JPS60118039A - Linear motor with cooling device - Google Patents

Abstract

PURPOSE:To directly cool the primary winding of a heat generation source by constructing to pass a heat pipe between the bottom of a slot for the primary winding provided on the primary core and the primary winding. CONSTITUTION:A slot 3 for mounting the primary winding 2 is formed at the primary core 1, and a heat pipe 4 is inserted between the bottom of the slot 3 and the winding 2. The pipe 4 is projected at both sides of the core 1 along the winding 2, and heat sink fins 5 are mounted on the upward bent portions of both ends. With this construction, the primary winding 2 of the heat generation source can be directly cooled, and a linear motor can be efficiently cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a linear motor with a cooling device, and particularly to a linear motor that constitutes a button cooling device using a heat pipe.

(b) Conventional technology and the point in between Since linear motors have a large air gap length, it is necessary to increase the current density in the primary winding in order to achieve a specified thrust.
Usually reaches 5-10A/-. As a result, the amount of heat generated becomes excessive, so conventionally air cooling using a fan has been performed.

However, in the case of such a cooling device.

The fan makes a lot of noise, requires maintenance of the rotating part of the fan, and furthermore, since the fan sucks in rainwater, the insulation performance of the motor may deteriorate when used outdoors.

(C) Means for solving the problem of the middle point In order to solve the problem of the above-mentioned problem, the present invention provides a means for solving the problem of the middle point between the bottom of the slot for the primary winding provided in the primary core and the primary winding. It has a configuration in which a heat pipe is passed through it, and the primary winding, which is the heat source, is directly cooled.

B) Embodiment FIGS. 1 and 2 show the primary core side of a linear motor according to the present invention. A slot 3 for mounting the primary winding 2 is formed in the primary core 1. In this invention, the slot 3 is formed deeper than the conventional one, and the first coil of the slot 3 and the primary winding are connected to each other. heat pipe 4 between wire 2
is inserted.

The heat pipe 4 protrudes from both sides of the primary core 1 along the primary winding 2, and has radiation fins 5 attached to upwardly bent portions at both ends.

FIG. 3 shows the state in which the heat pipe 4 inside the slot 3 and the two-layer primary winding 2 are attached.

(E) Effects In the present invention, as described above, by passing the heat pipe between the bottom of the slot and the primary winding, the heat pipe comes into direct contact with the winding, which is a heating element.

Therefore, the linear motor can be efficiently cooled. In addition, there is no noise, there are no rotating parts, there is no suction of mountain water, etc., and it can solve the problems that depend on the fan during cooling.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the primary core, FIG. 2 is a cross-sectional view of the same assembly as above, and FIG. 3 is an enlarged cross-sectional view of the slot portion. 1...Primary core, 2...Primary winding, 3...Slot, 4...Heat pipe patent Seller: Sumitomo Electric Industries, Ltd. Agent: Kama 1) Text 2 Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A linear motor equipped with a thrower and two primary windings with one primary iron core is equipped with a cooling device that is motivated by passing a heat pipe between the bottom of the slot and the primary winding. Near motor.