JPS63201427A - Heating apparatus - Google Patents

Abstract

PURPOSE:To obtain a stabilizedly operated heating apparatus of safety and of long life, by installing electric parts in the way of an exhaust passage which connects the exhaust port provided on the front of the outer casing of an apparatus to a motor fan. CONSTITUTION:An outdoor air sucked from an suction air inlet opening 22 forcibly cools the motor 8 to drive a rotary table 9 installed in the middle of a suction air passage 21, getting to a motor fan 16, passing through an air port 23 provided at the back bulkhead 19. At that time the heated air in the partitioned spaces 20 on both sides of a heating chamber 2 is also vented out. The outdoor air sucked from a suction air inlet opening 24 joins in the outdoors air sucked from the suction air inlet opening 22 in the back space partitioned by a motor fan 17 and the back bulkhead 19, and the air is discharged to the front of a heating apparatus body from an exhaust port 13 after it forcibly cools the terminal of an electric heater 7, a controller 10, and other electrical parts. The motor 8 and the terminal of an electric heater 7 are cooled forcibly in such a manner that a highly reliable and long-usable heating apparatus can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heating device called an electric oven or a high-frequency heating device with a heater.

(Prior Art) A conventional heating device will be explained with reference to FIGS. 3 and 4.

FIG. 3 is a partially transparent perspective view of a conventional heating device. The heating device includes a heating chamber 2 in which food is stored and cooked inside an outer shell 1 of the main body, and a heating chamber 2 for storing food to be cooked. From a door 3 that can be opened and closed to cover the front opening of the heating chamber 2, and an operation panel 4 on which operation switches, display tubes, etc. are installed, which is placed above the door 3 on the front surface of the main body outer shell 1. It is configured.

FIG. 4 is a side sectional view of the heating device. In the heating chamber 2, a partition plate 5 that divides the interior of the main body outer shell 1 into upper and lower halves is used as a ceiling plate, and the door 3 is used as a heating panel. Door attachments, which are fixed to the front opening of the chamber 2, the side plates of the main body shell 1, and the front edge of the bottom surface, are attached to the plate 6 so as to be openable and closable. A plurality of electric heaters 7 are installed near the ceiling and floor of the heating chamber 2, and a rotary table 9, which is driven by an electric motor 8 installed under the floor and rotates with cooked food placed thereon, is installed on the floor. It is located.

In the upper section formed by the partition plate 5 in the outer shell 1 of the main body, a control device i for controlling electric components such as the electric heater 7 and the electric motor 8 is installed inside the operation panel 4 installed in the front.
10 is attached to the main body shell 1, and is cooled by a motor fan 12 installed in front of a plurality of air intake ports 11 provided on the back plate of the main body outer shell 1 to prevent overheating. As can be seen by the multiple arrows indicating the ventilation path, the air intake port 1
The outside air sucked in from 1 cools the control device 10 and other electrical components, and is discharged forward from an exhaust port 13 formed between the operation panel 4 and the door mounting plate 6.

Returning to FIG. 3, in order to exhaust the hot air from the compartment 14 that isolates the heating chamber 2 from the main body outer shell 1 at the lower part of the partition plate 5, exhaust louvers 15 are installed at the top of both side plates constituting the compartment 14. It is a provision.

The operation of the heating device configured in this way will be explained.

When food to be cooked is placed on the rotary table 9 by opening and closing the door 3 and operating the operation switch on the operation panel 4, the temperature of the heating chamber 2 is raised by the electric heater 7 which has reached a high temperature, and one food item is heated and cooked. be done.

The temperature of the upper part divided by the partition plate 5 rises due to the hot air in the heating chamber 2, so the motor fan 12 closes the air inlet 11.
While more outside air is sucked in and exhausted from the front exhaust port 13, the control device 10 and other electrical components in this compartment are cooled to prevent their temperature from rising.

Similarly, the temperature of the compartment 14 surrounding the heating chamber 2 rises due to the hot air, but the heated air is discharged from the exhaust louvers 15 provided on both sides of the outer shell 1 of the main body, and as a result, the terminals of the electric heater 7 and This prevents the electric motor 8 of the rotary table 9 from overheating.

(Problems to be Solved by the Invention) However, in the above configuration, hot air from the compartment 14 is exhausted from the exhaust louver 15 on the side.

If the heating device is installed in close contact with a wall by mistake, there is a problem in that exhaust air is insufficient and the terminals of the electric heater 7 and the electric motor 8 of the rotary table 9 are overheated, resulting in a shortened service life. Further, if heating and cooking are repeated for a long time in such a state, there is also a problem that the wall surface may be deformed or discolored. Furthermore, since the heat dissipation conditions of the heating chamber 2 change, there is also the problem that the quality of cooking is also affected.

The present invention solves the above-mentioned problems, and provides a heating device with stable performance, safety, and long life, which has no restrictions on installation location.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an air intake port on the lower surface of the outer shell of the main body, and connects the electric motor of the one-turn table to the air intake port that connects the air intake port and the motor fan. The controller is placed in the middle of the air path, and the control device and other electrical components are placed in the middle of the exhaust air path that connects the motor fan and the exhaust port provided on the front surface of the outer shell of the main body.

(for production) With the above configuration, the electric motor of the rotary table is.

Forced cooling is performed by outside air sucked in from the intake port on the bottom side by a motor fan, so it is effectively forcedly cooled regardless of the installation position of the heating device, so there is no overheating.
The wear and deterioration of the grease that lubricates the bearings of the electric motor is prevented, extending its life and therefore improving its reliability.

Also, by connecting the two side compartments, which are made up of both side plates of the heating chamber and both side inner walls of the main body outer shell, with the above-mentioned intake passage, the hot air is also exhausted, so the sides of the heating device should not be in contact with the wall surface, etc. It can also be installed in a closed state, reducing the area required for installation and making it possible to save space. Furthermore, a wall-embedded heating device can also be realized.

(Embodiment) An embodiment of the present invention will be explained with reference to FIGS. 1 and 2. Components of the heating device according to the present invention that have the same functions as those of the conventional example are given the same reference numerals and simplified. Proceed with the explanation while evolving.

FIG. 1 is a side cross-sectional view of a heating device according to the present invention.
, a door 3 provided at the front opening of the heating chamber 2, and an operation panel 4 provided inside with a control device 10 for controlling cooking heating.
and two motor fans 16 and 17 arranged at the rear of the heating chamber 2 described above.

FIG. 2 is a rear sectional view taken along a plane including the center line of the motor fans 16 and 17 in FIG. to,
The back plate extends and is fixed to the inner wall and bottom of the main body outer shell 1 to form a top partition 18 and a rear partition 19, and the left and right compartments 20 that communicate with each other and the intake air passage 21 shown in FIG. It is formed. Furthermore, returning to Figure 1,
At the front of the intake air passage 21, a plurality of intake ports 22 are provided on the lower surface of the main body outer shell 1, and at the rear, as shown in FIG. Ventilation port 23
are each open.

Returning to FIG. 2 again, a plurality of air intake ports 24 are provided on the lower left rear surface of the main body shell 1 when viewed from the front, and open to supply outside air to the motor fan 17.

Note that rubber legs 25 are attached to the four corners of the lower surface of the main body outer shell 1.

The operation of the heating device configured in this way will be explained.

The procedure for cooking food using the heating device is the same as in the conventional example, so the explanation will be omitted. M-transformed during cooking 2
The motor fans 16 and 17 of the stand suck in outside air through intake ports 22 and 24 provided on the lower surface of the main body outer shell 1, respectively. As shown by the arrow in FIG. 1, the outside air sucked in from the intake port 22 forcibly cools the electric motor 8 for driving the rotary table 9 installed in the middle of the intake air path 21.
The hot air reaches the motor fan 16 through the ventilation hole 23 provided in the rear partition 19, but at this time, the hot air from the compartments 20 on both the left and right sides of the heating chamber 2 shown in FIG. The temperature of the chamber 20 also decreases.

As shown by the arrow in FIG. 2, the outside air sucked in through the intake port 24 is joined by the outside air from the above-mentioned intake port 22 at the rear surface partitioned by the rear partition 19 by the motor fan 17, and the terminals of the electric heater 7 After forcibly cooling the parts, control device 10, and other electrical components, they are discharged to the front of the heating device through the exhaust port 13 shown in FIG.

In this way, the terminal portions of the electric motor 8 and the electric heater 7 are also forcibly cooled, so that deterioration of performance due to temperature increases is prevented, quality is ensured, and reliability is improved.

In addition, since the hot air between the main body outer shell 1 and the heating chamber 2 is forcibly removed, a temperature rise is suppressed. are provided on the front side of the heating device, so it is possible to install the heating device in close contact with a wall surface.

(Effects of the Invention) As explained above, according to the present invention, an intake port for forced cooling is provided on the bottom of the heating device, and the electric motor for driving the rotary table and the electric heater, which were conventionally left to natural heat dissipation, can be used. Since the terminals and other electrical parts are also forcedly cooled, it is particularly effective in preventing evaporation and leakage of lubricating grease in the motors mentioned above, as well as preventing deformation and deterioration of component materials caused by heat. , a highly reliable and long-life heating device can be obtained.

In addition, the temperature rise of the outer shell of the main body is suppressed, and the air intake is provided on the bottom, and the outside air for cooling is supplied from the gap between the legs and the floor, so the heating device can be placed in close contact with the wall. It can be installed or embedded in a wall. Therefore, it is possible to save space.

In addition, since the temperature of the outer shell of the main body does not rise, it is a safe heating device that does not cause a fire explosion even if touched during cooking.

[Brief explanation of the drawing]

1 and 2 are a side sectional view and a back sectional view, respectively, of a heating device according to the present invention, and FIGS. 3 and 4 are a perspective view and a side sectional view, respectively, of a conventional heating device. 1... Body outer shell, 2... Heating chamber, 3... Door, 4... Operation panel, 5... Partition plate, 6...
・Door mounting plate, 7...Electric heater, 8...Electric motor, 9...Rotary table, lO...Control device,
11.22.24...Intake port, 12,16.1
7...Motor fan, 13...Exhaust port, 14.
20... Compartment, 15... Exhaust louver, 18...
・Top partition, 19...Rear partition, 21...
Intake air passage, 23...ventilation port, 25...leg. Patent applicant Matsushita Electric Industrial Co., Ltd. Figure 1 1 Mosquito outside the forest 2-1 Ka M1! 3-door 4-panel panel 2 electric heating 8-0 genji 9-rotary table 10-separate #113-exhaust port 16.11 fan-921=ff and 9 air passage n-intake On-Kanouguchi 25. , J Figure 2 1-6 Body dispersion 2-Focusing! 10. -Control unit 1+6.1
7 ++ Momo-fan 18- Domen Ishikiri 1! L, f
&flllli±t71'j 20-, M! 21-
, @Each for tip 23-Nol turtle mouth 25-Leg Figure 3 1-5A External mosquito 2-Heating! 3-=Door 4-"Kuri Azusa Spring 5-I±L No Saitai 12 +++Fan t-ri
14-PM! 15-PgL, Louva

Claims (1)

[Claims] A heating chamber provided inside the outer shell of the main body for storing and cooking food, a door that can be opened and closed to cover the front opening of the heating chamber, and an operation panel provided above the door on the front of the main body. ,
The electric heater that raises the temperature inside the heating chamber, the rotary table on which food is placed, which is driven by the electric motor installed in the heating chamber, and the operation panel that controls the electric heater, electric motor, and other electrical parts. In a heating device equipped with a control device installed inside the main body and a motor fan for cooling the control device, etc., the intake port of the motor fan is provided on the lower surface of the outer shell of the main body, and the intake port and the motor fan are connected. The above-mentioned electric motor for driving the rotary table is installed in the middle of the intake air path, and the above-mentioned control device and other electric motors are installed in the middle of the exhaust air path that connects the exhaust port provided between the operation panel and the door and the motor fan. A heating device characterized by arranging parts.