JP6138023B2 - Pressure adjusting device in hot water bottle and cap used in the same device - Google Patents

Description

  The present invention relates to a pressure regulator for a hot water bottle comprising a hot water bottle body and a cap attached to the pouring spout, and a cap used in the same.

  Hot water bottles are widely used energy-saving heating products. Although the inventor has been engaged in the development, manufacture and sale of plastic hot water bottles for many years, the problem of deformation due to the undesirable use of hot water bottles has always been in mind. Since hot water bottles are used by injecting hot water, the effect of the hot water being cooled becomes a problem. This is because, when there is almost no space above the hot water surface in the hot water bottle into which hot water has been poured, even if the hot water cools, the effect of appearing on the hot water bottle body is small, but the larger the space, the greater the effect of shrinkage.

  7 and below, a is a hot water bottle main body, b is a pouring spout, c is a cap, d is unevenness on the upper surface of the main body, e is unevenness on the lower surface of the main body (the unevenness d and e are strength improvements). It is well known that it has been established since the era of metal products.) Similarly, f is a hot water surface, g is a space, and h is hot water. FIG. 7 is a state immediately after the hot water h is poured for about the eighth minute, and the hot water bottle main body a is not substantially deformed (original shape). ).

If hot water at 100 ° C. is reduced to 50 ° C. overnight, the saturated steam pressure is reduced from 1.0 to 0.12 atm, and the density is also from 0.598 to 0.080 (g / 1000 cm ^{3 from the} science chronology). As a result, the hot water bottle main body a can not withstand the decrease in internal pressure and dents, causing deformations i and j as shown in FIG. Note that FIG. 8 is an example. For example, when only about the fifth minute is inserted, it is deformed as shown by a chain line in FIG. It may be deformed. However, the deformations i and j return to the original form (see FIG. 7) when hot water is injected again, and can continue to be used, so there is no problem immediately. It should be noted that the deformation and restoration are repeated indefinitely. .

  That is, if the hot water bottle body is repeatedly expanded and contracted by cooling by hot water injection, the hot water bottle body made of a plastic material is fatigued, and in the worst case, there is a possibility of breakage. In order to cope with such a situation, the applicant has developed a hot water bottle that does not deform even if it is used at the eighth water level. Japanese Patent Application Laid-Open No. 2005-245773 is a donut-shaped outer shape of the hot water bottle body and a circular cross-sectional shape that can withstand the maximum degree of deformation, and products that implement this have gained popularity. Of course, it can withstand use far below the eighth, but there is no guarantee that it will never break. In addition, there is a plan to provide a hot water amount line in the hot water bottle main body as in registered utility model No. 3150467. However, the problem is that you don't know if you are using the correct amount of water.

JP-A-2005-245773 Registered utility model No. 3154667

  The present invention has been made in view of the above circumstances, and its object is to make it possible to use the hot water bottle safely without being easily deformed even if it is used without the correct amount of hot water being protected. . Another object of the present invention is to provide a cap that can adjust the pressure of the hot water bottle by replacing the cap in the hot water bottle comprising a hot water bottle body and a cap attached to the pouring spout.

In order to solve the above-mentioned problems, the present invention relates to a cap that is attached to a pouring port of a hot water bottle main body, a cap main body that is attached to the pouring port by screw means, and a cap that is attached to the cap main body. There is a plug mounting part inside, the plug and the plug mounting part have a vent hole formed in each, and further, venting means made of a material that allows vapor to pass but not hot water does not pass through the plug and plug mounting In order to attach using the plug, the plug is tightly fitted to the plug mounting portion, and the venting means is sandwiched between them by fitting the plug to the plug mounting portion. The internal vent is provided with a means that it is formed only in a plug or a plug mounting portion facing the space inside the hot water bottle body .

  The pressure adjusting device according to the present invention acts so as to eliminate the pressure difference inside and outside the hot water bottle as needed. For this purpose, at least one vent hole is provided in an appropriate portion of the hot water bottle, and the vent hole is covered with the vent means. A plurality of ventilation holes can be provided, and can also be provided on the cap and the hot water bottle body.

  The present invention includes a cap for use in a hot water bottle pressure regulator. The cap is provided with at least one vent hole on the outer side of the cap mounting portion to be attached to the pouring spout and using the vent means made of a material that allows steam to pass but does not allow hot water to pass, Take the configuration of covering. The cap incorporates a pressure adjusting device, which makes it possible to combine the cap incorporating the pressure adjusting device with a hot water bottle body having a different shape or the like.

  It consists of a cap body that attaches the cap to the pouring spout, and a plug that is attached to the part located outside the attachment part. The cap body is provided with the above-mentioned stopper mounting part, and each of the stopper and the stopper mounting part. A configuration in which a vent hole is formed in the base plate and a vent means is disposed between the plug and the plug mounting portion is preferable for the present invention. In addition, outward refers to the direction of the outside centering on the hot water bottle main body in a state where the hot water bottle main body is mounted.

  Further, the cap has a closed surface for closing the pouring port in the outer portion, a vent hole is formed in the closed surface of the cap, and a ventilation means for covering the vent hole is provided at least inside or outside the closed surface. Configuration is also preferred for the present invention. By comprising in this way, the cap used for the pressure regulator of a hot water bottle is provided with the fewest number of parts.

  Since the present invention is configured as described above and acts so as to eliminate the pressure difference between the inside and outside of the hot water bottle as needed, even if the hot water bottle is used while the correct amount of hot water is not protected, There is an effect that it can be used safely for a long time without deformation. Further, according to the present invention, a hot water bottle comprising a hot water bottle main body and a cap attached to the pouring spout can be provided with a cap capable of adjusting the pressure of the hot water bottle by replacing the cap.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows the appearance of a hot water bottle to which a pressure control device according to the present invention is applied. The hot water bottle comprises a hot water bottle body 10 and a cap 12 attached to the pouring spout 11 thereof. Conditions such as the resin material used for the hot water bottle main body 10 having such a basic configuration, the main body structure, the capacity of the hot water to be injected, and the like may be the same as those used so far.

The illustrated hot water bottle is molded by a blow molding method using a parison, has a flat shape and a flat shape of an oval mold, and has a ridge 13 along the mold closing surface of the mold , an upper surface and a lower surface at the periphery. , 14 and 15 , and a hand or the like located at the upper end in an upright state. The hot water bottle is a so-called standing hot water bottle (registered trademark) having a flat bottom surface 16 in order to be self-supporting, and is located near the lower end of the hot water bottle so as to help discharge hot water by the self-supporting hot water bottle body 10. A pouring gate 11 is arranged.

  In the embodiment, in order to prevent the hot water from being cooled due to the use of the hot water bottle to reduce the internal pressure and the hot water bottle main body 10 from being deformed, at least one ventilation hole 19 through the hot water bottle is provided in an appropriate portion of the hot water bottle, An example of a pressure adjusting device 20 that covers the vent hole 19 using the venting means 21 is shown (FIG. 2).

  In this embodiment, the pressure adjusting device 20 is provided in the cap 12, and the cap 12 is provided with a female screw portion 18 that is screwed with a male screw portion 17 provided in the pouring port 11 of the hot water bottle main body 10 as a mounting means. ing. At least one vent hole 19 is provided on the outer side of the female screw portion 18 that is the mounting portion of the cap 12 so as to allow the steam directed to the vent hole 19 to pass therethrough but not to allow hot water to pass therethrough. The pressure adjusting device 20 is configured by covering the vent hole 19 using the.

Further, the present invention will be described with reference to FIGS.
In the pressure adjusting device 20 of Example 1 shown in FIG. 3, the cap 12 includes a cap body 22 having a female threaded portion 18 of the cap that is mounted on the pouring port 11, and a portion that is located outward from the female threaded portion 18 that is the mounting portion. The cap body 22 is provided with a mounting portion 24 for the plug 23, and at least one vent hole 19-1, 19-2 is provided in each of the plug 23 and the plug mounting portion 24. A portion is formed, and the ventilation means 21 is disposed between the plug 23 and the plug mounting portion 24.

  In Example 1, the cap main body 22 of the cap 12 is provided with a plug mounting portion 24 in a concave shape in the central portion, and a vent hole 19-2 is formed in the central portion of the bottom surface. Further, the plug 23 is closely fitted with the plug mounting portion 24 like a kind of plug, and the peripheral wall portion of the plug 23 and the plug mounting portion 24 is provided with a convex portion and a concave portion that are fitted to each other. The fitting means 25 is provided as a stopper, thereby maintaining the integrity. The ventilation means 21 is disposed on the bottom surface of the plug mounting portion 24 and is fixed by means such as adhesion to the bottom surface or pinching between the bottom surface and the bottom end of the plug.

  In the figure, reference numeral 26 denotes a packing, which is disposed outside the packing stopper on the top surface of the cap 12 and is in contact with the upper end of the pouring spout 11 to keep a sealed state. Although the vent holes 19-1 and 19-2 are illustrated in different calibers, which caliber is selected is a matter of choice and should not be interpreted restrictively. In addition, about the number of ventilation holes, as shown in the figure, it is not limited to one in the center, but can be provided in two places or three or more places.

  Next, the pressure adjusting device 30 of Example 2 will be described with reference to FIG. In the case of the apparatus 30 of Example 2, the cap 12 is composed of a cap body 27 having a female threaded portion 18 of the cap to be attached to the pouring spout 11 and a plug 28 attached to a portion located outside the female threaded portion 18. This structure is the same as that of Example 1. However, it differs from Example 1 in that the plug mounting portion 29 is disposed on the top surface inside the cap body 27. The cap main body 27 and the plug 28 each have at least one vent hole 19-1, 19-2, and the vent means 21 is disposed between the plug 28 and the plug mounting portion 29.

  In the apparatus 30 of Example 2, the plug attachment portion 29 is provided in a cylindrical shape at the center of the top surface inside the cap body, and a ventilation hole 19-1 is formed at the center of the top surface. The plug 28 is closely fitted to the plug mounting portion 29 like a kind of plug, and the vent hole 19-2 is formed at the center of the bottom surface of the plug 28. The plug 28 and the plug mounting portion 29 are integrally coupled by mutual fitting of fitting means 31 including a convex portion and a concave portion provided on the peripheral wall portion. The ventilation means 21 is disposed on the top surface of the plug mounting portion 29 and is fixed by means such as adhesion to the top surface or pinching between the top surface and the top end of the plug.

  Further, the pressure adjusting device 33 of Example 3 will be described with reference to FIG. The cap 12 has an outer closed surface 32 that closes the pouring port 11. At least one vent hole 19 is formed in the closed surface 32, and the vent means 21 that covers the vent hole 19 is provided on the top of the cap. The surface is provided inside the closed surface 32. Reference numeral 34 denotes a frame portion made of a protrusion, and the ventilation means 21 is attached to the inside thereof by means such as adhesion. Since the other structure may be the same as that of the said Example 1, a code | symbol is used and detailed description is abbreviate | omitted.

  FIG. 6 shows the pressure adjusting device 35 of Example 4, and the cap 12 is a part where the outer closing surface 32 closes the pouring gate 11 as in Example 3, and at least the vent hole 19 is formed in the closing surface 32. A ventilation means 21 that is formed at one place and covers the ventilation hole 19 is provided outside the closing surface 32, that is, on the outer surface of the cap. The ventilation means 21 is attached to the inside of a frame portion 36 made of a protrusion on the outer surface of the cap. Since other configurations may be the same as those in Example 1, the reference numerals are used.

  Since the present invention is configured in this way, as shown in FIG. 2, if hot water H is poured only about the eighth minute and the space G is large above the hot water surface F, the space G The high internal pressure is discharged to the outside by the aeration means 21 made of a material that allows steam to pass but not hot water, and the pressure in the space G is adjusted to be slightly higher than atmospheric pressure. Although the internal pressure of the space G gradually decreases as the temperature of the hot water H decreases due to the subsequent heat release, in this case, since the outside air flows into the space G through the ventilation means 21, the internal pressure does not excessively decrease. Therefore, the pressure change due to heating and cooling by hot water is kept to a minimum, and the pressure drop is not so great that the hot water bottle main body 10 is deformed.

  The ventilation means 21 is made of a material that allows steam to pass through but does not allow hot water to pass through, as described above. Since such a material is known as a waterproof and moisture-permeable material, it is possible to select and apply an appropriate material that can withstand a temperature of 100 ° C. among the waterproof and moisture-permeable materials. As a raw material, what is comprised from PTFE (polytetrafluoroethylene), PU (polyurethane), PETP (polyethylene terephthalate) etc. can be mentioned, for example. Although the size of the ventilation means 21 is greatly illustrated with respect to the ventilation holes 19, 19-1, 19-2, this is merely an example in each of the above examples and does not indicate a specific dimensional relationship. Therefore, it can be selected arbitrarily according to conditions such as the provision form of the waterproof and moisture-permeable material and the diameters of the vents 19, 19-1 and 19-2.

  In order to prevent the hot water from being cooled due to the use of the hot water bottle, the internal pressure is lowered and the hot water bottle is deformed, the pressure adjusting device of the present invention has vent holes 19, 19-1 and 19-2 through the hot water bottle inside and outside the hot water bottle. At least one place is provided at an appropriate site. In each example of the embodiment, only an example in which the vent holes 19, 19-1, and 19-2 are provided in the cap 12 is shown. However, for example, the vent hole 19 can be provided in the side surface of the pouring spout 11 screwed into the cap 12 or the base of the pouring spout of the hot water bottle main body 10, and it goes without saying that the cap 12 is not limited thereto.

It is a perspective view which shows an example of the pressure regulator in the hot water bottle which concerns on this invention. It is sectional drawing which follows the II-II line | wire of FIG. It is sectional drawing of the cap of Example 1 used for the pressure regulator in the hot water bottle which concerns on this invention. Similarly it is sectional drawing of the cap of Example 2. FIG. Similarly it is sectional drawing of the cap of Example 3. FIG. Similarly it is sectional drawing of the cap of Example 4. FIG. It is sectional drawing which shows the state which has not produced the deformation | transformation in the conventional hot water bottle. It is a side view which similarly shows an example after a deformation | transformation.

DESCRIPTION OF SYMBOLS 10 Hot water bottle main body 11 Pouring spout 12 Cap 13 Projection 14, 15 Concavity and convexity 16 Bottom surface 17 Male thread part 18 Female thread part 19, 19-1, 19-2 Vent hole 20, 30, 33, 35 Pressure regulator 21 Ventilation means 22, 27 Cap body 23, 28 Plug 24, 29 Plug mounting portion 25, 31 Fitting means 26 Packing 32 Blocking surface 34, 36 Frame

Claims (2)

A cap that is attached to the pouring spout of the hot water bottle body,
A cap body having a peripheral wall portion to be attached to the pouring gate by screw means;
The plug has a plug attached to the cap body, the plug has a concave shape in cross-sectional view , and has a space configured by the concave shape in cross-sectional view, and a vent hole whose diameter is smaller than the space, closely mate with the peripheral wall portion,
The cap body has a plug mounting portion having the peripheral wall portion outside or inside thereof, and has a vent hole formed in the plug mounting portion ,
Furthermore, in order to attach a ventilation means made of a material that allows steam to pass but not hot water using the plug and the plug mounting portion,
The plug fits tightly with the plug mounting part, and by fitting the plug to the plug mounting part, the ventilation means is sandwiched between them ,
The space is constituted by a plug having a concave shape in the cross-sectional view and having a space constituted by the concave shape in the cross-sectional view ,
The cap used for the pressure regulator of a hot water bottle characterized in that the internal ventilation hole is formed only in a stopper or a stopper mounting portion facing the space inside the hot water bottle body. The cap main body has a packing stopper on the inner top surface, and has a configuration in which a packing is provided on the outer side of the packing stopper to maintain a sealed state in contact with the upper end of the hot water inlet of the hot water bottle main body. Cap used for hot water pressure regulator.

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