JPH0278181A - High frequency heating device - Google Patents

Abstract

PURPOSE:To simplify arrangement for an apparatus, and to prevent deterioration of the performance by providing an air guide by means of having a part of another ventilation guide to a cooling fan incorporated into it, wherein a predetermined apparatus is arranged. CONSTITUTION:Cooling wind is sent to an intake fan 7 for cooling by a first air guide 3a. A second air guide 3b is formed having a part of the first air guide 3a incorporated thereinto. An exhaust fan motor 2 is cooled by the air exhausted via the air guide 3b and by an exhaust fan 1. A condenser 5 for the exhaust fan, a socket 8 of a lighting lamp in a heating chamber, and plurality of insulated wire for these two are arranged in the second air guide 3b. These apparatus are cooled in the air guide and the performance is never to deteriorate, with simple fitting work.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-frequency heating device that is equipped with an exhaust fan and heats an object to be heated using high-frequency waves.

In conventional technology-i, electrical components such as exhaust fan motors have a limited operating temperature due to reliability and performance issues, and when the temperature exceeds that temperature, they are forcibly cooled by a self-cooling fan or the like.

This will be explained below with reference to the drawings.

FIG. 3 is an external perspective view showing the entire structure.

Cooling air to an intake fan (not shown) is guided from the upper part of the front surface of the main body by an air guide 3a. Cooling air to the exhaust fan motor 2 is mainly sucked in from the bottom of the main body, passes through the side and top surfaces of the opening 4, and is discharged to the outdoors by the exhaust fan 1. In addition, as shown in Fig. 4, the capacitor 5
The insulated wire 6 and lamp socket 1-8 are housed in a mounting box 9 and mounted in the upper space of the oven 4.

Problem to be Solved by the Invention However, since the opener 4 reaches a high temperature when heating the object to be heated, hot air accumulates inside the mounting box 9, causing the temperature of the exhaust fan capacitor 5, insulated wire 6, and lamp socket 8 to rise. Rise. If this temperature exceeds the operating temperature limit of the capacitor 5, insulated wire 6, and lamp socket 8, it will cause a change in the capacitance of the capacitor 5 and a deterioration of the insulation performance of the insulated wire and lamp socket 8, leading to their destruction. There are challenges.

The present invention solves these conventional problems,
The present invention provides an excellent high-frequency heating device that has a simple configuration and can keep the temperatures of a capacitor 5, an insulated wire 6, and a lamp socket 8 lower than the operating limit temperature.

Means for Solving the Problems The high-frequency heating device of the present invention includes a condenser for the exhaust fan and a socket portion of a lamp for illuminating the interior of the heating chamber inside the second air guide for guiding cooling air to the exhaust fan motor. and multiple insulated wires.

Function: The high-frequency heating device of the present invention stores a capacitor, a lamp socket, and an insulated wire inside a second air guide, and cooling air flows inside the second air guide.
Since the ambient temperature is lower than the space above the heating chamber, it is possible to suppress the temperature rise of the capacitor, lamp socket, and insulated wire, thereby preventing capacitance changes and destruction of the capacitor, and insulation deterioration of the lamp socket and insulated wire. There will be no destruction at all.

Furthermore, the structure is simple because the capacitor and lamp socket can be attached to the second air guide.

EXAMPLE Hereinafter, a high frequency heating device according to an example of the present invention will be explained with reference to the drawings. As shown in FIGS. 1 and 2, the cooling air for cooling the exhaust fan motor 2 is transferred from a part of the first air guide 3a to the second air guide for guiding the cooling air to the intake fan 7. 3b, cools the exhaust fan motor 2, and is discharged outdoors by the exhaust fan 1. The exhaust fan motor 2, the capacitor 5, an insulated wire 6 for guiding power to a lamp illuminating the inside of the heating chamber, the capacitor 5, and the lamp socket 8 are attached inside the second air guide 3b.

In this way, the lamp socket 8 and the insulated wire 6
The capacitor 5 and the capacitor 5 are cooled by the cooling air flowing inside the second near guide 3b, and can suppress temperature rise to a low level.
This prevents insulation deterioration and destruction of the lamp socket 8 and improves quality and reliability.

Effects of the Invention As described above, the high-frequency heating device of the present invention stores the insulated wire and the capacitor inside the second air guide, and suppresses the temperature rise of the lamp socket, the insulated wire, and the capacitor. This prevents capacitance changes and destruction of capacitors and insulation deterioration and destruction of lamp sockets and insulated wires, resulting in improved quality and reliability. Furthermore, the lamp socket and condenser can be attached to the second air guide, so the structure is simple.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is a view taken along arrow A in FIG. 1, FIG. 3 is an external perspective view of a conventional high-frequency heating device, and FIG. The figure is a sectional view of a main part of a conventional high-frequency heating device. ■...Exhaust fan, 2...Exhaust fan motor, 3a, 3b...Air guide, 4...
... Heating chamber, 5 ... Capacitor, 6 ...
・・・Leedsen, 7...Intake fan, 8...
...Lamp socket, 9...Mounting box. Name of agent Patent attorney Shigetaka Awano Haka 1 person 1 - - Non-air pump 2 = Exhaust fudetsu motor 3a, 3b -' - Airs fid 4 - IkX Room 5 - Kosonasosu 6 - Intestinal passage 7 - - - Fumarole Faso 8 - Lamp socket/gamma Fig. 1 Fig. 2 Fig. 3 Fig. 4

Claims (1)

[Claims] A heating chamber for storing and cooking food in the main body, a magnetron for emitting high frequency waves into the heating chamber, a waveguide for guiding the high frequency waves from the magnetron into the heating chamber, and supplying a high voltage to the magnetron. a high-voltage transformer, a cooling fan that cools the magnetron and the high-voltage transformer, an exhaust fan that exhausts smoke, etc. from outside the main body to the outdoors, an exhaust fan motor that rotationally drives the exhaust fan, and a cooling fan that cools the cooling fan. A first air guide that guides air; and a second air guide that guides cooling air from a part of the first air guide to the exhaust fan; A high-frequency heating device configured to house the parts.