JPS6028349Y2 - Electric kettle liquid level display device - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a liquid level display device for an electric kettle.The purpose of the invention is to create an electric kettle that has a simple structure and can also see through the liquid level and temperature in the inner container at the same time. To provide a liquid level display device.

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

An electric pot A that heats water and keeps it warm has an inner container 2 surrounded by an outer case 1, a liquid level display device B interposed between the inner container and the outer case, and a liquid level display device B that displays the amount of liquid in the inner container. A heat source 3 fixed to the outer wall of the lower end of the inner container to heat the liquid in the inner container, and a temperature controller C to control the heat source by sensing the temperature of the liquid in the inner container.
A bottom body 4 attached to the lower end of the outer case, a draining member 5 attached to the upper end of the outer case, an inner stopper 6 detachably attached to the center opening of the draining member, and a bottom body 4 attached to the upper end of the draining member so as to be openable and closable. It is composed of a lid body 8 having a built-in bellows pump 7.

The inner container 2 is formed into a bottomed cylindrical body made of an ablative material such as stainless steel, and has through holes 9 for the joints 15 of the liquid level display device B at both upper and lower ends of the front side wall, respectively. An annular collar portion 10 bent outward at the upper peripheral end forming a central opening.
A heat-resistant and corrosion-resistant annular packing 11 is provided on the lower surface of the annular collar, and a locking part 14 for tightening the inner container is provided on the outer wall of the bottom of the inner container.

The liquid level display device B includes a liquid level display tube 12 installed between the inner container and the outer case to display the liquid level in the inner container, one end of which is inserted into the liquid level display tube, and the other end of which is inserted into the inner container. Hollow joints 15, 15, 15' communicating with the through hole 9 are provided.

The liquid level display tube 12 is formed in a vertically elongated transparent pipe made of glass, acrylic resin, etc., and as shown in FIG. A temperature indicating material 13 is stretched.

The temperature indicating material 13 is a reversible temperature indicating material for inks and paints such as thermolabels and thermopaints that exhibit different colors at different predetermined temperatures such as 50.degree. C., 80.degree. C., and 95.degree. C. or higher.

The joints 15, 15, 15' are formed into vertically sectioned hollow bodies made of a heat-resistant and corrosion-resistant material such as silicone rubber.

The exterior case 1 has a bottom body 4 attached to its lower end, a draining member 5 attached to its upper end, and a plug (not shown) fixed to its rear lower end, which corresponds to the liquid level display tube 12 of the liquid level display device B. A vertically long through hole is bored in the front side of the exterior case, and a frame 20 that covers the vertically long hole is fixed to the front surface of the vertically long through hole.

This frame body 20 is provided with a vertically long transparent window through which the vertically long liquid level display tube can be seen through the vertically long transparent hole of the exterior case 1.
Inside the lower end thereof, lamps 22 and 23 for keeping the water boiler warm are provided, and a transparent glass or resin plate is fitted into the see-through window.

The drainage member 5 attached to the upper end of the outer case has an open center, fixes the annular flange 10 of the inner container to its circumferential surface, has an annular rib on which the inner stopper 6 can be detachably attached, and has an annular rib on the front surface for discharging the inner stopper. A beak part 26 is provided for installing the tube 25, and a hinge part 31 is attached to the rear end outer wall to allow the lid to be opened and closed.

27 is a lid locking device 29 provided on both sides of the beak portion 26
This is a locking pawl that locks the zero lock pawl 30.

The inner stopper 6, which is detachably attached to the opening of the inner container, is the inner stopper main body 1.
6, an inner lid 17 fixed to the outer periphery of the inner stopper body to close the opening of the inner container, a water pump 19 whose lower end hangs down inside the inner container and whose upper end communicates with the liquid communication part 18 of the inner stopper main body, and a draining member whose tip end is a draining member. The discharge pipe 25 protrudes from the beak 26 to the front of the outer case and has a rear end communicating with the water pump 19 via the liquid communication part of the inner stopper main body.

A lid body 8 attached to the upper end of the draining member 5 so as to be openable and closable includes a bellows pump 7 with openings at the center of the upper and lower ends, and a lower plate 3 to which the center of the lower end of the bellows pump is attached via a gasket 35.
6 and a hinge device 31 for opening and closing the lid fixed to the rear end of the draining member.
, a locking device 29 of the lid body equipped with a locking claw 30 that engages with a latching claw of a draining member, a top plate 37, a bushing valve 38 that is latched to an opening at the center of the upper end of the bellows pump, and a bushing valve that is pushed from inside the bellows pump. The spring 39 that is being raised and the pusher body 40, which is freely movable up and down in the center opening of the upper plate and comes into contact with the upper end of the bushing valve to supply the air in the bellows pump into the inner container through the inner plug, and the pusher body 40 that moves up and down in the center opening of the upper plate. It is equipped with a stopper device 41 that stops the movement freely.

A heat source 3 that heats the liquid in the inner container is fixed to the outer periphery of the lower end of the inner container, and power is supplied by a thermostat C□ that senses the amount of liquid in the inner container and a temperature controller C of a thermal reed switch C2. controlled.

This heat source 3 lights up the water boiling lamp 22 when boiling water,
The heat retention lamp 23 is lit during heat retention.

A plug (not shown) is connected via lead wires to the above-mentioned lamps 22, 23, temperature fuse 42, thermal reed switch C2, thermostat C1, and heat source 3.

As described above, in the present invention, the transparent pipe forming the liquid level display tube is connected to the inner container via a joint, and temperature indicating materials are stretched on the rear outer wall of the transparent pipe at appropriate intervals in the vertical direction. Therefore, the transparent pipe can be attached to and detached from the inner container as desired.

The liquid level display tube is usually formed integrally with the inner container,
Due to the narrow distance between the two, it was difficult to attach the temperature indicator to the rear outer wall of the liquid volume indicator tube. However, with the above configuration, the transparent pipe can be separated from the inner container, making it possible to attach the temperature indicator to the rear outer wall of the liquid volume indicator tube. It can be easily installed on the rear outer wall of a transparent pipe.

Furthermore, since the temperature indicating material is stretched on the rear outer wall of the transparent pipe, when the flow rate display is viewed through the see-through window, the temperature indicating material is visually observed through the water in the transparent pipe, so there is no information inside the inner container. It is possible to clearly confirm not only the amount of liquid but also the color displayed by the temperature indicating material.

In electric kettles, when the water in the inner container becomes low, fresh water is replenished, and the temperature of the liquid in the inner container temporarily decreases, but in such cases, the degree of coloration of the temperature indicator material may Since this is different from when the temperature is high, the temperature of the liquid can be clearly seen through, and the amount of liquid can also be reliably confirmed, which is extremely convenient.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the invention, and FIG. 2 is a perspective view showing the main parts of the invention. 1...Outer case, 2...Inner container, 9
...Through hole, 12...Liquid level display tube, 1
3...Temperature indicator, 15.15'...Joint, B...Liquid level display device.

Claims (1)

[Scope of utility model registration request] Through-holes are formed at the top and bottom of the inner container surrounded by the outer case, and both ends of a vertically long transparent pipe provided between the outer case and the inner container are connected to the through-holes. In the liquid level display device for an electric kettle, a vertically long see-through window is provided in the outer case facing the inner container so that the liquid level in the inner container can be seen through the see-through window, and the transparent pipe is connected through a joint. and connected to the inner container, and temperature indicating materials that develop a predetermined color at a predetermined temperature are stretched on the rear outer wall of the transparent pipe at appropriate intervals in the vertical direction. Pot liquid level indicator.