JP6971096B2 - Mixing faucet - Google Patents

Description

The present invention relates to a mixing faucet.

Patent Document 1 discloses a conventional mixing faucet. This mixing faucet includes a hot water supply unit, a water supply unit, and a main body unit. The hot water supply unit, the water supply unit, and the main body portion are arranged side by side so as to sandwich the main body portion between them. The main body has a mixing valve. The mixing valve flows out the mixed hot water or water in which the hot water supplied from the hot water supply section and the water supplied from the water supply section are mixed. The mixed hot water or water that has passed through the mixing valve is discharged from a discharge pipe provided below the main body.

Japanese Unexamined Patent Publication No. 2000-96644

In the case of a conventional mixing faucet as in Patent Document 1, a flow path for supplying hot water or water to the mixing valve is formed in the main body. However, since the main body of such a mixing faucet is usually made of metal, the heat of the hot water flowing through the flow path is transferred to the water flowing through the flow path or the mixed hot water through the flow path wall to heat the mixing faucet. There was a problem that it would be done.

The present invention has been made in view of the above-mentioned conventional circumstances, and it is an object to be solved to provide a mixing faucet capable of suitably suppressing heat conduction from boiling water.

The mixing faucet of the present invention
A mixed hot water that is a mixture of hot water and water, or a mixed faucet that discharges water and hot water.
The hot water flow passage through which hot water flows and the hot water flow passage
A water passage through which water flows and
A heat transfer suppressing unit that suppresses heat conduction from the hot water flow passage to the water flow passage,
It is characterized by having.

Since this mixing faucet is provided with a heat transfer suppressing portion, heat conduction from the hot water flow passage to the water flow passage is suppressed. Therefore, the mixing faucet of the present invention can suppress the heat of the hot water in the hot water flow passage from being conducted to the water in the water flow passage to heat the water.

Therefore, the mixing faucet of the present invention can suitably suppress heat conduction from boiling water.

It is a perspective view which shows the mixing faucet which concerns on Example 1. FIG. It is a figure which shows typically the form of each flow passage of the mixing faucet which concerns on Example 1. FIG. It is a front sectional view which shows the mixing faucet which concerns on Example 1. FIG. FIG. 3 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 3 is a cross-sectional view taken along the line VV of FIG. It is a figure for demonstrating the form of each flow passage in the mixing faucet which concerns on Example 1. FIG. It is an enlarged view of the main part of FIG. 6, and is the figure which shows the base end side of a discharge pipe. It is an enlarged view of the main part of FIG. 6, and is the figure which shows the tip side of the discharge pipe. It is a plan sectional view which shows the mixing faucet which concerns on Example 2. FIG.

A preferred embodiment of the present invention will be described.

The mixing faucet of the present invention may be provided with a mixed hot water mixed with hot water and water, or a hot water flow passage through which water flows. Then, the heat transfer suppressing unit can suppress heat conduction from the hot water flow passage to the hot water flow passage. In this case, the heat transfer suppressing unit suppresses heat conduction from the hot water flow passage to the hot water flow passage, so that the heat of the hot water in the hot water flow passage is conducted to the mixed hot water or water in the hot water flow passage to conduct the mixed hot water or water. It is possible to prevent the water from being heated.

In the mixing faucet of the present invention, the hot water flow passage, the water flow passage, and the hot water flow passage are formed inside, and the hot water from the hot water flow passage and the water from the water flow passage are mixed to form the hot water. A main body portion having a mixing valve flowing out to the flow passage is provided, and the heat transfer suppressing portion may be configured to have the main body portion made of resin. In this case, by using a resin main body portion having a lower thermal conductivity than that of metal, it is possible to suppress heat conduction from the hot water flow passage to the hot water flow passage via the main body portion.

The mixing faucet of the present invention
A hot water supply unit that supplies hot water to the main body and
A water supply unit that supplies water to the main body and
The main body portion arranged between the hot water supply section and the water supply section is provided.
The heat transfer suppressing unit can suppress heat conduction from the hot water supply unit to the water supply unit.
In this case, the heat transfer suppressing unit suppresses heat conduction from the hot water supply unit via the main body to the water supply unit, so that the heat of the hot water in the hot water supply unit is conducted to the water in the water supply unit and heated. It can be suppressed.

The mixing faucet of the present invention
The hot water supply section that supplies hot water and
The water supply unit that supplies water and
In addition to accommodating the main body, the hot water supply unit and the metal case member attached to the water supply unit
A hot water connection pipe arranged in the case member, connecting the hot water supply unit and the main body portion, and supplying hot water from the hot water supply unit to the main body portion.
A water connection pipe, which is arranged in the case member, connects the water supply unit and the main body portion, and supplies water from the water supply unit to the main body portion, is provided.
The heat transfer suppressing portion may be configured to have the hot water connecting pipe made of resin and the water connecting pipe made of resin.
In this case, the material of the case member is made of metal, and the material of the hot water flow pipe and the water flow pipe is made of a resin having a lower thermal conductivity than that of metal, so that the hot water can be used while ensuring mechanical strength. It is possible to suppress heat conduction from the hot water flow passage to the water flow passage via the connection pipe and the water connection pipe.

In the mixing faucet of the present invention, the hot water flow passage and the hot water flow passage are formed inside, the upstream end is connected to the main body, and the hot water flow passage is at the downstream end. A connecting portion for connecting the hot water flow pipe member forming the hot water flow passage and the hot water flow pipe member forming the hot water flow passage is provided, and the heat transfer suppressing portion is configured to have the connecting portion made of resin. obtain. In this case, by using a resin-made connecting portion having a lower thermal conductivity than that of metal, it is possible to suppress heat conduction from the hot water flow passage to the hot water flow passage via the connecting portion.

The mixing faucet of the present invention is provided with a hot water flow pipe member forming the hot water flow passage and a discharge pipe in which the hot water flow pipe member forming the hot water flow passage is arranged inside.
The heat transfer suppressing unit can suppress heat conduction from the hot water flow pipe member to the hot water flow pipe member.
In this case, the heat transfer suppressing unit suppresses heat conduction from the hot water flow tube member to the hot water flow tube member, so that the heat of the hot water of the hot water flow tube member is conducted to the mixed hot water or water of the hot water flow tube member to be applied. It is possible to prevent it from being heated. As a result, heat dissipation and endothermic heat between the hot water, the mixed hot water, or the water flowing in one discharge pipe are suppressed, and the hot water, the mixed hot water, or the water can be suitably discharged. As a result, the size can be reduced as compared with the case where the discharge pipes for discharging the hot water and the mixed hot water or the water are separately provided, and the space can be saved.

Next, Examples 1 and 2 embodying the mixing faucet of the present invention will be described with reference to the drawings. In the following description, the vertical direction is defined as the vertical direction as it is in FIGS. 2 and 3, and the horizontal direction is defined as the horizontal direction as it is in FIGS. 2, 3 and 9. The front-back direction will be described with the left side appearing in FIG. 4 and the lower part appearing in FIG. 9 as the front side, and the right side appearing in FIG. 4 and the upper part appearing in FIG. 9 as the rear side.

<Example 1>
The mixing faucet 1 of the first embodiment is a wall-mounted faucet. As shown in FIGS. 1 to 5, the mixing faucet 1 includes a hot water supply unit 10, a water supply unit 20, and a main body unit 30. Further, the mixing faucet 1 includes a discharge pipe 40. Most of these parts are covered with a white resin cover, respectively, and it is said that the design is clean and white as a whole.

The hot water supply unit 10 supplies hot water. Specifically, the hot water supply unit 10 supplies hot water from a hot water supply pipe (not shown) drawn out to the wall surface to the main body unit 30. As shown in FIGS. 2 and 3, the hot water supply unit 10 has a hot water supply side mounting leg 11 and a hot water supply unit main body 12. The hot water supply side mounting leg 11 is made of brass and is formed in a tubular shape. Further, a resin cover 11A is attached to the hot water supply side mounting leg 11. The hot water supply side mounting legs 11 are formed in a so-called crank shape that bends in different directions at both ends. The hot water supply side mounting leg 11 is connected to a hot water supply pipe whose upstream end is pulled out to the wall surface. The downstream end of the hot water supply side mounting leg 11 is connected to the hot water supply unit main body 12. The hot water supply unit main body 12 is made of brass and is formed in a tubular shape extending in the front-rear direction. The hot water supply unit main body 12 communicates with the hot water supply side mounting leg 11 at the rear end portion.

Further, as shown in FIG. 5, a mixing hot water outlet 12A and a discharging hot water outlet 12B are formed on the right side surface of the hot water supply unit main body 12. The hot water outlet 12A for mixing and the hot water outlet 12B for discharging are formed by opening side by side in the front-rear direction on the right side surface of the hot water supply unit main body 12. Of these, the front mixing hot water outlet 12A communicates with the mixing hot water flow passage HM of the main body 30, which will be described later. The rear hot water outlet 12B for discharge communicates with the hot water discharge passage HD for discharge of the main body 30, which will be described later. That is, the hot water supply unit 10 is branched so as to supply hot water to each of the hot water flow passage HM for mixing and the hot water flow passage HD for discharge.

The water supply unit 20 supplies water. Specifically, the water supply unit 20 supplies water from a water supply pipe (not shown) drawn out to the wall surface to the main body unit 30. As shown in FIGS. 2 and 3, the water supply unit 20 has a water supply side mounting leg 21 and a water supply unit main body 22. The water supply side mounting leg 21 is made of brass and is formed in a tubular shape. The water supply side mounting leg 21 is formed in the same crank shape as the hot water supply side mounting leg 11. The water supply side mounting leg 21 is connected to a water supply pipe whose upstream end is pulled out to the wall surface. The downstream end of the water supply side mounting leg 21 is connected to the water supply unit main body 22. The water supply unit main body 22 is made of brass and is formed in a tubular shape extending in the front-rear direction. Further, as shown in FIG. 5, the water supply unit main body 22 communicates with the water supply side mounting leg 21 at the rear end portion. Further, a water outlet 22A is formed on the left side surface of the water supply unit main body 22. The water outlet 22A communicates with the water passage C of the main body 30, which will be described later.

As shown in FIGS. 2 and 3, the main body portion 30 is provided between the hot water supply unit 10 and the water supply unit 20. The main body 30 has a mixing valve 31 and a housing 32. The mixing valve 31 flows out the mixed hot water in which the hot water supplied from the hot water supply unit 10 and the water supplied from the water supply unit 20 are mixed or the water supplied from the water supply unit 20. The mixing valve 31 is a cartridge type that houses a plurality of slidable ceramic disc valves. The mixing valve 31 is operated by a lever type handle 50 described later.

The housing 32 is made of polyphenylene sulfide (PPS), which is a heat-resistant resin. The housing 32 has a substantially cylindrical shape extending vertically. The mixing valve 31 is housed in the upper part of the housing 32. Specifically, as shown in FIGS. 3 and 4, the housing 32 is formed with a bottomed storage space 32A opened upward at the top thereof. The mixing valve 31 is housed in this storage space 32A. Further, the housing 32 is formed with a bottomed connecting hole 32B opened downward at the lower portion. The connecting hole 32B is formed by gradually expanding the diameter from the bottom toward the end on the opening side in a stepped manner. The connecting portion 41 of the discharge pipe 40, which will be described later, is inserted into the connecting hole 32B.

Further, as shown in FIGS. 2 to 5, the housing 32 is formed with a hot water flow passage HM for mixing, a water flow passage C, a hot water flow passage M, and a hot water flow passage HD for discharge at the lower portion. That is, the mixing faucet 1 includes a mixing hot water flow passage HM and a discharge hot water flow passage HD, a water flow passage C, and a hot water flow passage M as the hot water flow passage according to the present invention. The hot water flow passage for mixing HM is a flow passage for supplying hot water to the mixing valve 31. In the mixing hot water flow passage HM, hot water from the hot water supply unit 10 is introduced into the mixing hot water inflow port 32C formed in front of the left side surface of the housing 32, and the hot water is circulated (see FIG. 5). The mixing hot water flow passage HM extends to the right from the mixing hot water inflow port 32C and is formed by bending upward at the center of the housing 32. The downstream end of the mixing hot water flow passage HM opens at the bottom of the storage space 32A and is connected to the mixing valve 31.

The water flow passage C is a flow passage that supplies water to the mixing valve 31. In the water flow passage C, water from the water supply unit 20 is introduced into the water inflow port 32D formed in front of the right side surface of the housing 32, and the water flows. The water flow passage C extends to the left from the water flow inlet 32D and is formed by bending upward at the central portion of the housing 32. The downstream end of the water flow passage C opens at the bottom of the storage space 32A and is connected to the mixing valve 31.

The hot water flow passage M is a flow passage through which the mixed hot water or water mixed by the mixing valve 31 flows. The hot water flow passage M has an upstream end open to the bottom of the storage space 32A and a downstream end to open to the bottom of the connecting hole 32B. That is, the hot water flow passage M extends up and down in a form in which the storage space 32A and the connecting hole 32B communicate with each other. The mixed hot water or water that has flowed through the hot water flow passage M is discharged from the hot water discharge port 45A formed at the tip of the discharge pipe 40 via the discharge pipe 40.

The hot water flow passage HD for discharge is a flow passage through which the hot water to be discharged flows. The hot water flow passage HD for discharge is a hot water flow passage of a system different from that of the hot water flow passage HM for mixing. The hot water flow passage HD for discharge is formed below the mixing valve 31. The discharge hot water flow passage HD is the left side surface of the housing 32, and is formed so as to extend to the right from the discharge hot water inlet 32E formed behind the mixing hot water inlet 32C. The downstream end of the hot water flow passage HD for discharge opens to the side of the connecting hole 32B and is connected to the connecting portion 41. The hot water that has flowed through the hot water flow passage HD for discharge is discharged from the hot water discharge port 43D formed at the tip of the discharge pipe 40 via the discharge pipe 40.

The main body portion 30 in the first embodiment functions as a heat transfer suppressing portion according to the present invention. That is, the main body portion 30 as a heat transfer suppressing portion has a housing 32, and the housing 32 comprises a hot water flow passage HM for mixing and a hot water flow passage HD for discharge as a hot water flow passage, and a water flow passage C. It is formed inside and suppresses heat conduction from the hot water flow passage HM for mixing and the hot water flow passage HD for discharge to the water flow passage C. Further, the housing 32 has a hot water flow passage M formed inside, and suppresses heat conduction from the hot water flow passage HM for mixing and the hot water flow passage HD for discharge to the hot water flow passage M. That is, in the first embodiment, it can be said that the heat transfer suppressing portion includes the main body portion 30 having the resin housing 32. Further, it can be said that the heat transfer suppressing portion configured to have such a main body portion 30 suppresses heat conduction from the hot water supply section 10 to the water supply section 20.

As shown in FIGS. 3 to 5, the hot water supply unit 10, the water supply unit 20, and the main body unit 30 are fixed to the bracket 2 on the back surface (the surface facing the wall surface) of each. The bracket 2 has a substantially rectangular shape that is long in the left-right direction when viewed from the front. The bracket 2 is fixed in the form of arranging the hot water supply unit 10, the main body unit 30, and the water supply unit 20 in this order from the left side. With the hot water supply section 10, the water supply section 20, and the main body section 30 fixed to the bracket 2 in this way, the hot water supply section 10, the water supply section 20, and the main body section 30 are covered with the cover member 3 together with the bracket 2. ing.

Further, as shown in FIGS. 2 and 5, the main body portion 30 and the hot water supply section 10 and the main body section 30 and the water supply section 20 are connected via connection pipes 13, 14, and 23, respectively. The connecting pipes 13, 14 and 23 are each made of brass. Of these connecting pipes 13, 14, 23, the upstream end of the connecting pipe 13 is connected to the hot water outlet for mixing 12A of the main body 12 of the hot water supply unit, and the downstream end is the hot water inlet for mixing of the housing 32 of the main body 30. It is connected to 32C. The upstream end of the connection pipe 14 is connected to the hot water outlet 12B for discharging the hot water supply unit 12, and the downstream end is connected to the hot water outlet 32E for discharging the housing 32 of the main body 30. The upstream end of the connection pipe 23 is connected to the water outlet 22A of the main body 22 of the water supply unit, and the downstream end is connected to the water inlet 32D of the housing 32 of the main body 30.

The discharge pipe 40 is rotatably connected to the main body 30. The discharge pipe 40 includes a first pipe portion 40A extending downward from the main body portion 30 along the rotation axis and a second pipe extending linearly from the lower end portion of the first pipe portion 40A in a direction intersecting the rotation shaft. It has a portion 40B and is formed in a substantially L shape as a whole. The discharge pipe 40 is rotatable within a range of about 180 ° in a horizontal plane centering on the front front of the main body 30. The discharge pipe 40 is formed with a hot water flow passage HP on the discharge pipe side and a hot water flow passage MP on the discharge pipe side from the upper end portion of the first pipe portion 40A to the tip end portion of the second pipe portion 40B.

As shown in FIGS. 6 to 8, the discharge pipe 40 has a connecting portion 41, a hot water flow pipe member 42, a hot water discharge portion 43, a hot water flow pipe member 44, a hot water discharge portion 45, and a discharge pipe cover member 46. ing. In such a discharge pipe 40, the discharge pipe side hot water flow passage HP is formed over the connecting portion 41, the hot water flow pipe member 42, and the hot water discharge portion 43, and the discharge pipe side hot water flow passage MP is connected. It is formed over a portion 41, a hot water flow pipe member 44, and a hot water discharge portion 45. The connecting portion 41, the hot water flow pipe member 42, the hot water discharge portion 43, the hot water flow pipe member 44, and the hot water discharge portion 45 are housed in the discharge pipe cover member 46.

As shown in FIGS. 4 and 7, the connecting portion 41 is arranged at the upper end portion of the first pipe portion 40A. The connecting portion 41 is made of PPS resin, and a hot water flow passage HP on the discharge pipe side and a hot water flow passage MP on the discharge pipe side are formed therein. The connecting portion 41 has a cylindrical shape whose diameter is reduced in a stepped shape as the upper end portion toward the upper end. The discharge pipe 40 rotates the central axis of the first pipe portion 40A as a whole by rotatably inserting the upper end portion of the connecting portion 41 into the connecting hole 32B formed in the housing 32 of the main body portion 30. It is possible to rotate with respect to the main body 30 as a moving axis. The outer periphery of the lower end of the connecting portion 41 is covered with a fixing nut 47. The fixing nut 47 is made of brass. The fixing nut 47 receives a moment load or the like acting on the connecting portion 41 to prevent the connecting portion 41 from being damaged.

As shown in FIG. 7, the connecting portion 41 has a hot water inflow port 41A formed on the side surface of the upper end portion. The hot water inflow port 41A communicates with the annular space 32F formed between the connecting portion 41 and the housing 32 in a state where the connecting portion 41 is inserted into the connecting hole 32B of the housing 32. The hot water inflow port 41A communicates with the discharge hot water flow passage HD on the main body 30 side via the annular space 32F. The hot water inflow port 41A is formed by opening in the extending direction of the second pipe portion 40B of the discharge pipe 40, but since it communicates with the annular space 32F, the position in the circumferential direction accompanying the rotation of the connecting portion 41. Regardless of the change, it is in a state of always communicating with the hot water flow passage HD for discharge on the main body 30 side.

Further, the connecting portion 41 has a hot water inflow port 41B formed on the upper end surface thereof. The hot water inflow port 41B communicates with the hot water flow passage M on the main body 30 side in a state where the connecting portion 41 is inserted into the connecting hole 32B of the housing 32. The hot water inflow port 41B is formed by opening coaxially with the axis of the connecting portion 41. Therefore, the hot water inflow port 41B does not change its position in the circumferential direction due to the rotation of the connecting portion 41, and is always in communication with the hot water flow passage M on the main body 30 side.

The hot water outlet 41C and the hot water outlet 41D are formed on the lower end surface of the connecting portion 41. The hot water outlet 41C flows out the hot water that has flowed in from the hot water inlet 41A at the upper end. The hot water outlet 41D flows out the mixed hot water or water that has flowed in from the hot water inlet 41B that opens on the upper end surface. The hot water outlet 41C and the hot water outlet 41D are arranged side by side along the extending direction of the second pipe portion 40B of the discharge pipe 40.

The inside of the hot water flow pipe member 42 is a hot water flow passage HP on the discharge pipe side. As shown in FIG. 6, the hot water flow pipe member 42 includes a brass connecting elbow 42A and a copper straight pipe 42B. The connecting elbow 42A is a pipe joint having a substantially L-shape. The upstream end of the connecting elbow 42A is inserted into the hot water outlet 41C of the connecting portion 41 from below. The downstream end of the connecting elbow 42A opens laterally toward the extending direction of the second pipe portion 40B of the discharge pipe 40. The upstream end of the straight pipe 42B is inserted into the downstream end of the connecting elbow 42A. The straight pipe 42B is arranged in the second pipe portion 40B of the discharge pipe 40 along the extending direction of the second pipe portion 40B. As shown in FIGS. 6 and 8, the straight pipe 42B has a downstream end connected to a hot water discharge portion 43. The hot water discharge unit 43 has a built-in hot water discharge valve 43A. The hot water discharge valve 43A is an on-off valve with a flow rate adjusting function, and can be opened and closed by rotating the rotary handle 60, which will be described later, to adjust the amount of hot water discharged. Further, the hot water discharge unit 43 includes a valve storage unit 43B for accommodating the hot water discharge valve 43A and a strainer unit 43C for rectifying the hot water flowing out from the hot water discharge valve 43A. Both the valve accommodating portion 43B and the strainer portion 43C are made of metal. The hot water that has passed through the hot water discharge unit 43 is discharged from the hot water discharge port 43D formed at the downstream end of the strainer unit 43C.

The inside of the hot water flow pipe member 44 is a hot water flow passage MP on the discharge pipe side. As shown in FIG. 6, the hot water flow pipe member 44 includes a brass connection socket 44A and a copper L-shaped pipe 44B formed in a substantially L-shape. The connection socket 44A is a pipe joint having a straight pipe shape. The upstream end of the connection socket 44A is inserted into the hot water outlet 41D of the connecting portion 41 from below. The upstream end of the L-shaped tube 44B is inserted into the downstream end of the connection socket 44A from below. As shown in FIG. 7, the L-shaped tube 44B has an upstream end extending up and down in the first tube portion 40A. The L-shaped pipe 44B is arranged at a distance below the straight pipe 42B in the second pipe portion 40B so that the downstream side extends substantially parallel to the straight pipe 42B of the hot water flow pipe member 42. The downstream end of the L-shaped pipe 44B is connected to the hot water discharge portion 45. The hot water discharge portion 45 is made of PPS resin, and an L-shaped hot water flow passage MP on the discharge pipe side is formed inside the hot water discharge portion 45. The mixed hot water or water that has passed through the hot water discharge unit 45 is discharged from the hot water discharge port 45A. As shown in FIG. 8, the hot water discharge section 45 is arranged adjacent to the valve storage section 43B and the strainer section 43C of the hot water discharge section 43, but because it is made of PPS resin, the hot water flow path on the discharge pipe side is provided. Heat conduction from the HP is suppressed to prevent the mixed hot water or water in the hot water flow passage MP on the discharge pipe side from being heated. That is, in Example 1, it can be said that the hot water discharge portion 45 formed of the resin constitutes a heat transfer suppressing portion.

The connecting portion 41 functions as a heat transfer suppressing portion according to the present invention by the above-described configuration. That is, the connecting portion 41 is made of resin, and the hot water flow passage HP on the discharge pipe side as the hot water flow passage according to the present invention and the hot water flow passage MP on the discharge pipe side as the hot water flow passage according to the present invention are formed. , The upstream end is connected to the main body 30, and the hot water flow pipe member 42 forming the discharge pipe side hot water flow passage HP and the hot water flow path MP forming the discharge pipe side hot water flow passage MP are formed from the downstream end. The pipe member 44 is extended respectively. Then, the connecting portion 41 suppresses heat conduction from the hot water flow passage HP on the discharge pipe side to the hot water flow passage MP on the discharge pipe side. That is, in the first embodiment, the heat transfer suppressing portion is configured to have a resin connecting portion 41.

Further, with the above-described configuration, the hot water flow pipe member 42 and the hot water flow pipe member 44 function as the heat transfer suppressing unit according to the present invention. That is, the heat transfer suppressing unit suppresses heat conduction from the hot water flow pipe member 42 to the hot water flow pipe member 44. Specifically, the discharge pipe 40 is internally arranged with a hot water flow pipe member 42 forming the hot water flow passage HP on the discharge pipe side and a hot water flow pipe member 44 forming the hot water flow passage MP on the discharge pipe side. The hot water flow pipe member 42 and the hot water flow pipe member 44 are arranged side by side so as to extend in the discharge pipe 40 toward the downstream side. That is, in the first embodiment, it can be said that the heat transfer suppressing portion includes the hot water flow pipe member 42 and the hot water flow pipe member 44 that extend toward the downstream side in a form in which they are arranged side by side.

The discharge pipe cover member 46 constitutes the outer shell of the first pipe portion 40A and the second pipe portion 40B. That is, the discharge pipe cover member 46 houses the hot water flow pipe member 42, the hot water discharge unit 43, the hot water flow pipe member 44, and the hot water discharge unit 45. Further, the discharge pipe cover member 46 houses the connecting portion 41 and the lower end portion of the fixing nut 47 at the upper end portion of the portion constituting the outer shell of the first pipe portion 40A. Each of the first pipe portion 40A and the second pipe portion 40B in which the discharge pipe cover member 46 constitutes the outer shell has a substantially cylindrical appearance, and the first pipe portion 40A is formed to be thicker than the second pipe portion 40B. Has been done. Further, the first pipe portion 40A extends in the vertical direction when the mixing faucet 1 is installed, and the second pipe portion 40B is formed so as to protrude from the side surface of the first pipe portion 40A and is straight in the lateral direction. It extends up.

The lever type handle 50 is an operation handle that adjusts the mixing ratio and the discharge amount of the mixed hot water by the mixing valve 31 of the main body portion 30. The lever-type handle 50 is provided on the upper portion of the main body portion 30 so as to be rotatable around two axes, a shaft extending in the horizontal direction and a shaft extending in the vertical direction. The lever type handle 50 adjusts the discharge amount of the mixed hot water including the water stop state by the rotation operation around the horizontal axis, that is, the rotation operation in which the tip of the lever type handle 50 moves up and down. Further, the lever type handle 50 adjusts the mixing ratio of the mixed hot water including the discharge of only water by the rotation operation around the vertical axis, that is, the rotation operation in which the tip of the lever type handle 50 moves horizontally.

The rotary handle 60 is an operation handle that adjusts the discharge amount of hot water discharged from the hot water discharge port 43D (including the water stop state). The rotary handle 60 is provided at the tip of the discharge pipe 40. The rotary handle 60 is rotatably provided around the axis of the second pipe portion 40B of the discharge pipe 40. The rotary handle 60 has a substantially cylindrical shape having a diameter substantially the same as the outer diameter of the discharge pipe 40, and its central axis is coaxial with the central axis of the second pipe portion 40B of the discharge pipe 40, and the tip of the discharge pipe 40 is coaxial. Is located in.

Next, the operation of the mixing faucet 1 of the first embodiment configured as described above will be described.
The mixing faucet 1 operates a rotary handle 60 when discharging hot water. As a result, the hot water supplied from the hot water supply unit 10 flows in from the discharge hot water inflow port 32E of the housing 32 of the main body unit 30 via the connection pipe 14. The inflowing hot water flows through the hot water flow passage HD for discharge and the hot water flow passage HP on the discharge pipe side, and is discharged from the hot water discharge port 43D. On the other hand, this mixing faucet 1 operates the lever type handle 50 when discharging the mixed hot water or water. The mixing valve 31 is operated by the lever type handle 50. A hot water flow passage HM for mixing and a water flow passage C are connected to the mixing valve 31, and the mixed hot water or water mixed with the hot water and water supplied through these is discharged. The mixed hot water or water flowing out of the mixing valve 31 is discharged from the hot water discharge port 45A via the hot water flow passage M and the hot water flow passage MP on the discharge pipe side.

As described above, the mixing faucet 1 of the first embodiment is used for mixing the hot water flow passage HM for mixing and the hot water flow passage HD for discharge as the hot water flow passage through which hot water flows, and the water flow passage C through which water flows. It is provided with a resin main body portion 30 as a heat transfer suppressing portion that suppresses heat conduction from the hot water flow passage HM and the hot water flow passage HD for discharge to the water flow passage C.

Since the mixing faucet 1 includes a main body portion 30 as a heat transfer suppressing portion, heat conduction from the mixing hot water flow passage HM and the discharge hot water flow passage HD to the water flow passage C is suppressed. Therefore, the mixing faucet 1 suppresses the heat of the hot water in the hot water flow passage HM for mixing and the hot water flow passage HD for discharge from being conducted to the water in the water flow passage C to heat the water. Can be done.

Therefore, in the mixing faucet 1 of the first embodiment, the mixing faucet 1 can suitably suppress the heat conduction from the boiling water.

Further, the mixing faucet 1 includes a mixed hot water mixed with hot water and water, or a hot water flow passage M through which water flows. The resin main body 30 as the heat transfer suppressing portion suppresses heat conduction from the hot water flow passage HM for mixing and the hot water flow passage HD for discharge to the hot water flow passage M. In this way, the main body 30 as the heat transfer suppressing portion suppresses heat conduction from the hot water flow passage HM for mixing and the hot water flow passage HD for discharge to the hot water flow passage M, so that the hot water flow passage HM for mixing and the discharge are suppressed. It is possible to prevent the heat of the hot water in the hot water flow passage HD from being conducted to the mixed hot water or water in the hot water flow passage M and being heated.

Further, the mixing faucet 1 is formed with a hot water flow passage HM for mixing, a hot water flow passage HD for discharge, a water flow passage C, and a hot water flow passage M inside, and hot water and water flow from the hot water flow passage HM for mixing. A resin main body portion 30 having a mixing valve 31 that mixes water from the passage C and flows out to the hot water flow passage M is provided, and the heat transfer suppressing portion is configured to have the main body portion 30. .. As described above, by forming the main body portion made of resin having a lower thermal conductivity than that of metal, it is possible to suppress heat conduction from the hot water flow passage to the hot water flow passage via the main body portion.

Further, the mixing faucet 1 is provided with a hot water supply unit 10 for supplying hot water to the main body 30 and a water supply unit 20 for supplying water to the main body 30, and the main body 30 is provided with the hot water supply unit 10 and water supply. It is arranged between the unit 20 and the unit 20. The main body 30 as a heat transfer suppressing section suppresses heat conduction from the hot water supply section 10 to the water supply section 20. In this way, the main body 30 as the heat transfer suppressing unit suppresses heat conduction from the hot water supply unit 10 to the water supply unit 20 via the main body 30, so that the heat of the hot water of the hot water supply unit 10 is the water of the water supply unit 20. It is possible to prevent the heat from being conducted and heated.

Further, in the mixing faucet 1, a discharge pipe side hot water flow passage HP as a hot water flow passage and a discharge pipe side hot water flow passage MP as a hot water flow passage are formed inside, and the upstream end is the main body 30. A resin connecting portion 41 is provided at the downstream end to which the hot water flow pipe member 42 forming the hot water flow passage and the hot water flow pipe member 44 forming the hot water flow passage are connected to each other. The heat transfer suppressing portion is configured to have the connecting portion 41. As described above, by forming the connecting portion made of resin having a lower thermal conductivity than that of metal, it is possible to suppress the heat conduction from the hot water flow passage to the hot water flow passage via the connecting portion.

Further, in the mixing faucet 1, the hot water flow pipe member 42 forming the hot water flow passage HP on the discharge pipe side as the hot water flow passage and the hot water flow pipe member 44 forming the hot water flow passage MP on the discharge pipe side as the hot water flow passage A discharge pipe 40 arranged inside is provided. Then, the heat transfer suppressing unit suppresses heat conduction from the hot water flow pipe member 42 to the hot water flow pipe member 44. In this way, the heat transfer suppressing section suppresses heat conduction from the hot water flow tube member to the hot water flow tube member via the main body 30, so that the heat of the hot water of the hot water flow tube member is the mixed hot water of the hot water flow tube member. Alternatively, it can be prevented from being heated by being conducted by water. As a result, heat dissipation and heat absorption between the hot water, the mixed hot water, or the water flowing in one discharge pipe 40 are suppressed, so that the hot water, the mixed hot water, or the water can be suitably discharged. As a result, the size can be reduced as compared with the case where the hot water and the discharge pipe for discharging the mixed hot water or water are separately provided, and the space can be saved.

Further, since the mixing faucet 1 is provided with a resin main body portion 30 as a heat transfer suppressing portion, heat can be dissipated from the hot water in the hot water flow passage HM for mixing and the hot water flow passage HD for discharge as the hot water flow passage. It is suppressed and the temperature drop of boiling water can be suppressed.

<Example 2>
Next, the mixing faucet 201 according to the second embodiment will be described with reference to FIG. 9 and the like. The mixing faucet 201 is different from the first embodiment in that the hot water supply section and the main body section and the water supply section and the main body section are connected. In the following description of the second embodiment, the same reference numerals are given to the same configurations as those of the first embodiment, and detailed description thereof will be omitted.

As shown in FIG. 9, the mixing faucet 201 includes a hot water supply unit 210, a water supply unit 220, and a main body unit 30 similar to that of the first embodiment. Further, the mixing faucet 201 includes a case member 204, a hot water connecting pipe 205, and a water connecting pipe 206. The hot water supply unit 210 includes a hot water supply side mounting leg 11. However, the hot water supply unit 210 of the second embodiment does not have a member corresponding to the hot water supply unit main body 12 of the first embodiment, and the upstream side of the hot water supply side mounting leg 11 is directly attached to the case member 204. Similarly, the water supply unit 220 includes the water supply side mounting legs 21, but does not include a member corresponding to the water supply unit main body 22 of the first embodiment. Similar to the hot water supply side mounting leg 11, the upstream side of the water supply side mounting leg 21 is directly attached to the case member 204.

The case member 204 is made of brass. The case member 204 is formed in a long shape in the left-right direction. Further, the case member 204 houses the main body portion 30. Specifically, the case member 204 forms a storage space 204A penetrating in the left-right direction. In the case member 204, lid members 204B and 204C are detachably attached to the left and right ends, respectively, by screwing to seal each opening. The case member 204 houses the main body 30 in the central portion of the storage space 204A in the left-right direction. The case member 204 is attached to the hot water supply unit 210 and the water supply unit 220 at both ends in the left-right direction on the back surface (the surface facing the wall surface), respectively. The case member 204 is formed with openings (not shown) on the upper and lower surfaces of the central portion in the left-right direction. Of these openings, the opening on the upper surface is an opening for connecting the main body 30 lever type handle 50 to the main body 30, and is also used when the main body 30 is housed in the case member 204. The opening on the lower surface is an opening for connecting the discharge pipe 40 to the main body 30.

The hot water connecting pipe 205 is arranged in the case member 204. The hot water connection pipe 205 connects the hot water supply section 210 and the main body section 30 to supply hot water from the hot water supply section 210 to the main body section 30. Specifically, the hot water connection pipe 205 communicates the upstream end of the hot water supply side mounting leg 11 with the hot water inlet 32E for discharge and the hot water inlet 32C for mixing of the housing 32 of the main body 30. It is arranged on the left side of the main body 30 in the storage space 204A of 204. The hot water connection pipe 205 functions as a hot water flow passage for circulating hot water from the hot water supply section 210 to the main body section 30.

The hot water connecting pipe 205 is formed by combining three pipe members, a first hot water connecting pipe 205A, a second hot water connecting pipe 205B, and a third hot water connecting pipe 205C. The first hot water connecting pipe 205A, the second hot water connecting pipe 205B, and the third hot water connecting pipe 205C are all made of PPS resin. That is, the hot water connecting pipe 205 is the heat transfer suppressing unit according to the present invention. The first hot water connecting pipe 205A is arranged so that the upstream end is connected to the hot water supply side mounting leg 11 of the hot water supply unit 210 and extends forward. The connecting pipe 205B for the second hot water is formed in a form extending in the left-right direction. The second hot water connecting pipe 205B is connected to the first hot water connecting pipe 205A at the opening on the left back surface, which is the upstream end. Further, the second hot water connecting pipe 205B is formed by branching in a form in which two openings are formed at the right end portion which is the end portion on the downstream side. In the second hot water connection pipe 205B, one of the branched downstream ends is connected to the hot water inlet 32E for discharging the housing 32 of the main body 30, and the other is connected to the hot water inlet 32C for mixing of the housing 32 of the main body 30. 3 It is connected via a hot water connecting pipe 205C.

When storing the hot water connection pipe 205 in the case member 204, first, the second hot water connection pipe 205B with the third hot water connection pipe 205C assembled is inserted through the opening at the left end of the case member 204. Then, it is connected to the housing 32 of the main body portion 30. After inserting the second hot water connecting pipe 205B, the lid member 204B is attached to seal the opening of the case member 204. Then, the first hot water connecting pipe 205A is inserted through the opening on the back surface and connected to the second hot water connecting pipe 205B. If the hot water supply side mounting leg 11 is attached to the opening on the back surface of the case member 204 in this state, the hot water supply side mounting leg 11 and the housing 32 are communicated with each other, and hot water can be supplied from the hot water supply section 210 to the main body section 30.

The water connecting pipe 206 is arranged in the case member 204. The water connection pipe 206 connects the water supply section 220 and the main body section 30 to supply water from the water supply section 220 to the main body section 30. Specifically, the water connection pipe 206 communicates the upstream end of the water supply side mounting leg 21 with the water inlet 32D of the housing 32 of the main body 30, and the main body 30 in the storage space 204A of the case member 204. It is arranged on the right side. The water connection pipe 206 functions as a water flow passage for water to flow from the water supply unit 220 to the main body portion 30.

The water connection pipe 206 is formed by combining two pipe members, a first water connection pipe 206A and a second water connection pipe 206B. The first water connecting pipe 206A and the second water connecting pipe 206B are also made of PPS resin. That is, the water connecting pipe 206 is the heat transfer suppressing unit according to the present invention. The first water connection pipe 206A is arranged so that the upstream end is connected to the water supply side mounting leg 21 of the water supply unit 220 and extends forward. The second water connecting pipe 206B is formed in a form extending in the left-right direction. The second water connection pipe 206B is connected to the first water connection pipe 206A at the opening on the right back surface which is the upstream end, and the housing 32 of the main body 30 is connected at the opening at the left end portion which is the downstream end. It is connected to the water inlet 32D of.

When the water connection pipe 206 is housed in the case member 204, the second water connection pipe 206B is first inserted through the opening at the right end of the case member 204 and connected to the housing 32 of the main body 30. After inserting the second water connection pipe 206B, the lid member 204C is attached to seal the opening of the case member 204. Then, the first water connection pipe 206A is inserted through the opening on the back surface and connected to the second water connection pipe 206B. If the water supply side mounting leg 21 is attached to the opening on the back surface of the case member 204 in this state, the water supply side mounting leg 21 and the housing 32 are communicated with each other, and water can be supplied from the water supply portion 220 to the main body portion 30.

The mixing faucet 201 having the above configuration has the same effect as that of the first embodiment. Further, the mixing faucet 201 houses a hot water supply unit 210 for supplying hot water, a water supply unit 220 for supplying water, and a main body portion 30, and is a metal case member attached to the hot water supply unit 210 and the water supply unit 220. 204, a resin hot water connection pipe 205 arranged in the case member 204, connecting the hot water supply unit 210 and the main body portion 30 to supply hot water from the hot water supply unit 210 to the main body unit 30, and the inside of the case member 204. A resin water connection pipe 206 that connects the water supply unit 220 and the main body 30 and supplies water from the water supply unit 220 to the main body 30 is provided. The heat transfer suppressing portion includes the resin-made hot water connecting pipe 205 and the resin-made water connecting pipe 206. In this way, the material of the case member 204 is made of metal, and the material of the hot water flow pipe 205 and the water flow pipe 206 is made of a resin having a lower thermal conductivity than that of metal, thereby ensuring mechanical strength. At the same time, it is possible to suppress heat conduction from the hot water flow passage to the water flow passage via the hot water connection pipe and the water connection pipe. Further, by forming the hot water flow passage and the water flow passage in the metal case member 204 by the resin connecting pipes 205 and 206 as the heat transfer suppressing portions, the heat transfer on the upstream side of the main body portion 30 is also suppressed. be able to.

The present invention is not limited to Examples 1 and 2 described with reference to the above description and drawings, and for example, the following examples are also included in the technical scope of the present invention.
(1) In the above-mentioned Examples 1 and 2, the embodiment including the discharge pipe bent in an L shape is exemplified, but the shape of the discharge pipe and the like are not particularly limited. The discharge pipe may be configured in a curved shape, for example, like a so-called gooseneck.
(2) In Examples 1 and 2, a hot water flow passage and a hot water flow passage are formed in one discharge pipe, and a mode in which hot water and mixed hot water or water are discharged from this one discharge pipe is exemplified. The hot water flow passage and the hot water flow passage may be formed separately in different discharge pipes.
(3) In the above-mentioned Examples 1 and 2, the embodiment in which the main body portion made of PPS resin is provided as the heat transfer suppressing portion is exemplified, but when the main body portion is provided, the main body portion may be the heat transfer suppressing portion. Not required. Further, when the main body portion as the heat transfer suppressing portion is provided, the material is preferably a material having a relatively low thermal conductivity, and further preferably a material having excellent heat resistance.
(4) In Examples 1 and 2 above, a mode in which a connecting portion made of PPS resin is provided as a heat transfer suppressing portion is exemplified, but when the connecting portion is provided, the connecting portion may be a heat transfer suppressing portion. Not required. Further, when the connecting portion as the heat transfer suppressing portion is provided, the material is preferably a material having a relatively low thermal conductivity, and further preferably a material having excellent heat resistance.
(5) In the second embodiment, the embodiment in which the hot water connecting pipe and the water connecting pipe made of PPS are provided as the heat transfer suppressing portion is exemplified, but when the hot water connecting pipe and the water connecting pipe are provided, the case where the hot water connecting pipe and the water connecting pipe are provided is illustrated. It is not essential that these are heat transfer suppressors. Further, when a hot water connecting pipe and a water connecting pipe are provided as heat transfer suppressing portions, the material is preferably a material having a relatively low thermal conductivity.
(6) In the first embodiment, the embodiment provided with the metal connecting pipes connecting the main body, the hot water supply section, and the water supply section is illustrated, but this is not essential, and the main body section, the hot water supply section, and the water supply section are provided. May be in the form of directly connecting. Further, when the connecting pipe is provided, the material thereof is not particularly limited, but for example, the heat transfer suppressing effect can be improved by using a material having a relatively low thermal conductivity such as PPS resin.
(7) In Examples 1 and 2 above, an example is provided in which a metal hot water flow pipe member and a discharge pipe having a specific configuration in which a hot water flow pipe member is arranged are illustrated, but this is not essential. When the hot water flow pipe member and the hot water flow pipe member are provided, the material thereof may be another material such as resin. Further, it is preferable to use a material such as PPS resin having a relatively low thermal conductivity as the material of the hot water flow pipe member and the hot water flow pipe member because the heat transfer suppressing effect can be improved.
(8) In the first embodiment, a mode including a hot water supply unit and a water supply unit each composed of two members is illustrated, but this is not essential. When the hot water supply unit and the water supply unit are provided, they may be configured by one or three or more members, respectively.

1,201 ... Mixing faucet 2 ... Bracket 3 ... Cover member 10,210 ... Hot water supply section 11 ... Hot water supply side mounting leg 11A ... Cover 12 ... Hot water supply section main body 12A, 12B ... Hot water outlet (12A ... Hot water outlet for mixing, 12B ... Hot water outlet for discharge)
13, 14, 23 ... Connection pipes 20, 220 ... Water supply section 21 ... Water supply side mounting legs 22 ... Water supply section main body 22A ... Water outlet 30 ... Main body section 31 ... Mixing valve 32 ... Housing 32A ... Storage space 32B ... Connecting hole 32C, 32D, 32E ... Inflow port (32C ... Hot water inlet for mixing, 32D ... Water inlet, 32E ... Hot water inlet for discharge)
32F ... Circular space 40 ... Discharge pipe 40A ... First pipe part 40B ... Second pipe part 41 ... Connecting parts 41A, 41B ... Inflow port (41A ... Hot water inflow port, 41B ... Hot water inflow port)
41C, 41D ... Outlet (41C ... Hot water outlet, 41D ... Hot water outlet)
42 ... Hot water flow pipe member 42A ... Connection elbow 42B ... Straight pipe 43 ... Hot water discharge part 43A ... Hot water discharge valve 43B ... Valve storage part 43C ... Strainer part 43D ... Hot water discharge port 44 ... Hot water flow pipe member 44A ... Connection socket 44B ... L-shaped pipe 45 ... Hot water discharge part 45A ... Hot water discharge port 46 ... Discharge pipe cover member 47 ... Fixed nut 50 ... Lever type handle 60 ... Rotating handle 204 ... Case member 204A ... Case member storage space 204B, 204C ... Lid Member 205 ... Hot water connection pipe (205A ... 1st hot water connection pipe, 205B ... 2nd hot water connection pipe, 205C ... 3rd hot water connection pipe)
206 ... Water connection pipe (206A ... First water connection pipe, 206B ... Second water connection pipe)
C ... water flow passage HD, HM, HP ... hot water flow passage (HD ... hot water flow passage for discharge, HM ... hot water flow passage for mixing, HP ... hot water flow passage on the discharge pipe side)
M, MP ... Hot water flow passage (M ... Hot water flow passage, MP ... Discharge pipe side hot water flow passage)

Claims (3)

A mixed hot water that is a mixture of hot water and water, or a mixed faucet that discharges water and hot water.
The hot water flow passage through which hot water flows and the hot water flow passage
A water passage through which water flows and
A heat transfer suppressing unit that suppresses heat conduction from the hot water flow passage to the water flow passage,
A mixed hot water mixed with hot water and water, or a hot water flow passage through which water flows,
Equipped with a,
The hot water flow passage, the water flow passage, and the hot water flow passage are formed inside, and a mixing valve that mixes hot water from the hot water flow passage and water from the water flow passage and flows out to the hot water flow passage is provided. The main body that I had and
The hot water supply section that supplies hot water and
The water supply unit that supplies water and
In addition to accommodating the main body, the hot water supply unit and the metal case member attached to the water supply unit
A hot water connection pipe arranged in the case member, connecting the hot water supply unit and the main body portion, and supplying hot water from the hot water supply unit to the main body portion.
A water connection pipe, which is arranged in the case member, connects the water supply unit and the main body portion, and supplies water from the water supply unit to the main body portion, is provided.
The heat transfer suppressing portion is configured to have the main body portion made of resin, the hot water connecting pipe made of resin, and the water connecting pipe made of resin, and heat from the hot water flow passage to the hot water flow passage. mixing faucet to suppress conduction. The hot water flow passage and the hot water flow passage are formed inside, and the hot water flow pipe member and the hot water flow pipe member having an upstream end connected to the main body and forming the hot water flow passage at the downstream end. It is provided with a connecting portion to which the hot water flow pipe members forming the hot water flow passage are connected to each other.
Water mixing of the heat transfer suppressing section according to請Motomeko 1 that is configured to have the connection portion made of resin. A discharge pipe in which the hot water flow pipe member forming the hot water flow passage and the hot water flow pipe member forming the hot water flow passage are arranged inside is provided.
The heat transfer suppressing section, mixing faucet according from the hot water circulation pipe member in any one of the hot water circulation pipe請Motomeko 1 and claim 2 that to suppress the heat conduction to the members.

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