JPH0729564Y2 - Straight beam electron tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a straight-beam electron tube for cooling a collector electrode with a cooling liquid.

[Prior Art] FIG. 3 shows an example of a conventional cooling structure for a collector electrode of a straight-beam type electron tube of this type.

In the figure, 1 is a collector electrode, 2 is a coolant inlet, and 3 is a coolant outlet.

The cooling liquid introduced from the inlet 2 flows along the outer peripheral surface of the collector electrode 1 to cool the collector electrode 1, and the outlet 3
Emitted from.

Normally, the inlet 2 and the outlet 3 are provided on the rear side of the collector electrode 1 at positions deviated from the center, as shown in the figure.

[Problems to be solved by the device]

In the conventional structure in which the cooling liquid inlet 2 is provided at a position displaced from the central portion of the bottom surface of the cooling cylinder as described above, the inlet 2
The cooling liquid introduced from is easy to flow to the B part side in FIG.
There was a problem that it was difficult to flow to the A section side, the outer peripheral surface of the A section side was poorly cooled, and the cooling efficiency as a whole was poor.

The present invention has been made in order to solve the above problems, in which the cooling liquid introduced from the inlet 2 is divided in all directions and flows substantially uniformly along the entire outer peripheral surface of the collector electrode 1. The purpose is to provide.

[Means for Solving the Problems]

The straight-beam electron tube of the present invention is a straight-beam electron tube in which a cooling liquid for cooling the collector electrode flows in from the inlet, passes through the flow path provided along the outer peripheral surface of the collector electrode, and flows out from the outlet. In the above, a conical convex portion is provided on the inner surface of the flow passage facing the introduction port, and the distance between the slope of the conical convex portion and the introduction port inner wall of the flow passage facing the slope is defined as The larger the flow resistance of the cooling liquid from the mouth to the outlet, the larger the setting.

〔Example〕

 FIG. 1 shows an embodiment of the present invention.

In the figure, reference numerals 1, 2, and 3 denote the same or corresponding portions as those in FIG. 3, and 11 denotes a conical inclined surface on the outer peripheral surface facing the inlet 2 of the collector electrode 1.

In this embodiment, the entire outer peripheral surface of the bottom of the collector electrode 1 is an inclined surface.

The position of the apex of the inclined surface 11 is displaced from the center line of the introduction port 2, and the inclined surface 11 is slightly inclined.

With the above structure, the cooling liquid is diverted almost uniformly in all directions in accordance with the liquid flow resistances on the A portion side and the B portion side.

FIG. 2 shows another embodiment of the present invention.

In the figure, reference numerals 1,2,3,11 denote parts which are the same as or correspond to the same symbols in FIG.

In this embodiment, a conical object is attached to the outer peripheral surface of the collector electrode 1 facing the inlet 2 to provide a conical inclined surface 11.

The cooling liquid from the inlet 2 is distributed almost uniformly in all directions by the inclined surface 11 and flows substantially evenly on the side outer peripheral surface of the collector electrode 1 to cool the collector electrode 1.

Therefore, the entire outer peripheral surface of the collector electrode 1 is cooled substantially uniformly, and the cooling efficiency is better than that of the conventional one.

[Effect of device]

As described above, according to the present invention, the cooling efficiency of the collector electrode is improved, and the occurrence of defects due to the temperature rise of the collector electrode is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing another embodiment of the present invention, and FIG. 3 is a conventional cooling structure for a collector electrode of a straight beam electron tube of this type. It is explanatory drawing which shows an example. 1 ... Collector electrode, 2 ... Coolant inlet port, 3 ... Coolant outlet port, 11 ... Inclined surface, and the same reference numerals in the drawings indicate the same or corresponding portions.

Claims (1)

[Scope of utility model registration request] 1. A straight beam electron tube in which a cooling liquid for cooling a collector electrode flows in from an inlet, passes through a flow path provided along the outer peripheral surface of the collector electrode, and flows out from an outlet. A conical convex portion is provided on the inner surface of the flow passage that faces the mouth, and the distance between the slope of the conical convex portion and the inner wall of the inlet portion of the flow passage that faces the slope is determined from the inlet to the outlet. The straight-beam electron tube is set to have a larger value as the liquid flow resistance of the cooling liquid increases.