JP2007186970A - Water-conserving instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-conserving instrument which can maintain the momentum of water even if a water amount is reduced at the time of water saving without causing impairment to user's feeling of use. <P>SOLUTION: The water-conserving instrument is provided with a body (2), an axial center (3), a flange (4), a propeller shaft (5), and a plurality of propellers (6). The body (2) has a plurality of through waterways (7) inside, and the axial center (3) is extended and projected along the axis of the body (2). Then the flange (4) integral with the body (2) is projected in the direction which is orthogonal to the axis, and the propeller shaft (5) the interior of which is hollow, is inserted to the axial center (3) by free rotation. The propellers (6) which is integrally molded with the propeller shaft (5), has a spiral curved surface which is nearly S-shaped in cross section. Then a high-pressure stream of water the flow of which is reduced by the through waterways (7) hits the plurality of propellers (6) one after another, and thus the propellers (6) rotate continuously at a high speed. Because of the rotation of the propellers (6), high-speed rotation thrust is exerted on the stream of water, and the momentum of the stream of water is increased. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a water-saving device, and more particularly, to a water-saving device that maintains a water flow even when the amount of water is reduced by narrowing a water passage when water is saved. The present invention further relates to a shower head using the water-saving device and various water jetting devices using the principle of the present invention.

  In recent years, protection of water resources has been socially required as part of global environmental protection. Especially in urban areas, water charges are high, so we are striving to save water by making various efforts, especially in large public facilities such as hotels, hospitals, and office buildings.

The easiest conventional method for saving water is to reduce the amount of water by installing a water-saving piece in the water flow path. However, if the amount of water is reduced, the water will weaken, and the user will feel uncomfortable, such as uncomfortableness, for example when showering or washing hands. Therefore, for example, as in Patent Document 1, many water-saving tops try to alleviate the feeling of water reduction by variously designing the flow path.
Patent Publication 9-95985

  However, in Patent Document 1 described above, the angle of the plurality of flow paths in the water-saving coma is changed to twist the water flow to alleviate the sense of volume reduction. However, since the water discharge itself is weak, it is still unsatisfactory. Feeling and use feeling must be spoiled. Many other water-saving devices have been proposed and filed for similar purposes, but all have similar problems and are not sufficient solutions.

  Accordingly, an object of the present invention is to provide a water-saving device that maintains the water force even when the amount of water is reduced during water-saving, and does not impair the user's feeling of use.

    In order to solve the above problems, according to an embodiment of the present invention, a main body (2) having a plurality of through water channels (7) therein, and an axial center (3) extending and projecting along the central axis of the main body , A flange (4) that is integral with the main body and protrudes in a direction perpendicular to the central axis, a propeller shaft (5) that is hollow inside and inserted into the shaft so as to be freely rotatable, and an integral molding with the propeller shaft (5) And a plurality of propellers (6) having a substantially S-shaped spiral curved surface, and the main body (2) is further fitted with an extension (8) of the axis (3) along the central axis. The shaft center (3) further includes a stopper portion (11) for preventing the propeller shaft (5) from coming off, and a high-pressure water flow constricted by a plurality of through water channels (7). Successively hits the plurality of propellers to rotate the propeller (6) continuously at high speed. Providing water saving device (1), characterized in that to increase the momentum of the water flow by adding thrust to the water flow by.

  It is preferable that the water-saving device (1) has a plurality of propellers (6) of three, forms an angle of 120 degrees with each other, and has a plurality of through water channels (7) of six.

  Further, as another application example of the water-saving device, when the water-saving device is attached, for example, near the outlet of the fountain device, a fountain device that increases the momentum and reach of the fountain can be provided.

  Furthermore, when the water-saving device is attached, for example, near the discharge port of the fire hose, a fire fighting device capable of increasing the momentum and reach of water discharged can be provided.

  A high-pressure water stream constricted in a plurality of through water channels hits a plurality of propellers one after another, and the propeller is continuously rotated at a high speed, and thrust is added to the water stream by the rotation to increase the momentum of the water stream. The original pressure can be efficiently transferred to the water discharge, and rotation can be added to the water discharge, so that the water momentum can be maintained even if the amount of water decreases due to water saving.

  FIG. 1 is a perspective view of a water-saving device 1 according to the present invention, and FIG. 2 is a cross-sectional view of the water-saving device 1. FIG. 3 shows a method for attaching the water-saving device 1 between the shower head 14 and the hose 15.

  As shown in the figure, a water-saving device 1 according to the present invention includes a main body 2, an axial center 3 that extends and projects along the central axis of the main body 2, and a flange that is integral with the main body 2 and projects in a direction perpendicular to the central axis. 4, a propeller shaft 5 that is hollow inside and inserted into the shaft 3 so as to be freely rotatable, and a plurality of propellers 6 that are integrally formed with the propeller shaft 5 and have a spiral curved surface having a substantially S-shaped cross section. Further, a plurality of through water channels 7 are provided in the main body 2 around the central axis. Further, an insertion hole 9 is provided along the central axis of the main body 2 for inserting an extension 8 whose axis 3 extends downward in the figure. Further, the packing 10 is arranged around the main body 2 on the flange 4. Furthermore, the shaft center 3 has a stopper portion 11 for preventing the propeller shaft 5 from coming off. Spacers 12 and 13 that make the rotation of the propeller 6 smooth are provided between the propeller shaft 5 and the stopper portion 11 and between the propeller shaft 5 and the main body 2.

  Here, the propeller shaft 5 and the propeller 6 are light and strong, for example, molded from plastic, and the packing 10 is made of synthetic rubber. Other parts are preferably stainless steel.

  In assembling the water-saving device 1, first, the propeller shaft 5 is passed through the shaft center 3, and the shaft center 3 is inserted into the insertion hole 9 of the main body 2 while the propeller shaft 5 is passed. Then, the main body 2 and the shaft center 3 are fixed by caulking the tip portion of the shaft center 3 protruding to the opposite side of the body 2, and the propeller 6 is fixed to the shaft center 3 while being freely rotatable.

  When running tap water in the water-saving device 1 configured as described above, the water flow enters the plurality of through water channels 7 of the main body 2 from the side opposite to the propeller 6 with respect to the main body 2, as shown by arrows in FIGS. The water stream hits the propeller 6 one after another. As shown, the propeller 6 has a spiral curved surface having a substantially S-shaped cross section. Therefore, when each water stream hits the top of the propeller 6, for example, a force that rotates counterclockwise is applied to the propeller 6, and the propeller 6 continuously rotates at a high speed.

  When the propeller 6 rotates at a high speed, the curved surface on the substantially S-shaped back surface pushes out the water flow, thereby giving a rotational thrust to the water flow. Each water flow has a high pressure because the amount of water is reduced in the through water channel 7, but the plurality of propellers 6 of the present invention receives the pressure to efficiently change the rotational force of the propeller 6 as a whole, and is a kind of pump Alternatively, a rotational thrust is applied to the water stream in the form of a ship screw.

  Here, the momentum of water felt by humans is related not only to the amount of water and the water pressure but also to the flow velocity, the direction of flow, the distance, and the like.

  In the case of a conventional water-saving device, the water discharge pressure decreases as the amount of water is reduced, and not only the water pressure originally possessed by the water supply cannot be used efficiently, but also effective changes can be made in terms of flow velocity and flow direction. The water momentum was insufficient.

  However, in the case of the water-saving device 1 of the present invention, even if the amount of water is reduced, the water pressure that the water supply originally has is effectively used to change the rotational thrust to the above-mentioned rotational thrust and maintain the water pressure. It is possible to maintain the momentum of water even when the amount of water discharged is reduced. As a result, it has been found from experiments that the water pressure increases by about 20% when comparing the conventional water-saving device and the water-saving device 1 of the present invention assuming the same amount of water.

  Table 1 in FIG. 4 specifically shows the water-saving effect when the water-saving device of the present invention is attached to the shower head. Table 1 shows how much water flowed after a predetermined time through a predetermined flow of water to each of the caliber hoses equipped with the water-saving device of the present invention, that is, what percentage of water-saving effect was obtained. The water pressure was constant in all cases and was 0.32 MPa. The body sensitivity of the momentum of water discharge is stronger than the standard time when the caliber is φ1.9 to 2.0, compared to the standard time when no water-saving device is attached, and is almost the same at φ1.5 to 1.8, and at φ1.4 The result was weak. In other words, a good result was obtained that the water momentum was not different from that at the time of embarkation while having a water saving effect of about 20 to 40%.

  Table 2 in FIG. 4 shows a table comparing the performance of a shower head equipped with the water-saving device of the present invention with a standard shower head and a conventional representative water-saving shower head. Table 2 shows the difference between the amount of water discharged after a certain time, the water-saving effect rate, the flying distance of the discharged water, and the flying distance of the standard shower head, as compared with a standard shower head without a water-saving device attached. In the above table, the water-saving effect and flying distance of the conventional product and the product of the present invention are almost the same, but there is a big difference in body sensitivity. That is, the conventional product is twice the diameter of the water discharge hole of the screen as compared with the product of the present invention, but the number of holes is considerably small, and it cannot be said that the shower is comfortable. However, since the product of the present invention can maintain the water force, even if the hole diameter is small and the number of holes is 3.5 times, the same water-saving effect and flying distance can be obtained, and a comfortable touch can be provided without feeling uncomfortable as a shower.

  In addition, in order to rotate the propeller 6 smoothly and efficiently and to give thrust to the water discharge efficiently, the number of the propellers 6 is preferably 3, and the number of the through water channels 7 in the main body 2 is preferably 6. If the number is other than that, the propeller 6 does not rotate smoothly or the thrust cannot be efficiently applied to the water discharge.

  As mentioned above, although the water saving tool 1 of this invention was demonstrated, the principle which maintains or increases the momentum of the water discharge is applicable also to water injection apparatuses other than a water saving tool. For example, if used for a fountain device, the momentum and reach of the fountain can be increased, and if used for a fire fighting device, the flight distance of the fire water can be increased.

It is a perspective view of the water-saving tool 1 of this invention. 2 is a cross-sectional view of the water saving tool 1. FIG. A method for actually attaching the water saving tool 1 to the shower head will be described. It is the table | surface which compared the performance at the time of attaching the water-saving tool of this invention to a shower head, and this shower head with a standard shower head and the conventional typical water-saving shower head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water saving tool 2 Main body 3 Axis center 4 Flange 5 Propeller shaft 6 Propeller 7 Through water passage 8 Extension part 9 Insertion hole 10 Packing 11 Stopper part 12 Spacer 13 Spacer 14 Shower head 15 Hose

Claims (4)

A main body having a plurality of through water channels therein;
Extending and projecting along the central axis of the body;
A flange that is integral with the main body and protrudes in a direction perpendicular to the central axis;
A propeller shaft that is hollow and inserted into the shaft so as to be freely rotatable;
A plurality of propellers integrally formed with the propeller shaft and having a spiral surface with a substantially S-shaped cross section;
The main body further includes an insertion hole for fitting an extension portion of the axial center along the central axis of the main body, and the axial center further has a stopper portion for preventing the propeller shaft from coming off,
The propeller is continuously rotated at a high speed by the high-pressure water flow constricted in the plurality of through water passages successively hitting the plurality of propellers, and the thrust is added to the discharged water flow by the rotation to increase the momentum of the water flow. A water-saving device characterized by that.   2. The water-saving device according to claim 1, wherein the number of the plurality of through water channels in the main body is six and the number of the plurality of propellers is three to form an angle of 120 degrees with respect to each.   A fountain device characterized in that the water-saving tool is attached near the fountain outlet of the fountain device to increase the momentum and reach distance of the fountain.   A fire-fighting apparatus, wherein the water-saving device is attached near a discharge port of a fire hose to increase the momentum and reach of water discharged.

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