JPS6324219B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite heating device equipped with high-frequency heating means and gas combustion heating means, and is intended to improve serviceability, layout, safety, and performance.

Recently, heating devices that combine a microwave oven and a gas oven have become popular.

This type of heating device uses electricity and gas as a completely different heat source, so it has the advantage of being able to perform simultaneous heating without being limited by power supply capacity, and is generally called a combination range.

However, in conventional combination ranges, different heat sources coexist in the heating chamber, and gas and electrical components coexist inside the machine, making layout difficult and causing problems in serviceability and safety. In addition, these unreasonable requirements also affected performance, resulting in problems such as the external shape becoming larger than necessary and the cost being relatively high. The present invention attempts to solve these various problems by improving the structure.

FIG. 1 is a side view of the interior of a conventional fuselage, and FIG. 2 is a schematic cross-sectional front view of the conventional example, showing only the basic layout.

In FIG. 1, 1 is an operation panel having a timer knob 2, gas knob 3, and other control operation parts, 4 is a body, 5 is a heating chamber, 6 is a back plate that makes up the outer shell, and 7 is a bottom plate that makes up the main body. , 8 is a magnetron used as a high-frequency oscillator, 9 is a power transformer for the magnetron, 10 is a high-voltage capacitor,
Reference numeral 12 denotes a gas knob provided coaxially with the aforementioned gas knob knob 3, and 25 denotes a gas supply port through which gas is introduced through a rubber hose or the like. 13 is a gas pressure regulating governor, 14 and 15 are solenoid valves for main and pilot lights, 1
6 is a pipe leading from the gas control devices 13 to 15 to the burner 17, and is composed of a main burner and a pilot burner. 18 is a combustion chamber having the burner; 19 is a motor for driving a circulation fan 20 that introduces high-temperature combustion gas into the heating chamber 5 and forcibly circulates it inside the refrigerator; 21 is an exhaust pipe inside the refrigerator; Has a sensor. 2
2 is a cooling fan for the magnetron 8, 23 is an air guide, 24 is an attached storage, 26 is a pilot flame detection,
This is an electronic circuit unit that includes a temperature control circuit and other safety circuits.

FIG. 2 is a schematic cross-sectional front view showing only the basic layout. Reference numeral 11 indicates a mounting base for mounting the aforementioned transformer 9, etc., and since the aforementioned governor and solenoid valves 12 to 16 pass through the bottom plate 7, these It is floating to avoid. In the case of the conventional combination range configured in this way, the following problems occurred because the gas control device and low voltage and high voltage parts were coexisted in the same body.

1 For example, even if only the gas section is inspected or repaired, all the high-pressure parts of the microwave oven are exposed, which is dangerous, and since the external shape cannot be unnecessarily enlarged, the structure is generally complicated, which impairs serviceability. It tends to be.

2. Layout is difficult because different functions coexist, and trying to make the external shape more compact would complicate the internal structure, causing problem 1 above and limiting the ability to make it more compact. Become.

3. As a household countertop type, it is necessary to minimize the expansion of the external shape, so the internal structure is made three-dimensional, and mounting parts are added to make it three-dimensional, and the cooling performance is improved due to the denser internal structure. In addition to countermeasures against deterioration, external components such as magnetrons and high-voltage transformers must be larger than those for single-function ovens, resulting in an immeasurable increase in costs in terms of layout.

4. Due to changes in the flame due to gas pressure fluctuations, etc., problems may occur, such as the flame being visible from inside the refrigerator, or oily smoke from the food being sucked in by the circulation fan 20 catching fire.

5. Naturally, the path to the exhaust port becomes shorter, so thermal efficiency deteriorates accordingly.

Such problems were also likely to occur.

Therefore, the present invention attempts to improve these various problems with a simple configuration.

FIG. 3 is a perspective view of one embodiment of the present invention;
7 is a gas knob provided on the operation panel,
28 is a door, 29 is a body, 30 is an exhaust port for exhausting the inside of the refrigerator and combustion gas, and 31 is a door for an accessory storage.

FIG. 4 is a side view of the inside of the fuselage shown in FIG. 3, and since the components are the same as the conventional example described above,
Here, only the main points of the present invention will be explained.

31' is a bottom plate that serves as a base material for various installations such as the heating chamber 32, the aforementioned door 28, high voltage transformer 33, capacitor 34, etc., and can be said to be the base material of the equipment structure.
The present invention attempts to solve the conventional problems by separately arranging the microwave oven member and the gas member on the upper and lower sides of the bottom plate. That is, a combustion cylinder 38 and the like having a circulation fan motor 39 and the like for introducing and circulating the microwave oven member and the above-mentioned combustion gas into the refrigerator is disposed on the upper side.
A gas supply device 35 such as a gas supply device 35, a governor, an electromagnetic valve, a nozzle, etc., a gas supply device 35, a burner 36, and a combustion chamber 37 are arranged on the lower side, and the gas supply device 35, such as a gas supply device 35, a governor, a solenoid valve, a nozzle, etc. By providing an opening A with a width l ₁ , the combustion gas becomes as follows (in Fig. 4, the combustion gas is indicated and the exhaust is indicated by a → mark).In other words, the combustion gas burned in the burner 36 is The combustion gas is guided through the combustion tube 38, sucked into the circulation fan, and then circulated in the heating chamber and discharged sequentially from the exhaust port.The flow of the combustion gas is the same as in the conventional example. be.

The effects of the combination configured in this way are described in comparison with the conventional example described above. 1. Microwave oven parts and gas parts are connected to the bottom plate 31',
Since it is separated, there is no duplication of different parts, making it safe during inspection and repair. Furthermore, as shown in Fig. 3, by fixing the inspection window 41 of the gas section to the side with screws 42, inspection and repair of only the gas section can be done by removing only the inspection window, which improves serviceability and further improves safety. . In other words, in the past, the entire body was removed, which exposed all of the multiple dissimilar parts, which was extremely dangerous and serviceability was poor.

2. Conventionally, the distance between the burner 17 and the exhaust port _L3 and the distance between the circulation fan motor 19 _L2 - In reality, the lower end of the intake port and the lower end of the combustion chamber 18 must also be separated by a predetermined distance from the viewpoint of improving combustion performance and efficiency. In order to maintain a distance such as -, it was necessary to increase the distance _h1 between the oven bottom plates, which was a major cause of increasing the overall height _h3 . On the other hand, according to the present invention, since the burner is located under the bottom plate, l ₂ ′ and l ₃ ′, which correspond to the above-mentioned values, can necessarily be increased.
The distance h ₁ ′ between the oven bottom plates can also be reduced, and the overall height h ₃ ′ can also be reduced, making it naturally more compact, eliminating layout constraints, and reducing costs simply by making the body more compact. However, the total cost of packaging materials, transportation costs, and warehousing costs can be considerable.

3. As mentioned in 2 above, since l ₂ ' and l ₃ ' can inevitably be large, problems 4 and 5 mentioned in the conventional example can also be greatly improved.

4 Furthermore, even though the gas section is arranged at the bottom of the bottom plate 31', the space it occupies in the depth direction is d ₁ at 37 minutes for the burner and combustion chamber, and the remaining d is the interior depth d ₂ , and d> d ₂ , and in the width direction, the space for storing the gas supply unit 35 is w ₁ , and the remaining part w after removing the leg attachment w ₃ is set so that w> _{w 2 ,} where w is the internal width of the refrigerator. By setting, if the height direction is h ₄ , this w×
A space of d x h ₄ can be used as accessory storage.

As described above, the present invention is significantly more compact than the conventional technology, has a simplified layout, improves serviceability, safety, and performance, and has a rational arrangement of accessory storage. This enables cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional composite heating device with the exterior removed, FIG. 2 is a front sectional view of the same, and FIG. 3 is an overall perspective view of a heating device showing an embodiment of the present invention.
Figure 4 is a side view with the exterior removed, Figure 5
The figure is a front sectional view of the same. 8... Magnetron, 31'... Bottom plate, 32...
... Heating chamber, 35 ... Gas supply device, 36 ... Burner, 37 ... Combustion chamber, 38 ... Combustion tube.

Claims (1)

[Claims] 1. A heating chamber that stores an object to be heated, an outer frame that covers the heating chamber, a high-frequency oscillator that is located on the side of the heating chamber and supplies high-frequency energy to the heating chamber, and a frame provided below the bottom of the outer frame. a storage section in which accessories and the like can be taken in and out from the front; a burner located at the rear of the storage section that emits a flame from an opening formed in the bottom surface of the outer frame to a lower end of the rear surface of the heating chamber;
A composite heating device comprising: a gas control device for controlling combustion in the burner, which is located on the side of the storage section and at the bottom of the bottom of the outer frame on the side where the high-frequency oscillator is located.