JPS5839150Y2 - Circulating water boiler - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a circulating type hot water bottle.

As a conventional kettle boiler, one has been proposed in which a heater is suspended inside a medium bottle made of a vacuum-made double bottle, and the water in the medium bottle is heated by the heater.

With this type, the upper end of the heater must be attached to the stopper, which is not only structurally unreasonable but also cumbersome to handle, making it impractical and causing various difficulties in adjusting the water temperature when keeping warm. The problem was that there were many points.

The present invention was devised in view of the above-mentioned problems, and an object of the present invention is to provide a circulation-type water boiler that has a reasonable structure, is easy to handle, and can reliably adjust the water temperature when keeping warm. With the goal.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings, which are examples of the present invention.

Fig. 1 shows a circulating water boiler according to the present invention, in which 1 is a body body, 2 is a side body fixed to the upper part of the body body 1, and 3 is a bottom body fixed to the lower part of the body body 1-. , 4 is a plug that is screwed into the side body 2.

A middle bottle 5 made of a vacuum-made double bottle is housed inside the trunk body 1, and the opening of the middle bottle 5 is fixed to the lower end of the side body 2 via a backing 18.

Communication pipes 6 and 7 communicating between the inside and outside of the medium bottle 5 are integrally attached to the upper and lower parts of the medium bottle 5, and a tip tube 8 is provided on the bottom surface.

In addition, 9 is asbestos to maintain a constant distance between the outer bottle 10 and the inner bottle 11 of the inner bottle 5, and the inner surface of the outer bottle 10 and the outer surface of the inner bottle 11 are plated with silver. ing.

The upper end of a connecting pipe 19 having a check valve 20 is attached to the lower communicating pipe 7 of the medium bottle 5, and one end of a metal water pipe 21 is connected to the lower end of this connecting pipe 19. .

The water pipe 21 is fixed in a curved state to the upper surface of the hot plate 22 provided with the heater 23.
A temperature control thermostat 24 is installed nearby (near the inlet).

In order to prevent this temperature control thermostat 24 from being affected by the heat from the hot plate 22 as much as possible, for example, the thermostat 24 may be installed at a position away from the hot plate 22, or a heat shield plate may be installed between the thermostat 24 and the hot plate 22. (not shown) may be provided.

In addition, 25 is a temperature fuse provided on the bottom surface of the hot plate 22, and 26 is a manual reset type thermostat for preventing excessive temperature rise. It can be reset by pushing up a movable reset button 27.

The thermostat 26 serves as a safety device to prevent the heater 23 from running dry when the medium bottle 5 is empty.

The other end of the water pipe 21, the pumping part 21a, is arranged vertically,
The tip thereof is connected to the upper communication pipe 6 of the medium bottle 5 by a connecting pipe 28.

In addition, 29 is a bundle, 30 is an energization indicator light, and 31 is an empty cooking warning light.

FIG. 2 is a circuit diagram of the circulating water boiler constructed as described above.

Here, the manufacturing method of the medium bottle 5 will be explained according to FIGS. 3A to 3J. An inner bottle 11 is shaped as shown in FIG. 3A, and holes 12.1 are formed in the upper and lower parts of the inner bottle 11.
3 (FIG. 3B), and glass communicating tubes 6, 7 are welded to these holes 12 and 13 (FIG. 3C).

Next, the outer bottle 10 is formed as shown in Fig. 3D, and three holes 14, 15° 16 are provided in the upper and lower parts of the outer bottle 10 (Fig. 3E), and a tip tube 8 is inserted into the hole 16 of these holes. (Fig. 3F), and then cut the outer bottle 10 vertically (Fig. 3G).

Then, the outer bottle 10 is matched from above and below with the inner bottle 11 in between, and an appropriate number of asbestos 9 is interposed between the inner bottle 11 and the outer bottle 10, and the matching part of the outer bottle 10 is covered with tape 17. Temporarily fasten (Figure 3H).

Furthermore, the openings of the inner bottle 11 and the outer bottle 10, the protruding part of the communication tube 6.7, and the mating part of the outer bottle 10 are welded (Fig. 3I), and the plating solution is poured into the tip tube 8 to plate the parts. At the same time, the air between the inner bottle 11 and the outer bottle 10 is removed from the tip tube 8 to create a vacuum, and then the tip tube 8 is sealed to complete the production of the middle bottle 5 (Figure 3J). .

Next, the operation of the circulating water boiler according to the present invention will be explained.

First, fill the medium bottle 5 with water, close the stopper, and insert the plug 32 (see Figure 2) into a power outlet.The energization indicator light 30 lights up and current flows through the heater 23, heating the hot plate 22. be done.

The water flowing into the water pipe 21 through the check valve 20 is heated by the hot plate 22, and its steam pressure causes the water to flow into the water pumping section 21 of the water pipe 21.
a and flows into the medium bottle 5, and the water in the medium bottle 5 becomes hotter from above while repeating circulation.

FIG. 4 shows how the water temperature in the medium bottle 5 and the temperature of the temperature control thermostat 24 change in this state.

That is, the water temperature T1 at the top of the medium bottle 5 rises over time, but the water temperature T2 at the bottom hardly rises until midway through, and suddenly rises from a certain point A, and as a result, the temperature control thermostat 24 changes the temperature at the bottom of the medium bottle 5. Under the influence of the lower water temperature and the temperature of the hot plate 22, the temperature rises as shown by the broken line in FIG.

If the temperature at which the temperature control thermostat 24 turns off is set above point B where the upper and lower water temperatures of the medium bottle 5 are equal, when the temperature of the hot water in the medium bottle 5 becomes uniform. This thermostat 24 can be turned off.

By turning off the thermostat 24, the power supply to the heater 23 is stopped, and the circulation is also stopped.

In addition, when the hot water near the temperature control thermostat 24 is naturally cooled down to a predetermined temperature or lower, the thermostat 24 is turned off again.
4 is turned on, the heater 23 is energized and hot water starts circulating.

However, since the hot water in the medium bottle 5 has a lower temperature drop than the hot water near the thermostat 24 and is sufficiently hot, just by energizing the heater 23 for a short time, the hot water in the medium bottle 5 flows out into the vicinity of the thermostat 24, and the thermostat 24 is turned off. It becomes OFF.

For example, if the medium bottle is a stainless steel single-walled container and water pipes equipped with heaters similar to those above are connected to the top and bottom of this container, the hot water in the container will have approximately the same temperature as the hot water near the temperature control thermostat. This indicates a drop in the temperature of the hot water in the container, so unless you use a sensitive thermostat, you cannot accurately sense the drop in temperature of the hot water in the container.

On the other hand, in the present invention, since the middle bottle 5 is made of a vacuum-made double bottle, the hot water in the middle bottle 5 is higher in temperature than the hot water near the inlet of the water pipe 21, and the temperature decreases less.
Even if the sensitivity is not very sensitive, it can detect large temperature changes near the inlet of the water pipe 21 and periodically turn on and off.
Hot water is supplied to the medium bottle 5 one after another.

Therefore, the hot water in the medium bottle 5 is always kept at a high temperature, making it possible to create a magic cup with good heat retention performance.

When pouring out the hot water in the medium bottle 5, the stopper may be rotated by an appropriate angle to open it, and the bottle may be tilted by holding the bundle.

It should be noted that the circulating water boiler according to the present invention is not limited to the one in which hot water is poured by holding a bundle as described above, but may of course be a so-called air bottle in which hot water is poured by an air pump.

In addition, when the stopper 4 is removed and water is replenished into the medium bottle 5 during heat retention, the temperature of the hot water in the medium bottle 5 has decreased, so the thermostat 24 is turned on and the heater 23 is turned on. The electricity is turned on until the water boils.

As is clear from the above explanation, according to the present invention, the medium bottle is a vacuum-made double bottle, and both ends of a wood pipe with a heater are connected to the top and bottom of the medium bottle to circulate water and boil water. As a result, there is no need to provide a heater inside the medium bottle, and therefore, it is possible to obtain a kettle boiling bottle that is structurally reasonable and easy to handle when pouring hot water or supplying water.

Furthermore, since a temperature control thermostat is attached to the suction side end of the wood pipe, this thermostat senses large changes in the water temperature and energizes the heater to periodically supply hot water into the medium bottle.

Therefore, the hot water in the medium bottle is always kept at a high temperature, making it possible to reliably adjust the water temperature, and the thermostat does not necessarily have to be sensitive.
It's cheap.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of a circulating water boiler according to the present invention, Fig. 2 is a circuit diagram, Figs. 3A to 3J are explanatory diagrams showing the manufacturing process of a medium bottle, and Fig. 4 is a medium bottle. It is a figure showing the relationship between the water temperature inside and the temperature of the thermostat. 1...Torso body, 2...Shoulder body, 3...
... Bottom body, 4 ... Plug body, 5 ...
Medium bottle, 6, 7...Communication pipe, 8...Tip pipe, 19...Connecting pipe, 20...Check valve, 21... ... Water pipe, 22 ... Heat plate, 2
3... Heater, 24... Temperature control thermostat, 26... Temperature overrise prevention thermostat, 28... Connecting pipe.

Claims (1)

[Scope of utility model registration request] A communication pipe is provided at the top and bottom of the medium bottle, which is a double vacuum bottle, to communicate the inside of the medium bottle with the outside, and one end of the water pipe is connected to the bottom communication pipe via a check valve. A circulating water boiler characterized in that a thermostat for temperature control is provided near the inlet of the water pipe, a heater is provided approximately in the center of the wood pipe, and the other end of the water pipe is vertically erected and connected to the upper communication pipe of the medium bottle. Magic bottle.