JPH0572206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rice cooking device used in general households.

(Prior Art) A conventional rice cooking device of this type will be explained with reference to FIG. This figure is a cross-sectional view of the main parts of a rice cooking device using Utility Model Application Publication No. 60-57323 as an example. It is composed of a lid 3. The lid 3 is composed of a bun-shaped top cover 4 and a back plate 5 fixed to the inner periphery of the top cover 4. Further, the top cover 4 is provided with an arch-shaped handle 6.

The back plate 5 has columnar engagement protrusions that slidably fit into the through holes of the plurality of engagement pieces 8 fixed to the inner cover 7 and support the inner cover 7 when the cover 3 is opened. 9
Further, a lid heater 10 is disposed in the center, which is biased downward by a compression coil spring and is always in contact with the inner lid 7.

The upper surface cover 4 is provided with an operation section 11, the inside of which is partitioned by a waterproof partition wall 12 formed on the back surface of the above-mentioned back plate 5.
3, and an operating unit 14 is housed therein. The operation unit 14 includes an operation switch 16 with a push button 16a, a display light emitting diode 17, and a rice cooking control circuit electronic component 18 arranged on a substrate 15, and is formed downward on the inner surface of the top cover 4. Machine screws 19 are fixed to the plurality of mounting bosses, and the push button 16a and the display light emitting diode 17 are fixed to the two openings 20 and 21 provided in the operation section 11 of the top cover 4.
is fitted so that its top surface is flush with the top cover 4. Furthermore, a display plastic sheet 22 on which characters such as "cooking rice" and "keep warm" are printed is attached to the operation unit 11 with double-sided adhesive tape or the like. The top cover 4 has
A steam vent hole 23 is provided on the opposite side of the handle 6 from the operation part 11, for discharging steam generated in the inner pot 1 during rice cooking to the outside of the device.

(Problems to be Solved by the Invention) However, in the above configuration, the operation section 11 is arranged on the top cover 4 of the lid 3, and the operation unit 14 attached thereto is an electrical component isolated inside the lid 3. The electric component compartment 13 corresponds to a portion of the rice cooking device where the temperature is relatively high due to heat conduction and convection during rice cooking. The operation unit 14, which is composed of the substrate 15, the display light emitting diode 17, and the rice cooking control circuit electronic component 18, has a problem in that it frequently breaks down due to the high ambient temperature. In addition, the lid 3 is composed of a top cover 4 on which a handle 6, an operation part 11, and a steam vent hole 23 are arranged, and a back plate 5 on which an inner lid 7 and a lid heater 10 are attached, so that the joints of each part are Gaps are likely to form, so steam can leak into the electrical equipment room 13.
There was also the problem that the operating unit 14 was easily damaged when inserted into the machine.

Furthermore, since the steam vent hole 23 is open upward, there is a risk of getting burned if the steam vent comes into contact with high-temperature steam.

The present invention solves the steam problem and eliminates failure of the operating unit due to temperature rise and steam intrusion. To provide a rice cooking device with excellent operability and without the risk of getting burned.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a steam exhaust passage having a backflow device arranged inside the lid so that a steam vent hole opens in the middle. established,
The intake port is provided on the outer surface of the lid near the operating section, the exhaust port is provided on the front surface of the lid, and the circuit section is disposed between the steam vent hole and the intake port in the steam exhaust passage.

(Function) With the above configuration, the operating section is arranged near the intake port of the steam exhaust passage through which outside air is forced to pass through by the blower, and the circuit section connected to this and arranged inside the steam exhaust passage is Since the rice is constantly cooled with fresh outside air, the temperature is prevented from rising even during cooking, and damage to the circuitry due to temperature rise is prevented. Further, since the steam is forcibly discharged by the blower, failures due to moisture in the circuit section are also prevented.

Furthermore, the high-temperature steam discharged from the steam vent hole mixes with outside air to become low-temperature steam and is discharged from the front of the lid, eliminating the risk of getting burned if you come into contact with it.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 is a perspective view showing the appearance of the rice cooking device according to the present invention. The rice cooking device consists of a top surface of the device main body 2 and a lid 3 that can be opened and closed, which is pivoted on the rear side, and a rice cooking process is set near the left side. On the front surface of the lid 3, there is an operation section 11 that displays the necessary information for cooking and performs operations for setting the rice cooking process.
1, an intake port 24 is provided at the bottom, and an exhaust port 25 is provided on the right side.

FIG. 2 is a side sectional view of the rice cooking device shown in FIG. 1. In the device main body 2, a heating element 26 is provided at the bottom of an inner pot housing cavity whose upper surface is open, and the inner pot 1 is detachably housed in the inner pot housing cavity so as to be placed on the heating element 26. The lid 3 is rotatably supported by a support shaft 27 provided on the rear side of the device main body 2, and the lid 3 is connected to a partition plate 2 provided between the upper air cover 4 and the back plate 5.
It is divided into upper and lower parts by 8. The above-mentioned back plate 5 slidably supports the inner lid 7 with a columnar engagement protrusion 9 planted in the center of the back surface, and has a heat-retaining heating element 29 on the inner surface.
is installed. The space between the partition plate 28 and the back plate 5 is filled with a heat insulating material 30.

As shown in the plan sectional view of FIG. 3, in the upper space constituted by the upper cover 4 and the partition plate 28, a steam exhaust passage 32 is constituted by a spiral partition 31, and a steam exhaust passage 32 is formed in the middle thereof. A horizontal blocking platform 33 is provided in a part of the partition wall 31 to prevent the high temperature steam discharged from the top cover 4 from directly hitting the top cover 4. Further, a blower device 34 is provided at the center of the spiral of the partition wall 31. Returning to FIG. 2, the front surface of the top cover 4 where the operating section 11 is provided and the partition plate 2 described above are shown.
8 and a partition wall 31 has an intake port 24 at the bottom that communicates with the steam exhaust passage 32 described above.
A circuit section 35 containing electronic components for controlling the rice cooking process is housed in the upper part, and is connected to the operation section 11 described above.

The operation of the rice cooking device configured in this way will be explained. First, the inner pot 1 containing rice and water is inserted into the inner pot receiving cavity of the main body 2 of the apparatus, placed on the heating element 26, and the lid 3 is operated to seal the inner pot. Next, the operation section 11
When the switch is turned on and power is applied to the heating element 26, rice cooking starts. When the temperature of water rises, the steam generated is
The steam is led to the steam exhaust passage 32 through the steam vent hole 23 . In the steam exhaust passage 32, outside air flows from the intake port 24 toward the exhaust port 25 by the action of the blower 34, and the high-temperature steam discharged from the steam vent hole 23 mixes with the outside air, and some of it becomes dew. The remaining part becomes low-temperature steam and is discharged from the discharge port 25 toward the front of the rice cooker. Note that the high-temperature steam coming out of the steam vent hole 23 hits the heat shield table-shaped part 33 provided on the partition wall 31 and does not hit the top cover 4 directly, so the top cover 4 is not overheated. Further, since the electrical component room 13 is located near the air intake port 24 and fresh outside air passes through it, the circuit section 35 housed therein is always air-cooled and its temperature does not rise.

(Effects of the Invention) As explained above, according to the present invention, the operation section and the circuit section provided on the lid of the rice cooker are always air-cooled with low-temperature outside air by the function of the blower device during rice cooking. , it is not affected by the heat from cooking rice. Therefore, the circuit section that controls the rice cooking process is prevented from malfunctioning due to temperature rise. In addition, the direction of the airflow in the steam exhaust passage generated by the blower is the direction that directs the steam in the steam vent hole away from the operating section and the circuit section, so the steam does not enter the circuit section. There is no risk that the parts will malfunction due to moisture. Furthermore, since the steam discharged from the exhaust port is mixed with outside air in the steam discharge passage and has a low temperature, there is no danger of causing burns. Furthermore, since the operating section is located on the lid, it is easy to see and easy to use. Therefore, according to the present invention, it is possible to obtain a rice cooking device that is not only excellent in reliability and durability, but also highly safe and easy to use.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a rice cooking device according to the present invention;
3 and 3 are a side sectional view and a plane sectional view showing the main parts of the lid, respectively, of the rice cooking device according to the present invention,
FIG. 4 is a front sectional view of a conventional rice cooking device. 1...Inner pot, 2...Device body, 3...Lid, 4...
...Top cover, 5...Back plate, 6...Handle, 7...
...Inner lid, 8...Engagement piece, 9...Column-shaped engagement protrusion, 1
0...Lid heater, 11...Operation unit, 12...Waterproof bulkhead, 13...Electrical component room, 14...Operation unit, 15...Board, 16...Operation switch, 16
a...Push button, 17...Light emitting diode for display, 1
8... Electronic parts for rice cooking control circuit, 19... Machine screw, 20, 21... Opening, 22... Plastic sheet for display, 23... Steam vent hole, 24...
Intake port, 25...Exhaust port, 26...Heating element, 27
... Support shaft, 28 ... Partition plate, 29 ... Heat-retaining heating element, 30 ... Heat insulating material, 31 ... Partition wall, 32 ...
...Steam discharge passage, 33...Heat shield platform, 34...
Air blower, 35...circuit section.

Claims (1)

[Claims] 1. A device body that houses an inner pot and has an open top;
A lid pivotally supported on one side of the main body of the device, an operation section disposed on the lid that displays the necessary display to set the rice cooking process, and performs operations for setting the rice cooking process, and this operation section. In a rice cooker equipped with a circuit unit that is connected to the lid to control the rice cooking process, and a steam vent hole, a steam exhaust passage with a blower device is provided inside the lid, and its intake port is connected to the operation portion near the blower device. A rice cooking device characterized in that a steam vent hole is disposed between an exhaust port opened on the front surface of a lid, and a circuit section is disposed between the steam vent hole and the intake port.