JP2010069035A - Shower device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shower device which stably obtains a sufficient amount of flow rate even in a low water-pressure region by reducing pressure loss in passing wash water through a nozzle, and is comfortably used. <P>SOLUTION: The shower device includes: a guide member having a water inflow chamber where wash water flows, and an opening part communicating with the inside/outside of the water inflow chamber; and a cylindrical body which is provided inside the water inflow chamber and allows the wash water flowing into the inflow chamber to exit from the opening part. The cylindrical body has a through-hole in the outer peripheral surface, where the wash water flows into a water passage. In the through-hole, an opening area on the outer peripheral side of the cylindrical body is made to be larger than an opening area on the inner side of the cylindrical body concerning the relation of the through-hole opening areas between the outer peripheral surface side of the cylindrical body and the inner side of the cylindrical body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water discharge device that discharges water while changing the water discharge direction (water discharge trajectory).

Conventionally, when a nozzle incorporated in an inflow chamber is in a water-filled state, the nozzle is configured to revolve around the central axis in a posture inclined with respect to the central axis of the opening, and discharges water in a wide range while swinging in the inflow chamber. There is something. (For example, patent document 1).
Japanese Patent No. 3518542

  The water discharge device disclosed in Patent Document 1 is a water discharge device that can discharge water over a wide range with a small flow rate and is very comfortable and easy to use. On the other hand, there is a desire to be able to demonstrate sufficient performance especially in low water pressure areas.

  The present invention has been made in view of the above-mentioned problems, and by reducing the pressure loss when washing water passes through the nozzle, it is possible to stably obtain a larger flow rate even in a low water pressure region, and to be used comfortably. Provided is a water discharge device.

  According to one aspect of the present invention, a guide member having an inflow chamber into which cleaning water flows, an opening provided through the inside and outside of the inflow chamber, the inside of the inflow chamber, A cylinder having a water passage that allows the wash water that has flowed into the inflow chamber to flow out of the opening, and the cylinder penetrates on the outer peripheral surface thereof so that the wash water can flow toward the water passage. The through hole has a through hole opening area relationship between the cylinder outer peripheral surface side and the cylinder inner side, and the cylinder outer periphery side opening area is larger than the cylinder inner side opening area. Is provided.

  According to the present invention, the nozzle incorporated in the inflow chamber is configured to revolve around the central axis in an inclined state with respect to the central axis of the opening, while swinging in the inflow chamber, In a water discharging apparatus that discharges water over a wide area, a water discharging apparatus that can stably obtain a larger flow rate even in a low water pressure region is provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1: shows the schematic cross section of the water discharging apparatus which concerns on embodiment of this invention.
The water discharge device according to the present embodiment mainly includes a guide member 1 and a cylindrical body 20.

  The guide member 1 has a structure in which a through hole is formed inside the sphere 2. A swirl chamber (inflow chamber) 3 extending in the diameter direction of the sphere 2 is formed inside the sphere 2. An opening 4 that communicates with the inside and the outside of the swirl chamber 3 is provided at one end of the swirl chamber 3 in the axial direction. The inner diameter dimension of the opening 4 is smaller than the inner diameter dimension of the swirl chamber 3, and the center of the opening 4 coincides with the central axis of the swirl chamber 3. An inflow hole 5 is formed outside the diameter of the swirl chamber 3 on the other end side in the axial direction. The inflow hole 5 communicates with the inside of the swirl chamber 3 and the outside of the sphere 2. The wash water introduced from the outside of the guide member 1 to the inflow hole 5 flows in the tangential direction to the swirl chamber 3 via the inflow hole 5, and a swirl flow of the wash water is formed inside the swirl chamber 3. The The opening 4 is open to the outside of the guide member 1, and the opening on the other end side of the swirl chamber 3 is closed by a sealing member 6.

  The cylindrical body 20 is formed in a substantially bottle shape having a reduced diameter portion 21 and a large diameter portion 22, and a water passage 23 is provided inside the cylindrical body 20. The outer diameter dimension of the large diameter portion 22 is smaller than the inner diameter dimension of the swirl chamber 3, and the large diameter portion 22 is accommodated inside the swirl chamber 3. The outer diameter dimension of the reduced diameter part 21 provided integrally with the large diameter part 22 is smaller than the inner diameter dimension of the opening part 4, and the reduced diameter part 21 penetrates the opening part 4, and the tip thereof is outside the spherical part 2. Protruding.

  As shown in FIG. 1, in the state where the cylindrical body 20 and the swirl chamber 3 are aligned with each other, the gap is formed between the outer peripheral surface of the reduced diameter portion 21 and the inner wall surface of the opening portion 4. Further, a gap is also formed between the outer peripheral surface of the large diameter portion 22 and the inner wall surface of the swirl chamber 3. The cylindrical body 20 is not fixed with respect to the guide member 1 and can freely rotate or swing and revolve for swinging.

  Both ends of the cylindrical body 20 in the axial direction are opened, and the cleaning water that has flowed into the cylindrical body 20 from the opening 25 on the large diameter portion 22 side flows in the cylindrical body 20 in the axial direction and opens on the reduced diameter portion 21 side. It is possible to flow out from the cylinder 20 to the outside. In addition, a plurality of through holes 24 that are intermittently arranged at equal intervals in the circumferential direction are formed on the circumferential surface (side surface) of the large-diameter portion 22 of the cylindrical body 20, and the washing water that has flowed into the swirl chamber 3 Even through these through holes 24, the gas can be guided into the cylindrical body 20 and flow out from the tip of the reduced diameter portion 21.

  Next, as an example of the embodiment of the present invention, details of the cylindrical body 20 are shown in FIG. A cross-sectional view along the line AA in the figure is shown below. In the present embodiment, the through hole 24 provided in the cylindrical body 20 opens from the outer peripheral surface side of the cylindrical body 20 toward the axis C <b> 4 passing through the center of the through hole 24, so that the outer peripheral surface side of the cylindrical body 20. The opening surface 26 is provided so that the area of the opening surface 26 is larger than the area of the cylindrical body inner opening surface 27.

Furthermore, in this embodiment, the through-hole 24 has a fan shape in cross section, and its central angle is 90 ° and is arranged on the outer peripheral surface of the cylinder 20 at intervals of 90 °. In addition, as a comparative example, an example in which the areas of the outer peripheral surface side opening surface 26 of the cylindrical body 20 and the inner side opening surface 27 of the cylindrical body 20 are equal is shown in FIG. In the figure, a BB cross-sectional view is shown below.
Next, a method for measuring the water pressure and flow rate of the water discharger according to the present embodiment will be described.

  FIG. 3 is a schematic diagram of a device for measuring the water pressure P and the water discharge flow rate Q applied to the water discharge device according to the present embodiment. As shown in FIG. 3, a water pressure meter and a flow meter were installed in the downstream flow path of the water discharge device, and the water pressure P applied to the water discharge device and the water discharge flow rate Q corresponding thereto were measured. Hereinafter, the relationship between the water pressure and the discharged water flow rate is defined as a PQ characteristic.

  A PQ characteristic diagram is shown in FIG. As shown in the PQ characteristic diagram, the relationship between the opening areas of the through holes provided on the outer circumferential surface of the cylinder 20 is such that the opening area on the outer circumferential surface side of the cylinder 20 is larger than the opening area on the inner side of the cylinder. It can be seen that the water pressure necessary to discharge a constant flow rate is reduced.

  For example, when compared with the water pressure required to discharge water at a flow rate of 3 L / min, the shape shown in FIG. 2 (b) is about 0.08 [MPa], whereas the shape shown in FIG. 2 (a) is about 0.07 [MPa]. It can be seen that the pressure loss caused by passing through the cylinder 20 of about 0.01 [MPa] is reduced.

Next, the operation of the water discharge device according to the present embodiment and the movement (trajectory) of the water discharge flow will be described.
FIG. 6 is a schematic view of the swirl chamber 3 and the cylindrical body 20 (the large-diameter portion 22) housed therein as seen from the plane direction, and corresponds to the AA-AA cross section in FIG.

  Wash water (including hot water) guided from a pipe (not shown) flows into the swirl chamber 3 having a substantially circular cross section from the tangential direction through the inflow hole 5 formed in the guide member 1. Thus, a flow of cleaning water swirling around the central axis C <b> 2 of the swirl chamber 3 is formed inside the swirl chamber 3.

  The cylindrical body 20 (the large-diameter portion 22) housed inside the swirl chamber 3 receives the swirling flow force, and tilts with respect to the central axis C2 of the swirl chamber 3 as shown in FIG. For example, it revolves around the central axis C2 of the swirl chamber 3 in the direction indicated by the arrow A in FIG. As shown in FIG. 5, a part of the reduced diameter portion 21 of the cylindrical body 20 contacts the opening 4, and a part of the side surface (circumferential surface) of the large diameter portion 22 contacts the guide surface 3 a of the swirl chamber 3. By doing so, further inclination of the cylindrical body 20 with respect to the central axis C2 of the swirl chamber 3 is restricted.

  In this specification, the revolving around the central axis C2 while the cylindrical body 20 is inclined with respect to the central axis C2 of the swirl chamber 3 is referred to as “swing swing revolution”. That is, when the cylindrical body 20 revolves around the central axis C2 while tilting with respect to the central axis C2 of the swirl chamber 3, the cylindrical body 20 is contracted around the vicinity of the portion where the reduced diameter portion 21 contacts the opening 4. It swings so that the tip of the diameter portion 21 swings its head.

  When the cylindrical body 20 swings and revolves, a part of the outer peripheral surface of the reduced diameter portion 21 is in contact with the inner wall surface of the opening 4, and a part of the side surface (peripheral surface) of the large diameter portion 22 is a swirl chamber. Since the three guide surfaces 3 a are in contact with each other, the dynamic friction force generated at the contact portions acts on the cylindrical body 20. Due to this dynamic friction force, the cylindrical body 20 does not slide and move in the swirl chamber 3 without changing the contact portion with the opening 4 or the guide surface 3a. And swing around the guide surface 3a. The fact that the cylindrical body 20 rolls on the inner wall surface of the opening 4 or the guide surface 3a means that the cylindrical body 20 rotates around its own central axis C1.

  That is, the cylindrical body 20 swings and revolves around the central axis C2 of the swirl chamber 3 while rotating about the central axis C1 thereof. The revolution direction (in the direction of arrow A in FIG. 6) of the cylindrical body 20 around the central axis C2 of the swirl chamber 3 is the same direction as the swirl direction of the swirl flow formed in the swirl chamber 3, and The direction of rotation around the central axis C1 (the direction of arrow B in FIG. 6) is opposite to the direction of revolution A. Regarding this rotation, the dynamic friction coefficient of the contact surface, the material and shape of the large-diameter portion 22 of the cylindrical body 20, the inflow speed from the inflow hole 5, the clearance between the swirl chamber 3 and the large-diameter portion 22, etc. The rotation direction and the number of rotations can be controlled.

  A part of the washing water flowing into the swirl chamber 3 flows into the cylindrical body 20 through the opening 25 at the end of the cylindrical body 20 on the large diameter portion 22 side and the through-hole 24 formed on the side surface. 20 flows in the axial direction toward the tip of the reduced diameter portion 21.

  In this way, the washing water that has passed through the reduced neck portion 21 is discharged from the tip of the cylindrical body 20. At this time, since the cylinder 20 moves by combining swinging revolution and rotation, the washing water discharged from the cylinder 20 also moves by combining swinging revolution and rotation.

  The water discharge locus is schematically shown in FIG. In FIG. 7, the water discharger shows only the cylindrical body 20 that is a movable part, and the guide member 1 in which the swirl chamber 3 is formed is not shown.

  The wash water discharged from the tip of the cylinder 20 is discharged while changing the water discharge direction due to the swinging revolution of the cylinder 20. As a result, the wash water discharged from the tip of the cylinder 20 draws a locus that spirally expands as shown by the dotted line in FIG.

FIG. 8 illustrates another embodiment of the present invention.
In the embodiment shown in FIG. 8, the shape of the through hole is a round shape or an elliptical shape. Also in the present embodiment, the through hole is such that the relationship between the outer peripheral surface of the cylinder 20 and the through hole opening area inside the cylinder 20 is larger than the opening area on the outer peripheral surface side of the cylinder 20 than the inner opening area of the cylinder. As with the through hole having the shape shown in FIG. 2A, the pressure loss when passing through the cylinder is reduced.
Further, FIG. 9 illustrates another embodiment of the present invention.

  In this embodiment, since the water channel of the cylinder 20 is inclined with respect to the center axis C1 of the cylinder 20 itself, the rotation of the cylinder 20 itself causes the same b direction as the rotation direction of FIG. A water discharge flow that moves while drawing a circular locus as indicated by a solid line is formed. Here, since the water passage of the cylinder 20 is inclined with respect to the central axis C1 of the cylinder 20, the water discharge flow moves so as to draw a circle larger than the diameter of the water discharge port 28 at the tip of the cylinder 20. To do.

  Further, in the present embodiment, the swirl revolution of the cylindrical body 20 around the central axis C2 of the swirl chamber 3 forms a water discharge flow that moves in a relatively narrow range as shown by a dotted line in FIG. The rotation angle determined by the inclination of the water passage of the cylinder body 20 is set larger than the revolution angle regulated by the cylinder body 20 and the guide surface 3a. The water flow moves in a direction narrower than the movement direction b of the water discharge flow formed by the rotation in a direction narrower than the movement range of the water discharge flow formed by the rotation at a higher speed than the movement in the b direction. Therefore, as a whole, the discharged water flow moves in a relatively narrow range in the direction of arrow a in FIG. 10 at high speed, and slowly moves in a range larger than the moving range in the direction b opposite to the direction a.

  Moreover, in order to perform rotation when the cylindrical body 20 is inclined, at least the outer peripheral surface of the reduced diameter portion 21 and the inner wall surface of the opening 4 need to contact each other, but in order to perform rotation more reliably. The large-diameter portion 22 is also preferably in contact with the inner wall surface (guide surface 3a) of the swirl chamber 3, so that the frictional force at the contact portion between the cylindrical body 20 and the guide member 1 is increased.

  In addition, the water discharging apparatus of this invention can be used also for a toilet bowl with a washing | cleaning function etc. besides using as a shower apparatus in a bathroom or a shower booth.

The schematic cross section of the water discharging apparatus which concerns on embodiment of this invention. The schematic diagram which looked at the cylindrical body accommodated in the inflow chamber inside in the water discharging apparatus which concerns on the same embodiment, and the through-hole shape provided in the cylindrical body from the plane direction. It is the schematic of a PQ characteristic measuring apparatus. It is a figure which shows the PQ characteristic in the case of using the case where embodiment of this invention is used, and another form. FIG. 2 is a schematic cross-sectional view similar to FIG. 1, showing a state where the cylinder is inclined with respect to the central axis of the swirl chamber. The schematic diagram which looked at the turning chamber in the water discharging apparatus which concerns on the same embodiment, and the large diameter part of the cylinder accommodated in this inside from the plane direction. The schematic diagram for demonstrating the behavior of the discharged water flow discharged from the water discharging apparatus which concerns on the same embodiment. It is a schematic diagram which illustrates the water discharging apparatus (only a cylinder) which concerns on other embodiment of this invention. It is a schematic diagram which illustrates the water discharging apparatus which concerns on other embodiment of this invention. It is a schematic diagram for demonstrating the behavior of the discharged water flow discharged from the water discharging apparatus which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide member 3 Inflow chamber 4 Opening part 5 Washing water inflow hole 20 Cylindrical body 21 Reduced diameter part 22 Large diameter part 23 Water flow path 24 Through hole

Claims (9)

A guide member having an inflow chamber into which cleaning water flows, and an opening provided through the inside and outside of the inflow chamber;
A cylindrical body provided inside the inflow chamber, and having a water passage capable of flowing out the wash water flowing into the inflow chamber from the opening;
With
The cylindrical body has a through hole on its outer peripheral surface through which washing water can flow toward the water passage.
The water discharge is characterized in that the through-hole has a relationship between a through-hole opening area on the outer peripheral surface side of the cylinder and the inner side of the cylinder, and the opening area on the outer peripheral side of the cylinder is larger than the opening area on the inner side of the cylinder apparatus.   The water discharge device according to claim 1, wherein the through hole of the cylindrical body has a fan shape when viewed in cross section.   The water discharge device according to claim 1 or 2, wherein the fan has a central angle of 90 degrees.   The water discharge device according to any one of claims 1 to 3, wherein the through holes are arranged so that the centers thereof are equally spaced.   The water discharge device according to any one of claims 1 to 4, wherein the through hole has a center disposed at every 90 °.   6. The cylinder according to claim 1, wherein the cylindrical body has a reduced diameter portion having a smaller diameter than the opening, and a tip of the reduced diameter portion protrudes from the opening to the outside of the guide member. The water discharging apparatus in any one.   The water discharge device according to any one of claims 1 to 6, wherein the cylindrical body swings and revolves with the wash water flowing into the inflow chamber.   The water discharging apparatus according to any one of claims 1 to 7, wherein the cylindrical body rotates around its central axis by the washing water flowing into the inflow chamber.   The water discharge device according to any one of claims 1 to 8, wherein a tip of the water passage of the cylindrical body is inclined with respect to a central axis of the cylindrical body itself.

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