JPH022248Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pressure regulating device and a pressure display device for cooking utensils used in general households.

Conventional Structure and Problems Conventionally, in this type of cooking utensil, a pressure adjustment device is provided on the lid covering the top opening of the pot housed in the main body of the cooking utensil, and the pressure adjustment device is made of rubber or the like. Generally, a valve seat is made of an elastic body and a pressure regulating valve is made of metal or the like.

In this configuration, the internal pressure inside the pot is set to be constant due to the steam outlet opened in the valve seat and the weight of the pressure regulating valve. As a result, when the internal pressure in the pot exceeds the set value, the pressure regulating valve rises and opens the steam outlet in the valve seat, thereby lowering the pressure in the pot to the set value.

At this time, the sealing surfaces of the valve seat and the pressure regulating valve are pressed together by the weight of the pressure regulating valve. Pressure regulating valves are generally made of metal in many cases, and therefore have countless fine irregularities on their surfaces. On the other hand, the valve seat is generally made of rubber, and when it is pressed against it, it conforms to the minute irregularities on the surface of the pressure regulating valve and takes on the same shape as the irregularities. Therefore, a resistance force is generated when the pressure regulating valve is pulled away from the valve seat. Further, the sealing surfaces of the valve seat and the pressure regulating valve are not in full contact with each other, but only partially. In this non-contacting part, a large number of suction parts are generated due to a principle such as the sucking plate effect of rubber, and a suction force is generated between the two.

As mentioned above, the pressure inside the pot when the pressure regulating valve leaves the valve seat is due to the weight of the pressure regulating valve, the two resistance forces mentioned above, and the adsorption force, which is considerably higher than the set internal pressure. It becomes something big. In particular, when the temperature is maintained at a high temperature for a long period of time, the resistance force and adsorption force become large, and the amount of increase in the internal pressure at which the pressure regulating valve operates becomes large.

As a result, the pressure inside the pot increases abnormally, causing the lid to deform and the contents to spill out, which is very dangerous for the user.

Purpose of the invention The present invention solves these conventional problems, improves the operating performance of pressure regulators and pressure display devices, and
Our goal is to provide safe cooking utensils.

Structure of the invention The cooking utensil of the invention includes a cooking utensil main body, a pot housed in the main body, a lid body covering the top opening of the main body or the pot, and a pressure adjusting device or A pressure display device that indicates the pressure inside the pot, and a seal member of the pressure regulator or pressure display device is formed of an elastic body, and the seal member has a rough sealing surface, or a plurality of It has a ring-shaped unevenness, and some of the rings are formed higher than other rings, and this structure reduces the resistance force when pulling the pressure regulating valve away from the valve seat even when it is pressed against the valve seat. , no suction force is generated, and the operating performance of the pressure regulator or pressure display device is improved and safe.

DESCRIPTION OF EMBODIMENTS A cooking utensil according to an embodiment of the present invention will be described below based on the accompanying drawings.

1 and 2, 11 is a cooking utensil main body, 12 is a pot housed in the main body 11, 13 is a lid body that covers the top opening of the main body 11, 14 is a lid plate fixed to the lid body 13, 15 is attached to the lid 13 and the lid plate 14, and when the lid 13 is set on the main body, the pot 12
A pot gasket 16 is a pressure regulating device provided on the lid plate 14, and 17 is a pressure regulating device 16, and has a steam outlet that communicates the inside of the pot with outside air. A valve seat 18 made of an elastic body fixed to a hole drilled in the body 13 has different diameters at the top, middle, and bottom. A metal pressure regulating valve having a smaller diameter than the diameter of the outlet, is inserted into the valve seat 17, and seals the steam outlet; 19 is the upper surface of the valve seat 17, and is in pressure contact with the pressure regulating valve 18; 20 is an inner lid that covers the upper opening of the pot 12.

In the above configuration, to explain the operation, the pot 12
By heating the food inside the pot 12, steam is generated and the pressure inside the pot 12 increases. At this time, if the internal pressure exceeds the area set by the steam outlet of the valve seat 17 and the weight of the pressure regulating valve 18, the pressure regulating valve 18
rises and opens the steam outlet of the valve seat 17. Therefore, the steam within the pot 12 is discharged to the outside.
When the internal pressure drops to the set internal pressure, the pressure regulating valve 18 again seals the steam outlet of the valve seat 17.

At this time, the sealing surface of the valve seat 17 is textured, and even if the pressure regulating valve 18 is pressed against it for a long time due to its own weight, the contact area is a minute part of the textured tip and the contact area is small. is very small. In addition, the contacting portion is elastically deformed and constantly receives force to separate from the pressure regulating valve 18, so there is almost no resistance when the sealing surface is pulled apart.

On the other hand, since there is no space that acts as a suction plate like in conventional seals, no suction force is generated on the sealing surface. Therefore, the pressure regulating valve of this embodiment always operates at the set pressure.

Note that the size of this grain is very fine, and if there is a certain amount of area, the seal will be completed completely.

Effects of the Invention As is clear from the above embodiments, the pressure regulating device or pressure indicating device for cooking utensils of the present invention has a particularly rough sealing surface or a plurality of rings, some of which are made higher than others. According to
This eliminates the resistance and adsorption force when pulling apart the pressure regulating valve or pressure indicating valve, improving operational performance and safety. Further, since the valve itself is supported by the sealing surface, the seal can be prevented from changing over time (wearing out) due to long-term use, and can operate reliably even after long-term use.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view of a cooking utensil showing an embodiment of the present invention, Figs. FIG. 7 is a cross-sectional view of a pressure display device and a top view of a valve seat showing another embodiment. 11... Cooking utensil body, 12... Pot, 13...
Lid body, 17... Valve seat (sealing member), 18... Pressure regulating valve (pressure valve), 19, 24... Seal surface,
22...Pressure display valve (pressure valve).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cooking utensil body, a pot housed in the body, and a lid body that covers the top opening of the body or the pot;
A cooking utensil comprising a pressure valve provided on the lid and a sealing member made of an elastic body, the sealing member having a roughened sealing surface. (2) The cooking utensil according to claim 1, wherein the sealing surface of the sealing member is textured.