JPS5830019Y2 - Container for heating and keeping warm - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating and insulating container that heats and keeps a liquid warm using a heating element connected to an external power source.The main purpose of the invention is to efficiently heat the contained liquid. Another object of the present invention is to provide a heating and heat-retaining container from which a required amount of high-temperature liquid can be easily taken out when necessary.

Another object of the present invention is to enable liquid injection operations, maintenance and inspection, etc. to be easily and safely performed in the heating and heat-insulating container.

Another purpose of the present invention is to prevent troubles in the electrical system from occurring due to deterioration of the sealing part that prevents liquid and vapor from entering the power terminal side due to conduction heat of the heating element in the heating and insulation container. The purpose is to do so.

Other objects and effects of the present invention will become clear through the above embodiments.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Figure 1.2.3 shows a heating and heat-insulating container according to the present invention, where 1 indicates a metal (aluminum, stainless steel, etc.) inner container;
Reference numeral 2 denotes an outer case, and 3 a bottom cover made of synthetic resin having partial screws 3a that are screwed into curling portions 2a formed at appropriate intervals in the circumferential direction on the lower edge of the outer case 2.

4 is a shoulder made of synthetic resin that has an opening 4a facing the mouth of the inner container 1 in the center and a raised part 4b for draining on the upper surface around the opening 4a, and is force-fitted into the upper end opening of the outer case 2. Moreover, it engages with the curling portion 2b on the upper edge of the outer case 2 to prevent it from coming off.

In the drawing, an inner container 1 and an outer case 2. Between the bottom cover 3,
Although the heat insulating material 5 is interposed, the heat insulating material 5 may be omitted.

6 is an upper lid attached to the upper part of the shoulder part 4 so as to be openable and closable;
A pump device (not shown) is built-in.

Reference numeral 7 denotes a mouth rubber fitted to the mouth of the inner container 1.

A suction pipe 8 and a heating element A connectable to an external power source are inserted inside the inner container 1, and the suction pipe 8 is connected to the shoulder portion 4.
It is connected to a discharge pipe 9 protruding from the side surface of the container via a pendulum valve 10 for preventing water leakage in the event of a fall.

As shown in FIGS. 1 and 3, the heating element A is composed of a pipe section 13a containing a nichrome wire heater 11 as a heat source and a thermostat 12, and a pipe section 13b containing a lead wire 14. .

The thermostat 12 directly senses the temperature of the liquid in the inner container 1, energizes the heater 11 until the liquid reaches a predetermined temperature, blocks the energization when the temperature reaches the predetermined temperature, and repeats energization 9 and blocking of the energization to the heater. There is.

15 is a bobbin made of an electrically insulating material such as an insulator, 16 is a bobbin support plate made of a similar material, 17a is a heat-resistant member made of epoxy resin, etc., 18 is a glass tube,
19 is a heat-resistant waterproof packing made of silicone rubber or the like.

The pipe portion 13b with a built-in lead wire is disposed around the opening of the container 1 so as not to get in the way when liquid is injected into the inner container 1, and the pipe portion 13a with a built-in heat source is arranged at the periphery of the mouth of the container 1 so as not to get in the way when liquid is injected into the inner container 1. To ensure that convection is uniform, and to prevent contact with the periphery of the opening of the inner container 1 when removing the bottom cover 3 and removing the inner container 1 from the outer case 2 for repair,
It is located near the center of the bottom of the inner container 1.

Further, the upper end of the lead wire built-in pipe portion 13b is bent outward, and this bent portion 13b' is connected to the inner container 1.
A cylindrical heat-resistant and waterproof gasket 2 made of silicone rubber or the like is supported on the upper part of the body by being sandwiched between a mouth rubber 7 and a shoulder portion 4.
0 is inserted and supported.

This gasket 20 is provided to prevent liquid or steam from entering between the inner container 1 and the outer case 2 through the lead wire built-in pipe portion 13b.
Because it is made of heat-resistant material such as silicone rubber, the material does not deteriorate due to heat conduction from the pipe portion 13b with built-in lead wires, and the sealing effect is reliably maintained over a long period of time. System and troubles are prevented from occurring.

21 is a connection terminal 22. It includes a pair of power terminals 24 connected to the lead wire 14 via a nut 23 etc., a lamp cover 26 in the shape of a convex lens that covers the front surface of a neon lamp 25 that lights up only when the heating element A is energized, an iron plate 27, etc. The cover 21, the exterior case 2, and the bottom cover 3 are colinear with one screw 28.

That is, as shown in the figure, a rectangular through hole 29 is formed near the lower end of the exterior case 2, and a retaining piece that can be inserted into the upper edge of the through hole 29 is provided at the upper edge of the cover 21. 21 a, fit the cover 21 into the through hole 29 from the lower front, and engage the retaining piece 21 a with the upper edge of the through hole 29 (which is a part of the exterior case 2). In this state, one screw 28 is screwed across the lower edge of the cover 21, the lower edge of the through hole 29 (which is a part of the exterior cover 2), and the bottom cover 3.

In this embodiment, the front iron plate 27 of the power terminal cover 21 is provided, while the iron plate 27 is provided on the power cord 30 side.
A magnet is provided to attract the power cord 30 and its attraction force is used to connect the power cord 30 to the power terminal 24 and maintain the connected state. However, a normal power terminal cover without the iron plate 27 is used. You may.

According to the above configuration, the heating element A is inserted into the inner container 1 and directly heats the liquid contained in the inner container 1.
Efficient heating with low power consumption, hot water, tea,
By storing a high-temperature liquid such as coffee in the inner container 1, it can be maintained at a constant high temperature for a long time.

Furthermore, depending on the setting of the amount of heat of the heating element A, it is possible to heat the cold water to a high temperature state within the inner container 1, so that the inner container 1 has both a water boiling function and a heating heat retention function.

When taking out the stored liquid, the pump device built into the upper lid 6 is activated to increase the air pressure inside the inner container 1, so that the stored liquid is pumped into the suction pump 8. Since it is pumped out through the discharge pipe 9, the required amount of liquid can be easily taken out when needed without having to lift and tilt the heating and heat-insulating container.

In addition, since the lead wire built-in pipe portion 13b is located at the periphery of the mouth of the inner container 1, that is, it is biased toward the end of the mouth, when injecting liquid into the inner container 1, the lead wire built-in pipe Since the portion 13b does not get in the way and there is no need to pull out the heating element A upward each time it is injected, injection is easy, and there is no risk of getting burned by touching the heating element A with your fingers. The pipe with a built-in lead wire fixed to the periphery of the mouth part is not in constant contact with the liquid in the inner container, so
It is highly safe as it reliably prevents corrosion, rust, etc. around the mouth portion due to heated high temperature liquid.

However, since the pipe section 13a with a built-in heat source is located near the center of the bottom of the inner container 1, convection of the contained liquid occurs uniformly around the inside of the pipe section 13a, and the entire liquid can be heated evenly. When the inner container 1 is removed from the outer case 2 during repair, there is no risk that the pipe portion 13a will hit the peripheral edge of the mouth of the inner container 1 and be damaged, which is convenient for maintenance and inspection.

Furthermore, in the present invention, as shown in FIG. 1, the lower end of the heating element A is positioned below the lower end of the suction pipe 8.

Therefore, the lower end of the heating element A is always submerged in residual water that cannot be pumped out by the pump device, so that dry boiling can be prevented.

In other words, if the lower end of the heating element is located above the lower end of the suction pump, the pump device operates to pump out the liquid in the inner container, and only the remaining water that cannot be pumped out by this pump device is placed in the inner container. In some cases, the water level of the remaining water is below the lower end of the suction pipe, and the lower end of the heating element is necessarily located above the water level of the remaining water.

Therefore, in this case, if the heat source is activated without checking the liquid level in the inner container, there is a risk that the inner container will be emptied and the various components will be damaged, which is not preferable from the viewpoint of safety.

According to the above configuration, such drawbacks can be eliminated.

Next, FIG. 4 shows another embodiment of the present invention, in which a semiconductor 11' such as a positive temperature coefficient thermistor is used as a heat source.
This embodiment differs from the previous embodiment in that it uses the same reference numerals as the previous embodiment, and the other configurations and functions are the same as in the previous embodiment.

Further, in each of the above-mentioned embodiments, the inner container 1 is made of metal, but it may be made of any suitable material such as glass (either a vacuum double bottle or a double-layer bottle), ceramic, or the like.

Heat source built-in pipe part 13a, lead wire built-in pipe part 1
The same applies to 3b etc.

The present invention has the above-mentioned configuration, and since the liquid contained in the container is heated by a heating element inserted inside the inner container, it can be heated efficiently with low power consumption, and can be kept in a high temperature state for a long time. To remove the stored liquid, it is only necessary to operate the pump device provided on the top lid, and it is possible to pump out the required amount of liquid when necessary.

Furthermore, since the thermostat is disposed at the lower end of the heating element, the low temperature liquid in the inner container is sensed, so that high temperature liquid can be maintained at all times.

In addition, as shown in the above embodiment, the power supply terminal cover is attached to the through hole formed near the lower end of the outer case, and the retaining piece formed on the upper edge of the cover engages with the upper edge of the through hole. the lower edge of the cover, the lower edge of the through hole (i.e.
If the three parts (exterior case) and bottom cover with partial screws that screw into the exterior case are aligned with one screw, the number of parts for connecting and fixing these three parts can be reduced, and the structure can be improved. In addition, assembly costs can be reduced by simplifying the work.

[Brief explanation of drawings]

The drawings illustrate embodiments of the heating and heat-insulating container according to the present invention, in which FIG. 1 is a vertical side view, FIG. 2 is a front view of the main part, FIG. 3 is a vertical side view of the main part of the heating element, and FIG. The figure is a longitudinal sectional side view showing another embodiment. A... Heating element, 1... Inner container, 2...
... Exterior case, 3 ... Bottom cover, 6 ...
...Top lid, 8...Suction pipe, 21...
・Power terminal, 21a...Engagement piece, 28...
...screw, 29...through hole.

Claims (1)

[Scope of utility model registration request] An inner container surrounded by an outer case, a heating element that heats and keeps the liquid contained in the inner container warm, a suction pipe that hangs down inside the inner container, and a pump that pumps the contained solution to the outside through the suction pipe. In a heating and heat-insulating container equipped with a top lid having a device, the heating element is composed of a pipe portion containing a heat source and a pipe portion containing a lead wire, and the upper end of the pipe portion containing the lead wire is bent outward. , insert this bent part into the heat-resistant and waterproof packing supported around the mouth of the inner container,
1. A heating and heat-insulating container, characterized in that a pipe section with a built-in heat source is vertically disposed near the center of the bottom of the inner container, and a thermostat is disposed at the tip of this pipe section.