Magnetron

Abstract

The invention, which relates to the field of magnetron structure, discloses a magnetron comprising a magnetron heat-dissipating element for dissipating heat from the magnetron. The magnetron heat-dissipating element consists of a central heat-conducting body (1) coating and being in contact with the outer side wall of an anode cylinder (161), a heat transferring plate (2) extending externally fromthe central heat-conducting body (1), and a plurality of cooling fin groups that are arranged on at least one plane of the heat transferring plate (2) vertically and are spaced at intervals. A direct-current air duct is formed corresponding between each two adjacent cooling fin groups. According to the magnetron, while the structure of the magnetron heat-dissipating element and the mounting structures of the magnetron heat-dissipating element and a black ball assembly are simplified to a certain extent, the heat transfer efficiency between the anode cylinder and the magnetron heat-dissipatingelement and inside the magnetron heat-dissipating element are improved, so that the heat radiation efficiency of the magnetron is enhanced.

Description

technical field [0001] The invention relates to the technical field of magnetron structures, in particular to a magnetron. Background technique [0002] Magnetron is a kind of microwave electron tube, which is a reentrant resonant cross-field oscillator, usually used as a high-power microwave generator. Due to the working characteristics of the magnetron itself, even under normal working conditions, the resonant cavity of the magnetron generates a large amount of heat. Therefore, proper cooling is an important condition to ensure the normal operation of the magnetron. When a high-power magnetron is used, its anode needs to be water-cooled to achieve the purpose of temperature control. [0003] For the magnetron used for heating in microwave ovens, because of its low power, forced air cooling is often used for cooling. Specifically, see figure 1 The magnetron structure shown shows the composition and assembly structure of the magnetron in the prior art. In this magnetron ...

AI Technical Summary

Problems solved by technology

[0007] The above scheme can simplify the assembly steps between the heat dissipation component and the black ball component during assembly, but the processing of the heat dissipation component itself becomes more complicated, and more importantly, the sleeve needs to pass through each layer of heat dissipation plate and connect with the heat dissipation Each anode hole on the plate is in close contact with

If the anode hole is processed before the metal plate is bent, the coaxiality of the anode hole on the multi-layer heat sink is limited by the bending process and the error of punching, and these differences may cause the sleeve and the heat sink Poor contact leads to insufficient heat dissipation on the sleeve; if the anode hole is processed after the metal plate is bent, the process of opening the anode hole itself will change the size of the gap between the cooling plates along the axis of the sleeve (The force direction of the punching is the axial direction of the sleeve, which will inevitably cause the metal plate to deform in this direction), and the gap between adjacent cooling plates is the air duct for heat exchange, so this method will also The gap between the affected parts of the heat sink is too small and the heat dissipation effect is lost

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