JPS5924271Y2 - Metal vacuum double pot with liquid level indicator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a metal vacuum double pot as a heat insulating container with a liquid level display device.

This type of pot can overcome the biggest drawback of vacuum double bottles, which is that they are susceptible to shock, and does not inherently require a protective structure like vacuum double bottles.

However, the cover that covers the liquid level display pipe that is erected so as to communicate with the inside of the metal vacuum double container is a vertical cover that is installed on one side of the exterior body of the metal vacuum double container. It is installed using a window.

For this reason, although it does not require the protective structure of a double vacuum vacuum container made of metal, it has a complicated structure that is not much different from a double vacuum paper pot.

This idea takes advantage of the impact resistance of the metal vacuum double container, and the cover of the indicator pipe is directly attached to the container, eliminating the need for an exterior body. The purpose is to provide a vacuum double pot.

To explain the embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes a container body, in which a vacuum exists between an inner container 2 made of stainless steel and an outer container 3 that also serves as an exterior body made of stainless steel. It is considered as a heat insulating space 4.

Another stainless steel shoulder plate 5 is provided between the upper ends of the inner container 2 and the outer container 3;
It can be integrally molded onto the upper end of either the outer container 3 or the outer container 3.

The joint 6 that forms the vacuum insulation space 4 between the inner and outer containers 2 and 3 may be joined by any suitable joining means already known such as soldering. Bonding can be performed by working in a vacuum space.

In some cases, after joining the seam 6 in the atmosphere, the air in the space 4 is suctioned and removed from a chip provided in a part to create a predetermined degree of vacuum, and the chip is melted and closed using filler metal or other filler. Alternatively, in the case of a melt-occlusion method, a chip of a suitable material and structure may be provided.

The inner container 2 has a single bottom portion 7 that does not form a vacuum insulation space 4 with the outer container 3, and is formed of a separate stainless steel plate, and a heat retaining heater 8 and a water boiling heater 9 are installed around the outer periphery of the single bottom portion 7.
is wrapped.

Reference numeral 10 denotes a heater attachment band, which is wrapped around the heaters 8 and 9 and tightened at both ends with screws 11, thereby crimping and fixing the heaters 8 and 9 to the outer periphery of the single bottom portion 7.

The vacuum insulation space 4 hangs downward from the single bottom part 7 so as to cover the single bottom part 7, and forms a bottom part 12 of the container body, and a synthetic resin bottom plate 13 which is separate from the container body 1 is attached to this bottom part 12. There is.

Temperature control members such as a thermostat 14 for controlling energization of the kettle heater 9, a temperature-sensitive reed switch (so-called TR5) 15 for controlling energization of the heat-retaining heater 8, and a temperature fuse 16 are attached to the lower surface of the single bottom portion 7.

The container body 1 including the single bottom part 7 is made of stainless steel with low thermal conductivity and has a vacuum insulation space 4, so it has excellent impact resistance and provides sufficient heat retention. After raising the content of the liquid to a predetermined temperature using the hot water heater 9, the temperature is well maintained, and the set temperature is maintained using the insulating heater 8, but the total power consumption for keeping it warm is Saved.

On the other hand, the temperature control member does not operate when the temperature of the single bottom portion 7 is higher than the set temperature (for example, when the heater wrap portion of the single bottom portion 7 is energized without any liquid content due to dry cooking or an overturned condition). However, sensing is delayed due to the poor thermal conductivity of stainless steel, causing overheating.

For this reason, in the illustrated electric kettle, each temperature control member is
The windings of the heaters 8 and 9 are arranged away from the end (low temperature side) and concentrated near the heater heat generating part, so that the temperature rise in the single bottom part 7 when the heaters 8 and 9 generate heat can be detected as early as possible. There is.

The temperature-sensitive reed switch 15 is supported by a holding plate 17 in pressure contact with the bottom surface of the single bottom portion 7, and the temperature fuse 16 is fixed together with the holding plate 17 to a support leg 19 attached to the bottom surface of the single bottom portion 7 by screws 18. .

The thermostat 14 is attached with screws 21 to a mounting plate 20 that is directly attached to the lower surface of the single bottom portion 7.

The bottom panel 13 has a maintenance inspection window 22 in the center.
It is always closed by a cover plate 24 which is detachably supported by screws 23 on the support leg 19.

A plug fitting opening 25 is formed on one side of the bottom plate 13, and a plug 26 of a magnetic attraction type is fitted into this fitting opening 25.

At the upper end of the container body 1, a container opening 27 having a shape according to the purpose is attached and formed separately from the container body 1 from a synthetic resin material.

The container mouth 27 has a dish shape with a beak-like protrusion 27a on one side, a liquid supply port 27b to the container body 1 is opened at the center of the bottom, and a screw 28 is attached to the upper end of the container body 1 to connect the liquid to the container body 1. Mounted in position.

The screw 28 is inserted from the upper surface of the bottom of the container 27 and screwed into the mounting bracket 29 attached, for example, by spot welding, to the upper surface of the container 1 where the container opening 27 is placed, and the container opening 27 is attached to the container 1.
It is fastened to the top end.

A positioning sleeve 31 that fits with the outer circumferential step 30 at the upper end of the container 1 is provided at the seating portion of the container mouth 27 on the upper end of the container 1 . A tight-fitting sleeve 34 is provided that airtightly fits the upper end opening 32 of the container body 1 through a backing 33, and satisfies the positioning of the container opening 27 and the connection with the container body 1 in a leak-proof state. .

A lid 36 covering the container mouth 27 and equipped with a manual bellows pump 35 is pivotally attached 37 to the container mouth 27 on the side opposite to the beak-shaped protrusion 27 a. A lock lever 39 is provided on the opposite free end side, and elastically engages with a retaining portion 38 provided integrally with the container mouth 27 to close the lid 36.

40 is a pressing operation member of the pump 35. The liquid supply port 27 b of the container mouth 27 has an air supply passage 41 that communicates the discharge port 35 a of the pump 35 with the inside of the container body 1 when the lid body 36 is in the closed state, and an air supply passage 41 that connects the discharge port 35 a of the pump 35 with the inside of the container body 1 when the lid body 36 is in the closed state. A stopper body 43 having a spouting pipe 42 that guides the liquid content to be pushed out to the outside of the container body 1 when compressed air is sent into the container body 1 to pressurize the liquid content. is removably attached, and is pressed by the closed lid 36 to maintain airtightness with the vessel opening 32 through the backing 44, and between the air supply passage 41 and the pump discharge through the backing 45. The airtightness of the connection with the outlet 35a is also maintained.

The spouting conduit 42 has an overhanging portion 42 a that overhangs from the stopper 43 toward the container body side along the upper surface of the beak-like projection 27 a.
A spout 47 having an air vent pipe 46 for preventing splashing is provided on the top plate at the projecting end thereof, and opens downward from a through hole 48 at the bottom of the tip of the beak-shaped protrusion 27a.

Outside the container body 1, which is a metal vacuum double container itself, a glass transparent liquid level display pipe 49 is installed upright, and its lower end is connected to the single bottom portion 7 with an elbow 50, a horizontal pipe 51. A connection 54 is made from below via an elbow 52 and a vertical pipe 53 to communicate with the interior of the vessel body 1 .

The upper end of the display pipe 49 extends only the inner container 2 upward from the vacuum insulation space 4 forming part of the container body 1 to form the upper end frontage 32 of the container body.
It is connected 57 via an elbow 55 and a horizontal pipe 56 to the opening wall 32a, which serves as a single-layered container opening, and communicates with the inside of the container body 2 as well as the lower end.

Reference numeral 58 denotes a mounting bracket attached to the outer peripheral surface of the vessel 1 by spot welding or the like, and the display pipe cover 59 is attached to the two wings 58a floating from the outer circumferential surface of the vessel 1 using screws 60.
The cover 59 is directly attached to the container body 1 with screws.

If the elbows 50, 52, and 55 are made of a flexible material such as silicone rubber, it is possible to attach the display pipe 49 and the body 1.
It is advantageous in that it absorbs dimensional errors, allows a small amount of rocking, and cushions the impact on the display pipe.

Reference numeral 61 denotes a liquid level scale plate arranged behind the display pipe 49, and in the display window 59a of the cover 59, the pipe 49
The scale line 61a in the range where the liquid is present becomes horizontal due to the refraction of light, thereby indicating the water level within the vessel body 1.

A transparent synthetic resin plate 62 is attached to the display window 59a, and holds the scale plate 61 and the adhesive plate 61 by adhesion.

63 is a screw hidden plate. Since both the upper and lower ends of the display pipe 49 communicate with the inside of the container 1, it forms a passage through which liquid and air within the container 1 can move, and is the same as the inside of the container 1 without communicating with the outside. Adjust the liquid level and display it externally.

Since the display pipe 49 does not communicate with the outside, it does not serve as a release path for steam or heat, and even if the inside of the container 1 is pressurized, the liquid content will not leak or leak.

In the embodiments shown in FIGS. 4 to 6, a retaining hole 72 b of a retaining piece 72 a protruding from one side of an upper ring 72 that is force-fitted to an upper end flange 71 of a container body 1 and an upper end of a bottom plate 13 are shown. The liquid level display pipe 49 is inserted and held through the holding hole 13b of the holding piece 13a protruding on the − side, and the scale plate 61 arranged behind the pipe 49 is formed of a thin metal plate and is Mounting claws 61a and 61b protruding from each holding piece 72a and 13H
It is inserted into the small hole 72C913C and held by bending the protruding end.

The upper end of the pipe 49 is connected to an elastic horizontal pipe 74 which is bent into a piece shape and is elastically fitted 73 into the tight-fitting sleeve 34 of the container mouth 27, and is communicated with the inside of the container body 1.

In addition, the lower end is the side heel bow 50 of the single bottom part 7 and the horizontal pipe 5.
1 only through connection 54.

Reference numerals 72d and 13d are scale plate holding side walls that are integrally formed with the respective holding pieces 72a and 13a.

In the case shown in FIGS. 7 to 9, a pair of left and right mounting brackets 81 and 82 are fixed to the top and bottom of the outer circumferential surface of the container 1, and bent pieces 81a and 82a at their ends are formed on the back surface of the display pipe cover 59. The downwardly directed retaining piece 83 is engaged from above,
The cover 59 is directly attached to the first circumferential surface of the vessel, and the cover 59
has its upper end pressed against the container mouth 27 and the mounting bracket 81
．． The state of engagement with 82 is maintained.

The scale plate 61 is attached to the circumferential surface of the container body 1, and is conveniently made of adhesive vinyl tape.

The engagement between the cover retaining piece 83 and the mounting bracket bent pieces 81a and 82a may be made in the opposite direction to that described above, and the bottom plate 13 may be used to prevent the cover from being removed.

As shown in FIG. 10, a hook claw 83a is provided at the tip of the retaining piece 83, so that the engaging piece 83 and the bending piece 81
If they are elastically engaged with each other, the cover 59 can be firmly held just by their engagement.

According to this invention, the outer container forming the outer wall of the metal vacuum double container doubles as the outer casing of the pot container, and also serves as the indicator pipe cover for the liquid level indicator pipe installed outside the container. ,
Since it is directly attached to the outer surface of the container using a mounting bracket fixed to the outer surface, it is one of the bottle protection structures for vacuum double paper holes, and even for metal vacuum double container types. Mounting the display pipe cover eliminates the need for an exterior body used to provide a window, etc., and the opening work of the cover mounting window.Moreover, the cover can be easily attached directly to the outside of the vessel using the mounting bracket, which improves the structure. It also simplifies assembly.

Therefore, product costs are also reduced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment, Fig. 2 is an enlarged cross-sectional view of the main part, Fig. 3 is a front view of a part, and Fig. 4 is a longitudinal sectional view of the main part of another embodiment. Fig. 5 is an enlarged cross-sectional view of the main part, Fig. 6 is a slope view of a part of the scale plate, Fig. 7 is a longitudinal cross-sectional view of the main part of another embodiment, Fig. 8 is an enlarged cross-sectional view of the main part, FIG. 9 is a partially exploded slope view, and FIG. 10 is a partially enlarged vertical sectional view of a modified example. 1... Container body, 2... Inner container, 3...
...Outer container, 4...Vacuum insulation space, 49...
...Fluid level display pipe, 58...Mounting bracket,
58a...Wing, 59...Display pipe cover, 59a...Display window, 81.82...
...Mounting bracket, 81a, 82a...Bend piece,
83...Engagement piece, 83a...Hook claw.

Claims (6)

[Scope of utility model registration request] (1) On one side of the metal vacuum double container, which has a vacuum insulation space between the inner container made of a low thermal conductivity metal and the outer container made of a low thermal conductivity metal and also serving as an exterior body, A liquid level display pipe that communicates with the inside of the vessel is installed upright, and a cover with a display window that covers the liquid level display pipe is directly attached to the surface of the vessel using a mounting bracket that is fixed to the same surface. Metal vacuum double pot with liquid level indicator (2) The mounting bracket is a metal vacuum double pot with a liquid level display device according to claim 1 of the utility model registration claim, which is fixed to the surface of the container by sealing soldering or welding. (3) The cover is a metal vacuum double pot with a liquid level display device according to claim 1 or 2 of the utility model registration claim, wherein the cover is screwed to the mounting bracket. (4) The cover is a metal vacuum double pot with a liquid level display device according to claim 1 or 2 of the utility model registration claim, wherein the cover is held by engaging the hook part with the mounting bracket. (5) The metal vacuum double pot with a liquid level display device according to claim 4 of the utility model registration claim, wherein the engagement between the cover and the mounting bracket is an elastic engagement. (6) The metal vacuum double pot with a liquid level display device according to any one of claims 1 to 5 of the utility model registration claim, wherein the metal vacuum double body is made of stainless steel.