JP3129296B2 - Electric hot water storage container - 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 hot water storage container, and more particularly, to an electric hot water storage container provided with an inner container having a vacuum double structure.

[0002]

2. Description of the Related Art A well-known electric hot water storage container includes a container body provided with an inner container for storing hot water, a lid for opening and closing the container body, and a heating means for heating the inner container. Some of the electric hot water storage containers include an electric heater for discharging hot water in the inner container, a pouring passage for discharging hot water in the inner container, and a pump device for feeding hot water through the pouring passage. In this case, the inner container for storing hot water is a bottomed cylindrical metal container (for example, a stainless steel container), and at the time of keeping the temperature, the hot water in the inner container is maintained at a predetermined temperature by controlling the power supply to the electric heater. I was

[0003]

In the case of the electric hot water storage container having the above structure, the inner container does not have a heat retaining function. Therefore, as described above, it is essential that the electric heater be used to keep the temperature.

[0004] In recent years, with increasing interest in global warming, various household electric appliances have been required to save energy, and electric hot water storage containers have also been required to have improved heat insulation performance.

[0005] Therefore, the development of an electric hot water storage container using a vacuum double-structured inner container excellent in heat retention performance has been promoted. When the inner container has a vacuum double-structured structure, it is housed in the inner container. It is necessary to devise the arrangement of the means for heating the water (for example, an electric heater).

For example, if an attempt is made to adopt a structure in which an electric heater is provided on the outer bottom of an inner container as in the above-described conventional electric hot water storage container, a non-vacuum section made of a single plate is provided on the bottom of the inner container. And an electric heater must be arranged in contact with the lower surface of the non-vacuum part. In the case of such an arrangement structure of the electric heater, a non-vacuum portion exists at the bottom of the inner container, so that heat escapes from the bottom of the inner container, resulting in insufficient heat retention performance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a structure in which water contained in an inner container is heated by a heating means provided on a side of a lid, so that the heat retaining performance of the inner container is improved. It is intended to improve.

[0008]

According to the first aspect of the present invention, as a means for solving the above-mentioned problems, a container body having an inner container having a vacuum double structure, a lid of the container body, In an electric hot water storage container provided with a pouring passage for pouring out hot water in a vessel to the outside and a pump device for feeding hot water through the pouring passage, the electric water storage container has a lower surface on the lid , and a drooping device in the inner container.
A supporting member consisting of a hollow pipe to be provided
The tip of the member, the inner container heating means for heating the contained water provided within Rutotomoni, the pouring on the support in member
Pumped provided in the contents within the vessel so as to constitute a part of the passage
A riser is provided for unitization .

[0009] With the above structure, the water contained in the inner container is supplied to the hollow pipe hanging from the lid.
Heating by the heating means provided at the tip of the supporting member
(That is, the heating means is buried in water)
The heating of the water is performed in a state) . Accordingly, the inner container can have a complete vacuum double structure, so that the heat retention performance can be significantly improved and the heat generated by the heating means can be improved.
Is used as energy to heat the water
Energy efficiency is improved. Also, the contents
When cold water is stored in a container and used as a cold storage container
Even if there is, it is assumed that the heating means is buried in the water
Because of the structure, as in the conventional heating means
It is no longer possible to cause insulation failure due to condensation etc.
You. In addition, to form a part of the pouring passage in the support member
Arrange the pumping pipe provided in the inner container to make it a unit
And a supporting member for supporting the heating means
It is possible to handle the lift pipe integrally.
As a result, the number of assembly steps can be reduced.

[0010] As in the invention of claim 2, claim 1
The electric hot water container according to claim , wherein the inner container is provided with a first electrode.
On the other hand, the support member is made of a conductor, and
Then, the amount of water in the inner container is detected by a capacitance method.
In this case, use the support member to detect the amount of water.
Can be.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 3 show an electric hot water storage container according to a first embodiment of the present invention.

As shown in FIG. 1, this electric hot water storage container
A container body 1 having an inner container 3 for storing hot water, and the container body 1
, A heating means 4 for heating the inner container 3, and a pouring passage 5 for discharging hot water in the inner container 3 to the outside.
And a pump device 6 for sending hot water through the pouring passage 5.

The container main body 1 includes an outer case 7 made of a synthetic resin having a cylindrical shape with a bottom and constituting an outer peripheral surface, the inner container 3 constituting an inner peripheral surface, and the outer case 7 and the inner container 3. And an annular shoulder member 8 to be connected.

The inner container 3 has a bottomed cylindrical inner cylinder 11 made of metal (for example, stainless steel) and a bottomed cylindrical metal (for example, stainless steel) located outside the inner cylinder 11. A vacuum space 10 is formed between the inner cylinder 11 and the outer cylinder 12 and extends continuously from the side circumference to the bottom.

A flange 9 formed on the upper edge of the inner container 3 is suspended via a seal packing 14 from an inward flange 13 integrally formed on the shoulder member 8. , Mounting bracket 1 fixed to the bottom of inner container 3
5 and 15 are screwed to the bottom 4a of the outer case 4.
6 and 16, the inner container 3 and the outer case 4
And the shoulder member 8 are integrally connected.

The lid 2 is composed of a synthetic resin upper plate 17 and a synthetic resin lower plate 18 whose outer peripheral edge is joined to the upper plate 17 by welding. The upper end opening (specifically, the shoulder member 8) is detachable. A seal packing 20 for sealing the upper end opening (that is, the water supply port 19) of the inner container 3 when the lid 2 is attached is attached to the lid lower plate 18. A space 21 for housing the pump device 6 and a control board 32 to be described later is formed inside the lid 2.

The heating means 4 is attached to the tip of a support member 22 consisting of a hollow pipe hanging down from the lower surface of the lid 2, and the outer peripheral edges are caulked to each other as shown in FIG. Case 2 consisting of a pair of thermal conductors
The heating element 26 is built in a sealed container 23 made of 4, 25. That is, the heating means 4 has a structure in which water does not enter the sealed container 23 even when immersed in water. The heating element 26 is, as described later,
It comprises a heating element 26A for boiling and a heating element 26B for keeping heat (see FIG. 3).

The pouring passage 5 is connected to a pumping pipe 5a suspended from the lower surface of the lid 2 and an upper end of the pumping pipe 5a, and is a portion defined by the space 21 in the lid 2 In the present embodiment, the pumping pipe 5a faces out to the outside.
The support member 2 is pierced through the closed container 23.
2 and are unitized. In this way, the support member 22 for supporting the heating means 4 and the pumping pipe 5a can be handled integrally, and the number of assembling steps can be reduced.

In the vicinity of the heating means 4 in the support member 22, there is provided a temperature sensor 27 acting as a temperature detecting means for detecting the temperature of the water contained in the inner container 3. In this way, the temperature sensor 27 can detect an abnormal state of the heating means 4 (for example, an empty heating state).

In the support member 22, lead wires 28 and 29 connected to the heating elements 26A and 26B of the heating means 4 and the temperature sensor 27 are provided. A sealing member 30 for vertically partitioning the space in the support member 22 up and down.
Is provided. As the sealing member 30, it is desirable to use silicon rubber or fluorine rubber. This facilitates the wiring of the lead wires 28 and 29 and eliminates the possibility that the lead wires 28 and 29 come into contact with water. Further, the temperature sensor 27 is not affected by the space above the temperature sensor 27 in the support member 22, and the detection accuracy of the temperature sensor 27 is improved. Reference numeral 31 denotes a insulator for positioning and insulating the lead wire 28.

The pump device 6 supplies pressurized air to the inner container 3.
It is an electric air pump that feeds pressure into the inside, and is disposed in the space 21 in the lid 2. Reference numeral 33 denotes a pneumatic feed pipe for feeding pressurized air from the electric air pump 6 into the inner container 3. In this electric hot water storage container, when the internal pressure in the inner container 3 rises due to pressurized air fed from the electric air pump 6, the hot water or water in the inner container 3 is discharged to the outside via the discharge passage 5. It is to be done.

Electrical components such as a control board 32 for controlling the energization of the heating element 26 of the heating means 4 and the like are also provided in the space 21 in the lid 2. By doing so, it is possible to perform the electrical wiring concentrated on the lid 2 side, and the structure is simplified. Note that the space 21 is not affected by the steam generated in the inner container 3.
It is separated from a steam discharge passage (not shown).

Further, on the front surface of the lid 2, an operation provided with a liquid crystal display device for controlling the energization of the heating elements 26A and 26B in the heating means 4, the start / stop of the electric air pump 6, and various displays. A display unit 34 is provided.

The electric elements in this electric hot water storage container are as follows:
They are connected as shown in FIG.

In FIG. 3, reference numeral 35 denotes a microcomputer unit acting as a control means for controlling the power supply to the heating means 4 and the pump device 6, 36 AC power supply, and 37 a cover for detecting the open state of the cover 2. Sensors, 3
Reference numeral 8 denotes a water amount display section for displaying the amount of water in the inner container 3;
9 is a water heater switch, 40 is a relay contact which is opened when the lid sensor 37 detects the opening of the lid 2, 4
Reference numeral 1 denotes a triac for controlling ON / OFF of the heating element 26B, and reference numeral 42 denotes a thermal fuse.

In the present embodiment, the inner container 3
(For example, the inner cylinder 11 or the outer cylinder 12) is used as a first electrode, the support member 22 is made of a conductor and used as a second electrode, and the amount of water in the inner container 3 can be detected by a capacitance method. The detected water amount is indicated by the water amount display section 38.
Is to be displayed. Note that the water amount display section 38
Is provided at an appropriate position of the outer case 4.

With the above configuration, in this electric hot water storage container, the water contained in the inner container 3 is heated by the heating means 4 provided at the tip of the support member 22 suspended from the lid 2. The inner container 3 can have a complete vacuum double structure. Therefore, the heat retention performance is significantly improved. Further, since the water is heated while the heating means 4 is immersed in the water, the entire amount of heat generated from the heating means 4 is used as energy for heating the water, and energy efficiency is reduced. improves. Furthermore, even when cold water or the like is stored in the inner container 3 and used as a cold storage container, the structure is based on the premise that the heating means 4 is immersed in water. It will not happen.

It is to be noted that the prevention of the empty heating of the heating means 4 is performed by stopping the power supply to the heating means 4 when the temperature detected by the temperature sensor 27 rises abnormally.

In this embodiment, an electric air pump is used as the pump device 6, but a manual air pump (for example, a bellows air pump) may be used.

In this embodiment, a manual air pump (for example, a bellows type air pump) is employed as the pump device 6, but an electric air pump may be employed.

[0032]

According to the first aspect of the present invention, there is provided a container body provided with an inner container having a vacuum double structure, a cover body of the container body, and a container for discharging hot water in the inner container to the outside. In an electric hot water storage container provided with a pouring passage and a pump device for feeding hot water through the pouring passage, the inner surface of the inner container is provided on the lower surface of the lid.
A support member consisting of a suspended hollow pipe is suspended and
The tip of the support member, Rutotomoni provided with a heating means for heating the water contained within the inner container, the said support in member
Provided in the inner container to constitute a part of the pouring passage
A pumping pipe is provided to make a unit, and the water contained in the inner container is supported by a hollow pipe hanging from the lid.
Since to be heated by a heating means provided at the distal end of the support member, it becomes possible to heat insulating property making it possible to the inner container and complete vacuum double structure is remarkably improved,
When used as a heat insulation container, there is an effect that power consumption can be saved, and when used as a cold insulation container, it is possible to keep cold for a long time.

In the state where the heating means is immersed in the water,
Heating is performed, so that
Heat is used as energy to heat water
And improve energy efficiency.
There is fruit.

Also, cold water or the like is stored in the inner container to keep the container cool.
Even when used as a container, the heating
Because it is a structure that assumes that you will submerge,
No insulation failure due to condensation etc. as in heating means
There is also an effect that it does not disappear.

In addition, a part of the pouring passage is formed in the supporting member.
A pumping tube installed inside the inner container to
Since it is knitted, support for supporting heating means
The member and the pumping pipe can be handled integrally.
And the effect that the number of assembly steps can be reduced
There is also.

As in the invention of claim 2, claim 1
The electric hot water container according to claim , wherein the inner container is provided with a first electrode.
On the other hand, the support member is made of a conductor, and
Then , the amount of water in the inner container is detected by a capacitance method.
In this case, use the support member to detect the amount of water.
Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an electric hot water storage container according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a heating unit in the electric hot water storage container according to the first embodiment of the present invention.

FIG. 3 is a connection diagram of electric elements in the electric hot water storage container according to the first embodiment of the present invention.

[Explanation of symbols]

1 is a container body, 2 is a lid, 3 is an inner container, 4 is a heating means,
5 is an injection passage, 5a is a pumping pipe, 6 is a pump device, 1
0 is a vacuum space, 11 is an inner cylinder, 12 is an outer cylinder, 22 is a support member, 27 is a temperature detecting means (temperature sensor), 28, 29
Is a lead wire, 30 is a sealing member, 32 is a control board, 35
Is a control means (microcomputer unit), and 37 is a lid sensor.

Claims (2)

(57) [Claims] 1. A container body provided with an inner container having a vacuum double structure, a lid of the container body, an outlet passage for discharging hot water in the inner container to the outside, and the outlet passage. An electric hot water storage container provided with a pump device for sending out hot water through the inner surface of the inner container.
The tip of Ranaru the support member vertically and the support member, Ru provided with a heating means for heating the water contained within the inner container
And a part of the pouring passage in the supporting member.
In order to arrange the pumping pipe provided in the inner container
An electric hot water storage container characterized by being unitized . 2. The method according to claim 1, wherein the inner container is a first electrode,
The supporting member is made of a conductor and serves as a second electrode,
2. The electric hot water storage container according to claim 1, wherein the amount of water in the container is detected by a capacitance method .