JP6871753B2 - Water treatment cartridge and shower head - Google Patents

Description

The present invention relates to a water treatment cartridge and a shower head.

The raw water supplied to the shower used in the bathroom, wash basin, barber shop, beauty salon, etc. of a general household is usually tap water. However, since tap water contains a large amount of residual chlorine, frequent washing of the hair and body with a shower may cause damage or discoloration of the hair or rough skin. As a shower head that solves the problem caused by residual chlorine, a shower head provided with a water treatment cartridge filled with a dechlorinating agent such as calcium sulfite having a dechlorinating function is known.

On the other hand, when a water treatment cartridge filled with a dechlorinating agent is stored in the shower head so that all the raw water passing through the shower head flows into the water treatment cartridge, the dechlorinating agent is consolidated on the outflow side. The pressure loss in the shower head becomes high, and water flow tends to be difficult. In addition, the desalting effect disappears in a short period of time due to the excessive outflow of the dechlorinating agent, and the effect cannot be stably maintained. As a shower head that solves such a problem, a shower head in which a bypass flow path is formed on the outside of the water treatment cartridge in the shower head is known.

For example, a water treatment cartridge is formed by forming a notch at the peripheral edge of a water flow control plate provided at the end of the cartridge body on the inflow side so that a gap is formed between the outer wall surface of the cartridge body and the inner wall surface of the shower head. (Patent Document 1). In addition, a squeezing plate having a water passage notch with a variable opening area formed around the portion where the water treatment cartridge is fitted is provided in the shower head, and the water passage path flowing through the water treatment cartridge and the water treatment cartridge A shower head forming a water passage path passing through the outside can be mentioned (Patent Document 2).

Japanese Unexamined Patent Publication No. 2002-282155 Japanese Unexamined Patent Publication No. 2002-79271

However, when the outer shape of the water treatment cartridge is formed in the shower head so that the bypass flow path is formed on the outside of the water treatment cartridge as in Patent Document 1, the outer shape of the water treatment cartridge is limited by this. Therefore, the design of the water treatment cartridge is deteriorated. On the other hand, when the structure of the shower head is such that the bypass flow path is formed on the outside of the water treatment cartridge as in Patent Document 2, the shower head is dedicated for forming the bypass flow path, and is therefore versatile. Decreases.

According to the present invention, a water treatment cartridge capable of sufficiently reducing pressure loss and stably maintaining a purification effect even in a shower head having no special structure for forming a bypass flow path without impairing design. , And a shower head using the water treatment cartridge.

The present invention has the following configurations.
[1] A cartridge main body housed in the shower head and a purifying agent stored in the cartridge main body are provided.
A water treatment cartridge in which a first flow path filled with the purifying agent and a second flow path in which the purifying agent does not exist are formed in the cartridge body.
[2] A tubular spacer member provided in the cartridge body is provided, and the purifying agent is filled inside the spacer member to form the first flow path, and the outside of the spacer member in the cartridge body. The water treatment cartridge according to [1], wherein is the second flow path.
[3] The water treatment cartridge according to [1] or [2], wherein the purifying agent is filled in the first flow path in a state of being stored in a bag made of a non-woven fabric.
[4] The water treatment cartridge according to any one of [1] to [3], wherein the purifying agent is calcium sulfite.
[5] The ratio of the cross-sectional area S1 of the first flow path to the total of the cross-sectional area S1 of the first flow path and the cross-sectional area S2 of the second flow path is 60 to 95%, [1] to The water treatment cartridge according to any one of [4].
[6] A shower head in which the water treatment cartridge according to any one of [1] to [5] is housed.
[7] The shower head according to [6], wherein the entire amount of raw water that has flowed into the shower head flows into the water treatment cartridge.

The water treatment cartridge of the present invention can sufficiently reduce the pressure loss even in a shower head that does not have a special structure for forming a bypass flow path without impairing the design, and stably maintains the purification effect. can do.
Even if the shower head of the present invention does not have a special structure for forming a bypass flow path, the pressure loss is sufficiently reduced and the purification effect is stably maintained.

It is a side view which showed an example of the water treatment cartridge of this invention. It is a top view of the water treatment cartridge of FIG. FIG. 5 is a sectional view taken along the line AA of the water treatment cartridge of FIG. It is BB sectional view of the water treatment cartridge of FIG. FIG. 2 is a sectional view taken along the line CC of the water treatment cartridge of FIG. It is a perspective view of the spacer member in the water treatment cartridge of FIG. It is sectional drawing which showed an example of the shower head of this invention. It is a figure which showed the measurement result of the residual chlorine concentration of the passing water with respect to the integrated flow rate of raw water in Example 1 and Comparative Example 1.

[Water treatment cartridge]
The water treatment cartridge of the present invention includes a cartridge body housed in the shower head and a purifying agent stored in the cartridge body. In the cartridge main body of the water treatment cartridge of the present invention, a first flow path filled with a purifying agent and a second flow path in which the purifying agent does not exist are formed.

Hereinafter, an example of the water treatment cartridge of the present invention will be described. As shown in FIGS. 1 to 5, the water treatment cartridge 100 of the present embodiment includes a cartridge main body 102, a purifying agent 104 housed in the cartridge main body 102, and a spacer member 106. The water treatment cartridge 100 is housed in the head portion of the shower head.

As shown in FIGS. 1 and 2, the cartridge main body 102 is a first plate portion having a disc shape in a plan view, which is provided so as to close one open end of the cylindrical body portion 110 and the body portion 110. It includes 112 and a second plate portion 114 having a disc-shaped bottom view, which is provided so as to close the other open end of the body portion 110. When the water treatment cartridge 100 is housed in the head portion of the shower head, the first plate portion 112 may face the primary side, the second plate portion 114 may face the secondary side, and the first plate portion 112 may face the secondary side. The second plate portion 114 may face the secondary side and the second plate portion 114 may face the primary side.

The first plate portion 112 has a curved shape so that the central portion when the first plate portion 112 is viewed from the outside side protrudes to the outside side. Similarly, the second plate portion 114 has a curved shape so that the central portion when the second plate portion 114 is viewed from the outside side protrudes to the outside side. By bending the first plate portion and the second plate portion in this way, it becomes easy to fill a sufficient amount of the purifying agent while making the water treatment cartridge compact.

In the first plate portion 112, a circular recess 115 is formed in the central portion when the first plate portion 112 is viewed from the outside, and a plurality of openings 116 are formed around the concave portion 115. Further, in the second plate portion 114, a circular recess 117 is formed in the central portion when the second plate portion 114 is viewed from the outside, and a plurality of openings 118 are formed around the concave portion 117. In a state where the water treatment cartridge 100 is housed in the head portion of the shower head, raw water flows in from either the opening 116 of the first plate portion 112 or the opening 118 of the second plate portion 114, passes through the inside, and the other. It is designed to flow out from the opening of.

The front view shape of the opening 116 and the opening 118 in this example is a circular shape. The front view shape of the openings formed in the first plate portion and the second plate portion is not limited to a circular shape, and may be, for example, an elliptical shape, a rectangular shape, or the like.
The plurality of openings 116 are arranged side by side in a plurality of rows so as to radiate from the central portion to the outer side in the radial direction when the first plate portion 112 is viewed from the outside. Similarly, the plurality of openings 118 are arranged side by side in a plurality of rows so as to radiate from the central portion to the outer side in the radial direction when the second plate portion 114 is viewed from the outside. The number and arrangement of the openings 116 and 118 are not particularly limited, and may be appropriately set so that the inflow or outflow of water can be smoothly performed. The front view shape, number, and arrangement of the openings 116 formed in the first plate portion 112 and the front view shape, number, and arrangement of the openings 118 formed in the second plate portion 114 may be the same or different. You may be.

As shown in FIGS. 3 to 5, inside the first plate portion 112, a first protruding portion 120 that rises in an annular shape along the body portion 110 from the side of the body portion 110 on the inner wall surface 112a of the first plate portion 112. Is provided.
The cross-sectional shape of the first protruding portion 120 is substantially triangular, and has a contact surface 120a perpendicular to the body portion 110 with which the first end surface 106a of the spacer member 106 described later in the length direction of the cylinder abuts. ing. The cross-sectional shape of the first protrusion 120 is not limited to a triangular shape but may be a rectangular shape or the like as long as the spacer member 106 can be firmly brought into contact with the cartridge body 102 and stably held in the cartridge body 102. ..

Similarly, a second protruding portion 122 that rises in an annular shape along the body portion 110 from the side of the body portion 110 on the inner wall surface 114a of the second plate portion 114 is provided inside the second plate portion 114.
The cross-sectional shape of the second protruding portion 122 is substantially triangular, and has a contact surface 122a perpendicular to the body portion 110 with which the second end surface 106b in the length direction of the spacer member 106, which will be described later, abuts. .. The cross-sectional shape of the second protruding portion 122 is not limited to a triangular shape as long as the second end surface 106b of the spacer member 106 is firmly brought into contact with the second end surface 106b and the spacer member 106 can be stably held in the cartridge body 102. , It may be rectangular or the like.

Further, filters may be attached to the inner wall surface 112a and the inner wall surface 114a so as to cover all the openings 116 and 118. As a result, leakage of fine powder of the purifying agent can be suppressed, and even when the flow rate is low, the inside of the water treatment cartridge can be filled with raw water, and the water purification effect can be more stabilized.

A step 127 formed of an annular recess is formed on the outer peripheral edge of the outer wall surface 112b of the first plate portion 112 over the entire circumference. Similarly, a step 128 formed of an annular recess is formed on the outer peripheral edge portion of the outer wall surface 114b of the second plate portion 114 over the entire circumference. These steps 127 and 128 are used to stabilize the water treatment cartridge 100 when it is stored in the shower head, as will be described later.

The cartridge body 102 of this example can be divided into a first member 130 and a second member 132. The first member 130 is a member formed by a first plate portion 112 and a side wall portion 134 forming a portion of the body portion 110 on the first plate portion 112 side. The second member 132 is a member formed by a second plate portion 114 and a side wall portion 136 forming a portion of the body portion 110 on the second plate portion 114 side.

The tip portion of the side wall portion 136 of the second member 132 is thinned so as to be recessed from the outside to the inside in the radial direction, and the ridge 138 protruding outward in the radial direction on the outer peripheral surface of the tip portion. Is provided over the entire circumference in the circumferential direction. The tip portion of the side wall portion 134 of the first member 130 is thinned so as to be recessed from the inside to the outside in the radial direction, and the recess 140 in which the protrusion 138 is fitted into the inner peripheral surface of the tip portion is formed. It is provided all around in the circumferential direction.

By attaching the first member 130 to the second member 132 so that the ridge 138 fits into the concave 140, the body 110 is formed by the side wall 134 of the first member 130 and the side wall 136 of the second member 132. It is formed and the cartridge body 102 is formed.

The material of the cartridge body 102 is not particularly limited, and a known material used for the water treatment cartridge housed in the shower head can be adopted. Specific examples thereof include heat-resistant resins such as polypropylene, polyphenylene ether, polyoxymethylene, polycarbonate, ABS, ASA, and PMP.

The manufacturing method of the cartridge body 102 is not particularly limited, and a known molding method such as injection molding can be adopted.

A tubular spacer member 106 is provided in the cartridge body 102. As shown in FIG. 6, the spacer member 106 includes a pair of plate-shaped first flat surface portions 150a and a second flat surface portion 150b, and a pair of plate-shaped first curved portions 152a and second curved portions 152b. There is. The first plane portion 150a and the second plane portion 150b are arranged in parallel so that their surfaces face each other. The first curved portion 152a is provided so as to connect one end portion of the first flat surface portion 150a and the second flat surface portion 150b, and is curved so as to project outward in an arc shape in a plan view. The second curved portion 152b is provided so as to connect the other ends of the first flat surface portion 150a and the second flat surface portion 150b, and is curved so as to project outward in an arc shape in a plan view.

The plan view shape of the spacer member 106 as viewed from the first end surface 106a side in the length direction of the cylinder is such that the short sides on both sides of the rectangle protrude outward in an arc shape. The arc shape seen from the first end surface 106a side of the first curved portion 152a and the second curved portion 152b coincides with a part of the ring shape of the first protruding portion 120 and the second protruding portion 122 of the cartridge main body 102. It has become.

As shown in FIGS. 3 to 5, the spacer member 106 is provided in the cartridge body 102 so that the length direction of the cylinder of the spacer member 106 is along the direction from the first plate portion 112 to the second plate portion 114. In the cartridge body 102, the first curved portion 152a and the second curved portion 152b on the first end surface 106a on the first plate portion 112 side of the spacer member 106 rise from the inner wall surface 112a of the first plate portion 112. It is in contact with the contact surface 120a of the protrusion 120. Further, the portion of the first curved portion 152a and the portion of the second curved portion 152b on the second end surface 106b on the second plate portion 114 side of the spacer member 106 rises from the inner wall surface 114a of the second plate portion 114 of the second protruding portion 122. It is in contact with the contact surface 122a. As a result, the spacer member 106 is stably held in the cartridge body 102.
In this example, the spacer member 106 can be rotated around the body portion 110 in the cartridge main body 102.

By providing the spacer member 106, a first flow path 154 inside the spacer member 106 and a second flow path 156 outside the spacer member 106 are formed inside the cartridge body 102 in the body 110. .. The space between the inner wall surface 110a of the body 110 and the first flat surface portion 150a of the spacer member 106 in the cartridge body 102 and the space between the inner wall surface 110a and the second flat surface portion 150b of the spacer member 106 are second. It becomes a flow path 156.

The first flow path 154 inside the spacer member 106 is filled with the purifying agent 104. On the other hand, the second flow path 156 outside the spacer member 106 is not filled with the purifying agent 104. As described above, in the water treatment cartridge 100, the first flow path 154 filled with the purifying agent 104 and the second flow path 156 in which the purifying agent 104 does not exist are formed in the cartridge main body 102. When the spacer member 106 rotates around the body portion 110 in the cartridge body 102, the positions of the first flow path 154 and the second flow path 156 also rotate accordingly.

In the water treatment cartridge of the present invention, as in this example, it is preferable to provide a spacer member in the cartridge body to form the first flow path and the second flow path. Thereby, the existing cartridge main body can be diverted to easily form the first flow path and the second flow path in the cartridge main body. Further, by filling the inside of the spacer member with a purifying agent to form the first flow path, it is easy to prevent the purifying agent from being unevenly distributed in the cartridge body. Further, the shape of the spacer member is not limited to the above-mentioned shape, and may be, for example, a cylindrical shape, a square tubular shape, or a triangular tubular shape.

The ratio of the cross-sectional area S1 of the first flow path 154 to the total of the cross-sectional area S1 of the first flow path 154 and the cross-sectional area S2 of the second flow path 156 is preferably 60 to 95%, more preferably 65 to 90%. It is preferable, and 70 to 85% is more preferable. When the ratio is within the above range, it becomes easy to maintain a sufficient purification effect while reducing the pressure loss.
The cross-sectional area S1 of the first flow path 154 means that the first flow path 154 is secondary to the primary flow path 154 on the most primary side of the first flow path 154 when the water treatment cartridge 100 is housed in the shower head. It means the area of the cross section cut in the direction perpendicular to the direction toward the side. Similarly, the cross-sectional area S2 of the second flow path 156 is the second flow path 156 from the primary side to the second on the most primary side of the second flow path 156 when the water treatment cartridge 100 is housed in the shower head. It means the area of the cross section cut in the direction perpendicular to the direction toward the next side. For example, when the water treatment cartridge 100 of this example is housed in the shower head so that the first plate portion 112 is on the primary side, the cross-sectional area S1 of the first flow path 154 is on the first end surface 106a side of the spacer member 106. The opening area of. Further, the cross-sectional area S2 of the second flow path 156 is the area of the circle formed at the outer edge of the first end surface 106a of the spacer member 106 from the area of the circle formed at the inner edge of the first protrusion 120. Is the area minus.

The ratio of the cross-sectional area of the first flow path to the total cross-sectional area of the first flow path and the cross-sectional area of the second flow path is from the primary side to the secondary side when the water treatment cartridge is housed in the shower head. It is preferable that the range of 60 to 95% is satisfied at any position in the direction toward. In the water treatment cartridge 100 of this example, the body 110 of the cartridge body 102 has a cylindrical shape, and the spacer member 106 has the same cylindrical shape in the length direction of the cylinder. Therefore, in the water treatment cartridge 100, the ratio of the cross-sectional area of the first flow path to the total of the cross-sectional area of the first flow path and the cross-sectional area of the second flow path is the primary side when stored in the shower head. It is the same at all positions in the direction from to the secondary side.

In this example, when the inner wall surface 112a of the first plate portion 112 of the cartridge main body 102 is viewed from the first plate portion 112 side, the region corresponding to the second flow path 156 in the inner wall surface 112a of the first plate portion 112 Four openings 116 are formed. Even if the spacer member 106 rotates around the body portion 110 in the cartridge body 102, there are always two or more openings 116 in the region of the inner wall surface 112a of the first plate portion 112 corresponding to the second flow path 156. It is preferably formed, and more preferably 4 to 12 pieces are formed. As a result, it becomes easy to sufficiently obtain the effect of reducing the pressure loss and stably maintaining the purification effect.

In this example, as shown in FIGS. 3 to 5, the purifying agent 104 is filled inside the spacer member 106, that is, in the first flow path 154 in a state of being housed in the bag body 108 made of non-woven fabric. In the present invention, as described above, it is preferable that the purifying agent is filled in the first flow path in a state of being housed in the bag body 108 made of non-woven fabric. As a result, it is easy to prevent the purifying agent filled in the first flow path from excessively flowing out from the first flow path and unexpectedly flowing into the second flow path. In addition, it is easy to prevent the purifying agent from being biased in the first flow path.

The material of the non-woven fabric forming the bag body 108 is not particularly limited, and those usually used for water treatment cartridges can be used, and examples thereof include nylon, polyester, polyethylene, polypropylene, and polyolefin. The material of the non-woven fabric may be one kind or two or more kinds.

As the purifying agent 104, a dechlorinating agent is preferable. The dechlorinating agent is not particularly limited, and examples thereof include calcium sulfite, ascorbic acid, and activated carbon. Among them, calcium sulfite is particularly preferable as the dechlorinating agent from the viewpoint of chlorine removal performance and handleability. As the dechlorinating agent, one type may be used alone, or two or more types may be used in combination.

The purifying agent 104 is not limited to the dechlorinating agent, and may be, for example, a water softening treatment material. Examples of the water softening treatment agent include ion exchange resins, ion exchange fibers, chelate fibers and the like. Examples of the cation exchange resin include a strong acid cation exchange resin having a strong acid group such as a sulfonic acid group, a weak acid cation exchange resin having a weak acid group such as a carboxy group, and the like. As the water softening treatment agent, one type may be used alone, or two or more types may be used in combination.

The purifying agent may contain a known functional additive. Examples of functional additives include odor removers (divinylbensen-based polymers, etc.), moisturizers (plant extracts, hyaluronic acid, collagen, etc.), refreshing agents (menthol, alum, etc.), and fragrances (rosewood, jasmine, lavender, etc.). Etc.) etc. As the functional addition material, one type may be used alone, or two or more types may be used in combination.

The filling amount of the purifying agent in the water treatment cartridge is preferably 10 to 20 g, more preferably 12 to 16 g. When the filling amount of the purifying agent is at least the lower limit value, a sufficient purifying effect can be easily obtained. When the filling amount of the purifying agent is not more than the upper limit value, the water treatment cartridge can be easily made compact.

As described above, in the water treatment cartridge of the present invention, a first flow path filled with a purifying agent and a second flow path in which the purifying agent does not exist are formed in the cartridge body. By forming the first flow path filled with the purifying agent and the second flow path in which the purifying agent does not exist, the pressure loss can be reduced and the purifying effect can be stably maintained. Further, in the present invention, since the second flow path (bypass flow path) is formed in the cartridge main body, it is not necessary to make the outside of the cartridge main body into a special shape, and the degree of freedom in the outer shape is high. The design is not impaired. Further, even if the shower head does not have a special structure for forming the bypass flow path, the pressure loss can be sufficiently reduced and the purification effect can be stably maintained.

The water treatment cartridge of the present invention is not limited to the water treatment cartridge 100 described above. For example, the body of the cartridge body is not limited to a cylindrical shape, and may be appropriately set according to the shape of the storage portion of the water treatment cartridge in the shower head, and may be a square cylinder or the like.
The water treatment cartridge of the present invention may have a spacer member integrally formed in the cartridge body. Further, the water treatment cartridge of the present invention may be stored in the grip portion of the shower head.

[shower head]
The shower head of the present invention is a shower head in which the water treatment cartridge of the present invention is housed. The shower head of the present invention can adopt a known embodiment except that the water treatment cartridge of the present invention is housed in the shower head.
Hereinafter, as an example of the shower head of the present invention, a shower head in which the above-mentioned water treatment cartridge 100 is housed will be described.

As shown in FIG. 7, the shower head 1 of the present embodiment includes a shower head main body 10, a shower cap 12, a water treatment cartridge 100, and a packing 16.

The shower head main body 10 includes a grip 18 and a head portion 20 provided at the tip of the grip 18.
The grip 18 is not particularly limited, and examples thereof include a grip 18 having a tubular shape that can be gripped so that the lower end portion can be connected to a shower hose or the like.

The head portion 20 has a circular shape when viewed from the front, and is provided so as to protrude toward the front side with respect to the grip 18. Inside the head portion 20, a storage portion 22 for accommodating the water treatment cartridge 100, which is composed of a hollow portion communicating with the flow path 18a in the grip 18, is formed.

A plurality of plate-shaped support portions 24 that abut and support the water treatment cartridge 100 stored in the storage portion 22 are provided on the back side of the storage portion 22 in the head portion 20. The plurality of support portions 24 are provided at intervals along the inner peripheral wall so as to project toward the center along the inner peripheral wall when the head portion 20 is viewed from the front. When the water treatment cartridge 100 is stored in the storage portion 22, the tip portion of the support portion 24 on the front side of the head portion 20 comes into contact with the water treatment cartridge 100.
The shape of the support portion is not limited to the plate shape. Further, the number of support portions is not particularly limited and can be appropriately determined. For example, on the back side of the storage portion 22 in the head portion 20, one support portion continuously formed over the entire circumference may be provided along the inner peripheral wall when the head portion 20 is viewed from the front.

The front end portion 28 of the head portion 20 is composed of a cylindrical first peripheral wall portion 30 and a cylindrical second peripheral wall portion 32 surrounding the first peripheral wall portion 30, and has a double structure over the entire circumference. There is. That is, the tip portion 28 of the head portion 20 has a double structure in which the first peripheral wall portion 30 and the second peripheral wall portion 32 are provided in this order from the inside when the head portion 20 is viewed from the front. The first peripheral wall portion 30 and the second peripheral wall portion 32 are provided apart from each other, and a gap is formed between them.

A plurality of ridges 34 extending in the circumferential direction are partially provided on the outer wall surface of the inner first peripheral wall portion 30. Further, a groove 36 is provided over the entire circumference on the tip side of the outer wall surface of the first peripheral wall portion 30 with respect to the ridge 34. An O-ring 38 is mounted on the groove 36.

The shower cap 12 includes a cylindrical side wall portion 40 and a disc-shaped sprinkler plate 42 provided so as to close the tip opening of the side wall portion 40. A plurality of recesses 44 corresponding to a plurality of ridges 34 provided on the first peripheral wall portion 30 of the head portion 20 are partially formed on the inner wall surface of the side wall portion 40 on the rear end side portion opposite to the sprinkler plate 42. It is provided in. The shape of the recess 44 when the inner wall surface of the side wall portion 40 is viewed from the front is a shape that extends from the edge of the side wall portion 40 opposite to the sprinkler plate 42 toward the sprinkler plate 42 and further bends vertically in the circumferential direction. ing.

The rear end side portion of the side wall portion 40 opposite to the sprinkler plate 42 is between the first peripheral wall portion 30 and the second peripheral wall portion 32 of the head portion 20 when the shower cap 12 is mounted on the front side of the head portion 20. Will be inserted into. At this time, the rear end side portion of the side wall portion 40 is placed between the first peripheral wall portion 30 and the second peripheral wall portion 32 so that the ridge 34 provided on the first peripheral wall portion 30 of the head portion 20 fits into the recess 44. insert. Then, the shower cap 12 is rotated in the circumferential direction, and the ridge 34 is moved to the back side of the portion extending in the circumferential direction in the recess 44. By fitting the ridge 34 into the recess 44 in this way, the shower cap 12 is locked in a state of being attached to the head portion 20.
Further, in this state, the space between the side wall portion 40 of the shower cap 12 and the first peripheral wall portion 30 of the head portion 20 is watertightly sealed by the O-ring 38.

In the present invention, the mounting structure of the shower cap to the head portion is preferably a bayonet type as in this example. If the mounting structure of the shower cap is a bayonet type, the shower cap can be easily attached and detached as compared with the attachment by screwing. Therefore, even if soap, shampoo, or the like adheres to the hands when replacing the cartridge, the shower cap can be easily removed and the cartridge can be replaced.

A plurality of watering holes 42a are formed in the watering plate 42. The number of sprinkler holes 42a in the sprinkler plate 42 is not particularly limited and can be appropriately determined. Further, the distribution pattern of the sprinkler holes 42a in the sprinkler plate 42 is not particularly limited, and a known pattern can be adopted.

The material of the shower head main body 10 and the shower cap 12 is not particularly limited, and known materials used for the shower head can be adopted. Specific examples thereof include heat-resistant resins having a softening point of 80 ° C. or higher, such as polypropylene, polyphenylene ether, polyoxymethylene, polycarbonate, ABS, ASA, and PMP, and metals such as stainless steel.
The manufacturing method of the shower head main body 10 and the shower cap 12 is not particularly limited, and a known molding method or the like can be adopted.

In this example, the water treatment cartridge 100 is stored in the storage portion 22 in the head portion 20 so that the first plate portion 112 faces the primary side. Further, in this state, the water treatment cartridge 100 is supported by abutting the tip portion of the support portion 24 provided in the head portion 20 against the water treatment cartridge 100 so as to fit into the step 127.
In the present invention, as described above, a step is provided on the outer surface of the head portion of the water treatment cartridge on the side facing the primary side, and the support portion provided in the head portion is brought into contact with the step to support the water treatment cartridge. It is preferable to do so. As a result, the water treatment cartridge is stably held in the head portion.

In the water treatment cartridge 100 of this example, even when the water treatment cartridge 100 is housed in the head portion 20 so that the second plate portion 114 faces the primary side, the support portion 24 comes into contact with the step 128 so as to fit into the step 128. Then, the water treatment cartridge 100 is stably held.

The packing 16 is an annular packing having a flat surface formed inside. The packing 16 serves to watertightly separate the primary side and the secondary side of the water treatment cartridge 100 in the head portion 20.
The packing 16 in this example is annular and has a pentagonal cross-sectional shape perpendicular to the annular shape. As described above, the packing 16 is a V-shaped packing having five flat surfaces, of which the two inner flat portions 16a and 16b are formed so as to protrude in a V shape in the cross section. The cross-sectional shape of the packing is not limited to a pentagonal shape as long as a flat surface portion is formed inside, and may be, for example, a quadrangular shape or a hexagonal shape.

In this example, the packing 16 is fixed so that the flat portion on the shower cap 12 side is in close contact with the flange portion formed on the peripheral edge of the sprinkler plate 42 in the shower cap 12. Further, when the shower cap 12 is attached with the water treatment cartridge 100 housed in the head portion 20, the packing 16 has a flat surface portion 16a on the back side inside the packing 16 which is the second of the body portion 110 of the water treatment cartridge 100. It is crimped over the entire circumference so as to be in close contact with the plate portion 114. As a result, the primary side and the secondary side of the water treatment cartridge 100 in the head portion 20 are watertightly isolated, and the raw water in the head portion 20 passes through the outside of the water treatment cartridge 100 and wraps around to the sprinkler plate 42 side. Be prevented.
In this example, the tip of the first peripheral wall portion 30 of the head portion 20 is crimped so as to be recessed into the flat surface portion on the back surface side of the packing 16. Therefore, water leakage from the gap between the head portion 20 and the shower cap 12 is more stably suppressed.

In this way, in the shower head 1, the entire amount of raw water that has flowed into the head portion 20 through the flow path 18a of the grip 18 flows into the water treatment cartridge 100. The raw water that has flowed into the cartridge body 102 from the opening 116 formed in the first plate portion 112 is divided into a first flow path 154 and a second flow path 156 in the cartridge body 102. In the first flow path 154, the raw water is purified by the purifying agent 104 and reaches the second plate portion 114 side. On the other hand, since the purifying agent 104 does not exist in the second flow path 156, the raw water reaches the second plate portion 114 side as it is. Then, the water that has passed through each of the first flow path 154 and the second flow path 156 flows out from the opening 118 formed in the second plate portion 114 to the outside of the water treatment cartridge 100, and the water sprinkling hole 42a of the sprinkler plate 42 Water is sprinkled like a shower.

In the present invention, since the second flow path (bypass flow path) is formed in the water treatment cartridge, as in this example, the entire amount of raw water flowing into the shower head passes through the inside of the water treatment cartridge. , It is preferable that the water treatment cartridge is housed in the shower head. This makes it easy to obtain a sufficient purifying effect by the purifying agent. Further, by making it possible to use the water treatment cartridge of the present invention and the conventional water treatment cartridge having no second flow path (bypass flow path) together, it is possible to select the water treatment cartridge whether or not to form the bypass flow path. Can be selected more easily.

In the shower head 1, since the water treatment cartridge 100 is housed in the head portion 20 of the shower head main body 10, the cartridge can be easily replaced and maintained by removing the shower cap 12.

Since the shower head of the present invention described above includes the water treatment cartridge of the present invention, the pressure loss is sufficiently reduced and the purification effect is stabilized even if it does not have a special structure for forming a bypass flow path. Is maintained.
The shower head of the present invention is not limited to the shower head 1 described above. For example, a support column is provided that projects from the center portion toward the front when the inner wall surface on the back surface side of the head portion 20 is viewed from the front, and the tip end portion of the support column is fitted into the recess 115 of the water treatment cartridge 100. The water treatment cartridge 100 may be supported.
Further, the shower head may be a shower head using an O-ring instead of the packing 16 in the shower head 1.

Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to the following description.
[Example 1]
Using the water treatment cartridge 100 illustrated in FIGS. 1 to 5, a spacer containing 12 g of calcium sulfite (product name "calcium sulfite (fine granules)", manufactured by Tomita Pharmaceutical Co., Ltd.) as a purifying agent 104 in a bag made of non-woven fabric. The inside of the member 106 was filled, and the cartridge main body 102 was formed with a first flow path 154 filled with the purifying agent 104 and a second flow path 156 in which the purifying agent 104 did not exist. As shown in FIG. 7, the water treatment cartridge 100 is stored in the storage portion 22 of the head portion 20 so that the first plate portion 112 faces the back side of the head portion 20 and the second plate portion 114 faces the sprinkler plate 42 side. And got the shower head 1.

[Comparative Example 1]
A shower head was obtained in the same manner as in Example 1 except that the purifying agent 104 was stored in the cartridge body 102 without providing the spacer member 106.

[Free residual chlorine reduction ability test]
Water was passed through the shower heads of each example at a constant flow rate of 8 L / min, and the free residual chlorine removal rate (JWPAS J.210) was measured. The free residual chlorine removal rate was calculated by measuring the concentration of free residual chlorine contained in the water after passing water by the DPD absorptiometry. As the raw water, water adjusted to a free residual chlorine concentration of 1 ± 0.1 mg / L and a water temperature of 40 ± 3 ° C. was used. For Example 1, the same test was performed a total of 3 times, and for Comparative Example 1, the same test was performed a total of 2 times. The results are shown in FIG.

As shown in FIG. 8, the integrated flow rate until the free residual chlorine in the passing water exceeds 0.5 mg / L was about 1,600 L in Comparative Example 1, but exceeded 3,000 L in Example 1. The desalination effect was maintained more stably.

1 ... Shower head, 20 ... Head part, 22 ... Storage part, 100 ... Water treatment cartridge, 102 ... Cartridge body, 104 ... Purifier, 106 ... Spacer member, 110 ... Body part, 112 ... First plate part, 114 ... 2nd plate part, 116, 118 ... opening, 120 ... first protruding part, 120a ... contact surface, 122 ... second protruding part, 122a ... contact surface, 154 ... first flow path, 156 ... second flow path ..

Claims (5)

A cartridge body stored in the shower head and a purifying agent stored in the cartridge body are provided.
In the cartridge body, a first flow path filled with the purifying agent and a second flow path in which the purifying agent does not exist are formed .
A tubular spacer member is provided in the cartridge body, the inside of the spacer member is filled with the purifying agent to form the first flow path, and the outside of the spacer member in the cartridge body is the second. As a flow path,
The purifying agent is filled in the first flow path in a state of being stored in a bag made of a non-woven fabric.
A water treatment cartridge in which the purifying agent contains calcium sulfite. The water treatment cartridge according to claim 1, wherein the cartridge body includes a first member and a second member, and can be divided into the first member and the second member. The first or second claim, wherein the ratio of the cross-sectional area S1 of the first flow path to the total of the cross-sectional area S1 of the first flow path and the cross-sectional area S2 of the second flow path is 60 to 95%. Water treatment cartridge. A shower head in which the water treatment cartridge according to any one of claims 1 to 3 is housed. The shower head according to claim 4 , wherein the entire amount of raw water that has flowed into the shower head flows into the water treatment cartridge.

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