JP3174201U - Air blow nozzle - Google Patents

Abstract

An air blow nozzle capable of effectively preventing dirt from adhering to a valve seat is provided.
A nozzle body 31 that is attached to a wall of a bathtub and is connected to an air supply pipe and includes an air supply path 33 and a valve seat 57, and is detachably attached so as to close the air supply path of the nozzle body. A cap 43 having an air ejection hole 47 and a valve body 59 movably accommodated in an air supply path between the valve seat portion and the cap are provided. The air supply path between the valve seat portion and the cap includes a taper portion 51 provided on the cap side, a straight portion 53 continuously provided on the opposite side of the taper portion, and the valve seat portion side of the straight portion. The distance from the upper end of the valve body to the boundary between the taper portion and the straight portion is the diameter of the valve body when the valve body is seated on the valve seat portion. It is set to 1/3 or more.
[Selection] Figure 4

Description

  The present invention relates to, for example, an air blow nozzle that is attached to a bathtub device with an air blow function, and more particularly to a device that is devised so as to prevent adhesion of dirt in an air supply path between a cap and a valve seat portion.

  The bathtub apparatus with an air blow function has the following general configuration. First, there is a bathtub, and a plurality of air blow nozzles are attached to the bottom wall of the bathtub. An air blow pump is installed, and the discharge side of the air blow pump and the plurality of air blow nozzles are connected by an air supply pipe. And by starting the said air blow pump, air is jetted in the hot water in a bathtub via the said several air blow nozzle.

  The air blow nozzle is configured as shown in FIG. 5, for example. First, there is a bottom wall 101 of a bathtub, and a through hole 103 is drilled in the bottom wall 101. A nozzle body 105 is fitted and disposed in the through hole 103. The nozzle body 105 is made of brass. The nozzle body 105 is attached so as to sandwich the bottom wall 101 with its own flange portion 107 and a fastening nut 109. A packing 111 is interposed between the flange portion 107 and the bottom wall 101. A packing 113 and a washer 115 are interposed between the fastening nut 109 and the bottom wall 101.

  An air supply pipe 117 is connected to the lower end of the nozzle body 105, and the air supply pipe 117 is connected to an air blow pump (not shown).

  An air supply path 119 is formed in the nozzle body 105, and the tip (the upper end side in FIG. 5B) of the air supply path 119 is an opening 121. A valve seat portion 123 is formed on the opening 121 side of the air supply path 119, and a spherical valve body 125 is installed in the valve seat portion 123 in a movable state.

  A cap 127 is detachably attached to the opening 121. A plurality of air jets 129 are formed in the cap 127.

  According to the above configuration, the air blow pump is activated at an appropriate timing in a state where hot water is contained in the bathtub. Thereby, air is ejected through a plurality of air blow nozzles. That is, by supplying air, the valve body 125 rises upward and the valve seat portion 123 is released. As a result, air is ejected through the air ejection holes 129.

  Further, by stopping the air blow pump, the valve body 125 falls on the valve seat portion 123 by its own weight and closes the valve seat portion 123. Thereby, inflow of hot water in the bathtub to the air blow nozzle side is prevented.

  For example, Patent Literature 1 and Patent Literature 2 disclose the configuration of this type of air blow nozzle.

However, the conventional configuration has the following problems.
First, there was a problem that the water stop performance of the valve part comprised of the valve body 125 and the valve seat part 123 was low. If the water stop performance of the valve part consisting of the valve body 125 and the valve seat part 123 is low, a part of the hot water enters the air blow nozzle and thus the air supply pipe 117 when the air blow pump is stopped. Will flow back with air at the next start-up. In that case, there is a problem that the user feels that he / she is hit by cold water, which causes a certain discomfort.
It is also expected that water accumulates in the air supply pipe 117 and germs propagate there. In that case, the propagated miscellaneous bacteria would enter the bathtub due to the reverse flow, which was also a sanitary problem.

  Therefore, the applicant for utility model registration has proposed an invention as shown in Patent Document 3.

Japanese Patent Laid-Open No. 10-5145 Japanese Patent Laid-Open No. 10-5146 JP 2007-319574 A

The conventional configuration has the following problems.
In other words, the invention described in Patent Document 3 can improve the water stopping performance, but another problem of adhesion of dirt to the inner wall of the air supply path between the cap 127 and the valve seat portion 123. Left.

  The present invention has been made on the basis of these points, and the object of the present invention is to effectively prevent dirt from adhering to the inner wall of the air supply path between the cap and the valve seat. An object is to provide an air blow nozzle.

In order to achieve the above object, an air blow nozzle according to claim 1 of the present invention is attached to a wall of a bathtub and connected to an air supply pipe, and includes a nozzle body having an air supply path and a valve seat, and the nozzle body. A cap detachably attached so as to close the air supply path, and a valve body movably accommodated in the air supply path between the valve seat portion and the cap. The air supply path between the valve seat portion and the cap includes a taper portion provided on the cap side, a straight portion provided continuously on the side opposite to the cap of the taper portion, and the straight portion. A boundary between the tapered portion and the linear portion from the upper end of the valve body in a state where the valve body is seated on the valve seat portion. the distance to the parts (L ₁₎ of the valve body And it is characterized in that it is set to be 1/3 or more of the diameter (D _1).
The air blow nozzle according to claim 2 is characterized in that, in the air blow nozzle according to claim 1, the axial length of the tapered portion and the axial length of the linear portion are set to be the same or substantially the same. Is.
The air blow nozzle according to claim 3 is characterized in that, in the air blow nozzle according to claim 2, a concave fitting portion into which the valve body is fitted is formed on a surface of the cap on the tapered portion side. Is.

As described above, according to the air blow nozzle of claim 1 of the present invention, the nozzle body attached to the wall of the bathtub and connected to the air supply pipe and having the air supply path and the valve seat portion; A cap detachably attached so as to close the air supply path, and a valve body movably accommodated in the air supply path between the valve seat portion and the cap. The air supply path between the valve seat portion and the cap includes a taper portion provided on the cap side, a straight portion provided continuously on the side opposite to the cap of the taper portion, and the straight portion. A boundary between the tapered portion and the linear portion from the upper end of the valve body in a state where the valve body is seated on the valve seat portion. the distance to the parts (L ₁₎ of the valve body diameter ( Since 1/3 is set to be more than _1), the length of the linear portion is sufficient, it is possible to enlarge the moving range of the valve body at the time of rise and fall, whereby the valve By increasing the frequency of collision of the body with the inner wall of the air supply path, it is possible to effectively prevent dirt from adhering to the inner wall of the air supply path.
The air blow nozzle according to claim 2 is the air blow nozzle according to claim 1, wherein the axial length of the tapered portion and the axial length of the linear portion are set to be the same or substantially the same. The length of the valve body can also be made sufficient, thereby expanding the range of movement of the valve body when ascending / descending, and thereby the frequency of collision of the valve body with the inner wall of the air supply path. To effectively prevent dirt from adhering to the inner wall of the air supply path.
Further, the air blow nozzle according to claim 3 is the air blow nozzle according to claim 2, wherein a concave fitting portion into which the valve body is fitted is formed on the surface of the cap on the tapered portion side. The movement range of the valve body can be expanded by that amount, thereby further enhancing the above effect.

It is a figure which shows one embodiment of this invention, and is a side view which shows the whole structure of the bathtub apparatus with an air blow function. It is a figure which shows one embodiment of this invention, and is a top view of the bathtub of the bathtub apparatus with an air blow function. FIG. 3A is a plan view of an air blow nozzle, and FIG. 3B is a cross-sectional view taken along the line bb of FIG. 3A. 4A and 4B are views showing an embodiment of the present invention, in which FIG. 4A is a plan view showing an attachment state of an air blow nozzle, and FIG. 4B is a cross-sectional view taken along line bb of FIG. FIG. 5A is a plan view showing a mounting state of an air blow nozzle, and FIG. 5B is a cross-sectional view taken along line bb of FIG. 5A.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing an overall configuration of a bathtub apparatus with an air blow nozzle function using an air blow nozzle according to the present embodiment, and FIG. 2 is a plan view of the bathtub.
First, there is a bathtub 1, and the bathtub 1 is configured to be supplied with hot water via a water tap (not shown). In addition, as shown in FIG. 2, a drain plug 5 is installed at a predetermined position on the side wall 3 of the bathtub 1 so that used hot water can be appropriately drained through the drain plug 5.

  An air blower 11 is installed in the bathtub 1. Hereinafter, the configuration of the air blowing device 11 will be described. First, an air blow pump 13 is installed, and an air supply pipe 15 is connected to the discharge side of the air blow pump 13. On the other hand, as shown in FIG. 2, a plurality (six in the case of this embodiment) of air blow nozzles 17 are attached to predetermined positions of the bottom wall 3 of the bathtub 1. An air supply pipe 19 is connected to the air blow nozzle 17. The plurality of air supply pipes 19 are gathered in a single air supply pipe 21. The air supply pipe 21 and the already described air supply pipe 15 are connected via an air supply hose 23.

  The air blow pump 13 is provided with a control panel 25, and various controls are performed via the control panel 25.

  The air blow nozzle 13 is configured as shown in FIGS. 3A is a plan view showing the configuration of the air blow nozzle 13 according to the present embodiment, FIG. 3B is a sectional view taken along the line bb of FIG. 3A, and FIG. 4A is the present embodiment. The top view which shows the state which actually attached the air blow nozzle 13 by the bottom wall 3 of the bathtub 1 to FIG. 4, FIG.4 (b) is bb sectional drawing of Fig.4 (a).

  First, there is a nozzle body 31, which is made of stainless steel (SUS304), has a hollow shape, and an air supply path 33 is formed. A flange portion 35 is formed at the tip of the nozzle body 31 (the upper end in FIG. 3B). A cap concave fitting portion 37 is formed on the inner peripheral side of the flange portion 35, and a female screw portion 39 is provided on the inner peripheral surface of the cap concave fitting portion 37. The nozzle body 31 is provided with a male screw portion 41.

  A stainless steel (SUS304) cap 43 is detachably screwed and fixed to the cap recess 37. The cap 43 has a substantially disk shape and is provided with a male screw portion 45 on the outer peripheral portion. The cap 43 is provided with air ejection holes 47, 47, 47 at three locations that are even in the circumferential direction. Further, a valve body concave fitting portion 49 into which a part of a valve body described later is fitted is formed on the inner side surface of the cap 43. The function of the valve body recess 49 will be described later.

  A tapered portion 51 is first formed at the tip of the air flow path 33 of the nozzle body 31 (the upper end in FIG. 3B), that is, the end on the cap 43 side. A straight line portion 53 is continuously provided on the opposite end side of the taper portion 51. An arcuate portion 55 is continuously provided on the opposite end side of the linear portion 53. Further, a valve seat portion 57 is provided on the opposite end side of the arc-shaped portion 55. A valve body 59 made of stainless steel (SUS304) and having a spherical shape is seated on the valve seat portion 57 in a movable state.

A relationship as shown in the following formula (I) is set among the tapered portion 51, the straight portion 53, the arc-shaped portion 55, and the valve body 59.
_{L 1 ≧ D 1/3 ---} (I)
However,
L _1: while the valve body 59 is seated on the valve seat portion 57, the distance D ₁ of the from the upper end of the valve body 59 to the boundary portion between the tapered portion 51 and the straight portion _53: valve body having a diameter such By setting the valve body 59 to a sufficient range of movement when the valve body 59 is raised and lowered, when the valve body 59 rises and falls while rotating, the collision frequency against the inner wall of the air supply path 33 is increased. Thus, the adhesion of dirt to the inner wall of the air supply path 33 is effectively prevented.

The axial length of the tapered portion 51 and the axial length of the linear portion 53 are set to be the same or substantially the same. As a result, the length of the tapered portion 51 can also be made sufficient, so that the range of movement of the valve body during ascent and descent can be expanded, and the air supply path 33 of the valve body 59 can be expanded. The frequency of collision with the inner wall of the air supply passage 33 is increased, and dirt can be effectively prevented from adhering to the inner wall of the air supply path 33.
In addition, when the valve body 59 rises, a part of the valve body concave fitting portion 49 is fitted. The movement range of the valve body 59 can be expanded also by the valve body concave fitting portion 49.

  3 and 4, reference numerals 61 and 63 are packings, reference numeral 65 is a stainless steel (SUS304) washer, and reference numeral 67 is a C3604BD (brass) hexagon nut. Then, as shown in FIG. 4, with the nozzle body 31 penetrating through the through hole 69 of the bottom wall 3, a packing 61 is interposed between the flange portion 35 of the nozzle body 31 and the bottom wall 3. Then, the packing 63 and the washer 65 are interposed between the bottom wall 3 and the hexagon nut 67, and in this state, the hexagon nut 637 is screwed into the male thread portion 41 of the nozzle body 31, whereby the nozzle main body 31 and each component. Is attached and fixed to the bottom wall 3.

The operation will be described based on the above configuration.
In a state where hot water is contained in the bathtub 1, the air blow pump 13 is activated at an appropriate timing. As a result, air is supplied and ejected through the plurality of air blow nozzles 17. That is, by supplying air, the valve body 59 rises upward and the valve seat portion 57 is opened. As a result, air is ejected through the air ejection holes 47.

  Further, when the air blow pump 13 is stopped, the valve body 59 falls on the valve seat portion 57 by its own weight and closes the valve seat portion 57. Thereby, the inflow of hot water in the bathtub 1 is prevented.

The raising / lowering operation of the valve body 59 will be described in more detail.
First, the valve body 59 is lifted. In this case, when the air blow pump 13 is activated, the valve body 59 seated on the valve seat portion 57 rises while rotating upward. At that time, it rises while colliding with the inner wall of the air supply path 33 between the cap 43 and the valve seat portion 57. As a result, dirt adhering to the inner wall of the air supply path 33 between the cap 43 and the valve seat 57 is removed, and new dirt is prevented from adhering. The valve body 59 floats and stops in a state where the valve body 59 is fitted in the valve body concave fitting portion 43 of the cap 43.

  The same applies when the valve body 59 is lowered. In this case, when the air blow pump 13 is stopped, the valve body 59 that is levitated and fitted in the valve body concave fitting portion 43 of the cap 43 descends while rotating downward due to its own weight. Then, it descends while colliding with the inner wall of the air supply path 33 between the cap 43 and the valve seat portion 57. As a result, dirt adhering to the inner wall of the air supply path 33 between the cap 43 and the valve seat 57 is removed, and new dirt is prevented from adhering.

  The air probe pump 13 is operated intermittently, for example, by a timer setting, and is also intermittently operated by a user operation. As a result, the valve element 59 is repeatedly raised and lowered, and the dirt removal and dirt adhesion preventing action is repeated by repeatedly raising and lowering the valve element 59.

As described above, according to the present embodiment, the following effects can be obtained.
First, in a state in which the valve body 59 is seated on the valve seat 57, the distance (L ₁ ) from the upper end of the valve body 59 to the boundary between the tapered portion 51 and the linear portion 53 is defined as the diameter of the valve body. Since it is set to 1/3 or more of (D ₁ ), the moving range when the valve element 59 is raised and lowered can be made sufficient. Thereby, the frequency of collision of the valve body 59 against the inner wall of the air supply path 33 at the time of ascending / descending can be increased, and dirt attached to the inner wall of the air supply path 33 can be effectively removed, Adhering of new dirt can be effectively prevented.
In addition, since the axial length of the tapered portion 51 and the axial length of the linear portion 53 are set to be the same or substantially the same, the length of the tapered portion 51 can be sufficient, This also increases the range of movement of the valve body when it is raised and lowered, increases the frequency of collision of the valve body 59 with the inner wall of the air supply path 33, and adheres dirt to the inner wall of the air supply path 33. Can be effectively prevented.
Further, since the valve body concave fitting portion 49 into which the valve body 59 is fitted is formed on the surface of the cap 43 on the tapered portion 51 side, the valve body 59 is moved by the valve body concave fitting portion 49. The range can be expanded and the above effect can be further enhanced.
In the case of the present embodiment, since a separate sealing member is not particularly provided between the nozzle body 31 and the valve body 59, the number of parts is small, and parts management is facilitated and costs are reduced. Can be planned.

The present invention is not limited to the one embodiment.
For example, when the distance (L ₁ ) to the boundary between the taper part 51 and the linear part 53 is set to 1/3 or more of the diameter (D ₁ ) of the valve body, how large is the size? Is optional.
Further, the material of each component is not particularly limited.
In addition, the illustrated configuration is merely an example.

DESCRIPTION OF SYMBOLS 1 Bathtub 13 Air blow pump 17 Air blow nozzle 31 Nozzle main body 33 Air supply path 35 Flange part 43 Cap 47 Air ejection hole 51 Tapered part 53 Linear part 55 Arc-shaped part 57 Valve seat part 59 Valve body

Claims (3)

A nozzle body attached to a bathtub and connected to an air supply pipe and having an air supply path and a valve seat;
A cap that is detachably attached so as to close the air supply path of the nozzle body, and has an air ejection hole;
A valve body movably accommodated in the air supply path between the valve seat portion and the cap, and opening and closing the valve seat portion,
The air supply path between the valve seat portion and the cap includes a taper portion provided on the cap side, a straight portion provided continuously on the side opposite to the cap of the taper portion, and the valve of the straight portion. It is composed of an arc-shaped part that is connected to the seat side,
In a state where the valve body is seated on the valve seat portion, a distance (L ₁ ) from the upper end of the valve body to a boundary portion between the tapered portion and the linear portion is 1 / D of the diameter (D ₁ ) of the valve body. An air blow nozzle characterized by being set to 3 or more. In the air blow nozzle according to claim 1,
The air blow nozzle characterized in that the axial length of the tapered portion and the axial length of the linear portion are set to be the same or substantially the same. In the air blow nozzle according to claim 2,
An air blow nozzle, wherein a concave fitting portion into which the valve body is fitted is formed on a surface of the cap on the tapered portion side.

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