JPH02272221A - Heating cooker - Google Patents

Abstract

PURPOSE:To enable a two-stage heating at a compact fan chamber to be carried out without any irregular heating by a method wherein a slant part is arranged at an upper part and a lower part of a rear surface of a heating chamber and a similar slant part is arranged at a rear surface of a fan chamber. CONSTITUTION:As a circulating fan 4 is rotated by a circulation fan motor 4A, air is sucked from a central part of the circulation fan 4 and blown out from an upper part and a lower part of the circulation fan due to the fact that the circulation fan 4 is a turbo-fan. A rear wall 12 of a heating chamber 1 is provided with small holes 16 for use in discharging gas as well as sucking gas at an upper part, a central part and a lower part of the rear wall 12. Air blown from the circulation fan 4 is flowed along a slant part B15, flows along a slant part B13, flows near an upper wall 17 and a bottom wall 15 of the heating chamber, the gas passes past a rear part of a door 19 which can be opened or closed for use in loading or unloading a heated item, the gas is sucked from the central part of the heating chamber 1 to the central part of the circulation fan 4 and then air within the heating chamber 1 is circulated. At this time, since the upper wall 17 and the bottom wall 15 are sufficiently heated by the heaters 2 and 3, resulting in that this heat can be carried to the central part of the heating chamber 1 through removal of this heat and so a temperature difference within the heating chamber 1 is substantially reduced and then the heated item is uniformly heated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention performs so-called open heating, in which cooking is performed by raising the temperature inside a heating chamber, in two substantially rectangular dishes using a circulating fan.
The present invention relates to a method for evenly heating stages at the same time, and to a compact fan chamber housing a circulation fan.

2. Description of the Related Art Conventionally, there is a device that provides a heater in a fan chamber equipped with a circulation fan, blows hot air into the heating chamber, and heats objects to be heated in two stages at the same time. However, with this device, the area near the outlet was strongly heated, resulting in uneven baking. As a means of solving this problem, there is a device that rotates the plate on which the food is placed, but this has the disadvantage that the plate becomes circular and the number of foods that can be heated is small relative to the size of the heating chamber.

As a device to solve these problems, a device as shown in FIG. 2 was also considered. That is, heaters 2.3 are provided on the upper and lower outer walls of the heating chamber 1, a fan chamber 6 with a circulation fan 4 is provided at the rear of the heating chamber 1, and a circulation fan 4 is provided at the bottom of the lower plate 6 and above the upper plate 7. Heating chamber 1 The central part of the can be heated.

For this purpose, it is essential to send sufficient air to the lower part of the lower plate 6 and the upper part of the upper plate 7.

Problems to be Solved by the Invention With such a configuration, the fan chamber 5 needs to be at the same height as the heating chamber 1, and the volume of the fan chamber 6 must be large, so that the heat of the heater 2.3 is In addition, in complex heating cookers that can also perform high-frequency heating, there is a problem that there is no space to accommodate the electrical components for performing high-frequency heating, and the main body becomes large.

Therefore, the first object of the present invention is to heat a square plate evenly in two stages in a compact fan chamber.

The second purpose is to provide a compact main body in a composite heating cooker that has high frequency heating both above and below the fan chamber, by accommodating electrical components necessary for high frequency heating.

Means for Solving the Problems The present invention, which achieves the first object described above, is such that sloped portions are provided above and below the rear surface of the heating chamber, and the rear surface of the fan chamber is also provided with sloped portions similar to those described above.

In addition, in order to achieve the second objective, a space is provided in a portion other than the fan chamber to house components for high-frequency heating (a cooling fan, a high-voltage transformer), and the like.

Effects According to the present invention, with the above configuration, the air blown from the circulation fan flows along the slope of the rear wall of the fan chamber, and further flows along the slope of the rear wall of the heating chamber, so that a compact fan chamber can be created. However, sufficient air is sent to the bottom of the bottom plate and the top of the top plate. Therefore, the heat is taken from the heaters installed on the upper and lower outer walls of the heating chamber and returned to the center of the heating chamber.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In Figure 1, heaters 2 are installed on the upper and lower outer walls of heating chamber 1.
．． 3, and a fan chamber 6 having a circulation fan 4 is provided at the rear of the heating chamber. In the heating chamber 1, a lower plate 6 on which an object to be heated (not shown) is placed and an upper plate 7 are arranged, and the lower plate 6 allows the wind from the circulation fan 4 to pass around the lower plate 6. It is designed to rest on a shelf 8 made of wire mesh. A turn tape/L'10 that can be rotated by a turntable motor 9 used during high frequency heating is arranged at the bottom of the heating chamber 1. A weight sensor 11 is attached below the turntable motor 9 to measure the weight of the object to be heated during high-frequency heating, so that the heating time can be automatically determined. At the top and bottom of the rear wall 12 of the heating chamber 1, inclined portions A13 facing toward the front side of the heating chamber 1 are provided. Also, similar sloped portions B15 are provided above and below the rear wall 14 of the fan chamber 6, and sloped portions A13 and B
16 are shaped so that the slopes are almost the same.

In the above embodiment, when the circulation fan 4 is rotated by the circulation fan motor 4A, since the circulation fan 4 is a turbo fan, it sucks in air from the center of the circulation fan 4 and blows it out from above and below. The rear wall 12 of the heating chamber 1 has small holes 16 for intake and exhaust.
are provided at the top, center, and bottom of the rear wall 12. The air blown out from the circulation fan 4 flows along the inclined part B15, and further along the inclined part B13, near the top wall 17 and bottom wall 18 of the heating chamber, which can be opened and closed to take in and take out the heated object. The air inside the heating chamber 1 is circulated through the rear part of the door 19 and drawn from the center of the heating chamber 1 into the center of the circulation fan 4.

At this time, since the upper wall 17 and the bottom wall 18 are heated by the heaters 2 and 3, this heat can be taken away and carried to the center of the heating chamber 1, so the temperature difference in the heating chamber 1 is almost eliminated, and the heated The heated object is heated evenly.

Here, there is an important point in order to uniformly heat the object to be heated. - The point is that the blown out wind and the inhaled wind do not interfere.

Also, the air blown near the heater 2.3 must flow sufficiently, and there must be enough space in the center. In the present invention, the air resistance in the heating chamber 1 is small due to the slope portion A13 and the slope portion B1es, and the air in the heating chamber 1 can be circulated. 20 is a high voltage transformer for performing high frequency heating;
Further, 21 is a cooling fan motor for cooling the electrical parts.

Effects of the Invention As described above, the present invention provides a compact fan by providing an inclined portion facing the front side of the heating chamber on the rear wall of the heating chamber, and further providing an inclined portion similar to the above on the rear wall of the fan chamber. It is possible to heat food, etc. on two upper and lower plates in a room without uneven heating.

Furthermore, because the fan chamber is compact, electrical components for high-frequency heating can be housed in a large space above and below the outside of the fan chamber.

Furthermore, because of the inclined portion, the circulation mechanism becomes smaller, allowing the circulation fan and circulation fan motor to be made smaller.

Furthermore, since the air flows sufficiently downward without any loss, the lower plate can be lowered sufficiently even in a compact fan room, and the gap between the lower plate and the upper plate increases, allowing large-capacity heated items to be heated in the lower tier. It can be heated on a plate.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of one embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view of a conventional embodiment. 2.3...Heater, 4...Circulation fan, 6...Fan chamber, 13...Slope part A, 15...Slope Name of the representative: Patent attorney Shigetaka Awano and one other person Figure 12

Claims (2)

[Claims] (1) A heating chamber, a heater that increases the temperature in the heating chamber, a circulation fan that circulates the air in the heating chamber, and a small blowing hole that accommodates the circulation fan and communicates with the heating chamber. and a fan chamber having a small hole for suction in the center, the heater is disposed outside the upper and lower heating walls of the heating chamber, and the fan chamber is disposed at the rear of the heating chamber,
A heating cooking device, wherein inclined portions facing toward the front side of the heating chamber are provided on the upper and lower sides of the rear wall of the heating chamber and the rear wall of the fan chamber, respectively. (2) The cooking device according to claim 1, further comprising a cooling component provided in the upper and lower space outside the fan chamber.