JP6256861B2 - Hot and cold water mixing device - Google Patents

Description

  The present invention relates to a hot and cold water mixing and discharging apparatus, and more particularly, to a hot and cold water mixing and discharging apparatus that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature.

  Registered utility model No. 3023926 (Patent Document 1) describes a water tap. This tap for water supply has a connection part connected to a water pipe, 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 a water faucet is installed in a cold region, it is necessary to drain water at night to prevent the water in the faucet body or the water pipe from freezing. According to the faucet described in the registered utility model No. 3023926, the water staying in the flow path is discharged by operating the water drain plug provided in the middle of the water pipe to the drain side. That is, when air is sucked into the flow path from the intake valve, the water staying in the flow path from the downstream side of the water drain plug to the upstream side of the tap function part of the tap is discharged. In addition, the water on the downstream side of the stopper function part is discharged from the water outlet, and the water does not stay on the downstream side.

Registered Utility Model No. 3023926

However, there is a problem that the operation becomes complicated when draining water in a cold region using a conventional hot and cold water mixing and discharging apparatus with a temperature control function.
Next, with reference to FIG. 8, the water draining in the conventional hot-water mixed water discharging apparatus with a temperature control function is demonstrated. FIG. 8 is a block diagram showing an outline of a conventional hot and cold water mixing and discharging apparatus.

  As shown in FIG. 8, the conventional hot and cold water mixing and discharging apparatus 100 includes a temperature adjustment unit 102 and a water discharge switching unit 104. A hot water supply pipe 106 and a water supply pipe 108 are connected to the temperature control unit 102, and hot water and water supplied from these are mixed in the temperature control unit 102 and flow into the water discharge switching unit 104. In the water discharge switching unit 104, the hot water mixed in the temperature adjustment unit 102 is switched to discharge water from the currant side 104a, to discharge water from the shower side 104b, or to stop water discharge from both sides. Therefore, in the hot and cold water mixing and discharging apparatus 100, even in the water stop state, the temperature adjusting unit 102 is filled with water, and the hot water and the supply pressure of water act on the temperature adjusting unit 102.

  Furthermore, check valves 106 a and 108 a are respectively provided in the hot water supply pipe 106 and the water supply pipe 108 on the upstream side of the temperature control unit 102. That is, since the hot water supply pipe 106 and the water supply pipe 108 communicate with each other through the temperature adjustment unit 102 even in the water stop state, if there is a difference between the hot water supply pressure and the water supply pressure, the hot water supply pipe 106 and the water supply pipe 108 are low from the higher supply pressure side. There is a risk of backflow to the side. By providing the check valves 106 a and 108 a, the back flow of hot water from the temperature adjustment unit 102 to the hot water supply pipe 106 or the water supply pipe 108 is prevented.

  When draining the hot and cold water mixing and discharging apparatus 100 having such a structure, first, the intake valves 106b and 108b provided on the upstream side of the check valves 106a and 108a are operated to the drain side to be opened. When a water drain plug (not shown) provided in the flow path upstream of the hot water supply pipe 106 and the water supply pipe 108 is operated to the drain side, outside air is taken in from the intake valves 106b and 108b, and the check valve Hot water and water staying upstream of 106a and 108a are respectively discharged. However, hot water staying in the temperature adjusting unit 102 and the water discharge switching unit 104 from the downstream side of the check valves 106a and 108a is blocked by the check valves 106a and 108a and is not discharged. Accordingly, a further intake cock 110 is provided at any location downstream of the check valves 106a and 108a, and is operated so as to be able to take in outside air, and at the same time, the discharge switch 104 is operated. Thus, there is a problem in that an additional operation of discharging hot water and water staying in the temperature control unit 102 and the like by communicating with the currant side 104a or the shower side 104b is required. In addition, if any one of the intake valves 106b and 108b or the drain cock 110 and the water discharge switching unit 104 is forgotten, there is a possibility that the staying water will freeze and damage the temperature control unit 102 or the like. .

  Accordingly, an object of the present invention is to provide a hot and cold water mixing and discharging apparatus that can easily drain water without requiring a complicated operation.

  In order to solve the above-described problem, the present invention is a hot water and water discharge apparatus that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature, and includes a hot water inlet and a hot water inlet for flowing in the supplied hot water, and A hot water mixing chamber having a water inlet for supplying the supplied water, a main valve body for adjusting the amount of hot water and water flowing from the hot water inlet and the water inlet into the hot water mixing chamber, and a hot water inlet and a water inlet, respectively. An intake valve that sucks outside air into the flow path when the inside of the flow path becomes negative pressure, a water discharge section that discharges hot water mixed in the hot water mixing chamber, When the water discharge from the water discharge unit is stopped, the water discharge unit has a drainage unit capable of draining hot water in the hot water mixing chamber and a water discharge switching mechanism for switching between water discharge and water stop from the water discharge unit. When the mechanism is switched to the still water state, the hot water inlet and the water inlet Together to close, it is characterized with hot and cold water mixing chamber, that communicating the drainage portion and the water discharger.

  In the present invention configured as described above, the amount of hot water and water flowing from the hot water inlet and the water inlet into the hot water mixing chamber is adjusted by the main valve body. The water discharge switching mechanism switches water discharge and water stop from the hot water discharge section mixed in the hot water mixing chamber. When the discharge water switching mechanism is switched to the water stop state, the hot water inlet and the water inlet are closed, and the hot water mixing chamber, the drainage section, and the water discharge section are communicated with each other.

  According to the present invention configured as described above, when draining the hot and cold water mixing and discharging apparatus in a water stop state, the water faucet provided simply in the hot water inlet and the flow channel upstream of the water inlet. Is operated to the water drain side, outside air is introduced from the intake valve to the flow path, and the hot water inlet and the water drain on the upstream side of the water inlet are completed. On the other hand, on the downstream side of each inlet, the hot water inlet and the water inlet are closed and the hot water mixing chamber, the drainage portion and the water discharge portion are in communication with each other in the water-stopped state. The hot water is discharged from the drainage section. As a result, it is not necessary to perform a special draining operation on the hot and cold water discharging apparatus, and draining can be performed very easily. Further, according to the present invention configured as described above, since the remaining water in the hot and cold water mixing chamber is discharged from the drainage part, the quality of the hot and cold water mixing and discharging apparatus is provided by providing the drainage part at a position that is not easily noticeable by the user. It is possible to drain water without damaging it.

  Further, the present invention is a hot and cold water mixing and discharging apparatus that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature, and supplies a hot water inlet and a supplied water to the supplied hot water. A hot water mixing chamber with a water inlet, a main valve body for adjusting the amount of hot water and water flowing into the hot water mixing chamber from the hot water inlet and the water inlet, and a flow path upstream of the hot water inlet and the water inlet, respectively. Each is provided, and when the inside of the flow path becomes negative pressure, the intake valve that sucks outside air into the flow path, the first water discharge section that discharges the hot water mixed in the hot water mixing chamber, and the hot water mixing chamber are mixed. A second water discharge section for discharging hot water, a water discharge from the first water discharge section, and a water discharge switching mechanism for switching water discharge and water stop from the second water discharge section. When switched to the water state, the hot water inlet and the water inlet are closed, A mixing chamber, is characterized by communicating the first water portion and a second water discharge portion.

  In the present invention configured as described above, the amount of hot water and water flowing from the hot water inlet and the water inlet into the hot water mixing chamber is adjusted by the main valve body. The spouting water switching mechanism switches water discharged from the first water discharging section, water discharged from the second water discharging section, and water stopping mixed in the hot water mixing chamber. When the water discharge switching mechanism is switched to the water stop state, the hot water inlet and the water flow inlet are closed, and the hot water mixing chamber and the first water discharge portion and the second water discharge portion are communicated with each other.

  According to the present invention configured as described above, when draining the hot and cold water mixing and discharging apparatus in a water stop state, the water faucet provided simply in the hot water inlet and the flow channel upstream of the water inlet. Is operated to the water drain side, outside air is introduced from the intake valve to the flow path, and the hot water inlet and the water drain on the upstream side of the water inlet are completed. On the other hand, since the hot water inlet and the water inlet are closed and the hot water mixing chamber and the first and second water discharge portions are in communication with each other on the downstream side of each inlet, Hot water remaining in the mixing chamber is discharged from the first water discharger or the second water discharger. As a result, it is not necessary to perform a special draining operation on the hot and cold water discharging apparatus, and draining can be performed very easily. Moreover, according to this invention comprised in this way, the hot water mixing chamber can be drained, without providing a special drainage part.

In this invention, Preferably, the 1st water discharging part is comprised with the currant, and the 2nd water discharging part is comprised with the shower head.
According to the present invention configured as described above, the present invention can be applied to the hot and cold water mixing and discharging apparatus having the most general configuration including a currant and a shower head.

In the present invention, preferably, the spouting water switching mechanism includes a switching valve provided on the downstream side of the hot water mixing chamber, and the switching valve includes a first valve port for communicating the hot water mixing chamber and the first water discharging portion, and A second valve opening for communicating the hot water mixing chamber and the second water discharge section is provided, and only the first valve opening is opened at the time of water discharge from the first water discharge section, and the second at the time of water discharge from the second water discharge section. When only the valve port is opened and switched to the water stop state, both the first valve port and the second valve port are opened.
According to the present invention configured as described above, the hot water mixing chamber, the first water discharge unit, and the second water discharge unit can be communicated with each other with a simple configuration in a water stop state.

  In the present invention, preferably, the discharge water switching mechanism further includes an inlet valve drive mechanism, and the inlet valve drive mechanism operates in conjunction with the switching valve when the switching valve is switched to the water stop state. Close the inlet and water inlet.

  According to the present invention thus configured, the inlet valve driving mechanism closes the hot water inlet and the water inlet in conjunction with the switching valve, so that the hot water inlet and the water inlet can be operated by a single operation on the switching valve. And the switching of the water discharge section can be performed simultaneously.

In the present invention, preferably, the hot water / water mixing chamber includes a hot water side sheet portion that forms part of the hot water inlet, and a water side sheet portion that forms part of the water inlet, and the main valve body is the hot water side sheet. The amount of hot water and water flowing into the hot and cold water mixing chamber from the hot water inlet and the water inlet, respectively, is adjusted by sliding between the position of the hot water inlet and the position of the water side seat. When the water stoppage switching mechanism is switched to the water stoppage state, the main valve element is simultaneously moved to both the hot water side seat portion and the water side seat portion by sliding the hot water side seat portion or the water side seat portion. The hot water inlet and the water inlet are closed by contact.
According to the present invention configured as described above, each inlet can be closed without providing a hot water inlet and a special valve body for closing the water inlet.

  Preferably, the present invention further includes a hot water supply leg for supplying hot water to the hot water inlet and a water supply leg for supplying water to the water inlet, and the hot water supply leg and the water supply leg are provided inside. Stop cocks for closing the formed flow paths are provided, and intake valves are provided for the stop cocks.

  According to the present invention configured as described above, since the intake valve is provided in the stop cock, the general-purpose hot water supply leg and the stop cock provided in the water supply leg are connected to the stop valve provided with the intake valve. An intake valve can be easily provided on the upstream side of the hot / cold water mixing chamber simply by replacing the faucet.

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

It is a perspective view which shows the whole hot-water / water mixing apparatus according to the first embodiment of the present invention. It is sectional drawing of the water supply leg provided in the back side of the faucet main body in the hot-water-mixing water discharging apparatus of 1st Embodiment of this invention. It is sectional drawing of the hot and cold water mixing and discharging apparatus by 1st Embodiment of this invention. It is a perspective view of the hot and cold water mixing temperature adjustment device and the switching valve built in the hot and cold water mixing and discharging apparatus according to the first embodiment of the present invention. It is a disassembled perspective view of the hot-water mixing temperature control apparatus and switching valve which were incorporated in the hot-water mixing water discharging apparatus by 1st Embodiment of this invention. In the hot and cold water mixing and discharging apparatus of the first embodiment of the present invention, the rotation angle of the discharge water switching handle is shown on the horizontal axis, and the water passage area of the switching valve and the hot and cold water mixing temperature adjusting apparatus is shown on the vertical axis. It is a block diagram for demonstrating the draining operation of the hot-water / water-mixing water discharging apparatus by 1st Embodiment of this invention. It is a block diagram which shows the outline of the conventional hot water mixing water discharging apparatus. It is sectional drawing of the hot water supply leg with which the hot and cold water mixing and discharging apparatus by 2nd Embodiment of this invention is equipped. FIG. 10 is an enlarged cross-sectional view showing a state where the intake valve is opened in the hot water supply leg of FIG. 9.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
With reference to FIG. 1 thru | or FIG. 7, the hot-water mixing water discharging apparatus by 1st Embodiment of this invention is demonstrated.
FIG. 1 is a perspective view showing the entire hot and cold water mixing and discharging apparatus according to the first embodiment of the present invention.

  As shown in FIG. 1, a hot and cold water mixing and discharging apparatus 1 according to a first embodiment of the present invention includes a faucet body 2 and a hot water supply leg for supplying hot water from a water heater (not shown) to the faucet body 2. 4 and a water supply leg 6 for supplying tap water to the faucet body 2. Furthermore, the hot and cold water mixing and discharging apparatus 1 includes a hot water temperature adjusting dial 8 attached to the left end portion of the faucet body 2 and a spouting water switching handle 10 attached to the right end portion. Moreover, the hot and cold water mixing and discharging apparatus 1 includes a currant 12 that is a first water discharger that discharges temperature-controlled hot water and a shower head 14 that is a second water discharger. Further, the faucet body 2 incorporates a switching valve 16 that is an on-off valve. The hot and cold water mixing and discharging apparatus 1 of the present embodiment mixes hot water and water supplied from the hot water supply leg 4 and the water supply leg 6, respectively, so that the temperature is set by the hot water temperature adjustment dial 8. The water switching handle 10 is operated and discharged from the currant 12 or the shower head 14.

  Further, the hot water supply leg 4 is provided with an intake valve 4a for sucking outside air into the hot water supply leg 4 when the flow path in the hot water supply leg 4 becomes negative pressure. Similarly, the water supply leg 6 is provided with an intake valve 6a that sucks outside air into the water supply leg 6 when the flow path in the water supply leg 6 becomes negative pressure. In addition, a drainage portion 18 is provided at the lower part of the faucet body 2 so that hot water in the faucet body 2 can be drained to the outside when water discharge from the currant 12 and the shower head 14 is stopped.

The hot water supply leg 4 is configured to connect a hot water supply pipe (not shown) provided on the wall surface to the faucet body 2 and supply hot water to the faucet body 2.
The water supply leg 6 is configured to connect a water pipe (not shown) provided on the wall surface and the faucet body 2 to supply water to the faucet body 2.

  The faucet body 2 incorporates a hot and cold water mixing temperature adjusting device 20 (FIG. 4) that mixes hot water and water introduced through the hot water supply leg 4 and the water supply leg 6 and adjusts them to a desired temperature. ing. In addition, the discharge water switching handle 10 attached to the faucet body 2 switches the switching valve 16 built in the faucet body 2 by rotating this, so that the water stop state and the water discharge state from the currant 12 are switched. The water discharge state from the shower head 14 can be switched. When the discharge water switching handle 10 is rotated to the side of the currant, hot water mixed at an appropriate temperature is discharged from the currant 12 by the hot water / mixing temperature adjusting device 20 (FIG. 4), and the discharge water switching handle 10 is moved to the shower side. When rotating, hot water mixed at an appropriate temperature is discharged from the shower head 14.

  Further, the hot water temperature adjusting dial 8 operates the hot water mixing temperature adjusting device 20 incorporated in the faucet body 2 by turning the dial 8 to change the temperature of the hot water adjusted by the hot water mixing temperature adjusting device 20. It is configured to be able to.

Next, with reference to FIG. 2 thru | or FIG. 5, the internal structure of the hot-water mixing water discharging apparatus 1 of this embodiment is demonstrated.
FIG. 2 is a cross-sectional view of a water supply leg provided on the back side of the faucet body.
First, the structure of the intake valve 6a provided in the water supply leg 6 will be described with reference to FIG. As shown in FIG. 2, the intake valve 6a includes an intake valve body 19a, an intake valve body 19b slidably disposed in the intake valve body 19a, and an intake valve body that urges the intake valve body 19b. And an urging spring 19c.

The intake valve body 19a is a substantially cylindrical member, and an intake valve port 19d is formed at the tip.
The intake valve body 19b has a valve portion seated on the intake valve port 19d and a valve shaft portion extending from the valve portion to the back surface, and the valve shaft portion is slidable in the axial direction by the intake valve body 19a. It is supported.

The intake valve body urging spring 19c is a coil spring arranged so as to surround the valve shaft portion, and urges the intake valve body 19b with a weak urging force to seat the intake valve body 19b on the intake valve port 19d. ing. Here, when a water drain plug (not shown) provided in the flow path on the upstream side of the water supply leg 6 is operated to the drain side, water staying in the flow path flows out, Negative pressure is generated. When negative pressure is generated in the flow path, negative pressure is also generated in the flow path in the water supply leg 6, and the intake valve body 19b resists the urging force of the intake valve body urging spring 19c, and the intake valve port 19d. Pulled away from. Accordingly, outside air is drawn into the water supply leg 6 and the flow path communicating with the water supply leg 6 through the intake valve port 19d.
In addition, although the structure of the intake valve 6a provided in the water supply leg 6 was demonstrated here, the structure of the intake valve 8a provided in the hot water supply leg 8 is also the same, and acts similarly.

Next, the structure of the drainage part 18 is demonstrated with reference to FIG. FIG. 3 is a sectional view of the hot and cold water mixing and discharging apparatus 1.
As shown in FIG. 3, the drainage section 18 includes a drainage valve body 18a, a drainage valve body 18b slidably disposed in the drainage valve body 18a, and a drainage valve body that urges the drainage valve body 18b. It has a biasing spring 18c and a drain valve port forming member 18d on which the drain valve body 18b is seated. Further, the drainage portion 18 is provided in parallel with the currant 12 so as to communicate with the currant 12.

The drain valve main body 18a is a substantially cylindrical member, and a drain valve port forming member 18d is disposed on the tip side thereof.
The drain valve body 18b has a valve portion seated on the valve port of the drain valve port forming member 18d, and a valve shaft portion extending from the valve portion to the back side, and the valve shaft portion is axially moved by the drain valve body 18a. It is slidably supported on.
The drain valve body biasing spring 18c is disposed around the valve shaft portion of the drain valve body 18b, and biases the drain valve body 18b to the valve opening side (upward in FIG. 3) with a weak biasing force.

  With such a configuration, in the state where water discharge from the currant 12 is performed, the pressure in the water passage from the switching valve 16 to the currant 12 increases, so the drain valve body 18b is provided with a drain valve body. It is pushed down against the urging force of the urging spring 18c, and the valve port of the drain valve port forming member 18d is closed. Further, in the state where the water discharge from the currant 12 is stopped, the pressure in the water passage is reduced, so that the valve port of the drain valve port forming member 18d is opened by the biasing force of the drain valve body biasing spring 18c. It will be in a state where drainage is possible.

Next, with reference to FIG. 3 thru | or FIG. 5, the structure of the hot / cold water mixing temperature control apparatus and the switching valve incorporated in the faucet body will be described.
FIG. 4 is a perspective view of the hot and cold water mixing temperature controller and the switching valve. FIG. 5 is an exploded perspective view of the hot and cold water mixing temperature controller and the switching valve.

First, with reference to FIG. 3 thru | or FIG. 5, the structure of the hot / cold water mixing temperature control apparatus 20 is demonstrated.
As shown in FIG. 3, the hot and cold water mixing temperature adjusting device 20 is slidable in the first main body member 22, the second main body member 24 coupled to the first main body member 22, and the second main body member 24. , A sliding member 25 that slides the sliding sleeve 25, a feed screw 26 that is coupled to the hot water temperature adjusting dial 8, and a screw that is screwed into the feed screw 26. , And a sliding member 28 that slides within the first body member 22. Further, the hot and cold water mixing temperature adjusting device 20 includes a main valve body 30 that is movably disposed inside the first main body member 22, and a bias that is a biasing unit that biases the main valve body 30 in the right direction in FIG. A spring 32 and a temperature sensitive spring 34 which is a temperature sensitive urging means for urging the main valve body 30 in the left direction in FIG. 3 opposite to the bias spring 32 are provided. In the present embodiment, a coil spring made of a shape memory alloy is used as the temperature sensitive spring 34.

  As shown in FIGS. 3 and 5, the first main body member 22 has a substantially cylindrical shape and is coupled to the second main body member 24 located on the right side in FIG. 3. Further, the first main body member 22 is provided with a hot water inlet 22a for flowing hot water and a water inlet 22b for flowing water in the circumferential direction. Further, the left end surface of the hot water inlet 22 a in FIG. 3 is formed as a hot water side seat portion 22 c that comes into contact with the main valve body 30. Therefore, the hot water side sheet | seat part 22c forms a part of hot water inflow port 22a.

  The second main body member 24 has a substantially cylindrical shape, and is coupled to the first main body member 22 by receiving an end portion of the second main body member 24 at an end portion of the first main body member 22. The space inside the first main body member 22 and the second main body member 24 functions as a hot water mixing chamber 21 for mixing hot water and water flowing in from the hot water inlet 22a and the water inlet 22b.

  The sliding sleeve 25 has a substantially cylindrical shape, and is slidably disposed inside the second body member 24. Further, the distal end portion of the sliding sleeve 25 is formed as a water side seat portion 25 a that contacts the main valve body 30. For this reason, by sliding the sliding sleeve 25 relative to the second main body member 24, the distance between the hot water side sheet portion 22c and the water side sheet portion 25a can be changed. Further, a discharge port 25 b through which hot water mixed in the hot water mixing chamber 21 flows out is formed at the end of the sliding sleeve 25 opposite to the first main body member 22. The supplied water flows between the one end portion of the main valve body 30 and the water side seat portion 25a and flows into the hot water mixing chamber 21, so that the water side seat portion 25a forms a part of the water inlet. ing.

  The cam member 27 is an annular member and is rotatably disposed inside the second main body member 24. Further, the right end of the cam member 27 in FIG. 3 protrudes from the right end of the second main body member 24. A cam 27a is formed on the end surface of the cam member 27 on the sliding sleeve 25 side so as to change the height in the axial direction. On the other hand, a cam portion 25c is also formed on the end surface of the sliding sleeve 25 on the cam member 27 side, and the cam portion 25c slides with respect to the cam 27a. With this configuration, when the cam member 27 is rotated, the sliding sleeve 25 is moved in the axial direction. As will be described later, in the water stop state, the sliding sleeve 25 is slid to a position where both the hot water side seat portion 22c and the water side seat portion 25a simultaneously contact the main valve body 30, and the hot water inlet 22a and The water inlet 22b is closed. On the other hand, in the water discharge state, the slide sleeve 25 is slid so that the distance between the hot water side sheet portion 22c and the water side sheet portion 25a is longer than that in the water stop state.

  Thus, in the hot and cold water mixing and discharging apparatus 1 of the present embodiment, the water discharge and the water stop are switched by sliding the sliding sleeve 25, and the water discharge from the currant 12 and the water discharge from the shower head 14 are switched by the switching valve 16. It is done. Accordingly, the switching valve 16 and the sliding sleeve 25 function as a discharge water switching mechanism. Further, the hot water inlet 22a and the water inlet 22b are closed by the action of the sliding sleeve 25 and the cam member 27 sliding relative thereto, so that the sliding sleeve 25 and the cam member 27 function as an inlet valve drive mechanism. To do.

  The feed screw 26 is rotatably disposed inside the first main body member 22. A spline portion 26a to which the hot water temperature adjusting dial 8 is attached is formed at one end portion of the feed screw 26, and a feed male screw portion 26b to be screwed with the sliding member 28 is formed at the other end portion. ing.

  The sliding member 28 has a substantially cylindrical shape and is slidably disposed inside the first main body member 22. Further, an axial groove 28 a (FIG. 5) is formed outside the sliding member 28, and this groove 28 a is a protrusion (not shown) formed in the first body member 22 and extending in the axial direction. )), The rotation of the sliding member 28 relative to the first body member 22 is restricted. Further, inside the sliding member 28, a feed female screw portion 28 b that is screwed with the feed male screw portion 26 b of the feed screw 26 is formed. Accordingly, when the feed screw 26 is rotated, the sliding member 28 is slid in the axial direction of the first main body member 22.

  As shown in FIG. 5, the main valve body 30 is a substantially cylindrical valve body. A packing is integrally formed at both ends of the cylindrical main valve body 30 so as to come into contact with the hot water side seat portion 22c and the water side seat portion 25a, respectively.

  In addition, as shown in FIG. 3, an O-ring 42 is disposed on the outer periphery of the main valve body 30. The O-ring 42 is located between the outer peripheral surface of the main valve body 30 and the inner wall surface of the first main body member 22, and hot water and water flowing into the hot water mixing chamber 21 are mixed outside the main valve body 30. Is prevented.

  A legged spacer ring 46 is arranged on the water side of the O-ring 42 (the right side in FIG. 3). As shown in FIG. 5, the legged spacer ring 46 is a ring provided with six leg portions 46 a extending in the axial direction. The position of the O-ring 42 is regulated by the legged spacer ring 46 by the stepped spacer ring 46 and a step formed on the inner wall of the first main body member 22, and is positioned at a predetermined position in the first main body member 22. Is done.

  Further, as shown in FIGS. 3 and 4, a legged annular member 38, a rectifying member 39, a bias spring 32, a spring retainer 36, and a U-shaped bracket 44 are arranged on the left side of the main valve body 30. Has been. The legged annular member 38 is arranged such that its leg part comes into contact with the main valve body 30. The rectifying member 39 is a cylindrical member having one end narrowly closed, and is disposed so as to be received in the annular portion of the legged annular member 38. The spring retainer fitting 36 is a donut plate-like fitting with a raised central portion, and is connected to the rectifying member 39 by a U-shaped fitting 44. The bias spring 32 is sandwiched between the annular portion of the legged annular member 38 and the spring retainer 36 and is disposed inside the first main body member 22 in a compressed state. With this configuration, the bias spring 32 urges the main valve body 30 in the right direction in FIG. 3 when the sliding member 28 abuts against the spring retainer 36.

  As shown in FIG. 3, a mixing blade member 40 and a temperature sensitive spring 34 are disposed on the right side of the main valve body 30. The mixing blade member 40 is a substantially disk-shaped member and is slidably disposed inside the sliding sleeve 25. Further, the left end portion of the mixing blade member 40 in FIG. 3 is disposed so as to contact the main valve body 30, and the hot water and water flowing into the hot water mixing chamber 21 are mixed in this end portion so that the temperature is uniform. Radial blades 40a (FIG. 5) are provided. The left end of the temperature-sensitive spring 34 in FIG. 3 is in contact with the mixing blade member 40, and the right end is disposed in contact with the end of the inner wall surface of the sliding sleeve 25. With this configuration, the temperature-sensitive spring 34 biases the main valve body 30 in the left direction in FIG. 3 via the mixing blade member 40.

  On the other hand, cylindrical filters 52 and 54 are disposed outside the first main body member 22 so as to cover the hot water inlet 22a and the water inlet 22b, respectively. Inflow into the mixing temperature controller 20 is prevented.

Next, the configuration of the switching valve 16 will be described with reference to FIGS.
The switching valve 16 includes a switching valve main body 60, a packing pressing member 62 disposed inside the switching valve main body 60, a rotating cylinder 64 disposed rotatably inside the packing pressing member 62, and a switching for rotating the rotating cylinder 64. And a shaft member 66.

  The switching valve main body 60 is a substantially cylindrical member, and on its side surface, a currant outlet 60a that is a first valve port for flowing hot water mixed in the hot water mixing chamber 21 to the curran 12 side, and a shower head side A shower outlet 60b is provided as a second valve port that flows out into the outlet. As shown in FIG. 5, the currant outlet 60a and the shower outlet 60b are formed at positions shifted in the axial direction of the switching valve main body 60 and at positions shifted by a central angle of about 90 ° in the circumferential direction. Has been.

  The packing pressing member 62 is a thin cylindrical member, and is provided with openings at positions aligned with the currant outlet 60a and the shower outlet 60b, respectively. Packings 62a and 62b are fitted in these openings. Thereby, packing 62a, 62b is hold | maintained so that the circumference | surroundings of the Karan outflow port 60a and the shower outflow port 60b may each be surrounded.

  The rotating cylinder 64 is a cylindrical member, and is rotatably fitted inside the packing pressing member 62. A notch 64c is provided at the end of the rotary cylinder 64 on the hot water / water mixing temperature controller 20 side (left side in FIG. 3). The notch 64c is formed to receive a protrusion 27b (FIG. 5) provided on the cam member 27 protruding from the end of the second main body member 24. With this configuration, the cam member 27 and the rotary cylinder 64 are engaged, and the cam member 27 is rotated with the rotation of the rotary cylinder 64.

  Further, two sets of outflow openings 64 a and 64 b (only 64 b is shown in FIG. 5) are formed on the side surface of the rotating cylinder 64 at positions shifted in the axial direction of the rotating cylinder 64. Furthermore, each outflow opening 64a, 64b is formed at a position shifted by a predetermined angle in the circumferential direction. By rotating inside the packing holding member 62, the rotary cylinder 64 has a position where only the Karan outlet 60a and the outflow opening 64a communicate with each other, a position where only the shower outlet 60b and the outflow opening 64b communicate with each other, and a Karan outlet. The position where 60a and the shower outlet 60b communicate with the outflow openings 64a and 64b can be taken. In the switching valve 16 of the present embodiment, both the currant outlet 60a and the shower outlet 60b are not in communication with the outflow openings 64a and 64b. That is, in the switching valve 16 of the present embodiment, at least one of the currant outlet 60a and the shower outlet 60b is always in communication with the outlet openings 64a and 64b.

  The switching shaft member 66 is an elongated shaft member, and one end is attached to the end of the rotary cylinder 64 and the other end is attached to the spouting water switching handle 10 (FIG. 3). Thereby, when the spouting water switching handle 10 is rotated, the switching shaft member 66, the rotating cylinder 64, and the cam member 27 are rotated together.

Next, with reference to FIG. 3, the operation of the hot and cold water mixing temperature adjusting device 20 in the hot and cold water mixing and discharging apparatus 1 according to the first embodiment of the present invention will be described.
First, the user of the hot and cold water mixing and discharging apparatus 1 sets the hot water temperature adjusting dial 8 to a desired temperature. Here, when the hot water temperature adjusting dial 8 is set to the lowest temperature, the sliding member 28 is positioned at the left end in FIG. In this state, as shown in FIG. 3, since the sliding member 28 is separated from the spring retainer 36, the biasing force by the bias spring 32 does not act, and the left end of the main valve body 30 in FIG. The hot spring 34 is brought into contact with the hot water side sheet portion 22 c by the urging force of the thermal spring 34. That is, only the water can flow into the hot water mixing chamber 21.

  Next, when the user operates the hot water temperature adjusting dial 8 to rotate the feed screw 26 in order to increase the set temperature, the sliding member 28 is moved rightward in FIG. Is in contact with the spring retainer 36. As a result, the biasing force by the bias spring 32 also acts on the main valve body 30, and the main valve body 30 is moved to a position where the biasing force of the bias spring 32 and the biasing force of the temperature-sensitive spring 34 are balanced.

  When the main valve body 30 is moved, the hot water introduced from the hot water supply leg 4 flows into the hot water inlet 22 a via the filter 52, and the water introduced from the water supply leg 6 passes through the filter 54. Then flows into the water inlet 22b. Hot water flowing from the hot water inlet 22a passes between the main valve body 30 and the hot water side seat portion 22c and flows into the hot water mixing chamber 21, and water flowing from the water inlet 22b flows into the main valve body 30 and the water side seat. It flows into the hot water mixing chamber 21 through the portion 25a.

  The hot water that has flowed into the hot water mixing chamber 21 flows in the right direction in FIG. Further, the water flowing into the hot water mixing chamber 21 is mixed with hot water flowing through the main valve body 30 and flows out from the discharge port 25 b mainly through the inside of the temperature sensitive spring 34. At this time, mixing of hot water and water is promoted by the blade 40 a of the mixing blade member 40, and the mixture is mixed at a substantially uniform temperature and flows through the temperature-sensitive spring 34. Hot water that has flowed out from the discharge port 25 b passes through the switching valve 16 and is discharged from the currant 12 or the shower head 14.

  When the temperature of the hot water flowing inside the temperature-sensitive spring 34 is higher than the set temperature, the temperature-sensitive spring 34 acts to extend, so that the urging force by the temperature-sensitive spring 34 increases. Thereby, the position where the urging force by the temperature sensitive spring 34 and the urging force by the bias spring 32 are balanced moves to the left in FIG. 3, and the main valve body 30 moves to the left. As a result, the distance between the left end portion of the main valve body 30 and the hot water side seat portion 22c is shortened, and the distance between the right end portion of the main valve body 30 and the water side seat portion 24b is increased. The ratio of the water flowing into the water increases, and the temperature of the discharged hot water decreases. On the contrary, when the temperature of the hot water flowing inside the temperature-sensitive spring 34 is lower than the set temperature, the urging force by the temperature-sensitive spring 34 decreases, and the main valve body 30 is moved to the right in FIG. The temperature of the discharged hot water rises. By these actions, the temperature of hot water discharged from the currant 12 or the shower head 14 is adjusted to the set temperature.

Next, the operation of the switching valve 16 will be described with reference to FIG.
FIG. 6 is a graph in which the rotation angle of the spouting water switching handle is shown on the horizontal axis, and the water passage area (valve opening) of the switching valve and the hot and cold water mixing temperature adjusting device is shown on the vertical axis. In FIG. 6, the water passage area of the switching valve 16 is indicated by a broken line and a one-dot chain line, and the water passage area of the switching valve 16 is the water passage area (one-dot chain line) of the Karan outlet 60 a and the passage of the shower outlet 60 b. Consists of channel area (broken line). In FIG. 6, the water passage area of the hot water / mixing temperature controller 20 is indicated by a solid line, and the water passage area of the hot water / mixing temperature controller 20 is the sum of the water passage areas of the hot water inlet 22 a and the water inlet 22 b. I mean. Here, when the distance from the hot water side sheet | seat part 22c to the water side sheet | seat part 25a (FIG. 3) is equal to the axial direction length of the main valve body 30 (FIG. 3), the hot water inlet 22a and the water inlet 22b are It is closed and the water passage area of the hot and cold water mixing temperature controller 20 becomes zero. The sliding sleeve 25 is moved to the right side in FIG. 3, and the water passage of the hot and cold water mixing temperature adjusting device 20 becomes longer as the distance from the hot water side seat portion 22 c to the water side seat portion 25 a becomes longer than the axial length of the main valve body 30. The area increases.

  As shown in FIG. 6, when the angle of the discharge water switching handle 10 is 0 ° (center position), the cam portion 25c of the sliding sleeve 25 and the convex portion of the cam 27a of the cam member 27 (FIG. 5). The sliding sleeves 25 are moved to the leftmost side in FIG. In this state, since both ends of the main valve body 30 are in contact with the hot water side seat portion 22c and the water side seat portion 25a, respectively, the hot water inlet 22a and the water inlet 22b are closed. The sliding sleeve 25 is maintained at substantially the same position over the range of the rotation angle of the discharge water switching handle 10 about ± 5 ° centering on the state of the angle 0 °, and the main valve body 30 and the hot water side seat The part 22c and the water side sheet part 25a are maintained in a contact state. The slight movement of the sliding sleeve 25 in this angular range is absorbed by the elastic deformation of the packing formed at both ends of the main valve body 30, and the main valve body 30, the hot water side sheet portion 22c, and the water side seat portion. 25a is maintained in a contact state. Thereby, the hot water inlet 22a and the water inlet 22b are maintained in the closed state.

  On the other hand, as shown in FIG. 6, the currant outlet 60a and the shower outlet 60b in the switching valve 16 have an angle of about ± 5 ° centered on the rotation angle 0 ° of the spouting water switching handle 10. Both are kept open. However, as described above, in this angle range, the hot water inlet 22a and the water inlet 22b are in a closed state, so water discharge from the currant 12 and the shower head 14 is not performed, and the water is stopped.

  Further, when the discharge water switching handle 10 is rotated to the shower side by about + 5 ° or more, the currant outlet 60a is closed by the rotating cylinder 64 (one-dot chain line in FIG. 6), while the water passage area of the shower outlet 60b is closed. Increases (broken line in FIG. 6). The cam member 27 of the hot / cold water mixing temperature adjusting device 20 is rotated in conjunction with the rotation of the discharge water switching handle 10. Thereby, the convex part of the cam 27a comes into contact with the vicinity of the concave part of the cam part 25c of the sliding sleeve 25 (FIG. 5), and the sliding sleeve 25 is moved rightward in FIG. By moving the sliding sleeve 25, the water passage area of the hot and cold water mixing temperature controller 20 is secured. Thereby, the hot water and water flowing in from the hot water inlet 22a and the water inlet 22b are mixed in the hot water mixing chamber 21, flowed into the switching valve 16, and discharged from the shower head 14 through the shower outlet 60b.

  Further, when the spout water switching handle 10 is turned to the curran side by about −5 ° or more, the shower outlet 60b is closed by the rotating cylinder 64 (broken line in FIG. 6), while the water passage area of the currant outlet 60a is closed. Increases (the chain line in FIG. 6). In conjunction with the rotation of the spouting water switching handle 10, the convex portion of the cam 27a comes into contact with the vicinity of the concave portion of the cam portion 25c of the sliding sleeve 25. Moved in the direction. Thereby, the hot water and water mixed in the hot water mixing chamber 21 flow into the switching valve 16 and are discharged from the currant 12 through the currant outlet 60a.

  Next, when the spouting water switching handle 10 is returned to the vicinity of the center position (rotation angle range of about ± 5 °), the hot water inlet 22a and the water inlet 22b are closed to enter a water stop state, while the currant outlet 60a. And the shower outlet 60b will be in the open state. In this state, the water spray hole of the shower head 14 and the water outlet of the currant 12 are in communication with each other via the switching valve 16 (and the hot water mixing chamber 21 connected thereto). Further, as shown in FIG. 3, since the currant 12 and the drainage part 18 are always in communication with each other, the drainage part 18 is also in communication with the water spray holes of the shower head 14 and the hot water mixing chamber 21. Moreover, in the water stop state, since the pressure in the water passage from the switching valve 16 to the drainage portion 18 is reduced, the drainage valve body 18b of the drainage portion 18 is moved to the valve open position.

  In such a water stop state, the hot water remaining in the hot water mixing chamber 21 is discharged from the currant 12 and / or the drainage part 18 via the currant outlet 60a. At the same time, outside air is sucked into the hot water / mixing chamber 21 through the water spray holes of the shower head 14 and the shower outlet 60b.

Next, with reference to FIG. 7, the draining operation in the hot and cold water mixing and discharging apparatus according to the first embodiment of the present invention will be described.
FIG. 7 is a block diagram for explaining a water draining operation of the hot and cold water mixing and discharging apparatus 1 according to the present embodiment.
First, when draining water, the hot and cold water mixing and discharging apparatus 1 is set to the water-stopping state, and the water draining plugs (not shown) provided on the upstream side of the hot water supply leg 4 and the water supply leg 6 are arranged on the drain side. Manipulate. As a result, hot water and water remaining upstream of the hot water inlet 22a and the water inlet 22b are discharged, and outside air is introduced into the water passages via the intake valves 4a and 6a. Moreover, in the water stop state, as described above, the hot water inlet 22a and the water inlet 22b of the hot water mixing temperature controller 20 are closed, and the hot water in the hot water mixing chamber 21 of the hot water mixing temperature controller 20 is , Discharged from the currant 12 and / or the drainage section 18. Therefore, according to the hot and cold water mixing and discharging apparatus 1 of the present embodiment, all the draining operations are completed simply by operating a drain plug (not shown) to the drain side.

  According to the hot and cold water mixing and discharging apparatus 1 of the first embodiment of the present invention, when water is discharged from the hot and cold water mixing and discharging apparatus 1 in the water-stopped state, the hot water inlet 22a and the water inlet 22b are simply upstream. By simply operating a water drain plug (not shown) provided in the flow path to the water drain side, outside air is introduced into the flow path from the intake valves 4a and 6a, and water upstream of the hot water inlet 22a and the water inlet 22b. Unplugging is complete. On the other hand, on the downstream side of each inflow port, the hot water inflow port 22a and the water inflow port 22b are closed, and the hot water mixing chamber 21, the drainage unit 18, the currant 12 as the water discharge unit, and the shower head 14 in the water stop state. Therefore, the hot water remaining in the hot / cold water mixing chamber 21 is discharged from the drainage part 18 or the currant 12. As a result, it is not necessary to perform a special draining operation on the hot and cold water mixing and discharging apparatus 1, and draining can be performed very easily.

  Moreover, in the hot / cold water mixing and discharging apparatus 1 of this embodiment, the switching valve 16 provided in the downstream of the hot / cold water mixing chamber 21 is provided as a part of the discharging water switching mechanism, and this switching valve 16 is the hot water / water mixing chamber. 21, and a shower outlet 60 b for connecting the hot water mixing chamber 21 and the shower head 14. When the water is discharged from the Karan 12, only the Karan outlet 60 a is opened. At the time of water discharge from 14, only the shower outlet 60b is opened, and when switched to the water-stopped state, both the currant outlet 60a and the shower outlet 60b are opened. For this reason, with a simple structure, the hot water mixing chamber, the curan 12 as the first water discharger, and the shower head 14 as the second water discharger can be communicated with each other in the water stop state.

  Furthermore, the hot and cold water mixing and discharging apparatus 1 of the present embodiment includes a cam member 27 and a sliding sleeve 25 which are inlet valve driving mechanisms as part of the discharge water switching mechanism. The cam member 27 is interlocked with the switching valve 16 to slide the sliding sleeve 25 when the switching valve 16 is switched to the water stop state, and closes the hot water inlet 22a and the water inlet 22b. For this reason, it is possible to simultaneously close the hot water inlet 22a and the water inlet 22b and switch water discharged from the currant 12 or the shower head 14 by a single operation on the switching valve 16.

  Moreover, in the hot and cold water mixing and discharging apparatus 1 of the present embodiment, the hot and cold water mixing chamber 21 includes the hot water side sheet portion 22c that forms part of the hot water inlet 22a and the water side sheet portion that forms part of the water inlet 22b. 25a. Further, the main valve body 30 is slid between a position where it abuts on the hot water side sheet portion 22c and a position where it abuts on the water side sheet portion 25a, so that the hot water mixing chamber 21 is moved from the hot water inlet 22a and the water inlet 22b. It is comprised so that the quantity of the hot water and water which each flow in may be adjusted. The cam member 27 and the sliding sleeve 25 which are a part of the spouting water switching mechanism slide the water-side sheet portion 25a when the water-side sheet portion 25a is switched, so that the main valve body 30 is moved to the hot water-side sheet portion. The hot water inflow port 22a and the water inflow port 22b are closed by simultaneously abutting both the 22c and the water side sheet portion 25a. For this reason, each inlet can be closed, without providing the special valve body for closing the hot water inlet 22a and the water inlet 22b.

Next, with reference to FIG.9 and FIG.10, the hot-water mixing water discharging apparatus by 2nd Embodiment of this invention is demonstrated.
The hot and cold water mixing and discharging apparatus of the present embodiment differs from the first embodiment described above in the configuration of the hot water supply leg and the water supply leg, and the other configurations are the same as those in the first embodiment. Accordingly, here, only the portions of the second embodiment of the present invention that are different from the first embodiment will be described, and descriptions of similar portions will be omitted.

  FIG. 9 is a cross-sectional view of the hot water supply leg provided in the hot and cold water mixing and discharging apparatus of the present embodiment, showing a state in which the built-in intake valve is closed. FIG. 10 shows an enlarged view of the hot water supply leg shown in FIG. 9 in which the built-in intake valve is opened. In addition, since the water supply leg with which the hot-water mixing water discharging apparatus of this embodiment is equipped is the same structure as the hot-water supply leg, description is abbreviate | omitted.

As shown in FIGS. 9 and 10, the hot water supply leg 100 provided in the hot and cold water mixing and discharging apparatus of the present embodiment includes a supply leg main body 102, a stop cock 104 built in the supply leg main body 102, Have
The supply leg main body 102 is a hollow tubular member curved in a crank shape. A supply pipe connection portion 102a for connecting to a hot water supply pipe (not shown) is provided at the lower end portion of the supply leg main body 102 so as to protrude toward the wall surface side. A main body connection portion 102b for connecting to a faucet body (not shown in FIG. 9) is provided at the upper end of the supply leg main body 102 so as to protrude toward the faucet body. Further, on the opposite side of the supply pipe connecting portion 102a, a valve body receiving recess 102c communicating with the supply pipe connecting portion 102a for receiving the stop cock 104 is provided.

  The stop cock 104 is a unit in which a pressure adjustment function of a hot water supply pressure (supply water pressure), a stop cock function, and an intake valve function are integrated. The water stop valve 104 includes a water stop valve body 106, a pressure regulating valve body 108 disposed so as to surround the water stop valve body 106, and an intake valve body 110 disposed inside the water stop valve body 106. Have. Further, the stop cock 104 includes a valve body presser 112 for fixing the water stop valve body 106 to the supply leg main body 102, a pressure regulating valve biasing spring 114 that biases the pressure regulating valve body 108 in the valve opening direction, and an intake air An intake valve biasing spring 116 that biases the valve body 110 in the valve opening direction.

  The water stop valve body 106 is a substantially cylindrical member, and a male screw part 106a for opening and closing the water stop cock is provided at the tip of the water stop valve body 106, and the water stop valve body 106 is attached to the other end with a screwdriver or the like. Is provided with a notch 106b. Further, a flange portion 106 c for engaging the pressure regulating valve urging spring 114 is provided at an intermediate portion of the water stop valve body 106. A central bore 106 d for slidably receiving the intake valve body 110 is formed so as to penetrate the water stop valve body 106 along the central axis of the water stop valve body 106.

  The supply leg main body 102 is provided with a female screw portion 102 d for screwing the male screw portion 106 a of the water stop valve body 106. An annular packing 118 for a water stop valve is attached to the distal end side (the male screw portion 106a side) of the flange portion 106c. On the other hand, a sheet surface 102 e is formed at a position of the supply leg main body 102 facing the annular packing 118. With this configuration, when the water stop valve body 106 is rotated, the male screw portion 106a is screwed into the female screw portion 102d, and the water stop valve body 106 is moved toward the supply pipe connecting portion 102a. When the water stop valve body 106 is moved and the annular packing 118 abuts against the seat surface 102e, the flow path inside the supply leg main body 102 is closed and water is stopped.

  The pressure regulating valve body 108 is a thin stepped cylindrical member, and is slidably disposed with respect to the water stop valve body 106 so as to surround the water stop valve body 106. A pressure regulating valve biasing spring 114 is disposed between the water stop valve body 106 and the pressure regulating valve body 108. The pressure regulating valve urging spring 114 is a coil spring disposed so as to surround the water stop valve body 106, and the pressure regulating valve body 108 is disposed so as to surround the periphery thereof.

  Further, the pressure regulating valve body 108 is disposed so as to surround and contact the annular packing 118 attached to the water stop valve body 106, so that hot water (water) does not flow into the pressure regulating valve body 108. It has become. Further, the pressure regulating valve urging spring 114 is arranged so that one end thereof is in contact with the flange portion 106 c of the water stop valve body 106 and the other end is in contact with the step portion of the pressure regulating valve body 108. For this reason, the pressure regulating valve body 108 is urged by the pressure regulating valve urging spring 114 in a direction away from the seat surface 102e.

  The valve body presser 112 is an annular cap-shaped member, and is configured to fix the water stop valve body 106 to the valve body receiving recess 102 c of the supply leg main body 102. A male threaded portion 112 a is formed on the outer periphery of the distal end of the valve body retainer 112, and the male threaded portion 112 a is screwed into a female threaded portion provided on the supply leg main body 102, whereby the valve body retainer 112 is attached to the supply leg main body 102. Fixed. On the other hand, a stepped circular bore 112b is formed on the central axis of the valve body presser 112, and the pressure regulating valve body 108 is received therein. The pressure regulating valve body 108 is urged toward the valve body presser 112 by a pressure regulating valve urging spring 114, and the urging force presses the stepped portion of the pressure regulating valve body 108 against the stepped circular bore 112b. It has been.

  The intake valve body 110 is a stepped round bar-like valve body, and is disposed so as to be slidable in the axial direction within the central bore 106 d of the water stop valve body 106. Further, a taper portion is provided at an intermediate portion of the intake valve body 110, and an intake valve body packing 110a is attached to the taper portion. On the other hand, a tapered inner wall surface is also formed in the central bore 106d that receives the intake valve body 110, and the central bore 106d is closed and closed by the intake valve body packing 110a coming into contact with the tapered inner wall surface. To be spoken.

  An intake valve biasing spring 116 is disposed inside the center bore 106d, and this intake valve biasing spring 116 biases the tip of the intake valve body 110. The intake valve urging spring 116 is a weak spring, and urges the intake valve body 110 so that the intake valve body packing 110a of the intake valve body 110 is separated from the inner wall surface of the central bore 106d. Since the intake valve biasing spring 116 is a weak spring, the intake valve body packing 110a is caused by the pressure acting on the intake valve body 110 in a state where a normal water supply pressure is applied in the water passage of the supply leg main body 102. The intake valve body 110 is closed as shown in FIG. 9 in contact with the inner wall surface of the central bore 106d.

Next, the operation of the hot water supply leg 100 provided in the hot and cold water mixing and discharging apparatus of the present embodiment will be described. As described above, in this embodiment, the water supply leg (not shown) also has the same configuration as the hot water supply leg 100 and operates in the same manner as the hot water supply leg 100 except that water flows inside. To do.
First, when the spout water switching handle is operated to discharge water, hot water and water flow through the hot water supply leg 100 and the water supply leg (not shown), respectively. The hot water that has flowed in from the supply pipe connecting portion 102a flows in the supply leg main body 102 along the path indicated by the arrow in FIG. 9, and flows out from the main body connecting portion 102b. Hot water and water that have passed through the hot water supply leg 100 and the water supply leg (not shown) respectively flow into the hot water mixing chamber 21. Since the operation of the hot and cold water mixing and discharging apparatus after hot water and water flow into the hot and cold water mixing chamber 21 is the same as that of the first embodiment described above, description thereof is omitted.

  When the supply pressure from the supply pipe connecting portion 102a is high, the hot water flowing into the hot water supply leg 100 flows from the gap between the outer peripheral surface of the pressure regulating valve body 108 and the inner wall surface of the stepped circular bore 112b. The pressure in the annular gap 120 between the step portion of the pressure regulating valve body 108 and the step portion of the stepped circular bore 112b increases. As the pressure in the annular gap 120 increases, the pressure regulating valve body 108 moves in the direction of the seat surface 102e against the biasing force of the pressure regulating valve biasing spring 114 (the annular gap 120 widens). When the pressure regulating valve body 108 is moved toward the seat surface 102e, the gap between the tip of the pressure regulating valve body 108 (the seat surface 102e side) and the seat surface 102e becomes narrow, and the flow path of the flow through this gap Resistance increases. Thereby, the pressure of the hot water flowing out from the supply leg main body 102 is adjusted to a predetermined value. In addition, the pressure regulation valve with which the water supply leg (not shown) was equipped acts similarly.

  Further, when the supply of hot water and water to the faucet body 2 is stopped for the purpose of maintenance or the like, the water is stopped by the water stop valve body 106. That is, by inserting a screwdriver or the like into the notch 106b of the water stop valve body 106 and rotating it, the male screw portion 106a is screwed into the female screw portion 102d, and the water stop valve body 106 is moved toward the seat surface 102e. When the water stop valve body 106 is moved until the annular packing 118 comes into contact with the seat surface 102e, the water stop valve is closed and the flow path of the hot water supply leg 100 is closed. In addition, the water stop valve with which the water supply leg (not shown) was equipped acts similarly.

  Further, when draining water, the hot water / water mixing and discharging apparatus is stopped, and the hot water supply leg 100 and the water drain plug (not shown) provided on the upstream side of the water supply leg (not shown) are drained. To the side. Thereby, the inside of piping upstream from the hot water inlet 22a and the water inlet 22b becomes a negative pressure. When the pressure in the upstream pipe becomes negative, the pressure acting on the intake valve body 110 decreases, and the intake valve body 110 is changed from the state shown in FIG. It moves to the state shown in FIG. As a result, the intake valve body packing 110a is separated from the inner wall surface of the central bore 106d and the intake valve is opened. Further, the intake valve provided on the water supply leg (not shown) is similarly opened. When the intake valve is opened, the outside air flows into the pipe through the path indicated by the arrow in FIG. 10, and the hot water and water staying upstream of the hot water inlet 22a and the water inlet 22b are retained. Discharged. Therefore, according to the hot and cold water mixing and discharging apparatus of the present embodiment, all the draining operations are completed simply by operating a drain plug (not shown) to the drain side.

  According to the hot and cold water mixing and discharging apparatus of the second embodiment of the present invention, the intake valve can be provided compactly on the hot water supply leg and the water supply leg. In addition, according to the present embodiment, since the intake valve is integrated with the stop cock and the pressure regulating valve, the stop cock of the general-purpose hot water supply leg (water supply leg) is unitized including the intake valve. A hot and cold water mixing and discharging apparatus having a water draining function can be configured simply by replacing the water stop cock.

  In the second embodiment described above, the water stop cock is provided with the pressure regulating valve and the intake valve, but the water stop cock may be provided with only the intake valve. In the second embodiment described above, the intake valve body 110 is biased toward the valve opening side by the intake valve biasing spring 116, but the intake valve biasing spring biases the intake valve body toward the valve closing side. It can also be provided. In this case, the intake valve body is moved to the valve opening side due to the negative pressure generated in the pipe, and the outside air is introduced into the pipe. Alternatively, the member that urges the intake valve body can be omitted. In this case, the intake valve body is moved to the valve closing side by the supply water pressure acting on the pipe, and when the pressure in the pipe becomes negative, the intake valve body is moved to the valve opening side.

  As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the embodiment described above, the curan 12 is provided as the first water discharge unit, the shower head 14 is provided as the second water discharge unit, and the drainage unit 18 is provided. However, as a modification, the drainage unit 18 is omitted. be able to. In this case, when the hot and cold water mixing / discharging device 1 is set to the water-stopping state, the hot water in the hot / cold water mixing chamber 21 is discharged from one water discharge portion, and outside air is sucked from the other water discharge portion to mix hot water and water. The inside of the chamber 21 is drained. According to this modified example configured as described above, the present invention can be applied to the most common configuration of the hot and cold water mixing and discharging apparatus having a currant and a shower head without significant changes.

  In the above-described embodiment, the first water discharger includes the curan 12, the second water discharger includes the shower head 14, and the drainage unit 18. However, as a modification, the first water discharger or the first water discharger is provided. Either one of the two water dischargers can be omitted. In this case, when the hot and cold water mixing and discharging apparatus 1 is set to the water-stopping state, the hot water in the hot and cold water mixing chamber 21 is discharged from the drainage section 18 and outside air is sucked from the single water discharge section to mix hot and cold water. The inside of the chamber 21 is drained. Further, according to this modified example configured as described above, since the remaining water in the hot and cold water mixing chamber 21 is discharged from the drainage part 18, the hot water and the hot water are provided by providing the drainage part 18 at a position that is not easily noticeable by the user. Water can be drained without impairing the quality of the mixed water discharger 1.

DESCRIPTION OF SYMBOLS 1 Hot and cold water mixing and discharging apparatus according to the first embodiment of the present invention 2 Water faucet body 4 Hot water supply leg 4a Intake valve 6 Water supply leg 6a Intake valve 8 Hot water temperature adjustment dial 10 Discharge water switching handle 12 Karan (first discharge part) )
14 Shower head (second water discharge part)
DESCRIPTION OF SYMBOLS 16 Switching valve 18 Drain part 18a Drain valve body 18b Drain valve body 18c Drain valve body urging spring 18d Drain valve port forming member 19a Intake valve body 19b Intake valve body 19c Intake valve body urging spring 19d Intake valve port 20 Hot water mixing temperature Control device 21 Hot water mixing chamber 22 First main body member 22a Hot water inlet 22b Water inlet 22c Hot water side sheet portion 24 Second main body member 25 Sliding sleeve 25a Water side sheet portion 25b Discharge port 25c Cam portion 26 Feed screw 26a Spline portion 26b Male thread part 27 Cam member 27a Cam 27b Projection 28 Sliding member 28a Groove 28b Feed female thread part 30 Main valve element 32 Bias spring (biasing means)
34 Temperature-sensitive spring (temperature-sensitive biasing means)
36 Spring retainer bracket 38 Annular member with legs 39 Rectifying member 40 Mixing blade member 40a Blade 42 O-ring (elastic seal member)
44 U-shaped bracket 46 Spacer ring with legs 52 Filter 54 Filter 60 Switching valve body 60a Karan outlet (first valve port)
60b Shower outlet (second valve port)
62 Packing holding member 62a, 62b Packing 64 Rotating cylinder 64a, 64b Outflow opening 64c Notch 66 Switching shaft member 100 Hot water supply leg 102 Supply leg main body 102a Supply pipe connection part 102b Main body connection part 102c Valve body receiving recess 102d Female thread part 102e Seat surface 104 Water stop valve 106 Water stop valve body 106a Male thread portion 106b Notch 106c Hut portion 106d Center bore 108 Pressure regulating valve body 110 Intake valve body 110a Intake valve body packing 112 Valve body presser 112a Male thread portion 112b Stepped circular bore 114 Energizing pressure regulating valve Spring 116 Inlet valve biasing spring 118 Annular packing 120 Annular gap

Claims (7)

A hot and cold water mixing and discharging apparatus that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature,
A hot and cold water mixing chamber having a hot water inlet through which the supplied hot water flows in and a water inlet through which the supplied water flows in;
A main valve body for adjusting the amount of hot water and water flowing into the hot water mixing chamber from the hot water inlet and the water inlet, respectively;
An intake valve that is provided in each of the hot water inlet and the upstream channel of the water inlet, and sucks outside air into the channel when the pressure in the channel becomes negative,
A water discharger for discharging hot water mixed in the hot water mixing chamber;
When water discharge from the water discharge unit is stopped, a drainage unit capable of draining hot water in the hot water mixing chamber,
A discharge water switching mechanism for switching water discharge and water stop from the water discharge unit,
When the water stoppage switching mechanism is switched to a water stoppage state, the hot water inlet and the water inlet are closed, and the hot water mixing chamber, the drainage section, and the water discharge section are communicated with each other. Hot water and water mixing device. A hot and cold water mixing and discharging apparatus that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature,
A hot and cold water mixing chamber having a hot water inlet through which the supplied hot water flows in and a water inlet through which the supplied water flows in;
A main valve body for adjusting the amount of hot water and water flowing into the hot water mixing chamber from the hot water inlet and the water inlet, respectively;
An intake valve that is provided in each of the hot water inlet and the upstream channel of the water inlet, and sucks outside air into the channel when the pressure in the channel becomes negative,
A first water discharger for discharging hot water mixed in the hot water mixing chamber;
A second water discharger for discharging hot water mixed in the hot water mixing chamber;
A water discharge from the first water discharger, a water discharge from the second water discharger, and a water discharge switching mechanism that switches between water discharge and water stop,
When the water discharge switching mechanism is switched to a water stop state, the hot water inlet and the water flow inlet are closed, and the hot water mixing chamber is communicated with the first water discharge portion and the second water discharge portion. A hot and cold water discharge apparatus characterized by causing the water to mix.   The hot and cold water discharge apparatus according to claim 2, wherein the first water discharge part is constituted by a currant, and the second water discharge part is constituted by a shower head.   The discharge water switching mechanism includes a switching valve provided on the downstream side of the hot water mixing chamber, and the switching valve includes a first valve port for communicating the hot water mixing chamber and the first water discharge portion, and the hot water mixing. A second valve opening that communicates the chamber with the second water discharger, and only the first valve opening is opened when water is discharged from the first water discharger, and when water is discharged from the second water discharger. The hot and cold water mixing and discharging apparatus according to claim 2 or 3, wherein when only the second valve port is opened and switched to a water stop state, both the first valve port and the second valve port are opened. .   The discharge water switching mechanism further includes an inlet valve driving mechanism, and the inlet valve driving mechanism operates in conjunction with the switching valve when the switching valve is switched to a water stop state. The hot and cold water mixing and discharging apparatus according to claim 4, wherein the water inlet is closed.   The hot water mixing chamber includes a hot water side sheet portion that forms a part of the hot water inlet, and a water side sheet portion that forms a part of the water inlet, and the main valve body is connected to the hot water side seat portion. The amount of hot water and water flowing from the hot water inlet and the water inlet into the hot water mixing chamber is adjusted by sliding between the contact position and the water contact portion, respectively. When the water stoppage switching mechanism is switched to a water stop state, the main valve body is made to slide over the hot water side seat portion and the water side seat portion by sliding the hot water side seat portion or the water side seat portion. The hot and cold water mixing and discharging apparatus according to claim 1 or 2, wherein the hot water inlet and the water inlet are closed by simultaneously contacting both of the water side sheet portions.   And a hot water supply leg for supplying hot water to the hot water inlet and a water supply leg for supplying water to the water inlet. The hot water supply leg and the water supply leg are formed inside. The hot and cold water mixing and discharging apparatus according to any one of claims 1 to 6, wherein a stop cock is provided to close the flow path, and the intake valve is provided to each of the stop cocks.

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