JP4259989B2 - Attachment for mixing - Google Patents

Description

  The present invention relates to a mixing attachment that mixes a mixing medicine with raw water and flows it out together with the raw water, and a medicine spraying device to which the mixing attachment is integrally attached.

  For example, in a spraying device such as a shower device, a chemical such as a bathing agent is added and mixed as a mixing agent to the raw water supplied via a pipe such as a hose, and the raw water can be sprayed from the spraying device together with the mixing agent. An attached attachment is disclosed (for example, see Patent Document 1).

  As shown in FIG. 9, the attachment described in Patent Document 1 includes a double structure including an inner cylinder 50 and an outer cylinder 51, and the inner side of the inner cylinder 50 is connected to a main water passage 52 of raw water. At the same time, a space between the inner cylinder 50 and the outer cylinder 51 is used as a sub-water passage (medicine storage chamber) 53, and a solidified cosmetic agent eluted by water is sealed inside. And according to the attachment of patent document 1, with respect to the disk-shaped water distribution board 54 provided in the inflow port of the raw | natural water to the chemical | medical agent storage chamber 53, the disk shape arrange | positioned so that it may overlap with this upstream side The control hole 55 can be opened and closed by sliding the control plate 55 relatively through the knob 56.

Further, according to the attachment described in Patent Document 1, the raw water fed from the upstream flow path 58 by the hose has a liquid distribution chamber 60 having an inner diameter larger than that of the hose attachment portion 59 via the hose attachment portion 59. Into the main water passage 52 inside the inner cylinder 50 and the drug between the inner cylinder 50 and the outer cylinder 51 communicating through the water passage hole 57 at the time of release. Raw water can be distributed and flowed into the storage chamber 53.
Japanese Utility Model Publication No. 6-81389

  However, according to the conventional mixing attachment described above, the inlet to the medicine storage chamber 53 through the water passage hole 57 is the inlet to the main water passage 52 in the same plane as the inlet to the main water passage 52. Since the raw water of the flow rate according to the supply pressure from the upstream flow path 58 flows into the medicine storage chamber 53, the raw water flows in the medicine storage chamber 53. A large variation is likely to occur in the concentration of the mixing agent in the raw water of the main water passage 52 after being dissolved or diluted in the raw water. Further, for example, when the amount of the mixing drug stored in the drug storage chamber decreases from the start to the end of the shower, the stored mixing drug is, for example, 200 mPa · sec to 40000 mPa · When it has a viscosity of about sec, it becomes difficult to maintain the concentration of the mixing agent in the raw water within a desired range.

  Even when the supply pressure of the raw water from the upstream flow path is changed, the present invention can suppress the variation in the concentration of the mixing chemical in the raw water, and the concentration of the mixing chemical in the raw water is in a desired range. It is an object of the present invention to provide a mixing attachment that can be mixed with raw water while maintaining a predetermined time.

  The present invention is provided between the upstream flow channel and the downstream flow channel, and is mixed with the raw water flowing in from the upstream flow channel while mixing the mixing agent stored in the drug storage chamber with the raw water. A mixing attachment for flowing out into the downstream flow path, having an inner cylindrical body and an outer cylindrical body, the inside of the inner cylindrical body as a raw water main flow path, and an inner cylindrical body and an outer cylindrical body, The hollow portion is used as the drug storage chamber, and the raw water main flow path (first reduced diameter portion) inner diameter D1 is a portion where the inlet of the raw water inflow passage to the drug storage chamber is open (flow The above object is achieved by providing a small mixing attachment and a medicine spraying device in which the mixing attachment is integrally attached to the raw water main flow path inner diameter D2 of the inlet opening).

  According to the mixing attachment of the present invention and the medicine spraying device to which the mixing attachment is integrally attached, even when the supply pressure of the raw water from the upstream channel changes, the concentration of the mixing medicine in the raw water varies. While being able to suppress generation | occurrence | production, the chemical | medical agent for mixing can be mixed with raw | natural water, maintaining the density | concentration of the chemical | medical agent for mixing in raw | natural water for a predetermined time in a desired range.

  In addition, in the case of a mixing attachment in which a medicine storage chamber (sub-waterway) and a raw water main flow path are formed, if the flow rate of raw water flowing through the raw water main flow path is too large, the flow rate distributed to the drug storage chamber is reduced. It was difficult to mix the mixing agent with the raw water while maintaining the mixing agent concentration within the desired concentration range for a predetermined time. If the flow rate distributed to the drug storage chamber (sub-waterway) is too large, the concentration of the mixing drug is kept within the desired range while ensuring the desired flow rate of the shower flow that flows the mixing drug together with the shower water. It was difficult to do.

  According to the shower apparatus to which the attachment for mixing of the present invention is integrally attached, the flow rate flowing through the raw water main channel is 7 to 25 times the flow rate distributed to the sub-water channel, so that the shower flow rate is mixed. It can be set to 85% to 100% with respect to the flow rate (8 L / min to 15 L / min) of a general shower apparatus that does not use an attachment. As a result, a good shower flow rate can be obtained, and the concentration of the mixing agent in the raw water can be set to a desired range, and the mixing agent can be mixed with the raw water while maintaining the desired concentration for a predetermined time.

  The mixing attachment 10 according to the first preferred embodiment of the present invention is attached, for example, between a shower device 11 as a spray device and a shower water supply hose 12 as shown in FIG. Shower water in which these chemicals for mixing are mixed by adding and mixing chemicals such as bath chemicals, cleaning chemicals, perfume chemicals, skin care chemicals and the like to the shower device 11 on the downstream side. It is used to make it possible to perform a shower.

  And the attachment 10 for mixing of this 1st Embodiment is shown in FIG. 2 (a), (b), and FIG. 3, the upstream flow path 13 in the shower water supply hose 12, and the shower apparatus 11 While intermixed with the raw water flowing in from the upstream flow path 13 while mixing the drug stored in the drug storage chamber 15 in a liquid, gel-like, granular, etc. An attachment for flowing a mixed solution obtained by diluting or dissolving a mixing agent into the downstream flow path 14 together with raw water, and has an inner cylindrical body 19 and an outer cylindrical body 20 arranged concentrically, The inside of the cylindrical body 19 is a raw water main flow path 21, and the hollow portion having an annular cross section between the inner cylindrical body 19 and the outer cylindrical body 20 has both ends on the upstream side blocking portion 22 and the downstream side blocking portion. 23 to cover the medicine storage chamber 15In addition, the inlet 16c of the raw water inflow passage 16 into the medicine storage chamber 15 provided in the upstream side blocking portion 22 is a portion where the inner diameter of the raw water main flow passage 21 is reduced (hereinafter referred to as “first reduced diameter portion”) 21a. Is disposed in the upstream side portion (hereinafter referred to as “inlet opening portion”) 21 b and opens on the inner side surface 45 of the raw water main flow path 21.

  Further, according to the mixing attachment 10 of the first embodiment, the raw water main flow channel 21 is a portion on the upstream side of the inlet opening portion 21b (hereinafter referred to as “first”), which is a portion where the inlet port 16c of the raw water inlet channel 16 opens. After the inner diameter is once reduced at 21c, the inner diameter is enlarged at the inlet opening 21b, and further, the inner diameter is reduced at the first reduced diameter portion 21a on the downstream side.

  If the inflow port 16c is provided on the inner side of the inner diameter D3 of the second reduced diameter portion, when the flow disturbance occurs in the raw water main flow path 21, the flow state of the raw water flowing into the drug storage chamber is directly affected. It is desirable to open outside the inner diameter D3 of the two reduced diameter portions.

  According to the mixing attachment 10 of the first embodiment, the raw water inflow channel 16 is provided including a portion 16 a that extends obliquely from the inflow port 16 c on the inner surface of the raw water main flow channel 21 toward the medicine storage chamber 15. It has been.

  According to the first embodiment, the mixing attachment 10 is a substantially cylindrical device, and the mounting hole 24 into which the shower device 11 is screwed and mounted is surrounded by the peripheral wall 33 at the upper end. ing. Further, a mounting projection 25 to which the shower water supply hose 12 is mounted is provided at the lower end portion of the attachment 10 so as to protrude downward from the overhanging base end portion 30. And the raw | natural water main flow path 21 which penetrates between the attachment hole 24 and the attachment protrusion 25 and cuts through the attachment 10 for mixing vertically is located in the center part of the attachment 10 for mixing of circular cross section, and the inner side cylinder 19 Is formed inside.

  The outer cylindrical body 20 concentrically arranged with the inner cylindrical body 19 is a transparent synthetic resin member, and protrudes inward in the radial direction from the upper and lower ends, and is provided integrally as an upstream side. A space surrounded by the blocking portion 22b, the downstream inner blocking portion 23b, and the outer peripheral surface of the inner cylindrical body 19 forms a medicine storage chamber 15 having an annular cross section. The outer cylindrical body 20 has an air hole 26 formed at the upper end portion thereof, and a water drain injection hole 27 (a hole for draining water and injecting medicine) at the lower end portion of the air hole 26. It is provided vertically below. Further, a transparent cylindrical cover body 28 is attached so as to cover the outer side of the outer cylindrical body 20, and the cover body 28 can be slid up and down with respect to the outer cylindrical body 20, and the outer cylindrical body. It is integrated with the body 20 so as to be rotatable and slidable with respect to the upstream outer blocking portion 22a and the downstream outer blocking portion 23a together with the outer cylindrical body 20.

  Furthermore, according to the first embodiment, the upstream outer blocking portion 22a that forms the upstream blocking portion 22 together with the upstream inner blocking portion 22b is integrally formed with the mounting protrusion 25 with the overhanging base end portion 30 interposed therebetween. It is a portion that is mounted and fixed so as to cover the outer peripheral surface of the inner cylindrical body 19 and is attached so as to close the gap between the inner cylindrical body 19 and the outer cylindrical body 20 from the outside of the upstream inner blocking portion 22b. . Further, the downstream outer blocking portion 23a that forms the downstream blocking portion 23 together with the downstream inner blocking portion 23b is integrally formed with the inner cylindrical body 19 so as to extend radially outward from the upper end of the inner cylindrical body 19. This is a portion provided so as to close the space between the inner cylindrical body 19 and the outer cylindrical body 20 from the outside of the downstream inner blocking portion 23b. In addition, according to the first embodiment, an O-ring or the like is appropriately provided as necessary at a joint portion between the outer closing portions 22a and 23a and the inner block portions 22b and 23b or a joint portion between other members. The water stoppage of these joints is improved.

  When the inner diameter of the raw water inflow passage 16a is increased, there is a possibility that the raw water that has flowed into the medicine storage chamber flows backward, and it is necessary to reduce the inner diameter of the raw water inflow passage 16a. However, when the inner diameter of the raw water inflow passage 16a is reduced, it is difficult to stably flow the raw water into the medicine storage chamber 15 when the supply pressure of the raw water fluctuates. By providing a portion with a narrowed inner diameter in the raw water main channel 21, the raw water can be stably flowed into the medicine containing chamber 15 even if the inner diameter of the raw water inflow passage 16 a is small.

  And according to this 1st Embodiment, as shown in FIG. 3, in the downstream of the inlet opening 21b of the raw | natural water main flow path 21 where the inlet 16c of the raw | natural water inflow channel 16 opens, it is a part by which an internal diameter is restrict | squeezed. A certain first diameter-reduced portion 21a has an annular step surface 42 along a plane perpendicular to the axial direction of the raw water main flow channel 21 interposed between the inlet opening 21b so that its diameter D1 The diameter is reduced to be 30 to 90% of the diameter D2 of the inlet opening 21b. Thereby, the advantage that the raw water is compressed and the raw water is easily taken into the inlet 16c when the inlet 16c is released is obtained.

Further, according to the first embodiment, the inlet 16c of the raw water inflow passage 16 is opened at the inner side surface 45 of the inlet opening 21b, and is formed in the upstream outer blocking portion 22a of the raw water inflow passage 16. The outer raw water inflow passage 16a has an inner diameter of about 0.3 to 6 mm, for example, in a shower device, and is, for example, 5 with respect to the axial direction of the raw water main flow passage 21 from the inlet 16c toward the medicine storage chamber 15. It is provided obliquely extending at an angle of about ˜80 degrees.

  Furthermore, according to the first embodiment, on the upstream side of the inlet opening 21b where the inlet 16c of the raw water inflow passage 16 opens, the inner diameter of the raw water main channel 21 is once reduced as the second reduced diameter portion 21c. It has been. That is, the inner diameter D3 of the second reduced diameter portion 21c is formed by interposing an annular step surface 43 along a surface perpendicular to the axial direction of the raw water main channel 21 between the inlet opening portion 21b. The diameter is reduced to be 30 to 90% of the inner diameter D2 of the inlet opening 21b. As a result, the raw water that has passed through the second reduced diameter portion 21c flows in an oblique direction with respect to the axial direction of the raw water main flow path 21 at the inlet opening 21b, and has an advantage that the raw water can be easily taken into the inlet 16c. Will be obtained. Further, according to the first embodiment, the inner diameter D3 of the second reduced diameter portion 21c is larger than the inner diameter D1 of the first reduced diameter portion 21a. Thereby, an advantage that raw water can be easily taken into the inflow port 16c is obtained.

  On the other hand, according to the first embodiment, the mixing drug inflow passage 16 accommodated in the medicine accommodating chamber 15 through the slide locking mechanism by the operation of the cover body 28 attached to the outside of the outer cylindrical body 20. In addition, the opening and closing of the outflow passage 17, the drainage from the medicine storage chamber 15, and the switching to a state in which the mixing medicine can be injected into the medicine storage chamber 15 can be easily performed. That is, as shown in FIG. 4, the upper half portion of the cylindrical cover body 28 is provided with a plurality of anti-slip projections 37 for easily sliding the cover body 28, Further, a notch recess 29 is provided at the lower end edge of the cover body 28 as a slide locking mechanism, and the notch recess 29 is provided at the base end projecting upward from the protruding base end 30 of the mounting projection 25. The locking projection 31 is locked. Further, a cover body projection 32 is provided at the upper end of the cover body 28 so as to protrude upward, and the cover body projection 32 is formed by extending in the circumferential direction along the lower end edge of the peripheral wall 33 of the mounting hole 24. The notch groove 34 is slidably fitted and slidable. Further, the cover body 28 is formed with a cover body air hole 35 at its upper end and a cover body drain injection hole 36 at its lower end (see FIG. 2A). The air holes 35 and the cover body draining injection holes 36 are equal to these intervals and the cover body draining injection holes 36 so that they can coincide with the air holes 26 and the draining injection holes 27 of the outer cylindrical body 20 at the same time. Is provided in a state of being positioned vertically below the cover body air hole 35.

  Then, if the cover body 28 is slid downward relative to the outer cylindrical body 20 and the notch recess 29 is locked to the base end locking projection 31, the air hole 26, the cover body air hole 35, and the water drain The injection hole 27 and the cover body water draining injection hole 36 coincide with each other at the same time (see FIGS. 5A and 5B), and the outer raw water inlet 16a formed in the upstream outer closing portion 22a and the upstream The inner raw water inlet 16b formed in the side inner closed portion 22b, the outer outlet 17a formed in the downstream outer closed portion 23a, and the inner outlet 17b formed in the downstream inner closed portion 23b do not communicate with each other. It becomes. From this state (see FIG. 3), if the cover body 28 is slid upward with respect to the outer cylindrical body 20, the notch recess 29 is locked to the base end locking protrusion 31, and The cover body protrusion 32 at the upper end of the cover body 28 is disposed at the left end of the cutout concave groove 34, and the integral locking groove 38 formed on the inner surface of the cover body 28 is formed on the outer peripheral surface of the outer cylindrical body 20. The cover pair 28 and the outer cylindrical body 20 can be rotated together as a result of being locked by the integrated locking protrusion 39. By sliding the cover body 28 upward relative to the outer cylindrical body 20, the matched air hole 26 and cover body air hole 35, the water drain injection hole 27 and the cover body water drain injection hole 36 are formed. These are shifted up and down to close them (see FIG. 2A).

  From the state in which the cover body 28 is slid upward and the cover body 28 and the outer cylindrical body 20 can rotate together, the cover body protrusion 32 is further rotated to the right along the notch groove 34, If these are slide-rotated until the cover protrusion 32 is in contact with the right end of the notch groove 34, the outer closing portions 22a, 23a and the inner closing portions 22b, 23b are relatively slid and rotated, and the upstream outer side The outer raw water inflow passage 16a formed in the blocking portion 22a, the inner raw water inflow passage 16b formed in the upstream inner blocking portion 22b, and the outer outflow passage 17a and the downstream inner blocking portion formed in the downstream outer blocking portion 23a. The inner outflow passage 17b formed in 23b is in communication with the inner outflow passage 17b (see FIG. 2B), and the raw water inflow passage 16 and the outflow passage 17 are formed at the same time. It is possible to flow out the mixed agent with is.

  On the other hand, when the raw water inflow path 16 and the outflow path 17 are simultaneously opened to allow the mixing agent to flow out, the cover body 28 and the outer cylindrical body 20 are integrally slid and rotated in the opposite direction to form the raw water. The inflow path 16 and the outflow path 17 are simultaneously closed, so that the outflow of the mixing medicine and the inflow of the raw water into the medicine storage chamber 15 are easily restored. If the cover body 28 is further slid downward with respect to the outer cylindrical body 20, the air hole 26 and the cover body air hole 35, and the water drain injection hole 27 and the cover body water drain injection hole 36 are matched again. As a result, the fluid remaining in the medicine storage chamber 15 can be discharged.

  Note that, according to the first embodiment, the spiral flow that is connected to the outlet of the raw water inflow passage 16 at the upstream end of the medicine storage chamber 15 and generates a spiral flow toward the outflow passage 17 in the medicine storage chamber 15. A generating means 18 is provided. That is, according to the first embodiment, as shown in FIG. 6 for example, the spiral flow generating means 18 communicates with the inner raw water inflow passage 16b and is provided so as to protrude above the upstream inner blocking portion 22b. A pair of hollow cylindrical projections 40 having a discharge port 41 closed at the lower end portion of the medicine storage chamber 15 having an annular cross section and spaced at an interval of 180 degrees in the circumferential direction. Moreover, these hollow cylindrical protrusions 40 flow in from the raw water inflow passage 16 because the discharge ports 41 are opened laterally in the same rotational direction along the circumferential direction of the medicine storage chamber 15 having an annular cross section. The raw water to be discharged is discharged from the discharge port 41 toward the circumferential direction of the annular cross section, thereby generating a spiral flow toward the outflow path 17 in the medicine containing chamber 15.

  FIGS. 7A and 7B show a mixing attachment 80 according to the second embodiment of the present invention. The mixing attachment 80 according to the second embodiment has substantially the same configuration as that of the mixing attachment 10 according to the first embodiment, while the upstream blocking portion 81 is operated by rotating the outer cylindrical body 20 with respect to the inner cylindrical body 19. The mechanism that opens and closes the raw water inflow path 83 formed in the flow path and the outflow path 84 formed in the downstream side blocking portion 82 is different from the opening and closing mechanism of the first embodiment. Further, according to the second embodiment, the inlet 83c of the raw water inflow passage 83 to the medicine storage chamber 15 provided in the upstream side blocking portion 81 is located upstream of the portion 21a in which the inner diameter of the raw water main passage 21 is reduced. In the portion 21 b, the raw water main flow channel 21 is arranged immediately before the portion 21 a where the inner diameter is reduced, and is open on the inner surface of the raw water inflow channel 21. Further, the raw water inflow passage 83 does not include a portion extending obliquely from the inflow port 83c toward the medicine storage chamber 15, and at the start portion thereof, the raw water inflow passage 83 extends in a direction perpendicular to the axial direction of the raw water main flow channel 21. It is extended and provided.

  Further, according to the second embodiment, the inner cylindrical body 19 is provided with the upstream communication hole 85 and the downstream communication hole 86 at a portion where the peripheral surface is covered with the upstream blocking part 81 and the downstream blocking part 82. The inner cylindrical body 19 is vertically opened at the same position in the circumferential direction so as to penetrate the circumferential wall of the inner cylindrical body 19 in the lateral direction. Further, the inflow path 83 and the outflow path 84 formed respectively inside the upstream side blocking part 81 and the downstream side blocking part 82 are along the circumferential direction of the upstream side blocking part 81 and the downstream side blocking part 82 that are annular portions. These central portions are respectively provided so as to penetrate concentrically and annularly.

  Furthermore, according to the present embodiment, the raw water inflow passage 83 formed inside the upstream side blocking portion 81 is a portion of the upstream side blocking portion 81 that covers the outer peripheral surface of the inner cylindrical body 19 at a specific position in the circumferential direction. And an inlet 87 (see FIG. 7 (b)) formed so as to pass through the storage chamber, and a storage chamber side communication hole 88 formed through the top wall of the inflow passage 83 and opened at a plurality of locations in the circumferential direction. The raw water can be supplied from the inflow path 83 to the medicine storage chamber 15 through these storage chamber side communication holes 88. Further, the outflow passage 84 formed inside the downstream side blocking portion 82 is a downstream side blocking portion 82 that covers the outer peripheral surface of the inner cylindrical body 19 at a specific position in the circumferential direction facing the same direction as the inflow port 87. The accommodation chamber side communication hole 90 having an outlet 89 (see FIG. 7B) formed through the outer wall and having a plurality of openings formed in the circumferential direction through the lower wall of the outflow passage 84. The raw water mixed with the mixing medicine can be discharged from the medicine storage chamber 15 to the outflow path 84 through these storage chamber side communication holes 90.

  Then, according to the mixing attachment 80 of the second embodiment, the upstream blocking portion 81 and the downstream blocking portion 82 are engaged with the inner cylindrical body 19 in the same manner as the mixing attachment 10 of the first embodiment. As shown in FIG. 7A, the upstream side communication hole 85 and the downstream side communication hole 86, and the flow of the inlet 87 and the outlet 84 of the inflow path 83 are obtained by the rotation operation of the outer cylindrical body 20 integrated with the stop. The state in which the outlet 89 is displaced from each other, the upstream side communication hole 85 and the downstream side communication hole 86, and the inlet 87 of the inlet 83 and the outlet 89 of the outlet 84 as shown in FIG. At the same time, the matching state can be easily switched, and the inflow port 83c of the raw water inflow passage 83 to the medicine storage chamber 15 provided in the upstream side blocking portion 81 is a portion 21a in which the inner diameter of the raw water main passage 21 is reduced. Upstream portion 21b of Since it is arranged it is open to the inner surface of the water inlet passage 21, so that the same operational advantages as the mixing attachment 10 of the first embodiment.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the attachment for mixing according to the present invention is not limited to the one that mixes and sends out body medicine such as bath medicine or skin care medicine into shower water, and is attached to other spraying equipment other than shower equipment. It is also possible to employ a liquid, gel-like, granular, solid, or other household consumer drug or agricultural chemical, etc., so as to be mixed with raw water. Further, it is not always necessary to provide a spiral flow generating means for generating a spiral flow inside the medicine storage chamber, and it is not always necessary to once narrow the inner diameter of the raw water inflow path upstream of the portion where the inlet of the raw water inflow path opens. .

  And according to this invention, as shown in FIG. 8, these attachments 10 and 80 which have the above-mentioned structure are used, interposing between a shower appliance and a shower water supply hose, for example. The mixing attachments 10 and 80 are integrally attached to the shower device 70, and may be used as the shower device 70 having a function capable of switching between a state in which the mixing agent flows out together with the shower water and a state in which only the shower water flows out. it can. That is, the mixing attachments 10 and 80 can be used by being attached to the shower device 70 together with the water purification unit 71 including, for example, a dechlorination filter through various known attachment means. Further, the mixing attachments 10 and 80 can be built in and attached to the shower device 70 so as not to be seen from the outside of the shower device 70.

It is a side view explaining the condition which attaches and uses the attachment for mixing which concerns on this invention to a shower apparatus. (A) And (b) is sectional drawing explaining the condition which mixes the chemical | medical agent for mixing with raw | natural water with the attachment for mixing which concerns on 1st Embodiment of this invention. It is a principal part expanded sectional view explaining the structure which arrange | positions the inflow port of the raw | natural water inflow path to a chemical | medical agent storage chamber in the upstream part of the part which restrict | squeezed the internal diameter of the raw | natural water main flow path. It is a front view explaining the slide latching mechanism in the mixing attachment which concerns on 1st Embodiment of this invention. (A) And (b) is sectional drawing explaining the condition which replenishes the chemical | medical agent for mixing to the attachment for mixing which concerns on 1st Embodiment of this invention. It is a schematic perspective view explaining the spiral flow generation means provided in the attachment for mixing which concerns on 1st Embodiment of this invention. (A) And (b) is sectional drawing explaining the condition which mixes the chemical | medical agent for mixing with raw | natural water with the attachment for mixing which concerns on 2nd Embodiment of this invention. It is sectional drawing which illustrates the shower fixture which attached the attachment for mixing which concerns on this invention integrally. It is a partially broken side view explaining the conventional mixing attachment.

Explanation of symbols

10, 80 Mixing attachments 11, 70 Shower device 12 Shower water supply hose 13 Upstream flow path 14 Downstream flow path 15 Drug storage chambers 16, 83 Raw water inflow path 16a Outer raw water inflow path 16b Inner raw water inflow paths 16c, 83c Raw water Inlet channel inlets 17, 84 Outlet channel 17a Outer channel 17b Inner channel 19 Inner cylinder (inner cylinder)
20 Outer cylinder (outer cylinder)
21 Raw water main channel 21a First reduced diameter portion (portion in which the inner diameter of the raw water main channel is reduced)
21b Inlet opening (upstream part of the narrowed inner diameter of the raw water main channel)
21c 2nd diameter-reduced part (the part by which the internal diameter of the upstream of the part which the inflow port of a raw | natural water inflow path opens is once restrict | squeezed)
22, 81 Upstream side blocking portion 23, 82 Downstream side blocking portion 28 Cover body 42, 43 Step surface 45 Inner side surface 85 of raw water main flow path (inlet opening) Upstream side communication hole 86 Downstream side communication hole 87 Inlet port 88, 90 Containment chamber side communication hole 89 Outlet

Claims (5)

The mixing agent provided between the upstream flow channel and the downstream flow channel and mixed in the raw water flowing in from the upstream flow channel is mixed with the raw water flowing in from the upstream flow channel while being mixed with the raw water. Attachment for mixing
It has an inner cylinder and an outer cylinder, the inside of the inner cylinder is a raw water main flow path, and the hollow portion between the inner cylinder and the outer cylinder is the drug storage chamber,
And, the raw water main flow path (first reduced diameter portion) inner diameter D1 is relative to the raw water main flow path inner diameter D2 of the portion (inlet opening portion) where the inlet of the raw water inflow passage into the drug storage chamber is open. small and Kuna',
The raw water inflow channel is an attachment for mixing provided including a portion extending obliquely from the inflow port on the inner side surface of the raw water main channel toward the medicine storage chamber . The raw water main flow path (second reduced diameter portion) inner diameter D3 immediately after the upstream side of the portion where the inlet opens is smaller than the inner diameter D2.
And the attachment for mixing of Claim 1 larger than the said internal diameter D1.   The mixing attachment according to claim 2, wherein the inflow port is opened outside an inner diameter D <b> 3 of the second reduced diameter portion. The attachment for mixing in any one of Claims 1-3 used by attaching to a chemical | medical agent dispersion instrument. A medicine spraying device to which the attachment for mixing according to any one of claims 1 to 4 is integrally attached.

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