JPS6324636Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a cooling device that cools a high frequency generator, etc. provided in a high frequency heating device.

Conventional cooling devices for cooling high-frequency generators, for example, can be roughly divided into those that use a Sirotskov fan and those that use a propeller fan, but when a Sirotskov fan is used, a housing must be used around the fan. , the cost will be high. Furthermore, even when attempting to cool not only the high frequency generator but also the high voltage transformer that supplies power to the high frequency generator, electronic components, etc., the cooling effect is poor because the cooling air is not diffused.

On the other hand, as shown in FIG. 1, a cooling device in which a propeller fan 9 is attached to the shaft of a motor 10 has to be fixed firmly to the main body 1 because the vibration generated by the rotation of the propeller fan 9 is transmitted to the main body 1 and generates an unpleasant sound. Metal fittings 3
1 and attach the motor 10 to this fixing bracket 31 with screws 32, or as shown in FIG. Although it absorbed vibrations caused by rotation, it had the drawbacks of lacking mechanical strength and being unable to prevent vibrations due to aging.

In addition, when installing a shaded coil type motor to the main body, the fixing metal fittings must be made of a durable material such as aluminum or steel that does not affect the magnetic flux of the motor, which is undesirable and increases the cost. Ta.

The present invention solves the above-mentioned conventional drawbacks, and aims to provide a high-frequency heating device that simplifies the motor mounting device of the cooling device and generates less vibration even when the propeller fan rotates.

In order to achieve the above purpose, the high frequency heating device of the present invention is provided with a propeller fan on the rotating shaft of the motor.
The synthetic resin bobbin that attaches the motor coil and motor core, and the bobbin and bobbin attachment part are integrally molded, and the motor is attached to the main body via this attachment part, reducing the number of parts and assembly man-hours. This has the effect of providing a high-frequency heating device in which less vibration is transmitted to the main body even when the propeller fan rotates.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 3 to 5.

In FIG. 3, reference numeral 1 denotes a main body of the high-frequency heating device, and a door 3 is provided at the opening of a heating chamber 2 provided in the main body 1 so as to be openable and closable. 4 is a sash provided around the door 3. A magnetron 5 is used as an example of a high frequency generator, and the high frequency waves generated by the magnetron 5 are supplied into the heating chamber 2 through a waveguide 6. 7 is magnetron 5
This cooling device cools the magnetron 5 and the high voltage transformer 8 that supplies power to the magnetron 5 in conjunction with the operation of the motor 10 having a propeller fan 9 as shown in FIGS. 4 and 5. , a bobbin 12 made of synthetic resin to which the coils and motor core 11 of this motor 10 are attached, and a mounting part 13 molded integrally with this bobbin 12.The mounting part 13 of the bobbin 12 is attached to the rear wall 14 of the main body 1. It is attached with screw 15.

16 is an intake hole provided in the rear wall 14 of the main body 1, and 17 is an exhaust hole provided in the bottom plate 18. Reference numeral 19 denotes an air guide that guides the air that has cooled the magnetron 5 with the propeller fan 9 into the heating chamber 2.

Note that if there is a problem with the weight of the motor 10 itself, the motor core 11 may be fixed to the mounting portion 13 with screws 20.

The operation of the above configuration will be explained below. When the object to be heated is housed in the heating chamber 2 and the magnetron 5 is operated, the high frequency waves generated by the magnetron 5 are supplied into the heating chamber 2 through the waveguide 6, and the propeller fan 9 of the cooling device 7 is activated. The magnetron 5 is rotated and sucks in cooling air from an intake hole 16 provided in the rear wall 14 of the main body 1, thereby cooling the magnetron 5. The air that has cooled the magnetron 5 is supplied into the heating chamber 2 via an air guide 19.

Also, due to the air diffused by propeller fan 9,
The air that cools the high voltage transformer 8, electrical components, etc., and cools the high voltage transformer 8, etc. is discharged to the outside of the main body 1 from an exhaust hole 17 provided in the bottom plate 18.

Furthermore, according to the mounting configuration of the cooling device of this embodiment,
Since the bobbin 12 to which the motor core 11 and motor coil are attached and the mounting part 13 are integrally molded from a synthetic resin material, and the mounting part 13 is fixed to the rear wall 14 of the main body with screws 15, vibrations caused by the rotation of the propeller fan 9 can be avoided. Since sound absorption is good and no magnetic loss occurs in the motor 10, the driving characteristics of the motor 10 are excellent.

In addition, since the bobbin 12 that constitutes the motor 10 and the mounting portion 13 to which the motor 10 is attached are integrally molded, the number of mounting parts and the number of assembly steps for the cooling device 7 can be significantly reduced, and costs can be reduced. .

Furthermore, since the mounting portion 13 can be configured compactly, the motor 10 can be mounted close to the rear wall 14 of the main body 1 provided with the intake hole 16, and the cooling effect of the motor itself can be improved.

As described above, according to the present invention, the following effects can be obtained.

1 The bobbin to which the motor core and motor coil that make up the motor of the cooling device are attached is integrally molded, and the mounting part of this bobbin is integrally molded, and the motor is fixed to the main body via the mounting part, thereby reducing the number of parts and assembly man-hours. can be reduced, and costs can be reduced.

2. By constructing the bobbin and the bobbin mounting part from a synthetic resin material, the vibration sound caused by the rotation of the propeller fan is well absorbed, and since no magnetic loss occurs in the motor, the drive characteristics are excellent.

3. Since the bobbin mounting portion can be configured compactly, the mounting space for the motor etc. can be reduced, and the high frequency heating device can be provided with easy mounting work. In addition, since the fixtures and the like are compact and space-saving, the space that obstructs the cooling air passage of the fan motor can be reduced, and the cooling performance can be further improved.

[Brief explanation of the drawing]

1 and 2 are side views showing a cooling device of a conventional high-frequency heating device, FIG. 3 is a side sectional view of a high-frequency heating device which is an embodiment of the present invention, and FIG. 4 is a side view showing a cooling device of a conventional high-frequency heating device.
FIG. 5 is a side view of the cooling device shown in the figure, and FIG. 5 is a perspective view showing the bobbin of FIG. 4. 1... Main body, 2... Heating chamber, 5... Magnetron (high frequency generator), 7... Cooling device, 9...
Propeller fan, 10...Motor, 11...Motor core, 12...Bobbin, 13...Mounting section.

Claims (1)

[Scope of utility model registration request] a cooling device having a main body, a heating chamber provided in the main body, a high frequency generator supplying high frequency waves into the heating chamber, a propeller fan for cooling the high frequency generator, and attaching the cooling device to the main body. A high-frequency heating device comprising a mounting part for the cooling device and a bobbin for the cooling device, the bobbin and the mounting part are integrally molded from synthetic resin, and the motor is mounted on the main body via the mounting part.