JPH0428147A - magnetron cooling fins - 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 Industrial Application] The present invention relates to a cooling fin for cooling an anode of a magnetron used in a microwave oven or the like.

[Prior Art] In a magnetron used in a microwave oven, the temperature of the anode increases due to heat generated during use. For this reason, as shown in Japanese Utility Model Application Publication No. 56-78879, the magnetron is provided with cooling fins for cooling the anode.

FIG. 3 shows a conventional magnetron with cooling fins. In the figure, 1 is an anode, 2 is an anode l
3 is a yoke forming an external magnetic circuit, 4 is a cooling fin, and the cooling fin 4 is connected to the anode 1.
and the yoke 3.

In the cooling fins of this magnetron, the anode 1 can be cooled by sending cooling air in a direction perpendicular to the plane of FIG. 3 using a cooling fan (not shown).

Fig. 4 is a plan view showing the cooling fins of another conventional magnetron, Fig. 5 is a front view of the same, and Fig. 6 is a diagram showing the state in which the cooling fins shown in Figs. 4 and 5 are attached to the magnetron. It is. In the figure, 5 is an attachment part to the anode 1, 6 is a thick part provided on the attachment part 5, 7 is a heat sink provided on the thick part 6, and the thick part 6 and the heat sink 7 are the heat dissipation part. It consists of 15.

In the cooling fins of this magnetron, the anode 1 can be cooled by sending cooling air downwards from the plane of the paper in FIG. 5 using a cooling fan (not shown).

FIG. 7 is a plan view showing a cooling fin of another conventional magnetron, and FIG. 8 is a front view of the same. In the figure, 8 is a plate, and this cooling fin is composed of four plates 8.

Reference numeral 9 denotes a mounting portion to the anode l; 10 a heat dissipation portion protruding from the attachment portion 9; 11 a curved protrusion provided on the heat dissipation portion 10; It is formed by making a notch and then making that part curve and protrude.

In the cooling fins of this magnetron, the anode 1 can be cooled by sending cooling air in the vertical direction on the paper of FIG. 8 using a cooling fan (not shown).

[Problem to be solved by the invention]

However, in the magnetron cooling fin shown in Fig. 3, the cooling fin 4 is provided between the anode and the yaw 3, so when the magnetron is made smaller, the cooling fin 4 is also made smaller. , the speed of the cooling air must be increased, which increases the noise.

Furthermore, in the magnetron cooling fins shown in FIGS. 4 and 5, the heat radiation section 15 can be provided outside the yoke 3, so even if the magnetron is made smaller,
There is no need to downsize the heat dissipation section 15, and there is no need to increase the speed of the cooling air, so the noise does not increase. However, since it has the thick portion 6, the manufacturing cost is high.

Furthermore, in the magnetron cooling fins shown in FIGS. 7 and 8, the heat radiation part 10 can be provided outside the yoke 3, so it is similar to the magnetron cooling fins shown in FIGS. 4 and 5. Moreover, the noise does not increase, and since it is composed of four plates 8, the amount of material used is small, so the manufacturing cost is low. but,
Since the outer side of the heat dissipation section 10 is open, cooling air escapes to the outside through the opening of the heat dissipation section IO, resulting in poor cooling efficiency.

This invention was made to solve the above-mentioned problems. Even when the magnetron is made smaller, the noise does not increase, the manufacturing cost is low, and the cooling efficiency is good. The purpose is to provide fins.

[Means for Solving the Problems] In order to achieve this object, in the present invention, a cooling fin for cooling the anode of a magnetron is constructed of a plurality of plates, and includes a mounting portion for the anode and a cooling fin for cooling the anode of the magnetron. A heat dissipation section is provided protruding from the heat dissipation section, the plate of the heat dissipation section is bent into a wave shape, and the tops of the waveform of the plate are brought into contact with each other.

[Effect]

In this magnetron cooling fin, the heat radiation part can be provided outside the yoke, so even when the magnetron is made smaller, there is no need to make the heat radiation part smaller.
In addition, since it is composed of multiple plates, less material is used, and the tops of the corrugated plates are in contact with each other.
Cooling air does not escape from the heat radiation section to the outside.

[Example] Fig. 1 is a plan view showing a cooling fin of a magnetron according to the present invention, and Fig. 2 is a front view thereof.

In the figure, reference numeral 12 denotes a plate made of aluminum with a thickness of 1 mm, and this cooling fin is composed of four plates 12. Reference numeral 13 denotes a mounting portion to the anode 1; 14 a heat dissipation portion protruding from the attachment portion 13;
The plate 12 is fixed between the two by screws using spring washers. Further, the plates 12 of the heat dissipating section 14 are bent into a triangular wave shape, the tops of the triangular waves of the plates 12 are in contact, and the tips of the plates 12 are attached to each other by caulking.

In the cooling fins of this magnetron, the anode 1 can be cooled by sending cooling air in the vertical direction of the paper of FIG. 2 using a cooling fan (not shown).

In such a magnetron cooling fin, the heat radiation part 14 can be provided outside the yoke 3, so even when the magnetron is made smaller, there is no need to make the heat radiation part smaller, so the speed of the cooling air can be increased. Since it does not need to be large, the noise does not increase. Also, 4 boards 1
Since it is composed of 2, the amount of materials used is small,
Manufacturing costs are low. Furthermore, since the tops of the corrugations of the plates 12 are in contact with each other, the cooling air does not escape outward from the heat radiating section 14, resulting in good cooling efficiency.

Furthermore, since the tips of the plates 12 are attached to each other by caulking, the heat dissipating section is unlikely to deform during handling of the magnetron.

In addition, in the above-mentioned example, it was constructed with four plates 12, but it can be constructed with a plurality of plates.

Further, in the above-described embodiment, the plate 12 of the heat dissipation section 14 is bent into a triangular waveform, but it may be bent into a polygonal waveform such as a square waveform, a semicircular waveform, or the like. Furthermore, in the above embodiment, the plate 1
The tips of Plate 2 were attached to each other by caulking, but Plate 1
The two tips may be attached to each other by welding. Further, in the above embodiment, the plate 12 is fixed by screwing, but the plate 12 may be fixed by welding, riveting, etc. Furthermore, in the above embodiment, if the shape of the attachment part 13 is determined so that when the attachment part 13 is attached to the anode 1, a force is applied from the attachment part 13 to the anode 1, the anode 1 becomes hot. The fixation of the cooling fins will not loosen even when

[Effects of the Invention] As explained above, in the magnetron cooling fin according to the present invention, even when the magnetron is made smaller, there is no need to make the heat dissipation part smaller, so the speed of the cooling air does not need to be increased. This means that there is no increase in noise, and since the amount of material used is small, manufacturing costs are low.Furthermore, the cooling efficiency is good because the cooling air does not escape outside from the heat dissipation part. . As described above, the effects of this invention are remarkable.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing cooling fins of a magnetron according to the present invention, Fig. 2 is a front view thereof, Fig. 3 is a view showing a magnetron having conventional cooling fins, and Fig. 4 is a view of another conventional magnetron. A plan view showing the cooling fins, FIG. 5 is a front view, FIG. 6 is a diagram showing the cooling fins shown in FIGS. 4 and 5 attached to a magnetron, and FIG. 7 is a diagram showing another conventional magnetron. a top view showing the cooling fins of
FIG. 8 is also a front view. 1...Anode 12...Plate 13...Mounting part 14...Heat dissipation part Figure 14--Ichiko Kaiun Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A cooling fin for cooling the anode of a magnetron, which is composed of a plurality of plates, and includes a mounting portion to the anode and a heat dissipation portion protruding from the mounting portion,
A cooling fin for a magnetron, characterized in that the plate of the heat radiating part is bent into a corrugated shape, and the tops of the corrugations of the plate are in contact with each other.