JPH0448765Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electric pot that uses air pressure to discharge liquid in an inner container using air pressure.

<Prior art> Conventionally, an electric pot using air pressure has a shoulder member connected to the upper end of an outer case surrounding an inner container, and an annular receiving part with an opening communicating with the mouth of the inner container in the center of the shoulder member. , a bottom member 5 is connected to the lower end of the outer case, a heater for heating the liquid in the inner container is wound around the lower part of the inner container, a liquid discharge mechanism is provided for discharging the liquid in the inner container to the outside, and a bellows pump is built in. A lid body consisting of a lower lid and an upper lid is provided, the lid body is attached to the receiving part of the shoulder member so that it can be opened and closed freely, and water is pumped into the inner container from a bellows pump in order to reduce the pressure inside the inner container that occurs when boiling water. In addition to the air exhaust port, there is a steam path on the lid side that discharges the steam to the outside.
Normally, the inside of the lid must be formed in a meandering path while bypassing attached mechanisms such as bellows pumps, resulting in a very complex structure and a large number of parts.
Assembly was difficult. Furthermore, the dead space between the lower lid and the cover plate was so large that it could not be used effectively.

<Purpose of the invention> The present invention was made in view of the above points, and has a simple structure, a small number of parts, and is easy to process, as well as making the dead space between the lower cover and the cover plate extremely effective. We provide pneumatic electric pots that can be used.

<Structure of the invention> According to the invention, the steam passage of the passage member is directly connected to the space between the bowl-shaped part of the lower lid and the cover plate to form a steam passage, and the steam passage is connected to the rear wall of the bowl-shaped part of the lower lid. A steam port that communicates with the steam flow path and a drain port that faces downward with respect to the lid body and communicates with the receiving portion of the shoulder member when the lid is opened are provided adjacent to each other, while the outside air port of the upper lid and the steam port of the lower lid are provided close to each other. The objective is to be achieved simply by providing a communicating joint pipe.

<Example of the invention> Hereinafter, an example of the invention will be described based on the drawings. The electric pot 1 has a wide mouth inner container 2 and an inner container 2.
an exterior case 3 surrounding the exterior case 3, a shoulder member 4 attached to the upper end of the exterior case 3, a bottom member 5 attached to the lower end of the exterior case 3, a lid body 6 detachably attached to the upper end of the shoulder member 4; It is composed of a liquid discharge mechanism 7 that discharges the liquid in the container 2, a heater 8 that heats the liquid in the inner container 2, and a thermistor 9 that detects the temperature in the inner container 2 and turns the heater 8 on and off. ing.

The inner container 2 is formed into a bottomed cylindrical shape from a metal material such as stainless steel, has a wide mouth at the upper end, and is provided with a flange 10 that expands outward at the tip of the wide mouth.

The inner container 2 has a lower opening protruding from its lower end for discharging liquid, and a lower pipe 11 formed into a short cylindrical shape made of a metal material such as stainless steel is welded to this lower opening.

The flange portion 10 of the inner container 2 is tightly joined to the lower surface of a peripheral wall forming a central opening of a receiving portion of a shoulder member, which will be described later, via a packing 12. The inner container 2 has a mounting angle 13 fixed to the bottom outer wall. Although the inner container 2 is formed of a single wall with a bottomed cylindrical shape, it may be formed with a vacuum double wall of a bottomed cylindrical shape.

The exterior case 3 is made by folding a thin metal plate into a substantially cylindrical shape, bending the upper peripheral end inward in a stepped manner, and curling the lower peripheral end inward. This approximately cylindrical exterior case 3 has a large cutout on the front surface so that a liquid volume display tube of a liquid discharge mechanism, which will be described later, can be visually seen.

The shoulder member 4 is made of synthetic resin material,
A receiving part 14 having a central opening in the center that communicates with the wide mouth of the inner container 2, a hinge part 15 that hinges a lid body (described later) at the rear end of the receiving part 14, and a beak part 16 in front of the receiving part 14.
It is equipped with This beak part 16 is provided with locking pieces for locking claws for locking a locking device of the lid body, which will be described later, on the left and right sides of the upper wall, and a decorative member 17 is provided at the lower part of the beak part 16.
are arranged in series, and a transparent window portion extending in the vertical direction is formed in this decorative member 17. The receiving portion 14 of the shoulder member 4 has a packing 12 on the peripheral wall forming the central opening.
An annular flange portion 18 is provided which abuts the flange portion 10 of the inner container 2 from above through the flange portion 18 .

The bottom member 5 is made of a synthetic resin material, has an opening at the center, has an upper peripheral end in contact with the curled part of the lower peripheral end of the exterior case 3, connects the lower end of the decorative member 17 to the front surface, and has an opening at the rear end. Plug receiver 19 is installed.

The bottom plate 20 is made of a metal material and has a shape that follows the opening shape of the bottom member 5, and is attached to the mounting angle 13 of the inner container 2 via a bottom screw 21 screwed into the center opening of the bottom member 5. It's closed.

By combining this bottom plate 20, the inner container 2, shoulder member 4,
The exterior case 3 and the bottom member 5 are connected at the same time.

The liquid discharge mechanism 7 includes a pumping pipe 22 that also serves as a liquid volume display tube, a first holder 23 that connects the pumping pipe 22 and the lower pipe 11 of the inner container 2.
A discharge pipe 2 that discharges the liquid inside the inner container 2 to the outside.
4, an upper valve cylinder 25, a lower valve cylinder 26, an upper valve cylinder 25, between the discharge pipe 24 and the pumping pipe 22,
It consists of a valve body 27 that slides within the lower valve cylinder 26 and a second holder 28 that connects the lower valve cylinder 26 and the water pumping pipe 22.

The pumping pipe 22 is installed at the rear of a vertically extending transparent window of the decorative member 17 to display the amount of liquid in the inner container 2.

Both the first holder 23 and the second holder 28 are made of an elastic material.

A block-shaped valve element 27 made of stainless steel or the like is inserted between the upper valve cylinder 25 and the lower valve cylinder 26, and a radial groove is inserted between the outer circumference of the valve element 27 and the inner circumference of the lower valve cylinder 25. The directional ribs form a narrow passageway. When pouring water to the outside, air is sent into the inner container 2 by a bellows pump inside the lid body, which will be described later, so that the liquid in the inner container 2 is transferred to the pumping pipe 22 via the lower pipe 11 and the first holder 23. This liquid then enters from the lower mouth of the lower valve cylinder 26 via the second holder 28 at the tip of the pumping pipe 22, passes through the narrow passage formed by the ribs, and enters the upper valve communicating with the discharge pipe 24. It is discharged from the lower end of the cylinder 25 via the discharge pipe 24.

On the other hand, when the electric pot 1 falls, the valve body 27 moves within the lower valve cylinder 26 and closes the lower opening of the upper valve cylinder 25, so that the liquid in the inner container 2 flows into the pumping pipe 2.
This prevents a large amount of leakage from the discharge pipe 24 via the discharge pipe 24.

The heater 8 that heats the liquid in the inner container 2 is a band heater stretched around the bottom outer periphery of the inner container 2.
It is connected to a plug receiver 19 via a thermistor 9. The thermistor 9 detects the heating temperature of the liquid in the inner container 2 and controls the heating of the heater 8 to maintain the temperature of the liquid in the inner container 2 at a constant temperature.

The lid body 6 includes a lower lid 29 that is integrally formed with a bowl-shaped portion 29a made of synthetic resin that is loosely fitted into the receiving portion 14 of the shoulder member 4, and a front portion 29b that covers the upper surface of the beak portion 16 of the shoulder member.
The upper lid 30 is formed into a hollow block by integrally molding a rear umbrella part that covers the upper part of the bowl-shaped part 29a of the lower lid 29 and a front umbrella part that covers the upper part of the front part 29b. The rear end of the lid body 6 is pivotally supported by a hinge part 15 of the shoulder member 4 via a hinge, and the lid body 6 is rotatable about the axis of this hinge as a fulcrum.
This allows the wide mouth of the inner container 2, which communicates with the receiving portion 14 of the shoulder member 4, to be openable and closable. The lower surface of the bowl-shaped portion 29a of the lower lid 29 is covered with cover plates 31 spaced apart at a predetermined interval.

Furthermore, a locking device equipped with a locking pawl is provided on the front side of the lid body, which is made up of a forward portion 29b of the lower lid 29 of the lid body 6 and a front umbrella portion of the upper lid 30 that covers this forward portion 29b. It is engaged with and disengaged from the lock pawl engagement piece of the beak 16 of the shoulder member 4.

The upper lid 30 has an opening in the approximate center of the rear umbrella part, and has an opening tube part integrally formed with a peripheral wall forming this opening hanging downward, and an outside air port 32 is bored at the upper end of the rear part.

The bowl-shaped portion 29a of the lower lid 29 has an exhaust port 33 in the center that serves as an air path communicating with the inside of the bellows pump, which will be described later.
A channel member 34 is tightly attached to the bottom wall surrounding the exhaust port 33. Bowl-shaped part 2 of the lower lid 29
A plurality of 3 to 4 bosses 35, 3 are provided on the bottom wall of 9a at predetermined intervals around the flow path member 34.
5 is hanging down. The bowl-shaped portion 29a of the lower lid 29 has a steam port 36 that communicates with a steam flow path (described later) at the corner of the bottom wall between the rear bottom wall and the side wall.
A drain port 37 is provided at a corner of the side wall adjacent to the drain port 37 for discharging drain accumulated in the steam flow path, which will be described later.
The bowl-shaped portion 29a of the lower lid 29 communicates the steam port 36 with a joint pipe, which will be described later, and the drain port 3.
When the lid is opened, the drain port 7 opens downward with respect to the lid 6 and into the space above the inner container, and drains accumulated in the steam flow path (described later) is returned to the inner container 2 through this drain port 37. As shown in FIG. 3, the joint pipe 38 that communicates with the steam port 36 of the bowl-shaped portion 29a is cylindrical, has a lower end that communicates with the steam port 36, and a portion of the rear end that is cut out to form a drain port 37. A lower valve cylinder 26' that communicates with the joint pipe 38 and the outside air port 32 of the upper lid 30 at its upper end, and a valve body 2 inserted into the lower valve cylinder 26'.
7' is provided. This lower valve cylinder 26' and the valve body 2
The set of component parts 7' is the same as the set of component parts of the lower valve cylinder 26 and valve body 27 provided in the liquid discharge mechanism 7. Therefore, a narrow passage is formed between the outer periphery of the valve body 27' and the inner periphery of the lower valve cylinder 26' by ribs in the radial direction. 26' enters from the lower inlet port and is discharged from the outside air port 32 through a narrow passage formed by the ribs. On the other hand, when the electric kettle falls over, the valve body 27' moves inside the upper valve cylinder 26' and flows through the outside air port 32. By blocking the inner container, a large amount of liquid in the inner container is prevented from leaking out from the outside air port 32 via the vapor flow path.

The cover plate 31 that covers the bottom wall of the bowl-shaped portion 29a of the lower lid 29 is made of stainless steel and has a dish shape, and has an air supply port 39 that communicates with the air supply path of the flow path member 34 (described later) approximately in the center. A seal gasket 40 is provided on the outer circumferential edge of the bowl-shaped portion 29a, and the outer circumferential edge of the bowl-shaped portion 29a abuts on the lower lid 29. This cover plate 31 is screwed from below toward the boss portions 35, 35 of the bowl-shaped portion 29a.

The space between the cover plate 31 and the bowl-shaped portion 29a of the lower lid 29 is a steam passage 41 that communicates with a steam passage of the passage member 34, which will be described later.

A flow path member 34 interposed between the bowl-shaped portion 29a of the lower lid 29 and the cover plate 31 is formed integrally with the lower lid 29 or as a separate cylindrical body made of synthetic resin material, and the flow path member 34 is formed as a separate cylindrical body from a synthetic resin material. An air supply passage 4 defining a steam passage 42 communicating with the flow passage 41 and communicating with the air supply port 39 at the inner front part.
3, and defines a switching valve chamber 44 that communicates with an air supply path 43, a steam path 42, and an exhaust port 33 above.

A bellows pump 45 is installed inside the upper surface of the bowl-shaped portion 29a of the lower lid 29, and the cylindrical lower edge of this bellows pump 45 is attached to the upper surface of the bowl-shaped portion 29a of the lower lid 29, so that the inside of the bellows pump 45 serves as an exhaust port. The peripheral edge of the upper end plate 46 is fixed to the cylindrical upper edge of the bellows pump.

The upper end plate 46 is located below the open cylinder of the upper lid 30 and forms a guide cylinder part 47 that projects into the bellows pump 45, and a valve body 48 is slidably inserted into the guide cylinder part 47. . The lower end of the valve cylinder 48 is inserted into the exhaust port 33 provided in the lower lid 29, and a switching valve 49 made of an elastic body that expands to a large diameter below the exhaust port 33 is inserted into the inserted end to switch the flow path member 34. It is provided inside the valve chamber 44. Inside the bellows pump 45, a bellows pump return member 5 made of a compression coil spring is disposed between the lower lid 29 and the upper end plate 46.
0 is interposed therebetween, and always urges the upper end plate 46 in the direction of pushing up and inflating the bellows pump 45. The valve cylinder 48 has a locking part that locks in an extended state with respect to the guide cylinder part 47, and presses the switching valve 49 to the exhaust port 33 of the lower lid 29 when the bellows pump 45 is expanded. A pusher body 51 is slidably inserted into the open cylindrical portion of the upper lid 30. Push body 51
In a state where the locking pawl formed on the outer peripheral edge of the lower end is engaged with the lower edge of the open cylindrical portion, the top surface of the pusher does not protrude upward any further. A contact portion is formed at the lower part of the push body 51, and a push body return member 52 made of a compression coil spring having a spring constant smaller than that of the bellows pump return member 50 is interposed between this contact portion and the valve cylinder 48. The pushing body 51 is constantly urged upward.

<Effects of the invention> In this invention, the space between the bowl-shaped part of the lower lid and the cover plate is made into a steam passage that does not require any parts, and the outside air port of the upper lid and this steam passage are connected with a joint pipe. Because they are in communication, the structure is extremely simple, the number of parts is small, and assembly is extremely easy.

Further, since the space between the bowl-shaped portion of the lower lid and the cover plate is used as a direct steam passage, this space, which was previously a dead space, can be used extremely effectively.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a partially enlarged sectional view showing the main parts of the invention, and FIG. 3 is an exploded perspective view showing the main parts of the invention. DESCRIPTION OF SYMBOLS 1...Electric pot, 2...Inner container, 3...Exterior case, 4...Shoulder member, 5...Bottom member, 6...Lid, 7...Liquid discharge mechanism, 8...Heater, 14
...Receiving part, 16...Beak part, 24...Discharge pipe,
26, 26... lower valve cylinder, 27, 27... valve body,
29... Lower lid, 29a... Bowl-shaped part, 29b... Front part, 30... Upper lid, 31... Cover plate, 32... Outside air port, 33... Exhaust port, 34... Channel member, 36
... Steam port, 37 ... Drain port, 38 ... Joint pipe, 39 ... Air supply port, 40 ... Seal packing, 41 ... Steam flow path, 42 ... Steam path, 4
3... Air supply path, 44... Switching valve chamber, 45... Bellows pump, 46... Upper end plate, 49... Switching valve,
50... Bellows pump return spring, 51... Push body, 52... Push body return spring.

Claims (1)

[Scope of utility model registration request] A shoulder member 4 is attached to the upper end of the outer case 3 surrounding the inner container 2.
An annular receiving part 14 with an opening communicating with the mouth of the inner container 2 is provided at the center of the shoulder member 4, a bottom member 5 is connected to the lower end of the outer case 3, and the inner container is connected to the lower part of the inner container 2. A liquid discharge mechanism 7 is provided for discharging the liquid in the inner container 2 to the outside by winding a heater 8 that heats the liquid in the inner container 2, and a lid body 6 consisting of a lower lid 29 and an upper lid 30 with a built-in bellows pump 45 is provided. , top lid 3
An outside air vent 32 is provided at the rear part of the upper end of the lower cover 29, and a bowl-shaped part 29a for opening and closing the receiving part 14 of the shoulder member 4 is provided at the rear part of the lower lid 29.
A bellows pump 45 is provided in the center of the bowl-shaped portion 29.
A cover plate 3 is provided with an exhaust port 33 that communicates with the inside, covers the lower wall of the bowl-shaped portion 29a of the lower lid 29, has a space between it and the bowl-shaped portion 29a, and comes into contact with the lower end of the periphery of the bowl-shaped portion 29a.
1, and a flow path member 34 having an air supply path 43 communicating with the exhaust port 33 and a steam path 42 communicating with the outside air port 32 is provided in the space between the bowl-shaped portion 29a of the lower lid 29 and the cover plate 31. A switching valve 49 for switching between the exhaust port 33 and the steam path 42 is provided in the flow path member 34, and when the lid is closed, the switching valve 49 closes the exhaust port 33 to communicate the inside of the inner container 2 and the steam path 42. The steam in the inner container 2 is discharged to the outside air port 32 of the upper lid 30, and when the bellows pump 45 is pressed, the switching valve 49 closes the steam passage 42 and the steam is discharged into the bellows pump 45 and into the inner container 2 through the exhaust port 33. In an electric pot using pneumatic pressure that communicates with the inner container 2 and discharges the liquid in the inner container 2 to the outside via the liquid discharge mechanism 7, the vapor path 4 of the flow path member 34
2 directly communicates with the space between the bowl-shaped portion 29a of the lower lid 29 and the cover plate 31 to form a steam flow path 41, and the lower lid 2
A steam port 36 that communicates with the steam flow path 41 on the rear wall of the bowl-shaped portion 29a of 9, and a drain port 37 that faces downward with respect to the lid body 6 and communicates with the receiving portion 14 of the shoulder member 4 when the lid is opened.
are provided in close proximity to each other, while the outside air port 32 of the top cover 30
This electric kettle using air pressure is characterized by being provided with a joint pipe 38 which communicates the steam port 36 of the lower lid 29 with the steam port 36 of the lower cover 29.