JP2001218691A - Shower head with chlorine removal function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower head with chlorine removal function capable of cutting off water at the proximal end of a shower head and letting water flow, while mutually changing over raw water and dechlorinated water, and further, economically controlling the consumption of a chlorine neutralizer. SOLUTION: A container 10 filled with an aqueous solution of chlorine neutralizer is provided in a shower head body 1. A spout 15 pouring the aqueous solution into water passage 4 is provided in the container 10. A changeover valve 25 which can be changed over to a cut off condition, a conducting condition of raw water, and a conduction condition of dechlorinated water by manipulation from the outside is provided in the shower head body 1. Further, a shtter 20 opening the spout 15 when the changeover valve 25 is opened for conduction of the dechlorinated water, interlocked with the changeover valve 25, is also proivded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub or washroom provided with a chlorine removing function for neutralizing residual chlorine contained in tap water by mixing a chlorine neutralizing agent into tap water (including hot water). Related to a shower head installed and used in

[0002]

2. Description of the Related Art Tap water is mixed with chlorine for sterilizing and disinfecting various bacteria, and the Japanese water supply law stipulates that tap water discharged from a tap should contain at least 0.1 ppm of residual chlorine. It has become. Recently, the water quality in water sources such as rivers has tended to deteriorate, and O-1
A large amount of chlorine has been put into the sterilization of raw water due to the situation such as generation of 57 Escherichia coli and the like. Therefore, considerably large amount of residual chlorine is mixed in the tap water discharged from the tap. However, residual chlorine (especially free residual chlorine such as HOCl hypochlorite) contained in tap water has an adverse effect on human skin and hair, causing aging of the skin, bleaching and rusting of hair, and hair loss. It is said. It is also said that tap water containing residual chlorine has a chlorine odor and is not delicious to drink. Therefore, there is an increasing demand for removing residual chlorine from tap water used as bath water, shower water, drinking water, and cooking water.

[0003] Under such circumstances, a shower head having a dechlorination function having a function of neutralizing residual chlorine contained in tap water (referred to as chlorine removal or dechlorination) has recently been developed. For example, Japanese Patent Application Laid-Open No. 9-187681. No. has been applied for a patent. This type of shower head with a dechlorination function is configured such that a cartridge containing a chlorine neutralizing agent such as L-ascorbic acid (vitamin C) is attached to a grip portion or a head portion constituting the shower head, and a spout formed in the cartridge. The aqueous solution of the chlorine neutralizer is discharged into tap water flowing through a water passage in the shower head. According to such a showerhead, the chlorine neutralizer chemically reacts with the residual chlorine contained in the tap water to convert the residual chlorine into a harmless chlorine compound. Or hot water) is discharged from the water sprinkling hole at the head end.

[0004]

However, in the above shower head, since there is no water shutoff valve in the shower head body, if it is desired to temporarily stop water flow during use of the shower, reach the mixing tap. , The valve on the mixing tap must be closed. Such an operation is troublesome, and since the water is continuously supplied while reaching the mixing tap and closing the valve, there is a problem that the water is wasted.

On the other hand, in general, when cleaning a bathroom including a bathtub, a basin, a washing place, and the like, shower water discharged from a shower head is often used by utilizing the flexibility of a shower hose. However, when cleaning the bathroom, tap water containing chlorine is sufficient, and it is not always necessary to use dechlorinated water. On the other hand, when the shower head with the water purification function as described above is used, dechlorinated water is used even when cleaning the bathroom, and the water purification agent and the chlorine neutralizer are wasted. There is. For this reason, for example, utility model registration No. 30
No. 07614 proposes a switchable showerhead that can switch between raw water and dechlorinated water (called purified water) to spray water. However, in the conventional switching type shower head, a passage for the dechlorinated water and a passage for the raw water are separately formed in parallel, and these passages are selectively switched by a switching valve to selectively use the dechlorinated water and the raw water. I have. In such a structure, the structure is complicated because a plurality of passages must be formed, and the internal space of the shower head body is reduced to secure the plurality of passages.
When a container such as a cartridge containing a dechlorinating agent is housed in the shower head body, the volume of the container such as a cartridge becomes small, and thus the amount of the water purifying agent and the dechlorinating agent becomes small, and eventually the container is desorbed. There is a problem that the effective life for releasing chlorine water is shortened.

[0006] The present invention has been made in view of such circumstances, and the object thereof is to not only perform the water stop operation at hand of the shower head, but also to switch between raw water and chlorine-removed water to flow water. To provide a shower head with chlorine removal function that can share the raw water passage and the chlorine removal water passage, simplify the structure, and control the amount of chlorine neutralizer used without waste. Is what you do.

[0007]

In order to achieve the above object, the present invention has an inlet at one end to which a shower hose is connected, and a sprinkler hole at the other end for discharging shower water, and a water supply port between them. A shower head body provided with a water passage for flowing water, a container provided in the shower head body and filled with an aqueous solution of a chlorine neutralizing agent, and an aqueous solution in the container is poured into the water passage. A spout having a small opening area, provided in the shower head main body at a position upstream of the spout, and a closed state for stopping the water passage by an operation from the outside, for supplying the raw water. A switching valve that can be switched between an open state and an open state for passing dechlorinated water, and an opening and closing the spout in conjunction with the switching valve, wherein the switching valve is used to stop water. Closed state and raw water A shutter for closing the spout when each is in an open state for water and a shutter for opening the spout when the switching valve is in an open state for passing dechlorinated water. Provide a functional shower head. In such a configuration, when the switching valve is operated to the water stop position, the water passage is closed, so that the water flow stops. At this time, since the shutter closes the spout, the aqueous solution of the chlorine neutralizer in the container does not leak into the water passage. Further, when the switching valve is operated to the raw water position, the water passage is opened, so that the tap water flows. However, at this time, since the shutter closes the spout, the aqueous solution of the chlorine neutralizing agent is not mixed into the tap water, so that the tap water flows in the state of raw water. Further, when the switching valve is operated to the position of the dechlorinated water, the water passage is opened, so that the tap water flows. As a result, the tap water is passed as dechlorinated water in which chlorine is neutralized. That is, in the present invention, with one switching valve,
Since the switching of water stoppage, raw water and dechlorinated water can be performed, the usability is very good. Further, since the raw water passage and the dechlorinated water passage can be shared, the structure is simplified. In addition, since the spout is closed by the shutter when water is stopped, the aqueous solution of the chlorine neutralizer does not leak out, and the consumption of the chlorine neutralizer can be reduced. In addition, since the opening area of the spout formed in the container is made very small, the amount of the chlorine neutralizer aqueous solution that flows out of the spout can be regulated to an optimum amount according to the flow rate.

[0008] In a preferred aspect of the present invention, the shower head body automatically closes between the spout and the switching valve upon receiving water pressure when water is supplied, and opens automatically when water is stopped to remove water in the water passage. Is to provide a drain valve to discharge the water outside.
The invention according to claim 1 is based on the principle that a valve such as a mixing tap is closed when a shower is not used, and the water is stopped by operating a switching valve when water is temporarily stopped during use of the shower. . However, if the stop valve is closed by shutting off a valve such as a mixing tap with the switching valve in a state of flowing dechlorinated water, tap water remains in the water passage, and the spout is open despite the spout. The chlorine neutralizer will flow out into the residual water. On the other hand, if a drain valve is provided between the spout and the switching valve as described above, when the mixing valve is closed while the switching valve is in a state where dechlorinated water flows, a drain valve is provided. Works to discharge the residual water in the channel to the outside. For this reason, the water passage becomes an air atmosphere and has a pressure equivalent to the atmospheric pressure. At this time, the atmospheric pressure acts on the spout and the opening area of the spout is small, so that the surface tension acts to prevent the outflow of the aqueous solution in the container. Therefore,
When passing water, the required optimal amount of aqueous solution of chlorine neutralizer can be mixed into tap water, thus neutralizing residual chlorine in tap water flowing through the shower head and suppressing the harm of chlorine affecting hair and skin In addition, when the water is stopped, the chlorine neutralizer aqueous solution in the container does not flow out, so that useless use of the chlorine neutralizer can be prevented, and early consumption of the chlorine neutralizer can be prevented. it can.

In another preferred aspect of the present invention, the opening area of the spout is 1.0 mm ² or less and 0.01 mm ² or more. If the opening area of the spout exceeds 1.0 mm ² , the amount of the aqueous solution to be spouted becomes excessive with respect to the flow rate of water, and the use of the chlorine neutralizing agent is wasted. Becomes unstable. The opening area of the spout is preferably, 0.8 mm ² or less 0.02 mm ²
The above is good. Further, a further preferred embodiment of the present invention is:
The container is a cartridge that is detachable from the shower head body. In this way, if the aqueous solution of the chlorine neutralizing agent in the cartridge runs out, the cartridge can be replaced and used. In this case, it is preferable that the shower head main body is configured such that the head portion and the grip portion are detachably connected to each other, and the cartridge is detachably housed in the grip portion. With such a structure, a large amount of the chlorine neutralizing agent can be stored in the cartridge, the chlorine removal function of the shower head can be lengthened, and the installation space for the drain valve can be easily secured. . In addition, shower heads, including ordinary households,
The present invention can be used for shower heads in various fields such as shower facilities and washrooms in inns, hotels, swimming pools, hospitals, etc., and showers for hair washing in beauty salons, barbers and the like. In addition, as a chlorine neutralizer, in addition to L-ascorbic acid (vitamin C), sodium ascorbate,
Other ascorbic acids, calcium sulfite, sodium sulfite and the like are suitable, but L-ascorbic acid, sodium ascorbate and other ascorbic acids are preferred. In the present invention, an aqueous solution of a chlorine neutralizing agent is contained in the container, and the aqueous solution is preferably a saturated aqueous solution of the chlorine neutralizing agent. In this case, an aqueous solution may be generated by storing the powder or granules of the chlorine neutralizer and water in a container, and dissolving the powder or granules of the chlorine neutralizer with water. Further, the chlorine neutralizer may be stored in excess, and may be dissolved by tap water entering from outside.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a side view of a partially sectioned shower head, FIG. 2 is an enlarged longitudinal sectional view showing a main part formed at a lower end portion of the shower head, FIG. (AA) is a plan view of a movable valve constituting a switching valve, FIG. 4 (B) is a plan view of a fixed valve constituting a switching valve, FIGS. 5 (A), (B), and (C).
The figure is a diagram showing states of water stoppage, raw water flow, and dechlorinated water flow of the switching valve, respectively. In the figure, reference numeral 1 denotes a shower head main body, and the shower head main body 1 includes a grip portion 2 and a head portion 3. The grip portion 2 and the head portion 3 are each formed of, for example, a transparent resin, and are detachably connected to each other by means such as screws or bayonet coupling (not shown). The grip portion 2 has a hollow cylindrical shape, and has a water passage 4 formed therein. The water passage 4 is connected to a shower hose (not shown) through an inlet 5 at a base end portion. Head part 3
Is connected to the water passage 4 of the grip portion 2,
A sprinkling plate 6 is attached to the tip. A large number of water spray holes 7 are formed in the water spray plate 6 over the entire surface, and shower water is discharged from these water spray holes 7. The sprinkling plate 6
Is detachably attached to the head portion 3 by a holding ring 8.

In the water passage 4 of the grip portion 2, a cartridge 10 corresponding to the container of the present invention is accommodated. The cartridge 10 has a cylindrical shape with a sealed structure in which both ends are closed, and is formed transparent with a synthetic resin or the like so that the inside can be seen through. The cartridge 10 is filled with an aqueous solution of vitamin C as a chlorine neutralizer. In this case, the vitamin C granules 11 and water are accommodated in the cartridge 10, and the vitamin C granules are dissolved in the water to form a saturated aqueous solution. It is contained in excess of the amount that can be melted. The cartridge 10 is formed with a single flow path 12 that is located at the center and extends vertically.
Tap water flowing from the inlet 5 flows through the flow path 12. Therefore, the flow path 12 substantially forms a water passage. At the lower part of the cartridge 10, a step 13 is formed at the entrance (upstream end) of the flow path 12, and the flow path diameter is increased to the upstream side of the step 13. A diameter portion 14 is formed.
A single spout 15 is formed in the side wall of the enlarged diameter portion 14. The spout 15 is a hole having a diameter of about 0.5 mm,
The opening area is about 0.2 mm ² .

In the cartridge 10, a strainer 16 made of a water-permeable nonwoven fabric or a mesh sheet is attached at the step portion 13, and the granules of the vitamin C are located above the strainer 16 in the drawing. 11, and an aqueous solution chamber 17 is formed below. The aqueous solution chamber 17 stores a saturated aqueous solution of vitamin C (a high-concentration vitamin C solution), and the outlet 15 communicates with the aqueous solution chamber 17. In other words, the strainer 16 regulates the vitamin C granules 11 loaded above so as not to flow into the aqueous solution chamber 17, but allows the water and the vitamin C aqueous solution to pass. Such a cartridge 10 is removably fitted to the grip 2 of the shower head.
At the time of this insertion, the grip part 2 and the head part 3 are separated,
The cartridge 10 is inserted from the upper end opening of the grip portion 2, and the cartridge 10 housed in the grip portion 2 is pressed by the end 18 of the head portion 3 so as not to move.

The enlarged diameter portion 14 of the cartridge 10 includes
As shown in FIGS. 2 and 3, the shutter 20 is rotatably fitted. The shutter 20 has, for example, a cylindrical shape, and is inserted into the inner surface of the enlarged diameter portion 14 so as to be able to slide and rotate. An opening 21 is formed at one position on the peripheral wall of the shutter 20. The opening 21 faces the spout 15 when the shutter 20 is rotated to a predetermined position. 15 is opened. When the shutter 20 is in the other rotation position, the opening 21 is in a position not facing the spout 15, so that the spout 15 is closed. The opening 21 is formed larger than the spout 15. In this case, the opening 21 may be formed in a slit shape extending in the axial direction of the shutter 20. At the lower end of the shutter 20, a plurality of connecting legs 22 are extended, and these connecting legs 22 are connected to a switching valve 25 described later.

The switching valve 25 will be described. The grip 10 of the shower head body 1 includes the cartridge 10
A switching valve 25 is provided on the upstream side, that is, below the figure. The switching valve 25 is composed of a fixed seat 26 and a rotary valve body 27 as shown in FIGS. The fixed seat 26 is fixed to the grip portion 2 in a liquid-tight manner.
(B) As shown in the figure, a plurality of (three in this example) arc-shaped passage holes 28 are provided. A rotating valve body 27 is provided on the upper surface (or lower surface) of the fixed seat 26 in a liquid-tight manner. As shown in FIG. 4A, a plurality of circular communication holes 29 are formed in the rotary valve body 27. The rotary valve 27 is rotatably and slidably attached to the fixed seat 26 by, for example, a support shaft 30 provided at a central portion. A switching lever 3 is provided around the rotary valve body 27.
The switching lever 31 can be rotated outside the grip portion 2 in the circumferential direction of the grip portion 2. Therefore, when the operation lever 31 is turned, the turning valve 27 also turns integrally. In this case, the operation lever 31 can rotate to three positions, a water stop position, a raw water position, and a dechlorinated water. When the operation lever 31 is operated to the water stop position, FIG. As shown in (2), the communication hole 29 of the rotary valve body 27 is located at a position not facing the passage hole 28 of the fixed seat 26, and the passage hole 28 is closed.
Therefore, the water passage 4 is closed, and water does not flow in the shower head main body 1. When the operation lever 31 is rotated to the raw water position, as shown in FIG. 5 (B), the communication hole 29 of the rotary valve body 27 and the passage hole 28 of the fixed seat 26 are located at opposing positions. 28 is opened. Therefore, the water passage 4 is opened, and water flows into the shower head body 1. When the operation lever 31 is rotated to the position of the dechlorinated water, as shown in FIG.
The communication hole 29 of the fixed seat 26 and the passage hole 28 of the fixed seat 26 keep facing each other, so that the passage hole 28 is kept open. Also at this time, the water passage 4 is opened and water flows into the shower head main body 1. The plurality of connecting legs 22 connected to the lower end of the shutter 20 are integrally or integrally connected to the rotary valve body 27 of the switching valve 25.
When the shutter 7 is turned, the shutter 20 also turns integrally.
When the operation lever 31 is rotated to the position of the dechlorinated water, the shutter 20 rotates in conjunction with the rotation valve body 27, and the opening 21 provided in the shutter 20 faces the spout 15. Then, the spout 15 is opened. Therefore, when the switching valve 25 is at the position of the dechlorinated water,
When the water passage 4 is opened, water flows into the shower head main body 1, and at the same time, an aqueous solution of vitamin C flows out of the spout 15 of the cartridge 10 into the circulation 12, that is, into the water passage 4.

Further, in this embodiment, a drain valve 40 is provided between the switching valve 25 and the cartridge 15. The structure of the drain valve 40 will be described with reference to FIGS. 2 and 3. A drain hole 41 is opened in the side wall of the grip portion 2. Although one drain hole 41 may be provided, two drain holes 41 are formed at symmetric positions in this example. A valve seat 42 is provided in the grip portion 2 below the cartridge 10 in a liquid-tight manner. The valve seat 42 has a central portion opened, a guide space 43 communicating with the drain hole 41 formed around the valve seat 42, and a discharge port 44 communicating with the guide space 43 on the lower surface. I have. Below the valve seat 42, a sliding valve body 45 is provided slidably in the vertical direction. The sliding valve body 45 has a disk shape with an opening at the center, and has a peripheral edge detachably contacting the lower surface of the valve seat 42. A spring 46 is bridged between the sliding valve body 45 and the valve seat 42, and the spring 46 constantly connects the sliding valve body 45 to the valve seat 42.
, That is, downward. When water flows through the shower head, a water pressure is applied to the sliding valve body 45, and the sliding pressure moves the sliding valve body 45 toward the valve seat 42 against the pressing force of the spring 46, and comes into contact with the valve seat 42. Thereby, the sliding valve body 45 closes the discharge port 44. Further, when the flow of water is stopped, the water pressure does not act on the sliding valve body 45, and the sliding valve body 45 is separated from the valve seat 42 by the force of the spring 46,
Therefore, the discharge port 44 is opened. The sliding valve body 45 may be formed of metal or synthetic resin.
It may be made of synthetic rubber such as rubber or elastomer in order to enhance the sealing performance. Further, the sliding valve body 45 pressed by the spring 46 comes into contact with, for example, a stopper 47 formed on the movable valve body 27 so that the sliding stroke thereof is regulated.

The operation of the shower head having such a structure will be described. Before using the shower head,
Vitamin C granules 11 are filled above the strainer 16 in the cartridge 10, but contain no water and air is contained in the cartridge 10. When such a shower head body 1 is connected to a shower hose (not shown) and a valve of a water tap (not shown) at the base of the shower hose is opened, tap water (or hot water) is supplied.
Is supplied to the shower head body 1 through a shower hose. At this time, when the switching lever 31 is operated to the position of the dechlorinated water, the switching valve 25 is opened, so that the tap water flowing into the shower head main body 1 passes through the switching valve 25 and the flow path 12 in the cartridge 10 and passes through the head section. 3 and watering plate 6
The shower water is sprayed from the water spray hole 7 to the outside.

By the way, air remains in the cartridge 10 before use, and the pressure is equal to the atmospheric pressure. However, when water is passed through the shower head and the spout 15 is opened at the same time, that is, dechlorinated water flows. In this state, the pressure of the tap water flowing through the flow channel 12 is higher than the atmospheric pressure, and a part of the water flows into the cartridge 10 through the spout 15 due to the pressure difference. In particular, in the enlarged diameter portion 14, the flowing water speed decreases, so that the pressure increases, and this water pressure acts on the water injection port 15. Therefore, a part of the water flow enters the cartridge 10 from the spout 15. Then, the pressure in the cartridge 10 increases, and the air inside the cartridge 10 is compressed. However, the air tends to collect at the top of the cartridge 10 because it is light. At this time, if the shower head is turned upside down from the illustrated position, the air in the cartridge 10 gathers upward because the spout 15 is located above, and the spout 15
Through the flow path 12. In this way, the air in the cartridge 10 can be evacuated, so that the inside can be filled with water. When water enters the cartridge 10 in this manner, the water dissolves the granules 1 of vitamin C to form an aqueous solution of vitamin C. Therefore, the inside of the cartridge 10 is filled with the aqueous solution of vitamin C. The preparation for using the shower head is thus completed. Note that the vitamin C granules 11 are excessively loaded so that the whole amount does not dissolve with the amount of water when water is first injected into the cartridge 10, and therefore, at this time, the excess vitamin C granules 1
1 remains undissolved.

When a shower is used for bathing or the like, tap water (or hot water) is supplied to the shower head body 1 through a shower hose when a valve of a water tap is opened. Then, when the switching lever 31 is operated to the position of the dechlorinated water shown in FIG. 5C, the switching valve 25 is opened, and therefore, as shown in FIG. Then, the water passes through the flow path 12 in the cartridge 10 and reaches the head portion 3, and is sprayed as shower water from the water spray holes 7 of the water spray plate 6 to the outside. At this time, since the opening 21 of the shutter 20 opens the spout 15, the aqueous solution of vitamin C in the cartridge 10 is poured through the spout 15.
More specifically, when tap water flows into the flow path 12 and the spout 15 is opened, the flow difference is caused by the pressure difference between the tap water and the vitamin C aqueous solution, the concentration difference, the flow rate of the passage 12, the diffusion action, and other effects. Water in the channel 12 enters the cartridge 10 through the spout 15. The aqueous solution of vitamin C in the cartridge 10 is replaced by the spout 1
5, and is discharged into the flow channel 12. From outlet 14 to channel 1
The aqueous solution of vitamin C that has flowed out in Step 2 mixes with tap water,
It reacts with the free residual chlorine contained in tap water and neutralizes it. Therefore, the shower water injected from the water sprinkling holes 7 is water from which residual chlorine has been removed. The amount of the aqueous solution poured from the outlet 15 into the flow channel 12 is affected by the size of the outlet 15, and in this embodiment, the diameter is 0.5 m.
The hole is about m in diameter, and the opening area is about 0.2 mm ² to obtain a necessary and appropriate amount of pouring. The opening area is a size empirically obtained by an experiment performed by the present inventors. The flow of the vitamin C aqueous solution from the cartridge 10 and the flow of water into the cartridge 10 occur simultaneously, and the amount of liquid in the cartridge 10 does not decrease, and the tap water flowing into the cartridge 10 contains undissolved vitamin C. The granules 11 are dissolved to form a saturated aqueous solution.

On the other hand, in the case of cleaning the bathroom, for example, when it is desired to supply the tap water, the switching lever 31 is operated to the position of the tap water shown in FIG. 5B. Then, although the switching valve 25 remains open, the shutter 20 rotates and the opening 21 moves to a position not facing the spout 15, and the vitamin C aqueous solution does not flow out of the cartridge 10. Therefore, the tap water flowing into the shower head main body 1 is supplied to the switching valve 25,
The water passes through the flow path 12 in the cartridge 10 to reach the head portion 3, and becomes shower water from the water spray holes 7 of the water spray plate 6 and is sprayed to the outside. At this time, since the aqueous vitamin C solution is not poured, the shower water is It will be released as it is.

Further, when it is desired to stop the water supply at hand while using the shower, the switching lever 31 is operated to the water stop position shown in FIG. 5 (A). Then, since the switching valve 25 is closed, the tap water flowing into the shower head main body 1 is supplied to the switching valve 25.
And does not reach the flow path 12 or the head section 3 in the cartridge 10, and is not sprayed from the spray holes 7 of the spray plate 6.
That is, the water is stopped. Therefore, the trouble of reaching and operating the valve of the water faucet is eliminated. At the time of stopping the water, the opening 21 of the shutter 20 has moved to a position not facing the spout 15, so that the aqueous solution of vitamin C does not flow out of the cartridge 10. Therefore, even if tap water remains in the shower head body 1, vitamin C is not mixed into the remaining water. That is, unnecessary outflow of vitamin C is prevented, and consumption of vitamin C can be suppressed.

In this embodiment, the cartridge 10
The drain valve 40 is provided between the switch head 25 and the switching valve 25, so that when the water stops, the drain valve 40 is operated and the shower head main body 1 is turned off.
Remove the tap water inside. That is, when the raw water and the dechlorinated water are passed, as shown in FIG.
Is applied to the sliding valve body 45, and the sliding pressure causes the sliding valve body 45 to move toward the valve seat 42 against the force of the spring 46 and abut on the valve seat 42. As a result, the outlet 44 is closed, so that the water flowing through the water passage 4 is not discharged from the drain hole 41 but passes through the flow path 12 of the cartridge 10 and is sprayed from the water spray hole 6 of the head 3. . Next, when the switching lever 31 is switched to the water stop position in order to stop water flow, the switching valve 2
5 is closed and the water going to the cartridge 10 is shut off. At this time, since the pressure in the shower head downstream of the switching valve 25 becomes equal to the atmospheric pressure, no water pressure acts on the sliding valve body 45 of the drain valve 40. As shown in FIG. 3, the spring 46 pushes the valve seat 42 away from the valve seat 42, and the outlet 44 is opened. As a result, the water remaining at a position above the outlet 44 is discharged to the outside through the drainage hole 41 through the outlet 44 and the guide space 43, and no water remains in the flow path 12. In addition, when the water is stopped, the shutter 20 is set to the spout 15 as described above.
, The aqueous solution of vitamin C does not flow out of the cartridge 10. Therefore, vitamin C in the residual water
Are not mixed, and unnecessary outflow of vitamin C is prevented, and consumption of vitamin C can be suppressed.

In the case of a shower head having the above-described switching valve 25, the switching lever 31 is kept at the dechlorinated water position, that is, the switching valve 25 is opened and the spout 1 is opened.
In some cases, the hydrant valve may be closed with 5 open. In this case, water remains in the shower head main body 1 and the shower hose with the spout 15 opened. Therefore, there is a concern that the aqueous solution of vitamin C leaks from the cartridge 10 through the spout 15 into the flow channel 12 and the vitamin C flows out unnecessarily. However, in this embodiment, since the drain valve 40 is provided, consumption of vitamin C can be suppressed. That is, when the valve of the water tap is closed, the pressure in the shower hose and the shower head becomes equal to the atmospheric pressure because the switching valve 25 is open, and the water pressure acts on the sliding valve body 45 of the drain valve 40. And the sliding valve body 45 is pushed by the spring 46 to move further away from the valve seat 42 to open the discharge port 44. Therefore, the water remaining at the upper position from the discharge port 44 is discharged to the outside through the drain hole 41 through the discharge port 44 and the guide space 43, and no water remains in the flow path 12. Therefore, air enters the space in the head section 3 and the flow path 12. In this state, the outlet 15 of the cartridge 10 faces the air, and the
Even if the aqueous solution inside the cartridge 10 is to be poured out from the outlet 15, the inside of the cartridge 10 becomes a negative pressure, so that the discharging of the aqueous solution is prevented,
In addition, atmospheric pressure acts on the outlet 15 and the outlet 15
Since the surface tension is generated on the surface of the aqueous solution, the ejection of the aqueous solution from the cartridge 10 is prevented. That is, channel 1
By eliminating the water in step 2, the spout 14 is automatically closed, thereby preventing the aqueous solution in the cartridge 10 from leaking into the flow path 12 during the stoppage of water supply. Become. Thus, leakage of the vitamin C aqueous solution can be prevented, and wasteful consumption of vitamin C can be avoided.

In the shower head having the above-described structure, the cartridge 10 can be seen through from the outside, and the grip portion 2 containing the cartridge 10 can be seen through from the outside. C granules 11 are visible. Therefore, the remaining amount of vitamin C can be visually recognized from the outside, and the cartridge 10 can be replaced when the remaining amount is exhausted. In this case, the head portion 3 is removed from the grip portion 2, and the cartridge 1 is opened through the upper end opening portion of the grip portion 2.
An exchange of zeros can be made.

In the above embodiment, the switching valve 25 is rotated to open and close the water passage 4, and the shutter 20 is also rotated to open and close the spout 15. To open and close the water passage, and move the shutter in the axial direction to open and close the spout, or may have another structure.

[0025]

As described above, according to the present invention, not only the switching valve provided on the shower head body can be used to stop the water at hand, but also the shutter can be linked to this switching valve to stop the water stoppage and the raw water. In addition, it becomes possible to switch the dechlorinated water, and the usability is greatly improved. Moreover, in this case, since the raw water passage and the dechlorinated water passage can be shared, the structure is simplified. When the water is stopped, the spout is closed by the shutter, so that the aqueous solution of the chlorine neutralizer does not leak out, and the consumption of the chlorine neutralizer can be reduced. Furthermore, since the opening area of the spout formed in the container is very small, it is possible to regulate the amount of the chlorine neutralizer aqueous solution that flows out of the spout to an optimum amount according to the flow rate. For this reason, unnecessary consumption of the aqueous solution of the chlorine neutralizing agent can be avoided, and the chlorine neutralizing effect can be exerted for a long period of time.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention and showing a partial cross section of a shower head.

FIG. 2 is an enlarged longitudinal sectional view showing a main part of the embodiment and showing a state of passage of dechlorinated water.

FIG. 3 is a longitudinal sectional view showing a water stop state of the main part.

4A and 4B show the structure of a switching valve, wherein FIG. 4A is a plan view of a rotary valve body, and FIG.

5A and 5B show the operation of the switching valve, FIG. 5A is a plan view showing a water stop state, FIG. 5B is a plan view showing a raw water flow state, and FIG.
The figure shows a plan view of the dechlorinated ice

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Shower head main body 2 ... Grip part 3 ... Head part 4 ... Water passage 5 ... Inlet 6 ... Watering hole 10 ... Cartridge 11 ... Vitamin C granules 12 ... Flow path 15 ... Outlet 20 ... Shutter 21 ... Opening hole 22 ... Connecting leg 25 ... Switching valve 26 ... Fixed seat 27 ... Rotating valve element 31 ... Switching lever 40 ... Drain valve 41 ... Drain hole 42 ... Valve seat 45 ... Sliding valve element 46 ... Spring

Claims (6)

[Claims] 1. An end having an inlet to which a shower hose is connected and a sprinkler hole at the other end for discharging shower water,
A shower head body having a water passage for flowing tap water between them; a container provided in the shower head body and filled with an aqueous solution of a chlorine neutralizing agent; A spout having a small opening area to be poured into the water channel, and provided in the shower head body located upstream of the spout, in a closed state for stopping water by an external operation, A switching valve that can be switched to an open state for opening the dechlorinated water and an open state for passing dechlorinated water, and the switching valve is provided so as to open and close the spout in conjunction with the switching valve. A shutter for opening the outlet when the switching valve is in an open state for passing dechlorinated water, and closing the outlet when the valve is in a closed state and in an open state for passing raw water. , Chlorine removal function shower head, characterized by Bei was. 2. A water pressure between the outlet and the switching valve is automatically closed upon receiving water pressure when water is supplied, and automatically opened when water is stopped to discharge water in the water passage outside the shower head body. The shower head with a chlorine removing function according to claim 2, wherein a drain valve is provided. 3. An opening area of said spout is not more than 1.0 mm ^{2 and not} less than 0.01 mm ^2.
Or the shower head with a chlorine removal function according to claim 2. 4. The shower head with a chlorine removing function according to claim 1, wherein the container is a cartridge detachable from a shower head main body. 5. The shower head body according to claim 4, wherein the head portion and the grip portion are detachably connected to each other, and the cartridge is detachably housed in the grip portion. Shower head with chlorine removal function. 6. The chlorine neutralizing agent is L-ascorbic acid or L-ascorbic acid.
The showerhead according to any one of claims 1 to 5, comprising ascorbic acids as a main component.