JPS6334236Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a heating cooker, and particularly to a cooling structure for a so-called composite heating cooker having a microwave oven function and an oven function.

Structure of Conventional Example and Its Problems Conventionally, there have been heating cookers that have not only a microwave oven function but also an oven function for browning the object to be heated.

Hereinafter, a conventional example will be explained using FIG. 1, FIG. 2, and FIG. 3. Hereinafter, the same members will be designated by the same numbers.

FIG. 1 is a perspective view of the conventional heating cooking device, FIG. 2 is a left side view of the conventional heating cooking device, and FIG. 3 is a sectional view of a main part of the conventional heating cooking device. The machine room 1 includes a high frequency oscillator 2 that generates high frequencies,
a transformer 3 that applies high voltage to the high frequency oscillator 2;
A cooling fan 4 for cooling these parts is housed, a door 6 provided in the front of the heating chamber 5 can be opened and closed freely, and a bottom plate 7 for supporting the main body is provided on the lower surface of the heating chamber 5. The main body is covered by an outer box 8. Further, on the left side of the heating chamber 5, there is a switch 10 operated by an arm 9 attached to the door 6, and the switch 10 turns on and off the power supply of the product by opening and closing the door 6. 11 is a ventilation hole provided on the side surface of the heating chamber 5.

In recent years, as products have become smaller, the machine room 1 has become smaller, and as products have become more multi-functional, the machine room 1 installed on one side of the heating chamber 5 cannot accommodate all electrical or functional parts. Various parts have come to be stored on opposite sides of the machine room 1. In the case of Fig. 2, a switch 1 opens and closes the power supply in conjunction with a door 6 provided at the front of the heating chamber 1.
0 is installed.

A cooker with only a microwave oven function will have a small temperature rise in the heating chamber 5, but a cooker with an oven function will have a maximum temperature of 300°C in the heating chamber 5.
The side surface of the heating chamber 5, which is not cooled by the cooling fan 4, relies on natural heat radiation from the ventilation holes 11 provided on the side of the product as shown in FIG. The switch 10 that operates in conjunction with the door 6 and the resin rollers necessary for the opening/closing mechanism of the door 6 must be made of materials with high heat resistance. Furthermore, as products have become more systematized, the cooling ventilation holes 11 provided on the sides of the products have become blocked, making cooling extremely difficult.

Therefore, there is a structure shown in FIG. 4 that solves the above problem, and will be explained below.

A heating chamber 5 is provided inside the outer box 8, and a compartment 12 is provided between the outer box 8 and the heating chamber 5. 13 is a magnetron, and 14 is an infrared heater supported on both side walls of the heating chamber 5, which heats the object from the surface and browns the object. An exhaust port 15 having a large number of small holes is formed on the back surface of the outer box 8. 16
is an outer box front panel located around the door 6, and the outer box front panel 16 includes the outer wall of the heating chamber 5 and the outer box 8.
A vent hole 17 communicating with the gap is bored.
Further, 18 is a vent hole on the bottom surface.

The operation of the high-frequency heating device configured as described above will be described below.

By the operation of the cooling fan 4, cooling air enters the compartment 12 from the vent 17, moves along the outer wall of the heating chamber 5 as shown by arrow a in the figure, cooling the outer wall of the heating chamber 5, and also cools the magnetron 13. , is exhausted from the exhaust port 15. On the other hand, the cooling air that entered the compartment 12 from the vent 18 also travels along the outer wall of the heating chamber 5, cooling the outer wall of the heating chamber 5, as shown by arrow b in the figure, cools the transformer 3 as well, and exits from the exhaust port 15. Exhausted. A part of the cooling air also enters the heating chamber 5 and is used for ventilation within the heating chamber 5.

However, according to the above-mentioned conventional configuration, although the functional parts in the compartment 12 are strongly cooled, the outer wall of the heating chamber 5 is also strongly cooled, which lowers the temperature in the heating chamber 5 more than necessary, causing heating. Room 5 will no longer be able to achieve its original purpose. In addition, since the exhaust port is on the side, there is a possibility that the exhaust port 15 will be blocked if it is installed in the system kitchen, which may reduce the cooling effect or even lead to overheating, which is dangerous. It lacks. Cooling air is sucked in from the heating chamber and compartments in two directions, top and bottom, making it difficult to balance the suction. Furthermore, since many holes are provided on the front surface, it has the disadvantage that the aesthetic appearance is impaired.

Purpose of the invention In view of the above-mentioned conventional drawbacks, the present invention provides a heating cooker having a microwave oven function and an oven function that can lower the functional parts in the compartment to a predetermined temperature without lowering the temperature of the heating chamber too much. It is something.

Structure of the invention The present invention includes a heating chamber for storing an object to be heated, a cooling fan for cooling various functional parts, a bottom plate for supporting the heating chamber, and an outer box for covering the main body. A machine room for housing the and the cooling fan is provided on one side of the heating chamber, and a compartment for housing other parts is provided on the other side of the heating chamber,
The space between the heating chamber and the bottom plate and the compartment are configured as a ventilation path for cooling air, and an exhaust port is provided in the upper part of the outer box, so that the space on the side of the heating chamber that does not have the cooling fan is By forcibly cooling the compartment by transmitting cooling air generated by a cooling fan installed in the machine room, the functions in the compartment can be maintained without lowering the temperature of the heating chamber too much. This lowers the temperature of the parts to a predetermined temperature.

DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 5 is a longitudinal cross-sectional view of a heating cooker having a built-in microwave oven function and an oven function, which is an embodiment of the present invention. In FIG. 5, an exhaust port 19 is provided in the upper part of the outer box 8, and 20 is a partition plate 20 that divides the compartment 12 in the upper part of the heating chamber 5 into left and right parts.

In the case of the present invention, cold air is sucked in from the intake port provided at the rear of the main body, and the cold air cools functional parts such as the magnetron 13 and transformer 3 in the machine room 1, and since there is no opening in the bottom plate 7, the cold air is heated. It flows into the compartment 12 where the switch 10 is housed through the compartment 12 between the chamber 5 and the bottom plate 7, and since there is no exhaust port on the side of the outer box 8, the switch 10 and other functional parts are After cooling, it is discharged to the outside of the container from an exhaust port 19 provided at the top of the outer box 8. At this time, the cooling air generated by the cooling fan 4 flows not only into the machine room 1 but also into the space above the heating chamber 5, so in order to avoid suppressing the air rising from the bottom of the heating chamber 5, A partition plate 20 is provided to divide the compartment 12 in the upper part of the heating chamber 5 into left and right parts, and the left side surface of the heating chamber 5 is configured as one compartment.

Furthermore, as shown in FIG. 6, if a partition plate 21 is attached to the side surface of the heating chamber 5 so that the air sent from the bottom of the heating chamber 5 is guided to the parts (switch 10) to be particularly cooled, the cooling air can be The flow will be organized and the effect will be greater. Furthermore, it is conceivable to attach the partition plate 21 by fixing it to the side surface of the heating chamber 5 by spot welding or the like, but this would leave spot marks inside the heating chamber 5, which would be unsightly in terms of appearance and would be difficult to work with. Therefore, as shown in FIG.
If the U-shaped partition plate 21 is fixed to the upper part with screws or the like, it can be easily attached.

With the above configuration, even if there is no exhaust port on the side of the main body, there is an exhaust port on the top of the main body, so it can be incorporated into the system kitchen as a built-in heating cooker. Moreover, since the partition plate is fixed at the upper part of the heating chamber, it can be easily attached.

Effects of the invention As explained above, according to the invention, the cooling air is sequentially sent into the compartments provided around the heating chamber and is discharged from the top of the main body, so the air whose temperature has risen relatively cools the functional parts. However, you can get enough air volume. A predetermined cooling effect can be obtained. Moreover, since the heating chamber having an oven function is not cooled more than necessary, the oven function does not deteriorate and thermal efficiency is improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional combined heating cooker having microwave oven function and oven function, Fig. 2 is a left side view of the conventional combined heating cooker, and Fig. 3 is a main part of a conventional covered heating cooker. FIG. 4 is a side sectional view of another conventional combined heating cooker, FIG. FIG. 7 is a left side view of the composite heating cooker which is an embodiment of the invention, and FIG. 7 is a perspective view of the upper left side of the composite heating cooker which is an embodiment of the invention. 1... Machine room, 4... Cooling fan, 5... Heating chamber, 6... Door, 7... Bottom plate, 8... Outer box, 10...
...Switch, 12... Compartment, 19... Exhaust port, 2
0,21...Partition plate.

Claims (1)

[Claims for Utility Model Registration] (1) A heating chamber for storing objects to be heated, a cooling fan for cooling various functional parts, a bottom plate for supporting the heating chamber, and an outer box for covering the main body, A machine room for storing some of the functional parts and the cooling fan is provided on one side of the heating chamber, a compartment for storing other functional parts is provided on the other side of the heating chamber, and the heating chamber and the bottom plate and the compartment are configured as ventilation paths for cooling air, and an exhaust port is provided in the upper part of the outer box. (2) The heating cooker according to claim 1, wherein the compartment between the upper part of the heating chamber and the outer box is divided into left and right sides by another partition plate. (3) The heating cooker according to claim 1, which is provided as a utility model, and is provided in correspondence with a switch in which a partition plate for guiding cooling air into the compartment is provided as a part of the functional parts. (4) The cooking device according to claim 2, wherein the partition plate is attached to the heating chamber upper structure.