JPH05106848A - Electronic heater-equipped rf heating device - Google Patents

Abstract

PURPOSE:To prevent oil and water originating from an article to be heated from dropping on the outside of an external frame by providing a protruded constriction part on an external frame bottom part in contact with a flange having protrusions at the lower side of the same, and employing a space be tween a heating chamber bottom surface and the external frame bottom part as a cooking air flow passage. CONSTITUTION:A constriction part 24 is provided on an external frame bottom part located in the vicinity of protrusions 23 on an external frame lower flange 19a, in which constriction part any oil and water droplets 21 interrupted by the protrusions 23 are guided and stored, and is prevented from dropping to the outside. Cooling air formed from a cooking device serving to cool a magnetron 26 is directed in part 28a upwardly of a heating chamber after passage through the magnetron 26. Further, the other of the cooling air takes as an air flow passage and is discharged from a vent outlet 29 located on the upper part of the external frame. Thus, any oil and any water droplets are discharged existent on the external frame outside part and on the external frame bottom constriction part 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency heating device with an electric heating device.

[0002]

2. Description of the Related Art Conventionally, in a high-frequency heating apparatus with an electric heating device, a system in which a sheath heater is provided on the upper surface of a heating chamber and a hot air is circulated in a storage chamber by blowing air from a rear surface of the heating chamber is often used.

A conventional example will be described below with reference to FIG. As shown in FIG. 4, a sheathed heater 2 is provided inside the heating chamber 1, a punching 3 for circulating hot air 9 in the heating chamber is provided on a rear surface 1 a of the heating chamber, and a heating chamber is provided behind the punching 3. A back plate 4 which contacts the rear surface 1a and has a space in the center, a stirring blade 5 for stirring the hot air 9, and a motor 6 for rotating the stirring blade 5 are held, and the back plate 4 covers the outer periphery of the heating chamber 1. An outer frame rear plate 8 that is in contact with the frame 7 and fixed to the rear surface 1a of the heating chamber is provided.

[0004]

However, since hot air 9a containing oil and water vapor generated from the object 11 to be heated is sucked into the vicinity of the stirring blade 5, oil and water droplets 10 adhere to the surface of the back plate 4. It is easy to do, and it will drop from the gap between the heating chamber rear surface 1a and the back plate 4 and accumulate on the outer frame rear plate 8 lower flange 8a, spread laterally due to the inclination of the heating device, and drop outside. There was a problem.

An object of the present invention is to provide a high-frequency heating device with an electric heating device in which oil or water generated from an object to be heated is less likely to drip outside the outer frame.

[0006]

In order to achieve the above-mentioned object, the present invention provides a plurality of spherical projections on the lower flange of the back plate, and the bottom of the outer frame which is in contact with the flange having the projections is provided on the lower side. A convex throttle portion is provided, and the space between the bottom of the heating chamber and the bottom of the outer frame has a cooling structure that serves as a passage for cooling air generated from the cooling device.

[0007]

The high-frequency heating device with an electric heating device of the present invention is provided with a plurality of projections on the lower flange of the back plate so that oil and water dripping from the vicinity of the stirring blade do not spread laterally at the flange. By providing the protrusion of the flange part at the location of the throttle on the bottom of the outer frame, the oil and water that try to spread in the lateral direction are guided to the throttle on the bottom of the outer frame, and the air from the cooling device is used as the bottom of the heating chamber. It is possible to prevent the oil and water from dripping outside the outer frame by making the space between the outer frame bottom parts into a ventilation path and promoting the drying of the oil and water guided by the outer frame bottom squeezing part.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A high frequency heating apparatus with an electric heating device according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a sheathed heater 13 is provided in the upper part of the heating chamber 12 to electrically heat an object 22 to be heated. The heating chamber rear surface 12a has a punching 14 for circulating the hot air 20 in the heating chamber, the rear plate 15 having a space at the center in contact with the heating chamber rear surface 12a behind the punching 14, and a stirring blade for stirring the hot air 20. 16 and a motor 17 for rotating the stirring blade 16, and the back plate 15 is in contact with an outer frame 18 that covers the outer periphery of the heating chamber 12 and the rear surface 12 of the heating chamber 12 is held.
An outer frame rear plate 19 fixed to a is provided. Oil and water vapor generated from the object to be heated 22 are included in the hot air 20 circulating in the refrigerator and adhere to the surface of the back plate 15 as oil and water droplets 21, and the outer frame lower flange 19 provided with the protrusion 23 is provided.
Drop onto a.

As shown in FIGS. 2 and 3, the projections 23 on the outer frame lower flange 19a prevent oil and water droplets 21 from spreading left and right on the outer frame lower flange 19a, and the vicinity of the projections 23 is prevented. A throttle portion 24 is provided on the bottom of the outer frame, and oil or water droplets 21 blocked by the protrusion 23 are guided to the throttle portion 2.
It collects in 4 and prevents dripping outside. A magnetron 26, which is a high-frequency generator, is coupled to the side surface of the heating chamber via a waveguide 25, and a cooling device 27 for high-frequency heating the object 22 to be heated and cooling the magnetron 26 is provided behind it. .. Part of the cooling air generated from the cooling device 27 is 28
a passes through the magnetron 26 and goes out above the heating chamber,
The other 28b serves as a ventilation path for the space between the bottom of the heating chamber and the bottom of the outer frame, and is discharged to the outside of the outer frame from a discharge port 29 provided at the upper part of the outer frame, thereby allowing the outer frame lower flange 19a and the outer frame bottom portion to be discharged. The oil and water droplets 21 in the narrowed portion 24 are dried.

[0011]

As described above, the following effects can be obtained in the high-frequency heating device with an electric heating device of the present invention.

By providing a plurality of projections at a portion of the lower flange portion of the outer plate on the lower flange of the back plate, it is possible to prevent oil and water droplets dripping from the back plate from spreading laterally, and to restrict the outer frame bottom portion. It is possible to prevent the oil and water droplets from dripping outside the outer frame by guiding them to the portion and promoting the drying by the cooling air from the cooling device.

[Brief description of drawings]

FIG. 1 is a side sectional view of a high-frequency heating device with an electric heating device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an essential part of a lower flange portion of a back plate according to an embodiment of the present invention.

FIG. 3 is a front sectional view of a high-frequency heating device with an electric heating device according to an embodiment of the present invention.

FIG. 4 is a side sectional view of a conventional high-frequency heating device with an electric heating device.

[Explanation of symbols]

 12 Heating Chamber 13 Electric Heater (Season Heater) 15 Back Plate 16 Stirring Blade 18 Outer Frame 19a Flange Part 22 Food 23 Protrusion 24 Outer Frame Bottom Drawing 26 High Frequency Generating Means (Magnetron) 27 Cooling Device

Claims (3)

[Claims] 1. A heating chamber having a punching surface on the rear surface for circulating hot air, a high frequency generator for high frequency heating food, and a cooling device for cooling the high frequency generator.
An electric heating device for electrically heating food, a back plate having a stirring blade in contact with the rear surface of the electric heating chamber for stirring hot air in the heating chamber,
A high-frequency heating device with an electric heating device, comprising: an outer frame provided so as to cover an outer periphery of the heating chamber, and a protrusion portion provided on a lower flange portion of the back plate. 2. A flange below the back plate is in contact with a bottom portion of the outer frame, and the outer frame bottom portion has a downwardly projecting throttle portion, and the projection of the back plate lower flange portion is the throttle portion of the outer frame bottom portion. The high-frequency heating device with an electric heating device according to claim 1, wherein the high-frequency heating device is provided at a location with a gap. 3. The electric heating device according to claim 1, wherein the cooling air from the cooling device is exhausted to the outside from the upper surface of the outer frame by using the space between the heating chamber bottom surface and the outer frame bottom portion as a passage. High frequency heating device.