JP2003172519A - Hanging type high frequency heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a microwave oven eliminating corner parts, joints and fixing parts with screws, in setting the oven, for a simple outside appearance and for prevention of injury with an end surface, and allowing easy maintenance and replacement of a defective component. <P>SOLUTION: The upper end surface of a U-shaped body 26 covering the outer shell of a heating chamber 14 is fastened with screws to an end surface of a flat upper lid 27. Accordingly, the lower end of the U-shaped body has no screws or joints, and lampblack or steam stain can be easily wiped off. Further, there is no exhaust resistance, the generated noise level is low, and a simple design can be secured in the microwave oven. In addition, since maintenance or replacement of a component is possible only by removing the upper lid, the improved service is provided. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a U-shaped body and an upper lid forming a casing of a hanging type microwave oven.

[0002]

2. Description of the Related Art Conventionally, the structure of a hanging type microwave oven of this type will be described with reference to FIG.

A conventional example as shown in FIG. 3 constitutes a hanging type microwave oven composed of an inverted U-shaped body and a bottom plate like a floor-standing type microwave oven, and 1 is an inverted U-shaped body, Two
The end face 3 of the body 1 was overlapped with the bottom plate and the bottom face side and fastened with screws. Reference numeral 4 is a heating chamber of a microwave oven, which is provided with a ventilation fan 5 on the upper side, has exhaust passages 6 on both sides, is equipped with a door 7 and an operating portion 8 on the front side, and an exhaust grill 9 on the upper front side.
And 10 are ventilation inlets opened to the left and right of the bottom plate 2, each of which is equipped with a filter 11. 12 is
It is a cooking utensil installed under the hanging microwave oven.

[0004]

However, in the above-described conventional microwave oven, a seam is formed between the bottom plate of the body and the bottom plate, and the head of the screw protrudes. Therefore, the seam and the screw are not formed in the exhaust passage of the ventilation fan. Therefore, noise due to wind noise and ventilation capacity due to resistance are reduced, oil and fat generated from the cooking utensils below adhere to seams and around the screws, making it difficult to remove dirt and cleaning performance. become bad. In addition, because the seams and screws are visible, in the case of a hanging-type microwave oven, the lower body was in the line of sight when installed, which was a very unsightly design. In addition, when a component fails, the component cannot be replaced unless the body is completely removed when the component is replaced, resulting in a problem that man-hours are required.

The present invention is to solve the above-mentioned conventional problems, and a U-shaped integral body is formed at the bottom of a hanging type microwave oven without tightening a seamless screw. The purpose of the present invention is to provide a structure that reduces the noise and improves the ventilation capacity, improves the appearance at the time of installation with easy cleaning and a clean design, and facilitates the replacement of defective parts.

[0006]

In order to solve the above-mentioned problems, the present invention provides a flat top lid on the upper part of a hanging type microwave oven, and mounts a U-shaped body on both end surfaces thereof. This makes it easy to replace parts, and
When the hanging type microwave oven is installed on the upper part of the cooking utensil, there is no joint part on the lower part.

According to the above invention, about 90% of the components of the microwave oven can be replaced by simply attaching the U-shaped body to both end surface flanges of the upper lid and removing the upper lid with screws, which is easy. Moreover, parts replacement and repair can be easily performed in a short time. Also, since the body located above the cooking utensil is integrally formed in a U-shape, by using a flat bottom structure with no protrusions such as seams or fixing screws at the bottom, it is possible to prevent oil smoke during cooking. You can easily clean the adhesion of oils and fats.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 or 2 is provided with a heating chamber for heating food, a magnetron for generating and supplying a high frequency in the heating chamber, and a blower fan for cooling the magnetron. A waveguide for guiding high frequency waves from the magnetron into the heating chamber,
A high-frequency heating device comprising an inverter power supply for oscillating high-frequency radio waves to the magnetron and a blower fan for cooling the inverter power supply, and comprising a door and a control panel for driving the electric parts and the like in the front part of the heating chamber. A body that covers the outer periphery of the high-frequency heating device is attached in a U shape, is covered with a flat top lid on the upper portion, and is fastened to the body with an end face with screws. Both sides of the bottom surface of the U-shaped body are attached. It is equipped with a ventilation inlet and a filter. A suspension type high-frequency heating device is provided, in which an exhaust passage is formed in the outer peripheral wall of the heating chamber from the ventilation intake port, and a ventilation fan is arranged in the upper center of the heating chamber. By configuring and using a screw tightening configuration at the end surface of the upper lid of the upper part, it is possible to provide a refreshing design in the suspended state, drive the ventilation fan because there are no seams or screws, and occurred in the lower stove, When oil smoke or water vapor is sucked from the ventilation intake port, wind noise and resistance on the exhaust passage are reduced, noise is reduced, and exhaust efficiency is improved.

According to the third aspect of the present invention, the U-shaped body is integrally formed up to the upper lid so as to form a seamless U-shaped body. With a clean design, it is possible to provide a highly safe hanging type high frequency heating device with no corner edges or screw protrusions, and it is easy to do without dirt from the bottom part being accumulated on the seams or screws etc. It can be cleaned simply by wiping it with a clean and improved cleaning performance.

According to a fourth aspect of the present invention, the upper end surface of the U-shaped body and the L bending portions of both end surfaces of the flat upper lid are screw-fastened from the side surfaces, and the body side is not removed during repair. By simply removing the top lid, the parts placed above the heating chamber can be easily repaired and replaced, and the man-hours can be reduced to improve serviceability.

[0011]

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

(Embodiment) FIG. 1 is a configuration diagram of a U-shaped body and an upper lid forming a housing of a hanging type microwave oven according to an embodiment of the present invention. FIG. 2 shows an installation state diagram in the embodiment of the present invention.

In FIG. 1, a heating chamber 14 has a magnetron 15 for oscillating radio waves upwardly connected to a waveguide 16 arranged on the upper surface of the heating chamber, and a rotary motor 17 is provided at the exit side of the waveguide 16. The rotary antenna 18 is faced through and the top plate 19 made of resin or mica covers the lid. A sirocco fan motor 20 for cooling is provided behind the magnetron 15. Reference numeral 21 is an inverter power source, and a cooling propeller fan motor 22 is attached to the front portion.
Via the drive motor 23 to the outside of the lower part of the heating chamber 14,
A table 24 is arranged in the heating chamber. The heating chamber 1
A ventilation fan 25 in which sirocco fans are arranged on the left and right sides through a biaxial type motor is provided in the upper central rear of 4. An inverted U-shaped body 26 is provided around the heating chamber 14.
And is fixed to the body end face with a screw at the end face bent portion of the substantially flat upper lid 27 provided on the upper part. Ventilation inlets 28 are opened and filters 29 are attached to both sides of the lower portion of the inverted U-shaped body.
Reference numeral 30 denotes a left and right exhaust passage formed between the heating chamber 14 and the inverted U-shaped body 26, which communicates with the ventilation fan 25.

FIG. 2 shows the cabnet shelf 31 when installed.
This microwave oven is hung between the doors and has a door 32 on the front surface, an operation portion 33 on the side portion, and an exhaust grill 34 arranged in front of the ventilation fan 25. A gas stove 35 is attached to the lower part.

Next, the operation will be described. The door 32
Then, the object to be heated is placed on the table 24 inside the heating chamber 14, and the operating mode is used to select and start the cooking mode, so that the high frequency generator from the inverter power supply 21 generates high frequency from the magnetron 15. The electric wave passes through the waveguide 16 and is guided to the rotating antenna 18 which is rotated by the rotating motor 17, and the electric wave heats and heats the object to be heated while stirring. At this time, the propeller fan motor 30 is used to cool the electronic components of the inverter power supply.
Then, the sirocco fan motor 20 for cooling the magnetron is driven.

Next, when cooking is performed using the gas stove 35, in order to ventilate exhaust gas at the time of cooking, water vapor, oil smoke, etc. generated at the time of cooking, a ventilation fan 25 in a microwave oven installed in the cabinet shelf 31. The exhaust gas collected from the filters 29 having ventilation inlets 28 formed on both lower sides of the U-shaped body 26 is formed on both sides of the heating chamber 14. The exhaust grill 34, which is guided to the ventilation fan 25 through the exhaust passage 30 and is provided on the front surface of the microwave oven from the outlet of the fan
Is discharged indoors. In this case, the ventilation fan can also exhaust to the outdoor direction (not shown) depending on the installation method. Naturally, the filter 29 is used even during the indoor exhaust.
By this, oil smoke and impurities can be removed.

Further, when the ventilation fan is forcibly turned by a key operation from the operation section, or when the exhaust heat from the gas stove 35 becomes high and the temperature of the electronic components of the microwave oven body above rises, the thermistor. The ventilation fan 25 is automatically controlled and driven by a temperature detecting element (not shown) such as to prevent the electronic parts from being broken.

As described above, the body is formed in a U shape and the ventilation fan is driven because there is no joint or screw with the bottom plate and there is no gap where the mating surface with the joint is without a screw. At this time, since the exhaust gas guided from the lower ventilation intake port has less wind noise and resistance in the exhaust passage, the exhaust efficiency can be improved with very low noise.

When the U-shaped body is installed on a cabinet shelf, there are no seams or screws in the line of sight, and the U-shaped R shape eliminates the corner edges. It is possible to prevent injuries due to bulges and ensure safety, and to clean the dirt caused by oil smoke from the bottom with a U-shaped body simply by wiping it to improve cleanliness.

In addition, the main body of the hanging type microwave oven is taken down from the cabinet shelf when the electric parts and the like break down, but it can be easily placed on the upper part of the heating chamber by removing only the upper lid part without removing the whole body. The repaired and replaced parts can be repaired, the man-hours can be reduced, and the serviceability can be improved.

[0021]

As described above, in the high-frequency heating apparatus of the present invention, a U-shaped body and a flat upper lid form an outer shell, and the equipment is hung on a cabinet shelf. By eliminating the tightening with screws and using the U-shaped integrated body, you can easily clean the dirt caused by oil fumes from the lower gas stove to ensure cleanliness, and eliminate obstacles due to seams and screws to eliminate wind noise and exhaust passages. It is possible to provide a clean design with no seams or screws at the bottom when it is mounted on the cabnet shelf, while reducing the resistance of the, reducing noise and improving ventilation efficiency. When repairing parts, the body can be repaired and replaced by simply removing the upper lid, shortening the repair man-hours and improving serviceability.

[Brief description of drawings]

FIG. 1 is a front configuration diagram of a heating chamber of a high-frequency heating device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of installation of a high-frequency heating device according to an embodiment of the present invention.

FIG. 3 is a front view of a heating chamber in a conventional high-frequency heating device.

[Explanation of symbols]

14 heating chamber 25 Ventilation fan 26 body 27 Top cover 28 Ventilation inlet 30 exhaust passage

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F24C 15/30 F24C 15/30 A H05B 6/64 H05B 6/64 C (72) Inventor Fumihiko Migaki Kadoma City, Osaka Prefecture Daiji Kadoma 1006 Matsushita Electric Industrial Co., Ltd. (72) Inventor Masato Yamauchi Kadoma City, Osaka 1006 Kadoma Matsushita Electric Industrial Co., Ltd. F term (reference) 3K090 AA05 AA06 BA01 BB01 DA08 EA01 EB29 EB40 3L086 AA01 BA01 BA05 BE01 BE02 DA08 DA30

Claims (4)

[Claims] 1. A suspension type high frequency heating device comprising a heating chamber, an upper lid arranged on the top surface, and a body for covering the heating chamber, wherein the body is U-shaped. 2. A heating chamber, an upper lid arranged on the top surface, a body for covering the heating chamber, an exhaust passage formed on a side surface outside the heating chamber, and a ventilation fan inside the body.
A hanging type high-frequency heating device, which is arranged in a character shape and is provided with a ventilation intake port on the lower surface of the U-shaped body. 3. The suspension type high frequency heating device according to claim 1, wherein the U-shaped body is integrally formed without a joint. 4. The suspension type high frequency heating device according to claim 1, wherein the upper end surface of the U-shaped body and the L bent portions of both end surfaces of the flat upper lid are screw-fastened from the side surfaces.