Terminal bar female side. A, 8% C (4' c 1 blue c) ... Electric heating resistance wire Patent applicant Osamu Sakai - Representative Director of Heko Electric Manufacturing Co., Ltd. - Sai IJu

Claims (1)

[Claims] In an electric heating element with a three-phase connection of heating wires A=B=C, a power supply combination (2) that connects the electric resistance heating wires in parallel in a laminated manner;
The male and female joint ends are configured so that both ends of ■ and ■ can be laminated, and the combined bodies ■■■ are arranged in a row, and on the right side ■-A-■,
■-IC-■, the above-mentioned resistance wires are arranged evenly on the left and right as ■-B-■, ■--C-■ on the left side, and they are embedded in the ceramic to form the entire heating element and the outer shape of the heating element is It is formed into a male-female shape that can be stacked and connected, and is symmetrically formed, and the heating elements are laminated in any number of layers, and the bottom and top of the outer metal body are electrically insulated with heat-resistant electrical insulators. cartridge heater.