JPS6213549Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a weight tilting side device in a pressure regulating valve of a pressure cooker, more specifically, a state in which the weight is lifted to release the internal pressure of the pot after boiling in a pressure cooker. This relates to a device that tilts and holds the device diagonally.

Conventional technology Conventionally, the lid of a pressure cooker has a cylindrical valve seat installed in an upright shape and a cavity opening downwardly on the inside. A pressure regulating valve for a pressure cooker is already known, which includes a weight having a body and a spring attached to the inner surface of the lower end of the weight. In conventional pressure regulating valves, a pair of upper and lower expanded diameter parts are provided at the upper part of the cylindrical valve seat through an annular groove for locking a spring. The weight is lifted upwards, and the spring at the lower end of the weight is fitted into the annular groove of the cylindrical valve seat and engaged with the lower bulge to hold the weight in the lifted state (for example, in actual use). (Refer to Publication No. 103568/1983). However,
In such conventional devices, the state before and after lifting the weight is the same when viewed from the outside, and the height at which the weight is lifted is extremely small, so if it is a little far away, the weight may It is very difficult to determine whether the weight is being lifted or not, and therefore, immediately after boiling in a pressure cooker, when lifting the weight to release the internal pressure of the pot, other workers may unknowingly drop the weight. If you approach the weight part carelessly, there is a risk of getting burned by the steam blowing out from inside the pot, or if you just lowered the pot from the stove after cooking in a pressure cooker, you may not be able to lift the weight. If the pot is forgotten and left unattended, this cannot be seen from the outside, and the internal pressure of the pot will not drop no matter how long it takes, causing problems with cooking.

Purpose of the invention The purpose of this invention is to solve the above problems, and to make it possible to tilt and hold the weight in a lifted state after cooking in a pressure cooker, thereby making it possible to see the lifted state of the weight from the outside. A pressure regulating valve for a pressure cooker that can be easily and reliably determined, is extremely safe, and can quickly and reliably release the internal pressure of the pot, improving cooking efficiency. We are trying to provide a weight tilting device.

Structure of the invention In order to achieve the above object, this invention has a cylindrical valve seat that is attached to the lid of a pressure cooker in an upright manner, and a cylindrical valve seat that has a hollow part that opens downward on the inside. It is equipped with a weight that is fitted over the cylindrical valve seat and has a valve body at the top of the cavity, and a spring attached to the inner surface of the lower end of the weight. In a pressure regulating valve for a pressure cooker, which is provided with a pair of upper and lower expanded diameter portions and a tapered portion at the upper end of a cylindrical valve seat, a cavity provided inside the weight is used to hold the weight. The spring at the lower end of the weight is sized so that the weight can be tilted toward the cylindrical valve seat when raised to a height that fits into the annular groove, and the spring is provided at the lower end of the inner wall of the weight. three outer circumferential circular arc parts fitted in the annular grooves, and a circle arranged opposite to each outer circumferential circular arc part and connecting the protruding ends, the diameter of which is larger than the outer diameter of the lower part of the cylindrical valve seat, and the same expanded diameter part. It is composed of three inward convex circular arc parts that are smaller than the spring, and a gap for relief of the expanded diameter part is provided inside each outer peripheral circular arc part of the spring, so that when the weight is in the above-mentioned lifted state, When the spring is tilted, one of the inwardly convex arcuate portions of the spring fits into the annular groove and engages with the lower edge of the upper enlarged diameter portion of the cylindrical valve seat, and the inner wall of the weight engages with the tapered portion. A pressure regulating valve for a pressure cooker, which is brought into abutment and a part of the lower expanded diameter part is fitted into the expanded diameter part relief gap inside the outer peripheral circular arc part facing the inwardly convex circular arc part. The gist of this paper is the weight tilting device.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In FIG. 1, the lid 1 of the pressure cooker has an oval shape, and a threaded rod 2 is provided upright in the center of the lid 1. The threaded rod 2 is inserted into a hole drilled in the center of the lid attachment strip 3. The strip 3 is movable up and down on the lid 1, and has a pot body abutting part 3a that comes into contact with the upper surface of the top wall of the pot body (not shown) and a hanging part 3b located outside the pot body at both ends thereof. There is. A plate spring 4 having a gentle, roughly V-shape when viewed from the side is interposed between the lid 1 and the strip 3, so that the strip 3 is always biased in a direction away from the lid 1. . A knob 5 having a female thread is screwed into the upper end of the threaded rod 2. A gasket 6 is attached to the top surface of the periphery of the lid 1. A safety valve 7, an auxiliary safety valve 8 that is activated when the safety valve 7 fails to operate in an emergency, and a pressure control valve 9 are attached to the top surface of the lid 1.

As shown in FIGS. 2 to 6, the pressure regulating valve 9 has a cylindrical valve seat 10 that is attached to the lid 1 of the pressure cooker in an upright manner, and a cavity 25 that opens downwardly on the inside. A weight 12 is fitted over the cylindrical valve seat 10 and has a valve body 11 at the top of the cavity 25, and a spring 14 is attached to the inner surface of the lower end of the weight 12.

At the center of the cylindrical valve seat 10 is a vertical hole 10A for steam release that communicates with the inside of the pot body. Further, a pair of upper and lower enlarged diameter portions 16 and 17 are provided at the upper part of the cylindrical valve seat 10 via an annular groove 15 for locking a spring, and a weight 1 is provided in which the upper end of the cylindrical valve seat 10 is in an inclined state.
A tapered portion 10B is formed along the inner wall 12B of the second portion. A flange portion 19 and a male threaded portion 20 are provided at the lower end of the cylindrical valve seat 10, and the male threaded portion 20 is connected to the lid 1.
It is screwed into a screw hole 21 drilled in the.
The upper and lower portions of the lower swollen diameter portion 17 are made into smooth tapered surfaces, and the lower edge of the upper swollen diameter portion 18 is formed by the spring 14.
It is perpendicular to the outer surface of the cylindrical valve seat 10 so that it does not easily escape.

The weight 12 is made of a cylindrical body having a top wall 12A, and the cavity 25 provided inside the weight 12 is
The spring 14 at the lower end of the weight 12 is connected to the cylindrical single seat 1
The weight 12 is sized so that it can be tilted with respect to the cylindrical valve seat 10 while being lifted to a height where it fits into the annular groove 15 of 0.0. Top wall 12 of weight 12
A valve body 11 having an inverted conical lower end is screwed into a screw hole 22 drilled in the center of A.
The lower weight inner wall 12B is provided with an annular groove 23 into which the spring 14 is fitted. A knob 13 is screwed onto the upper end of the weight 12.

The spring 14 has three outer circular arc parts 14A fitted in an annular groove 23 provided at the lower end of the inner wall 12B of the weight, and a diameter of a circle that is arranged opposite to each outer peripheral arc part 14A and connects the protruding end. The outer diameter of the lower part 18 of the cylindrical valve seat 10 is larger than the outer diameter of the lower part 18 of the cylindrical valve seat 10. 14A is provided with a bulging part relief gap 24 having a size in which a part of the lower bulging part 17 of the cylindrical valve seat 10 fits when the weight 12 is tilted in the lifted state. . Three outer circumferential arc parts 14
The diameter of the circle connecting A is the annular groove 2 at the lower end of the weight 12.
It is made to be slightly smaller than or equal to the diameter of the groove bottom of No. 3. The diameter of the wire rod itself of the spring 14 is made smaller than the width of the annular groove 23.

FIG. 2 shows a state in which the upper end of the vertical steam release hole 10A of the valve seat 10 is closed by the valve body 11 of the weight 12, and the pressure regulating valve 9 is closed.

When the steam pressure inside the pot body rises during cooking using the pressure cooker, the weight 12 is pushed up by the steam pressure, as shown in FIG. At this time, the inward convex arcuate portion 14B of the spring 14 hits the lower enlarged diameter portion 17 of the valve seat 10, so the weight 12 does not come off. The steam inside the pot body rises inside the steam release vertical hole 10A of the cylindrical valve seat 10 and reaches the top wall 12A of the weight 12.
There, the direction is changed downward to reduce the pressure, and the weight is further lowered within the cavity 25 of the weight 12.
The air blows out from the lower end opening of the weight 12 toward the lid 1, collides with the lid 1, and then scatters outward. When a portion of the steam escapes in this manner and the steam pressure within the pot body falls below a predetermined value, the weight 12 is lowered. Thereafter, this action is repeated to adjust the internal pressure of the pressure cooker.

When the cooking in the pressure cooker is completed, as shown in Fig.
After lifting it to a height where the inward convex arc portion 14B of No. 4 fits into the annular groove 15 of the cylindrical valve seat 10,
Tilt the weight 12 to one side to make it oblique. As a result, one of the inward circular arc parts 14B of the spring 14 engages with the lower edge of the upper enlarged diameter part 16 within the annular groove 15, and the remaining two engage with the upper tapered surface of the lower enlarged diameter part 17. A part of the lower expanded diameter portion 17 is fitted into the expanded diameter portion relief gap 24, and the inner wall 12B of the weight 12 is brought into contact along the tapered portion 10B at the upper end of the cylindrical valve seat 10, and the heavy Weight 1
2 can be held in the tilted state in a raised manner. Therefore, it is possible to easily and reliably determine from the outside whether the weight 12 is in the lifted state, and for this reason, other workers can easily and reliably determine whether or not the weight 12 is in the lifted state.
There is no need to worry about inadvertently approaching step 2, which is extremely safe, and there is no need to worry about forgetting to lift the weight 12 to release the internal pressure of the pot after boiling.

In addition, when removing the weight 12 from the valve seat 10, it is sufficient to hold the weight 12 by hand and forcefully pull it upward. On the other hand, when fitting the weight 12 onto the valve seat 10, it is sufficient to simply push down the weight 12 by hand.

Effects of the invention As described above, this invention has the cylindrical valve seat 10 that is attached to the lid of the pressure cooker in an upright manner, and the cylindrical valve seat 10 that has the cavity 25 that opens downward on the inside. It is equipped with a weight 12 that is fitted over and has a valve body 11 at the top of the cavity 25, and a spring 14 attached to the inner surface of the lower end of the weight 12, and the spring is locked to the upper part of the cylindrical valve seat 10. A pair of upper and lower enlarged diameter portions 16 and 17 are provided through the annular groove 15, and a tapered portion 10 is provided at the upper end of the cylindrical valve seat 10.
In the pressure regulating valve 9 of the pressure cooker in which B is provided, the cavity 25 provided inside the weight 12 is
The spring 14 at the lower end of the weight 12 is connected to the annular groove 1.
The weight 1 is lifted to a height that fits into the weight 5.
The spring 14 has three outer circumferential arc parts 14A fitted in annular grooves 23 provided at the lower end of the weight inner wall 12B, and each outer circumferential arc part 14A. Three inwardly convex circular arc parts 14B which are arranged opposite to the part 14A and whose diameter of the circle connecting the protruding ends is larger than the outer diameter of the lower part 18 of the cylindrical valve seat 10 and smaller than the expanded diameter part 17.
In addition, a gap 24 for releasing the expanded diameter portion is provided inside each outer circumferential arc portion 14A of the spring 14, and when the weight 12 is tilted in the above-mentioned lifted state, the spring 14 is One of the inward convex circular arc parts 14B fits into the annular groove 15 and engages with the lower edge of the upper enlarged diameter part 16 of the cylindrical valve seat 10, and the inner wall 12B of the weight 12 comes into contact with the tapered part 10B. This is because a part of the lower bulging portion 17 is fitted into the bulging portion relief gap 24 inside the outer circumferential arc portion 14A facing the inward convex arc portion 14B. After cooking in a pressure cooker, the lifted weight 12 can be tilted and held diagonally, so that the lifted state of the weight 12 can be easily and reliably determined from the outside. Immediately after boiling in a pressure cooker, while lifting the weight 12 to release the internal pressure of the pot, another worker unknowingly lifted the weight 12.
There is no risk of getting burned by the steam blowing out from the inside of the pot if you inadvertently approach the two parts.
Extremely safe. In addition, since it is possible to easily determine from the outside whether the weight 12 is in the lifted state, it is possible to forget to lift the weight 12 even if you just put the pot down from the stove after cooking in the pressure cooker. The internal pressure of the pressure cooker can be quickly and reliably released after cooking without worrying that it will spoil if left unattended, and the workability of cooking can be improved.

[Brief explanation of drawings]

The drawings show an embodiment of this invention: Fig. 1 is a perspective view of the lid of the pressure cooker, Fig. 2 is a central vertical sectional view of the pressure regulating valve, Fig. 3 is a plan view thereof, and Fig. 4 is a perspective view of the lid of the pressure cooker. 2
5 is a sectional view corresponding to FIG. 4 showing the valve in a fully open state, and FIG. 6 is a sectional view corresponding to FIG. 4 showing a state in which the weight is tilted. 9...Pressure control valve, 10...Cylindrical valve seat, 10B
... Taper part, 11 ... Valve body, 12 ... Weight,
12A...Top wall, 12B...Inner wall, 14...Spring, 14A...Outer circular arc portion, 14B...Inward convex arc portion, 15......Annular groove for locking spring, 16,
17... Expanded diameter part, 18... Valve seat lower part, 23... Annular groove, 24... Expanded diameter part relief gap, 25... Cavity part.

Claims (1)

[Scope of utility model registration request] A cylindrical valve seat 10 is attached to the lid 1 of the pressure cooker in an upright manner, and a cavity 25 is opened downward to the inside.
a weight 12 which is fitted over the cylindrical valve seat 10 and has a valve body 11 at the top of the cavity 25;
Spring 14 attached to the inner surface of the lower end of the weight 12
A pair of upper and lower enlarged diameter portions 16 are provided at the upper part of the cylindrical valve seat 10 via an annular groove 15 for locking the spring.
17 and a tapered part 10B at the upper end of the cylindrical valve seat 10. In the pressure regulating valve 9 of the pressure cooker, the hollow part 25 provided inside the weight 12 allows the weight 12 to The spring 14 at the lower end of this is made large enough to tilt the weight 12 with respect to the cylindrical valve seat 10 when raised to a height where it fits into the annular groove 15. The diameter of the three outer circumferential arc parts 14A fitted in the annular groove 23 provided at the lower end of the valve seat 12B and the circle disposed opposite to each outer circumferential arc part 14A and connecting the protruding ends is the lower part of the cylindrical valve seat 10. The outer diameter of the spring 14 is larger than the outer diameter of the spring 18 and smaller than the swollen diameter portion 17. When the weight 12 is tilted in the lifted state, the spring 1
One of the four inwardly convex circular arc portions 14B is an annular groove 15.
and is engaged with the lower edge of the upper enlarged diameter portion 16 of the cylindrical valve seat 10, and the inner wall 12B of the weight 12 is brought into contact with the tapered portion 10B,
A part of the lower expanded diameter portion 17 is the inward convex arc portion 14
It is adapted to fit into the bulging part relief gap 24 inside the outer circumferential arc part 14A facing B.
Weight tilting side device in pressure control valve of pressure cooker.