JP3356661B2 - an electronic pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pot having an outer casing and an inner container which can be freely inserted into and removed from the outer casing, and which has a water heating function and a heat retaining function.

[0002]

2. Description of the Related Art A conventional separation-type electric electric pot having a water heating function and a heat retaining function is disclosed in Japanese Utility Model Laid-Open No. 4-140517.
As disclosed in Japanese Patent Laid-Open Publication No. HEI 9-205, there is a case where an inner container is freely inserted into and removed from an outer casing for the purpose of washing and drying the inner container.

According to a conventional electric pot of this type, an electric pump is provided for discharging the liquid in the inner container from a spout provided on the exterior body. The output can be set arbitrarily.

[0004] Further, an electric pump is provided with a driving portion provided on the outer body and provided with a motor, a casing provided on the inner container and mounted in communication with the inner container, and an impeller arranged in the casing. Since the magnetic coupling means is provided between the driven part and the driven part, the magnetic coupling means capable of transmitting the rotational force of the electric motor to the shaft of the impeller through the casing wall in a non-contact state. In addition, there is no need to mechanically connect the driving part and the driven part, and there is no problem in getting the inner container out of the exterior body.

[0005] Therefore, when the inner container is taken out of the outer package for washing, only the driven portion is attached to the inner container, and the driving portion is held in a state of being attached to the outer package. Moreover, since the hermetically sealed casing of the driven portion is attached to the inner container in a communicating manner, there is no need to make the connection between the casing and the inner container detachable, and it is possible to ensure the seal between the two. it can.

[0006]

However, the appearance of the inner container when the inner container is taken out is important for the impeller portion of the electric pump having the above-mentioned separated structure, and the impeller must be mounted vertically. The hot water supply port of the electric pump impeller usually has a structure that sucks in from the upper center.
Due to the structure of the product, the position of the impeller part is almost at the same height as the bottom of the inner container.

Therefore, a hot water supply port from the inner container to the upper impeller inlet port is required on the side wall of the upper inner container of the impeller section. Therefore, since there is a hot water supply port at the height of the upper portion of the impeller, even if all the operations for tapping water are performed. Hot water remains near the bottom of the inner container.

Further, since the impeller section is mounted vertically, it is necessary to mount the motor section (motor section) vertically. For this reason, if the motor section is mounted vertically on the bottom of the exterior section, the height of the product becomes high. It becomes a big product.

The motor part is also an electrical component and needs to prevent water or the like from entering. For this purpose, the motor case is fixed by inserting the motor part covered with a non-magnetic cover into the bottom plate in the exterior part. Therefore, there is a problem that a step is formed between the bottom plate in the exterior part and the motor case, resulting in an unsightly state, and cleaning is not easy.

[0010]

SUMMARY OF THE INVENTION The electric pot of the present invention solves the above-mentioned problem. To reduce the amount of hot water remaining near the bottom of the inner container as much as possible, it is necessary to supply the electric water from the inner container to the upper inlet of the impeller section. The impeller section and the motor section, which need to lower the position of the inner-wall side hot water inlet, are each equipped with a permanent magnet and operated by magnetic coupling means, and the impeller section permanent magnet is made into a thin magnetic material such as an iron plate. The permanent magnet is made of a ferrite having a large thickness, and is made of a thin magnetic material (iron plate or the like) so that the height of the impeller portion can be reduced.

Further, in order to further reduce the height of the product, the motor-side permanent magnet is similarly made of a thin plate magnetic material, and the impeller side is made of a permanent magnet, thereby making it possible to reduce the motor-side height. Things.

The bottom plate in the exterior part is made of the same non-magnetic material as the motor case lid and integrated, so that there is no step between the motor and the bottom plate in the exterior part. In addition, there is no water infiltration, and the insulation performance of the motor is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the electric pot of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show the overall structure of an electric pot according to the present invention, and FIGS. 3 to 5 show the essential parts thereof. In the following description, the pouring section side, that is, the left side in FIG. Also, the left and right may be toward the rear, and the left and right in FIGS. 3 to 5 may be referred to as left and right. FIG. 6 is a plan view of a permanent magnet, and FIG. 7 is a plan view of a thin magnetic body (iron plate or the like).

In FIGS. 1 and 2, the electric pot is
A cylindrical body 2 having an open upper end and a closed lower end
And a cover 3 having a rear end pivotally attached to a rear end of an upper end of the tubular main body 2 and capable of being opened and closed. An inner container 4 is put in and out of the exterior body 1. An electric pump 5 for discharging liquid in the inner container 4 is provided at a lower portion between the outer package 1 and the inner container 4.

A pair of notches 14 are formed at the upper end of the cylindrical body 2 of the exterior body 1, and the handle support 7 of the inner container 4 is fitted in the notch 14. Further, in the front part of the cylindrical body 2, there is a see-through window 15 for visually checking the liquid pumping pipe 9 through the see-through window 12 of the cover 11 so that the amount of liquid can be confirmed from outside the exterior body 1.
Is formed. An injection pipe 1 at the front of the upper end of the cylindrical body 2
An outlet 16 having 7 is provided. The switch 18 of the electric pump 5 is provided on the upper surface of the pouring section 16.

Although illustration is omitted, on the upper surface of the pouring section 16, there are provided states such as "hot water" and "heat keeping", a display section for displaying temperature, a switch for hot water again, and the like. I have. At the front end of the lid 3 of the exterior body 1, a liquid passage pipe 19 is provided.
Is provided. When the lid 3 is closed, one end of the liquid passage pipe 19 faces the opening at the upper end of the discharge pipe 17, and the other end thereof comes into contact with the expanded part at the upper end of the liquid pumping pipe 9 in a watertight manner. I have.

The inner container 4 has a substantially D-shaped horizontal cross section, and has a flat portion 4a at the front. A circular frame 6 is fixed to the upper end of the inner container 4, and a pair of left and right handle support portions 7 is fixed to the frame 6.
Are provided in an outwardly projecting shape. Both ends of a substantially U-shaped handle 8 arranged outside the exterior body 1 and for carrying a pot are pivotally attached to the handle support 7. A transparent liquid pumping pipe 9 extending vertically is disposed outside the flat part 4a of the inner container 4. The upper end of the pumping pipe 9 is frame 6
Is fixed to a portion protruding forward from the upper end of the flat portion 4a. The upper end of the liquid pumping pipe 9 is expanded in a tapered shape.

On the flat portion 4a, a synthetic resin cover 11 having a circular cross section having thermal insulation is attached so as to cover the liquid pumping tube 9, and the inner container 4 including this cover 11 is provided.
Has a cylindrical shape. Pumping pipe 9 on cover 11
A see-through window 12 for viewing the image is formed. Also,
A grasping portion 13 is formed on the outer surface of the cover 11 to supply water to the inner container 4 and to hold the inner container 4 for washing.

The electric pump 5 comprises a driving part 21 provided on the exterior body 1 and having a motor 22 and a driven part 23 having an impeller 24. As shown in FIG.
Is a closed-end cylindrical synthetic resin casing main body 26 fixed to the cylindrical main body 2 of the exterior body 1, and a closing plate 27 made of a high magnetic permeability material and closing an upper end opening of the casing main body 26.
Is provided.

The motor 22 is fixed upward to the outer surface of the bottom wall of the casing body 26, and the motor shaft 22a extends through the bottom wall into the casing 25. Motor shaft 2
A disk-shaped first joint member 28 is fixed to 2a. A fan-shaped permanent magnet 29 having magnetic poles at both upper and lower ends is fixed to the upper surface of the first joint member 28. FIG. 6 shows two fan-shaped permanent magnets.
FIG.

The driven part 23 is a stepped tubular synthetic resin casing body 32 fixed to the inner container 4 and opened at both upper and lower ends, and a casing body 3 made of a high magnetic permeability material.
2 is provided with a casing 31 comprising a closing plate 33 for closing a lower end opening in a watertight manner. An opening at the upper end of the casing body 32 is a suction port 34.

A discharge port 35 projecting leftward is formed integrally with a lower portion of the casing body 32. The suction port 34 is fixedly connected to the other end of the elbow 36 whose one end is connected to the inner container 4. The discharge port 35 is fixedly connected to the lower end of the liquid pumping tube 9 via an elbow 37. Inside the small diameter portion 32a of the casing main body 32, a cylindrical body 38 having a smaller diameter than this is provided integrally with the casing main body 32 via a plurality of arms 39. A liquid passage is formed between the arms 39 connecting the small diameter portion 32a and the cylindrical body 38.

An upper part of a shaft 41 extending vertically is fixedly inserted into the cylindrical body 38, and the impeller 24
Are rotatably mounted via bearings 42 that can be supported in the axial and radial directions. Bearing 42
Is fixed to the impeller 24.

The impeller 24 is formed by integrally forming a plurality of blades 24b on the upper surface of a disk 24a. The first coupling member 28 is provided on the lower surface of the disk 24a via both closing plates 33 and 27.
And a second joint member 51 opposed thereto is integrally formed.
That is, the propeller-like thin plate magnetic body 50 is fixed to the lower surface of the disk 24a. This propeller-like thin plate magnetic body 50 is shown in FIG.
As shown in (1), the number of fan-shaped permanent magnets 29 of the first joint member 28 is the same as the number of propellers.

Next, another embodiment of the electric pot of the present invention will be described with reference to FIG.

The electric pump 5 includes a driving part 21 provided on the exterior body 1 and having a motor 22 and a driven part 23 having an impeller 24. As shown in FIG.
Is a closed-end cylindrical synthetic resin casing main body 26 fixed to the cylindrical main body 2 of the exterior body 1, and a closing plate 27 made of a high magnetic permeability material and closing an upper end opening of the casing main body 26.
Is provided.

The motor 22 is fixed upward to the outer surface of the bottom wall of the casing body 26, and the motor shaft 22a extends through the bottom wall into the casing 25. Motor shaft 2
A disk-shaped first joint member 28 is fixed to 2a. The first joint member 28 is a propeller-like thin plate magnetic body 50.

The driven portion 23 is a stepped cylindrical synthetic resin casing body 32 fixed to the inner container 4 and opened at both upper and lower ends, and a casing body 3 made of a high magnetic permeability material.
2 is provided with a casing 31 comprising a closing plate 33 for closing a lower end opening in a watertight manner. An opening at the upper end of the casing body 32 is a suction port 34.

In the lower part of the casing body 32, a discharge port 35 projecting leftward is formed integrally. The suction port 34 is fixedly connected to the other end of 36 whose one end is connected to the inner container 4. The discharge port 35 is fixedly connected to the lower end of the liquid pumping tube 9 via an elbow 37. A cylindrical body 38 having a smaller diameter than the cylindrical body 38 is provided in the small diameter portion 32a of the casing main body 32 via a plurality of arms 39.
2 and are provided integrally. Small diameter portion 32a and cylindrical body 3
A liquid passage is provided between the arms 39 connecting the first arm 8 and the second arm 8.

The upper part of a shaft 41 extending vertically is inserted and fixed to the cylindrical body 38, and the impeller 24
Are rotatably mounted via bearings 42 which can be supported in the axial and radial directions. Bearing 4
2 is fixed to the impeller 24. The impeller 24 is the disk 2
A plurality of blades 24b are integrally formed on the upper surface of 4a, and a second joint member 43 facing the first joint member 28 via both closing plates 33 and 27 is integrally formed on the lower surface of the disk 24a. Is formed.

That is, the annular groove 24 is formed on the lower surface of the disk 24a.
The fan-shaped permanent magnet 44 having magnetic poles at both upper and lower ends is fixed in the annular groove 24c. The number of the fan-shaped permanent magnets 44 is the same as the number of propellers of the propeller-shaped thin plate magnetic body 50. The annular groove 24c is closed by a magnetically permeable closing plate 45 made of synthetic resin and attached to the lower surface of the disk 24a.

In a state where the inner container 4 is put in the exterior body 1,
The casing 31 of the driven part 23 is mounted on the casing 25 of the driving part 21, and the shaft 41 and the motor shaft 22a are located on the same vertical line. In this state, when the electric motor 22 is operated by operating the switch 18, the electric motor shaft 22a
Rotates, and the first joint member 28 rotates with this.
This rotational force is transmitted to the impeller 24 via the second joint member 51 by the action of the magnet 29 and the propeller-like thin plate magnetic body 50 or the second joint member 43 by the action of the magnet 44 and the propeller-like thin plate magnetic body 50, The impeller 24 rotates.

As a result, the hot water in the inner container 4
6, the casing 25 of the driven part 23 from the suction port 34
The liquid flows into the pumping pipe 9 from the discharge port 35, and is further discharged from the tip outlet of the discharging pipe 17 through the liquid flowing pipe 19 and the discharging pipe 17. The dispensing amount can be arbitrarily set by operating the switch 18.

When the lid 3 is opened and the inner container 4 is taken out, only the driven part 23 is taken out together with the inner container 4. Therefore, when water is supplied to the inner container 4 or when the inner container 4 is washed, there is no effect even if water is applied to this portion. When the inner container 4 is put into the exterior body 1 again, the driven portion 23
Is located on the prime mover 21, and as described above, hot water can be poured out by operating the switch 18.

FIG. 5 shows another embodiment of the electric pot of the present invention.

In FIG. 5, a driving part (motor part) 21 and a driven part (impeller part) 23 are provided so as to be vertically coaxial. Both closure plates 27, 33 are also located in a vertical plane. In addition, the closing plate 27 of the driving unit 21 is formed integrally with the bottom plate 53 of the exterior body (the cylindrical main body 2) by using a non-magnetic material.

Therefore, when the inner container 4 is taken out of the exterior body 1 and the driven part 23 is taken out of the driving part 21, the casing 25 of the electric pump 5 is located on the lower surface of the bottom plate 53. For this reason, the prime mover surface of the bottom plate 53 has a smooth convex shape and has good appearance and is easy to clean. When the inner container 4 is put into the exterior body 1 again, the rotational force of the electric motor shaft 22a is surely increased through the two joint members 28 and 51.
Transmitted to

[0039]

Since electric kettle of the present invention exhibits a structure as described above, the driving unit by providing a thin plate magnetic member to the drive unit
Since the height is reduced, the product height can be reduced. Also,
There is no step between the motor and the bottom plate in the exterior,
And the driven part is removed from the driving part.
The bottom plate is clean and clean.
Cheap. In addition, by integrating the closing plate of the driving part and the bottom plate of the exterior body with a non-magnetic material, intrusion of water can be prevented, the insulation performance to the driving part is completed, the appearance is improved, and the cleaning property is improved. Furthermore, the position of the water supply port on the inner container side wall is lowered.
Therefore, the amount of remaining hot water can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall exploded perspective view showing an embodiment of an electric pot of the present invention.

FIG. 2 is a partially cutaway side view of the electric pot shown in FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2;

FIG. 4 is an enlarged sectional view showing another embodiment of the electric pot of the present invention.

FIG. 5 is an enlarged sectional view showing another embodiment of the electric pot of the present invention.

FIG. 6 is a plan view of a fan-shaped permanent magnet showing an embodiment of the electric pot of the present invention.

FIG. 7 is a plan view of a propeller-like thin plate magnetic body showing an embodiment of the electric pot of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer body 4 Inner container 5 Electric pump 21 Drive part 23 Driven part 24 Impeller 28 1st joint member 29 Permanent magnet 31 Casing 43,51 2nd joint member 44 Permanent magnet

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-215048 (JP, A) JP-A-8-84665 (JP, A) JP-A-6-80895 (JP, U) 22996 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 27/21 101 F04D 13/02 F16D 7/02

Claims (3)

(57) [Claims] 1. An electric pot comprising an outer package and an inner container which is freely inserted into and removed from the outer package, wherein a liquid in the inner container is filled between the outer package and the inner container. provided an electric pump to exit the spout Note provided within the electric pump, is integrated in the bottom plate bottom surface of the exterior body, and a driving unit having an electric motor, provided in the inner container, In addition, the casing is connected to the inner container and placed inside the casing, and the magnet is fixed.
It is more becomes a driven part having an impeller, between the motor and the bottom plate of the moving member, of the impeller in a non-contact state through the rotational force of the motor and the bottom plate wall of the casing Magnetic coupling means comprising a thin plate magnetic material that can be transmitted to a shaft is provided, and when the inner container is placed in the outer container, the bottom plate is removed.
The magnetic coupling means and the impeller of the driven part
An electric pot characterized by being directly on the same axis . 2. A magnet is provided in the magnetic coupling means of the driving unit.
2. The electric pot according to claim 1 , wherein the impeller of the driven part is provided with a thin plate magnetic body . 3. The thin plate magnet according to claim 3, wherein the magnet is a sector-shaped permanent magnet.
The propeller-like thin plate magnetic material, wherein the fan-shaped permanent magnet
Is the same as the number of propellers of the propeller-like thin plate magnetic material.
And two or more fan-shaped permanent magnets and two propellers
Claim 1 or claim 2 electric kettle according to, characterized in that more than.