JP6120246B2 - Faucet device - Google Patents

Description

  The present invention relates to a faucet device that performs water discharge.

  Conventionally, as a faucet device for discharging water, by operating a single operation handle, water spouting water, hot water discharging water, hot water mixing water discharging water, or purified water discharging water from a water supply source such as a water pipe There is known a so-called single-lever type mixed faucet device that can perform a water discharge operation by switching to any one of the water discharge modes (for example, see Patent Document 1).

  Such a mixed water faucet device includes a valve cartridge that is built in the main body of the mixed water faucet device and to which a water supply pipe and a hot water supply pipe are connected, and a water discharge section that performs water discharge. Inside the water discharge part, a raw water side flow path is formed through which the raw water that has passed through the valve cartridge flows directly. In addition, a water purification side pipe is formed by extending a water purification side pipe from the valve cartridge inside the water discharge part independently of the raw water side flow path, and the water purification side flow path is formed from the valve cartridge to the water purification side. A water purification unit is provided for purifying the raw water flowing into the flow path.

JP 2011-196017 A

  In the conventional mixing faucet device described above, the raw water is discharged from the water discharging part or the purified water is discharged from the water discharging part by the valve cartridge upstream of the water purifying part, that is, the raw water is supplied to either the raw water side flow path or the purified water side flow path. It was possible to switch whether to pass water. Therefore, for example, when the purified water flow path is merged with the raw water flow path on the downstream side, the raw water may flow backward from the raw water flow path to the purified water side. In that case, the raw water with high temperature when performing hot water discharge or hot water mixed water discharge flows into the water purification unit, so that the water purification unit is easily deteriorated by heat, and the water purification unit is damaged or the purification performance is lowered. There was a problem. Furthermore, when the durability against the water pressure from the side opposite to the water flow direction of the water purification unit is not higher than the durability against the water pressure from the water flow direction, the raw water flows backward from the raw water side flow path to the water purification unit side. As a result, there has been a problem that the water purification section is easily damaged and the purification performance is lowered. In addition, when the raw water side flow path and the purified water side flow path are not merged, a water discharge part must be prepared for each of the raw water and the water purification, increasing the number of parts and cost, and reducing the water discharge part. There was a problem that it was difficult.

  The present invention has been made in order to solve the above-described problem, and switches the raw water discharge and the purified water discharge in the water discharge section upstream of the water purification section, and the raw water side flow path and the water purification side flow path are connected to the water purification section. An object of the present invention is to provide a water faucet device that can suppress the backflow of raw water to the water purification unit side even if they are combined downstream.

The present invention is a faucet device that switches between raw water supplied from a water supply source and purified water obtained by purifying raw water supplied from a water supply source by a water purification unit, and discharges water from the water discharge unit, which is supplied from the water supply source A raw water side flow path for supplying raw water toward the water discharge section, a water purification side flow path for supplying purified water toward the water discharge section, wherein the water purification section for purifying the raw water supplied from a water supply source is interposed, and A flow path switching unit that is provided on the upstream side of the water purification unit, and that allows raw water supplied from a water supply source to pass through the raw water side flow channel and the water purification side flow channel. The flow path switching unit further adjusts the raw water and purified water, stop water and flow rate, and the water discharge part supplies the raw water supplied from the plurality of water outlets and the raw water side flow path, What are the multiple water discharge channels that are supplied to each of the multiple water discharge ports, and what are the multiple water discharge channels? A water discharge form switching unit that switches the form of water discharge in the water discharge part by selecting whether to allow the raw water supplied from the raw water side flow path to flow, and the water purification side flow path, The faucet device is characterized in that it is always joined to any one of the plurality of water discharge channels on the downstream side of the water discharge form switching unit.

  In the present invention configured as described above, since the purified water flow path joins the discharged water flow path downstream of the discharged water form switching unit, the raw water is not passed through the discharged water flow path where the purified water flow path joins. In this case, the raw water does not flow from the water discharge channel to the purified water channel. Moreover, even when raw water is passed through the water discharge flow path where the water purification side flow path joins, the water can be merged at a position closer to the water discharge port from which the raw water is discharged. Therefore, compared with the case where it joins upstream from the water discharge form switching part, since it merges in the position near the water discharge port where the pressure loss of raw water becomes small, raw water is hard to flow into a purified water side channel. Therefore, it is possible to suppress the raw water from flowing into the purified water side channel.

In the present invention, the plurality of water discharge ports further include a shower water discharge port that performs shower water discharge, and a straight water discharge port that performs straight water discharge, and the plurality of water discharge channels communicate with the shower water discharge port. A water discharge channel for water discharge, and a water discharge channel for straight water discharge communicating with the straight water discharge port, and the water purification side channel is a water discharge channel for straight water discharge
It is good also as a structure which always merges.

  In the present invention configured as described above, the purified water is always discharged straight. Therefore, compared with the case where shower water is discharged, it is difficult for the user to feel a shortage of water volume with respect to the purified water whose water pressure has been lowered by passing through the water purification unit.

  According to the faucet device of the present invention, it is possible to suppress the back flow of raw water to the water purification unit side of the water purification side flow path.

1 is an external perspective view showing a water faucet device according to an embodiment of the present invention. The side view showing the faucet device by one embodiment of the present invention. Sectional drawing which shows the flow-path formation member of the faucet device by one Embodiment of this invention. The top view which shows schematically the flow-path formation member of the water faucet device by one Embodiment of this invention, the fixed valve body above it, and the movable valve body above it. The plane sectional view showing the discharging head part of the faucet device by one embodiment of the present invention. (A) AA sectional drawing of FIG. 5 which shows the water discharging part of the faucet device by one Embodiment of this invention. (B) BB sectional drawing of FIG. 5 which shows the water discharging part of the faucet device by one Embodiment of this invention. (A) The figure which demonstrated schematically the water discharging operation | movement of the raw water straight water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention. (B) The figure explaining roughly the water discharging operation | movement of the raw | natural water shower water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention. (C) The figure which demonstrated schematically the water discharging operation | movement of the purified water straight water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention.

Hereinafter, a faucet device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view showing a faucet device according to an embodiment of the present invention, and FIG. 2 is a side view showing the faucet device according to an embodiment of the present invention.

  As shown in FIGS. 1 and 2, the faucet device 1 according to one embodiment of the present invention supplies hot water adjusted in flow rate and temperature by operating one operation handle 6 at the water discharge portion 8 a of the water discharge head portion 8. A so-called single lever type mixed faucet body 10 having a water purifying function capable of discharging water and allowing water to be discharged at the water discharging portion 8a by operating the operation handle 6 is provided. The faucet device 1 includes a hot water supply pipe 2 that guides heated hot water (raw water) supplied from a water supply source (not shown) to the mixed water faucet device body 10 and a mixed water faucet device body 10 from the water supply source (not shown). And a water supply pipe 4 for supplying water (raw water).

  The mixing faucet body 10 is disposed on a counter 12 such as a kitchen sink or a wash basin, and when the operation handle 6 is rotated upward (in the direction of the arrow “open” shown in FIG. 1). Can be switched from water stop to water discharge in the water discharge portion 8a of the water discharge head portion 8. The flow rate of the hot water discharged from the water discharge part 8a of the water discharge head part 8 can be set larger as the operation handle 6 is set to a position rotated further upward.

  On the other hand, when the operation handle 6 is rotated to the lowest position (the direction of the arrow “closed” shown in FIG. 1), the hot water discharged from the water discharge portion 8 a of the water discharge head portion 8 is stopped. It can be set to the state.

  Further, when the operation handle 6 is rotated from the front side in the horizontal direction (rightward in the horizontal direction in FIG. 1) of the arrow “C” in FIG. 1 about the vertical center axis A1 of the mixing faucet body 10. Can be set to a mode in which water is discharged from raw water from the water discharge portion 8a of the water discharge head portion 8 (hereinafter referred to as “water discharge mode”). Further, when the operation handle 6 is further rotated in the horizontal direction (right side in the horizontal direction in FIG. 1) of the arrow “C” about the central axis A1 from the state of the water discharge mode, It can be set to a mode in which purified water is discharged from the water discharge portion 8a of the head portion 8 (hereinafter referred to as “purified water discharge mode”).

  On the other hand, when the operation handle 6 is turned from the front side in the horizontal direction (left side in FIG. 1) of the arrow “H” in FIG. 1 around the central axis A1 in the vertical direction of the mixing faucet body 10. Can be set to a mode in which hot water is discharged from raw water from the water discharge portion 8a of the water discharge head portion 8 (hereinafter referred to as “hot water discharge mode”). Further, when the operation handle 6 is rotated to a position between the position in the water discharge mode and the position in the hot water discharge mode, a mode in which hot water and water from the raw water are mixed and discharged (hereinafter referred to as “hot water”). The mixed water discharge mode ") can be set.

  Next, as shown in FIG. 2, the water discharge head portion 8 is detachably attached to a water discharge head attachment portion 14 that protrudes forward and obliquely upward from the front surface of the mixing faucet body 10. The user grasps the water discharge head portion 8 and removes it from the water discharge head mounting portion 14 of the mixing faucet main body 10 so that the user can use it while being pulled forward (in the direction of arrow A in FIG. 2). It has become.

  In addition, at the front end portion of the water discharge head unit 8, a water discharge mode (hereinafter “shower water discharge mode”) for performing shower-like water discharge in the water discharge unit 8 a or a water discharge mode (hereinafter “straight water discharge mode”) for performing straight water discharge. A changeover switch 8b for switching is provided.

  Further, as shown in FIGS. 1 and 2, a hose member 16 is connected to the rear end portion (upstream side) of the water discharge head portion 8, and the upstream side of the hose member 16 is built in the mixing faucet body 10. The steel pipe member 18 connected to the flow path forming member 30 and the connecting member 20 are connected. Further, the mixing faucet device main body 10 has a valve cartridge 28 (flow channel switching unit) that selects and switches as a flow channel through which a predetermined flow channel passes through a plurality of flow channels in the mixed faucet device main body 10. Is built-in.

  Next, the valve cartridge and the flow path forming member will be described with reference to FIGS. FIG. 3 is a cross-sectional view of a flow path forming member of a faucet device according to an embodiment of the present invention, and FIG. 4 is a flow path forming member of a faucet device according to an embodiment of the present invention, a fixed valve body above it, It is a top view which shows an upper movable valve body roughly. In FIG. 3, each of the hot water flow and the water flow on the primary side, and the non-purified raw water flow F1 and the purified raw water flow F2 on the secondary side are indicated by arrows.

  As shown in FIG. 3, the flow path forming member 30 built in the mixing faucet body 10 includes a primary hot water flow path 30a, a primary side water flow path 30b, a secondary raw water side flow path 30c extending in the vertical direction, and Four channels of secondary side purified water side channel 30d are formed, respectively.

  As shown in FIG. 4, the valve cartridge 28 provided on the upper side of the flow path forming member 30 in the mixing faucet device main body 10 is provided on the fixed valve body 22 and slidably provided on the fixed valve body 22. It has a movable valve body 24 and an operation unit (not shown) that is connected to the movable valve body 24 and operates the movable valve body 24.

  The fixed valve body 22 is formed with four flow paths, namely, a primary hot water flow path 22a, a primary water flow path 22b, a secondary raw water flow path 22c, and a secondary clean water flow path 22d that extend in the vertical direction. Yes. On the other hand, the movable valve body 24 has a primary flow path 24a into which water discharged from the fixed valve body 22 side (upstream side of the movable valve body 24) flows, and water discharged from the primary side flow path 24a to the fixed valve body 22. And a secondary flow path 24b that discharges to the side (downstream of the movable valve body 24).

  As shown in FIGS. 3 and 4, the primary hot water flow path 30 a of the flow path forming member 30 has an upper end portion (downstream end portion) of the primary hot water flow path 22 a of the fixed valve body 22 of the valve cartridge 28. The lower end side (upstream side) is connected in communication. On the other hand, the upper end portion (downstream end portion) of the hot water supply pipe 2 is inserted into and connected to the lower end portion (upstream end portion) of the primary-side hot water flow passage 30a of the flow path forming member 30. Similarly, the primary side water flow path 30b of the flow path forming member 30 is connected to the lower end side (upstream side) of the primary side water flow path 22b of the fixed valve body 22 of the valve cartridge 28 at its upper end (downstream end). ing. On the other hand, the upper end portion (downstream end portion) of the water supply pipe 4 is inserted and connected to the lower end portion (upstream end portion) of the primary side water flow passage 30b of the flow passage forming member 30.

  Further, the upper end portions (upstream end portions) of the secondary side raw water side flow channel 30 c and the secondary side purified water side flow channel 30 d of the flow path forming member 30 are the secondary side raw water side flow channels 22 c of the fixed valve body 22. And the lower end side (downstream side) of each of the secondary side purified water flow path 22d is connected in communication.

  Further, as shown in FIG. 3, the steel pipe member 18 is connected to the secondary raw water side flow path 30 c of the flow path forming member 30 from the lower side. The steel pipe member 18 is a double pipe member including an elongated substantially circular tubular outer steel pipe member 36 and an inner steel pipe member 38 disposed concentrically inside the outer steel pipe member 36. Further, the upper end portion (upstream end portion) of the inner steel pipe member 38 is an inner steel pipe member connection portion 40 that is a downstream end portion of the secondary-side raw water-side flow passage 30c located a predetermined distance above the bottom surface of the flow passage forming member 30. Are connected in a liquid-tight manner through a seal member 42. Thereby, the inner peripheral side of the inner steel pipe member 38 forms a raw water side flow path 38a through which only non-purified raw water flowing from the secondary side raw water side flow path 30c flows.

  On the other hand, an outer steel pipe member connecting portion 44 is provided at a position immediately below the bottom surface of the flow path forming member 30 and the inner steel pipe member connecting portion 40 (downstream side of the inner steel pipe member connecting portion 40). The upper end (upstream end) is liquid-tightly connected via the seal member 46. Furthermore, on the upstream side of the outer steel pipe member connection portion 44 of the flow path forming member 30 and the downstream side of the inner steel pipe member connection portion 40, the lower end portion of the secondary water purification side flow passage 30d and the outer steel pipe member connection portion 44 are provided. A connection channel 48 extending in a substantially horizontal direction is formed so as to connect the two.

  In addition, the secondary raw water side flow path 30c and the secondary side purified water side flow path 30d of the flow path forming member 30 located on the upstream side of the outer steel pipe member connection portion 44 are such that the central axes of the cross sections of the flow paths are mutually Since it is eccentric, the raw water for water purification in the secondary-side water purification-side channel 30d is formed between the outer peripheral surface of the inner steel pipe member 38 and the inner peripheral surface of the outer steel pipe member 36 via the connection channel 48. It flows through the purified water side flow path 36a (see FIG. 4). That is, the raw water side flow path 38a on the inner peripheral side of the inner steel pipe member 38 and the purified water flow path 36a formed between the outer peripheral surface of the inner steel pipe member 38 and the inner peripheral surface of the outer steel pipe member 36 are mutually connected. Since the independent flow path is formed, the raw water for non-purifying water and the raw water for water purification flowing through each flow without being mixed with each other.

  With such a configuration, when the operation portion (not shown) of the valve cartridge 28 is operated by operating the operation handle 6, the movable valve body 24 slides or rotates along the upper surface of the fixed valve body 22, The communication state between the flow path of the flow path forming member 30 and the flow path of the movable valve body 24 and the flow path of the fixed valve body 22 can be switched. Thereby, it can select and switch as a flow path which lets a predetermined flow path pass through among a plurality of flow paths in mixing faucet device main part 10, and the water discharge mode in water discharge part 8a of water discharge head part 8 is mentioned above. It is possible to switch to any one of the water discharge mode, the hot water mixed water discharge mode, the hot water discharge mode, or the purified water discharge mode.

Next, with reference to FIG. 5, FIG. 6 (a) and (b), the detail of the internal structure of a water discharging head part is demonstrated.
FIG. 5 is a plan sectional view showing a water discharge head portion of a faucet device according to an embodiment of the present invention, and FIG. 6A shows a water discharge portion of the water faucet device according to an embodiment of the present invention. Sectional drawing and FIG.6 (b) are BB sectional drawings of FIG. 5 which show the water discharging part of the faucet device by one Embodiment of this invention. In addition, in FIG. 5, the flow F1 of the raw water for non-purified water and the flow F2 of the raw water for purified water and the purified water are respectively indicated by arrows. Moreover, in FIG. 5, FIG. 6 (a) and (b), the water faucet device is set to the straight water discharge mode.

  The steel pipe member 18 composed of the inner steel pipe member 38 and the outer steel pipe member 36 is connected to the hose member 16 via the connection member 20. As shown in FIG. 5, the hose member 16 includes an inner hose 72, an outer hose 74, and a flexible tube 76 that are arranged substantially concentrically from the inside toward the outside.

  On the inner peripheral side of the inner hose 72, a raw water side flow path 72a that communicates with the raw water side flow path 38a on the inner peripheral side of the inner steel pipe member 38 is formed. Further, between the outer peripheral surface of the inner hose 72 and the inner peripheral surface of the outer hose 74, a purified water side flow path 36 a formed between the outer peripheral surface of the inner steel pipe member 38 and the inner peripheral surface of the outer steel pipe member 36, A water purification-side flow path 74a that communicates is formed.

  As shown in FIG. 5, the water discharge head portion 8 includes a hose connection portion 80 to which the hose member 16 is connected. The water discharge head unit 8 includes an outer casing member 96, an inner casing member 98 provided inside the outer casing member 96, and a substantially cylindrical water purification cartridge 100 ( Water purification section).

  Between the outer peripheral surface of the inner casing member 98 and the inner peripheral surface of the outer casing member 96, there is a raw water side channel 102 communicating with the downstream side of the raw water side channel 72 a of the inner hose 72 via the hose connection portion 80. Is formed. On the other hand, between the inner peripheral surface of the inner casing member 98 and the outer peripheral surface of the water purification cartridge 100, the purified water side between the outer peripheral surface of the inner hose 72 and the inner peripheral surface of the outer hose 74 via the hose connection portion 80. A purified water flow path 104 communicating with the downstream side of the flow path 74 a is formed independently from the raw water flow path 102.

  The raw water for water purification in the purified water side flow path 104 is made purified by passing through the inside of the purified water cartridge 100, and then flows to the water discharger 8a side. In addition, the raw water for non-purified water in the raw water-side channel 102 does not pass through the water purification cartridge 100 and flows to the water discharger 8a side without being purified (raw water, hot water, or mixed hot water). ing.

  Next, as shown in FIGS. 5, 6 (a) and 6 (b), a substantially disc-shaped water discharge flow path forming member 105 is built in the water discharge portion 8 a of the water discharge head portion 8. The water discharge flow path forming member 105 has a straight water discharge protrusion 105a and a shower water discharge protrusion 105b erected upward.

  The straight water discharge protrusion 105a has a substantially cylindrical shape opened up and down, communicates with the raw water side flow path 102 at the upper opening, and a straight water discharge flow path 106 is formed on the inner peripheral side thereof. . In addition, an opening is formed on the side surface of the straight water discharge protrusion 105a on the water purification-side flow path 104 side, and the downstream end of the water purification-side flow path 104 joins the opening on this side surface. The lower opening communicates with a straight water discharge port 112 that performs straight water discharge.

  The shower water discharge projection 105b has a substantially cylindrical shape opened up and down, communicates with the raw water side flow channel 102 at the upper opening, and a shower water discharge flow channel 108 is formed on the inner peripheral side thereof. . A plurality of lower openings are formed around the straight water outlet 112 and communicate with a shower water outlet 114 that performs shower-like water discharge.

  Moreover, in the inside of the water discharging part 8a, the water discharging form which closes either the straight water discharging flow path 106 or the shower water discharging flow path 108, and opens the other in conjunction with the operation position of the changeover switch 8b. A switching valve 8c (a water discharge mode switching unit) is provided.

  When the straight water discharge mode is set by the changeover switch 8b, the straight water discharge water discharge channel 106 is a non-purified raw water (water, hot water, or mixed hot water) that has flowed through the raw water side flow channel 102 in the water discharge head unit 8. ), Or the purified water that has passed through the purified water cartridge 100 of the purified water flow path 104 in the water discharge head section 8 flows into the flow path for discharging water straight from the straight water discharge port 112 on the downstream side. At this time, the water discharge channel 108 for shower water discharge is closed by the water discharge form switching valve 8c so that the water discharge does not flow in.

  On the other hand, when the shower water discharge mode is set by the changeover switch 8b, the shower water discharge water flow channel 108 is the non-purified raw water (water, hot water, or water) that has flowed through the raw water side flow channel 102 in the water discharge head unit 8. (Mixed hot water) flows, and it is a flow path that discharges water in a shower form from the shower water outlet 114 on the downstream side. At this time, the water discharge flow path 106 for straight water discharge is closed by the water discharge form switching valve 8c so that water discharge does not flow in.

  In addition, the downstream side of the water purification cartridge 100 of the water purification-side flow path 104 through which the purified water flows is always in communication with the straight water discharge flow path 106 of the water discharge section 8a regardless of the operation position of the changeover switch 8b. It has a structure that does not always communicate with the water discharge channel 108. Thereby, even if the changeover switch 8b of the water discharge head unit 8 is set to the shower water discharge mode with the operation handle 6 set to the water discharge mode, the shower-like water discharge is not performed and only the straight water discharge is performed. To be done.

Next, with reference to FIGS. 1-7, operation | movement of the water tap apparatus 1 by one Embodiment of this invention mentioned above is demonstrated.
FIG. 7A is a diagram schematically illustrating the water discharging operation in the raw water straight water discharging mode in the water discharging head portion of the water faucet device according to the embodiment of the present invention, and FIG. 7B is the water faucet device according to the embodiment of the present invention. The figure explaining roughly the water discharging operation | movement of the raw water shower water discharging mode in the water discharging head part of this, (c) The water discharging operation | movement of the clean water straight water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention is demonstrated roughly. FIG.

  First, as shown in FIG. 7 (a), the raw water straight water discharge mode is a state in which the changeover switch 8b of the water discharge head unit 8 is set to the straight water discharge mode, and the operation handle 6 is operated in the water discharge mode. It means the water discharge mode when set to either the operation position of the mode or the operation position of the hot water / mixed water discharge mode.

  When the raw water straight water discharge mode is set, as shown in FIGS. 3 and 4, when the operation handle 6 is set to the water discharge mode, the raw water (water) for non-purified water supplied from the water supply pipe 4 is used. ) Passes from the primary side water flow path 30b of the flow path forming member 30 to the primary side water flow path 22b of the fixed valve body 22, and from the primary side flow path 24a and the secondary side flow path 24b of the movable valve body 24 to the fixed valve body. It passes through the secondary side raw water side flow path 30c of the flow path forming member 30 through the secondary side raw water side flow path 22c. The raw water (water) for non-purifying water is, as shown in FIGS. 3, 5, and 6, the raw water in the inner water hose 72 and the raw water side flow path 38 a in the inner steel pipe member 38 toward the downstream side. The side flow path 72 a flows through the raw water side flow path 102 in the water discharge head unit 8. Then, the water discharge mode switching valve 8c of the changeover switch 8b of the water discharge head unit 8 opens the straight water discharge flow channel 106 and closes the shower water discharge flow channel 108, so that the raw water (water) is discharged into the straight water discharge. The water flows through the water flow path 106 and is finally discharged straight from the straight water discharge port 112 of the water discharge portion 8a.

  Similarly, when the operation handle 6 is set to the hot water discharge mode or the hot water mixed water discharge mode, the upstream side of the secondary side raw water side flow channel 30c of the flow path forming member 30 enters the secondary side raw water side flow channel 30c. As shown in FIGS. 3, 5, and 6, the inflow raw water (hot water or mixed hot water) flows into the raw water side flow path 38 a and the inner hose 72 in the inner steel pipe member 38 toward the downstream side. The raw water side flow path 72a passes through the straight water discharge flow path 106 from the raw water side flow path 102 in the water discharge head section 8, and finally, the raw water (hot water or mixed hot water) flows into the straight water discharge port of the water discharge section 8a. 112 is discharged straight.

  Next, as shown in FIG. 7 (b), the raw water shower water discharge mode is a state where the changeover switch 8b of the water discharge head unit 8 is set to the shower water discharge mode, and the operation handle 6 is operated in the water discharge mode. It means the water discharge mode when set to either the operation position in the water discharge mode or the operation position in the hot water mixed water discharge mode.

  When this raw water shower discharge mode is set, the raw water for non-purified water (water, water) that has flowed into the secondary raw water side flow path 30c from the upstream side of the secondary raw water side flow path 30c of the flow path forming member 30. As shown in FIGS. 3, 5 and 6, the hot water or mixed hot water passes through the raw water side flow path 38 a in the inner steel pipe member 38 and the raw water side flow path 72 a in the inner hose 72 toward the downstream side. About the point which flows through the raw | natural water side flow path 102 in the water discharge head part 8, it is common in the case of the raw water straight water discharge mode mentioned above, but the water discharge form switching valve 8c of the changeover switch 8b of the water discharge head part 8 is the water discharge flow for straight water discharge. The channel 106 is closed and the shower water discharge channel 108 is opened. As a result, the raw water (water, hot water or mixed hot water) flows through the shower water discharge channel 108 and is finally discharged from the shower water outlet 114 of the water discharge part 8a.

  Next, as shown in FIG. 7 (c), the water purification straight water discharge mode is a state in which the operation handle 6 is purified with the changeover switch 8b of the water discharge head unit 8 set to either the straight water discharge mode or the shower water discharge mode. It means the water discharge mode when set to the operation position of the water discharge mode.

  In the case where the water purification straight water discharge mode is set, as shown in FIGS. 3 and 4, when the operation handle 6 is set to the water purification water discharge mode, the raw water for non-clean water supplied from the water supply pipe 4 (to be purified). The previous raw water) passes from the primary side water flow path 30b of the flow path forming member 30 to the primary side water flow path 22b of the fixed valve body 22, and from the primary side flow path 24a and the secondary side flow path 24b of the movable valve body 24. It passes through the secondary side purified water side channel 30 d and the connection channel 48 of the channel forming member 30 through the secondary side purified water side channel 22 d of the fixed valve body 22.

And as shown in FIG.3, FIG5 and FIG.6, this raw water for water purification (raw water before water purification) faces the downstream side, and the purified water side flow path 36a of the outer peripheral side of the inner side steel pipe member 38 is shown in FIG. The water is purified by passing through the water purification cartridge 100 in the inner casing member 98 of the water discharge head portion 8 through the water purification side flow path 74a on the outer peripheral side of the inner hose 72. Further, the purified water flows into the straight water discharge flow passage 106 and is finally discharged straight from the straight water discharge port 112 of the water discharge portion 8a.
In addition, when set to the purified water straight water discharge mode, since the water purification side flow path 104 is always connected with the straight water discharge water flow path 106 of the water discharge part 8a irrespective of the operation position of the changeover switch 8b, water discharge Even if the changeover switch 8b of the head unit 8 is set to the shower water discharge mode, the shower-like water discharge is not performed, and only the straight water discharge is performed.

According to the faucet device 1 according to the embodiment of the present invention described above, the purified water side flow path 104 joins the straight water discharge water discharge path 106 on the downstream side of the water discharge form switching valve 8c. When the raw water is not passed through the channel 106, that is, when the changeover switch 8b of the water discharge head unit 8 is set to the shower water discharge mode and the straight water discharge flow channel 106 is closed by the water discharge form switching valve 8c, the raw water is The straight water discharge flow passage 106 does not flow into the purified water flow passage 104. Further, even when raw water is passed through the straight water discharge channel 106, the straight water discharge channel 104 is more straight than the configuration in which the purified water side channel 104 is joined to the raw water side channel 102 upstream of the water discharge mode switching valve 8c. The purified water-side flow path 104 can be joined to the straight water discharge flow path 106 at a position closer to the water discharge port 112. Therefore, in the straight water discharge flow channel 106, the pressure loss is further reduced on the downstream side, that is, on the straight water discharge port 112 side, compared to the pressure loss at the portion where the purified water flow channel 104 joins. Therefore, it is difficult for raw water to flow into the purified water flow path 104 from the straight water discharge flow path 106.
Since it is possible to suppress the raw water from flowing into the purified water flow path 104, the raw water having a high temperature when performing hot water discharge or hot water mixed water discharge is suppressed from flowing into the water purification cartridge 100. Therefore, the deterioration of the water purification cartridge 100 due to heat, the water pressure acting on the water purification cartridge 100 from the opposite direction to the water flow direction, and the damage to the water purification cartridge 100 and the deterioration of the purification performance associated therewith are less likely to occur, and the stable purification performance. It is possible to obtain a faucet device having the same.

  Moreover, since the purified water side flow path 104 merges with the straight water discharge flow path 106 through which the raw water flows, it is not necessary to prepare the water discharge part 8a for the raw water and the purified water as compared with a configuration in which the water is not merged. Therefore, the number of parts and cost do not increase, and the water discharger 8a can be downsized.

  Furthermore, according to the faucet device 1 according to the above-described embodiment of the present invention, the purified water side channel 104 joins the straight water discharge channel 106, so the purified water is always discharged straight from the straight water outlet 112. Therefore, compared to the configuration in which purified water is discharged through the water discharge mode switching valve 8c, there is no pressure loss due to passing through the water discharge mode switching valve 8c, so that a larger flow rate can be ensured. Therefore, even if the water pressure of the purified water is reduced by passing through the water purification cartridge 100, the user is less likely to feel a lack of water.

  Further, the diameter of the shower water outlet 114 is smaller than the diameter of the straight water outlet 112, and the shower water outlet 114 occupies the water outlet 8a as compared to the area occupied by the straight water outlet 112 in the water outlet 8a. The area is larger. For this reason, it is more likely that adherence of miscellaneous germs caused by contact with the user or the washing of tableware or the like occurs at the shower spout 114 and is difficult to remove when it adheres. In the faucet device 1 according to the above-described embodiment of the present invention, the purified water side flow path 104 joins the straight water discharge flow path 106, so that only raw water is discharged from the shower water discharge port 114. Since only the raw water having the sterilizing power by chlorine flows into the shower spout 114 instead of the purified water from which chlorine has been removed by the water purifying cartridge 100, the propagation of germs in the shower spout 114 is further suppressed, and the hygiene of the shower spout 114 is achieved. Can be held.

DESCRIPTION OF SYMBOLS 1 Water faucet device 2 Hot water supply pipe 4 Water supply pipe 6 Operation handle 8 Water discharge head part 8a Water discharge part 8b Changeover switch 8c Water discharge form switching valve (water discharge form switching part)
DESCRIPTION OF SYMBOLS 10 Mixed faucet apparatus body 12 Counter 14 Water discharge head attachment part 16 Hose member 18 Steel pipe member 20 Connection member 22 Fixed valve body 22a Primary side hot water flow path 22b Primary side water flow path 22c Secondary side raw | natural water side flow path 22d Secondary side purified water Side flow path 24 Movable valve body 24a Primary side flow path 24b Secondary side flow path 28 Valve cartridge (flow path switching unit)
30 flow path forming member 30a primary side hot water flow path 30b primary side water flow path 30c secondary side raw water side flow path 30d secondary side purified water side flow path 36 outer steel pipe member 36a purified water raw water flow path 38 inner steel pipe member 38a raw water side flow Road 40 Inner steel pipe member connection part 42 Seal member 44 Outer steel pipe member connection part 46 Seal member 48 Connection flow path 72 Inner hose 72a Raw water side flow path 74 Outer hose 74a Purified water side flow path 76 Flexible tube 80 Hose connection part of water discharge head part 96 outer casing member 98 inner casing member 100 water purification cartridge (water purification section)
102 Raw water side channel 104 Purified water side channel 105 Water discharge channel forming member 105a Straight water discharge projection 105b Shower water discharge projection 106 Straight water discharge water flow channel 108 Shower water discharge water flow channel 112 Straight water discharge port 114 Shower water discharge port

Claims (2)

A faucet device that switches raw water supplied from a water supply source and purified water obtained by purifying raw water supplied from a water supply source by a water purification unit to discharge water from the water discharge unit,
Raw water side flow path for supplying raw water supplied from a water supply source toward the water discharge part,
The water purification unit that purifies the raw water supplied from the water supply source is interposed, and a purified water flow path that supplies purified water toward the water discharge unit;
A flow path switching unit that is provided on the upstream side of the water purification unit, and that allows raw water supplied from a water supply source to pass through the raw water side flow channel and the water purification side flow channel.
The flow path switching unit further performs raw water and purified water, discharge water and flow rate adjustment,
The water discharge unit includes a plurality of water discharge ports that discharge water, a plurality of water discharge channels that supply raw water supplied from the raw water side flow channel to each of the plurality of water discharge ports, and a plurality of the water discharge channels. A water discharge form switching unit that switches the form of water discharge in the water discharge part by selecting and switching which raw water supplied from the raw water side flow path is used.
The water faucet device, wherein the water purification side flow path is always joined to any of the plurality of water discharge flow paths on the downstream side of the water discharge form switching unit. The plurality of water outlets include a shower water outlet that performs shower water discharge, and a straight water outlet that performs straight water discharge,
The plurality of water discharge channels include a water discharge channel for shower water discharge communicating with the shower water discharge port, and a water discharge channel for straight water discharge communicating with the straight water discharge port,
The faucet device according to claim 1, wherein the water purification-side flow path always joins the straight water discharge flow path.