JP2009165643A5 - - Google Patents

Claims (13)

An inner pot in which an object to be heated is placed, and a lower housing that stores water for cooling the steam generated from the object to be heated, and stores a water tank to be recovered by condensing the steam;
An inner lid that covers the inner pot so as to be freely opened and closed, and in which a hole for discharging steam generated from the heated object is formed;
A steam conduit communicating the inner lid and the water tank ;
A rice cooker comprising: a backflow prevention mechanism that is provided in the steam conduit and prevents water stored in the water tank from flowing from the water tank side toward the inner pot side. The backflow prevention mechanism is
An outside air communication hole in which a part of the steam conduit is opened;
A valve body that covers the outside air communication hole so as to be freely opened and closed,
The valve body is
2. The rice cooker according to claim 1, wherein when the pressure in the inner pot falls below atmospheric pressure, the outside air communication hole is opened by the pressure difference. The backflow prevention mechanism is
It consists of a valve body that opens and closes the steam flow path inside the steam conduit,
The valve body is
The rice cooker according to claim 1, wherein when the pressure in the inner pot rises to atmospheric pressure or higher, the steam conduit is opened by the pressure difference. The valve body is
It is urged | biased in the direction orthogonal to the steam flow path inside the said steam conduit. The rice cooker of Claim 3 characterized by the above-mentioned. The backflow prevention mechanism is
A first valve body for opening and closing a steam flow path inside the steam conduit;
An outside air communication hole in which a part of the steam conduit is opened;
A second valve body that covers the outside air communication hole so as to be freely opened and closed,
Urging the first valve body in a direction perpendicular to the steam flow path inside the steam conduit;
The first valve body is
When the pressure in the inner pan rises above atmospheric pressure, the steam conduit is opened by the pressure difference,
The second valve body is
2. The rice cooker according to claim 1, wherein when the pressure in the inner pot falls below atmospheric pressure, the outside air communication hole is opened by the pressure difference. The flow path cross-sectional area of the steam conduit and the opening area of the outside air communication hole are at least larger than the particle size of the rice accommodated in the inner lid. Crab rice cooker. The said valve body, the said 1st valve body, and the said 2nd valve body are comprised by the flexible material at plate shape. The rice cooker in any one of Claims 1-6 characterized by the above-mentioned. The rice cooker according to claim 7, wherein the valve body, the first valve body, and the second valve body are provided in the steam conduit in a cantilever shape. 9. A protrusion is formed in a part of the valve body, the first valve body, and the second valve body, and a hole for press-fitting the protrusion into the steam conduit is formed. Rice cooker as described in. The rice cooker according to any one of claims 1 to 9, wherein one side or a diameter of the cross section of the steam conduit is 20 mm or more. The rice steamer according to any one of claims 1 to 10, wherein the steam conduit and the water tank are made of a permeable material. The backflow prevention mechanism,
The rice cooker according to any one of claims 1 to 11, wherein the rice cooker is provided at a position that is always higher than the position of the water surface when the water tank in which a predetermined amount of water is stored is tilted. The backflow prevention mechanism,
The rice cooker according to claim 12, wherein the water tank is provided at a position that is always higher than a position of the water surface when the water tank is inclined at least 10 degrees.