JP5037313B2 - Warming pot - Google Patents

Description

  This invention is an air-pump type heat retaining material that presses a push button to contract a bellows, discharge air into the container to pressurize the container, and send the liquid in the container to the outside through the pumping pipe by the pressurization. It is about the pot.

The basic structure of the heat-insulating pot is that a lid that opens and closes the opening of the container is swingably provided. The lid has an air pump mechanism, and an inner plug that fits into the container opening on the lower surface of the lid on the lower surface. Is provided in a protruding manner.
The air pump mechanism contracts the bellows by pushing the push button, discharges air into the container and pressurizes the container, and the liquid in the container is poured out of the container through the pumping pipe by the pressurization. It is common to send it out through the mouth.

In addition, the inner plug is integrated with the lid (see FIG. 1 of Patent Document 1, FIG. 1 of Patent Document 2, FIG. 6 of Patent Document 3, etc.), or a separate one (Patent). (Refer to FIG. 1, FIG. 3, etc. of the literature 4). In any case, the inner plug is formed with a discharge passage for the air communicating from the inside of the bellows into the container, and the air is discharged into the container through the discharge pipe (see Patent Document 1). (See FIG. 1, reference numeral 18, FIG. 3, reference numeral 30 b of Patent Document 3). If the discharge pipe is formed in the inner plug as described above, a heat insulating material can be put in the inner plug, and the heat retaining performance can be improved.
Japanese Utility Model Publication No. 58-194754 Japanese Utility Model Publication No. 64-31049 JP 09-299252 A JP-A-10-179422

  However, when this type of air pump type heat-insulating pot falls, the liquid in the container flows into the bellows through the discharge pipe, and the liquid in the bellows flows into the intake valve (see FIGS. 1 to 43, 46 in FIG. 1). Water leaks to the outside via the paragraph 0019).

On the other hand, in this type of heat-insulating pot, the amount of outflow from the inside of the bellows etc. to the outside of the heat-insulating pot within a certain time after falling is set to be a certain amount or less. The condition is met.
However, it is preferable that the amount of liquid outflow at the time of the fall is as small as possible from the viewpoint of further improving the safety.

  In addition, since air can freely move between the bellows and the container via the discharge pipe, the vapor rising from the liquid in the container easily enters the bellows and causes condensation. In order to secure the sanitary condition in the bellows, it is preferable that condensation is as little as possible.

  In view of this, an object of the present invention is to reduce the amount of liquid flowing out during the overturn while preventing heat from entering the bellows while achieving heat insulation with an inner plug.

  In order to achieve the above-mentioned object, the present invention provides a water leakage of the liquid that has entered the bellows to the outside of the heat-insulating pot, with the air discharge pipe as the vertical direction and the opening inside the container of the discharge pipe as the horizontal direction. And the suppression of the vapor | steam entrance into a bellows was aimed at.

If the opening inside the container of the discharge pipe is oriented in the horizontal direction no matter which direction the heat-insulating pot falls, the liquid in the container will fall in its overturning direction (the axial direction of the pot (vertical direction)). In order to flow into the discharge pipe, the flow direction must be changed, and the amount that enters the discharge pipe is smaller than when the opening that can flow in without changing the flow is directed downward. For this reason, the amount of inflow into the discharge pipe in a fixed time from the initial fall of the discharge pipe with the opening facing sideways is smaller than that of the conventional downward opening of the opening. If the amount of liquid flowing into the discharge pipe is reduced, the amount of liquid flowing into the bellows is naturally reduced, and the amount of outflow at the time of falling is reduced.
In addition, the vapor usually rises directly above, and if the opening is in the lateral direction, the amount of vapor entering the discharge pipe is smaller than that in the case where the opening is directed downward.

As a configuration of the present invention, a lid that opens and closes the opening of the container, and presses a push button incorporated in the lid to contract the bellows to discharge air into the container and pressurize the container, A heat retaining pot comprising an air pump mechanism that sends out liquid in the container to the outside of the container through a pumping pipe by the pressurization, and is fitted into the opening of the container on the lower surface of the lid, and a heat insulating material is put inside. An inner stopper is provided in a protruding manner, and the inner stopper is formed with a cutout portion having an opening only on the side surface and the lower surface through which the pumping pipe passes, and the discharge pipe is provided in the cutout portion in the vertical direction, and the container of the discharge pipe A configuration in which the inner opening is in the horizontal direction can be employed.
In this configuration, the wall in the container forms the notch of the inner plug even if the liquid in the container flows in the overturning direction (the axial direction of the pot (vertical direction)) as it falls, while insulating the inner plug. Thus, the flow can be guided so as to hit the lower end of the outer surface of the pipe wall of the discharge pipe, and a series of flows flowing into the opening inside the container of the discharge pipe after changing the direction of the flow direction to the side can be generated.

  The container may be a vacuum double structure or a single structure. In addition, if possible, the container can be heated or kept warm by electric heating.

As an opening mode inside the container of the discharge pipe, it is possible to simply close the lower end of the discharge pipe in the vertical direction (with a bottom) and form a hole in the lower side surface to make a horizontal opening, The inflow degree of liquid or the like in the container is suppressed when the lower part of the discharge pipe is bent in the horizontal direction and the opening inside the container is set in the horizontal direction.
In order for the liquid to enter the bellows due to the presence of the laterally bent part, the flow must be changed twice when changing into the opening of the discharge pipe and the flow at the bent part of the discharge pipe. This is because this change becomes the flow resistance of the liquid and the flow-in is suppressed. Moreover, it is difficult for steam to enter the sideways opening for the reason described above.

Moreover, it is preferable that the opening inside the container of the discharge pipe is directed to the spout provided so as to protrude from the container.
Since a typical heat retaining pot has a spout protruding from the front side of the container, when the heat retaining pot falls, the spout is often upward or slightly inclined from the top. For this reason, if the opening of the discharge pipe faces the direction of the spout, depending on the amount of liquid in the container, the liquid level often does not reach the opening. If not, the liquid entering the discharge pipe This is because the amount is also reduced.

At this time, the pumping pipe may be on a line segment connecting the pouring spout and the discharge pipe, and the opening of the discharge pipe may be directed to the pumping pipe.
Normally, the pumping pipe rises up to the front side of the container and is led to the spout, and the pumping pipe is located in front of the opening of the discharge pipe, so that the flow of liquid etc. is blocked by the pumping pipe, and the liquid etc. is opened. From entering the discharge pipe.

As a means for suppressing the flow of liquid or the like into the discharge pipe, in addition to making the opening in the horizontal direction, the discharge pipe opening is narrowed or a resistor is provided in the opening to introduce the liquid into the discharge pipe. It is conceivable to increase the inflow resistance of liquid or the like. The degree of narrowing of the opening and the shape, number and position of the resistor are appropriately set as long as there is no hindrance to the liquid delivery by the air pump mechanism through experiments or the like. This resistor can also be a grid. Similarly, the lattice shape is appropriately set as long as the aperture ratio does not hinder air feeding by the air pump mechanism.
Moreover, if it is made into a grid | lattice form, vapor | steam dew condensation water will make it easy to form a water film in a lattice hole with surface tension, and it can also be expected that this water film prevents the invasion of steam.

  Since the present invention is configured as described above and suppresses the inflow of liquid or water vapor into the discharge pipe, it is possible to suppress water leakage when the heat-insulating pot falls, and to prevent condensation within the bellows. Can be further suppressed.

  As shown in FIGS. 1 to 3, this heat-insulating pot is provided swingably on a hinge receiver 5 formed on a shoulder member 4 attached to a vacuum double type stainless steel container 3 with a lid 1 having a hinge 2. Is. The lid 1 is provided with a lid opening button 6 for releasing the opening / closing lock.

  As shown in FIGS. 4 and 5, the lid body 1 has an upper lid 7 and a lower lid 8, and a push button 9, a pressing member 10, a bellows cap 11, and a bellows are placed in both lids 7 and 8. 12 and a bellows base 13 are incorporated. This air pump mechanism pushes the push button 9 against the urging force of the spring 14 to contract the bellows-like bellows 12 via the pressing member 10 and the bellows cap 11, and the air in the bellows 12 is discharged from the discharge pipe. 15 is discharged into the container 3. The inside of the container 3 is pressurized by the discharge of this air, and the liquid in the container 3 is sent out of the heat insulation pot through the pumping pipe 16 and the water supply pipe 17 inserted into the container 3 by this pressurization.

  As shown in FIGS. 5 and 6, the push button 9 is provided with a circumferential engagement portion 18 on the outer peripheral surface thereof, and is provided coaxially with the push button 9 and rotatable about the axis. The lock ring 19 is formed with a protrusion 20 that is detachable from the engaging portion 18. When the lock ring 19 is rotated around the axis to engage the engaging portion 18 and the protrusion 20 (see FIG. 6A), the push button 9 cannot be pushed, while the lock ring 19 is When the engagement is released by rotating around the axis (see FIG. 6B), the push button 9 can be pushed.

  On the lower surface of the lid 1, an inner plug 22 having a circular cross section that fits into the circular opening 21 having a reduced diameter of the container 3 is integrally provided. The inside plug 22 is filled with a heat insulating material 23 (see FIG. 1).

  The inner plug 22 may be designed to fit into the opening 21 of the container 3, but as shown in FIG. 1, a gap is provided between the inner plug 22 and the opening 21. The lid 1 can be easily opened and closed. In addition, since the airtightness between the inner plug 22 and the container 3 is ensured by the packing 24 provided on the inner plug 22, there is no possibility that the heat retaining property of the heat retaining pot is lowered by providing the gap. (See FIG. 1).

As shown in FIG. 7, the discharge pipe 15 provided in the vertical direction of the lid 1 is bent at a right angle toward the front of the lid 1 at the bottom of the discharge pipe 15.
Since the pouring spout 25 of this heat insulating pot is provided so as to protrude in one direction from the peripheral side of the container 3, the pouring spout 25 is directed upward or slightly inclined from the upward direction (around the vertical axis). It often lies in a slightly rotated state. For this reason, when the discharge pipe 15 is bent forward as described above, the liquid level often does not reach the opening of the discharge pipe 15 if the amount of liquid in the container 3 is about half or less of the capacity of the container. . Thus, if it does not reach an opening, a liquid will not enter into the discharge pipe 15, but the outflow can be suppressed.

As shown in FIG. 8, a mesh member 26 as a resistor can be provided in the opening of the discharge pipe 15. While this mesh member 26 prevents the liquid in the container 3 from entering the discharge pipe, it can smoothly pass the air fed from the bellows side, which has a much higher fluidity than this liquid. For this reason, the leakage of the liquid can be effectively suppressed without hindering the function of the air pump mechanism.
Further, the mesh member 26 shown in FIG. 8 is formed with holes on the surface in such a shape that vapor condensation water adhering to the mesh member 26 can form a water film in the lattice holes due to surface tension. Is prevented.

  As the resistor, various other shapes such as protrusions and valve bodies can be adopted as long as the function of the air pump mechanism is not hindered.

  In this embodiment, as shown in FIGS. 1 and 9, a safety valve 27 is provided in the middle of the water supply pipe 17, and a safety valve weight 28 is accommodated in the safety valve 27. When the heat-insulating pot is overturned, the safety valve weight 28 is guided in the shape of a mortar of the safety valve 27, fits into the valve seat 29, and closes the outlet 30 of the safety valve 27 by its own weight. During normal flow, the safety valve weight 28 is in a predetermined position (the position shown in FIG. 1), and the liquid flowing in from the inlet 31 flows out from the outlet 30 after filling the safety valve 27. .

  When the liquid flows into the safety valve 27, if the flow velocity from the inlet 31 is large, the strong liquid flow flows into the valve seat from the side of the inlet 31 and the side of the valve seat passes through the inlet. There is a concern that 31 and the flow flowing in from the opposite side collide in the valve seat, the safety valve weight 28 is lifted, and an erroneous valve closing state occurs. In order to prevent this, a rib 32 is provided inside the safety valve 27, and the flow rate of the liquid flowing in the rib 32 is weakened (see the arrow in FIG. 9) to suppress the lifting of the safety valve 27. The number, size, arrangement, and the like of the ribs are appropriately determined in consideration of the amount of liquid flowing in.

  In addition, the water supply pipe 17 communicating with the outlet 30 of the safety valve 27 is provided with a safety valve ball 33, and the safety valve ball 33 closes the water supply pipe 17 by its own weight when the heat-insulating pot falls and suppresses the outflow. As described above, if the rib 32 is formed, the flow that flows out from the outlet 30 to the safety valve ball 33 side is weakened. As a result, it is possible to prevent an erroneous valve closing state due to the safety valve ball 33 being lifted. it can.

  By providing both the safety valve weight 28 and the safety valve ball 33, a high outflow prevention effect can be exhibited. However, in order to simplify the outflow prevention structure, only one of the safety valve weight 28 and the safety valve ball 33 is employed. It can also be configured. This is because either of them can exert the effect of preventing the outflow or slowing down the outflow speed.

  The safety valve, the safety valve weight, and the safety valve ball can be applied not only to the heat retaining pot according to the present invention but also to other technical fields where the use of the safety valve is assumed.

Side surface sectional view which shows the principal part of the heat retention pot which concerns on this invention Side surface partial sectional view showing the main part of the lid of the heat insulation pot The perspective view which shows attachment to the container of a lid The perspective view which shows the structure of an air pump mechanism The perspective view which shows the structure of the lock mechanism of a push button It is a top view which shows the lock mechanism of a push button, (a) at the time of lock, (b) at the time of lock release Lower perspective view of the lid It is a figure which shows a mode that the mesh member was provided in the discharge pipe, Comprising: (a) is front sectional drawing of an example, (b) is a side view of an example, (c) is a side view of another example. Perspective view of safety valve

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover body 2 Hinge 3 Container 4 Shoulder member 5 Hinge receptacle 6 Cover body release button 7 Upper cover 8 Lower cover 9 Push button 10 Pushing member 11 Bellows cap 12 Bellows 13 Bellows base 14 Spring 15 Discharge pipe 16 Pumping pipe 17 Water supply pipe 18 Joint part 19 Lock ring 20 Projection line 21 Opening part 22 Inner plug 23 Heat insulating material 24 Packing 25 Spout 26 Mesh member 27 Safety valve 28 Safety valve weight 29 Valve seat 30 Outlet 31 Inlet 32 Rib 33 Safety valve ball

Claims (4)

The lid (1) that opens and closes the opening of the container (3), and the push button (9) incorporated in the lid (1) is pressed to contract the bellows (12), and the air in the container (3) An air pump mechanism including an air pump mechanism that pressurizes the inside of the container (3) and supplies the liquid in the container (3) to the outside of the container (3) through the pumping pipe (16) by the pressurization. A warming pot,
An inner plug (22) that fits into the opening (21) of the container (3) on the lower surface of the lid (1) and has a heat insulating material (23) inside is provided to protrude, and the inner plug (22) the riser pipe (16) forming a notch on the side surface and the lower surface only opening through which, provided with ejection decane (15) in the vertical direction in the cutout portion, the front from the periphery of the container (3) spout projecting in one direction (25) is provided, the upper Symbol riser pipe (16) is in the on line segment connecting the spout (25) and the discharge pipe (15), the upper Symbol discharge pipe (15) insulation pot, characterized in that the lower part is bent forward toward the container (3) above spout inside the opening (25) and riser pipe (16). Insulation pot according to claim 1, characterized in that an increased liquid and inflow resistance of steam into the discharge pipe container (15) (3) the discharge pipe narrows the inside of the opening (15). The heat retaining pot according to claim 1 or 2, wherein a resistance body is provided on the inner surface of the opening inside the container (3) of the discharge pipe (15) to increase inflow resistance of liquid and vapor. The heat retaining pot according to claim 3 , wherein the resistor is formed in a lattice shape and covers the opening inside the container (3) of the discharge pipe (15).

Images