JPS5934816Y2 - oven range - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a microwave oven with an improved shape of the outlet for circulating hot air.

An inlet and an outlet are provided on the side wall of the heating chamber of the high-frequency heating device, a fan casing is attached to the side wall of the heating chamber, a fan and a heater are provided inside the fan casing, and hot air is supplied to the heating chamber and the fan casing. Microwave ovens are known that heat and cook food by circulating between

Generally, as shown in FIG. 1, this microwave oven is provided with a heating chamber 2 inside a main body 1, and a fan casing 3 is provided between a side wall 2a of the heating chamber 2 and a side wall 1a of the main body 1. installed.

A fan 4 and a heater 5 are provided inside the fan casing 3, and the fan 4 is connected to the side wall 1a of the main body 1.
It is rotated by a fan motor 6 provided in the heating chamber 2, and hot air is sent into the heating chamber 2 to cook the food 7.

For this purpose, a shelf 8 on which the food 7 is placed is rotated by a motor 9 provided at the bottom of the heating chamber 2.

Further, a door body 10 is provided on the front surface of the main body 1 so as to be openable and closable.

Further, in the conventional microwave oven, the side wall 2a of the heating chamber 2 is provided with a suction port a having a large number of punched holes in the center of the side wall 2a of the heating chamber 2, as shown in FIG. On both sides of the suction port a, there are air outlets formed of a large number of punched holes in the vertical direction of the side wall 2a.

b is provided, and the air sucked into the fan casing 3 through the suction port a is blown out into the heating chamber 2 through the blow-off ports b and b to heat the food 7.

By the way, the air in the heating chamber 2 sucked in from the suction port a flows to the left or right and is blown out from the left or right air outlet, and from the part A or B surrounded by the two-dot chain line in FIG. Since the hot air is not blown out, the hot air flows horizontally but not vertically.

As a result, as shown in Fig. 3, the hot air concentrates in the shaded area C9C, causing uneven cooking, and the temperature distribution in the heating chamber 2 is as shown in Fig. 4. was relatively low.

This idea was devised in consideration of the above circumstances, and its purpose is to provide a large number of circular punching holes in the center of the side wall of the heating chamber as suction ports, and to create an annular hole surrounding this circular suction port. The present invention aims to provide a microwave oven in which the temperature distribution within the heating chamber is made uniform by providing a large number of punching holes to serve as air outlets.

An embodiment of this invention will be described below based on the drawings.

Reference numeral 11 in FIGS. 5 and 6 denotes a circular suction port consisting of a large number of punching holes 12 provided approximately at the center of the side wall 2a of the heating chamber 2 facing the fan 4. As shown in FIGS. 5 and 6, a circular or square air outlet 13 is provided in an annular shape.

The air outlet 13 is also configured with a large number of punching holes 14.

Therefore, the total area of the punching holes 14 forming the air outlet 13 is smaller than the total area of the punching holes 12 forming the suction port 11.

As in the above embodiment, since the total area of the punching holes 14 forming the air outlet 13 is made smaller than the total area of the punching holes 12 forming the suction port 11,
The heat is injected from the punched hole 14 and reaches the vicinity of the door body 10, which has the effect of making the temperature distribution in the heating chamber uniform.

As explained above, a circular suction port is provided on the side wall of the heating chamber where the fan casing is attached, facing the fan, and an annular air outlet is provided around this circular suction port. By uniformly blowing hot air into the heating chamber, the temperature inside the heating chamber can be made uniform, and as shown in FIG. It can be eliminated.

[Brief explanation of drawings]

Figure 1 is a vertical side view of a general hot air circulation type oven range, Figure 2 is a front view of the side wall of a conventional heating chamber, Figure 3 is the same (cross-sectional plan view of a conventional heating chamber, Figure 4 is the same) A front view showing the temperature distribution in a conventional heating chamber, FIGS. 5 and 6 are front views of a heating chamber according to an embodiment of this invention, and FIG. 7 is a front view of a heating chamber according to an embodiment of this invention. . 1...Main body, 2...Heating chamber, 2a...
...Heating chamber side wall, 3...Fan casing, 4...Fan, 5...Converter, 11.
...Suction port, 13...Blowout port.

Claims (2)

[Scope of utility model registration request] (1) A fan casing that includes a main body, a heating chamber provided inside the main body and equipped with an inlet and an air outlet on a side wall, and a fan provided inside the side wall of the heating chamber and a heater surrounding the fan. A microwave oven characterized in that the air outlet is formed by a large number of punched holes, and the air outlet is provided so as to annularly surround a suction port formed of a large number of punched holes. (2) The microwave oven according to claim (1) of the utility model registration, characterized in that the area of the air outlet is smaller than the area of the suction port.