JPH041867Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a water pot equipped with a vacuum container used for boiling water and keeping it warm.

Conventional technology Conventionally, the seal for steam, hot water, water, etc. in this type of jar pot is as shown in FIG. It was something to do. Note 3 is the outer container,
4 is a vacuum layer, 13 is an underwater heater, and 15 is a lid.

Problems that the invention aims to solve In conventional devices, when keeping high-temperature water warm, steam directly hits the resin in the lid, which accelerates the deterioration of the resin. In order to improve the heat retention performance of a vacuum container, it is effective to form a seal against steam and hot water near the joint between the mouth and the inner container, and to prevent heat radiation due to conduction to the outer container side. However, sealing in a high-temperature area means that the components at that location, such as resin, will deteriorate more quickly.

Means for Solving the Problems The present invention was made to eliminate the above-mentioned drawbacks.
This seals the hot water to reduce conductive heat radiation to the outer container, and at the same time prevents the resin from deteriorating due to steam, etc. Therefore, a metal cylindrical cover with a flange with the lower edge opened outward is installed inside the mouth.
The flange is arranged near the inner container joint at the mouth, a gasket is provided in the space between the mouth, the cover, and the flange, and a resin cylinder connected to the outer frame is attached above the gasket.

Function Hot water and steam are sealed with a lid, cover, and gasket. Since the cover is made of a resin cylinder, it has high thermal resistance and low heat transfer and heat radiation. Also, boil the cylinder and padskin in hot water.
Protect from steam. Further, the cylinder is held by the outer frame, and the seal is held by the flange.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. The configuration of this embodiment is as shown in FIGS. 1 and 2. FIG. 1 shows the overall structure of the jar pot equipped with a vacuum container, and FIG. 2 shows details of the mouth.

In the figure, reference numeral 1 denotes a vacuum container consisting of an inner container 2 made of metal such as stainless steel, an outer container 3, and a vacuum layer 4 formed between the inner and outer containers 2 and 3.
Reference numeral 5 denotes a mouth portion having a diameter smaller than that of the body of the inner container 2, a straight cylindrical shape, and an appropriate length. One end of the mouth part is joined to the inner container 2, and the other part is joined to the outer container 3. Reference numeral 6 denotes a metal cylindrical cover that is located inside the mouth 5 and is concentric with the mouth 5 and has one end opened outward in the form of a flange. The flange 7 of the cover 6 is arranged near the joint 8 of the mouth 5 and the inner container 2. Mouth part 5, cover 6,
A resin cylinder 10 is installed in the space surrounded by the flange 7, and a gasket 9 is installed along the lower edge of the cylinder 10, and the opening 5, the gasket 9, and the cover 6 are completely sealed. ing. The other edge of the resin cylinder 10 is joined to an outer frame 11 formed on the outside of the vacuum container 1. 13 is vacuum container 1
The submersible heater is installed inside the submersible heater, and the inside is equipped with a main heater, a heat-retaining heater, and a thermometer 14 for temperature detection. 15 has air pump 1 inside
6. 17 is a hot water supply pipe for guiding hot water inside the vacuum container 1 to the outside, and 18 is a metal plate that covers the lower surface of the lid 15.

The operation of this embodiment having the above configuration will be described.

When water is put inside and the main heater is energized and the water boils, a sensor (not shown) detects this, stops energizing the main heater, and switches to energizing the heat-retaining heater. Since the vacuum container 1 has a heat insulating structure, convective heat radiation from the container is reduced. However, heat is radiated by conduction from the high-temperature inner container 2 to the low-temperature outer container 3 through the material of the mouth 5. Therefore, increasing the thermal resistance at the mouth portion 5 is effective in reducing conductive heat radiation. As a means of increasing thermal resistance, the diameter of the mouth part 5 is made small, the thickness of the material of the mouth part 5 is made thin, the material used for the mouth part 5 is made of a material with low thermal conductivity, and the length of the mouth part 5 is made small. For example, the structure may be such that the length is made long and sealed close to the inner container 2 to prevent high-temperature steam etc. from approaching the joint with the outer container 3.

In this embodiment, the length of the mouth portion 5 is increased by providing the cylinder 10, thereby increasing the insulation distance. This increases the thermal resistance of the mouth portion 5 and reduces the amount of conductive heat radiated from the inner container 2 to the outer container 3 through the material of the vacuum container 1 itself. In addition, in order to increase the insulation distance,
It is necessary to seal steam etc. near the joint 8 between the mouth 5 and the inner container. However, in order to do this, the gasket 9 and the surface of the resin holding it in contact with the steam. Therefore, the resin is more likely to deteriorate due to steam. As a countermeasure for this, in this example,
The packing 9 and the resin cylinder 10 are covered with a metal cover 6 to prevent the packing 9 and the resin from deteriorating. At the same time, the cylinder 10 is integrally joined to the outer frame 11 to increase durability, and the gasket 9 is held by the flange 7 to increase the sealing effect.

Effects of the invention According to the invention, a metal cover with a flange is provided inside the mouth, and a gasket and a resin cylinder are attached to the space between the mouth, the cover, and the flange. Thermal resistance is increased and conductive heat radiation from the mouth portion is reduced. At the same time, by covering the resin and packing with a metal cover, it is possible to prevent their deterioration and increase the sealing effect.

[Brief explanation of the drawing]

FIG. 1 is an overall structural diagram of a jar pot equipped with a vacuum container according to an embodiment of the present invention, FIG. 2 is a detailed view of the opening, and FIG. 3 is an overall structural diagram of a conventional jar pot. 1 is a vacuum container, 2 is an inner container, 3 is an outer container, 4 is a vacuum layer, 5 is a mouth part, 6 is a cover, 7 is a flange,
9 is a packing and 10 is a cylinder.

Claims (1)

[Scope of utility model registration request] A vacuum layer is provided between the inner container and the outer container, and a cylindrical opening with a smaller diameter than the body of the inner container is formed at the joint between the upper parts of the inner and outer containers. Open the edges outward and attach the flange 7.
A cylindrical metal cover 6 is inserted into the space surrounded by the opening 5, the cover 6, and the flange 7.
This jar pot is characterized in that a gasket 9 in contact with the gasket 9 and a resin cylinder 10 located above the gasket 9 are provided, and the resin cylinder 10 is integrally joined to an outer frame 11.