JPH0433075Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a lid for an electric pot.

(Prior Art) Conventionally, in electric pots, especially electric pots made of stainless steel vacuum double containers, an inner cover made of stainless steel is attached to the inner surface of a lid body that covers the opening of the container body. A steam passage is formed from the steam inlet of the inner lid to the steam port of the lid body. The inner lid is provided to prevent boiling water from coming into direct contact with the resin lid body due to the rise of the water surface during boiling.

(Problem to be solved by the invention) However, when boiling or keeping warm, hot water dew adheres to the wall of the steam passage, and when the lid is opened, this hot water dew flows on the inner surface of the inner lid and flows out from the steam inlet. , it turns into so-called dew and causes burns to people,
There were problems such as spillage to surrounding areas.

The present invention was devised in view of such problems, and an object of the present invention is to provide a lid for an electric pot that causes less dripping when opened.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an inner lid that covers the opening of the container body, and a steam inlet that flows from the steam inlet of the inner lid to the steam inlet of the lid body. In this lid for an electric pot, the steam passage wall is provided above the steam inlet of the inner lid and on the lower surface of the lid, with a downward convex portion.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a lid body 4 of an electric pot according to the present invention, which roughly shows a lid body 10, a bellows pump device 2, and a bellows pump device 2.
0, a steam pipe 30 and an inner lid 40. Although not specifically illustrated, the container body 1 is a vacuum double container made of stainless steel.

The lid body 10 includes a top plate 11 made of resin, and a top plate 1 made of resin.
1 from below and fixed with lower plate mounting screws 12, 12, and a bellows pump device 20 and a resin heat insulating partition plate 14, which will be described later, are installed inside. It is provided. One end of the lid body 10 is attached to the shoulder body 2 of the container body 1 with a hinge pin 15 so as to be freely rotatable in the vertical direction, and a hook 16 provided at the other end is attached to the shoulder body 2 of the container body 1. The opening 3 of the container body 1 is opened and closed by being engaged with and detached from the body 2.

The heat insulating partition plate 14 is attached to the lower plate 13 by engaging three elastic locking pieces 17 hanging down from the lower surface thereof. Further, at three locations near the outer periphery of the heat insulating partition plate 14, operation holes 18 are provided for inserting and tightening inner lid mounting screws 52, which will be described later. Note that the heat insulating partition plate 14 may have a double structure with an air layer, or a plurality of plates may be provided in the lid body 10.

The bellows pump device 20 has a first steam pipe 31 and a steam pipe mounting screw 33 on the lower plate 13.
The bellows 21 fixed by the bellows 2
Push button 22 and bellows 2 to push down 1
A guide shaft 23 is attached to the lower plate 13 from inside the guide shaft 23 so as to be slidable up and down through the lower plate 13 and has an air flow passage formed inside. It is comprised of a substantially cylindrical valve gasket 24 that is attached to and can be expanded and contracted up and down, and a lock button 25 that locks the push button 22 from being pressed down.

The steam pipe 30 includes a first steam pipe 31 and a second steam pipe 3.
It is composed of 2. The first steam pipe 31 has its upper end placed over the guide shaft 23 from below, is pressed into contact with the upper part of the valve packing 24, and is attached to the lower plate 13 with a steam pipe mounting screw 33. Steam communication holes 34 and 35 are formed in the lower end and side wall of the first steam pipe 31, respectively. The lower edge of the steam distribution hole 34 serves as a kind of valve seat for a ball 48, which will be described later, to come into contact with the electric kettle when it falls over, blocking the steam pipe 30 and preventing hot water from flowing out. As shown in FIG. 4, slits 38 are formed at two locations around the circumference. This slit 38 may be provided at at least one location.

On the other hand, the second steam pipe 32 has one end connected to the steam distribution hole 35 of the first steam pipe 31, and the other end penetrates the lower plate 13 and the heat insulating partition plate 14 and is connected to the steam port 19 of the upper plate 11. has been done. In the middle of this second steam pipe 32, there is a hole 36 for sensing a steam temperature sensor.
is provided, and a gasket 37 is attached.

The inner lid 40 includes a tray-shaped stainless steel inner lid lower plate 4.
1 and a stainless steel heat insulating plate 43 that comes into contact with a flange 42 (see Fig. 2) provided by bending the upper edge of the outer periphery of the inner lid lower plate 41 outward, resulting in a double structure with an internal space. It was formed in The bottom of the inner lid lower plate 41 is provided with recesses 44 at three locations near the outer periphery, and a steam inlet 45 is provided at the lowest part of these recesses 44.
is drilled. Further, steam circulation holes 46 are bored at three locations around the center of the heat insulating plate 43. Then, from the steam inlet 45 of the inner lid lower plate 41,
Internal space of inner lid 40, steam distribution hole 4 of heat insulating plate 43
6. A steam passage is formed which reaches the steam port 19 of the upper plate 11 via the steam distribution hole 34, the first steam pipe 31, the steam distribution hole 35, and the second steam pipe 32.

In the center of the heat insulating plate 43, a stainless steel ball 48 is placed in a concave portion 47 formed to protrude downward.
A ball 48 is placed on the inner lid lower plate 41 that forms the bottom of the recess 47 , and when the ball 48 falls, hot water flows in and pushes the ball 48 into the steam distribution hole 34 of the first steam pipe 31 . A ball hole 47a is provided for pushing the water in the direction of. Also,
As shown in FIG. 2, among the inner surfaces of the heat insulating board 43,
The portion of the inner lid lower plate 41 located above the steam inlet 45 is formed with a convex portion 49 bulging downward in a conical shape, and the apex of the convex portion 49 and the steam inlet 45
and are located on the same vertical line.

As shown in FIG. 1, on the outer periphery of the inner lid 40,
A sealing member 50 made of silicone rubber is attached, which includes a main body sealing portion having a substantially dogleg-shaped cross section and an inner lid sealing portion having a substantially square cross-section. The main body seal portion of the seal member 50 seals the opening 3 of the container main body 1 when the lid 4 is closed.

The inner cover 40 is secured to the flange of the inner cover 40 by fixing a resin fixing ring 51 fitted on the outside of the sealing member 50 to the lower plate 13 from inside the cover body 10 using inner cover mounting screws 52. The portion 42 is a flange portion provided on the inner periphery of the fixing ring 51, and is attached to the lower plate 13 through the inner lid seal portion of the seal member 50 with clamping pressure.

In addition, as shown in FIG.
0 is interposed, and a heat insulating material 61 made of foamed resin is housed in the space between the heat insulating plate 43 and the lower plate 13.

In the lid 4 of the electric pot having the above configuration, the hot water on the inner lid lower plate 41 is removed from the hot water and dew attached to the inside of the inner lid 40 forming a part of the steam passage from the steam inlet 45 to the steam port 19. The dew flows into the recess 44 and drips onto the hot water surface of the container body 1 from the steam inlet 45. On the other hand, the hot water dew on the cross-sectional plate 43 flows into the convex part 49 and drips from the apex of the convex part 49, dropping through the steam inlet 45. It passes through and falls onto the surface of the water. In addition, the hot water dew that adheres to the lower surface of the inner lid lower plate 41, that is, the part facing the hot water surface, drips naturally, but especially the hot water dew that adheres to the vicinity of the bulge on the back surface of the recess 44 is removed from the bulge. The steam flows along the surface toward the steam inlet 45 and drips onto the hot water surface together with the hot water and dew inside the inner lid 40. Therefore, when boiling,
During heat retention, the hot water and dew adhering to the inside and lower surface of the inner lid 40 are constantly dripping onto the hot water surface from the steam inlet 45 and returned to the container body, so even if the lid 4 is opened, the hot water is The amount of dripping will be reduced.

As described above, the steam inlet 45 is provided at three locations around the circumference of the inner lid lower plate 41. Even if one of the steam inlet 45 is blocked by the water surface jumping during boiling, the steam can be exhausted from the other two steam inlet 45, ensuring safety.

By the way, when the electric kettle falls over while boiling water, the ball 48 is pushed by the hot water flowing in from the ball hole 47a and falls into the first steam pipe 3, as shown in FIG.
Since the steam distribution hole 34 of 1 is blocked, hot water is prevented from leaking to the outside through the steam passage, and the valve of the hot water supply port (not shown) of the container body 1 acts to prevent leakage from the hot water supply port. . At this time, if the ball 48 completely blocks the steam distribution hole 34, the internal pressure may increase, causing the internal parts to break or the lid 4 to fly off. Furthermore, when the electric kettle is turned on, even if the hot water inlet valve opens first, if the ball 48 remains in close contact with the seat and blocks the steam distribution hole 34, hot water will be discharged from the hot water outlet due to an increase in internal pressure. Sometimes.

However, in this embodiment, as shown in FIG. 3, a slit 38 is formed in the steam distribution hole 34 that the ball 48 comes into contact with, and the steam pipe 30 communicates with the inside of the container body 1 through this slit 38. Even if the ball 48 sometimes blocks the steam distribution hole 34, the pressure is released through the slit 38, and damage to the lid 4 is prevented. Furthermore, when the electric kettle is rebuilt, the pressure is released through the slit 38, so the ball 48 falls by gravity into the recess 47 from the steam distribution hole 34, opening the steam passage, thereby eliminating natural discharge from the hot water supply port. .

Further, in this embodiment, the steam inlet 34 that serves as the valve seat of the ball 48 is circular and has a slit 3.
8, it is better to sit on compared to those with a non-circular seat surface or those with protrusions on the seat surface, and the cross-sectional area of the pressure relief flow path is always maintained constant.
It is easy to set the cross-sectional area.

In the above embodiment, the inner lid has a double structure, but the present invention can also be applied to a single-layer structure by, for example, providing a convex portion on the lower plate 13. can.

(Effects of the Invention) As is clear from the above explanation, the present invention has the effect that even if the lid is opened, there is little dripping of hot water and it is safe.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the lid of an electric pot according to the present invention, Fig. 2 is an enlarged sectional perspective view of the inner cover near the steam inlet, Fig. 3 is a sectional view of the vicinity of the steam distribution hole of the steam pipe, Figure 4 is an enlarged view of the steam distribution hole. 1... Container body, 3... Opening, 4... Lid,
40...Inner lid, 43...Insulating board (steam passage wall),
45... Steam inlet, 49... Convex portion.

Claims (1)

[Scope of Claim for Utility Model Registration] In a lid for an electric pot, the lid has an inner lid that covers the opening of the container body, and a steam passageway from the steam inlet of the inner lid to the steam port of the lid body: A lid for an electric pot, characterized in that a downward convex portion is provided on a steam passage wall surface provided above a steam inlet and on a lower surface of the lid.