JPS6131719Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pressure cooker, particularly to the structure of the lid.

In a pressure cooker that cooks by applying pressure to the inner container, the bubbles inside the inner container are more intense than in a cooker that cooks without applying pressure, so this foam causes the moisture in the inner container to adjust the pressure. It is more prone to boiling over than equipment.

Furthermore, since the temperature inside the pot is high due to the pressure applied, steam tends to condense on the lid etc. when the temperature drops.

On the other hand, the inner lid functions as a pressure regulator, a safety valve, and other protective functions.

As mentioned above, the above-mentioned problems cannot be solved by simply providing the lid structure of the pressure cooker with an inner lid like the conventional double-lid type rice cooker.

This invention solves the above problems,
Hereinafter, an embodiment in which the present invention is applied to a pressure rice cooker will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a cylindrical pot with a bottom, which is connected to an outer lid 3 via a ring-shaped packing 2 to form a closed pressurized cooking container. A pressure adjusting spigot 4 is attached to the outer lid 3 via a nozzle 5. Further, the safety device 6 is fastened to the outer lid 3 with a mounting screw 7, and a convex portion at the bottom of the safety device has a
An inner lid 9 is removably attached by a holder 8 made of silicone rubber. The inner lid 9 is formed by drawing a thin aluminum plate into a cylindrical shape with an open top and a bottom, and its diameter is smaller than the diameter of the opening of the pot 1, and the bottom is provided with a plurality of small holes for condensation. have. Further, a small gap (1.2 mm in the embodiment) is formed between the upper end of the inner lid 9 and the back surface of the outer lid.

The pressure adjusting screw 4 determines the normal rice cooking pressure in the container depending on its weight and the hole diameter of the nozzle 5.

If the nozzle 5 becomes clogged for some reason, the safety device 6 will prevent the nozzle 5 from becoming clogged due to the weight of the pressure adjustment screw 4 and the nozzle 5.
When the pressure inside the container rises above the specified pressure determined by the pore diameter, the inside of the pot is communicated with outside air to lower the pressure inside the pot. 10 is a body, 11 is a protective frame, 12 is a rice cooker switch, 13 is a heating plate, 14 is a thermostat, and 15 is a leg.

In the above configuration, when pressure cooking is performed, the pot 1
The upper layer of the bubbles become intensely bubbling, and some of the bubbles come into contact with the inner lid 9 and are crushed, while others pass between the outer lid 3 and the inner lid 9 and try to enter the inside of the inner lid. However, when the gap between the top of the inner lid and the back of the outer lid is small, as in the present invention, the bubbles are crushed here or suddenly exit into a wide space, disappearing, and become liquid when they enter the inner lid. It is becoming. Therefore, only steam is released from the nozzle 5 attached to the outer lid, and there is no boiling over of moisture, etc., and a good pressure state can be maintained in the pot.

Also, during rice cooking, the temperature inside the pot 1 increases due to pressure.
It is higher than the boiling point at atmospheric pressure, and when the temperature inside the pot 1 drops after cooking is completed, the steam in the pot 1 condenses. In particular, the outer lid 3 is easily cooled by the outside air, and a lot of dew adheres to the back surface of the outer lid. At this time,
If there is no gap between the top of the inner lid 9 and the back of the outer lid 3, all the dew on the outer lid will flow into the inner lid as the outer lid opens and closes, and when the lid is removed after cooking is complete, A large amount of dew drips from the surface. In the present invention, there is a small gap between the upper end of the inner lid and the back surface of the outer lid, so this drawback is eliminated.

On the other hand, if the diameter of the nozzle 5 is made larger than the gap between the upper end of the inner cover and the back surface of the outer cover, the nozzle 5
The risk of clogging is eliminated, and pressure cooking at a specified pressure becomes possible. In addition, even if the nozzle becomes clogged for some reason, it has a function that prevents the contents from entering through the gap between the top of the inner lid and the back of the outer lid, so it is a safety device that operates at a higher pressure. It also plays a role in preventing clogging.

As is clear from the above explanation, according to the present invention, the lid has a double structure of an outer lid and an inner lid that protects the pressure regulator, safety valve, etc., and the inner lid has a diameter smaller than the diameter of the opening of the pot. , and is configured in a bottomed cylindrical shape with an open top and attached to the back side of the outer lid, and when the upper opening of the pot is covered, a small gap is left between the top end of the inner lid and the back side of the outer lid. Because of this, the bubbles that are generated violently during pressure cooking can be crushed by the small gap, and the contents can be stored in the space formed between the outer lid and the inner lid. As a result, moisture etc. will not spill out from the nozzle of the pressure regulating device attached to the outer lid, or the nozzle will become clogged, and even after cooking is complete. Even the dew that adheres to the back of the outer lid can be quickly returned to the inside of the pot through the small gap formed between the inner and outer lids. It is also possible to prevent dew from dripping.

In addition, in the example, a uniform gap is provided at the upper end of the inner lid all around the circumference, but if it is unstable in relation to the detachable support structure, the curled portion at the upper end of the inner lid in Fig. 2 may be partially removed at three locations. A similar effect can be expected by crushing it to make it higher and making it contact the lower surface of the outer lid at this part.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a pressure cooker showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the gap between the upper end of the inner lid and the back surface of the outer lid. 1...Pot, 2...Packing, 3...Outer lid, 9
...Inner lid.

Claims (1)

[Scope of utility model registration request] In a pressure cooker that constitutes a sealed pressurized container with a bottomed cylindrical pot, a lid that covers the upper opening of the pot, and a ring-shaped packing interposed between the pot and the lid, the lid is external. It has a double structure of a lid and an inner lid that protects the pressure regulator, safety valve, etc., and the inner lid has a diameter smaller than the diameter of the opening of the pot and is configured in a bottomed cylindrical shape with an open top. Attach it to the back of the
A pressure cooker characterized in that when the upper opening of the pot is covered, a small gap is formed between the upper end of the inner cover and the back surface of the outer cover.