JPS61125527A - Microwave oven - Google Patents

Abstract

PURPOSE:To provide a microwave oven capable of carrying out efficient heat cooking at a uniform temperature and also carrying out appropriate heat cooking in accordance with the quantity of foods by providing a fan fro generating hot air flow and an adjustor for adjusting variably the heating area of hot air flow with respect to a cooking pan. CONSTITUTION:By setting a cooking pan 4 on a setting base 5, the pan 4 is located at a position substantially blocking an upper hot air blowoff port 3. When power is supplied to a sheath heater 10 and a fan motor 21, the sheath heater 10 generates heat, and a fan 16 rotates. As a result, a hot air flow is generate within the main body 1 of the oven, and circulates as shown by arrow. When the quantity of foods is large, the heating area of the hot air flow passing through an opening 24 with respect to the cooking pan 4 is increased by the shift of a lever 28. When the quantity of foods is small, the heating area of the hot air flow passing through the opening 24 with respect to the cooking pan 4 is decreased by the shift of the lever 28 in the opposite direction.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an electric oven using an electric heating element as a heating source.

(b) Conventional technology In recent years, electric ranges that use an electric heating element as a heat source have become popular from the standpoint of safety. For example, as disclosed in Japanese Utility Model Publication No. 57-44248, a spiral-shaped sheathed heater is placed exposed from the top plate, and this top pressure cooking pot is placed to cook food. Such electric ranges are not suitable for cooking pots with inner bottoms, and flat-bottom ones! ! ! Even when embedded silk was used, there remained the problem that the temperature distribution was uneven and efficient heating could not be performed. Furthermore, since the heating area was constant, it was not possible to heat the food in proportion to the amount of food put into the pot, resulting in problems such as oil smoke being generated from the pot in areas where one food ingredient was missing. .

(/-1 Problems to be Solved by the Invention) In view of the above-mentioned conventional problems, the present invention provides an electric oven that performs efficient cooking at a uniform temperature and also performs appropriate heating according to the amount of food. This is what we provide.

2) Means for Solving the Problems The present invention has a main body having a hot air outlet on the upper surface with which a cooking pot is placed facing each other, and a plurality of electric heating elements installed in the main body below the hot air outlet. This is an electric range equipped with a fan that generates hot air within the main body and an adjustment device that adjusts the heating area of the hot air with respect to the cooking pot with variable pressure.

(E) Function In the above configuration, the hot air generated within the main body by the operation of the electric heating element and the fan is uniformly blown from the hot air outlet to the bottom of the cooking grate placed opposite the outlet. Furthermore, by varying the heating area of the cooking pot button using the adjustment device, cooking is performed in accordance with the amount of food put into the cooking pot.

2) Embodiment Figure 1 is a longitudinal sectional view of the electric range of the present invention, Figure 2 is a top view of the same main part, and Figure 3 is a sectional view taken along h-i in Figure 2. The main body has a heat insulating structure with a removable top plate (2).The top plate (2nd section has a circular upper hot air outlet (3), and a cooking pot (4) is attached to the upper air outlet on the edge of the opening. A mounting table (5) made of cast metal is installed in an annular shape to support the outlet (3) at 90 degrees Celsius.
) is provided with a support plate (7) that supports a V@setting device (6) for variably adjusting the hot air blowout area, which will be described later. A lower hot air outlet (8) facing the lower outlet (8) is opened so as to substantially coincide with the lower outlet (8), and a guide tube (9) is provided at the periphery of the opening to guide the hot air passing through the lower outlet (8) to the upper outlet (3). ) has been established.

A plurality of sheathed heaters (1 (l) as electric heating elements are installed in the vertical and horizontal directions with appropriate intervals between the opposing walls of the main body (1) and the upper main body (11) below the lower hot air outlet (8). For reference, in the example, a sheathed heater (21 Il's) with a power consumption of 1 kilowatt is used.
It produces a total calorific value of about 18,000 kilocalories, and can easily reach a cooking temperature of about 600'C.

As described above, the hot air circulation path a's+ is such that the air outlet 0 is located on one side of the sheathed heater group a1 installed in the main body tII, and the suction port (12) is located below the other side of the heater group acI.
t, defined by a dividing plate a4 arranged along the inner wall of the main body +11 and a seventh uncover aS continuous with the dividing plate (+41), and facing the suction port α21 formed in the fan cover 09. A circulation 7 fan (161) for generating hot air is installed in the circulation path αJ, and the fan ae
The rotating shaft α force extending from the main body (11) is inserted through the wall of the main body (11) and the two bearings (19A, l and (19B) K) on the support stand UE.
Supported.

Furthermore, the fan motor is fixed on the °C support stand U8 via the joint ■! 211.

Next, the adjustment device (6) is installed between the upper hot air outlet (3) and the lower hot air outlet (8) to variably adjust the area of the hot air blowing onto the cooking pot (4). ) will be explained in detail. ■ is an infield moving body formed by casting, θ is an external rotating body also formed by casting, and these form a box shape with openings on opposite sides, and the infield moving body is inside the external rotating body. form a polymerizing relationship. Also,
The inner movable body and the outer rotating body (c) form an opening C4 by forming their upper surfaces into opposing semi-elliptical shapes (22A) and (23A), respectively. Therefore, wheels (C) that rotate on the support plate (7) are attached to some of the lower corners of the infield moving body (2) and the outside rotating body (2z), so that the infield and outside movable bodies (2z and 2z) can be moved. As is clear in Figure 2, the means for moving the internal and external movable bodies (2z and 2) are as follows: The rear end of G is connected to the rising walls (7A) on both sides of the support plate (7).
Basically, this is achieved by connecting a rope □□□ that is hung around a pulley ωK fixed to the pulley ωK, but in order to make the operation smooth, both the former and the latter are constructed in pairs at one corner. Furthermore.

A lever (to) for moving and operating the and θ of the inner and outer movable body extends from the outer rotary body to the front of the main body (II).

The operation will be explained based on the following (5 or more configurations).

By placing the cooking pot (4) into which ingredients are placed on the mounting table (5), the pot (4) is positioned to substantially block the upper hot air outlet (3). Around this time, when the sheathed heater αa and fan motor 0IIK are energized, the sheathed heater αα generates heat and the fan Q61 rotates. This generates hot air inside the main body (1), and this hot air
The hot air is circulated as shown by the arrow in the figure, and on the way (in the middle) the hot air passes through the low pressure area, that is, from the lower outlet (8), through the guide tube (91), and further through the opening (2) formed by the adjustment device (6). The cooking pot (4) K located at the upper air outlet +31 is evenly blown onto the food to cook the food, and after 5 degrees, the hot air is returned from the suction port α2 to the circulation path Q3) and is heated from the air outlet 0υ. When it is blown out, the temperature rises and it is blown onto the cooking pot (4) again through the above-mentioned route.

By the way, the amount of ingredients put into the cooking pot (4) varies, and it is necessary to appropriately heat the cooking pot (4) depending on the amount of ingredients. For example, when the amount of food is large, the heating area of the cooking pot (4) must be correspondingly increased. The moving objects move outward, and along with this, the moving objects in the same town also move outward. As a result, the area of the opening @ becomes larger as shown in FIG. Therefore, this opening CI! The hot air passing through the cooking pot 41 (the heating area for 41 becomes large).

(On the other hand, when the amount of ingredients is small, the heating area of the cooking pot (4) must be reduced accordingly,
In this case, when the lever (2) is moved in the direction of arrow CB in FIG. 2, the outer rotating body moves inward, and accordingly, the outer rotating body also moves inward. As a result, the area of the opening Q center becomes smaller as shown in FIG. Therefore, the heating area for the cooking pot (4) of the hot air passing through this opening G4) becomes small.

If you want to temporarily stop heating the cooking pot (4) regardless of the amount of ingredients, move the lever in the direction of the arrow (B1) to completely polymerize the inner and outer rotating bodies. As shown in FIG. 6, the opening Q is completely closed (closed) and heating of the cooking pot (4) is stopped.

Note that the adjustment device (6) is not limited to the embodiment, and may have any configuration as long as the opening area can be varied.

(g) Effects of the Invention As described above, according to the present invention, hot air at a uniform temperature is evenly blown onto the cooking pot, so thermal efficiency is improved, and food can be cooked evenly.

Furthermore, since the present invention is equipped with an adjustment device that can adjust the heating area of the Y4 pot with variable TIC, it is possible to perform appropriate heating and cooking according to the amount of food that is put into the cooking @.
Unlike the conventional method, the generation of oil smoke due to heating of unnecessary parts can be prevented as much as possible.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the electric range of the present invention, Fig. 2 is a top view of the main parts, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Figs. 4 to 6 are openings of the opening. It is a top view showing a state. (D...Main body, (3)...Upper hot air outlet, (
4)...Cooking pot, 1)...Adjustment device, Sealed heater, (161...Fan) Applicant: Sanyo Electric Co., Ltd. and one other representative Patent attorney: Mamoru Sano Figure 2 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A main body having a hot air outlet on the top surface with which the cooking pot is placed facing, a plurality of electric heating elements installed in the main body below the hot air outlet, and a fan that generates hot air in the main body. and an electric range characterized in that an adjustment device is provided to variably adjust the heating area of the hot air to the cooking pot.