JP2000139705A - Electric hotwater storage vessel with vacuum vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high energy-saving effect as a whole by fitting a metallic inner vessel holding hot water in a cylinder to form a triple-hotwater storage vessel and providing a heater without interposing a vacuum vessel to heat the contents in the inner vessel for getting hotwater or retaining temperature. SOLUTION: A metallic inner vessel 4 is fitted in a vacuum double-container 3 constituting of an inner cylinder 1 and an outer cylinder 2 to form a triple- hotwater storage vessel 5. A heater 6 is provided to heat the contents in the inner container 4 for heating water or retaining the heat. In this way, the contents in the inner vessel 4 can be heated in a high thermal efficiency by using a single structure of the inner vessel 4 in the same way with the single bottom formed in the vacuum double-container 3 by the heater 6 provided in the bottom of the vacuum vessel 3 and further, a vessel wall is formed in the inside surrounding the contents in the vacuum space 9 of the double container 3 as a heat insulation structure and hence, the heat insulation property between the inside and outside of the inner vessel 4 can be further enhanced owing to the space 11 between the vessel wall and the vacuum double-container 3.

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 having a vacuum double container, and is used, for example, for a household electric pot.

[0002]

2. Description of the Related Art At present, resource saving and energy saving are required in various fields. The same is true for household electrical appliances that have been used all the time. There is an urgent need for electric pots and the like using heaters with a large energizing load.

Therefore, an electric pot using a vacuum double container made of metal has been realized. As a result, energy saving can be achieved as much as the heat insulation by the vacuum space of the vacuum double container is improved.

[0004]

However, an electric hot water storage container having a vacuum double container has a bottom portion heated by a heater so that the content liquid can be easily and efficiently heated from the outside of the vacuum double container. There is a problem that the range in which a vacuum space cannot be formed is relatively wide, such as a single bottom portion in which a vacuum space is not formed in the entire region, and there is a problem that it is not possible to make full use of the vacuum double container structure having an angle.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric hot water storage container having a vacuum double container which can form a vacuum space in many areas with an increase in the number of container walls as the number of walls of the container increases and which improves thermal efficiency. .

[0006]

Means for Solving the Problems To achieve the above object, an electric hot water storage container having a vacuum double container according to the present invention comprises:
In a vacuum double container composed of an inner cylinder and an outer cylinder and evacuated between the inner and outer cylinders, a metal inner container for storing the content liquid is fitted into the inner cylinder to form a triple water storage body, One of the features is that a heater is provided without the vacuum double container to heat the content liquid in the inner container to boil water and keep the temperature.

[0007] By such a combination of the vacuum double container and the inner container, a single structure with the inner container is formed in the vacuum double container by the heater provided in the bottom of the vacuum double container. In the case of a single bottom that has been used in the same manner, heating can be performed with high thermal efficiency, and as a heat retaining structure, a container wall is further formed inside a vacuum double container surrounding the content liquid, and this container wall and the vacuum double container The space between the inner container further enhances the heat insulation between the inside and the outside, so the thermal efficiency is improved by that much, and the heat insulation improves the inner container from an aluminum-based material with good thermal conductivity. As a result, the heating efficiency of the heater can be further improved without lowering the heat retaining property of the content liquid, so that a high energy saving effect can be obtained as a whole. In addition, since the inner container does not have an external appearance, it can be formed of an inexpensive material such as an iron-based material. In the case where a hot water storage surface is subjected to fluororesin processing involving firing at a high temperature of about 400 ° C., the processing target is a vacuum double Since it is on the inner container side instead of the container side, the sealing process in a vacuum state in which the space between the inner and outer cylinders is evacuated can be performed at a low cost with a vitreous material having a low melting point.

The electric hot water storage container having the vacuum double container according to the present invention has, in addition to the above-described structure, a discharge path connected to the inner container for guiding the content liquid to the outside, and the discharge of the content liquid through the discharge path. Another feature is that a discharge pump for discharging to the outside is provided.

[0009] With this, the content liquid stored in the inner container of the hot water storage container can be irrespective of the triple structure of the hot water storage container.
By operating the discharge pump, the liquid can be discharged to the outside through the discharge path, so that there is no inconvenience in using the content liquid.

In these cases, the inner container is screwed, welded,
At least one of brazing, caulking, gluing, and forcing
It can be provided integrally with the vacuum double container, and there is an advantage that it can be handled as a hot water storage unit, which is one component for assembling the electric hot water storage container. It is convenient for maintenance such as separating equipment such as a heater between the vacuum double container and the inner container by separating from the double container.

The discharge passage is drawn out of the vacuum double container through an opening formed at the bottom of the vacuum double container, rises outside the vacuum double container, and the discharge port opens downward to the outside. When the discharge pump is an electric pump provided in the middle of the inner part of the discharge path near the bottom of the inner container, the discharge path can be externally connected through the small opening of the vacuum double container without particularly narrowing the vacuum space of the vacuum double container. The content liquid can be automatically discharged by using the conventional electric discharge pump as in the related art.

Further, since the heater is applied to the outer surface of the bottom of the inner container, the positional relationship with the inner container is stabilized,
In particular, since it is difficult for floating to occur in the close contact state, the heating efficiency from the heater to the content liquid via the inner container is improved.

The bottom and shoulders of the water storage unit are covered with a synthetic resin bottom member and a shoulder member. The body of the water storage unit is exposed to the outside. In the configuration in which the lid for opening and closing the body opening of the following shoulder member is provided, a bottom member and a shoulder member made of a synthetic resin are attached to the bottom and the shoulder of the triple water storage body to form a complicated shape and structural part. At the same time, the exterior of the triple hot water storage unit's body is protected while covering and protecting the equipment, as well as making it easy to secure a complicated structure for attaching the lid. The structure is simplified by being exposed.

[0014] Further, the hot water storage container body is covered with a bottom member and a shoulder member made of synthetic resin at the bottom and the shoulder portion, and the body portion is also covered with the exterior member. The shoulder member has an opening of the inner container and a shoulder following the opening. In the configuration in which the lid that opens and closes the body opening of the member is provided, in addition to the case where the trunk of the triple water storage body is exposed,
The entire outer periphery of the triple water storage unit, which is a combination of a vacuum double container and an inner container, is covered with a lid, so that an external structure that is not affected by the shape or structure of the water storage unit can be obtained. high. In particular, since the container wall surrounding the inner container and the space formed by the container wall increase, the heat insulating property and the thermal efficiency are further improved.

Further, in a configuration in which the lead wire of the electric equipment including the heater of the inner container is drawn out of the vacuum double container from the opening at the bottom of the vacuum double container together with the discharge path, the vacuum of the vacuum double container is reduced. By making only one opening where a space is not formed, the above-mentioned heating with good thermal efficiency of the content liquid can be performed, and the heat insulating property and the thermal efficiency are further improved.

In the electric hot water storage container having the above features, the inner container is used so as to be detachably attached to the vacuum double container integrally with the discharge passage and the electric discharge pump, and the discharge pump is provided inside the bottom of the inner container. And driven in a non-contact manner through a magnetic coupling by an electric motor provided on the side of the vacuum double container, and the discharge path rises from the discharge pump along the inside or outside of the inner peripheral wall of the inner container and discharges afterward. In the configuration in which the outlet is opened downward to the outside, the discharge pump and the discharge path are on the inner container side, and the discharge pump is driven by a non-contact through a magnetic coupling by an electric motor provided on the vacuum double container side. Therefore, regardless of the drive of the discharge pump by the electric motor on the vacuum double container side, the inner container can be integrally attached to and detached from the discharge path and the discharge pump. There are washing or rinsing likely benefits through the wash water or water in the discharge passage and discharge the pump with parts.

In this case, in the configuration in which the heater is buried in the hot plate and installed in the inner bottom portion of the vacuum double container so that the content liquid is placed on the hot plate, the heat of the heater is transferred to the entire area of the hot plate. So that it can be in close contact with the inner container on the top of the hot plate.
Heat is easily transferred from the heater on the vacuum double container side to the inner container side that is attached to and detached from them, and the heater is not exposed even when the inner container is taken out, so it is protected from external force due to external wiping work etc. You.

The vacuum double container can be made of synthetic resin by providing a spacer between the inner cylinder and the outer cylinder to withstand external pressure, but if it is made of metal, the plate thickness may be thin. It can be configured with low bulk. In particular, since it has a triple structure, it can easily withstand an external pressure as compared with a case where only a vacuum double container is used. Therefore, the plate thickness can be made thinner than in a normal case, so that weight, size, and cost can be reduced.

If the lid is provided with a heat insulating portion, the heat of the liquid in the inner container can be prevented from escaping to the upper portion through the lid, and a higher heat retaining property can be exhibited together with the triple hot water storage unit. It is particularly effective in terms of energy saving.

[0020] Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be used alone or in combination in various combinations as far as possible.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to FIGS.

In the embodiment shown in FIGS. 1 to 5, a triple inner water container 5 is provided by fitting a metal inner container 4 into a vacuum double container 3 composed of an inner cylinder 1 and an outer cylinder 2. And a heater 6 that is provided inside the vacuum double container 3 and heats the content liquid in the inner container 4 to boil the water and keep the temperature warm, and further includes an inner container as necessary. A discharge path 7 connected to the outside 4 for guiding the content liquid to the outside and a discharge pump 8 for discharging the content liquid to the outside through the discharge path 7 are provided, and a vacuum space 9 is provided between the inner and outer cylinders 1 and 2. . Although the inner and outer cylinders 1 and 2 are made of stainless steel having low thermal conductivity in the embodiment shown in the figure, other metal materials may be used. In some cases, a spacer between the inner and outer cylinders 1 and 2 is provided in the vacuum space 9. It may be made of a synthetic resin having the provided pressure resistance structure.

With the combination of the vacuum double container 3 and the inner container 4, the heater 6 provided in the bottom of the vacuum double container 3 forms a single liquid structure of the inner container 4 by the inner container 4. In the case of the single bottom formed in the vacuum double container 3, it can be used in a similar manner to efficiently heat it, and as a heat retaining structure, the inside of the vacuum double container 3 surrounding the content liquid in the vacuum space 9 is further provided with a container wall. Since the space 11 between the container wall and the vacuum double container 3 further enhances the heat insulation between the inside and the outside of the inner container 4, the thermal efficiency is improved accordingly. In addition, by forming the inner container 4 from an aluminum-based material having good thermal conductivity by improving the heat insulating property, the heating efficiency of the heater 6 can be further improved without lowering the heat retention of the content liquid. Therefore, a high energy saving effect can be obtained as a whole. Since the inner container 4 is not visible, the inner container 4 can be formed of an inexpensive material such as an iron-based material. In a case where the hot water storage surface is to be subjected to fluororesin processing involving firing at a high temperature of about 400 ° C., the processing object is a vacuum double container. Since the inner container 4 is located on the side of the inner container 4 instead of the side 3, the sealing process in a vacuum state in which the inner and outer cylinders 1 and 2 are evacuated can be performed at low cost with a vitreous material having a low melting point. Moreover, the content liquid stored in the inner container of the hot water container 5 can be discharged to the outside through the discharge path 7 by operating the discharge pump 8 regardless of the triple structure of the hot water container 5. There is no inconvenience in using the contents liquid.

The heater 6 includes a water heater mainly used for water heating and a heat retaining heater mainly used for heat retention.
It is preferred to use streets. However, the present invention is not limited to this, and by adjusting the energization duty ratio of one heater, it is possible to obtain a heating capacity suitable for water heating and heat retention. In any case, the heater 6 is applied to the outer surface of the bottom of the inner container 4, the bottom and the shoulder of the water storage container 5 are covered with a bottom member 12 and a shoulder member 13 made of synthetic resin, and the trunk is also covered with the outer body 14. The shoulder member 13 is provided with a lid 17 for opening and closing the opening 15 of the inner container 4 and the body opening 16 of the shoulder member 13 following the opening 15. Bottom member 1
2 and the exterior body 14 are made of synthetic resin and are integrally formed. However, this can be formed separately. In the case of a separate body, the exterior body 14 having a simple structure is constituted by a metal cylinder. Can be.

As described above, since the heater 6 is applied to the bottom outer surface of the inner container 4, the positional relationship with the inner container 4 is stabilized, and in particular, it is difficult for the heater 6 to float in a close contact state. The efficiency of heating the content liquid through the inner container is improved. Further, a bottom member 12 and a shoulder member 13 made of synthetic resin are attached to the bottom and the shoulder of the triple water storage unit 5,
At the same time as covering the complex shape and structure to improve the appearance,
In addition to the case where the body of the triple hot water storage device body 5 is exposed, the vacuum double container 3 is provided while covering and protecting the equipment and easily securing a complicated structure for attaching the lid. Since the entire outer periphery of the triple water storage unit 5 in which the inner container 4 is combined with the inner container 4 is covered with the cover 17, an external appearance structure that is not affected by the shape and structure of the water storage unit is obtained, so that the degree of freedom in external design is high. . In particular, the exterior body 14 and the exterior body 1
The presence of the space 18 between the vacuum container 4 and the vacuum double container 3 increases the container wall surrounding the inner container 4 and the resulting gap, thereby further increasing the heat insulating property and the thermal efficiency. However, if it is not necessary to particularly increase the heat retaining property, the body of the hot water storage unit 5 can be exposed to the outside to simplify the structure.

The discharge passage 7 is drawn out of the vacuum double container 3 through an opening 25 formed at the bottom of the vacuum double container 3, rises outside the vacuum double container 3, and the discharge port 7a faces downward. The discharge pump 8 is an electric pump provided in the middle of the discharge passage 7 near the bottom of the inner container 4. As a result, the discharge path 7 is drawn out to the outside through the small opening 25 of the vacuum double container 3 without particularly narrowing the vacuum space 9 of the vacuum double container 3, and the conventional electric discharge pump 8 such as a centrifugal pump is conventionally used. The liquid content can be automatically discharged by using the liquid.

In the embodiment shown in FIG. 1, the lead wires 22 to 24 of the electric equipment such as the temperature sensor 19 including the heater 6 and the temperature fuse 21 applied to the inner container 4 are connected to the vacuum double container 3.
Is drawn out of the vacuum double container 3 through an opening 26 different from the opening 25 of the discharge passage 7 at the bottom of the discharge passage 7. Since the space 9 is not particularly narrowed, the effect of keeping the content liquid in the inner container 4 by the vacuum space 9 of the vacuum double container 3 is high. However, as in the embodiment shown in FIG. 4, each of the discharge path 7 and the lead wires 22 to 24 can be drawn out through one opening 25, whereby the vacuum space 9 of the vacuum double container 3 is further expanded to improve the performance. Can be even higher.

The inner container 4 has the shoulder member 1 as in the embodiment of FIG.
3 can be integrated with the vacuum double container 3 by screwing with the screw 27 or direct screwing, or by at least one of welding, brazing, caulking, bonding, and forced fitting. In order to assemble the container, there is an advantage that the container can be handled as a single component, that is, the hot water storage container body 5. In screwing, the inner container 4 is separated from the vacuum double container 3 as necessary by unscrewing the screw 27, and the Heavy container 3
This is convenient for maintenance such as replacement of equipment such as the heater 6, the temperature sensor 19, and the temperature fuse 21 between the inner container 4 and the inner container 4.

Here, the embodiment shown in FIGS. 1 to 3 will be described in detail. As shown in FIG. 2 (a), the vacuum double container 3 has an outer cylinder 2 having a straight body, a slightly upward stepped portion 1a, and an outer portion for forcibly fitting the inner container 4 immediately below the stepped portion 1a. In a state where the inner cylinder 1 having a substantially straight body portion having the engagement concave portion 1b which is annularly recessed is fitted to the inner and outer cylinders 1,
2 outer flanges 1c and 2c are overlapped with each other, and the outer peripheral portions are separated by TI.
It is integrated by welding and joining by G welding or the like so that there is no vacuum leakage. However, instead of welding, brazing or airtight bonding can be used. Openings 25 and 26 are inner cylinder 1
The slightly long outwardly extending cylindrical portions 1d and 1e projecting out of the bottom of the outer cylinder 2 formed by drawing on the bottom of the outer cylinder 2 are fitted into the extremely short cylindrical portions 2d and 2e formed by drawing on the bottom of the outer cylinder 2 in a double pipe structure. At the same time, both ends are welded and joined together to prevent vacuum leakage. However, this welding can be replaced with brazing or airtight bonding.

On the other hand, as shown in FIG. 2 (b), the inner container 4 has a narrow opening 15 formed by drawing in the upper part of a straight body, and the engaging recess of the inner cylinder 1 is provided immediately below the opening. An engagement projection 4b is formed on the outer side of the engagement projection 4b and elastically engages with the engagement projection 4b. The protrusion 4b and the recess 1b of the inner cylinder 1 are also integrated by forcible fitting. Therefore, the inner container 4 need not be integrated with the screw 27, and the inner container 4 can be forcibly detached from the vacuum double container 3 and separated by this degree of forcible fitting.
The convenience of maintenance is not impaired. A recess 4a is formed at the bottom of the inner container 4 to which the heater 6 is fitted from below, and a temperature sensor 19 is applied from below to the center of the ceiling wall of the recess 4a. A depressed recess 4d is formed. In addition, inner container 4
The outer peripheral portion of the concave portion 4a at the bottom is provided with a cylindrical portion 4e which is formed to be drawn in a very short inward direction.
Is fitted.

A metal fitting 29 is attached to the outer periphery of the concave portion 4a at the bottom of the inner container 4 by welding, brazing, or bonding. A metal heat shield plate 31 such as a steel plate is attached to the metal fitting 29 with screws 32.
The heater 6 is pressed to the bottom of the inner container 4 by a spring plate 33 and a holding plate 34 sandwiched between the inner container 1 and the heater 6, so that the heat of the heater 6 is efficiently transmitted to the inner container 4 without a gap. I have to. In addition, this allows the inner container 4
Can be treated as one part together with the heater 6 to assemble the electric hot water storage container.

In the vacuum double container 3, a seal packing 35 fitted on the outer periphery of the outer flanges 1c, 2c is placed on an upward step 13a formed by the shoulder member 13 below the body opening 16. . The inner container 4 fitted to the vacuum double container 3 has the outer flange 4c placed on the seal packing 35 of the vacuum double container 3 and protrudes outward from the inner container 4 by means of the shoulder member 13 by the screw 27. One more upward step 13
b screwed onto the vacuum double container 3 and the shoulder member 1
3 is integrated. The screws 27 can be screwed to the vacuum double container 3 to be integrated.

The cover member 17 is attached to the rear bearing portion 41 of the synthetic resin shoulder member 13 so that the lid 17 can be opened and closed by a hinge pin 42. When the inward opening is opened by the downward movement of the stopper 43, the bearing portion 41 allows the hinge pin 42 to enter and exit at an opening degree at which the fitting between the lid 17 and the body opening 16 is released. Can be attached and detached. The lid 17 is provided with the body opening 16.
And an inner lid 45 for opening and closing the opening 15 of the vacuum double container 3. The inner cylinder 1 is disposed between the upper lid 44 and the inner lid 45 attached thereto from below with a fitting screw 55. A steam passage 46 for letting out the inside steam to the outside is formed. In the steam passage 46, an opening 46 a into the inner cylinder 1 is provided in the inner lid 45, and an opening 46 b to the outside is provided on the outer surface of the upper lid 44. In the middle of the steam passage 46, the electric hot water storage container is temporarily rolled over so that the content liquid tends to flow out through the steam passage 46 to the outside, or is temporarily bypassed and the opening 46 b is bypassed.
A reservoir 46c is provided to delay the arrival of the electric hot water storage container until the content liquid reaches the opening 46b.

The steam passage 46 is provided with a water stop valve 47 for closing the steam passage 46 when necessary, which closes the steam passage 46 when the electric hot water storage container rolls over. In the embodiment shown in FIG.
It is provided immediately inside 6a. When the lid 17 is closed, the front portion of the lid 17
There is provided a lock member 49 for locking the lock in a closed state. The lock member 49 is urged by a spring 51 so as to always maintain the engagement position for automatically performing the lock. An unlocking member 52 is also provided to unlock the lock by the lock member 49. The lock release member 52 is attached to the lid 17 so as to be rotatable by a shaft 52c, and the lock member 49 is retracted against the spring 51 by a counterclockwise rotation when the front end 52a is pushed down by a finger of a hand. Thus, the unlocked lid 17 can be lifted and opened by lifting the rear end 52b with another finger.

A heat insulating portion containing a heat insulating material 53 is provided above the vapor passage 46 in the upper lid 44 of the lid 17, and the vacuum space 9 is formed by the aperture structure of the opening 15 formed by the inner cylinder of the vacuum double container 3. Combined with the inward protrusion, the heat of the content liquid is prevented from escaping to the upper portion through the opening 15 and the body opening 16, so that the thermal efficiency is further increased. However, the opening 1 formed by the inner cylinder 1 with the inner lid 45 having a heat insulating structure.
It is convenient to close the portion 5 directly with the heat insulating portion of the lid 17 in order to prevent escape of heat upward.

In this case, a heat insulation structure in which the inner lid 45 has a metal vacuum double structure can be used.

The seal lip 54a of the seal packing 54, which is fitted to the outer periphery of the inner lid 45 and sandwiched between the upper lid 44, is pressed against the edge of the opening 15 formed by the inner cylinder 1 so that the opening 15 and the inner lid 45 It prevents steam and heat from escaping to the outside.

The heater 6 has a donut shape, and a temperature sensor 19 is applied to the center of the bottom of the inner cylinder 1 through an opening at the center. The thermal fuse 21 is held by a metal fitting 56 attached to the heat shield plate 31 with a screw 57, and is cut off when the temperature around the heater 6 rises abnormally to cut off the power supply to the heater 6.

The discharge path 7 is connected to the connection pipe 28 of the inner container 4.
Is connected to a suction port of a discharge pump 8 installed below the bottom of the vacuum double container 3 through a synthetic resin joint 61, and a rising portion is connected to the discharge port of the discharge pump 8 through a synthetic resin joint 62. A liquid amount display tube 63 made of transparent or anti-transparent glass or resin is formed and connected. The upper end of the liquid amount display tube 63 has an inverted U-shape in a forwardly protruding portion 13c of the shoulder member 13. It is connected to the lower part of the water stop valve 65 when the unit 64 is located overturned. The unit 64 extends to the distal end of the projection 13c, and exposes the discharge port 7a to the outside from the bottom opening 66a of the synthetic resin pipe cover 66 applied to the projection 13c from below. The liquid amount display tube 63 is provided with a liquid amount display window 67 provided on one side of the front part of the exterior body 14.
The liquid amount is displayed in such a manner that the liquid level in the inner container 4 in the liquid amount display tube 63 can be visually recognized from the outside.

An operation panel 68 is provided on the upper surface of the protrusion 13c of the shoulder member 13, and an operation board 69 is provided inside the operation panel 68. The operation board 69 includes a switch group operated by various key operations on the operation panel 68, a display lamp for displaying a set operation mode and operation state, a buzzer for warning, and the like, and is built in the bottom member 12. A signal is transmitted to and received from the control board 71.

The control board 71 is accommodated in a downwardly facing circuit box 72 integrally formed at the edge of the central opening of the bottom member 12. A lid may be provided at the opening of the circuit box 72. The control board 71 includes a heater 6 and a discharge pump 8.
Is mounted with a control circuit 73 for controlling the operation in accordance with the operation on the operation panel 68. A bottom cover 74 is attached to the central opening of the bottom member 12 by fitting a part of the fitting from below and screwing a part of the fitting. A rotating seat 75 is rotatably fitted to the outer peripheral portion of the bottom lid 74 so that when the electric hot water container is fixed, the entire electric hot water container rotates on the rotating seat 75 and can change its direction. .

A power supply connection port 76 is provided on the outer peripheral surface of the bottom member 12 so that it can be connected to a power supply. From the power supply connection port 76, the heater 6, the operation board 69, and the control board 71
A rechargeable battery 77 is provided in the power supply circuit to the power supply. Thereby, when the power is connected to the power supply connection port 76, the secondary battery 77 is also supplied with power and charged, and when the power is not connected, the secondary battery 77 is supplied with power to necessary parts and used as usual. Alternatively, only the discharge pump 8 is driven so that the content liquid can be automatically discharged.
It is convenient for the power supply connection port 76 to be able to connect a connection cord 80 from a cigarette socket of a car 79 in addition to a connection cord 78 for a home power supply. Also, FIG. 3 shows how to charge a secondary battery by supplying power from a household power supply.
It is also convenient to use a charging adapter 81 having a connection part between the home power supply and the power supply connection port 76 as shown in FIG.

In the embodiment shown in FIG. 5, when the vacuum double container 3 and the inner container 4 are forcibly fitted, in addition to the engaging concave portion 1b and the engaging convex portion 4b, a circular shape is formed inside the lower portion of the inner cylinder 1 inside. A forcible fitting portion of the protruding engaging convex portion 1b1 and the engaging concave portion 4b1 concaved annularly inward at the lower portion of the inner container 4 is further provided,
The degree of integration between the inner cylinder 1 and the inner container 4 by forcible fitting is increased.

Further, the upper lid 44 of the lid 17 is
The inner cover 1 is formed into a shape that can enter into the opening 15 formed by the inner cylinder 1 together with the inner cover 45, and a heat insulating material 53 is built in a portion of the upper cover 44 that enters the opening 15, and the opening 15 is closed with a heat insulating structure. This makes it easier to suppress the escape of heat to the upper portion through the opening 15. The lock release member 52 is rotated by lifting the rear end portion 52b by hand, so that the lock member 4 is rotated.
9 and the unlocking member 52
The lid 17 can be opened by pulling up. In addition, the vacuum double container 3 has a connecting member 91 attached to the bottom thereof by welding, brazing, or bonding.
Are connected to each other by a screw 92. By this connection, each of the vacuum double container 3, the bottom member 12, the shoulder member 13, and the exterior body 14 is integrally connected so that only the inner container 4 can be easily removed. . However, it is preferable that such an integrated connection structure is also applied to the embodiment of FIG.

The other structure is not particularly different from that of the embodiment shown in FIG. 1, and the same members are denoted by the same reference numerals and overlapping description will be omitted.

In another embodiment shown in FIGS. 6 to 8, the inner container 4 is in a state in which the lid 17 is removed, and the vacuum is integrally formed with the discharge path 7 and the electric discharge pump 8 as shown in FIGS. The vacuum double container 3 is fitted with some play so that it can be detached from the double container 3 or fitted as shown in FIG. The discharge pump 8 is provided in the bottom of the inner container 4 and an electric motor 10 provided on the vacuum double container 3 side.
1 is driven in a non-contact manner through the magnetic couplings 102 and 103, the discharge path 7 rises from the discharge pump 8 along the outer wall of the inner container 4, and the rear discharge port 7a opens downward to the outside. . However, you may make it stand up along the inner side of the peripheral wall of the inner container 4.

The unit 64 of the discharge path 7 includes a projection 13 c of the liquid injection guide 104 provided in the projection 13 c of the shoulder member 13.
The discharge port 7a is opened on the upper end receiving port 104a which faces the part of the vessel opening 16 that has entered the pipe opening 66a.
The liquid is injected from the liquid injection port 104b facing the bottom opening 66a of the nozzle. Thus, the unit 64 having the discharge port 7a does not need to enter the protruding portion 13c of the shoulder member 13, so that the inner container 4 is not hindered from being integrally attached to and detached from the discharge path 7.

The body of the outer cylinder 2 of the vacuum double container 3 has a structure that is exposed to the outside, and the structure is simplified by eliminating the need for an exterior body covering the body. The inner container 4 has a shoulder member 111 made of synthetic resin attached to the upper end, and a handle 112 for attachment and detachment is attached to the shoulder member 111 by a shaft 113.
The shaft 3 is fitted into the notch 13d of the shoulder member 13 of the vacuum double container 3 so that the handle 112 can go out and undulate even when the inner container 4 is fitted into the vacuum double container 3. Has become. Accordingly, since the inner container 4 does not come off when the lid 17 is closed, the entire electric hot water storage container can be carried by holding the handle 112. However, it is preferable to provide a lock mechanism between the shoulder members 13 and 111, for example, similar to the case of the lid 17 that locks the inner container 4 in a state of being fitted into the vacuum double container 3 for carrying the whole. A discharge portion cover 114 that covers the discharge path 7 is provided on the shoulder member 111.

As described above, the discharge pump 8 and the discharge path 7
Is the inner container 4 side, and the discharge pump 8 is a magnetic coupling 10 by an electric motor 101 provided on the vacuum double container 3 side.
2 and 103, the inner container 4 is connected to the discharge path 7 and the discharge pump 8 regardless of the driving of the discharge pump 8 by the electric motor 101 on the vacuum double container 3 side.
In the detached state, the inside of the inner container 4 and the inside of the discharge path 7 and the discharge pump 8 have the advantage of being easily washed and rinsed with washing water or water.

The heater 6 is buried in the hot platen 115 and installed in the bottom of the vacuum double container 3. As a result, the heat of the heater 6 can be spread over the entire area of the hot platen 115 and the inner surface 4 can be brought into close contact with the upper surface of the hot platen 115. It is easy to transfer heat to the container 4 side, and even if the inner container 4 is taken out, the heater 6
Since it is not exposed, it is protected from external force due to wiping work from the outside.

Further, each of the lead wires 22 to 24 is led out through a single bottom portion 3a which does not form the vacuum space 9 of the vacuum double container 3. However, heater 6
Therefore, the heat insulating function is higher than in the conventional case because an area equivalent to that of the single bottom which has been conventionally provided is not necessary for applying the above.

The vacuum double container 3 is, as described above,
If a spacer is provided between the inner cylinder 1 and the outer cylinder 2 to withstand external pressure, the spacer can be made of synthetic resin.
If it is made of metal, it can be made thin because the plate thickness can be thin. In particular, since it has a triple structure, it is easier to withstand external pressure and has higher heat insulation than the case where only the vacuum double container 3 is used.
By making the plate thickness thinner than usual, it is possible to reduce the weight, size, and cost.

Since other structures are not particularly different from those of the embodiment shown in FIGS. 1 to 3 and the like, the same members are denoted by the same reference numerals and overlapping description will be omitted.

In the embodiment shown in FIG. 9, the discharge pump 8 is connected to the connection pipe 121 of the discharge path 7 formed in the vacuum double container 3 and the outlet 12 having the check valve 122 on the inner container 4 side.
When the inner container 4 is fitted to the vacuum double container 3, the outlet 123 is fitted watertight through an O-ring 124 into an opening 121 a provided inside the connection pipe 121, and is integrally formed with the joint 61. The check valve 122 is opened by the projected protrusion 61a, so that the content liquid enters the discharge pump 8 and is discharged through the discharge path 7. When the inner container 4 is removed, the check valve 122 takes the outlet 123 instantaneously by the spring 125, so that the contents liquid does not leak.
As a result, the inner container 4 has the discharge pump 8
It can be attached and detached even if it is provided on the side of.

[0055]

According to one feature of the electric hot water storage container having the vacuum double container according to the present invention, the content liquid of the internal container is united by the heater provided in the bottom of the vacuum double container. In the same manner as in the case of a single bottom formed in a vacuum double container, heating can be performed with high thermal efficiency by using the same method.In addition, as a heat retaining structure, a container wall is further formed inside the vacuum double container surrounding the content liquid, The space between the container wall and the vacuum double container further enhances the heat insulation between the inside and the outside of the inner container, so that the thermal efficiency is improved accordingly. By using a material having good conductivity, the heating efficiency of the heater can be further improved without deteriorating the heat retention of the content liquid, so that a high energy saving effect can be obtained as a whole. In addition, since the inner container does not have an external appearance, it can be formed of an inexpensive material such as an iron-based material. In the case where a hot water storage surface is subjected to fluororesin processing involving firing at a high temperature of about 400 ° C., the processing target is vacuum double Since it is on the inner container side instead of the container side, the sealing process in a vacuum state in which the space between the inner and outer cylinders is evacuated can be performed at a low cost with a vitreous material having a low melting point.

According to another feature of the electric hot water storage container having the vacuum double container of the present invention, in addition to the above, the content liquid stored in the inner container of the hot water storage container is tripled in the hot water storage container. Regardless of the structure, by operating the discharge pump, the liquid can be discharged to the outside through the discharge path, so that there is no inconvenience in using the content liquid.

In these cases, the inner container is screwed, welded,
At least one of brazing, caulking, gluing, and forcing
It can be provided integrally with the vacuum double container, and there is an advantage that it can be handled as a hot water storage unit, which is one component for assembling the electric hot water storage container. It is convenient for maintenance such as separating equipment such as a heater between the vacuum double container and the inner container by separating from the double container.

Further, the discharge path is drawn out of the vacuum double container through an opening formed in the bottom of the vacuum double container, rises outside the vacuum double container, and the discharge port opens downward to the outside. When the discharge pump is an electric pump provided in the middle of the inner part of the discharge path near the bottom of the inner container, the discharge path can be externally connected through the small opening of the vacuum double container without particularly narrowing the vacuum space of the vacuum double container. The content liquid can be automatically discharged by using the conventional electric discharge pump as in the related art.

Further, since the heater is applied to the outer surface of the bottom of the inner container, the positional relationship with the inner container is stabilized,
In particular, since it is difficult for floating to occur in the close contact state, the heating efficiency from the heater to the content liquid via the inner container is improved.

The bottom and shoulders of the water storage body are covered with a synthetic resin bottom member and shoulder member, and the body of the water storage body is exposed to the outside. In the configuration in which the lid for opening and closing the body opening of the following shoulder member is provided, a bottom member and a shoulder member made of a synthetic resin are attached to the bottom and the shoulder of the triple water storage body to form a complicated shape and structural part. At the same time, the exterior of the triple hot water storage unit's body is protected while covering and protecting the equipment, as well as making it easy to secure a complicated structure for attaching the lid. The structure is simplified by being exposed.

The hot water storage unit has a bottom portion and a shoulder portion covered with a synthetic resin bottom member and a shoulder member, and a body portion also covered with a sheath member. The shoulder member has an opening of the inner container and a shoulder extending therefrom. In the configuration in which the lid that opens and closes the body opening of the member is provided, in addition to the case where the trunk of the triple water storage body is exposed,
The entire outer periphery of the triple water storage unit, which is a combination of a vacuum double container and an inner container, is covered with a lid, so that an external structure that is not affected by the shape or structure of the water storage unit can be obtained. high. In particular, since the container wall surrounding the inner container and the space formed by the container wall increase, the heat insulating property and the thermal efficiency are further improved.

Further, in a configuration in which the lead wires of the electric equipment including the heater of the inner container are drawn out of the vacuum double container from the opening at the bottom of the vacuum double container together with the discharge path, the vacuum of the vacuum double container is reduced. By making only one opening where a space is not formed, the above-mentioned heating with good thermal efficiency of the content liquid can be performed, and the heat insulating property and the thermal efficiency are further improved.

In the electric hot water storage container having the above-mentioned features, the inner container is used so as to be detachably attached to the vacuum double container integrally with the discharge passage and the electric discharge pump, and the discharge pump is provided inside the bottom of the inner container. And driven in a non-contact manner through a magnetic coupling by an electric motor provided on the side of the vacuum double container, and the discharge path rises from the discharge pump along the inside or outside of the inner peripheral wall of the inner container and discharges afterward. In the configuration in which the outlet is opened downward to the outside, the discharge pump and the discharge path are on the inner container side, and the discharge pump is driven by a non-contact through a magnetic coupling by an electric motor provided on the vacuum double container side. Therefore, regardless of the drive of the discharge pump by the electric motor on the vacuum double container side, the inner container can be integrally attached to and detached from the discharge path and the discharge pump. There are washing or rinsing likely benefits through the wash water or water in the discharge passage and discharge the pump with parts.

In this case, in a configuration in which the heater is embedded in the hot plate and installed in the bottom of the vacuum double container so that the inner container is placed on the hot plate, the heat of the heater is spread over the entire hot plate. It can be spread and adhere to the inner container on the upper surface of the hot plate, so it is easy to transfer heat from the heater on the vacuum double container side to the inner container that is attached to and detached from them, and the inner container is taken out Also, since the heater is not exposed, it is protected from external force due to wiping work from the outside.

The vacuum double container can be made of a synthetic resin by providing a spacer between the inner tube and the outer tube to withstand an external pressure, but if it is made of metal, the plate thickness may be thin. It can be configured with low bulk. In particular, since it has a triple structure, it can easily withstand an external pressure as compared with a case where only a vacuum double container is used. Therefore, the plate thickness can be made thinner than in a normal case, so that the weight, size, and cost can be reduced.

When the heat insulating portion is provided on the lid, it is possible to suppress the heat of the content liquid in the inner container from escaping to the upper portion through the lid, and to exhibit a higher heat retaining property together with the triple water storage container. It is particularly effective in terms of energy saving.

[Brief description of the drawings]

FIG. 1 shows an electric hot water storage container according to one embodiment of the present invention.
FIG. 4 is a cross-sectional view showing one embodiment.

FIGS. 2A and 2B show a vacuum double container and an inner container of the electric hot water storage container of FIG. 1, wherein FIG.
Is a sectional view of the inner container.

FIG. 3 is an explanatory diagram showing an example of a connection mode of the electric hot water storage container of FIG. 1 with a power supply.

FIG. 4 is a sectional view of a bottom part showing another example of the electric hot water storage container of the one embodiment.

FIG. 5 is a sectional view showing another example of the electric hot water storage container of the one embodiment.

FIG. 6 is a sectional view showing an example of an electric hot water storage container according to another embodiment of the present invention.

FIG. 7 shows a state in which the inner container of the electric hot water storage container of FIG. 6 is being removed.
Or it is sectional drawing which shows the state in the middle of mounting.

8 is a perspective view showing the electric hot water storage container of FIG. 6 in a state where an inner container is removed.

FIG. 9 is a partial cross-sectional view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylinder 1b Concave part 1b1 Convex part 2 Outer cylinder 3 Vacuum double container 4 Inner container 4b Convex part 4b1 Concave part 5 Hot water storage unit 6 Heater 7 Discharge path 8 Discharge pump 9 Vacuum space 12 Bottom member 13 Shoulder member 14 Exterior body 15 Opening 16 Body opening 17 Lid 19 Temperature sensor 21 Thermal fuse 22-24 Lead wire 25, 26 Opening 27 Screw 53 Insulation material 115 Hot plate

Continued on the front page F-term (reference) 4B002 AA01 AA16 AA18 BA01 BA21 BA22 BA31 BA44 BA51 BA53 BA55 BA59 BA60 CA12 CA14 CA31 CA32 CA34 CA43 4B055 AA34 AA35 BA27 BA35 BA38 CA01 CA09 CA17 CA19 CA21 CA71 CA81 CB07 CB13 CC21 CC27 CC45 CD61 DA02 DB02 FA01 FA02 FA03 FA04 FA06 FA09 FB01 FB02 FB33 FC11 FE03 FE05 FE10

Claims (12)

[Claims] 1. A triple hot water storage device in which a metal inner container for storing a hot liquid is fitted into the inner cylinder in a vacuum double container composed of an inner cylinder and an outer cylinder and having a vacuum between the inner and outer cylinders. An electric device with a vacuum double container, comprising a heater for forming a body and heating the content liquid in the inner container to heat and heat the content liquid in the inner container without interposing the vacuum double container. Hot water storage container. 2. A triple hot water storage device in which a metal inner container for storing a hot liquid is fitted into the inner cylinder in a vacuum double container constituted by an inner cylinder and an outer cylinder and having a vacuum between the inner and outer cylinders. A heater that forms a body, is provided without a vacuum double container, and heats and heats the content liquid in the inner container, and a discharge path that is connected to the inner container and guides the content liquid to the outside, An electric hot water storage container having a vacuum double container, comprising: a discharge pump for discharging the content liquid to the outside through the discharge path. 3. The container according to claim 1, wherein the inner container is provided integrally with the vacuum double container by at least one of screwing, welding, brazing, caulking, bonding, and forcible fitting. An electric hot water storage container as described. 4. The discharge path is drawn out of the vacuum double container through an opening formed in the bottom of the vacuum double container, rises outside the vacuum double container, and the discharge port opens downward to the outside.
The electric hot water storage container according to any one of claims 1 and 2, wherein the discharge pump is an electric pump provided in the middle of the discharge passage near the bottom of the inner container. 5. The electric hot water storage container according to claim 1, wherein the heater is applied to an outer surface of a bottom portion of the inner container. 6. A bottom part and a shoulder part of the hot water storage unit are covered with a bottom member and a shoulder member made of synthetic resin, and a body part of the hot water storage unit is exposed to the outside. The electric hot water storage container according to any one of claims 1 to 5, further comprising a lid that opens and closes a body opening of a subsequent shoulder member. 7. The hot water storage body has a bottom portion and a shoulder portion exteriorly covered with a synthetic resin bottom member and a shoulder member, and a body portion also exteriorly covered with an exterior body. The shoulder member has an opening of an inner container and a shoulder following the opening. A lid for opening and closing the body opening of the member is provided.
The electric hot water storage container according to any one of claims 5 to 10. 8. The electric hot water storage container according to claim 4, wherein the lead wire of the electric equipment including the inner container heater is drawn out of the vacuum double container from the opening at the bottom of the vacuum double container together with the discharge path. . 9. The inner container is used integrally with the discharge passage and the electric discharge pump so as to be detachably attached to the vacuum double container, and the discharge pump is provided in the bottom of the inner container. The electric motor provided on the side of the heavy container is driven in a non-contact manner through a magnetic coupling, the discharge path rises along the peripheral wall of the inner container from the discharge pump, and the rear discharge port is opened downward to the outside. Item 9. An electric hot water storage container according to item 8. 10. The heater according to claim 8, wherein the heater is buried in the hot plate and installed in the inner bottom portion of the vacuum double container so that the inner container is placed on the hot plate. Electric hot water storage container. 11. The vacuum double container is made of metal.
The electric hot water storage container according to any one of claims 10 to 10. 12. The lid according to claim 1, wherein the lid has a heat insulating portion.
The electric hot water storage container according to any one of claims 1 to 7.