JPS58179736A - Oven toaster - Google Patents

Abstract

PURPOSE:To shorten roast time and improve the effect of power saving by fitting a heater at an approximately central position of an upper section in a box body while window glass for a see-through window is mounted with a slight gradient upward and coating the inner surface of the window glass with a metallic oxide film. CONSTITUTION:A hot-wire reflector plate 2 in which the surface of an iron plate is plated with nickel or chromium or the like is stretched and mounted into the box body 1, one side surface (a front) thereof has a through-hole 14 and which is made of an iron plate. The hot-wire reflector plate 2 is formed to a shape that heat by electric heaters 4, 5 disposed at approximately central sections in upper and lower box body sections partitioned by a receiving pan 3 is distributed and reflected uniformly to the receiving pan 3. A window section 6 to which a light transmitter 7 is fitted is inserted into said window hole 14 in opening and closing-free shape, and the light transmitter 7 is set up with a slight gradient upward. A material in which the metallic oxide film 11 is formed on the back side of semi-reinforced glass 10 made of soda glass is used as the light transmitter 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a toaster oven equipped with a see-through window for monitoring internal cooking status from the outside.

[Technical Background of the Invention] Generally, toaster ovens have a see-through window to monitor the 11111 cooking condition of the food, but it is said that it is better to have a wide window to make it easier to observe from the outside. There is. The performance of this toaster oven is evaluated based on the unevenness of toasting on the sliced side of the sliced bread, the length of the toasting time, etc. If toasting takes a long time, the moisture contained in the sliced bread will disappear, resulting in dry, dry bread with a browned color, as well as causing dissatisfaction such as fatigue from waiting.

Therefore, the key to making delicious toast is to bake the bread at a high temperature and to keep the moisture in the bread from escaping as much as possible.

However, in conventional toaster ovens, since the window glass is transparent, some of the infrared rays generated by the heater are transmitted through the window glass and escape. It takes a long time to toast, and the inner back window of the toaster oven
[Prior art and its problems] In order to solve this problem, in the past, in order to solve this problem, the heater was placed close to the window. Designed to reduce the temperature difference between the bread surface at the back of the toaster oven and the window side, or the one at the back of the toaster oven and the window side. Designs have been made in which two tubes are arranged, one in each case, or in which the area of the window portion is reduced to reduce the escape of infrared rays.

In the case of the first design, when the heater is placed closer to the window IIK, more infrared rays escape from the window, making it impossible to fully utilize the heat ray reflector with good reflectance. This means that it takes more time to bake the bread. To solve this problem, it becomes necessary to increase the capacity of the heater, which has disadvantages such as increased power consumption.In the case of the second design, the structure becomes complicated due to the increase in the number of heaters. However, there are drawbacks such as complicating assembly and increasing costs.

Further, in the case of the third design, there is a drawback that the characteristic of making it easier to observe the eclipse d inside the toaster oven is reduced.

[Purpose of the invention]

The purpose of the present invention is to increase the baking angle of bread without sacrificing the original characteristics of the toaster oven.
To provide a nine-oven toaster that reduces the escape of moisture in bread and achieves the conditions for delicious toast with less uneven baking.

[Cost of invention]

In order to achieve the above object, according to the present invention, a metal oxide film is coated on the inner surface of the window glass of a toaster oven in which the upper part of the window glass is inclined toward the interior of the housing, and the heater is installed at the upper part of the housing. By placing it almost in the center, it will howl.

〔Effect of the invention〕

With the above configuration, since the heater can be located above the center of the food, the infrared rays directly received from the heater are evenly distributed to heat the surface of the bread, thereby reducing uneven baking. Moreover, since the infrared rays escaping from the window glass are returned to the toaster oven and incident on the surface of the bread, the amount of infrared rays incident on the surface of the bread increases, and the bread is quickly heated and browned. Therefore, we were able to achieve the conditions for delicious toast in which the outside (surface) of the bread was toasted quickly and uniformly without evaporating the moisture inside the bread as much as possible.

However, in conventional toaster ovens, the heater was placed near the window to even out the surface temperature of the bread in order to prevent uneven baking, but the infrared rays generated by the heater
As the heater approaches the window, the amount of infrared rays incident on the window glass increases, and the amount of sound incident on the heat ray reflecting plate decreases. However, according to the toaster oven of the present invention, since the toaster oven is not placed 5 away from the window glass and approximately in the upper center of the housing, the infrared rays transmitted through the window glass are slightly transmitted.Moreover, more infrared rays are incident on the heat ray reflecting plate and reflected. Since it can effectively utilize a high-efficiency heat ray reflector, more infrared rays can be collected on the surface of the bread compared to conventional toaster ovens. Therefore, it has the effect of quickly heating the surface of the bread.

Furthermore, since the rise in temperature IfF on the surface of the window glass is suppressed to a low level, it is safe to handle.

In addition, since the opening glass can be made larger, it is possible to provide a toaster oven that makes it easy to monitor the inside.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a portion of an embodiment of the toaster oven according to the present invention! It is a vertical cross-sectional view shown in one plane.

The figure shows a toaster oven, where l is a casing made of iron plate with a window hole 14 on one side, and inside this casing 1 is a # line reflection plate 2 whose surface of the iron plate is plated with nickel or chromium.
is stretched. The heat ray reflecting plate 2 is housed in the housing 1 and is formed in a shape such that heat is uniformly distributed and reflected onto the plate 3. According to this shape, electric heaters 4 and 5 are disposed at approximately the center of the upper and lower housings of the receiver in the depth direction of the tray 3, respectively. Therefore, since the infrared rays received from the heaters 4 and 5 can be heated by distributing the infrared rays received from the heaters 4 and 5 almost evenly, uneven heating can be reduced.The window part 6 is inserted into the window hole 14, This window portion 6 is provided with a light-transmitting body 7 made of, for example, a heat-resistant glass plate.The light-transmitting body 7 is connected to the housing 1 so as to be openable and closable, and forms a lid. Reference numeral 9 denotes a handle for opening and closing.

As shown in the cross section of FIG. 2, the light-transmitting body 7 has a metal oxide film 1 formed on the surface of an early-strengthened soda glass glass. This metal oxide film 11 can be easily formed by a known method such as a step-link method, a spin-on silica method, or a CVD method. In this case, it is easy to form the structure so that the light transmittance hardly changes.

Eleven metal oxide films are deposited on the electrode surface inside the casing l of the transparent body 7. The light-transmitting body 7 is arranged so that the interval between the heaters 4 and the horizontal plane formed by the receiver 1III3 becomes narrower in the upper part. It is installed at an angle so that it covers part of the horizontal plane.

Therefore, in the old toaster oven.

The receiver places the bread 13 as the substance to be heated on the plate 3-H and energizes the electric heaters 4 and 5. This electric heater 4.5 generates infrared rays, and part of the upper heater 4 directly heats the upper surface of the bread 13 as indicated by the arrow in FIG.

And the metal oxide film 11 of the heat ray reflecting plate 2 and the light transmitting body 7
As shown by the two-dot chain line B and the two-dot chain line C, most of the incident infrared rays do not pass through the heat ray reflecting plate 2 and the transparent body 7, but are reflected, and rapidly heat the J:thI of the bread 13.

At this time, since the window part 6 is provided at an angle, the infrared rays incident on the plate 3 are reflected once by the infrared rays incident directly from the heater 4 and the heat ray reflector 2 and the transparent body 7 before being received. In this case, the amount of infrared rays directly incident on the plate 3 increases. Moreover, since the heater 4 is placed at the top of the center in the depth direction of the plate 3, the amount of infrared rays incident on the transparent body 7 is reduced. Since the heat from the heater can be effectively used to heat the bread, the upper surface of the bread 13 is quickly heated and the temperature rises quickly. For this reason, the window part 691! Since the temperature of the upper surface of the bread 13 also rises quickly, uneven baking of the bread 13 can be reduced, and the temperature of the bread 13 can be quickly baked. Further, the infrared rays generated from the lower heater 5 heat the lower surface of the pan 13.

Here, regarding the toaster oven according to the present invention, the following experiment was conducted to prove that the temperature inside the toaster oven quickly rose to Kl& and that reflection of infrared rays contributed to heating. Namely.

When baking bread, the transparent body 7 of the window 6 absorbs the moisture released from the bread, and as a result of comparing the speed at which this clouding occurs, it was found that in the cooker according to the present invention, clouding occurs within about 15 seconds from the start of baking. It was done. On the other hand, the conventional one that does not have a coating is 45
A few seconds later it was cloudy. This is because the infrared rays are reflected by the window 6 and rapidly raise the temperature of the surface of the bread inside the cooker, causing the moisture on the surface of the bread to quickly evaporate. A stone that can be darkened. Therefore, less water escapes inside the bread.

Next, the heat retention properties of the toaster oven of the present invention will be explained with reference to FIG. That is, FIG. 3 is a characteristic diagram in which the horizontal axis shows the thickness of the metal oxide film formed on the light-transmitting body, and the vertical axis shows the equilibrium temperature inside the housing at each film thickness.

In other words, 6g indicates the equilibrium temperature within the housing of a conventional 800W toaster oven (manufactured by Toshiba), which rose to about 260'O.

On the other hand, song 41A has a metal oxide film of In2O3 inside the transparent body K 200, 500, 1000, 1500, 20
00, 2,700, and 3,200 degrees of film thickness were formed to detect the internal equilibrium temperature of a soo w toaster oven.

As is clear from curve A, the highest temperature was 315°C when the KITE thickness was 2,700 people, which was 55°C higher than before.
It is rising. Curve B is the oven temperature of 620W.
The maximum temperature is 2.
The temperature reached 74℃. As is clear from this characteristic, 62
80 using a conventional transparent body in a 0W toaster oven
It is recognized that the performance is better than that of a 0W toaster oven.

Therefore, it is clear that according to the present invention, a power saving effect of 200 W or more can be obtained, and heat retention is significantly improved.

In order to explain the self-baking state of bread using a conventional 620W toaster oven made by our company and a 620W toaster oven according to the present invention, photographs are shown in FIGS. 1 to 3 as reference figures.

That is, Fig. 1 shows the conventional example, and Fig. 2 shows the present invention. Both of them are air-baked to the point where they can be used for continuous baking, and when the internal temperature has risen sufficiently, two sheets are placed in each toaster oven at the same time. Thick-sliced sebans were taken out two minutes after they started baking, and the photos show the baked state of each. As is clear from the photo, f
The lower part of the toaster oven, that is, the part located on the 1st side of the toaster, is hardly toasted, whereas in the toaster oven according to the present invention shown in Fig. 2, the whole surface is evenly toasted. is recognized.

It should be noted that it took an additional 1 minute and 15 seconds to achieve the same level of doneness as in the present invention using a conventional toaster oven.

Further, FIGS. 3A and 3B, which are reference drawings, are photographs in which bread is baked to almost the same degree using a conventional toaster oven and a toaster oven of the present invention. In other words, the two people are showing how the bread is baked in a conventional toaster oven, but the bottom two corners (a) and (b) are not toasted enough. On the other hand, according to B, the toaster oven of the present invention, it is observed that the four corners (a)', (b)', ←→, and ni) are baked evenly and evenly.

Therefore, the toaster oven according to the present invention has the advantage of being able to bake bread with less unevenness in a short time, and has a large power saving effect, and can also quickly bake a large amount of bread in a limited amount of time. It has great practical value.

As is clear from the above explanation, according to the toaster oven of the present invention, many infrared rays can be collected on the surface of the bread inside the housing, so that the toaster oven time can be greatly shortened. A power saving effect of 2011 or more can be obtained, and the design that evenly distributes the infrared rays from the heater is easy, and uneven burning is reduced. In other words, in addition to the heating function, a toaster oven is required to have a burnt function, and is designed mainly for the cooking function of sliced bread.

Improving the heating function, that is, heat retention, only makes the bread dry and dry. However, according to the toaster oven of the present invention, since the heater can be designed to be separated from the window glass, the number of infrared rays incident on the heat ray reflecting plate can be increased, and the infrared rays incident on the window glass can also be reflected onto the surface of the bread. Power of incident bread 1: Since it contributes to heat,
Incident infrared ray filtering to the pan surface can be increased. As a result, the surface of the bread is warmed quickly and browned, which reduces the amount of moisture inside the bread that escapes, resulting in fluffy whole-roasted shanasu.

[Brief explanation of drawings]

FIG. 1 is a vertical side view showing an embodiment of the toaster oven according to the present invention, and FIG. 2 is a cross-sectional view showing the main parts of the present invention.
Figure 3 shows the maintenance of the toaster oven according to the present invention! v! FIG. Note that l is the casing, 2 is the heat reflector, and 3 is the tray. 4.5 is an electric heater, 6 is a window, 7 is a transparent body, 9 is a handle, 10 #i semi-tempered glass, 11 is a metal oxide film. It is 13 pieces of bread.

Claims (1)

[Claims] A casing, a window hole provided in a part of the side wall of the casing for taking food in and out and monitoring the inside, a heater that generates infrared rays provided at a substantially central position in the -L direction within the casing, and this heater. food holding means provided on a substantially horizontal surface below the housing, and a shape that reflects most of the infrared rays incident from the heater in front of the housing wall surface facing the window hole and the ceiling wall surface of the housing onto the horizontal surface. A heat ray reflecting plate made by bending,
In order to reflect most of the infrared rays incident on the window hole from the heater onto the horizontal plane, when an area above the horizontal plane is projected from above the casing, a part of the infrared rays becomes a part of the horizontal plane. A toaster oven characterized in that the inner surface of the toaster oven is coated with a metal oxide film and is closed with a translucent material supported by the casing so as to be freely openable and closable. .