JPS6336973Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an electric pot that displays the amount of liquid.

[Conventional technology]

Conventionally, electric pots have a single bottomed cylindrical inner container with a heating element attached to the outer periphery of the lower end to heat and keep the liquid inside the inner container warm, and a through hole is drilled on the front wall and lower end of the inner container. The liquid level in the inner container was displayed by communicating the upper and lower ends of the liquid level display tube of a hollow transparent pipe located at the front of the inner container with each through hole in the inner container, but this type of electric pot However, because of the single-layer inner container, the heat retention was poor, and the heating element remained on for a long time, resulting in high power consumption and was uneconomical. An electric pot can be seen hanging down from the mouth, but since the inner container of this type of electric pot is double vacuumed, it is difficult to penetrate the through hole in the front wall, making it difficult to attach the liquid level display tube that communicates with the inside of the inner container. It was hot.

[Purpose of invention]

The present invention has been made in view of the above points, and the object is to provide an electric pot that is easy to install and is economical.

[Structure of the idea]

According to the present invention, the inner container is a vacuum double-ended container with vacuum insulation between the inner and outer walls and openings at the top and bottom ends, and a heating element is installed at the top while shielding the circumference of the vertical hollow pipe. The heating element is wound into a disk shape, the upper part of the heating element passes through the bottom opening of the inner container, and is fixed to the inner bottom of the inner container, and one end of the hollow pipe protruding from the outer bottom of the inner container is communicated with the lower end of the liquid level display tube. It's just trying to achieve the goal.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

The electric pot 1 includes an inner container 3 surrounded by an outer case 2, and a drainage member 4 connected to the upper end of the outer case.
, an inner stopper 5 that is detachably attached to the center opening of the drainer, an upper lid case 6 that can be opened and closed to the upper end of the drainer, and a bottom member 7 that covers the bottom of the inner container at the lower end of the outer case. A heating element 8 that heats the liquid inside the container, and a temperature controller 9 that turns the heating element ON and OFF by sensing the temperature of the liquid inside the inner container or the atmospheric air.
and a liquid amount display device 10 that displays the amount of liquid in the inner container.
It is composed of.

The exterior case 2 is made of a thin iron plate formed into a cylindrical shape,
The upper and lower ends are curled inward to provide a gap with the inner container 3.

The inner container 3 is composed of an inner wall 11 and an outer wall 12 made of metal such as stainless steel, with a wide opening at the center of the upper end and a narrow opening at the center of the lower end, and vacuum insulation is provided between the outer walls. The inner wall 11 includes a cylindrical inner wall trunk, an upper inner wall mouth portion that is curved inward from the upper end of the inner wall trunk and whose upper part has a diameter slightly smaller than the diameter of the inner wall trunk, and a lower end of the inner wall trunk. The lower part is curved inward and is integrally molded with a lower inner wall mouth portion having a smaller diameter than the upper end inner wall mouth portion.

A lower annular projection 16 having a diameter smaller than the diameter of the inner wall trunk is provided at the lower end of the inner wall trunk of the inner wall, and an upper annular projection 16 having a diameter smaller than the diameter of the upper inner wall opening is provided at the lower end of the upper inner wall opening. A projection 17 is provided.

The outer wall 12 is formed at a predetermined distance from the inner wall 11, and includes a cylindrical outer wall trunk, an upper flat part at the upper end of the outer wall trunk, and a lower flat part at the lower end of the outer wall trunk. There is.

The upper flat portion of the outer wall has its tip welded to the outer periphery of the upper inner wall mouth portion of the inner wall 11, and a plurality of upper angles 21, 21 are provided on the circumferential surface at predetermined intervals. The lower flat part of the outer wall has its tip welded to the outer periphery of the mouth of the lower inner wall of the inner wall 11, and a plurality of lower angles 22, 22 are provided on the circumferential surface at predetermined intervals.

The upper angle 21 is formed by bending an elongated flat plate into a longitudinal cross-sectional shape, and has a bolt hole bored in the center of the top of the chevron shape, and the hems at both ends are spot welded to the upper flat part of the outer wall 12 of the inner container. ing.

The lower angle 22, like the upper angle 21, is formed by bending an elongated flat plate into a longitudinal cross-sectional shape.A screw hole is drilled in the center of the top of the chevron, and when the lower angle is turned upside down, both end skirts are attached to the outer wall of the inner container. It is spot welded to the lower flat part of No. 12.

The drainage member 4 has an opening in the center that communicates with the mouth of the upper end of the inner container, a beak for placing the inner plug 5 described below on the inner wall portion forming this opening, a receiving portion that expands upward except for the front portion, a shoulder portion that expands outward from the upper end of the receiving portion, and an outer wall portion that hangs down from the outer end of the shoulder and abuts the upper end of the outer case 2.

At the rear end of the inner peripheral wall that forms the opening of the draining member,
Temperature regulator lead wire 31 of the temperature regulator 9 described later
A through hole is formed to guide the fluid into the gap between the outer case and the inner circumferential wall of the draining member, and a through hole is formed at the tip to communicate with an upper pipe 34 of the liquid level display device 10, which will be described later.

The shoulder portion of the draining member 4 is provided with a plurality of bolt holes corresponding to the upper angles 21, 21 of the inner container, and a mounting flange at the lower end of the bolt hole.

The draining member 4 and the inner container are fixed by passing a bolt through a bolt hole in the shoulder of the draining member into a mounting flange and screwing into the upper angle of the inner container.

The inner stopper 5 includes an inner stopper main body including an air circulation part that guides the air inside the bellows pump 40 (described later) into the inner container and a liquid flow part that leads the liquid inside the inner container, and an upper end that is connected to the liquid flow part of the inner stopper main body. A pumping pipe 42 whose lower end hangs down into the inner container, a discharge pipe 43 whose rear end communicates with the liquid circulation part of the inner stopper body and whose other end led to the outside of the pot, and an inner circumferential wall at the center of the drainage member. It consists of a cover plate 44 made of stainless steel that closes the upper end of the section.

This cover plate 44 is attached to the lower surface of the inner plug main body, has a through hole that communicates with the air circulation part of the inner plug main body, and has an annular packing attached to the outer peripheral end that contacts the upper end of the inner peripheral wall of the draining member. It is set up.

This annular packing has a shape that corresponds to the upper end circumferential surface of the inner peripheral wall of the draining member, and integrates an abutting part that comes into contact with this circumferential surface and a fold part that hangs diagonally downward inward from the lower end of the abutting member. It is molded. The tip of this pleat has a diameter smaller than the diameter of the inner circumferential wall of the draining member.

The upper lid case 6 includes an upper lid 50, a lower lid 51, a bellows pump 40, a first spring 52 that constantly pushes and expands the bellows pump, an upper plate 53 that is screwed onto the upper surface of the bellows pump, and an upper end of the upper plate. a pusher body 55 to which a contact portion 54 that abuts is fixed; a second spring 56 that constantly pushes up the pusher; and a hinge device 57 that hinges the upper lid case to the draining member;
It consists of a locking device 58 that locks the upper lid case to the upper end of the draining member.

The upper lid 50 has a hinge device 57 at the rear end of the draining member.
The inner circumferential surface is provided with a plurality of horizontal ribs that abut the lower end of the umbrella of the pusher body 55, which will be described later, to restrict the descent of the pusher body, and the center part of the upper surface has a plurality of horizontal ribs that extend downwardly. A guide tube 60 is provided vertically toward the target. A plurality of hanging ribs are provided on the outer periphery of the lower end of the guide tube at predetermined intervals and abut against the upper surface of the covering portion of the upper plate, which will be described later.

The bellows pump 40 has a bellows-shaped central outer periphery, opens at the center of the upper and lower ends, uses the upper end as an air intake port, and the lower end as an air outlet, and the peripheral wall forming the air outlet is fitted inside the rubber valve 64. , upper plate screws are carved on the outer peripheral surface of the peripheral wall forming the air intake port.

The upper plate 53 is made by integrally molding a covering part that covers the upper surface of the bellows pump 40, a cylindrical part hanging upward from the center of the covering part, and an annular square-shaped flange part extending from the top of the cylindrical part to the center. are doing. The lower inner wall of the cylindrical portion is provided with a screw that is screwed into the upper plate screw of the bellows pump.

The first spring 52 has its lower end in contact with the lower inner surface of the bellows pump 40 and its upper end in contact with the lower surface of the flange of the upper plate, thereby constantly pushing and expanding the bellows pump.

The pushing body 55 includes a pressing part on the top surface, a cylindrical part that hangs downward from the tip of the pressing part and moves up and down within the guide cylinder of the upper lid 50, and a part that expands below the guide cylinder from the lower end of the cylindrical body. The rugged umbrella part is integrally molded.

An abutting part 54 that contacts the upper end of the flange part of the upper plate 53 is fixed to the lower center surface of the pressing part with screws, and a steam vent hole 75 is bored in the front part. This contact portion 54 is in close contact with the upper end of the flange portion of the upper plate through a seal member only when the pushing body is pressed, and a gap for air circulation is normally provided between the contact portion 54 and the upper end of the flange portion. .

A plurality of vertically elongated holes are bored in the circumferential surface of the umbrella portion of the pusher body, through which the hanging ribs of the guide tube pass. A notch is provided on the outer peripheral edge of the umbrella part of the pusher so that it does not come into contact with the upper end of the horizontal rib of the upper cover when the pusher is lowered. The outer peripheral end of the umbrella portion is brought into contact with the upper end of the horizontal rib, and the pusher is rotated to match the notch and the horizontal rib when pressed.

The second spring 56 has a lower end in contact with the upper surface of the flange portion of the upper plate, an upper end in contact with the lower surface of the pusher, and constantly pushes the pusher upward.

The lower lid 51 is fitted to the inner periphery of the lower end of the upper lid,
An air exhaust hole is bored in the center of the lower end via a rubber valve 64. An annular hanging rib is provided on the outer periphery of the lower end of this air discharge hole.

The rubber valve 64 is made of a heat-resistant and corrosion-resistant synthetic resin material, and has an annular groove on the outer periphery into which the air exhaust hole of the lower cover is fitted, and an annular groove on the inner periphery into which the air outlet of the bellows pump 40 is fitted and locked. an upper flat part that extends from the outer periphery of the lower end of the cylindrical body and comes into contact with the lower surface between the air exhaust hole of the lower cover and the annular hanging rib, and a lower flat part below the tip of the upper flat part. The abdomen of the bellows part that comes into contact with the inner periphery of the annular hanging rib of the lid and the lower flat part that extends inward from the lower end of this abdomen and comes into contact with the outer periphery of the upper end of the air circulation part at the upper end of the inner stopper 5 are integrally molded. There is. The tip of this lower surface flat portion extends toward the inner side of the center.

The bottom member 7 consists of a bottom ring 87 with a central opening that contacts the lower end of the outer case, a bottom plate 88 that closes the center opening of the bottom ring, and a joint member 89 interposed between the bottom plate and the bottom of the inner container. There is.

The bottom plate 88 is formed into a disk shape from a metal material such as an iron plate, serves also as a heat sink, and has its outer peripheral end in contact with the lower end surface of the peripheral wall forming the central opening of the bottom ring 87 . This bottom plate 88 has a joint member screw hole bored at a position on the peripheral wall opposite to the bottom plate screw hole of the joint member 89.

The joint member 89 is made by bending a flat metal plate such as an iron plate into a vertical cross-sectional shape, and a central hole is bored in the center of the top of the chevron shape into which a heating element lead wire 93 and a first holder 94, which will be described later, can be inserted. A lower angle screw hole communicating with a screw hole of the lower angle is bored on the peripheral surface of the bottom of the inner container facing the lower angle 22.

Screw holes for the bottom plate that communicate with the screw holes for the joint member of the bottom plate 88 are bored in the hem portions of both ends of the joint member, respectively.

The joint member 89 and the inner container 3 are fixed by screwing a first screw into the screw hole of the lower angle 22 of the inner container from the lower end of the lower angle screw hole of the joint member, and the joint member and the bottom plate 88 are A second screw is screwed into the bottom plate screw hole of the joint member 89 from the lower end of the joint member screw hole of the bottom plate to fix it.

The outer case 2 and the bottom ring 87 are held together by bolting the draining member 4 and the upper angle 21 of the inner container 3, and by screwing the lower angle 22 of the inner container and the bottom plate 88 through a joint member 89. It is a combination.

The heating element 8 passes through the bottom opening of the inner container and is fixed to the inner bottom of the inner container, and includes a heater 100 wound in a disc shape that heats the liquid, and a heater 100 that passes through the center of the disc heater. It consists of a distribution pipe 104 and a cover member 101 surrounding the heater.

The heater 100 has two power outputs: approximately 450W for boiling water and approximately 10W for keeping water warm.

The cover member 101 includes a disk portion 102 that covers the heater 100 and a cylindrical portion 1 that passes through the lower end opening of the inner container.
03, one end of which passes into the inner container, passes through the center of the disk portion 102 to the center of the cylindrical body portion 103, and the other end extends to the outer bottom of the inner container to provide a liquid level display device 10, which will be described later. A distribution pipe 104 communicating with the first holder 94 is inserted therethrough.

Reference numeral 105 is a waterproof and heat insulating packing formed into a cylindrical body, and has upper and lower pleats 106 and 106, respectively, on the outer periphery of the upper and lower ends, which extend outward and sandwich the lower end opening of the inner container from the inside and outside. .

The cylindrical body part 103 of the cover member 101 has an annular projection 107 bored on the upper outer periphery and a screw 108 on the lower outer periphery.
The cylindrical body is engraved by pressing down from inside the inner container toward the annular waterproof and insulating packing 105 stretched over the lower end opening of the inner container until the screws of the cylindrical body protrude outside the inner container. A nut 109 is screwed onto the screw.

This covering member 101 includes a waterproof insulation packing 105
It is supported by a protrusion 107 on the cylindrical body inside the inner container and a nut 109 outside the inner container via the inner container, and is tightly attached to the lower opening of the inner container.

The heating element lead wire 93 of the heater 100 passes through the cylindrical portion 103 of the cover member 101 while being surrounded by an insulator, and is connected to a plug receiver 110, a kettle, and heat-retaining lamps 111 and 112, which will be described later.

Reference numeral 110 is connected to the rear lower end of the exterior case with a plug holder, and 111 and 112 are lamps for boiling water and keeping warm.

The temperature regulator 9 is suspended and supported at the upper part of the inner container, and includes a temperature sensor 113 that detects the liquid or atmospheric air in the inner container and turns the heating element on and off, and a sensor surrounding the sensor. Covering member 1
14 and a temperature controller lead wire 31.

The sensor 113 is composed of a thermistor, a thermal reed switch, or the like, and includes a boiling detection sensor that detects the boiling temperature and a heat retention detection sensor that detects the heat retention temperature.

The sensor covering member 114 is hollow inside and covers the sensor 113 at its tip, and its rear end, which has a screw cut into its outer periphery, passes through a through hole at the rear end of the inner peripheral wall of the draining member 4 . This sensor covering member 114 is suspended and fixed to the rear end of the inner circumferential wall of the draining member with a nut screwed onto a screw on the outer circumference of the rear end.

One terminal of the temperature regulator lead wire 31 connected to the sensor 113 for boiling detection is connected to the heater 100 and the boiling lamp 111, and one terminal of the temperature regulator lead wire 31 connected to the sensor 113 for heat retention detection is connected to the heater 100 and the boiling lamp 111. One terminal is connected to the heater 100 and the heat-retaining lamp 112.

The liquid level display device 10 includes an upper pipe 34 and a fourth
It consists of a holder 116, a liquid level display tube 117, a third holder 118, a connecting pipe 119, a second holder 120, a lower pipe 121, a first holder 94, a distribution pipe 104, and an upper pipe 34. , connecting pipe 119, lower pipe 1
21. The flow pipe 104 is made of a heat-resistant and corrosion-resistant material and is formed into a hollow shape, and the fourth to first holders are made of a heat-resistant and corrosion-resistant elastic material and are formed into a hollow shape with an L-shaped longitudinal section.

The liquid level display tube 117 is formed of a transparent pipe made of glass, acrylic resin, or the like.

The upper pipe 34 has one end communicating with the upper part of the inner container through the upper pipe through hole of the draining member 4, and the other end communicating with the liquid level display tube 11 through the fourth holder 116.
7, the lower end of the liquid level display tube 117 communicates with a connecting pipe via a third holder 118, and the other end of the connecting pipe 119 communicates with the second holder 12.
0, the other end of the lower pipe 121 communicates with the distribution pipe 104 via the first holder 94, and the other end of the distribution pipe 104 passes through the center of the cover member 101 of the heating element 8. and communicates with the inner bottom of the inner container 3.

122 is an auxiliary pipe that guides the liquid from the tip of the discharge pipe 43 downward; 123 is a cover that covers the front part of the pot together with the auxiliary pipe;
The front part of 7 is cut out vertically, and a transparent material is placed over this cutout. 24 is a handle.

[Effect of idea]

In the present invention, the lower end of the hollow pipe protruding outside the inner container and the liquid level display tube can be easily attached even after the heating element is fixed to the inner bottom of the inner container, and the heater can be installed around the top of the hollow pipe. It is very compact because it is stretched.

In addition, since the inner container is double vacuumed and the heating element is fixed to the bottom opening of the inner container, the moisturizing effect is even better, and the heating element turns on and off slowly, making it economical.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, and FIG. 2 is an enlarged longitudinal cross-sectional view showing essential parts of the embodiment of the present invention. 1...Electric pot, 2...Exterior case, 3...
Inner container, 8... heating element, 10... liquid level display device,
11... Inner wall, 12... Outer wall, 100... Heater, 101... Covering member, 104... Distribution pipe,
117...Liquid level display tube.

Claims (1)

[Scope of utility model registration request] An electric pot that includes an inner container surrounded by an outer case, a heating element that heats and keeps the liquid in the inner container warm, and a liquid level display tube that displays the amount of liquid in the inner container on the front of the inner container. In this case, the inner container is vacuum insulated between the inner and outer walls, and is made into a vacuum double-ended container with openings at the top and bottom ends, and a heating element is placed around a vertical hollow pipe while a heater is installed in a circle at the top. The heating element is wound in a plate shape, the upper part of the heating element passes through the bottom opening of the inner container, and is fixed to the inner bottom of the inner container, and one end of the hollow pipe protruding from the outer bottom of the inner container is connected to the lower end of the liquid level display tube. An electric pot featuring