JP2016089429A - Hot and cold water mixing faucet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot and cold water mixing faucet device that may be drained readily without complicated operations.SOLUTION: A hot and cold water mixing faucet device 1 of the present invention includes: a faucet body 2 having a hot and cold water mixing part 16 where hot water supplied from a hot water source and cold water supplied from a cold water source are mixed; an air intake and water draining valve 34 that is fitted on the faucet body 2, is opened/closed manually, and takes in air and drains water for the faucet body; and a manual operation part 58 that performs manual opening/closing operations for the air intake and water draining valve. The air intake and water draining valve is opened by manually operating the manual operation part after a water draining operation, during which cold water supply to the faucet body is halted, and takes in air to respective channels for hot water and cold water on an upstream side of the hot and cold water mixing part, and takes in air or drains water for a hot water channel on a downstream side of the hot and cold water mixing part.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a hot and cold water mixing faucet device, and more particularly to a hot and cold water mixing faucet device used in cold districts for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source. .

First, as a single water faucet device that is used in cold districts and stops water supplied from a water supply source, for example, in Patent Document 1, this water tap is connected to a water pipe, There is described a tap faucet provided with a plug function part for switching between water discharge and water stop and an intake valve provided between the connection part and the plug function part.
When this faucet is installed in a cold region, it is necessary to drain water at night to prevent the water inside the faucet body and water pipe from freezing. By operating the stopper to the drain side, water staying in the flow path is discharged. That is, when outside air is sucked into the flow path from the intake valve, the water staying in the flow path from the downstream side of the drain plug to the upstream side of the tap function part of the tap is discharged. It has become.
On the other hand, on the downstream side of the stopper function part, a part of the residual water may be discharged from the water outlet, but there is a high possibility that the residual water will stay, and all the residual water can be completely discharged from the water outlet. There is a problem that it is difficult.

  Further, Patent Document 2 describes an intake valve that is connected in the middle of a water pipe in a cold region and introduces air into the pipe to cause drainage. This intake valve is provided with a water pressure from the water pipe and a piston that opens and closes the intake port upstream of the intake valve by means of a spring. When the pressure is exceeded, the piston closes the intake port, and during draining operation, the pressure of water falls below the restoring force of the spring, so that the piston opens the intake port and outside air is drawn from the intake valve. Yes.

Furthermore, Patent Document 3 describes an automatic drain valve that is provided in a water supply facility in a cold region and can automatically drain water in a pipe simply by operating a drain plug. The water supply equipment provided with the automatic water drain valve is connected to the water supply main pipe, the water drain plug connected to the primary pipe, and the water drain plug connected to the water heater. A secondary pipe for cold water, a header for cold water connected to the secondary pipe for cold water, a secondary pipe for hot water that connects the water heater and the header for hot water, a header for cold water, and a hot water mixing faucet device It has a water supply pipe to be connected, a hot water supply pipe to connect the hot water header and the hot water mixing faucet device, and between the primary pipe for cold water upstream of the hot water mixing faucet device and the water heater. A first automatic drain valve is provided, and a second automatic drain valve is provided between the cold water header and the hot water header upstream of the hot and cold water mixing device.
However, for example, in the main body of the hot and cold water mixing faucet device with a temperature adjustment function, each of hot water and water supplied from the upstream side is mixed to adjust the temperature of hot water to be discharged, The function part etc. which switch spout water are provided, and each flow path of the hot water and water which flows into such a function part, and the flow path through which the hot water mixed in the function part flows into the spout part are formed in a complicated manner However, since the main body of the hot and cold water mixing device is not provided with an automatic water drain valve, hot water and water are not introduced into the flow channel in the main body of the hot and cold water mixing device. Remains, and it is difficult to completely discharge the remaining water in the main body of the hot and cold water mixing device.
In addition, when draining water in a cold region, there is a problem that the operation becomes complicated when it is performed for a hot and cold water mixing faucet device with a temperature control function.

Next, with reference to FIG. 18, the drainage in the conventional hot and cold water mixing faucet device with a temperature control function will be described.
FIG. 18 is a schematic view showing a conventional hot and cold water mixing device with a temperature control function.
As shown in FIG. 18, a conventional hot and cold water mixing faucet device 500 includes a faucet body 502, a hot water supply leg 504 for supplying hot water from a water heater (not shown) to the faucet body 502, and a faucet. A water supply leg 506 for supplying tap water to the main body 502 is provided. The faucet body 502 is provided with a hot water temperature adjustment dial 508 attached to the left end portion thereof, and a spouting water switching handle 510 attached to the right end portion.
Further, on the downstream side of the faucet body 502, a currant 512 and a shower head 514 for discharging temperature-adjusted hot water are provided.
Further, the faucet body 502 incorporates a switching unit 516 capable of switching between water discharge and water stop from the currant 512 and water discharge and water stop from the shower head 514. The hot water supply leg 504 and the water supply leg The hot water and water supplied to the faucet body 502 from each of the water faucets 506 pass through the hot water passage 502a and the water passage 502b in the faucet body 502, and are set by the hot water temperature adjustment dial 508 in the temperature adjustment unit 518. The water is mixed so that the temperature is adjusted, and the water discharge switch 510 is operated to discharge water from the currant 512, discharge water from the shower head 514, or stop water discharge from both. Can be switched to. Therefore, in the hot and cold water mixing device 500, the temperature adjusting unit 518 is filled with water even in the water stop state, and the supply pressure of hot water and water is applied in the temperature adjusting unit 518.

Furthermore, backflow prevention valves 520a and 520b are respectively provided in the hot water passage 502a and the water passage 502b on the upstream side of the temperature adjustment unit 518. That is, since the hot water passage 502a and the water passage 502b communicate with each other through the temperature adjustment unit 518 even in the water-stopped state, when there is a difference between the hot water supply pressure and the water supply pressure, Therefore, the backflow prevention valves 520a and 520b are provided to prevent the backflow of hot water from the temperature adjusting unit 518 to the hot water passage 502a and the water passage 502b.
Further, in the cold district, when draining such a conventional hot and cold water mixing faucet device 500, the hot water supply leg 504 and the water supply leg 506 provided upstream of the backflow prevention valves 520a and 520b are provided. The drainage cocks 522a and 522b are operated to the drainage side to be opened, the outside air is taken in from the drainage cocks 522a and 522b, and the hot water staying on the upstream side of the backflow prevention valves 520a and 520b. And each of water is discharged.

Japanese Utility Model Publication No. 4-108656 JP 2004-52288 A JP 2003-96835 A

However, in the conventional hot and cold water mixing faucet device 500, the hot water staying in the temperature adjustment unit 518 and the switching unit 516 from the downstream side of the backflow prevention valves 520a and 520b is prevented from flowing into the backflow prevention valves 520a and 520b. Therefore, the drainage cock 524 is provided at any location of the hot water passage 502a or the water passage 502b on the downstream side of the backflow prevention valves 520a and 520b.
Therefore, when draining water from the conventional hot and cold water mixing device 500, the drain cocks 522a and 522b of the hot water supply leg 504 and the water supply leg 506 are operated to the drain side and opened simultaneously. , By operating the spout water switching handle 510 so that the on-off valve 516a of the switching unit 516 is opened and rotating the hot water temperature adjusting dial 508 in communication with the currant 512 or the shower head 514, There is a problem that the water draining operation becomes complicated because an additional work of discharging hot water remaining in the downstream side of the backflow prevention valves 520a and 520b or in the temperature control unit 518 is required.
In addition, if any of the drainage cocks 522a, 522b, and 524 or the stop water switching handle 510 is forgotten, the water remaining in the faucet body freezes and the temperature adjustment unit There is also a problem that 518 and the like may be damaged.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and provides a hot and cold water mixing faucet device that can easily drain water without requiring a complicated operation. It is aimed.

In order to solve the above-described problem, the present invention is a hot-water mixing faucet device that stops hot water mixed with hot water supplied from a hot-water supply source and water supplied from the water-supply source. A faucet body provided with a hot and cold mixing part for mixing supplied hot water and water supplied from a water supply source, and provided in the faucet body, manually opened and closed, and sucked into the faucet body And an intake / drain valve for draining and a manual operation part for manually opening / closing the intake / drain valve, and the intake / drain valve performs a drain operation to stop water supply to the faucet body. Thereafter, the valve is opened by manually operating the manual operation unit, and intake air is supplied to each flow path of hot water and water upstream of the hot water mixing unit, and downstream of the hot water mixing unit. It is configured so that intake or drainage is performed to the hot water flow path It is characterized by a door.
In the present invention configured as described above, after performing the water drain operation to stop the water supply to the faucet body, the manual operation unit is manually operated to open the intake drain valve, Since intake is performed with respect to each flow path of hot water and water upstream of the water, and intake or drainage is performed with respect to the flow path of hot water downstream of the hot water mixing section, complicated operations are required. In addition, water can be easily drained from the faucet body. In addition, it is possible to perform intake and drainage to the faucet body at the same time simply by opening the intake and drainage valve by a single manual operation after the drainage operation. The water inside can be drained.

In the present invention, preferably, further, a hot water inflow portion and a water inflow portion into which hot water and water flow from the upstream side of the hot water mixing portion, hot water inflow from each of the hot water inflow portion and the water inflow portion, and A hot and cold water outflow section for flowing out the temperature-controlled hot water by adjusting the amount of water and mixing, the temperature control function section comprising the hot water inflow section and the water inflow section Is inclined in the faucet body so as to incline downward toward the hot water outflow portion.
In the present invention configured as above, the hot water inflow portion and the water inflow portion into which hot water and water respectively flow from the upstream side of the hot water mixing portion, and the hot water inflow from each of these hot water inflow portion and water inflow portion. And a hot and cold water outflow section for flowing out the temperature-controlled hot water by adjusting and mixing the amount of water, and this temperature control function section comprises the hot water inflow section and the water inflow It is inclined and arranged in the faucet body so as to incline downward from the hot water outflow part. Therefore, after performing the drain operation to stop water supply to the faucet body, if the intake drain valve is opened by manually operating the manual operation section, it is easy to discharge the residual water in the temperature control function section be able to. Therefore, it is possible to prevent water from remaining in the temperature control function unit and freeze it, and to prevent damage to the temperature control function unit due to freezing.

In the present invention, preferably, a shower hose part provided at a tip part with a shower head for discharging hot water mixed in the hot water / water mixing part, and a shower hose connecting the shower hose part and the faucet body. And the shower hose connection portion is located above the lowest position of the drainage portion that is opened and closed by the intake drainage valve.
In the present invention configured as described above, a shower hose portion provided at the tip with a shower head for discharging hot water mixed in the hot water mixing portion, and a shower hose connecting the shower hose portion and the faucet body It has a connection part, and this shower hose connection part is located above the lowest position of the drainage part opened and closed by an intake drainage valve. Therefore, if the intake drainage valve is opened by manually operating the manual operation part after performing the draining operation to stop water supply to the faucet body, the remaining water that has flowed from the shower hose part into the shower hose connection part Water can be reliably drained from the drainage part opened by the intake drainage valve, and water can be prevented from remaining in the shower hose connection part and freezing.

Next, the present invention is a hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source, and the hot water supplied from the hot water supply source passes therethrough. A hot water passage, a water passage through which water supplied from a water supply source passes, a hot water backflow prevention valve provided in the hot water passage to prevent backflow of hot water, and a water passage provided in the water passage. A water backflow prevention valve for preventing backflow, and a hot water backflow prevention valve and a water backflow prevention valve provided on the downstream side of the water supply amount and supplied from the water passage. A water faucet body provided with a temperature adjustment function part that adjusts the temperature of hot water by adjusting and mixing the amount of water, and provided downstream of the water faucet body, It is provided on the downstream side of the faucet body, and the temperature A shower water discharge unit that discharges hot water mixed in the node function unit, and a hot water that is provided on the downstream side of the temperature control function unit of the faucet body and supplies hot water to each of the curan water discharge unit and the shower water discharge unit An open / close valve that opens and closes the mixing path, and is provided in the faucet body, and is provided in the faucet body, which can switch between water discharge and water stop from the currant water discharge unit, water discharge from the shower water discharge unit, and water stop. An intake part capable of inhaling air, a drain part provided in the faucet body, capable of draining residual water in the faucet body, and provided in the intake part and the drain part so as to be manually openable and closable. Intake drainage that allows intake by the intake section and drainage by the drain section by being manually opened after draining operation to stop water supply from the water source to the faucet body Valve and this A manual operation part that manually opens and closes the air drain valve, and the intake part is provided in a first flow path that is the water flow path upstream of the water backflow prevention valve. A second intake portion provided in a second flow path that is the hot water flow path upstream of the hot water backflow prevention valve, the water backflow prevention valve, and the hot water backflow prevention A third intake section provided in a third flow path from each of the valves to the open / close valve; and a fourth intake section provided in a fourth flow path from the open / close valve to the curan spouting section; A fifth intake section provided in a fifth flow path from the on-off valve to the shower water discharge section, and the drain section is a first drain section provided in the third flow path And a second drainage part provided in the fifth flow path.
In the present invention configured as described above, after performing a drain operation to stop water supply from the water supply source to the faucet body, when the intake drain valve is opened by manually operating the manual operation unit, By sucking in the first flow path, which is a water flow path upstream from the water backflow prevention valve, from the first air intake section, the water in the first flow path is drained to the upstream side of the water flow path. The At the same time, the hot water in the second flow path is sucked into the second flow path, which is the hot water flow path upstream from the hot water backflow prevention valve, so that the hot water in the second flow path is It is drained to the upstream side. At the same time, the third intake section sucks air into the third flow path from each of the water backflow prevention valve and the hot water backflow prevention valve to the on-off valve. Hot water and water are drained from the first drainage portion to the outside of the faucet body. At the same time, the fourth intake passage sucks into the fourth passage from the on-off valve to the currant spouting portion, so that hot water in the fourth passage is transferred from the currant spouting portion to the outside of the faucet body. To be drained. Furthermore, at the same time, when the fifth intake passage sucks into the fifth flow path from the on-off valve to the shower water discharger, hot water in the fifth flow path is transferred from the second drainage part to the faucet body. Drained outside. That is, after performing a drain operation to stop water supply from the water supply source to the faucet body, the intake and drain valve is opened by manually operating the manual operation section, and the intake and drain valves are opened. Since drainage can be performed efficiently at the same time, water can be easily drained from the faucet body without requiring a complicated operation. In addition, it is possible to perform intake and drainage to the faucet body at the same time simply by opening the intake and drainage valve by a single manual operation after the drainage operation. The water inside can be drained.

In the present invention, preferably, the third flow path includes a sixth flow path from the water backflow prevention valve to the temperature adjustment function section, and a flow path from the hot water backflow prevention valve to the temperature adjustment function section. A seventh flow path and an eighth flow path from the temperature adjustment function section to the on-off valve, and the third intake section is a sixth intake air provided in the sixth flow path. And a seventh intake section provided in the seventh flow path, wherein the first drainage section includes the third drainage section provided in the sixth flow path, and the seventh drainage section. And a fourth drainage portion provided in the eighth flow path and a fifth drainage portion provided in the eighth flow path.
In the present invention configured as described above, after performing a drain operation to stop water supply from the water supply source to the faucet body, when the intake drain valve is opened by manually operating the manual operation unit, Furthermore, when the sixth intake section sucks air into the sixth flow path from the water backflow prevention valve to the temperature control function section, the water in the sixth flow path is drained from the third drain section. The At the same time, when the seventh intake passage sucks into the seventh flow path from the hot water backflow prevention valve to the temperature adjustment function section, the hot water in the seventh flow path is discharged from the fourth drainage section. Drained. At the same time, when the eighth intake section sucks air into the eighth flow path from the temperature adjustment function section to the on-off valve, the hot water and water in the eighth flow path are discharged into the fifth drainage. Drained from the part. Therefore, it is possible to drain water from the faucet body more efficiently and reliably.

Next, the present invention is a hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source, and the hot water supplied from the hot water supply source passes therethrough. A hot water supply section where water supplied from a water supply source passes, a hot water supplied from the hot water supply path, and a hot water mixing section in which the water supplied from the water flow path is mixed, and the hot water A faucet body provided with a hot and cold water mixing path through which hot water mixed in the mixing section passes, a water discharge section provided on the downstream side of the faucet body, and discharging the hot water passing through the hot water and water mixing path, and It is provided in the faucet body, and can open and close the hot water passage, the water passage and the hot water mixing portion to switch water discharge and water stop from the water discharge portion. Adjust the amount of hot water and water flowing into the hot water mixing section from each. An on-off valve that is provided in the faucet body, and communicates the water passage upstream of the hot water mixing section and the hot water mixing path with the hot water mixing path downstream of the hot water mixing section. The communication portion is provided so as to be openable and closable at the communication portion, and is opened manually after performing a drain operation to stop water supply from the water supply source to the faucet body, thereby opening the communication portion. An intake / drain valve that performs intake and drainage with respect to the faucet body, and a manual operation unit that manually opens and closes the intake / drain valve, and the communication portion extends from the water passage. A first communication part to the intake / drain valve; a second communication part from the hot water passage to the intake / drain valve; a third communication part for communicating the hot water mixing path and the intake / drain valve; , And in the vicinity of the intake / drain valve in the faucet body The drainage part for draining hot water drained from the third communication part to the outside of the faucet body is provided so as to be opened and closed by the intake drain valve, and the third communication part and the drainage part are: When the intake / drain valve is manually opened after the water draining operation is performed, the water is sucked into the hot water mixing path from the water discharge portion, and the first communication is passed from the hot water mixing path through the third communication portion. The hot water in the hot and cold water mixing passage is drained from the drainage part to the outside of the faucet body through the third communication part. It is characterized by that.
In the present invention configured as described above, the water faucet body is provided on the faucet main body and communicates with the water passage on the upstream side of the hot water / water mixing section and the hot water mixing path on the downstream side of the hot water / water mixing section. The communication part is opened and opened at the communication part, and after the draining operation to stop water supply from the water supply source to the faucet body is performed manually, the communication part is opened. Since it has an intake / drain valve that performs intake and drainage into the faucet body and a manual operation unit that manually opens and closes the intake / drain valve, manual operation is performed after draining operation. When the intake / drain valve is opened by manually operating the section, the water is sucked into the hot water mixing path from the water discharge section, and is sucked into the drainage section from the hot water mixing path through the third communication section. Water from the drainage section through the third communication section It is drained to the outside of the body. That is, after performing a drain operation to stop water supply from the water supply source to the faucet body, the intake and drain valves are manually opened to efficiently perform intake and drainage simultaneously on the faucet body. Therefore, water can be easily drained from the faucet body without requiring a complicated operation. Moreover, since the intake and drainage valves can be simultaneously opened and discharged by simply opening the intake and drainage valve after one draining operation, the water in the faucet body can be efficiently used. Can be removed.

Next, the present invention is a hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source, and the hot water supplied from the hot water supply source passes therethrough. A hot water supply section where water supplied from a water supply source passes, a hot water supplied from the hot water supply path, and a hot water mixing section in which the water supplied from the water flow path is mixed, and the hot water A faucet body provided with a hot and cold water mixing path through which hot water mixed in the mixing section passes, a water discharge section provided on the downstream side of the faucet body, and discharging the hot water passing through the hot water and water mixing path, and It is provided in the faucet body, and can open and close the hot water passage, the water passage and the hot water mixing portion to switch water discharge and water stop from the water discharge portion. Adjust the amount of hot water and water flowing into the hot water mixing section from each. An on-off valve that is provided in the faucet body, and communicates the water passage upstream of the hot water mixing section and the hot water mixing path with the hot water mixing path downstream of the hot water mixing section. The communication portion is provided so as to be openable and closable at the communication portion, and is opened manually after performing a drain operation to stop water supply from the water supply source to the faucet body, thereby opening the communication portion. An intake / drain valve that performs intake and drainage with respect to the faucet body, and a manual operation unit that manually opens and closes the intake / drain valve, and the communication portion extends from the water passage. A first communication part to the intake / drain valve; a second communication part from the hot water passage to the intake / drain valve; a third communication part for communicating the hot water mixing path and the intake / drain valve; And after manually performing the above draining operation, When the intake / drain valve is opened, air is sucked into the hot water / mixing passage from the water discharge portion, and from the hot water / water mixing passage to the first communication portion and the second communication portion via the third communication portion. The hot water in the hot and cold mixing passage is sucked and discharged from the first communication portion and the second communication portion to the water passage and the hot water passage through the third communication portion. It is characterized by being configured.
In the present invention configured as described above, the water faucet body is provided on the faucet main body and communicates with the water passage on the upstream side of the hot water / water mixing section and the hot water mixing path on the downstream side of the hot water / water mixing section. The communication part is opened and opened at the communication part, and after the draining operation to stop water supply from the water supply source to the faucet body is performed manually, the communication part is opened. An intake / drain valve that performs intake and drainage into the faucet body and a manual operation unit that manually opens and closes the intake / drain valve, and the communication portion extends from the water passage to the intake / drain valve. A first communication portion, a second communication portion from the hot water passage to the intake / drain valve, and a third communication portion that communicates the hot water / mixture passage with the intake / drain valve. After performing the operation, by manually operating the manual operation section, the intake drain valve When the valve is opened, the water is sucked into the hot water / mixing channel, and is sucked from the hot water / mixing channel through the third communicating portion into the first communicating portion and the second communicating portion. The hot water is drained from the first communication portion and the second communication portion to the water passage and the hot water passage through the third communication portion. That is, after performing a drain operation to stop water supply from the water supply source to the faucet body, the intake and drain valves are manually opened to efficiently perform intake and drainage simultaneously on the faucet body. Therefore, water can be easily drained from the faucet body without requiring a complicated operation. In addition, it is possible to perform intake and drainage to the faucet body at the same time simply by opening the intake and drainage valve by a single manual operation after the drainage operation. The water inside can be drained.

In the present invention, it is preferable that hot water discharged from the third communicating portion is further provided near the intake / drain valve in the faucet body so as to be opened and closed by the intake / drain valve. It has a drainage part that drains to the outside.
In the present invention configured as above, when the intake / drain valve is opened by manually operating the manual operation portion after the drainage operation, the intake air is introduced near the intake / drain valve in the faucet body. Because the drainage part that can be opened and closed by the drainage valve can also drain the hot water drained from the third communicating part to the outside of the faucet body, draining the faucet body more efficiently and reliably It can be performed.

  According to the hot and cold water mixing device of the present invention, water can be easily drained without requiring a complicated operation.

It is the schematic which shows the hot and cold water mixing faucet device by a 1st embodiment of the present invention. It is the perspective view which looked at the hot / cold water mixing faucet device by 1st Embodiment of this invention from diagonally upward and the front. FIG. 3 is a perspective sectional view taken along line III-III in FIG. 2. FIG. 4 is a perspective sectional view taken along line IV-IV in FIG. 2. It is sectional drawing along the VV line of FIG. FIG. 6 is a perspective sectional view taken along line VI-VI in FIG. 2. It is a disassembled perspective view of the faucet body and the intake / drain valve unit of the hot and cold water mixing faucet device according to the first embodiment of the present invention. It is sectional drawing along the VIII-VIII line | wire of FIG. 2, Comprising: It is a partial expanded sectional view which expands and shows partially the intake-drain valve unit of the valve closing state of the hot-water mixing faucet device by 1st Embodiment of this invention. is there. It is the perspective view which looked at the hot / cold water mixing faucet device by 2nd Embodiment of this invention from diagonally back. It is sectional drawing in alignment with the XX line of FIG. 9, It is front sectional drawing containing the front cross-section of the hot water passage and the water passage in the hot-water mixed tap apparatus by 2nd Embodiment of this invention. It is sectional drawing along the XI-XI line | wire of FIG. 10, It is side surface sectional drawing containing the right side surface cross section of the water flow path in the hot water mixed tap apparatus by 2nd Embodiment of this invention. It is sectional drawing along the XII-XII line | wire of FIG. 10, It is a center side sectional view in the hot water-mixing faucet device by 2nd Embodiment of this invention. It is sectional drawing along the XIII-XIII line | wire of FIG. 10, It is a plane sectional view containing the plane cross section of the valve unit in the hot-water mixed tap apparatus by 2nd Embodiment of this invention. It is a disassembled perspective view of the intake / drain valve unit of the hot and cold water mixing faucet device by 2nd Embodiment of this invention. It is a partial expanded sectional view which expands and shows partially the intake-and-drain valve unit of the hot-water-mixing faucet device by 2nd Embodiment of this invention shown in FIG. FIG. 13 is a partially enlarged cross-sectional view showing a partially enlarged intake / drain valve unit of the hot and cold water mixing faucet device according to the second embodiment of the present invention shown in FIG. 12. It is side surface sectional drawing along the right side surface cross section of the water flow path in the hot / cold water mixing faucet apparatus by 3rd Embodiment of this invention. It is the schematic which shows the conventional hot and cold water mixing faucet device with a temperature control function.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIGS. 1-8, the hot / cold water faucet device by 1st Embodiment of this invention is demonstrated.
FIG. 1 is a schematic view showing a hot and cold water mixing device according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing the hot water and water mixing device according to the first embodiment of the present invention. 3 is a perspective sectional view taken along line III-III in FIG. 2, and FIG. 4 is a perspective sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG. 2, and FIG. 6 is a perspective cross-sectional view taken along line VI-VI in FIG.

First, as shown in FIGS. 1 and 2, the hot and cold water mixing apparatus 1 according to the first embodiment of the present invention includes a faucet body 2, and a hot water supply source is provided on the back side of the faucet body 2. A hot water supply leg 4 for supplying hot water from a hot water heater (not shown) and a water supply leg 6 for supplying tap water from a water supply source (not shown) such as water supply to the faucet body 2 are provided. It has been.
The hot water supply leg 4 connects a hot water supply pipe (not shown) provided on the wall surface and the faucet body 2 to supply hot water to the faucet body 2.
Further, the water supply leg 6 connects a water pipe (not shown) provided on the wall surface and the faucet body 2 to supply water to the faucet body 2. In addition, a drain plug (not shown) that is operated when draining the hot and cold water mixing faucet device 1 in a cold district or the like is provided in the flow path on the upstream side of the water supply leg 6. Yes.

Next, as shown in FIG. 1, a water passage 8 through which hot water supplied from the hot water supply leg 4 passes and a water passage through which water supplied from the water supply leg 6 passes are provided in the faucet body 2. 10 are formed.
Moreover, as shown in FIGS. 1-4 and 6, each of the hot water passage 8 and the water passage 10 is provided with a hot water backflow prevention valve 12 and a water backflow prevention valve 14, respectively. The water backflow prevention valve 12 prevents the hot water downstream of the hot water backflow prevention valve 12 from flowing back to the hot water supply leg 4 side, and the water backflow prevention valve 14 causes water downstream of the water backflow prevention valve 14 to flow. Backflow to the water supply leg 6 side can be prevented.

Next, as shown in FIGS. 1 to 3 and 5, on the upstream side of the water passage 8 and the water passage 10 in the faucet body 2, the amount of hot water supplied from the water passage 8 and the water passage There is provided a thermo unit 16 that is a hot and cold mixing unit that adjusts and mixes the amount of water supplied from 10 and a temperature adjustment function unit that adjusts the temperature of the mixed hot and cold water.
As shown in FIGS. 1 and 2, a currant 18 and a shower head 20 for discharging hot water whose temperature is adjusted by the thermo unit 16 are provided on the downstream side of the faucet body 2, respectively.

Further, as shown in FIGS. 1 to 3 and 5, on the downstream side of the thermo unit 16 in the faucet body 2, water discharge and water stop from the currant 18 and water discharge and water stop from the shower head 20 are provided. There is provided a switching unit 22 which is a switching unit capable of switching between the two. The switching unit 22 includes a switching valve 26 that is an on-off valve that opens and closes a hot and cold mixing path 24 through which hot water mixed in the thermo unit 16 and temperature-controlled passes. The water discharge from the shower head and the water stop, and the water discharge from the shower head 20 and the water stop can be switched.
As shown in FIGS. 1 to 5, an attached hot water temperature adjustment dial 28 is provided at the left end portion of the thermo unit 16 when viewed from the front side of the faucet body 2. At the right end portion of the switching unit 22 as viewed from the front side, a spouting water switching handle 30 is provided.

The hot water temperature adjusting dial 28 operates the thermo unit 16 built in the faucet body 2 by turning the dial 28 and can change the temperature of the hot water adjusted by the thermo unit 16. .
The spouting water switching handle 30 is rotated to switch the switching valve 26 built in the switching unit 22 so that the water stopping state, the water discharging state from the currant 18, and the water discharging state from the shower head 20 are switched. It is like that.
Further, when the stop water switching handle 30 is rotated to the side of the currant, hot water mixed at an appropriate temperature by the thermo unit 16 is discharged from the currant 18, and when the stop water switching handle 30 is rotated to the side of the shower, the appropriate temperature is reached. The hot and cold water mixed in is discharged from the shower head 20.

Further, as shown in FIGS. 1 to 3, an intake / drain valve unit 34 (details will be described later) provided with an intake / drain valve body 32 that is manually opened and closed is provided on the back side of the faucet body 2. Yes.
When a drain plug (not shown) on the upstream side of the water supply leg 6 is operated to the drain side, water supply from the water supply source (not shown) to the faucet body 2 is stopped, and then the intake drain valve When the intake / drain valve main body 32 is opened by manually operating the manual operation member 58 of the unit 34, a plurality of components in the faucet body 2 are opened from an intake portion I (details will be described later) opened by the intake / drain valve unit 34. Drainage portion O (details will be described later) in which outside air is sucked into the flow passages and hot water and / or water in the plurality of flow passages in the faucet body 2 are opened by the intake drain valve unit 34. ) Is drained to the outside of the faucet body 2.
In addition, although this embodiment demonstrates manual operation in which a user operates the manual operation member 58 with fingers etc., it is not restricted to such manual operation.
That is, hereinafter, the description of “manual operation” used in the description of all the embodiments of the present invention means an operation triggered by the intention of a person such as a user, and the user uses a finger or the like. In addition to the operation of operating the manual operation member 58, for example, the user receives a signal transmitted by operating a switch of the remote controller with a finger or the like, and the motor or the like drives the intake / drain valve body 32. This includes operations such as opening and closing.

Next, referring to FIG. 1 to FIG. 8, the intake / drain valve unit in the hot / cold water mixing faucet device of the present embodiment, the intake portion sucked by the intake / drain valve unit, and the drainage discharged by the intake / drain valve unit Details of the unit will be described.
FIG. 7 is an exploded perspective view of the faucet body and intake / drain valve unit of the hot and cold water mixing faucet device according to the first embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 3 is a partially enlarged cross-sectional view showing a partially enlarged intake / drain valve unit in the valve closing state of the hot and cold water mixing faucet device according to the first embodiment of the present invention.

First, as shown in FIGS. 7 and 8, the intake / drain valve body 32 of the intake / drain valve unit 34 is formed in an intake / drain valve unit mounting portion A provided on the back side of the faucet body 2. A valve body 56 that opens and closes simultaneously with respect to the six communication ports (intake ports) 36, 38, 40, 42, 44, 46 of I and the four communication ports (drain ports) 48, 50, 52, 54 of the drainage portion O. It has.
The intake / drain valve unit 34 includes a manual operation member 58 that is fixed to the back side of the valve body 56 and manually opens and closes the valve body 56.
In addition, in the valve body 56 shown in FIG. 8, the valve body 56 of the valve closing state which the front surface 56a of the valve body 56 contact | abutted to the back surface (seat surface) 60 of the faucet main body 2 is shown.
Further, the manual operation member 58 is fixed to the back surface of the valve body 56 and holds the valve body 56, and extends a predetermined length from the center of the back surface of the valve body holding portion 58a to the rear side. The formed rotating shaft portion 58b and a knob portion 58c fixed to the rear end surface of the rotating shaft portion 58b are provided. A male screw 58d is formed on the outer peripheral surface of the rotation shaft portion 58b.

Further, as shown in FIGS. 7 and 8, the intake / drain valve unit 34 includes a holding member 62 that is attached to the back side of the valve body 56 and holds the valve body 56 and the manual operation member 58. The holding member 62 is fixed to the back surface 60 of the faucet body 2 facing the holding member 62 with bolts 64.
Further, as shown in FIG. 8, the holding member 62 is formed with a female screw hole 62a penetrating in the front-rear direction. It is screwed with a male screw 58d of the moving shaft portion 58b. When the user pinches the knob 58c of the manual operation member 58 with his / her finger and rotates it around the central axis L1 in the longitudinal direction of the manual operation member 58, the rotation shaft 58b of the manual operation member 58 rotates and is manually operated. When the operation member 58 slides in the front-rear direction with respect to the holding member 62, the valve body 56 fixed to the valve body holding portion 58a of the manual operation member 58 can be moved in the front-rear direction to open and close. It has become.

Further, as shown in FIG. 8, an operation chamber 66 is formed on the front side of the holding member 62 so that the valve body holding portion 58a of the manual operation member 58 can slide in the front-rear direction.
When the valve body 56 is slid backward by rotating the knob portion 58c of the manual operation member 58 around the longitudinal central axis L1, the back surface 58e of the valve body holding portion 58a of the manual operation member 58 is The manual operation member 58 can rotate about the central axis L1 and can slide back along the central axis L1 until it contacts the depth surface 66a in the working chamber 66 corresponding to the front-rear direction. ing.
On the other hand, when the valve body 56 is slid forward by rotating the knob portion 58c of the manual operation member 58 around the central axis L1 in the longitudinal direction, the front surface (seal surface) 56a of the valve body 56 is an intake / drain valve. The manual operation member 58 can rotate around the central axis L1 and slides forward along the central axis L1 until it abuts on the back surface (sheet surface) 60 of the faucet body 2 of the unit mounting portion A. It is possible.

  8 indicates the position of the front surface 56a of the valve body 56 in the most opened state. When the valve body 56 is opened, the front surface 56a of the valve body 56 and the faucet body 2 are indicated. 6 between the back surface (seat surface) 60 of the water faucet body 2 shown in FIG. 7, the six communication ports (inlet ports) 36, 38, 40, 42, 44, 46 and the drainage A communication chamber S1 communicating with each of the four communication ports (drain ports) 48, 50, 52, and 54 of the portion O is formed.

  Next, as shown in FIGS. 1, 4, and 6, in the faucet body 2, a water passage 10 a upstream of the water backflow prevention valve 14 and a communication port 36 on the back surface of the faucet body 2 are provided. A communication passage 68 is provided as a part of the intake portion I that is sucked in by the intake / drain valve unit 34, and is connected to the upstream side of the water backflow prevention valve 14 of the faucet body 2 from the water supply leg 6. A part of the water supplied to the water channel 10 a passes through the communication path 68.

Next, as shown in FIGS. 4, 7, and 8, a vent hole 62 b that penetrates the holding member 62 in the front-rear direction is provided in the vicinity of the upper side of the valve body 56 in the intake / drain valve unit mounting portion A of the faucet body 2. A communicating path (intake path) 74 that communicates is formed as a part of the intake portion I that is inhaled by the intake / drain valve unit 34. In a state where the valve body 56 of the intake / drain valve unit 34 is open, the communication chamber S1 on the front side of the valve body 56 and the water are connected via the communication path (intake path) 74 and the vent hole 62b of the holding member 62. The outside of the plug body 2 communicates with the outside.
Further, as shown in FIGS. 4, 7, and 8, in the vicinity of the lower side of the valve body 56, the communication on the front side of the valve body 56 with the valve body 56 of the intake / drain valve unit 34 opened. Three communication passages (drainage passages) 76, 78, and 80 that connect the chamber S <b> 1 and the outside of the faucet body 2 are formed as a part of the drainage portion O that is drained by the intake drainage valve unit 34.

Moreover, as shown in FIG.7 and FIG.8, the drain plug (not shown) of the upstream of the water supply leg 6 was operated to the drain side, and the water supply from a water supply source (not shown) was stopped. Thereafter, when the manual operation member 58 of the intake / drain valve unit 34 is manually rotated around the central axis L1 and the valve body 56 of the intake / drain valve body 32 is opened, each of the six back surfaces 60 of the faucet body 2 is opened. The communication ports (intake ports) 36, 38, 40, 42, 44, and 46 and the four communication ports (drain ports) 48, 50, 52, and 54 are opened simultaneously. At this time, the water pressure in the flow path on the upstream side of the water supply leg 6 decreases, and a negative pressure is generated when the water pressure becomes equal to or lower than the atmospheric pressure. The negative pressure causes the water backflow prevention valve 14 of the faucet body 2 to In addition, the water in the upstream water passage 10 a is discharged to the upstream side of the water supply leg 6 through the water supply leg 6.
Further, since the pressure in the flow path on the upstream side of the faucet body 2 is equal to or lower than the atmospheric pressure, the communication chamber on the front side of the valve body 56 from the communication path (intake passage) 74 near the upper side of the valve body 56 and the like. After the outside air is sucked into S1, the faucet body from each of the six communication ports (intake ports) 36, 38, 40, 42, 44, 46 of the suction portion I on the back surface 60 of the faucet body 2 from the communication chamber S1. 2 is sucked into the interior. Thereby, after the residual water in the faucet body 2 is drained into the communication chamber S1 from the four communication ports (drainage ports) 48, 50, 52, 54 of the exhaust part O of the back surface 60, the communication chamber S1 and The water is drained to the outside of the faucet body 2 from the communication passages (drainage channels) 76, 78, 80, etc. near the lower side of the valve body 56.

Next, referring to FIGS. 1, 3, 4, and 6 to 8, the intake portion I sucked by the intake drain valve unit 34 and the drain portion O drained by the intake drain valve unit 34 are described. Details will be described.
First, as shown in FIGS. 1, 3, 4, 6, and 7, the communication port 36 of the intake portion I is a water passage 10 a upstream of the water backflow prevention valve 14 in the faucet body 2. And a communication passage (intake passage) 68.
After the drain plug (not shown) on the upstream side of the water supply leg 6 is operated to the drain side, the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58. The communication port 36 becomes the first intake port 36, and air is sucked from the first intake port 36 through the communication path (intake path) 68 to the water path 10 a upstream of the water backflow prevention valve 14. Water in the water flow path 10 a upstream of the water backflow prevention valve 14 and the water supply leg 6 is drained to the upstream side of the water supply leg 6.

Next, as shown in FIG. 1, FIG. 3, FIG. 4 and FIG. 7, the second intake port 38 of the intake portion I is hot water passing upstream of the hot water backflow prevention valve 12 in the faucet body 2. It communicates with the path 8a via a communication path (intake path) 82.
When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the drain operation to stop water supply to the faucet body 2, the second intake port 38 Via the communication passage (intake passage) 82, air is sucked into the hot water passage 8 a upstream of the hot water backflow prevention valve 12, and the hot water passage 8 a and the hot water supply leg 4 upstream of the hot water backflow prevention valve 12. The hot water inside is drained to the upstream side of the hot water supply leg 4.

Next, as shown in FIG. 1, FIG. 3, FIG. 4, FIG. 6 and FIG. 7, the third air inlet 40 of the air inlet I is connected to the thermo unit 16 from the water backflow prevention valve 14 in the faucet body 2. Is communicated with the water passage 10b through the communication passage (intake passage) 84.
On the other hand, the first drain port 48 of the drainage section O communicates with the water passage 10 b from the water backflow prevention valve 14 to the thermo unit 16 in the faucet body 2 through a communication passage (drainage passage) 86. .
When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the draining operation to stop the water supply to the faucet body 2, the third intake port 40 Air is drawn into the water passage 10 b from the water backflow prevention valve 14 to the thermo unit 16 through the communication passage (intake passage) 84.
At the same time, the remaining water in the water flow path 10b from the water backflow prevention valve 14 to the thermo unit 16 passes through the communication path (drainage path) 86 and is downward from the first drainage port 48 as shown in FIGS. Are discharged to the outside of the faucet body 2 from the communication passages (drainage channels) 76, 78, 80.

Next, as shown in FIGS. 1, 3, 4, 6, and 7, the fourth intake port 42 of the intake portion I is connected to the thermo unit 16 from the hot water backflow prevention valve 12 in the faucet body 2. To the hot water passage 8b through the communication passage (intake passage) 88.
On the other hand, the second drainage port 50 of the drainage part O communicates with the hot water passage 8b from the hot water backflow prevention valve 12 in the faucet body 2 to the thermo unit 16 via a communication passage (drainage passage) 90. Yes.
When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the drain operation to stop the water supply to the faucet body 2, the fourth intake port 42 Air is drawn into the hot water passage 8 b from the hot water backflow prevention valve 12 to the thermo unit 16 through the communication path 88.
At the same time, remaining hot water in the hot water passage 8b from the hot water backflow prevention valve 12 to the thermo unit 16 passes through the communication passage (drainage passage) 90 from the second drainage port 50 as shown in FIGS. The water is discharged to the lower communication passages (drainage channels) 76, 78, and 80, and drained from the communication passages (drainage channels) 76, 78, and 80 to the outside of the faucet body 2.

Next, as shown in FIGS. 1 and 5, the thermo unit 16 has a hot water inflow portion 16 a into which hot water in the hot water passage 8 b on the upstream side flows in, and water in the water flow passage 10 b on the upstream side in the thermo unit 16. An inflowing water inflow portion 16b and a hot and cold water outflow portion 16c for allowing hot water and water to flow out from the hot water inflow portion 16a and the water inflow portion 16b by adjusting and mixing the amounts of hot water and water flowing out of the hot water inflow portion 16b and the water inflow portion 16b are provided. It is inclined and arranged in the faucet body 2 so as to incline downward from the hot water inflow portion 16a and the water inflow portion 16b toward the hot water outflow portion 16c.
As shown in FIGS. 1, 4, 6, and 7, the third drain port 52 of the drainage portion O is connected to the hot water inflow portion 16 a of the thermo unit 16 through the communication path (drainage channel) 92. The hot water / water mixing path 24 communicates from each of the water inflow portions 16b to the switching valve 26 of the switching unit 22.
When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the draining operation to stop the water supply to the faucet body 2, the third intake port 40 While being sucked into the water flow path 10b from the water backflow prevention valve 14 to the thermo unit 16 via the communication path (intake path) 84, the hot water backflow prevention valve 12 is communicated from the fourth intake port 42 via the communication path 88. From the hot water inflow portion 16a and the water inflow portion 16b of the thermo unit 16 into the thermo unit 16 and then into the thermo unit 16. It flows into the hot and cold water mixing path 24 up to the switching valve 26.
At the same time, the hot water remaining in the hot water mixing path 24 from each of the hot water inflow part 16 a and the water inflow part 16 b of the thermo unit 16 to the switching valve 26 of the switching unit 22 passes through the communication path (drainage path) 92 to the third. The drainage port 52 is discharged into the lower communication passages (drainage channels) 76, 78, 80, and is drained from the communication passages (drainage channels) 76, 78, 80 to the outside of the faucet body 2. .

Next, as shown in FIGS. 1, 3, 4, and 7, the fifth intake port 44 of the intake section I communicates with the flow path 94 from the switching valve 26 of the switching unit 22 to the currant 18 ( It communicates via an intake passage 96.
When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the draining operation to stop the water supply to the faucet body 2, The air is sucked into the flow path 94 from the switching valve 26 of the switching unit 22 to the currant 18 via the communication path (intake path) 96.
At the same time, hot water left in the flow path 94 from the switching valve 26 of the switching unit 22 to the currant 18 is drained from the currant 18 to the outside of the faucet body 2.

Next, as shown in FIG. 6, in the faucet body 2, a shower hose provided with a shower head 20 at the front end is provided at the rear right side and the lower right end of the discharge water switching handle 30 when viewed from the front side. A connecting member 98 for connecting 20a is attached.
In addition, as shown in FIGS. 1, 3, 4, 6, and 7, the sixth intake port 46 of the intake section I extends from the switching valve 26 of the switching unit 22 to the shower head 20 via the connecting member 98. The flow path 100 and the communication path (intake path) 102 communicate with each other.
On the other hand, the fourth drain port 54 of the drainage section O communicates with the flow path 100 from the switching valve 26 of the switching unit 22 through the connection member 98 to the shower head 20 via a communication path (drainage path) 104. Yes.
Furthermore, as shown in FIG. 6, the flow path 100 formed inside the shower hose connection member 98 is located above the fourth drain port 54 and the communication path (drainage channel) 104 of the drainage portion O. It is located above the lowest position of the drainage part O.

As shown in FIGS. 1, 3, 4, 6, and 7, when the water outlet (not shown) of the shower head 20 is positioned above the faucet body 2, the faucet body When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the water drain operation to stop water supply to the water outlet 2, the water outlet (not shown) of the shower head 20 is not shown. ) From the sixth intake port 46 through the communication path (intake path) 102 to the flow path 100 from the switching valve 26 of the switching unit 22 to the shower head 20. It is like that.
At the same time, the hot water remaining in the flow path 100 from the switching valve 26 of the switching unit 22 to the shower head 20 passes through the communication path (drainage path) 104 and extends downward from the fourth drainage port 54 (drainage path). The water is discharged to 76, 78, and 80, and drained from the communication passages (drainage channels) 76, 78, and 80 to the outside of the faucet body 2.
On the other hand, when the water outlet (not shown) of the shower head 20 is located below the faucet body 2, manual operation is performed after performing a draining operation to stop water supply to the faucet body 2. When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the operation member 58, the shower from the switching valve 26 of the switching unit 22 through the communication path (intake path) 102 from the sixth intake port 46 is performed. Air is sucked into the flow path 100 up to the head 20.
At the same time, the hot water remaining in the flow path 100 from the switching valve 26 of the switching unit 22 to the shower head 20 passes through the communication path (drainage path) 104 and extends downward from the fourth drainage port 54 (drainage path). The water is discharged to 76, 78, and 80, and drained from the communication passages (drainage channels) 76, 78, and 80 to the outside of the faucet body 2. At this time, in a state where the water outlet (not shown) of the shower head 20 is placed on the floor or in a state where the water outlet is placed downward, the remaining water is also drained from the water outlet (not shown) of the shower head 20. Yes.

In the present embodiment, the water flow path 10b from the water backflow prevention valve 14 to the thermo unit 16 and the hot water inflow portion 16a and the water inflow portion 16b of the thermo unit 16 to the switching valve 26 of the switching unit 22 are provided. The hot water mixing path 24 is structurally connected to each other, from the hot water flow path 8b from the hot water backflow prevention valve 12 to the thermo unit 16, and from the hot water inflow part 16a and the water inflow part 16b of the thermo unit 16, respectively. Since the hot water / mixing passage 24 to the switching valve 26 of the switching unit 22 is also structurally connected to each other, a third passage for sucking the water passage 10b from the water backflow prevention valve 14 to the thermo unit 16 is used. When the intake port 40 and the communication passage (intake passage) 84 are omitted, or the hot water passage 8b from the hot water backflow prevention valve 12 to the thermo unit 16 is sucked. Even when the fourth intake port 42 and the communication passage (intake passage) 88 are omitted, the hot water inflow portion 16a and the water inflow portion 16b of the thermo unit 16 to the switching valve 26 of the switching unit 22 are provided. Therefore, either the third intake port 40 and the communication path (intake path) 84 or the fourth intake port 42 and the communication path (intake path) 88 can be used. Either of them may be omitted.
Further, a water flow path 10b from the water backflow prevention valve 14 to the thermo unit 16 and a hot water inflow section 16a of the thermo unit 16 and a hot water mixing path 24 from each of the water inflow section 16b to the switching valve 26 of the switching unit 22 are provided. The hot water flow path 8b from the hot water backflow prevention valve 12 to the thermo unit 16 and the hot water inlet portion 16a and the hot water inlet portion 16b of the thermo unit 16 are connected to each other. The hot and cold mixing channels 24 up to 26 are also in structural communication with each other. Therefore, at least the first drainage port 48 and the communication passage (drainage channel) 86 for draining the remaining water in the water passage 10b from the water backflow prevention valve 14 to the thermo unit 16 are provided, or hot water The second drain 50 and the communication passage (drainage) 90 for draining the remaining hot water in the hot water passage 8b from the backflow prevention valve 12 to the thermo unit 16 are provided at least, or the thermo unit 16 A third drainage port 52 and a communication passage (drainage channel) for draining hot water left in the hot water / mixing channel 24 from the hot water inlet 16a and the water inlet 16b to the switching valve 26 of the switching unit 22 92 should just be provided at least.

According to the hot and cold water mixing faucet device 1 according to the first embodiment of the present invention described above, the drain plug (not shown) on the upstream side of the water supply leg 6 is operated to the drain side to supply a water supply source (not shown). When the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after the water supply from) is stopped, each of the six communication portions of the intake portion I on the back surface 60 of the faucet body 2 is opened. The four communication ports (drain ports) 48, 50, 52, and 54 of the ports (inlet ports) 36, 38, 40, 42, 44, and 46 and the drainage portion O are simultaneously opened.
At this time, in the flow path on the upstream side of the water supply leg 6, the water pressure decreases, and a negative pressure is generated when the water pressure becomes equal to or lower than the atmospheric pressure. The water in the water flow path 10 on the upstream side is discharged to the upstream side of the water supply leg 6 through the water supply leg 6.
At the same time, outside air is sucked into the communication chamber S1 on the front side of the valve body 56 from the communication passage (intake passage) 74 near the upper side of the valve body 56, and then the intake air on the back surface 60 of the faucet body 2 from the communication chamber S1. The remaining water in the faucet body 2 is drained from the back surface 60 by being sucked into the faucet body 2 from the six communication ports (inlet ports) 36, 38, 40, 42, 44, 46 of the part I. After draining into the communication chamber S1 from each of the four communication ports (drain ports) 48, 50, 52, 54 of O, communication passages (drainage channels) 76, 78 near the lower side of the communication chamber S1 and the valve body 56. , 80 etc., drained to the outside of the faucet body 2.

More specifically, when the valve body 56 of the intake / drain valve unit 34 is opened by manually operating the manual operation member 58 after performing the draining operation in which the water supply to the faucet body 2 is stopped, The first intake port 36 sucks air into the water flow path 10a upstream of the water backflow prevention valve 14 via the communication path (intake path) 68, and the water flow path 10a upstream of the water backflow prevention valve 14. And the water in the water supply leg 6 is drained to the upstream side of the water supply leg 6.
At the same time, air is sucked into the hot water passage 8 a upstream of the hot water backflow prevention valve 12 from the second air intake 38 via the communication passage (intake passage) 82, and upstream of the hot water backflow prevention valve 12. Hot water in the hot water passage 8 a and the hot water supply leg 4 is drained to the upstream side of the hot water supply leg 4.
Furthermore, at the same time, air is sucked into the water flow path 10b from the water backflow prevention valve 14 to the thermo unit 16 through the communication path (intake path) 84 from the third intake port 40, and thus from the water backflow prevention valve 14 As shown in FIGS. 4 and 6, the remaining water in the water passage 10 b up to the thermo unit 16 passes through the communication passage (drainage channel) 86 and communicates with the lower communication passage (drainage channel) 76 from the first drainage port 48. It is discharged to 78 and 80 and drained from the communication passages (drainage channels) 76, 78 and 80 to the outside of the faucet body 2.
At the same time, air is drawn into the hot water passage 8b from the hot water backflow prevention valve 12 to the thermo unit 16 through the communication passage 88 from the fourth air inlet 42, so that the thermo unit 16 4 and 6, the remaining hot water in the hot water passage 8b passes through the communication passage (drainage passage) 90 and the communication passages (drainage passages) 76, 78 below the second drainage port 50. Then, the water is discharged to the outside of the faucet body 2 through the communication passages (drainage channels) 76, 78, and 80.
At the same time, the outside air sucked into the water passage 10b from the water backflow prevention valve 14 to the thermo unit 16 through the communication passage (intake passage) 84 from the third intake port 40 and the fourth intake port 42 Outside air sucked into the hot water passage 8b from the hot water backflow prevention valve 12 to the thermo unit 16 through the communication path 88 enters the thermo unit 16 from each of the hot water inflow portion 16a and the water inflow portion 16b of the thermo unit 16. After flowing in, the hot water flowing into the hot water / mixing path 24 to the switching valve 26 of the switching unit 22 and remaining in the hot / water mixing path 24 to the switching valve 26 of the switching unit 22 passes through the communication path (drainage path) 92. Then, the water is discharged from the third drain port 52 to the lower communication passages (drainage channels) 76, 78, 80, and is drained from the communication passages (drainage channels) 76, 78, 80 to the outside of the faucet body 2.
At the same time, the switching valve of the switching unit 22 is sucked into the flow path 94 from the switching valve 26 of the switching unit 22 to the currant 18 through the communication path (intake path) 96 from the fifth intake port 44. The hot water remaining in the flow path 94 from 26 to the currant 18 is drained from the currant 18 to the outside of the faucet body 2.
Furthermore, at the same time, when the water outlet (not shown) of the shower head 20 is positioned above the faucet body 2, the air is sucked into the channel 100 from the water outlet (not shown) of the shower head 20. In addition, the switching unit 22 is switched by being sucked into the flow path 100 from the switching valve 26 of the switching unit 22 to the shower head 20 via the communication path (intake path) 102 from the sixth intake port 46. Hot water left in the flow path 100 from the valve 26 to the shower head 20 is discharged from the fourth drainage port 54 to the lower communication paths (drainage paths) 76, 78, 80 through the communication path (drainage path) 104. Then, the water is discharged from the communication passages (drainage channels) 76, 78, and 80 to the outside of the faucet body 2.
On the other hand, when the water outlet (not shown) of the shower head 20 is located below the faucet body 2, the switching unit is connected from the sixth air inlet 46 via the communication passage (intake passage) 102. The hot water remaining in the flow path 100 from the switching valve 26 of the switching unit 22 to the shower head 20 is sucked into the flow path 100 from the switching valve 26 of the switch 22 to the shower head 20, and the communication path (drainage channel) ) Is discharged from the fourth drainage port 54 to the lower communication passages (drainage channels) 76, 78, 80 via 104, and drained from the communication passages (drainage channels) 78 to the outside of the faucet body 2. At this time, in a state where the water outlet (not shown) of the shower head 20 is placed on the floor or in a state where the water outlet is arranged downward, the remaining water is also discharged from the water outlet (not shown) of the shower head 20.
As a result, the intake drain valve unit 34 is manually operated by manually operating the manual operation member 58 of the intake drain valve unit 34 after the drain plug (not shown) on the upstream side of the water supply leg 6 is operated to the drain side. By simply opening the valve body 56, intake and drainage can be efficiently performed on the faucet body 2 simultaneously. Therefore, water can be easily drained from the faucet body 2 without requiring a complicated operation. In addition, since the valve body 56 of the intake / drain valve unit 34 is opened by one manual operation after the water draining operation is performed, intake and drainage are simultaneously performed on the faucet body 2. It is possible to drain the water from the faucet body 2 with certainty.

  Furthermore, according to the hot and cold water mixing faucet device 1 according to the present embodiment, the intake ports 36, 38, 40, 42, 44, 46 of the intake portion I that are opened and closed by the intake / drain valve body 32 of the intake / drain valve unit 34, Since the drain ports 48, 50, 52, 54 of the drainage part O are provided in the faucet body 2 itself, the water supply leg and the hot water supply leg used in general places other than the cold region, and these For the water faucet body for general land connected to the water, the water supply leg and the hot water supply leg used in the general ground are used as they are, and only the water faucet body for general ground is used as the hot water / water mixing faucet of this embodiment. By simply replacing the faucet body 2 of the device 1, it is possible to cope with cold regions and is easy to use.

  Furthermore, according to the hot and cold water mixing faucet device 1 according to the present embodiment, the thermo unit 16 is placed in the faucet body 2 so as to incline downward from the hot water inflow portion 16a and the water inflow portion 16b toward the hot water outflow portion 16c. It is arranged at an angle. Therefore, after performing the draining operation to stop the water supply to the faucet body 2, when the intake drain valve body 32 is opened by manually operating the manual operation member 58, the remaining water in the thermo unit 16 is removed. It can be made easy to discharge from the hot water outflow part 16c. Therefore, it is possible to prevent water from remaining in the thermo unit 16 and freeze it, and damage to the thermo unit 16 due to freezing can be prevented.

  In addition, according to the hot and cold water mixing faucet device 1 according to the present embodiment, the flow path 100 formed in the shower hose connection member 98 includes the fourth drainage port 54 and the communication path (drainage path) of the drainage portion O. It is located above 104 and is located above the lowest position of the drainage part O. Therefore, if the intake drainage valve body 32 is opened by manually operating the manual operation member 58 after performing the draining operation to stop water supply to the faucet body 2, the inside of the flow path 100 of the shower hose 20a The fourth drain port 54 of the drainage portion O opened by the valve body 56 of the intake drainage valve main body 32 through the communication passage (drainage channel) 104 through the residual water flowing into the flow path 100 of the shower hose connection member 98 from Therefore, it is possible to prevent the water from remaining in the flow path 100 of the shower hose connection member 98 and freezing.

  In addition, in this embodiment, although the form which drains the water inside the faucet main body 2 directly to the exterior of the faucet main body 2 through the communicating path (drainage channel) 76,78,80 was demonstrated, the communicating path (Drainage channels) 76, 78, and 80 may be connected to the water discharge portion of the currant 18 and / or the shower head 20 so that the water is indirectly discharged to the outside of the faucet body 2 through these water discharge portions.

Next, with reference to FIGS. 9 to 16, a hot and cold water mixing faucet device according to a second embodiment of the present invention will be described.
First, FIG. 9 is a perspective view of the hot and cold water mixing faucet device according to the second embodiment of the present invention viewed obliquely from the rear.
As shown in FIG. 10, a hot and cold water mixing apparatus 200 according to the second embodiment of the present invention mixes hot water supplied from a hot water supply source (not shown) and water supplied from a water supply source (not shown). Then, by operating the single operation handle 202, hot water adjusted in the flow rate and temperature of hot water can be discharged from the water outlet 206 at the tip of the spout 204, so-called single lever type hot water mixed water. It is a stopper device.

That is, the hot and cold water mixing apparatus 200 according to the present embodiment includes a faucet body 208 disposed on a counter B of a kitchen sink or a wash basin, and an operation handle 202 provided on the upper part of the faucet body 208. ing.
The operation handle 202 can be rotated to a predetermined rotation angle θ (hereinafter referred to as “flow adjustment operation angle θ”) in a vertical plane around a predetermined operation axis A1 extending horizontally and horizontally with respect to the faucet body 208. The hot water mixing faucet device 200 can be controlled to adjust the discharged water flow rate from the water stop state to the maximum water discharge state according to the flow adjustment operation angle θ.
Further, the operation handle 202 is rotated at a predetermined rotation angle φ (hereinafter referred to as “temperature adjustment operation angle φ”) in a horizontal plane around a predetermined operation axis A2 extending in the vertical direction with respect to the faucet body 208. It is possible to adjust the temperature of hot water discharged from the water outlet 206 of the spout 204 of the hot and cold water mixing device 200 according to the temperature adjustment operation angle φ.

That is, when the operation handle 202 is turned upward (in the “open” direction shown in FIG. 9) at a predetermined flow adjustment operation angle θ around a predetermined operation axis A <b> 1, The amount of hot water discharged from the water outlet 206 of the spout 204 increases as the flow adjustment angle θ for turning the operation handle 202 is set larger. It is set up.
On the other hand, for example, when the operation handle 202 is rotated downward (in the “closed” direction shown in FIG. 9) so that the flow adjustment operation angle θ is 0 °, the spout 204 is discharged from the water discharge port 206. The hot water to be used is set to a still water stop state.

Further, when the operation handle 202 is rotated around the predetermined operation axis A2 at the predetermined temperature adjustment operation angle φ in the direction of “C” shown in FIG. 9, the temperature adjustment operation angle φ is large. The temperature of the hot water discharged from the spout 206 of the spout 204 is set to a lower temperature.
On the other hand, when the operation handle 202 is rotated around a predetermined operation axis A2 at a predetermined temperature adjustment operation angle φ in the direction of “H” shown in FIG. 9, the temperature adjustment operation angle φ is large. The temperature of hot water discharged from the spout 206 of the spout 204 is set to a higher temperature side.

Next, as shown in FIGS. 9 and 10, below the faucet body 208, a water supply pipe that supplies water supplied from a water supply source (not shown) such as a water pipe into the faucet body 208. 210 and a hot water supply pipe 212 for supplying hot water from a hot water heater (not shown) which is a hot water supply source are provided.
In addition, a drain plug (not shown) that is operated when draining water from the hot and cold water mixing apparatus 200 in a cold district or the like is provided in the flow path upstream of the water supply pipe 210. .
Further, on the back side of the faucet body 208, there are an intake / drain valve unit 216 (details will be described later) having an intake / drain valve body 214 that is manually opened and closed, and an intake / drain valve body 214 of the intake / drain valve unit 216. A communication portion C (details will be described later) that enables intake and drainage by opening the valve, and a drainage portion D (details) that allows drainage by opening the intake / drain valve body 214 of the intake / drain valve unit 216 Is provided later).

After a drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the water drain side and water supply from the water supply pipe 210 to the water passage 218 of the faucet body 208 is stopped, the manual operation member 242 is manually operated. When the intake / drain valve body 214 of the intake / drain valve unit 216 is opened by operating, outside air is sucked into a flow passage in the faucet body 208, which will be described in detail later, from the water outlet 206 of the spout 204, and then communicated. Part C is also inhaled.
Accordingly, the hot water and / or water in the communication part C is drained to the upstream side of each of the water supply pipe 210 and the hot water supply pipe 212, and the drainage part D opened by an intake / drain valve unit 214 described later in detail. The water is drained from the faucet body 208 to the outside.

Next, the internal structure of the faucet body of the hot and cold water mixing faucet device of this embodiment will be described with reference to FIGS.
FIG. 10 is a cross-sectional view taken along line XX of FIG. 9, and is a front cross-sectional view including a hot water passage and a front cross section of the water flow passage in the hot and cold water mixing device according to the second embodiment of the present invention.
Moreover, FIG. 11 is sectional drawing along the XI-XI line of FIG. 10, and is side sectional drawing containing the right side surface cross section of the water flow path in the hot water mixing faucet apparatus by 2nd Embodiment of this invention.
Further, FIG. 12 is a cross-sectional view taken along line XII-XII of FIG. 10, and is a central side cross-sectional view of the hot and cold water mixing faucet device according to the second embodiment of the present invention.
FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 10, and is a plan cross-sectional view including a plane cross section of the valve unit in the hot and cold water mixing device according to the second embodiment of the present invention.

  First, as shown in FIG. 10, FIG. 11 and FIG. 13, a water passage 218 through which water supplied from the lower (upstream) water supply pipe 210 passes is formed in the faucet body 208 so as to extend in the vertical direction. In addition, the hot water passage 220 through which hot water supplied from the lower (upstream) hot water supply pipe 212 passes is formed to extend in the vertical direction. The upper end portions (downstream end portions) of the water passage 218 and the water passage 220 are respectively connected to the water passage 224a and the hot water passage of the fixed valve body 224 of the valve unit 222 built in the faucet body 208. Connected to each of the paths 224b.

Next, as shown in FIGS. 10 to 13, the valve unit 222 is disposed below and is fixedly attached to the fixed valve body 224 slidably and rotatably with respect to the upper surface of the fixed valve body 224. A valve body 226 and a connection lever 228 for connecting the movable valve body 226 and the operation handle 202 are provided. The connection lever 228 can slide the movable valve body 226 in the front-rear direction along the upper surface of the fixed valve body 224 by the operation of the flow operation angle θ by the operation handle 202. By operating the adjustment operation angle φ, the connection lever 228 can rotate the movable valve body 226 within the upper surface of the fixed valve body 224.
As shown in FIGS. 12 and 13, the water supplied from the water passage 224 a of the fixed valve body 224 and the fixed valve body in a state where the movable valve body 226 is opened at the center of the movable valve body 226. A mixing chamber 226a in which hot water supplied from the hot water passage 224b of 224 is mixed is formed.
When the movable valve body 226 is opened, the mixing chamber 226 a communicates with at least one of the water passage 224 a and the hot water passage 224 b of the fixed valve body 224. The mixed hot water flows into the hot water mixing path 224c of the fixed valve body 224 below (downstream side) of the mixing chamber 226a of the movable valve body 226.

Furthermore, as shown in FIGS. 10, 12, and 13, a hot and cold mixing path 230 is formed on the back side of the water passage 218 and the hot water passage 220 in the faucet body 208. The upper end portion (upstream end portion) of 230 is connected to the hot water mixing passage 224c of the fixed valve body 224, and the downstream side of the hot water mixing passage 230 communicates with the flow passage 204a in the spout 204 (see FIG. 12). Yes.
With these configurations, the movable valve body 226 functions as an on-off valve that opens and closes the water passage 224a and the hot water passage 224b of the fixed valve body 224 according to the operation of the flow rate operation angle θ by the operation handle 202, and the spout 204 discharges. It is possible to switch between water discharge and water stop from the water port 206, and the fixed valve body 224 from each of the water passage 224a and the hot water passage 224b of the fixed valve body 224 according to the operation of the temperature adjustment operation angle φ by the operation handle 202. The temperature of the hot water is adjusted by adjusting the amount of hot water and water flowing into the hot water mixing path 224 c of the hot water, and the temperature-adjusted hot water is supplied from the hot water mixing path 230 of the faucet body 208 into the spout 204. Water is discharged from the water outlet 206 of the spout 204 through the flow path 204a.

Next, referring to FIG. 9 to FIG. 16, the intake and drain valve unit 216 of the hot and cold water mixing faucet device 200 of the present embodiment and the intake and drain valve main body 214 of the intake and drain valve unit 216 are opened to thereby The details of the communication part C that enables drainage and the drainage part D that enables intake and drainage by opening the intake / drain valve body 214 by the intake / drain valve unit 216 will be described.
FIG. 14 is an exploded perspective view of an intake / drain valve unit of a hot and cold water mixing device according to a second embodiment of the present invention, and FIG. 15 is a hot water and water mixing device according to the second embodiment of the present invention shown in FIG. FIG. 16 is a partially enlarged cross-sectional view showing a partially enlarged intake and drain valve unit of FIG. 16, and FIG. 16 is a partially enlarged view of the intake and drain valve unit of the hot and cold water mixing faucet device according to the second embodiment of the present invention shown in FIG. It is a partial expanded sectional view shown expanding.

First, as shown in FIGS. 14 to 16, the intake / drain valve body 214 of the intake / drain valve unit 216 is manually attached to the intake / drain valve unit mounting portion A on the back surface of the faucet body 208 to which the intake / drain valve unit 216 is attached. The first communication port 232, the second communication port 234, and the third communication port 236 that are opened and closed by the intake / drain valve main body 214 are formed as the communication portion C that enables intake and drainage by opening the valve. Has been.
In addition, the intake / drain valve unit mounting portion A on the back surface of the faucet body 208 has a drainage portion D that allows intake and drainage by manually opening the intake / drain valve body 214 of the intake / drain valve unit 216, A drain port 238 is formed.

Next, as shown in FIGS. 14 to 16, the intake / drain valve main body 214 of the intake / drain valve unit 216 is formed in the intake / drain valve unit mounting portion A provided on the back side of the faucet body 208. A valve body 240 that opens and closes simultaneously with respect to the three communication ports 232, 234, 236 of the part C and the drain port 238 of the drainage part D is provided.
The intake / drain valve unit 216 includes a manual operation member 242 that is fixed to the back side of the valve body 240 and manually opens and closes the valve body 240.
15 and FIG. 16, the valve body 240 in a closed state in which the front surface 240a of the valve body 240 is in contact with the back surface (seat surface) 244 of the faucet body 208 is shown.
Further, the manual operation member 242 is fixed to the back surface of the valve body 240 and holds a valve body holding portion 242a, and extends from the center of the back surface of the valve body holding portion 242a to the rear side by a predetermined length. The formed rotating shaft portion 242b and a knob portion 242c fixed to the rear end surface of the rotating shaft portion 242b are provided. A male screw 242d is formed on the outer peripheral surface of the rotation shaft portion 242b.

Furthermore, as shown in FIGS. 14 to 16, the intake / drain valve unit 216 includes a holding member 246 that is attached to the back side of the valve body 240 and holds the valve body 240 and the manual operation member 242. The holding member 246 is fixed to the back surface 244 of the faucet body 208 facing the holding member 246 with bolts 248.
As shown in FIGS. 14 to 16, the holding member 246 has a female screw hole 246a penetrating in the front-rear direction. The rotary shaft portion 242b of the manual operation member 242 is inserted into the female screw hole 246a. In addition, it is screwed with the male screw 242d of the rotating shaft portion 242b. When the user pinches the knob portion 242c of the manual operation member 242 with his / her finger and rotates it around the longitudinal central axis L2 of the manual operation member 242, the rotation shaft portion 242b of the manual operation member 242 rotates and manually When the operation member 242 slides in the front-rear direction with respect to the holding member 246, the valve body 242 fixed to the valve body holding portion 242a of the manual operation member 242 can be moved in the front-rear direction to open and close. It has become.

Further, as shown in FIGS. 15 and 16, an operation chamber 250 is formed on the front side of the holding member 246 so that the valve body holding portion 242a of the manual operation member 242 can slide in the front-rear direction.
As shown in FIG. 15, when the valve body 240 is slid rearward by rotating the knob portion 242 c of the manual operation member 242 around the longitudinal central axis L <b> 2, the valve body holding portion 242 a of the manual operation member 242 is used. The manual operation member 242 can be rotated about the central axis L2 until the back surface 242e of the first and second rear surfaces 242e abuts on the depth surface 250a in the working chamber 250 corresponding to the front and rear directions, and is rearward along the central axis L2. It can slide to the side.
On the other hand, as shown in FIG. 15, when the valve body 56 is slid forward by rotating the knob portion 242c of the manual operation member 242 about the central axis L2 in the longitudinal direction, ) The manual operation member 242 can be rotated around the central axis L2 until the 240a comes into contact with the back surface (seat surface) 244 of the faucet body 2 of the intake / drain valve unit mounting portion A. It can slide along the front side.

  15 and 16 indicates the position of the front surface 240a of the valve body 240 in the most opened state. When the valve body 240 is opened, the front surface 240a of the valve body 240 and the water Between the back surface (sheet surface) 244 of the plug body 208, there are three communication ports 232, 234, 236 of the communication portion C of the back surface 244 of the faucet body 208 and a drain port 238 of the drainage portion D shown in FIG. A communication chamber S2 that communicates with each other is formed.

Next, as shown in FIGS. 10, 11, 14, and 15, in the faucet body 208, there is a water passage 218 on the upstream side of the movable valve body 226 and a first back surface of the faucet body 208. A first communication path 252 that communicates with the communication port 232 is formed as a part of the communication portion C.
Similarly, as shown in FIGS. 10 and 15, the second communication path that allows the hot water passage 220 upstream of the movable valve body 226 to communicate with the second communication port 234 on the back surface of the faucet body 208. 254 is formed as a part of the communication part C. Further, the communication chamber S2 on the front side of the valve body 240 communicates with the second communication port 234 and the second communication path 254 of the communication portion C in a state where the valve body 240 is opened. Yes.

Next, as shown in FIGS. 14 and 16, in the faucet body 208, the middle of the hot water / mixing channel 230 and the third communication port 236 on the back surface of the faucet body 208 and the communication chamber S <b> 2 are communicated. Three communication paths 258 are formed.
In addition, the communication chamber S2 communicates with the third communication port 236 and the third communication passage 258 of the communication portion C in a state where the valve body 240 is opened.
After a water drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the water drain side and water supply from the water supply pipe 210 to the water passage 218 of the water faucet body 208 is stopped, the intake drain valve unit 216 When the manual operation member 242 is manually rotated around the central axis L2 and the valve body 240 of the intake / drain valve body 214 is opened, the three communication ports 232 and 234 of the communication portion C of the back surface 244 of the faucet body 208 are opened. , 236 and the drainage port 238 of the drainage part D are opened simultaneously. At this time, a negative pressure is generated due to a decrease in the water pressure in the flow channel on the upstream side of the water supply pipe 210, and this negative pressure causes water in the water passage 218 of the faucet body 208 to pass through the water supply pipe 210. It is discharged to the upstream side of 210.

Further, as shown in FIGS. 14 and 16, the faucet body 208 is provided with a drain outlet 260 as a part of the drainage portion D in the vicinity of the lower portion of the intake / drain valve unit 216.
Furthermore, between the drain outlet 260 and the drain outlet 238 in the faucet body 208, after extending a predetermined distance from the drain outlet 238 to the front side, it bends downward and extends downward by a predetermined distance, and again to the rear side. A drainage channel 262 that is bent and extends rearward a predetermined distance is formed as a part of the drainage portion D.

According to the hot and cold water mixing apparatus 200 according to the second embodiment of the present invention described above, the drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the water drain side, and the water faucet body from the water supply pipe 210 is operated. When the water supply to the water passage 218 of 208 is stopped, the manual operation member 242 of the intake / drain valve unit 216 is manually rotated around the central axis L2 to open the valve body 240 of the intake / drain valve main body 214. The three communication ports 232, 234, 236 of the communication part C on the back surface 244 of the faucet body 208 and the drainage port 238 of the drainage part D are simultaneously opened. At this time, a negative pressure is generated due to a decrease in the water pressure in the flow channel on the upstream side of the water supply pipe 210, and this negative pressure causes water in the water passage 218 of the faucet body 208 to pass through the water supply pipe 210. It is discharged to the upstream side of 210.
Further, the water is sucked into the hot water / mixing passage 230 on the upstream side from the water outlet 206 of the spout 204, and the valve body 240 passes from the hot / water mixing passage 230 through the third communication passage 258 and the third communication port 236 of the communication portion C. When the air is sucked into the communication chamber S2 on the front side of the water, the hot water in the hot water / mixing channel 230 passes through the third communication passage 258 and the third communication port 236 of the communication part C, and the front side of the valve element 240 Drained into the communication chamber S2.
Then, the drainage in the communication chamber S2 on the front side of the valve body 240 is drained from the drainage port 238 of the drainage part D through the drainage channel 262 to the outside of the faucet body 208 from the lower drainage port 260.
As a result, by manually operating the manual operation member 242 of the intake / drain valve unit 216 after performing a drain operation in which a drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the drain side. By simply opening the intake / drain valve body 214, intake and drainage can be efficiently performed simultaneously into the faucet body 208. Therefore, water can be easily drained from the faucet body 208 without requiring a complicated operation.
In addition, after performing the drain operation, the intake and drain valve main body 214 is simply opened by one manual operation of the manual operation member 242 of the intake and drain valve unit 216. Since it can be performed at the same time, the water in the faucet body 208 can be drained efficiently and reliably.

  In addition, according to the hot and cold water mixing apparatus 200 according to the second embodiment of the present invention, the faucet body 208 is provided with the drain outlet 260 as a part of the drainage part D near the lower part of the intake drain valve unit 216. Yes. Therefore, after the drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the water drain side and the water supply from the water supply pipe 210 to the water passage 218 of the faucet body 208 is stopped, the manual operation member 242 is operated. When the valve body 240 of the intake / drain valve body 214 is opened by manually operating the water, the water is drained from the hot water / mixing channel 230 through the third communication passage 258 and the third communication port 236 of the communication portion C. The drainage in the connected communication chamber S2 can be drained from the drainage port 238 of the drainage part D through the drainage channel 262 to the outside of the faucet body 208 from the lower drainage port 260. The water in 208 can be drained.

Next, with reference to FIG. 17, a hot and cold water mixing faucet device according to a third embodiment of the present invention will be described.
FIG. 17: is side surface sectional drawing along the right side surface cross section of the water flow path in the hot / cold water mixing faucet device by 3rd Embodiment of this invention.
In addition, in the hot water / mixing faucet device 300 according to the third embodiment of the present invention shown in FIG. 17, the same parts as those of the hot water / water mixing faucet device 200 according to the second embodiment of the present invention shown in FIGS. Reference numerals are assigned and description thereof is omitted.

As shown in FIG. 17, with respect to the hot and cold water mixing faucet device 300 according to the third embodiment of the present invention, the communicating portion is connected to the intake / drain valve unit mounting portion A on the back surface of the faucet body 306 to which the intake / drain valve unit 216 is attached. The C first communication port 232 and the first communication channel 252, the second communication port 234 and the second communication channel 254, and the third communication port 236 and the third communication channel 258 are formed. In this respect, the drainage port 238 and the drainage port 260 of the drainage part C of the hot and cold water mixing faucet device 200 according to the second embodiment of the present invention are the same as the hot water mixing faucet device 200 according to the second embodiment of the present invention described above. And the drainage channel 262 is not provided.
In FIG. 17, the valve body 240 of the intake / drain valve main body 214 of the intake / drain valve unit 216 is shown in an open state, and the flow of intake and drainage in the communicating portion C during the draining operation is shown. Shown with arrows.

According to the hot and cold water mixing faucet device 300 according to the third embodiment of the present invention described above, when a drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the drain side, a water supply source (not shown). After the water supply to the faucet body 308 is stopped, the manual operation member 242 of the intake / drain valve unit 216 is manually rotated about the central axis L2 to open the valve body 240 of the intake / drain valve body 214 When operated, the communication ports 232, 234, 236 of the communication part C are opened.
As a result, the water is drawn into the hot water mixing passage 230 upstream of the spout 204 of the spout 204, and from the hot water mixing passage 230 through the third communication passage 258 and the third communication opening 236 of the communication portion C, the valve body. The hot water in the hot and cold water mixing passage 230 is sucked into the communication chamber S3 on the front side of 240 through the third communication passage 258 and the third communication port 236 of the communication portion C, and the front side of the valve body 240 It is drained into the communication chamber S3.
Then, air is sucked into the first communication port 232 and the first communication passage 252 of the communication portion C from the communication chamber S3 on the front side of the valve body 240, thereby draining the communication chamber S3 on the front side of the valve body 240. Is discharged to the water passage 218 upstream of the mixing chamber 226a of the movable valve body 226 through the first communication port 232 and the first communication passage 252 of the communication portion C, and then the water supply pipe 210. It is drained to the upstream side.
At the same time, air is drawn into the second communication port 234 and the second communication passage 254 of the communication portion C from the communication chamber S3 on the front side of the valve body 240, thereby draining the communication chamber S3 on the front side of the valve body 240. Is discharged to the hot water passage 220 upstream of the mixing chamber 226a of the movable valve body 226 through the second communication port 234 and the second communication passage 254 of the communication portion C, and then the hot water supply pipe 212. It is drained to the upstream side.
As a result, the manual operation member 242 of the intake / drain valve unit 216 is manually operated after performing the drain operation in which the drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the drain side. By simply opening the intake / drain valve body 214, intake and drainage can be efficiently performed simultaneously into the faucet body 208. Therefore, water can be easily drained from the faucet body 208 without requiring a complicated operation.

In addition, in the hot-water mixing faucet device 300 by 3rd Embodiment of this invention, the drain outlet of the drainage part C of the hot-water mixing faucet device 200 by 2nd Embodiment of this invention shown in FIGS. 9-16 as an example. 238, the drain port 260 and the drainage channel 262 are omitted. However, the present invention is not limited to such a mode, and as a modification of the hot and cold water mixing apparatus according to the third embodiment of the present invention, Alternatively, the drainage means 238, 260, 262 may be omitted.
According to such a modification of the hot and cold water mixing faucet device according to the third embodiment of the present invention, the drain plug (not shown) on the upstream side of the water supply pipe 210 is operated to the water drain side, and After the water supply to the water passage 218 of the faucet body 208 is stopped, the manual operation member 242 of the intake / drain valve unit 216 is manually rotated around the central axis L2 to open the valve body 240 of the intake / drain valve body 214. When the valve is operated, the three communication ports 232, 234, 236 of the communication portion C on the back surface 244 of the faucet body 208 and the drainage port 238 of the drainage portion D are simultaneously opened. At this time, a negative pressure is generated due to a decrease in the water pressure in the flow channel on the upstream side of the water supply pipe 210, and this negative pressure causes water in the water passage 218 of the faucet body 208 to pass through the water supply pipe 210. It is discharged to the upstream side of 210.
Further, the water is sucked into the hot water / mixing passage 230 on the upstream side from the water outlet 206 of the spout 204, and the valve body 240 passes from the hot / water mixing passage 230 through the third communication passage 258 and the third communication port 236 of the communication portion C. When the air is sucked into the communication chamber S2 on the front side of the water, the hot water in the hot water / mixing channel 230 passes through the third communication passage 258 and the third communication port 236 of the communication part C, and the front side of the valve element 240 Drained into the communication chamber S2.
Then, when the first communication port 232 and the first communication passage 252 of the communication portion C are sucked from the communication chamber S2, a portion of the drainage in the communication chamber S2 on the front side of the valve body 240 is connected to the communication portion. After draining into the water passage 218 upstream of the mixing chamber 226a of the movable valve body 226 through the first communication port 232 and the first communication passage 252, the water can be drained upstream of the water supply pipe 210. it can.
At the same time, the air is sucked into the second communication port 234 and the second communication passage 254 of the communication portion C from the communication chamber S2 on the front side of the valve body 240, so that the inside of the communication chamber S2 on the front side of the valve body 240 After draining a part of the drainage water into the hot water passage 220 upstream of the mixing chamber 226a of the movable valve body 226 through the second communication port 234 and the second communication passage 254 of the communication part C, The water can be drained to the upstream side of the pipe 212.
Further, at the same time, a part of the drainage in the communication chamber S2 on the front side of the valve body 240 is drained from the drainage port 238 of the drainage part D through the drainage channel 262 to the outside of the faucet body 208 from the lower drainage port 260. Therefore, it is possible to drain water from the faucet body 208 more efficiently and reliably.

DESCRIPTION OF SYMBOLS 1 Hot water mixing faucet device by 1st Embodiment of this invention 2 Water faucet main body 4 Hot water supply leg 6 Water supply leg 8 Water flow path 8a Hot water flow path (2nd flow path) upstream from the backflow prevention valve for hot water )
8b Hot water passage from hot water backflow prevention valve to thermo unit
(3rd flow path, 7th flow path)
10 water flow path 10a Water flow path upstream of the water backflow prevention valve (first flow path)
10b Water passage from the backflow prevention valve for water to the thermo unit
(3rd flow path, 6th flow path)
12 Backflow prevention valve for hot water 14 Backflow prevention valve for water 16 Thermo unit (hot water mixing section, temperature control function section)
16a Hot water inlet part of thermo unit (hot water inlet part of temperature control function part)
16b Water inflow part of thermo unit (water inflow part of temperature control function part)
16c Hot water outflow part of thermo unit (hot water outflow part of temperature control function part)
18 Karan (Karan spout)
20 Shower head (shower water discharge part)
20a shower hose 22 switching unit (switching unit)
24 Hot and cold water mixing channel (8th channel)
26 Switching valve (open / close valve)
28 Hot water temperature adjustment dial 30 Stop water switching handle 32 Intake drain valve body (intake drain valve)
34 Intake drain valve unit (intake drain valve)
36 Communication port, first inlet (first inlet)
38 Second inlet (second inlet)
40 3rd air inlet (3rd air intake part, 6th air intake part)
42 4th inlet (3rd intake part, 6th intake part)
44 5th inlet (5th inlet)
46 Sixth inlet (sixth inlet)
48 1st drainage port (1st drainage part, 3rd drainage part)
50 Second drainage port (first drainage part, fourth drainage part)
52 3rd drainage port (1st drainage part, 5th drainage part)
54 Fourth drain port (second drainage section)
56 Valve body (intake / drain valve)
56a Front face of valve body (seal surface)
58 Manual operation member (manual operation part)
58a Manual operation member valve body holding portion 58b Manual operation member rotating shaft portion 58c Manual operation member knob 58d Male screw of manual operation member rotation shaft portion 58e Back surface of manual operation member valve body holding portion 60 Water faucet Back of the main unit (sheet surface)
62 holding member 62a female screw hole 62a vent hole 64 bolt 66 working chamber 66a depth surface 68 communication path (first intake part)
74 Communication path (communication part, intake part)
76 Communication path (communication part, drainage part)
78 Communication passage (drainage)
80 communication passage (drainage)
82 Communication path (second air intake)
84 communication path (3rd intake part, 6th intake part)
86 communication path (first drainage section, third drainage section)
88 communication path (3rd intake part, 7th intake part)
90 communication path (first drainage section, fourth drainage section)
92 communication path (first drainage section, fifth drainage section)
94 Flow path from the switching valve of the switching unit to Karan (fourth flow path)
96 communication path (fourth intake part)
98 Connection member (shower hose connection part)
100 Flow path from the switching valve of the switching unit to the shower head (fifth flow path)
102 communication path (fifth intake part)
104 Communication path (second drainage section)
A Intake drain valve unit mounting portion L1 Center axis in the longitudinal direction of the manual operation member I Intake portion opened by the intake drain valve unit O Drain portion opened by the intake drain valve unit S1 Communication chamber 200 Second embodiment of the present invention Hot water / water mixing faucet device by 202 202 Operation handle 204 Spout 204a Flow path in spout 206 Spout water outlet (water discharge portion)
208 Water faucet body 210 Water supply pipe 212 Hot water supply pipe 214 Air intake drain valve body 216 Air intake drain valve unit 218 Water passage 220 Water passage 222 Valve unit 224 Fixed valve body 224a Water passage 224b Fixed valve body water passage 224c Hot water mixing channel of fixed valve body
226a Mixing chamber of movable valve body (hot water mixing section, hot water mixing path)
228 Connection lever 230 Hot and cold water mixing path 232 First communication port (first communication part)
234 Second communication port (second communication part)
236 Third communication port (third communication part)
238 Drain outlet (drainage part)
240 Valve body 240a Front surface of valve body (seal surface)
242 Manual operation member (manual operation part)
242a Manual operation member valve body holding portion 242b Manual operation member rotation shaft portion 242c Manual operation member knob portion 242d Manual operation member rotation shaft portion male screw 242e Back surface of manual operation member valve body holding portion 244 Water faucet Back of the main unit (sheet surface)
246 Holding member 246a Female screw hole 248 Bolt 250 Working chamber 250a Depth surface 252 First communication path (first communication portion)
254 Second communication path (second communication part)
258 Third communication path (third communication part)
260 Drain port (drainage)
262 Drainage channel (drainage section)
A1 Operation axis A2 Operation axis B Counter C Communication part that enables intake and drainage by the intake drainage valve unit D Drainage part that allows intake and drainage by the intake drainage valve unit L2 Central axis in the longitudinal direction of the manual operation member S2 Communication Chamber θ Flow adjustment operation angle φ Temperature adjustment operation angle 300 Hot water / water mixing faucet device according to the third embodiment of the present invention 308 Faucet body S3 Communication room

Claims (8)

A hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source,
A faucet body provided with a hot water mixing unit in which hot water supplied from a hot water supply source and water supplied from a water supply source are mixed;
An intake / drain valve provided in the faucet body, manually opened and closed, and performs intake and drainage with respect to the faucet body;
A manual operation part for manually opening and closing the intake / drain valve,
The intake / drain valve is opened by manually operating the manual operation section after performing a drain operation to stop water supply to the faucet body, and the hot water and water upstream of the hot water mixing section are opened. The hot and cold mixed water is configured such that intake is performed with respect to each of the flow paths, and suction or drainage is performed with respect to the flow path of the hot water downstream of the hot and cold mixing unit. Stopper device.   Furthermore, the hot water inflow part and the water inflow part into which hot water and water respectively flow from the upstream side of the hot water / water mixing part, and the amount of hot water and water flowing in from each of these hot water inflow part and water inflow part are adjusted. And a hot water outflow section for flowing out the temperature-controlled hot water by mixing, the temperature control function section from the hot water inflow section and the water inflow section toward the hot water outflow section. The hot and cold water mixing faucet device according to claim 1, wherein the faucet body is inclined and disposed in the faucet body so as to incline downward.   And a shower hose part provided at the tip of the shower head for discharging hot water mixed in the hot water mixing part, and a shower hose connection part for connecting the shower hose part and the faucet body. The hot and cold water mixing faucet device according to claim 1, wherein the shower hose connection portion is located above a lowest position of the drainage portion that is opened and closed by the intake drainage valve. A hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source,
A hot water passage through which hot water supplied from a hot water source passes, a water passage through which water supplied from a water supply source passes, and a hot water backflow prevention valve provided in the hot water passage to prevent back flow of hot water, A water backflow prevention valve that is provided in the water passage to prevent backflow of water, and is provided on the downstream side of the water backflow prevention valve and the water backflow prevention valve, and is supplied from the water passage. A faucet body provided with a temperature adjustment function unit that adjusts the temperature of hot water by adjusting and mixing the amount of hot water and the amount of water supplied from the water passage,
A currant water spouting unit that is provided on the downstream side of the faucet body and discharges hot water mixed by the temperature control function unit,
A shower water discharger provided on the downstream side of the faucet body, for discharging hot water mixed in the temperature control function unit;
Provided on the downstream side of the temperature control function part of the faucet body, and has an open / close valve for opening and closing a hot and cold water mixing path for supplying hot water to each of the curan water spouting part and the shower water spouting part. A switching unit capable of switching between water discharge and water stop, and water discharge and water stop from the shower water discharge unit,
An intake part provided in the faucet body and capable of inhaling outside air;
A drainage portion provided in the faucet body, capable of draining residual water in the faucet body;
The air intake unit and the drainage unit are provided so as to be manually openable and closable, and are manually opened after performing a water drain operation to stop water supply from the water supply source to the faucet body. An intake drainage valve that allows intake and drainage by the drainage part;
A manual operation part for manually opening and closing the intake / drain valve,
The intake section includes a first intake section provided in a first flow path, which is the water flow path upstream of the water backflow prevention valve, and the communication path upstream of the hot water backflow prevention valve. A second intake section provided in a second flow path that is a hot water passage, and a third flow path from each of the water backflow prevention valve and the hot water backflow prevention valve to the on-off valve. A third intake section, a fourth intake section provided in a fourth flow path from the on-off valve to the currant water discharge section, and a fifth flow path from the open / close valve to the shower discharge section. A fifth intake section,
The drainage section includes a first drainage section provided in the third flow path and a second drainage section provided in the fifth flow path. Faucet device. The third flow path includes a sixth flow path from the water backflow prevention valve to the temperature control function part, a seventh flow path from the hot water backflow prevention valve to the temperature control function part, An eighth flow path from the temperature control function part to the on-off valve,
The third intake section includes a sixth intake section provided in the sixth flow path, and a seventh intake section provided in the seventh flow path,
The first drainage part is provided in the third drainage part provided in the sixth channel, the fourth drainage part provided in the seventh channel, and the eighth channel. The hot and cold water faucet device according to claim 4, further comprising: a fifth drainage unit. A hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source,
A hot water passage through which hot water supplied from a hot water source passes, a water passage through which water supplied from a water supply source passes, hot water supplied from the hot water passage, and water supplied from the water passage are mixed. A faucet body comprising: a hot and cold mixing section; and a hot and cold mixing path through which hot water mixed in the hot and cold mixing section passes;
A water discharger that is provided on the downstream side of the faucet body and discharges hot water that has passed through the hot water and water mixing path;
It is provided in the faucet body and can switch between water discharge and water stop from the water discharge section by opening and closing the water supply path, the water flow path and the hot water mixing section, and the water supply path and the water flow path. An on-off valve that adjusts the amount of hot water and water flowing into the hot water mixing section from each of the above,
A communication part provided in the faucet body, and communicating with each of the water passage and the hot water passage upstream of the hot water mixing part and the hot water mixing path downstream of the hot water mixing part;
The communication part is provided in an openable and closable manner, and is manually opened after performing a draining operation to stop water supply from the water supply source to the faucet body, whereby the communication part is opened. An intake / drain valve that performs intake and drainage into the faucet body;
A manual operation part for manually opening and closing the intake / drain valve,
The communication portion includes a first communication portion from the water passage to the intake drain valve, a second communication portion from the hot water passage to the intake drain valve, the hot water mixing passage, and the intake drain valve. A third communication part for communicating
In the vicinity of the intake / drain valve in the faucet body, a drainage part for draining hot water drained from the third communication part to the outside of the faucet body is provided to be openable / closable by the intake / drain valve, When the intake and drain valve is manually opened after the draining operation, the third communication portion and the drainage portion are sucked into the hot water mixing passage from the water discharge portion, and The first communication part and the second communication part are sucked into the first communication part and the second communication part through the three communication parts, and hot water in the hot and cold water mixing path passes through the third communication part from the drainage part to the faucet body. A hot and cold water mixing device characterized by being drained to the outside. A hot and cold water mixing faucet device for discharging hot water mixed with hot water supplied from a hot water supply source and water supplied from a water supply source,
A hot water passage through which hot water supplied from a hot water source passes, a water passage through which water supplied from a water supply source passes, hot water supplied from the hot water passage, and water supplied from the water passage are mixed. A faucet body comprising: a hot and cold mixing section; and a hot and cold mixing path through which hot water mixed in the hot and cold mixing section passes;
A water discharger that is provided on the downstream side of the faucet body and discharges hot water that has passed through the hot water and water mixing path;
It is provided in the faucet body and can switch between water discharge and water stop from the water discharge section by opening and closing the water supply path, the water flow path and the hot water mixing section, and the water supply path and the water flow path. An on-off valve that adjusts the amount of hot water and water flowing into the hot water mixing section from each of the above,
A communication part provided in the faucet body, and communicating with each of the water passage and the hot water passage upstream of the hot water mixing part and the hot water mixing path downstream of the hot water mixing part;
The communication part is provided in an openable and closable manner, and is manually opened after performing a draining operation to stop water supply from the water supply source to the faucet body, whereby the communication part is opened. An intake / drain valve that performs intake and drainage into the faucet body;
A manual operation part for manually opening and closing the intake / drain valve,
The communication portion includes a first communication portion from the water passage to the intake / drain valve, a second communication portion from the hot water passage to the intake / drain valve, the hot water mixing passage and the intake / drain valve. A third communication portion that communicates with the water, and when the intake drain valve is manually opened after performing the water draining operation, the water is sucked into the hot water mixing passage from the water discharge portion, and the hot water mixing passage from the hot water mixing passage. Air is sucked into each of the first communication portion and the second communication portion via the third communication portion, and hot water in the hot and cold water mixing path passes through the third communication portion and the first communication portion and A hot and cold water mixing faucet device characterized by being drained from each of the second communicating portions to each of the water passage and the hot water passage.   Further, a drainage portion provided in the faucet body in the vicinity of the intake drainage valve so as to be opened and closed by the intake drainage valve and draining hot water drained from the third communication portion to the outside of the faucet body. The hot and cold water mixing faucet device according to claim 7.

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