JPH0546235Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a high-frequency heating device such as a high-frequency cooker, and particularly relates to an improvement of the cooling structure in the machine room thereof.

(Prior Art) Fig. 4 and Fig. 5 show a conventional high-frequency heating device. An operation panel 3 is provided, and a door 4 is provided at the front of the heating chamber 2.

Inside the machine room 1, as shown in FIGS. 4 and 5, a magnetron 5, a duct 6, a high-voltage transformer 7, and a panel-mounted electrical component 8 are provided, and each of these inside the machine room 1 The parts are a fan motor 9 fixed to the back wall of the machine room 1.
It is designed to be cooled by a cooling fan 10 driven by.

(Problem to be solved by the invention) In the conventional high-frequency heating device, since the fan motor 9 is fixed in the machine room 1, the cooling air from the cooling fan 10 as shown by arrow F in FIG. direction is always constant, making it impossible to cool the inside of the machine room 1 uniformly. Therefore, it is necessary to install each component in the machine room 1 in a position where it is strongly exposed to the cooling air, and there is a problem in that a lot of experimental studies are required to determine the arrangement. There is also the problem that only a portion of the cold air from the cooling fan 10 hits parts that generate a large amount of heat, such as the magnetron 5 and the high-voltage transformer 7, making it impossible to effectively cool them.

This idea was created in view of the current situation,
It is an object of the present invention to provide a high-frequency heating device that can improve the cooling efficiency in a machine room and significantly shorten the time required for experimental studies to determine the arrangement of parts in the machine room.

[Structure of the idea]

(Means for Solving the Problems) The high-frequency heating device of the present invention, as a means to achieve the above-mentioned object, expands the range of air blown by the cooling fan in the machine room by changing the installation angle of the fan motor in the machine room. A fan motor movable device is provided.

(Function) In the high-frequency heating device according to the present invention, the installation angle of the fan motor in the machine room changes by driving the fan motor movable device.

When this mounting angle changes, the direction of air blowing by the cooling fan changes, expanding the air blowing range and improving the cooling efficiency in the machine room. In addition, a sufficient amount of air can be blown to important heat-generating components such as high-voltage transformers and magnetrons, so the amount of heat generated by them can be suppressed. In addition, since the flow of cooling air becomes smoother, the time spent on experimental studies to determine the placement of parts, etc. can be reduced.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

1 and 2 show the internal structure of a machine room of a high-frequency heating device, and in the figures, reference numeral 1 denotes a machine room having an operation panel 3 on the front side. As shown in FIGS. 1 and 2, a magnetron 5, a duct 6, a high-voltage transformer 7, and a panel-mounted electrical component 8 are arranged in the machine room 1, and these components are arranged as shown in FIGS. It is designed to be cooled by a cooling fan 10 driven by a fan motor 9.

As shown in FIGS. 1 and 2, the fan motor 9 is attached to the upper end of a fan support stand 11 erected in the machine room 1 via a fulcrum pin 12 so as to be able to swing up and down. , this fan motor 9
is driven to swing up and down by the fan motor movable device 13, so that the direction of air blowing by the cooling fan 10 changes from the downward direction indicated by arrow F in FIG. 1 to the upward direction indicated by arrow F in FIG. It's summery.

As shown in FIGS. 1 and 2, the fan motor movable device 13 includes a cam drive motor 14 fixed to the fan support base 11, and a fan drive cam rotationally driven by the cam drive motor 14. 15, and a projection 9a is provided on the lower surface of the fan motor 9, with which the cam surface of the fan driving cam 15 slides.

FIG. 3 shows an electric circuit diagram in which the fan motor 9 and the cam drive motor 14 are connected. Both the motors 9 and 14 are connected in parallel together with a timer 16 and a lamp 17, Power is supplied when the door switch 19 and timer switch 20 are closed.

Note that in FIG. 3, reference numeral 7 indicates a high voltage transformer.

Next, the operation of this embodiment will be explained.

When the switches 18, 19, and 20 shown in FIG. 3 are closed to start the high-frequency heating device, the fan motor 9 and the cam drive motor 14 are driven.

When the fan motor 9 is driven, the cooling fan 10
rotates, and cooling air is distributed to each component in the machine room 1. Further, when the cam drive motor 14 is driven, the fan drive cam 15 rotates, and the fan motor 9
is driven to swing up and down about the fulcrum pin 12.

As a result, the air blowing direction of the cooling fan 10 changes periodically from the downward direction shown by arrow F in FIG. 1 to the upward direction shown by arrow F in FIG.
The inside of the machine room 1 is uniformly cooled.

As a result, the cooling air is distributed throughout the machine room 1, so that the electrical components in the machine room 1 are sufficiently cooled, and there is a margin for the temperature standard. In addition, sufficient cooling air can be sent to important heat-generating components such as the magnetron 5 and the high-voltage transformer 7 to suppress the amount of heat generated, thereby making it possible to meet temperature standards. Furthermore, since the cooling air flows smoothly inside the machine room 1, it is possible to reduce the time spent on experimental studies to determine the arrangement of parts, etc.

In addition, in the embodiment, the cooling fan 10
The fan motor movable device 13 that expands the air blowing range has been described as being composed of the cam drive motor 14 and the fan drive cam 15. Fan motor 9 using force
It is also possible to use one that has a structure that allows it to oscillate.

[Effect of idea]

As explained above, the present invention is equipped with a fan motor movable device in the machine room that changes the installation angle of the fan motor in the machine room to expand the range of air blown by the cooling fan, thereby improving the cooling efficiency in the machine room. In addition, the time required for experimental studies to determine the arrangement of parts in the machine room, etc. can be greatly reduced.

[Brief explanation of the drawing]

1 and 2 are block diagrams of the machine room of a high-frequency heating device showing an embodiment of the present invention, FIG. 3 is an electric circuit diagram of the high-frequency heating device incorporating a cam drive motor, and FIG. FIG. 5 is a perspective view showing a conventional high-frequency heating device with the outer cover removed, and FIG. 5 is a right side view of FIG. 4. 1... Machine room, 5... Magnetron, 7... High voltage transformer, 8... Panel mounted electrical parts, 9...
Fan motor, 10... Cooling fan, 11... Fan support base, 12... Fulcrum pin, 13... Fan motor moving device, 14... Cam drive motor, 1
5...Fan drive cam.

Claims (1)

[Scope of utility model registration request] In a high-frequency heating device in which a fan motor is installed in a machine room and the machine room is cooled by a cooling fan driven by the fan motor, air is blown into the machine room by the cooling fan by changing the installation angle of the fan motor in the machine room. A high-frequency heating device characterized by being equipped with a fan motor movable device that expands the range.