JP2008208582A - Hot and cold water mixing valves for water combination faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot and cold water mixing valve for a water combination faucet incorporating a water purifying cartridge, having the satisfactory appearance, and capable of preventing a toxic substance from flowing out unexpectedly. <P>SOLUTION: This hot and cold water mixing valves for water combination faucet is provided with a water faucet body 10 provided with a hot water supply passage 20 and a cold water supply passage 21, a mixing valve (a first sliding valve device 30) capable of mixing the hot water supplied through the hot water supply passage 20 with the cold water supplied through the cold water supply passage 21 and draining the mixed water through a discharge port 30c, a water draining member (a water draining head 60) arranged in a condition in which it protrudes from the water faucet body 10 to open a water drain port, and the water purifying cartridge 70. In this water faucet, a water passage G for raw water for communicating the discharge port 30c and the water drain port mutually and a water passage J for purified water for communicating the cold water supply passage 21 and an intake port mutually are provided separately from each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hot and cold water mixing faucet.

In recent years, it has been practiced to integrate a water purifier (water purification cartridge) in a hot and cold water mixing faucet. For example, as shown in FIG. 11, a hot and cold water mixing faucet including a faucet body 80 and a water purifier 82 integrated on the side of the faucet body 80 has been proposed (Patent Document 1, hereinafter, "Conventional example"). The faucet body 80 incorporates a mixing valve capable of mixing hot water supplied from a hot water supply source using a hot water supply pipe 81H and water supplied from a water supply source using a water supply pipe 81C (illustrated). Omitted). Further, a water purification cartridge 82c is housed inside the water purifier 82.
JP-A-9-228437

  However, the hot and cold water mixing faucet according to this conventional example has a problem that the external appearance (look) is poor because the water purifier 82 is externally attached to the faucet body 80. Further, there is a problem that the installation space is increased by the amount of the water purifier 82 provided on the side of the faucet body 80.

  On the other hand, in order to solve such problems, the present inventor has completed a “hot-water mixed faucet (hereinafter referred to as“ improved example ”)” as shown below. That is, as shown in FIGS. 12 and 13, the hot and cold water mixing faucet according to this improved example incorporates a mixing valve 85 a capable of mixing hot water and water and has a support portion 85 b, and the support faucet body 85. A shower head 86 that is detachably supported by the portion 85a, and a shower hose 88 having a start end (end on the primary side) connected to the outlet of the mixing valve 85a.

  The shower head 86 according to this improved example includes a substantially cylindrical gripping portion 86a and a head portion 86b. In addition, a water purification cartridge 86j is inserted into the gripping portion 86a (inserted with play), and “in the gripping portion 86a, the water purification cartridge 86j is disposed on the primary side from the portion where the water purification cartridge 86j is disposed. The terminal portion (secondary side end portion) of the shower hose 88 is connected to the “positioned portion”. And, using the annular space portion formed between the inner wall portion of the gripping portion 86a and the outer wall portion of the water purification cartridge 86j, a “water discharge passage 86d for raw water” is configured, and the space inside the water purification cartridge 86j. The portion (space portion filled with the purification material) constitutes the “water discharge flow path 86e for water purification”.

  Further, the head portion 86b includes a shower face (water discharge port) 86k at an end portion and a valve device 86f for selecting a water discharge channel (water discharge channels 86d, 86e) and the like. Further, a plurality of operation buttons 86g and 86h for operating the valve device 86f are exposed from the outer surface portion of the head portion 86b. When the “raw water spouting operation button 86g” is operated, “hot water supplied through the shower hose 88” is spouted through the raw water spouting passage 86d and the shower face 86k. On the other hand, when the “purified water spouting operation button 86h” is operated, the “hot water supplied through the shower hose 88” is spouted through the water purifying water flow path 86e and the shower face 86k.

  In this way, the hot and cold water mixing faucet of this improved example has a structure in which the types of hot water discharged from the shower face 86k (purified water and raw water) are switched by the operation buttons 86g and 86h at the tip of the shower head 86. Further, the water flow path immediately before the “raw water discharge channel 86d” and the “purified water discharge channel 86e” is composed of “one shower hose 88”. Therefore, for example, “when the operation buttons 86g and 86h are operated incorrectly while hot water is discharged from the mixing valve 85a and the hot water is supplied from the shower hose 88” or “the shower hose 88”. In the case where hot water stays inside, the hot water may enter from “the intake 861j of the water purification cartridge 86j” toward “inside the water purification cartridge 86j”.

  In such a case, the hot water passes through the water purification cartridge 86j and is discharged from the shower face 86k. At this time, the following problems may occur. That is, the “hazardous substances (trihalomethane, etc.) already attached (adsorbed) to the purification material (activated carbon etc.) constituting the water purification cartridge 86j” are transferred from the shower face 86k together with hot water passing through the water purification cartridge 86j. There is a possibility of causing a malfunction that would result in leakage.

  From the above circumstances, it is necessary to further improve the hot and cold water mixing faucet according to this improved example. That is, it is necessary to solve the problems of the improved example while solving the problems of the conventional example.

  The present invention solves the above-mentioned problems, has a built-in water purification cartridge, has a good appearance (appearance), can reduce the installation space, and suppresses unplanned outflow of harmful substances. An object of the present invention is to provide a hot and cold water faucet.

The hot and cold water mixing faucet of the invention of claim 1
A faucet body comprising a hot water supply channel communicated with a hot water supply source and a water supply channel communicated with the water supply source;
A mixing valve disposed in the faucet body, mixing hot water supplied through the hot water supply channel and water supplied through the water supply channel at a predetermined mixing ratio, and capable of discharging through a discharge port;
A water discharge member disposed in a state protruding from the faucet body, and having a water discharge port opened at a predetermined site,
In the water discharge member, disposed at a location located on the primary side of the opening portion of the water discharge port, an intake portion of water supplied from the water supply source, and an extract portion of the purified water A water purification cartridge provided;
A hot and cold water faucet comprising:
A raw water passage for connecting the discharge port and the water discharge port and a water purification passage for connecting the water supply passage and the intake section are separately provided.

  In the hot and cold water mixing faucet according to the first aspect of the present invention, since the water purification cartridge is disposed in the water discharging member, the appearance (appearance) is good and the installation space can be saved. In addition, since the water passage for raw water and the water passage for water purification are isolated and each is a dedicated water passage, the “hot water passing through the water passage for raw water” is the intake part of the water purification cartridge (for example, , Does not flow into the intake). In other words, only the “water” that has flowed into the “water purification channel” through the water supply channel flows into the intake portion of the water purification cartridge. Therefore, according to the hot and cold water faucet of the invention of claim 1, it is possible to suppress the occurrence of the “problem that harmful substances (trihalomethane etc.) adhering to the purification material constituting the water purification cartridge flow out from the water outlet”. (In other words, it is possible to suppress unscheduled water discharge of harmful substances).

  In this specification, “mixed water” means “hot water (hot water supplied from a hot water source)” and “hot water” generated by mixing water (water supplied from a water source). Point to. In this specification, “hot water” refers to “hot water (hot water supplied from a hot water supply source)”, “water (water supplied from a water supply source)”, and “mixed water”. Furthermore, “raw water” means hot water (hot water, water, or mixed water) that will be discharged without passing through the “water purification cartridge” or “water purifier” (without being purified by the purification material). "Purified water" refers to "hot water (hot water, water, or mixed water) discharged through a water purification cartridge or water purifier".

  In the present specification, “purification treatment” refers to a treatment for removing unnecessary components such as “calcium” and harmful components such as trihalomethane from tap water to obtain purified water. In addition, the “water purification cartridge” of the invention of each claim may be composed of only the purification material, or may be provided with the purification material and an exterior body covering the purification material. (Filtration material) "(1) Purifying material constituted using activated carbon, (2) Purifying material constituted using hollow fiber membrane and activated carbon, (3) Constructed using ceramic and activated carbon Examples thereof include (4) a reverse osmosis membrane and a purification material constituted by using activated carbon.

  Examples of the “water discharge member” of the invention of each claim include a water discharge head (such as a shower head) and a water discharge pipe. Further, the water discharge port is usually provided at the terminal portion of the “water discharge member”. In the water discharge head (for example, a shower head), the water discharge port can be configured by a water discharge face (for example, a shower face). Moreover, when a water outlet is comprised by several parts (henceforth a "water outlet part"), all the "water outlet parts" may discharge raw water and purified water, or discharge raw water. The spout portion for discharging the purified water and the spout portion for discharging purified water may be provided separately.

In the invention of each claim, the mode of the mixing valve (that is, the valve device for temperature adjustment) can be variously selected, and various mixing valves such as a sliding disk type, a thermostat type, and a two-handle type can be exemplified. In addition, the mixing valve may select (i) the “raw water” discharge water, or (ii) “the raw water discharge water selection” and “the raw water discharge amount selection”. It may be what performs. In addition, (i) “Raw water” stop water is provided by a valve device (stop water valve) disposed on the secondary side of the mixing valve (in the middle of the water passage for raw water, or at the outlet). Or (ii) “selection of raw water discharge water” and “selection of raw water discharge amount”.

  In the invention of each claim, the primary side end portion of the “water purification channel” is always communicated with the intermediate portion of the water supply channel, and the “water purification valve” is connected to the middle portion of the water purification channel. An “apparatus” may be provided. In this case, by performing an operation (opening / closing operation) on the “valve device for water purification”, (c) “selection of clean water discharge water” or (d) “selection of clean water discharge water” It is also possible to perform “selection of water discharge amount of purified water”. That is, by performing an operation (opening / closing operation) on this “water purification valve device”, (c) “part located on the primary side of the water purification valve device in the water purification passage” and “ In the valve device for water purification, the portion located on the secondary side of the valve device for water purification may be alternatively communicated, or (b) “in the water passage for water purification, Adjusting the degree of communication between “the part located on the primary side of the valve device” and “the part located on the secondary side of the valve device for water purification in the water purification valve device” (may be non-communication) May be included).

  In the embodiment using this “valve device for water purification”, since “water of the required amount, water supply pressure” is always waiting on the primary side of the mixing valve, When trying to try, the temperature of the mixed water discharged from the water outlet can be immediately set to a desired temperature. That is, in the initial stage of discharging the mixed water, “unexpected hot water (hot water supplied from a hot water supply source or hot water having a temperature close to that)” is not discharged from the water outlet.

  In the invention of each claim, a “valve device for the water supply channel” may be disposed in the middle portion of the water supply channel. That is, the water supply channel is divided into a “primary water supply channel” located on the primary side of the intermediate portion and a “secondary water supply channel” positioned on the secondary side of the intermediate portion. For convenience, consider separately. In addition, the “primary water supply channel” and the “secondary water supply channel” are connected by the “water supply valve device”, and the “water supply valve device” Connect the end of the primary side of the “pipe for water purification”. Then, by performing an operation (opening / closing operation) on the “valve device for water supply channel”, (a) “selection of purified water discharge water” or (b) “selection of purified water discharge water” ”And“ selection of water discharge amount of clean water ”may be performed. In other words, by performing an operation (opening / closing operation) on the “valve device for the water supply channel”, (a) the primary water supply channel and the water purification channel are selectively communicated with each other. Alternatively, (b) the degree of communication between the primary water supply channel and the water purification channel may be adjusted (including non-communication).

  As this “valve device for water supply channel”, (A) the primary water supply channel unit and the secondary water supply channel unit are connected, and the primary side water supply channel unit and the water purification channel are connected. A state of non-communication, and (B) a state where the primary-side water supply channel and the secondary-side water-supply channel are made non-communication and communicated with the primary-side water-supply channel and the water-purifying channel. Is referred to as a “switching valve”. ) ". However, this “valve device for the water supply channel” connects the primary water supply channel unit and the secondary water supply channel unit to the primary side water supply channel unit and the water purification channel. It may be a “switching valve (hereinafter referred to as“ the latter switching valve ”)” that is in communication or non-communication. In addition, according to the “the latter switching valve”, “the water of the necessary amount and the supply water pressure” is always waiting in the secondary water supply channel section as in the above-mentioned “mode using the water purification valve device”. Therefore, when trying to “spout the mixed water at a predetermined temperature”, the temperature of the mixed water discharged from the spout can be immediately set to a desired temperature.

The hot and cold water mixing faucet of the invention of claim 2 is the hot water and water mixing tap of claim 1,
The water discharge channel connecting the take-out part and the water discharge port and the water flow channel for the raw water merge at a predetermined junction,
A check valve is disposed between the extraction portion and the merging portion.

  In the invention of claim 2, in the water discharge channel, the raw water and the purified water pass through a portion (hereinafter referred to as “common channel”) located between the junction and the water discharge port. That is, since “a part of the internal flow path” of the water discharge member is used for both raw water discharge and purified water discharge, the structure of the water discharge member can be simplified correspondingly. Moreover, in the invention of claim 2, since the check valve is provided, it is possible to prevent the raw water in the “common path” from flowing backward toward the “water purification cartridge”. That is, according to the second aspect of the invention, it is possible to prevent “backflow of raw water to the water purification cartridge” while simplifying the structure of the water discharging member.

The hot and cold water mixing faucet of the invention of claim 3 is the hot water and water mixing tap of claim 1,
A water discharge channel that communicates the extraction portion and the water discharge port is provided separately from the water flow channel for raw water.

  In the invention of claim 3, since the water discharge channel and the water channel for raw water are separated, it is possible to reliably prevent “raw water in the water channel for raw water from flowing backward toward the water purification cartridge”.

The hot and cold water mixing faucet of the invention of claim 4 is the hot water and water mixing tap according to any one of claims 1 to 3,
The faucet body includes a support portion that protrudes in an upwardly inclined manner and supports the proximal end portion of the water discharge member in an insertion manner,
The internal space of the support portion uses a partition wall to form a first water passage portion constituting a part of the raw water passage and a second water passage portion constituting a part of the water purification passage. Divided into
The water purification cartridge is inserted into the water discharge member in a state of being inserted into an outer case having an inflow port,
The inflow port and the second water passage portion are connected in a watertight manner, and a space portion formed between the outer wall portion of the outer case and the inner wall portion of the water discharge member is formed in the first water passage portion. It is characterized by watertight communication.

  According to the invention of claim 4, the “outer case” is used to constitute “a partition wall for isolating the water passage for raw water and the purification material”. Therefore, according to the invention of claim 4, it is not necessary to form “a partition wall for partitioning the internal space of the water discharging member” on the water discharging member, or to make the water discharging member have a double pipe structure. The internal structure of the can be simplified.

  As described above, according to each of the first to fourth aspects of the invention, the appearance (appearance) is good while incorporating the water purification cartridge, the installation space can be saved, and undesired outflow of harmful substances. It is possible to obtain a hot and cold water mixing faucet that can suppress the above.

  Next, the best mode (hereinafter referred to as “Example”) of the “hot-water mixed tap” according to the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the hot water / water mixing faucet S includes a faucet body 10, a first sliding valve device 30, a second sliding valve device 50, and a water discharge head 60. The water purification cartridge 70 is provided. As shown in FIG. 4, the hot and cold water mixing tap S is used by being installed on a deck portion (such as a sink top plate) D. Further, the hot water supply source H (terminal part of the hot water supply pipe) and the water supply source C (terminal part of the water supply pipe) reach below the deck part D (the top plate of the sink, etc.) D.

  The faucet body 10 is configured by using a casting, and as shown in FIG. 1, a main body portion 11 having a substantially cylindrical outer shape, and a substantially cylindrical shape, and protrudes upwardly from the outer peripheral portion of the main body portion 11. A support portion 12 and an attachment portion (see FIGS. 3 and 6) 13 that are formed in a substantially cylindrical shape and project laterally from the outer peripheral portion of the main body portion 11 are provided. As shown in FIG. 3, a female screw portion 12 a is provided on the outer peripheral portion of the support portion 12. A spacer 14 configured in a nut shape is screwed into the female screw portion 12a.

  As shown in FIG. 3, the internal space of the support portion 12 is divided into upper and lower portions using partition walls 12 b. That is, the internal space of the support portion 12 includes a space portion (hereinafter referred to as “upper space portion”) 12u located above the partition wall 12b and a space portion (hereinafter referred to as “lower space portion”) positioned below the partition wall 12b. It is divided into 12d. The partition 12b constitutes a specific example of the “partition” according to the invention of claim 4. A specific example of the “first water passage portion” of the invention of claim 4 is configured by the “upper space portion” 12u, and the “second water passage” of the invention of claim 4 is constituted by the “lower space portion”. A specific example of “part” is configured.

  The entire “upper space portion 12 u” is opened obliquely upward at the protruding end portion of the support portion 12, and a part of the lower space portion 12 d is opened obliquely upward at the protruding end portion of the support portion 12. That is, the lower space portion 12d is opened obliquely upward by the “substantially columnar connected portion 12e provided at the axial center position of the support portion 12”. Further, a substantially fan-shaped lid portion 12f is disposed in the remaining portion of the lower space portion 12d (the portion where the connected portion 12e is not provided). Further, a mounting groove is provided in the intermediate portion of the connected portion 12e, and a seal member (packing or the like) 12p is mounted in this mounting groove.

  As shown in FIG. 4, a hot water supply channel 20, a water supply channel 21, a branch channel 23, and a discharge channel 25 are provided inside the faucet body 10. In this embodiment, an internal flow path (a hot water supply path 20, a water supply path 21, a branch flow path 23, and a discharge flow path 25) is formed by a cavity (space) provided in the faucet body 10. The internal flow path of the faucet body 10 can also be configured using piping parts such as a hose and a pipe.

  As shown in FIG. 4, the hot water supply channel 20 has a primary end 20 a disposed below the main body 11, and a secondary end 20 b disposed above the main body 11. Yes. The “primary side end portion 20a of the hot water supply passage 20” and the hot water supply source H (terminal portion of the hot water supply pipe) are connected via a hot water supply intermediate pipe 26H. The “secondary end 20b of the hot water supply passage 20” is connected to a hot water supply port 30a of a “first sliding valve device 30” to be described later.

  As shown in FIG. 4, the water supply channel 21 also has a primary end 21 a disposed below the main body 11 and a secondary end 21 b disposed above the main body 11. Yes. The “primary side end portion 21a of the water supply channel 21” and the water supply source C (terminal portion of the hot water supply pipe) are connected via a water supply relay pipe 26C. The “secondary end 21 b of the water supply channel 21” is connected to a water supply port 30 b of a “first sliding valve device 30” described later.

  The first sliding valve device 30 constitutes a specific example of a “mixing valve” and is disposed on the upper end side of the main body 11 as shown in FIG. 3. Further, the “exhaust port 30 c” of the first sliding valve device 30 is connected to the primary side end portion 25 a of the exhaust passage 25 as shown in FIG. 4. As shown in FIG. 3, the first sliding valve device 30 includes a fixed valve body 31 and a movable valve body 32 that slides on the fixed valve body 31.

  The first sliding valve device 30 is operated using an operation lever (see FIG. 1) 35 mounted above the main body 11. And this 1st sliding valve apparatus 30 mixes the hot water supplied through the hot water supply path 20, and the water supplied through the water supply path 21 with a predetermined | prescribed mixing ratio, and is the discharge flow path through the discharge port 30c. 25 can be discharged. Further, the first sliding valve device 30 discharges the hot water supplied from the hot water supply passage 20 to the discharge flow passage 25 as it is, or the water supplied from the water supply passage 21 to the discharge flow passage 25 as it is. It can also be discharged.

  As shown in FIGS. 3 and 4, the discharge flow path 25 includes a flow path section 25 a that descends from the first sliding valve device 30 (as an end on the primary side) and an upper space section 12 u (the first space section). 1 flow path portion 25b). The “secondary side end portion 25d” of the discharge flow path 25 is configured by “an upper end portion (opening portion) of the upper space portion 12u” (see FIG. 3).

  The branch channel 23 constitutes a specific example of the “water purification channel J”. As shown in FIG. 5, the primary side end 23 a is connected to the intermediate portion of the water supply channel 21, and 2 The end 23b on the next side is constituted by “the upper end (opening) of the lower space 12d” (see FIG. 3). Further, as shown in FIG. 6, the internal space 13 a of the attachment portion 13 constitutes a part of the branch flow path 23 (part close to the primary side end portion 23 a). In the following description, a part of the branch flow path 23 that is located on the primary side of the internal space 13a is referred to as a valve front flow path part 23c, and a part of the branch flow path 23 that is located on the secondary side of the internal space 13a is It may be referred to as a post-valve flow path portion 23d.

  As shown in FIG. 6, the second sliding valve device 50 is attached to the attachment portion 13 (internal space 13a). The second sliding valve device 50 includes a housing 51, a fixed valve body 52 disposed in the housing 51, and a movable valve body 53 that can slide with respect to the fixed valve body 52.

  The housing 51 includes an introduction port 51a and an outlet port 51b. The introduction port 51a opens toward the valve front passage portion 23c (connected to the valve front passage portion 23c), and the outlet port 51b is provided after the valve. It opens toward the flow path portion 23d (connected to the post-valve flow path portion 23d).

  The second sliding valve device 50 is operated using a handle 50 h disposed on the side of the attachment portion 13. As a result, the water supply path 21 and the post-valve flow path portion 23d are shut off, and the flow of water from the water supply path 21 into the post-valve flow path portion 23d is stopped, or the water supply path 21 and the post-valve flow path portion 23d To allow water to flow from the water supply passage 21 to the post-valve flow passage portion 23d. Further, the amount of water flowing from the water supply passage 21 to the post-valve flow passage portion 23d is adjusted by adjusting the degree of communication between the pre-valve flow passage portion 23c and the post-valve flow passage portion 23d.

  The water discharge head 60 constitutes a specific example of the water discharge member, and includes a gripping portion 61 and a head portion 62 as shown in FIG. In addition, the water discharge head 60 is disposed in a state where the rear end portion is supported by the support portion 12 and protrudes from the faucet body 10 (a state where the water discharge head protrudes obliquely upward). In the water discharge head 60 and its constituent members, the “close side (that is, the primary side along the water flow direction)” to the faucet body 10 is referred to as “rear” and is separated from the faucet body 10. “Side side (that is, secondary side along the water flow direction)” may be referred to as “front”. For example, the “end on the side close to the faucet body 10” may be referred to as “rear end”, and the “end on the side away from the faucet body 10” may be referred to as “front end”.

  As shown in FIGS. 7 and 8, the grip portion 61 is configured by a substantially cylindrical body whose inner diameter and outer diameter are substantially constant in the axial direction. Further, the inner diameter of the rear end portion (lower end portion) can be fitted with the spacer 14 described above. Further, a water purification cartridge 70 is disposed in the grip portion 61.

  The water purification cartridge 70 has a substantially cylindrical outer shape, and is inserted into the gripping part 61 in a state where the axis is aligned with the axis of the gripping part 61. The water purification cartridge 70 is inserted into the outer case 71.

  As shown in FIG. 9, the outer case 71 is configured in a “bottomed substantially cylindrical shape” having a bottom 71 a at a rear end (lower end). Further, a through hole 71b that penetrates the bottom portion 71a is provided at the center of the bottom portion 71a of the outer case 71 (a position through which the axis of the outer case 71 passes). Further, on the surface of the bottom portion 71a (a surface located on the front side of the outer case 71), a substantially cylindrical connecting portion 71c protrudes from a portion surrounding the through hole 71b in a circular shape. As shown in FIG. 8, the connecting portion 71c is sized so that the aforementioned connected portion 12e can be inserted. still. The connected portion 12 e constitutes a specific example of the “inlet” of the outer case 71.

  As shown in FIG. 9, the front end portion of the outer case 71 is a large-diameter portion 71d having an inner diameter and an outer diameter that are increased in steps. The large-diameter portion 71d has a size that can be fitted into the grip portion 61 (see FIG. 8). Further, in the outer peripheral portion of the outer case 71, a flange portion 71e is formed at a portion located behind the large diameter portion 71d, and a gap portion formed between the rear end portion of the large diameter portion 71d and the flange portion 71e. A mounting groove that goes around the outer periphery of the outer case 71 is formed. A sealing member (packing) 71g is mounted in the mounting groove.

  As shown in FIG. 9, the water purification cartridge 70 includes a purification material 72j configured in a substantially cylindrical shape, and an exterior body 72a that covers the front half side of the purification material 72j. Moreover, the exterior body 72a is comprised by the substantially cylindrical shape provided with the cover part 72c in the front-end part. At a substantially central portion of the lid portion 72c, an outlet 72f that communicates the inside and outside of the exterior body 72a is formed. The outlet 72f constitutes a specific example of an “extraction portion” of the water purification cartridge 70. A disc-shaped plate member 72d is attached to the rear end surface of the purification material 72j. The plate member 72d is formed with an intake 72e that communicates in the thickness direction. The intake 72 e constitutes a specific example of the “intake portion” of the water purification cartridge 70. In the present embodiment, the inlet 72e and the outlet 72f are formed in a substantially cylindrical shape protruding in a direction away from the purification material 72j.

  The purifying material 72j is composed of “a hollow fiber membrane covered with the exterior body 72a while constituting the front half (the part on the side close to the water discharge port)” and “the latter half (the part on the side separated from the water discharge port). “Composed fibrous activated carbon”. However, the fibrous activated carbon is in a state where its outer peripheral portion is covered with a filter 72g using a nonwoven fabric.

  In the present embodiment, as shown in FIG. 8, the water purification cartridge 70 is fitted to the outer case 71. Further, the intake 72e of the water purification cartridge 70 has a protruding end abutted against the bottom 71a of the outer case 71, and the intake 72e and the connected portion 12e are aligned concentrically and communicate with each other.

  As shown in FIG. 7, the head 62 is formed in a bent shape, and has a valve device 65 disposed therein, and an operation button 62 a for operating the valve device 65 is exposed to the outer peripheral portion. The front end of the head 62 is constituted by a water discharge face 62b. Further, the water discharge face 62b includes a large through hole 62c located at the center and a large number of through holes (not shown) located around the water through face 62b. These through holes (62c and the like) are provided in a state of penetrating the water discharge face 62b in the thickness direction, and constitute a specific example of a “water discharge port”.

  The operation button 62a is for selecting a water discharge mode (raw water discharge mode) performed by the water discharge port (many through holes 62c). That is, “shower water discharge” and “foam water discharge (water discharge including bubbles)” can be alternatively executed in accordance with the operation mode of the operation button 62a.

  Further, a substantially cylindrical connecting portion 62g is provided at the rear end portion of the head portion 62. The connecting portion 62g is sized to fit on the front end side of the outer case 71. A circumferential mounting groove is provided on the outer peripheral portion, and a sealing member (packing) 62i is mounted in the mounting groove. The shared path 62j is configured by the internal space of the head 62 (the space from the inlet of the connecting portion 62g to the water discharge face 62b). The common path 62j passes through raw water immediately before reaching the water discharge face 62b and purified water immediately before reaching the water discharge face 62b.

  As shown in FIG. 7, the water discharge head 60 is supported by the faucet body 10 by externally fitting the “support portion 12 to which the spacer 14 is screwed” by the “rear end side of the gripping portion 61”. Further, the water purification cartridge 70 is disposed in the grip portion 61 in a state of being fitted to the outer case 71. At that time, the outer case 71 fits the connected portion 12e of the faucet body 10 to the connecting portion 71c, and the large-diameter portion 71d is “a portion located on the upper end side in the gripping portion 61”. Is disposed in the gripping portion 61 in a state of being in contact with the The watertightness between the connecting portion 71c and the connected portion 12e is maintained by a seal member (packing or the like) 12p attached to the connected portion 12e, and the watertightness between the outer case 71 and the gripping portion 61 is determined by the outer case. It is held by a seal member (packing) 71g attached to 71. Further, the positioning of the gripping portion 61 of the outer case 71 along the axial direction is performed by bringing the rear end surface of the connection portion 71c into contact with the lid portion 12f. Furthermore, the head portion 62 is integrated with the grip portion 61 by fitting the connecting portion 62 g to the front end side of the outer case 71.

  When the water discharge head 60 is supported by the faucet body 10, as shown in FIG. 8, an annular space portion (hereinafter referred to as “intermediate water passage portion”) is formed between the outer wall portion of the outer case 71 and the grip portion 61. .) 67 is formed. The intermediate water passage portion 67 is a portion constituting the “intermediate portion of the water passage G for raw water”, and the “primary side end portion (rear end portion)” is the above-described upper space portion (first portion). Of water passage) 12u. Further, the “secondary side end (front end)” of the intermediate water passage 67 is connected to the common passage 62j via the relay water passage 58 (see FIG. 4).

  In the present embodiment, as shown in FIG. 4, “water channel G for raw water” is “discharge channel 25 (flow channel 25a and channel 25b) in faucet body 10” and “water discharge”. It is configured by connecting a flow path section (an intermediate water flow path section 67, a relay water flow path section 58, and a common flow path 62j) in the head 60 ". When the first sliding valve device 30 is opened using the operation lever 35, “raw water A that has passed through the water passage G for raw water” is discharged from the water discharge face 62b.

  Further, as shown in FIG. 5, the “purifying water passage J” is constituted by a branch flow passage 23 in the faucet body 10, and the secondary end of the water purifying water passage J (connected) The portion 12e) is connected to the inlet (connecting portion 71c) of the outer case 71 in a watertight manner. For this reason, in the hot water and water mixing tap S, the “water passage G for raw water” and the “water passage J for water purification” are in an isolated state (separated in a substantially watertight manner). Yes. When the second sliding valve device 50 is opened using the handle 50h, the “water that has passed through the water purification passage J” passes through the water purification cartridge 70 to become the purified water B. Then, the water is discharged from the water discharge face 62b through the water discharge path 62t (described later).

  In the hot and cold water mixing faucet S of the present embodiment, the water purification cartridge 70 is disposed in the water discharge head 60, so that the appearance (appearance) is good and the installation space can be saved. Moreover, since the water passage G for raw water and the water passage J for water purification are isolated and each is a dedicated water passage, the “hot water passing through the water passage G for raw water” It does not flow into the intake 72e. In other words, only “water” that has flowed into the “water purification passage J” through the water supply passage 21 flows into the intake 72 e of the water purification cartridge 70. Therefore, according to the hot and cold water mixing faucet S of the present embodiment, it is possible to suppress the occurrence of “the trouble that harmful substances (trihalomethane, etc.) adhering to the purification material 72j constituting the water purification cartridge flow out from the water outlet”. Can do.

  Further, according to the present embodiment, the “outer case 71” is used to constitute “a partition wall for isolating the raw water passage G and the purification material 72j. Simplification can be achieved.

  The scope of each invention is not limited to the specific modes shown in the above-described embodiments, and various modifications can be exemplified within the scope of each invention.

  That is, as in Modification 1 shown in FIG. 10A, a check valve 78 may be arranged on the secondary side of “the outlet 72 e of the water purification cartridge 70” according to the invention of claim 2. That is, similarly to the embodiment, in the water discharge head 60, the “water discharge path 62 t that connects the outlet 72 e and the water discharge face 62 b (water discharge port)” and the “water channel G for raw water” are the water discharge head 60. It merges in the inner merge part H. In addition, the flow path part from the confluence | merging part H to the water discharge face 62b (water discharge port) becomes the above-mentioned common path 62j.

  In the first modification, a check valve 78 is arranged in a portion (a portion located between the outlet 72e and the merging portion H) located on the primary side of the merging portion H in the water discharge passage 62t. Has been established. And according to this modification 1, "the backflow to the water purification cartridge 70 of raw | natural water" can be prevented, aiming at simplification of the structure of the water discharging head 60. FIG.

  Further, as in Modification 2 shown in FIG. 10B, according to the invention of claim 3, in the water discharge head 60, “a water discharge path 62 t that connects the outlet 72 e and the water discharge face 62 b (water discharge port)”; The “raw water channel G” may be separated. Also in the second modification, it is possible to reliably prevent the raw water in the raw water passage G from flowing backward toward the water purification cartridge 70.

  The present invention can be used, for example, in the field of manufacturing, selling, installing, processing and the like of faucets.

It is a schematic side view of the hot and cold water mixing faucet of an example. It is a front view of the hot and cold water mixing faucet of an example. It is a principal part longitudinal cross-sectional view of the hot / cold water faucet of an Example. It is explanatory drawing for demonstrating the flow-path structure of the hot and cold water mixing faucet of an Example. It is explanatory drawing for demonstrating the flow-path structure of the hot and cold water mixing faucet of an Example. It is a longitudinal cross-sectional view for demonstrating a 2nd sliding valve apparatus. It is a principal part expansion longitudinal cross-sectional view of the hot-water and water mixing tap of an Example. It is a principal part expansion longitudinal cross-sectional view of the hot-water and water mixing tap of an Example. It is a principal part disassembled longitudinal cross-sectional view of the hot and cold water mixing faucet of the water discharge head of an Example. (A) is explanatory drawing for demonstrating the modification 1, (b) is explanatory drawing for demonstrating the modification 2. FIG. It is a front view for demonstrating the hot / cold water mixing tap which concerns on a prior art example. It is explanatory drawing for demonstrating the hot-and-water mixing tap (invention example) which this inventor invented before this application. It is explanatory drawing for demonstrating the flow-path structure of the hot / cold water mixing tap (improvement example) which this inventor invented before this application.

Explanation of symbols

S: Mixing tap for hot water and water,
C: Water supply source
H: Hot water source
G: Water passage for raw water (discharge passage 25, intermediate water passage portion 67, relay water passage portion 58 and common passage 62j),
J: Water passage for water purification (branch channel 23)
H;
10; faucet body,
30; first sliding valve device (mixing valve),
12; support part,
12d; lower space (second water passage),
12u; upper space (first water passage),
20; Hot water supply path,
21; water supply channel,
60; water discharge head (water discharge member),
62c; through-hole (water outlet),
71; outer case,
71c; connection part (inlet),
72j; purification material,
72e; intake,
72f; outlet,
78; Check valve.

Claims (4)

A faucet body comprising a hot water supply channel communicated with a hot water supply source and a water supply channel communicated with the water supply source;
A mixing valve disposed in the faucet body, mixing hot water supplied through the hot water supply channel and water supplied through the water supply channel at a predetermined mixing ratio, and capable of discharging through a discharge port;
A water discharge member disposed in a state protruding from the faucet body, and having a water discharge port opened at a predetermined site,
In the water discharge member, disposed at a location located on the primary side of the opening portion of the water discharge port, an intake portion of water supplied from the water supply source, and an extract portion of the purified water A water purification cartridge provided;
A hot and cold water faucet comprising:
Hot water characterized in that a water passage for raw water for connecting the discharge port and the water outlet and a water passage for water purification for connecting the water supply passage and the intake section are provided separately. Mixing tap. The water discharge channel connecting the take-out part and the water discharge port and the water flow channel for the raw water merge at a predetermined junction,
The hot / cold water faucet according to claim 1, wherein a check valve is disposed between the extraction portion and the merging portion.   2. The hot and cold water mixing faucet according to claim 1, wherein a water discharge channel connecting the extraction portion and the water discharge port is provided separately from the water flow channel for raw water. The faucet body includes a support portion that protrudes in an upwardly inclined manner and supports the proximal end portion of the water discharge member in an insertion manner,
The internal space of the support portion uses a partition wall to form a first water passage portion constituting a part of the raw water passage and a second water passage portion constituting a part of the water purification passage. Divided into
The water purification cartridge is inserted into the water discharge member in a state of being inserted into an outer case having an inflow port,
The inflow port and the second water passage portion are connected in a watertight manner, and a space portion formed between the outer wall portion of the outer case and the inner wall portion of the water discharge member is formed in the first water passage portion. The hot and cold water mixing faucet according to any one of claims 1 to 3, characterized in that it communicates in a watertight manner.

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