JP2003310439A - Electric pot - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric pot of which a lid member made of a resin is less influenced by hot steam for preventing changes with time such as change in color by improving structure of a lid body. <P>SOLUTION: The electric pot comprises a pot body provided with an inner vessel 13 and a heater, and the lid body 12 which is attached to the top of the pot body to open/shut the upper opening of the inner vessel 13, and the lid body 12 has the resin lid member 15 which has an upper plate 23 and a bottom plate 21 and an in-plug lid 16 made of a sheet metal which is fixed in the rear face of the lid member 15 and has a first steam vent 19. The space forming a steam passage between the lid member 15 and the lid 16 is divided to a lower first space 26 and an upper second space 27 by sheet-metal-made bulkhead member 25 which has a second steam vent 28. The steam generated in the inner vessel 13 passes through the first steam vent 19, the second steam vent 28, a third steam vent 22 formed in the bottom plate 21 and a forth steam vent 24 formed in the upper plate 23 in order and is exhausted out. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pot provided with a pot body having an inner container and a heater, and a lid attached to the upper part of the pot body so as to open and close the upper opening of the inner container. More specifically, the present invention relates to the structure of a lid having a steam passage for discharging steam generated in the inner container to the outside.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view showing the structure of a conventional electric pot. This electric pot is mainly provided with a pot body 101 which is covered with a resin molded product and a lid body 102 which is attached to the upper part thereof. The pot body 101 includes an inner container 103 for accommodating a liquid (usually water or hot water) and its And a heater 104 attached to the bottom. The lid 102 includes a lid member 105 made of a resin molded product and a sheet metal stopper inner lid 106 fixed to the lower side thereof.

As shown in FIG. 7, the inner lid 106 is a disk-shaped metal plate product and is fixed to the lower side of the lid member 105 by three screws 108. As shown in FIG. 6, a rubber packing 107 is attached to the outer periphery of the inner lid 106 of the stopper. With the lid 102 closed, the rubber packing 107 adheres to the upper edge of the inner container 103 to seal the upper opening of the inner container 103. Further, as shown in FIG. 7, a plurality of steam holes (first steam holes) 109 are formed in a substantially central portion of the lid member 105, and reinforcing ribs 110 are provided at a plurality of positions near the periphery.

In FIG. 6, the vapor generated from the liquid (hot water) contained in the inner container 103 is, as shown by the arrow line,
The first steam hole 109 of the inner lid 106, the second steam hole 112 formed in the lower plate 111 of the lid member 105, and the third steam hole 114 formed in the upper plate 113 of the lid member 105 through the outside Exhausted to. The space 115 formed between the inner lid 106 of the stopper and the lower plate 111 of the lid member 105 constitutes a vapor passage, and when the electric pot falls, the liquid contained in the inner container 103 flows out through the vapor passage. A water shutoff valve is provided to prevent this.

The water shutoff valve has a structure in which a valve member 116 made of a metal and a second steam hole 112 formed in a lower plate 111 of a lid member 105 are vertically movably held (a cylindrical member). ) 117. As shown in FIG. 6, when the electric pot is upright, the valve member 116 is at the lower end position due to its own weight, but when the electric pot falls, the valve member 116 moves toward the second steam hole 112 (upward in FIG. 6). To move to block the second steam hole 112. In this way, the water shutoff valve (valve member 116) prevents the liquid contained in the inner container 103 from flowing out.

[0006]

In the conventional electric pot having the above structure, the lid 102 has been used for many years.
The lid member 105 (the upper plate 113 and the lower plate 111) made of resin, which constitutes the above, may change with time such as discoloration. Such a change with time is not desirable in appearance and becomes a factor to shorten the life of the electric pot. Such a lid member 10
It is considered that the change with time such as discoloration of No. 5 mainly occurs in the process in which the high-temperature steam is exhausted to the outside through the steam passage.

Therefore, the present invention provides an electric pot in which the lid member made of resin is less affected by high-temperature steam by devising the structure of the lid body and the change with time such as discoloration is less likely to proceed. With the goal.

[0008]

An electric pot according to the present invention comprises a pot body having an inner container and a heater, and a lid body attached to the upper part of the pot body so as to open and close the upper opening of the inner container. An electric pot configured such that steam generated in the inner container is discharged to the outside through a steam passage formed in the lid, the lid being fixed to a resin lid member and a lower side thereof. A metal plate inner lid having a first vapor hole formed therein, a space forming a vapor passage is provided between the lid member and the inner lid, and a partition wall member made of a metal sheet having a second vapor hole. Is characterized in that the space is divided into a lower first space and an upper second space.

According to this structure, the vapor generated from the liquid (hot water) contained in the inner container passes through the first vapor hole formed in the inner lid of the stopper and the inner lid of the stopper (made of sheet metal) and the partition wall. It enters the first space surrounded by the member (sheet metal), then passes through the second vapor hole of the partition member, enters the second space surrounded by the lid member (made of resin) and the partition member, and is exhausted to the outside. It That is, in the structure of the present invention, the resin lid member is not directly exposed to the high temperature steam. This is because steam that has been cooled to some extent in the first space surrounded by the inner lid of the sheet metal and the partition member enters the second space and hits the resin lid member. As a result, the change over time such as discoloration due to the high temperature steam of the resin lid member is suppressed as compared with the conventional structure.

In a preferred embodiment, a water shutoff valve is provided to prevent the liquid in the inner container from flowing out through the vapor passage when the electric pot falls, and the water shutoff valve is movable up and down in the first space. It includes a valve member arranged and a second vapor hole of a partition member opened and closed by the valve member. According to such a structure, when the electric pot falls, the high-temperature hot water stays in the first space surrounded by the inner lid of the sheet metal and the partition member, and rarely goes out to the second space. So
No change occurs in the fat lid member due to hot water.

In another preferred embodiment, the first space and the second space are located rearward of the center of the lid member in plan view, and the second vapor hole of the partition member is larger than the first vapor hole of the inner lid of the stopper. Located on the rear side. The structure in which the first space and the second space are located rearward of the center of the lid member in a plan view is a general structure for exhausting steam from the rear part of the lid upper surface. For example, the first steam hole of the inner lid can be provided in the center of the lid body as much as possible in the plan view, and the second steam hole can be provided as rearward as possible. In this way, by separating the first steam hole and the second steam hole from each other in a plan view, it is possible to increase the time (distance) through which the exhausted steam passes through the first space as much as possible and to enhance the cooling effect therebetween. it can.

In still another preferred embodiment, the lid member has a lower plate having a third steam hole and an upper plate having a fourth steam hole, and a third space is provided between the lower plate and the upper plate. Is provided,
The first, second and third spaces form a steam passage.
According to such a structure, the vapor generated in the inner container passes through the first, second, and third spaces in order to be cooled, so that the temperature when exhausted to the outside can be further reduced. You can

More preferably, the second space is formed to be wider than the first space and the third space, and the third vapor hole of the lower plate is formed in the substantially central portion of the second space, so that the electric pot is formed. The liquid that has leaked from the water shutoff valve when it falls is collected in the second space. According to such a structure, even if the liquid that has passed through the first vapor hole does not remain in the first space but passes through the second vapor hole when the electric pot falls, the second space is Since it functions as a liquid reservoir, it is prevented from leaking to the third space through the third steam hole (and further to the outside through the fourth steam hole).

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of an electric pot according to a first embodiment of the present invention. This electric pot 1 is mainly provided with a pot main body 11 which is covered with a resin molded product and a lid 12 which is attached to the upper part thereof, and the pot main body 11 has an inner container 13 in which a liquid (usually water or hot water) is stored. And a heater 14 attached to the bottom thereof. Lid 12
Has a resin-molded lid member 15 and a sheet metal stopper inner lid 16 fixed to the lower side thereof.

FIG. 2 is a plan view of the stopper inner lid 16. The inner lid 16 of the stopper is a disk-shaped processed metal plate, and is fixed to the lower side of the lid member 15 by three screws 18. In addition, FIG.
FIG. 7 is an enlarged cross-sectional view of a lid member 15 and a stopper inner lid 16. As shown in FIG. 3, a rubber packing 17 is provided on the outer peripheral portion of the inner lid 16.
Is installed. With the lid 12 closed, the rubber packing 17 adheres to the upper edge of the inner container 13 to seal the upper opening of the inner container 13. Further, as shown in FIG. 2, the lid member 1
A plurality of steam holes (first steam holes) 19 are formed in the substantially central portion of 5, and reinforcing ribs 20 are provided at a plurality of locations near the periphery.

As shown in FIGS. 1 and 3, a space between the lower plate 21 of the lid member 15 and the inner lid 16 of the lid is formed by a partition wall member 25 made of sheet metal, and the first lower space 26 and the second upper space 26. Space 27
It is divided into and. The second vapor hole 28 is formed in the partition member 25.
And a third vapor hole 22 is formed in the lower plate 21. Further, the upper plate 23 of the lid member 15 has a fourth steam hole 24.
Is formed, and the third plate is formed between the lower plate 21 and the upper plate 23.
The third space 2 is provided in an area including the steam holes 22 and the fourth steam holes 24.
9 is formed.

As shown by the arrow lines in FIGS. 1 and 3, the vapor generated from the liquid (hot water) contained in the inner container 13 is the first vapor hole 19 formed in the inner lid 16 of the stopper, and the partition member 25. The second steam hole 28 formed in the upper plate 2, the third steam hole 22 formed in the lower plate 21 of the cover member 15, and the upper plate 2 of the cover member 15.
The gas is exhausted to the outside through the fourth steam holes 24 formed in No. 3 in order. Therefore, the first space 26 formed between the stopper inner lid 16 and the partition member 25, the partition member 25 and the lid member 1
The second space 27 formed between the lower plate 21 and the lower plate 21 and the third space 29 formed between the lower plate 21 and the upper plate 23 constitute a vapor passage.

Further, a water shutoff valve is provided to prevent the liquid contained in the inner container 13 from flowing out through the vapor passage when the electric pot falls. The water shutoff valve includes a metal valve member 31 and a second steam hole 2 opened and closed by the valve member 31.
8 and. As shown in FIG. 1 (and FIG. 3), a recess 32 that receives the tapered lower surface of the valve member 31 is formed in the inner plug lid 16 at a lower portion of the second steam hole 28. As a result, the valve member 31 is arranged in the first space 26 so as to be vertically movable.

When the electric pot is upright, the valve member 3
1 is at the bottom (lower end position) of the recess 32 due to its own weight, but when the electric pot falls, the valve member 31 moves toward the second steam hole 28 (upward in FIG. 1) and closes the second steam hole 28. . Thus, the outflow of the liquid contained in the inner container 13 is prevented by the water shutoff valve (valve member 31).

As shown in FIGS. 1 and 3, the stopper inner lid 1
The first steam holes 19 formed in 6 and the second steam holes 28 formed in the partition member 25 do not overlap in a plan view. The second steam hole 28 is located rearward of the first steam hole 19. That is, the time required for the steam that has entered the first space 26 from the first steam hole 19 to exit from the second steam hole 28 to the second space 27 (first
The distance through the space 26) is made as long as possible so that the temperature of the steam drops as much as possible during that time. This prevents the resin lid member 15 (the lower plate 21 and the upper plate 23) from being directly exposed to high-temperature steam, and suppresses changes with time such as discoloration.

The third steam hole 22 is also arranged so as not to overlap the second steam hole 28 and the fourth steam hole 24 in a plan view. As can be seen from FIGS. 1 and 3, a steam exhaust path (steam path) that sequentially passes through the first steam hole 19, the second steam hole 28, the third steam hole 22, and the fourth steam hole 24.
Are formed to meander back and forth.

Further, the second space 27 is formed wider than the first space 26 and the third space 29, and the third steam hole 22 is formed in the substantially central portion of the second space 27. As a result, the liquid leaking from the water shutoff valve (second steam hole 28) when the electric pot falls, is collected in the second space 27. That is, even if the liquid that has passed through the first vapor hole 19 does not remain in the first space 26 but passes through the second vapor hole 28 when the electric pot falls, the second space 27 does not contain the liquid. Since it functions as a storage part, it does not leak through the third steam hole 22 to the third space 29, and further does not leak through the fourth steam hole 24 to the outside.

Further, as can be seen from FIG. 3, the peripheral edge of the second steam hole 28 is drawn upward to form a cylindrical shape. As a result, the steam exiting the second steam hole 28 is guided as straight upward as possible, that is, in a direction displaced from the third steam hole 22. Further, since the burr is prevented from protruding to the lower surface side of the partition wall member 25 at the peripheral edge portion of the second steam hole 28, the valve member 31 contacts the lower surface of the partition wall member 25 and closes the second steam hole 28. The sealing performance is improved.

FIG. 4 is a partially enlarged sectional view of the lid member 15 and the inner lid 16 of the electric pot according to the second embodiment of the present invention. Also in this embodiment, as in the first embodiment,
A space between the lower plate 21 of the lid member 15 and the inner lid 16 of the lid is partitioned by a partition member 25 made of sheet metal into a lower first space 26 and an upper second space 27. Further, the first steam hole 19 formed in the stopper inner lid 16 and the second steam hole 28 formed in the partition wall member 25 do not overlap with each other in plan view, and the second steam hole 28 is located behind the first steam hole 19. Located on the side. This prevents the resin lid member 15 (the lower plate 21 and the upper plate 23) from being directly exposed to high-temperature steam, and suppresses changes with time such as discoloration.

Lid 1 in the second embodiment shown in FIG.
In the structure of 2, the valve member 31 that constitutes the water shutoff valve has the first space 2
Instead of 6, the recess 32, which is vertically movable in the second space 27 and receives the tapered lower surface of the valve member 31, has a stopper inner lid 1.
6 is different from the structure of the first embodiment shown in FIGS. 1 and 3 in that it is formed on the partition member 25 instead of 6. In this connection, the steam hole for opening and closing the valve member 31 is not the second steam hole 28 formed in the partition member 25 but the third steam hole 22 formed in the lower plate 21 of the lid member 15.

Further, the fact that the first steam holes 19 formed in the inner lid 16 of the plug are large is also a point different from the structure of the first embodiment. Since the high-temperature steam generated from the liquid stored in the inner container 13 does not directly hit the resin lid member 15 (lower plate 21), the first steam hole 19 can be formed large in this way. is there. As a result, it is possible to obtain the effect that the phenomenon in which the first steam holes 19 are blocked by the bubbles during boiling is less likely to occur.

The partition member 25 of FIG. 4 has a larger vertical change in cross-sectional shape than the partition member 25 of FIG. 3, and is exhausted in combination with the cross-sectional shape of the lower plate 21 of the lid member 15. As shown by the arrow in FIG. 4, the moving path of the steam is bent not only left and right but also up and down. Furthermore, the lid member 1 of FIG.
The third steam hole 22 formed in the lower plate 21 of the fifth embodiment is formed three-dimensionally, which is different from the structure of FIG. 3, and the steam passing through the third steam hole 22 is directed not in the upward direction but in the lateral direction.

FIG. 5 is a partially enlarged sectional view of the lid member 15 and the inner lid 16 of the electric pot according to the third embodiment of the present invention. This embodiment has a structure in which the periphery of the third steam hole 22 of the lower plate 21 of the lid member 15 is replaced with a steam hole member 34 made of sheet metal in the structure of the second embodiment.
A rubber packing 35 is put on the opening of the steam hole member 34 that is opened and closed by the valve member 31, that is, the lower end opening of the steam hole member 34 that contacts the upper surface of the valve member 31.

According to such a structure, the third steam hole 22 is formed in a sheet metal member as well as the first steam hole 19 and the second steam hole 28 through which the exhausted steam passes.
The change with time such as discoloration of the resin member due to steam is further reduced. In FIG. 5, only the peripheral portion of the third steam hole 22 is replaced with the steam hole member 34 made of sheet metal, but the lower plate 21 (lid member 15) made of resin is replaced with the sheet metal member over a wider range. May be.

Although the embodiment of the present invention has been described above together with the modified examples, the present invention is not limited to the above-described embodiments and modified examples, and can be implemented in various forms. Lid member 15,
The specific shapes and attachment methods of the inner lid 16 of the stopper, the partition member 25, etc. are not limited to those illustrated in the drawings, and can be changed as appropriate.

In the above embodiment, the valve body constituting the water shutoff valve has a tapered lower surface (having an inverted trapezoidal sectional shape), and the recess having the tapered surface corresponding to the tapered lower surface is a stopper. Although formed on the inner lid or the partition member, the present invention is not limited to such a structure of the water shutoff valve. For example, the water shutoff valve may be configured by a spherical valve body and a structure that holds the valve body so that it can move up and down (for example, a cylindrical wall provided on a lid member or the like).

[0033]

As described above, in the structure of the electric pot of the present invention, the resin lid member that constitutes the lid is protected against the high temperature steam generated from the liquid (hot water) contained in the inner container. The vapor, which is not directly exposed and is cooled to some extent in the first space surrounded by the sheet metal member, hits the lid member made of resin. As a result, compared with the structure of the conventional electric pot, changes over time such as discoloration due to the high temperature steam of the resin lid member are suppressed.

In a preferred configuration, the second space is
Since it functions as a reservoir for liquid that has leaked from the water shutoff valve when the electric pot falls, the liquid that has passed through the first vapor hole when the electric pot falls does not remain in the first space but passes through the second vapor hole. In any case, it is possible to prevent leakage through the third steam hole to the third space (and further through the fourth steam hole to the outside).

Further, since the high-temperature steam does not directly hit the lid member made of resin, the first steam hole formed in the lid of the stopper can be formed larger than the conventional one. As a result, it is possible to obtain an effect that the phenomenon in which the first vapor holes are blocked by the bubbles during boiling is less likely to occur.

[Brief description of drawings]

FIG. 1 is a sectional view of an electric pot according to a first embodiment of the present invention.

FIG. 2 is a plan view of a stopper inner lid.

FIG. 3 is an enlarged cross-sectional view of a lid member and an inner lid of a plug.

FIG. 4 is a partially enlarged cross-sectional view of a lid member and an inner lid of an electric pot according to a second embodiment of the present invention.

FIG. 5 is a partial enlarged cross-sectional view of a lid member and an inner lid of an electric pot according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing the structure of a conventional electric pot.

7 is a plan view of a stopper inner lid used in the electric pot of FIG. 6. FIG.

[Explanation of symbols]

11 pot body 12 Lid 13 Inner container 14 heater 15 Lid member 16 Inner lid 19 First steam hole 21 Lower plate 22 Third steam hole 23 Upper plate 24 Fourth Steam Hole 25 Partition member 26 First Space 27 Second Space 28 Second steam hole 29 Third Space 31 valve member

Claims (5)

[Claims] 1. A pot body having an inner container and a heater,
A lid attached to an upper portion of the pot body so as to open and close an upper opening of the inner container, and steam generated in the inner container is exhausted to the outside through a steam passage formed in the lid. The lid has a lid member made of resin and an inner lid made of sheet metal having a first steam hole fixed to the lower side thereof, A space forming the steam passage is provided between the member and the inner lid of the plug, and the space is made into a lower first space and an upper second space by a partition wall member made of sheet metal having a second steam hole. An electric pot characterized by being partitioned. 2. A water shutoff valve is provided for preventing liquid in the inner container from flowing out through the steam passage when the electric pot falls, and the water shutoff valve is vertically movable in the first space. The electric pot according to claim 1, further comprising: a valve member that is opened; and a second steam hole of the partition member that is opened and closed by the valve member. 3. The first space and the second space are located rearward of the center of the lid member in a plan view, and the second steam holes of the partition member are rearward of the first steam hole of the stopper inner lid. The electric pot according to claim 1 or 2, wherein the electric pot is located at. 4. The lid member includes a lower plate having a third steam hole and an upper plate having a fourth steam hole, and a third space is provided between the lower plate and the upper plate. The electric pot according to claim 1, 2 or 3, wherein the first, second and third spaces form the steam passage. 5. The second space is the first space and the third space.
Since the third steam hole of the lower plate is formed to be wider than the space and the third steam hole of the lower plate is formed in the substantially central portion of the second space, the liquid leaked from the water shutoff valve when the electric pot falls is the second.
The electric pot according to claim 4, wherein the electric pot is configured to be stored in a space.