JPH0145111Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a high-frequency heating cooking device used, for example, for cooking food.

[Technical background of the invention]

In this type of high-frequency heating cooking device, a high-pressure condenser and fan motor are attached to the rear plate of the machine room formed on the side of the oven, and the air that enters through the intake port provided on the rear plate is directly applied to the high-pressure condenser and magnetron. This cools the high-voltage condenser and magnetron.

[Problems with background technology]

However, in the above-mentioned type of high-frequency heating cooking device, the high-pressure condenser is placed on the rear plate, which has a limited area, so there is a limit to the size of the intake port formed on the rear plate, and the area where air can enter is small. High-pressure parts installed in the machine room cannot be effectively cooled.

Therefore, a technical measure was proposed in which a high-voltage condenser was installed in the extension of the oven top plate and the air intake port was enlarged so that sufficient air could enter the machine room. The problem is that the heat from the corrugated tube and the heat inside the oven is transferred to the extension, making it impossible to cool the high-voltage condenser.

[Purpose of invention]

This idea was made in view of the above points,
An object of the present invention is to provide a high-frequency cooking device in which the area of an air intake port formed in a rear plate is increased to effectively cool a high-pressure condenser and a rectifier provided in a machine room.

[Summary of the idea]

The present invention provides an extension extending from the oven top plate to the machine room, forms a capacitor mounting part surrounded by a plurality of openings in the part of this extension that is hit by the air flow from the fan motor, and In addition to installing a high-voltage capacitor in the mounting part, a rectifier connected to this high-voltage capacitor is placed so as to bridge the above opening, reducing heat conduction from the waveguide and reducing the insulation distance between the high-voltage capacitor and the sheet metal. This is a high frequency heating cooking device designed to ensure the following.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an oven disposed inside the outer body, and the oven 1 has a magnetron 2 on the side, a magnetron 2 on the top, and an opening (not shown) provided in the oven top plate. A connecting waveguide 3 is provided respectively. In addition, a high voltage transformer 5 is installed in the machine room 4 located on the side of the oven 1.
An intake port 7 and a fan motor 8 are provided on the rear plate 6 of the machine room.

On the other hand, the top plate 1a of the oven 1 is extended to the machine room 4, and a capacitor mounting portion 10 is formed at a portion of the extended portion 9 corresponding to the air flow path led from the fan motor 8 to the magnetron 2. A plurality of openings 11, 11...12 are provided in a substantially U-shape. A high voltage capacitor 14 is fixed to the capacitor mounting portion 10 via a fixing band 13.
A rectifier 15 connected to the opening 12 is provided directly above the opening 12 so as to bridge the opening 12.

Next, the action will be explained.

The air led from the intake port 7 to the machine room 4 is forced into a flow by the fan motor 8 and flows toward the magnetron 2, cooling the magnetron 2.
A part of the cooling flow flows through the opening 11 provided in the extension part 9,
12 through a high voltage capacitor 14 and a rectifier 15
will be directly cooled.

On the other hand, since the opening 11 provided in the extending portion 9 has the effect of reducing heat transfer from the waveguide 3, the cooling effect of the high-voltage condenser 14 is not impaired by this heat transfer.

Furthermore, since the distance A between the high voltage capacitor and the sheet metal portion can be appropriately set, the insulation distance of the high voltage capacitor can be secured.

[Effect of idea]

As described above, according to the present invention, since the area of the intake port can be set large, the high-voltage parts installed in the machine room can be efficiently cooled, and the wire diameter of the high-voltage transformer can therefore be made thinner. This makes it possible to reduce costs, secure the insulation distance of the high-voltage capacitor, and further ensure safety.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the main parts of the high-frequency heating cooking apparatus according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a diagram showing a high-voltage condenser mounting portion. 1... Oven, 2... Magnetron, 3...
Waveguide, 4... Machine room, 8... Fan motor, 1
0... Capacitor mounting part, 11, 12... Opening,
14... High voltage capacitor, 15... Rectifier.

Claims (1)

[Scope of utility model registration request] The oven top plate is extended to the machine room formed on the side of the oven, and a plurality of openings are provided in the part of this extension that corresponds to the air flow path coming out of the fan motor to form a capacitor mounting part. 1. A high-frequency heating and cooking device, characterized in that a high-voltage capacitor is disposed in the opening, and a rectifier connected to the high-voltage capacitor is positioned so as to bridge the opening.