JPH04181685A - High-frequency heating device - Google Patents

Abstract

PURPOSE:To sufficiently cool a magnetron and high-voltage feed parts with a simple structure by providing a cooling air guide covering a half on the magnetron side of a propeller fan and the first and second air regulators integrated with it. CONSTITUTION:The cooling air from a propeller fan 5 is guided by a guide 8 toward a magnetron 3, the flow of the cooling air is regulated immediately before the magnetron 3 from the guide 8 by the regulating action of the first air regulator 11 parallel with a radiating fin 9, and the cooling air is smoothly guided along the fin 9 to thoroughly cool the magnetron 3. The second air regulator 12 is molded on the high-voltage transformer side of the guide 8, the remaining cooling air from the fan 5 is smoothly guided toward the high- voltage transformer 4 below to thoroughly cool it. The guide 8 and the air regulators 11, 12 are integrally molded with each other, and the structure can be made very simple.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a high-frequency heating device that cools high-voltage supply components such as a magnetron and a high-voltage transformer using cooling air from a propeller fan.

(b) Conventional technology In the conventional high-frequency heating device disclosed in Japanese Patent Application Laid-Open No. 2-75191, etc., the magnetron and the high-voltage transformer are cooled in parallel by cooling air from a propeller fan, but each of them is not satisfied. cannot be cooled down.

(c) Problems to be Solved by the Invention The present invention aims to enable a magnetron and high voltage supply parts such as a high voltage transformer to be satisfactorily cooled by cooling air from a propeller fan.

(d) Means for Solving the Problems The high-frequency heating device of the present invention includes a magnetron that oscillates microwaves, a high-voltage supply component that supplies high voltage to the magnetron, and a parallel connection to the magnetron and the high-voltage supply component. a propeller fan that supplies cooling air to the magnetron; a cooling air guide that covers half of the magnetron side path of the propeller fan and guides the cooling air from the propeller fan to the magnetron; a first air regulating body located parallel to the radiation fins; and a first air regulating body integrally molded with the cooling air guide and located on the high voltage supply component side to smooth the flow of cooling air supplied to the high voltage supply component. It consists of two air conditioning bodies.

(e) Operation Cooling air from the propeller fan is efficiently directed to the magnetron by being guided by a cooling air guide that covers half of the 7-danetron side path of the propeller fan. Furthermore, the cooling air directed toward the magnetron is rectified by the first air regulating body parallel to the radiation fins of the magnetron, and flows smoothly along the radiation fins. Therefore, the magnetron is sufficiently cooled.

Further, due to the rectifying action of the second air regulating body, the cooling air from the propeller fan is smoothly directed toward the high voltage supply components, and the high voltage supply components are sufficiently cooled.

In this way, the cooling air guide and the first and second air regulating bodies, which are provided to sufficiently cool the 7-Danetron and the high voltage supply components, are integral with each other, so the structure is not complicated.

(f) Example The drawings show the structure of a high-frequency heating device according to an embodiment of the present invention.

To explain the structure of the electrical equipment room 2, which is located in parallel with a heating chamber (not shown) in the device main body 1, there is a magnetron 3 that oscillates microwaves supplied into the heating chamber, and a high voltage applied to this magnetron. High voltage supply components, ie, high voltage transformers 4, are fixed at upper and lower positions, respectively. These magnetron 3 and high-voltage transformer 4 generate heat during microwave heating, so they must be cooled. For this reason,
A propeller fan 5 is installed behind the magnetron 3 and high-voltage transformer 4 to supply cooling air to them in parallel. This propeller fan 5 is driven by a motor 6. The intake side and the exhaust side of the propeller fan 5 are separated by a partition plate 7 to prevent the cooling air from the exhaust side from undesirably going around to the intake side.

A cooling air guide 8 made of resin is provided to cover the magnetron side half of the propeller fan 5. Since this cooling air guide 8 covers half of the propeller fan 5, it efficiently guides a considerable amount of cooling air to the radiation fins 9, 9, . . . of the magnetron 3.

Further, with particular reference to FIG. 2, the propeller fan 5
rotates clockwise toward the magnetron 3, and in this case, the cooling air from the propeller fan 5 is guided by the guide 8 and toward the magnetron 3 while rotating in the same clockwise direction. In view of this, a triangular air regulating body 1° is integrally molded on the left side of the guide 8, and an air regulating plate (first air regulating body) 11 is integrally molded in parallel to the radiation fin 9 on the right end. There is. In this case, the flow of the cooling air just before it reaches the magnetron 3 from the guide 8 is adjusted by the rectifying action of the air regulating body 1o, and the cooling air thus arranged is distributed to each It flows smoothly along the radiation fins 9.9... Therefore, the magnetron 3 is sufficiently cooled.

In addition, another air conditioning plate (
A second wind regulating body) 12 is integrally molded. In this case, due to the rectifying action of the air baffle plate 12, the remaining cooling air from the propeller fan 5 smoothly flows toward the high voltage transformer 4 below. Thereby, the high voltage transformer 4 is also sufficiently cooled.

And like this, magnetron 3 and high voltage transformer 4
Cooling air guide 8 provided to achieve sufficient cooling of
The air regulating body 10 and the air regulating plates 11 and 12 are integral with each other, so the structure is not complicated and is extremely simple.

(G) Effects of the Invention According to the present invention, a practical high-frequency heating device has a simple structure and can satisfactorily cool a magnetron and high-voltage supply parts such as a high-voltage transformer using cooling air from a propeller fan. can be provided.

[Brief explanation of drawings]

FIG. 1 is a right side cross-sectional view of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the main parts thereof viewed from the rear. 3... Magnetron, 4... High voltage transformer, 5...
・Propeller fan, 8... Cooling air guide, 9... Radiation fin, 11... Air regulating plate (first air regulating body), 12...
・Another wind regulating plate (second wind regulating body).

Claims (1)

[Claims] (1) A magnetron that oscillates microwaves, a high voltage supply component that supplies high voltage to this magnetron, a propeller fan that supplies cooling air to these magnetrons and high voltage supply components in parallel, and a magnetron for this propeller fan. a cooling air guide that covers half of the side passage and guides the cooling air from the propeller fan to the magnetron; a first air regulating body that is integrally formed with the cooling air guide and located parallel to the radiation fins of the magnetron; A high-frequency heating device comprising a second air regulating body integrally molded with a wind guide, located on the high voltage supply component side, and smoothing the flow of cooling air supplied to the high voltage supply component.