KR19990038463A - Halogen Heater Insulation Structure for Microwave Oven - Google Patents

Abstract

The present invention relates to a heat insulating structure of a halogen lamp installed in a microwave oven to use light waves as another heating source.

The halogen lamp according to the present invention is installed inside the microwave oven, and operates as another heating source different from microwaves. The halogen lamp is composed of a lamp coil that emits light by application of an electric current, and a lamp tube having a lamp coil inside to fill a predetermined gas. In the present invention, a train is provided at both ends of the lamp tube. The end is formed so that the high temperature in the lamp coil is not transmitted to the outside of the lamp tube and through it. A concrete example of the heat shield is to form a heat shield paint mainly composed of ceramics at predetermined intervals from the end of the lamp tube toward the inside.

Description

Halogen Heater Insulation Structure for Microwave Oven

The present invention relates to a heat insulating structure of a halogen lamp used in a microwave oven, and more particularly, to heat insulation of a halogen lamp configured so as not to damage both ends of the halogen lamp which is a portion in which heat generated inside the halogen lamp is electrically connected to the outside. It's about structure.

Various kinds of apparatuses have been proposed to date as heating apparatuses for heating foods. The most primitive heating mechanism is a container of a predetermined shape in direct contact with a heat source, and the contents to be cooked are placed in such a container, and the desired cooking is performed by applying heat.

In addition, many types of cooking apparatuses have been developed that use electric energy directly or indirectly. As an example, a microwave oven using microwaves as a heating source may be cited. The microwave oven is a cooking apparatus in which microwaves are generated using electricity, and the microwaves penetrate the object to be cooked, causing molecular motion inside the object, and thereby heating.

Such a microwave oven is widely spread due to its simple configuration and ease of use, such as a thawing process for melting frozen food, or a device for heating food such as milk to a predetermined temperature. It is used.

However, the microwave oven cannot be said to be suitable for heating various objects due to the disadvantages in use due to the heating method and the limitation of its output.

That is, the conventional microwave oven using only microwaves as a heating source is pointed out that there is a problem in that it is not possible to provide fast and high-quality cooking because of the unity of the heating method by the microwave and its output. .

For example, when heated by microwave, the object is heated both inside and outside together, but this advantage is a significant disadvantage depending on the cooking object.

When cooking pizza as described later, it is judged that heating by microwaves is not suitable due to the properties of the object. In addition, the disadvantage of taking away too much moisture of the object during heating by the microwave oven is also pointed out.

For these current microwave ovens, various types of microwave ovens using different heat sources have been developed and commercialized. For example, a microwave oven capable of performing suitable heating on various cooking objects by attaching a heat generator, which can be said to be another heat source, separate from the microwaves. In this way, however, even in a microwave oven in which the heater is built, it is true that such a heater does not have various functions as a whole because it only serves as another heat source. For example, in order to properly cook food such as pizza, the surface must be properly heated to have a crunchy cooking state, and the inside of it should be able to obtain a heating degree that is sufficiently ripe but does not drain much moisture. .

However, it is true that the present microwave oven does not satisfy such cooking characteristics.

In conclusion, when heating by the conventional microwave only, the limitation of the heating method of the single method of heating by the microwave, the disadvantages of the output, and various disadvantages due to the evaporation of water have been pointed out. Even in the case of installation, the above-mentioned disadvantages cannot be sufficiently solved.

Unlike the conventional microwave oven described above, as another heating device, a heating device using only light waves as a single heating source has been proposed.

That is, according to US Pat. No. 5,036,179, a mass cooking apparatus is disclosed that is suitably used for a specific desired dish using a lamp that emits visible light and infrared light.

According to the above-mentioned United States patent, at least 90% of the radiant energy uses a lamp having a wavelength of 1 μm or less as a heating source, and by appropriately using visible and infrared rays emitted from such a lamp, a specific dish such as pizza To be done.

Specifically, the difference between the wavelengths of the infrared light and the visible light is represented by the difference in the heating method by the different wavelengths applied to the object, and by the difference, the outside and the inside of the object are heated in different forms.

According to such a light-wave heating apparatus, for example, in the case of a pizza, it is possible to obtain a cooking state in which the outside has a crunchy heating degree and the inside is sufficiently heated and softly heated with a predetermined moisture. .

However, such a heating device according to the United States patent, can be used only for commercial or industrial use to produce large quantities of pizza quickly, especially after the limitation of use that can not take advantage of the existing microwave oven using microwave. Following.

And as a light source that can be used in the light wave heating apparatus as described above, a configuration of a general halogen lamp is exemplarily shown in FIG.

As shown, a general halogen lamp 19, a tungsten lamp coil 19b for generating a predetermined light wave energy while passing a current, and filling the halogen gas therein while surrounding the lamp coil 19b. Molybdenum material for electrically connecting the lamp tube (19a), the external lead wire (19d) for applying a current to the lamp coil (19b), and the lead wire (19d) and the lamp coil (19b) And a terminal portion 19c to be made.

When power is applied to the halogen lamp 19 through the terminal portion 19c, the lamp coil 19b, that is, the filament, emits light having a predetermined wavelength, and the energy of the light wave is used to heat the object. It will be possible.

However, in order to use such a light wave, specifically, a lamp that simultaneously emits visible light and infrared light, as a heating source for heating a cooking object, it must be a lamp capable of sufficiently providing visible light such as infrared rays, and using such a lamp In that case, the lamp will be at a significant temperature.

Therefore, it is somewhat problematic to apply the halogen lamp 19 of the general structure as mentioned above as it is to a microwave oven according to the present invention.

That is, when applying the halogen lamp according to the present invention in a microwave oven, since the high temperature is generated as described above, there is a need for an insulation device to block the high temperature is not leaked to the outside connected to the halogen lamp.

That is, when heat generated from the halogen lamp is transferred to the lamp tube 19a, in particular, the lamp tube of the portion adjacent to the terminal portion 19c is likely to be damaged by oxidation or the like, resulting in shortening the life of the product. It is.

As described above, a heating apparatus capable of fully utilizing the advantages of heating by microwaves while having characteristics of heating by light waves, that is, radiation heating of visible light and infrared rays, may be considered. In addition, such a heating device, that is, a cooking appliance should be capable of being fully utilized in a general home, and it may be preferable to be configured to enable a wider range of cooking by a user's selection.

In practice, however, in order to use visible light and infrared light as a heating source, a lamp capable of emitting high enough visible light and infrared light must be used.

For example, in order to enable fast and high quality cooking as a heating source, it must have at least the required power, and when using a lamp to obtain such power, the heat generation in the lamp portion can be sufficiently controlled. You need a configuration that is

In other words, it is necessary to provide a sufficient heat insulating device so that heat generated from the lamp is not transmitted to the external lead wire for supplying power.

SUMMARY OF THE INVENTION An object of the present invention is to provide an insulation structure that can block heat generated from inside of a lamp, in particular filament, from being transmitted to the outside through a lead wire in a microwave oven having a lamp for generating a predetermined light wave for heating. It is done.

1 is a perspective view showing the configuration of a cavity assembly of a typical microwave oven.

Figure 2 is a mounting example of the halogen lamp to be applied to the present invention.

3 is an exemplary view of a structure of a general halogen lamp.

4 is an exemplary view of a halogen lamp according to the present invention.

<Description of Symbols for Main Parts of Drawings>

19, 20 ... Halogen lamp 20a ... Lamp tube

20b ... Lamp coil 20c ... Terminal part

20d ... leadwire 22 ... through hole

24 ... reflector 30 ... heat shield

Insulation device according to the present invention for achieving the above object is a lamp coil for emitting light by the application of a current, a lamp tube for filling a predetermined gas in the state in which the lamp coil is placed therein, and It comprises a heat shield formed on both ends of the lamp tube so that the high temperature generated in the lamp coil is not conducted through the end of the lamp tube.

By such a configuration, it becomes possible to configure such that heat generated in the lamp coil is not transmitted to the outside, particularly at both ends of the lamp tube.

According to a specific embodiment of the heat shield, it is possible to provide a simpler structure and assembly process by configuring a heat shield coating applied to both ends of the lamp tube.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

FIG. 1 schematically shows the configuration of a cavity assembly 10 of a microwave oven OTR (Over The Range) type microwave oven, which is generally installed above the gas oven range.

The heat insulating structure of the lamp to be applied in the present invention can be applied to a microwave oven such as a phase, it will be briefly described with respect to the microwave oven to be applied to the heat insulating structure according to the present invention with reference to FIG.

The microwave oven to which the heat insulation structure of the present invention is to be applied may be any type of microwave oven including a cavity 12 in which microwaves generated from a magnetron are supplied by application of a current and a predetermined cooking is performed.

Therefore, as described below, the heat insulation structure according to the present invention is not limited to the above-described ORT-type microwave oven.

Referring to FIG. 1, microwaves are supplied into the cavity 12 by oscillating a magnetron (not shown) in a state in which an object to be heated is positioned inside the cavity 12.

The magnetron is installed inside the electrical chamber 18 located next to one side of the cavity 12, and the microwaves generated by the magnetron are supplied into the cavity 12 directly or through a microwave guide. do.

The microwave oven according to the present invention uses a lamp having a predetermined wavelength as a separate heating source in addition to the microwaves as described above.

The lamp used in the present invention is capable of simultaneously generating visible light and infrared light at a predetermined ratio, and the light wave energy should be sufficient to rapidly cook the object.

For example, the lamp used in the present invention is a halogen lamp, which is an example configured to emit visible light and infrared rays in the ratio as described above when heated to the output required for heating. .

Halogen lamps generate light waves having a wavelength within 1 µm of a large part of the output, and among them, visible light having a wavelength of 0.4 to 0.7 µm. In the case of simultaneously emitting such visible and infrared rays, it is possible to obtain a desired cooking state depending on the characteristics of such light waves, for example, conditions depending on the degree of penetration of the wavelength into the heating object.

In other words, for example, as described above, the surface of the pizza can provide a crispy cooking state, and the inside of the pizza can provide a smoothly cooked cooking state.

Such a halogen lamp may be selectively mounted on the upper surface 16 and the lower surface 14 of the cavity 12 in FIG. 1. Of course, the mounting of the halogen lamps should be determined including the number and the respective outputs in consideration of the required outputs.

2 shows an example of the halogen lamp 19 mounted to the upper surface 16 or the lower surface 14 of the cavity 12. As shown, a plurality of halogen lamps 19 are supported by a lamp holder (not shown) on the upper surface 16 or the lower surface 14 of the cavity 12. On the upper surface 16 or the lower surface 14, a plurality of through-holes 22 are formed to irradiate the food in the cavity 12 with the light generated from the halogen lamp 20.

On the rear surface of the halogen lamp 19, a reflector 24 for reflecting light generated from the halogen lamp 19 into the cavity is provided.

Therefore, the light generated from the halogen lamp 19 is incident to the inside of the cavity 12 through the through hole 22, and the cooking as described above will proceed. However, since the halogen lamp 19 provides a light wave having a density sufficient to heat an object, the halogen lamp 19 generates considerable high temperature, specifically, for example, 1000 ° C. or more.

FIG. 4 exemplarily illustrates a halogen lamp to which the heat insulation device according to the present invention is applied. The halogen lamp 20 according to the present invention, as shown in the figure, trains the lamp tube 20a corresponding to the terminal portion 20c for connecting the lamp coil 20b and the lead wire 20d to which power is applied from the outside. The technical gist of the present invention is to provide a heat shielding portion 30 formed by applying a single coating material.

As described above, the halogen lamp 20 generates a high temperature of 1000 ° C or higher. Since the high temperature is substantially generated by the light generated by the lamp coil 20b of the halogen lamp, the heat source may be referred to as the lamp coil 20b.

Therefore, when the heat is prevented from being conducted to the terminal portion 20c, which is a part connected to the lamp coil 20b, the lamp tube 20a or the like can be prevented from being damaged by the high temperature of the conducted heat.

In the present invention, the lamp tube of the portion corresponding to the terminal portion 20c in order to block the heat from the lamp coil 20b connected to the terminal portion 20c as described above to be transmitted to both ends of the lamp tube 20a. The heat shield 30 is formed at 20a so as to prevent heat conduction.

The heat shield 30 may be configured to apply, for example, a heat shield paint to the inside of the lamp tube 20a at an outer side adjacent to the terminal portion 20c.

Substantially such a thermal barrier paint is such that the high temperature heat described above is not transmitted to the outside, in particular to the portion of the lamp tube 20c adjacent to the terminal portion, and it is basically required to be able to withstand the high temperature as described above. In addition, the thermal conductivity must be extremely low so that the heat generated from the lamp coil 20b of the halogen lamp 20 is not transmitted to the terminal portion 20c and the lamp tube in the vicinity thereof.

It is preferable to use such a heat-transfer coating material as the main component of the ceramic component which can withstand high temperature, ie, an inorganic silicone component. Of course, it is not limited to such a coating material, It will be enough if it is provided with heat resistance and low thermal conductivity as mentioned above.

Of course, the heat shield 30 is not limited to applying the heat shield paint to both ends of the lamp tube 20a as described above, and by attaching a separate heat insulating member to the lamp tube 20a, the lamp tube 20a. It is sufficient to be able to prevent the heat conducted at both ends of the).

According to the present invention as described above, by implementing a heat shield at both ends of the lamp tube 20a, that is, the lamp tube 20a adjacent to the terminal portion 20c, high heat can be prevented from being transmitted to both ends of the lamp tube. It can be seen that it is configured to.

Therefore, when heating by using a halogen lamp in the microwave oven according to the present invention, by preventing the high temperature heat generated from the lamp is not transmitted to both ends of the lamp tube to prevent the surrounding portion from heat damage, as well as the life of the lamp itself Can be extended.

According to the present invention configured as described above, the halogen lamp as described above, that is, a lamp capable of emitting visible and infrared rays having a predetermined wavelength at an appropriate ratio, and a microwave can be selectively used as a heating source. It is possible to provide a cooking appliance.

Therefore, it is possible to provide a microwave oven having various uses, in particular, it is possible to improve the usability of the home microwave oven.

According to the present invention, when a halogen lamp is used, heat generated from the lamp is prevented from being conducted to the terminal portion for connection with an external power source and the lamp tube near the terminal portion. That is, by forming a heat shield using heat shield paint at both ends of the lamp tube, the amount of generation from the internal lamp coil is not directly conducted, thereby reducing the damage of the lamp when the halogen lamp is used and using it for a long time. It will be possible.

As described above, according to the present invention, a microwave oven is applied to a microwave oven that uses microwaves as a heating source, and a cooking appliance which can use a halogen lamp that emits visible light and infrared rays of different wavelengths as a microwave or optionally as a heating source. By providing the present invention, it is possible to realize the multifunctionality of the microwave oven, and in particular, the effect of preventing the halogen lamp from being damaged by heat is expected.

Claims (2)

A lamp coil emitting light by application of a current; A lamp tube filling a predetermined gas therein with the lamp coil positioned therein; And a heat shield formed at both ends of the lamp tube such that the high temperature generated in the lamp coil is not conducted through the end of the lamp tube. The heat insulation device of the halogen lamp for a microwave oven according to claim 1, wherein the heat shield is made of a heat shield paint applied to both ends of the lamp tube.