JP2008240990A - Valve device for adjusting supply flow rate and combination faucet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve device for adjusting a supply flow rate capable of reducing the labor for execution of a combination faucet while enabling comfortable use of the combination faucet. <P>SOLUTION: A flow rate of hot water and a flow rate of water supplied to a temperature adjusting mechanism part are adjusted in the combination faucet. The combination faucet is provided with a valve case part (body 11) wherein a hot water in flow hole B1, a hot water out flow hole B3, a water in flow hole B2, and a water out flow hole B4 are opened in a valve chamber M; and a valve element part (valve element 12) having a hot water communication hole 12s connecting the water in flow hole B1 with the hot water out flow hole B3, and a water communication hole 12r connecting the water in flow hole B2 with the water out flow hole B4. In the valve chamber M, portions positioned on both sides of the valve element part are pressure chambers GC and GH, and a water communication flow passage RC connecting the water communication hole 12r with the one pressure chamber GC, and a hot water communication flow passage RH connecting the hot water communication hole 12s with the other pressure chamber GH are provided in the valve element part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a supply flow rate adjusting valve device and a hot and cold water mixing faucet provided with the supply flow rate adjusting valve device (supply flow rate adjusting valve device section).

  As shown in FIG. 17, the hot and cold water mixing faucet is referred to as a “flow rate adjusting mechanism unit with a water stop function” (hereinafter simply referred to as “flow rate adjusting mechanism unit”) on the secondary side of the “temperature adjusting mechanism unit 80”. ) 81 ”can be exemplified. (See Patent Document 1 and hereinafter referred to as “Conventional Example 1”). In the conventional example 1, a hot water supply unit (hot water supply port) 80H of the temperature control mechanism unit 80 is connected to a hot water supply source (hot water heater or the like) H using a hot water supply pipe 85, and a water supply unit ( The water supply port 80 </ b> C is connected to a water supply source (a terminal portion of a water supply source pipe) using a water supply pipe 86. Further, a water discharge means 87 such as a water discharge pipe and a shower device is disposed on the secondary side of the flow rate adjusting mechanism portion 81.

  Inside the temperature control mechanism 80, a "hot water supply side valve port 88H" communicating with the hot water supply unit 80H and a "water supply side valve port 88C" communicating with the water supply unit (water supply port) 80C are provided. A valve body 88B for adjusting the opening ratio (opening area ratio) of both valve ports 88H and 88C is disposed. And the hot water and water supplied to the temperature control mechanism 80 are in accordance with the opening ratio (opening area) of both valve ports 88H and 88C in the mixing chamber 88D located on the secondary side of both valve ports 88H and 88C. The mixture is mixed at a predetermined mixing ratio and mixed water at a predetermined temperature, and then discharged from the discharge portion 88J. When the water supply side valve port 88H is fully opened and the water supply side valve port 88C is fully closed, the hot water supplied from the hot water supply unit 80H is supplied from the discharge unit 88J at substantially the same temperature. When the water supply side valve port 88C is fully opened and the hot water supply side valve port 88H is fully closed, the water supplied from the water supply unit 80C is discharged at a substantially unchanged temperature. Discharged from.

  Further, in the hot and cold water mixing faucet according to the conventional example, “whether or not the hot water discharged from the discharge portion 88J of the temperature adjustment mechanism portion 80 is discharged from the water discharge means 87” is configured as the flow rate adjustment mechanism portion 81. It is selected by opening / closing the on-off valve 81a ". Further, by adjusting the opening degree (opening degree) of the on-off valve 81a, the “flow rate of hot water (water discharge amount)” discharged from the water discharge means 87 is selected. In the hot and cold water mixing faucet, the hot water supply pressure HP in the hot water supply pipe 85 is usually lower than the water supply pressure CP in the water supply pipe 86.

  On the other hand, in this kind of hot and cold water mixing faucet, it may be difficult to perform appropriate temperature adjustment in the temperature adjustment mechanism 80 due to a difference in installation environment or the like, and it may not be used comfortably. That is, in the hot and cold water mixing faucet, the “pressure ratio (pressure difference) between the hot water supply pressure HP of hot water supplied to the temperature control mechanism 80 and the water supply pressure CP of water supplied to the temperature control mechanism 80 is“ Assuming that it is a “specific value”, “a relationship between the opening ratio of the hot water supply side valve port 88H and the water supply side valve port 88C and the temperature of the hot water discharged from the water discharging means 88 (water discharge temperature)”. Is determined.

  However, in this kind of hot and cold water mixing faucet, when the pressure balance between the hot water supply pressure HP and the water supply pressure CP is disrupted according to the difference in the installation environment (for example, the difference in the number of floors in the apartment house, for example) There is a case where the difference becomes large). In such a case, for example, due to the influence of the pressure (hot water supply pressure HP) of the “high pressure side fluid (hot water)”, the smooth entry of the low pressure side fluid (water) into the temperature control mechanism 80 is blocked, This is because it is difficult to perform appropriate temperature adjustment in the temperature control mechanism 80.

In consideration of such circumstances, a “hot-water supply pressure control valve unit” is incorporated into a “hot-water supply stop cock unit” disposed at a terminal portion of the hot-water supply pipe 85, and a water supply pipe 86 is provided. Has been disclosed (see Patent Document 2, hereinafter referred to as “Conventional Example 1”). That said.)
Japanese Patent Laid-Open No. 11-181849 JP 2006-226497 A

  However, according to this conventional example 2, a hot water supply route (a route for supplying hot water from a hot water supply source to a hot water mixing faucet) and a water supply route (a route for supplying water from the water supply source to a hot water mixing faucet) It is necessary to incorporate a pressure regulating valve unit for each of the above. For this reason, it is necessary to adjust (set) the pressure regulating valve unit in each of the hot water supply path and the water supply path. Therefore, according to this conventional example 2, there is a possibility that the labor and time for maintenance of the hot and cold water mixing faucet and the labor for maintenance will increase.

  The present invention solves the above-mentioned problem, and a supply flow rate adjusting valve device capable of reducing the labor and time of construction of a hot and cold water mixing faucet while enabling the comfortable use of the hot and cold water mixing faucet, and such An object of the present invention is to provide a hot and cold water mixing faucet equipped with a simple supply flow rate adjusting valve device.

The supply flow rate adjusting valve device according to the invention of claim 1 comprises:
A temperature control mechanism unit that mixes hot water supplied through the hot water supply unit and water supplied through the water supply unit at a predetermined mixing ratio, and discharges it through the discharge unit;
A water discharge mechanism disposed on the secondary side of the temperature control mechanism and for selecting whether or not to discharge hot water discharged from the discharge unit;
A hot water / water mixing faucet comprising: a hot water supply to the temperature control mechanism and a flow rate of water supplied to the temperature control mechanism is adjusted on a primary side of the temperature control mechanism A supply flow rate adjusting valve device for
A valve chamber configured by using a space portion having a substantially circular cross section orthogonal to the axial center, a hot water inlet hole connected to a hot water source, a hot water outlet hole connected to the hot water source, and a water source A valve case portion provided in a state where a water inflow hole communicated with and a water outflow hole communicated with the water supply portion are opened in the valve chamber, and a substantially columnar body having a substantially circular cross section perpendicular to the axis. And is configured to be configured to be capable of performing sliding along the axial direction and rotation around the axial center, and is held in the valve chamber for communicating the hot water inflow hole and the hot water outflow hole. A valve body portion provided with a hot water communication hole, and a water communication hole for communicating the water inflow hole and the water outflow hole;
With
In the valve chamber, portions located on both sides along the axial direction of the valve body portion are respectively pressure chambers, and the valve body portion is configured to communicate the water communication hole with one pressure chamber. A hot water communication channel and a hot water communication channel for communicating the hot water communication hole with the other pressure chamber,
When the valve body portion is slid to increase the volume of the one pressure chamber and reduce the volume of the other pressure chamber, the degree of communication between the hot water inlet hole and the hot water outlet hole is increased, When the degree of communication between the water inflow hole and the water outflow hole is reduced and the valve body slides to reduce the volume of the one pressure chamber and expand the volume of the other pressure chamber, The degree of communication between the hole and the hot water outflow hole is reduced, and the degree of communication between the water inflow hole and the water outflow hole is increased.

  The supply flow rate adjusting valve device according to the first aspect of the invention functions as a pressure regulating valve. For this reason, by using this supply flow rate adjusting valve device, it is possible to obtain a “hot and cold water mixing faucet that can be used comfortably regardless of differences in installation environment”.

  That is, in the first aspect of the invention, for example, the “water supply pressure of water supplied to the supply flow rate adjusting valve device” is unexpectedly high, or “ “Supplying hot water pressure” is unexpectedly low, so “Supply when the balance between the water supply pressure of the water supplied to the supply flow control valve device and the hot water supply pressure of the hot water is disrupted” Among the “water supplied to the flow control valve device”, the “flow rate of water flowing into one pressure chamber (hereinafter referred to as“ water pressure chamber ”) through the water communication channel” is increased, The volume of the water pressure chamber is increased, and the volume of the other pressure chamber (hereinafter referred to as “hot water pressure chamber”) is reduced. As a result, the degree of communication between the hot water inflow hole and the hot water outflow hole is increased, and the degree of communication between the water inflow hole and the water outflow hole is reduced, so that the “pressure balance collapse” can be alleviated.

  Similarly, in the first aspect of the present invention, for example, the “water supply pressure of water supplied to the supply flow rate adjusting valve device” is unexpectedly low, or “hot water supplied to the supply flow rate adjusting valve device” is used. `` When the pressure balance between the water supply pressure of the water supplied to the supply flow rate adjustment valve device and the hot water supply pressure of the hot water is disrupted '', etc. Among the hot water to be supplied to the supply flow rate adjusting valve device, increase the flow rate of hot water flowing into the hot water pressure chamber through the hot water communication channel, and expand the volume of the hot water pressure chamber. At the same time, the volume of the “water pressure chamber” is reduced. As a result, the degree of communication between the hot water inflow hole and the hot water outflow hole is reduced, and the degree of communication between the water inflow hole and the water outflow hole is increased. .

  According to the invention of claim 1, this "adjustment of the pressure balance between the hot water supply pressure and the supply water pressure (relaxation of collapse of the pressure balance)" is performed using a common valve device (supply flow rate adjusting valve device). be able to. That is, according to the first aspect of the present invention, it is not necessary to provide separate pressure regulating means (pressure regulating valve or the like) for the hot water supply path and the water supply path. Therefore, according to the first aspect of the present invention, it is possible to reduce the labor required for the construction of the hot and cold water mixing faucet and the maintenance work while allowing the hot water and water faucet to be used comfortably.

  In the invention of each claim, the valve case portion is configured in a “substantially cylinder shape”, the valve body portion is configured in a piston shape, and the valve body portion is formed in the valve case portion (a valve configured by a substantially cylindrical space portion). A mode (hereinafter, referred to as “specific example 1”) that allows sliding in a room) can be exemplified. However, in this specific example 1, the outer shape of the valve case portion is not limited to a substantially cylindrical shape (substantially cylindrical shape), and may be, for example, a “substantially box shape (substantially rectangular parallelepiped shape, substantially cubic shape, etc.)”. Good. Further, in the first specific example, the radius of the cross section of the valve chamber (the cross section substantially orthogonal to the axial center) may be constant along the axial direction of the valve chamber, or may be stepped or tapered. It may change. Furthermore, in this specific example 1, the radius of the cross section of the valve body portion (cross section substantially perpendicular to the axis) may be constant along the axial direction of the valve body portion, or may be stepped or tapered. Or the like.

In this specific example 1, “the hot water communication hole and the water communication hole are provided so as to penetrate in the diameter direction of the valve body portion, and the hot water communication hole and the water communication hole The distance along the axial direction of the valve body portion is a first distance,
An opening on the secondary side of the hot water inflow hole and an opening on the secondary side of the water inflow hole are disposed at a position separated by a second distance along the axial direction of the valve body part, An opening on the primary side of the hot water outflow hole and an opening on the primary side of the water outflow hole are disposed at a position spaced apart from the second distance,
The first distance is shorter than the second distance;
When the valve body slides in one direction along the axial direction thereof, the volume of the one pressure chamber is enlarged, and the volume of the other pressure chamber is reduced, the hot water inlet hole and the hot water The degree of communication with the outflow hole is enlarged, the degree of communication between the water inflow hole and the water outflow hole is reduced, and the valve body part slides in the other direction along the axial direction, and the one pressure When the volume of the chamber is reduced and the volume of the other pressure chamber is increased, the degree of communication between the hot water inlet hole and the hot water outlet hole is reduced, and the degree of communication between the water inlet hole and the water outlet hole is reduced. It may be “expanded”.

The supply flow rate adjusting valve device of the invention of claim 2 is the supply flow rate adjusting valve device of claim 1,
When the valve body portion is rotated in one rotational direction, the degree of communication between the hot water inlet hole and the hot water outlet hole and the degree of communication between the water inlet hole and the water outlet hole are simultaneously expanded,
When the movable valve body is rotated in the other rotation direction, the degree of communication between the hot water inlet hole and the hot water outlet hole and the degree of communication between the water inlet hole and the water outlet hole are simultaneously reduced. It is characterized by that.

  According to the invention of claim 2, it is possible to obtain a hot and cold water mixing faucet that can be used comfortably in a “wide range of water discharge amount”. This point will be described with reference to FIG. That is, according to the conventional hot and cold water mixing faucet, when the flow rate is adjusted, the pressure (internal pressure) inside the temperature adjustment mechanism 80 changes unscheduled to “the temperature of hot water discharged from the water discharging means 87”. Unplanned changes may occur.

  That is, in the hot-water / water-mixing faucet, as described above, the hot-water supply pressure HP in the hot-water supply pipe 85 is generally lower than the hot-water supply pressure CP in the hot-water supply pipe 86. When the water discharge from the water discharge means 87 is stopped (when the hot and cold water mixing faucet is set to the water stop state), the on-off valve 81a is fully closed, so that the internal pressure of the temperature control mechanism 81 increases. To do. That is, in the temperature control mechanism 80, the flow path located on the secondary side thereof is closed (closed), and therefore the internal pressure of the temperature control mechanism 80 is substantially equivalent to “water supply pressure CP. Will rise to "pressure to do".

  On the other hand, when the “normal amount of hot water” is discharged from the water discharge means 87, the opening degree of the “open / close valve 81 a” is secured to some extent, and the inside of the temperature control mechanism 80 is opened to the outside by the water discharge means 87. Therefore, the internal pressure of the temperature control mechanism 80 is reduced (substantially reduced to atmospheric pressure). And in the temperature control mechanism part 80 which comprises this kind of hot-water and water mixing faucet, the setting is performed in consideration of the "frequently used water discharge state". That is, with reference to “when the normal amount of hot water is discharged by the water discharge means 88 and the internal pressure of the temperature control mechanism 80 is reduced”, the “water supply side valve port 88H and the water supply side valve port 88C A relationship between the opening ratio and the temperature of hot water discharged from the water discharge means 88 (water discharge temperature) is defined.

  However, in this type of hot and cold water mixing faucet, for example, when the amount of hot water discharged is narrowed down to a “slight amount”, the opening degree of the “open / close valve 81a” is a slight amount (approximate to a fully closed state). Therefore, the internal pressure of the temperature control mechanism 80 rises to substantially “pressure approximating the water supply pressure CP”. In this case, since the internal pressure of the temperature control mechanism 80 becomes higher than the hot water supply pressure HP, it is difficult to allow a necessary amount of hot water to enter the temperature control mechanism 80. For this reason, even if "the opening ratio between the hot water supply side valve port 88H and the water supply side valve port 88C" is set to "a specific value", there is a possibility that the "hot water having a temperature corresponding to the opening ratio" cannot be discharged. . That is, an unexpected amount (excessive amount) of water flows into the temperature control mechanism 80, and the temperature of the mixed water discharged from the discharge portion 88J of the temperature control mechanism 80 is the target temperature (set temperature). May change (become lower).

  Thus, in the conventional hot and cold water mixing faucet, when the flow rate is adjusted, “the flow rate of hot water supplied to the temperature control mechanism 80 and the flow rate of water supplied to the temperature control mechanism 80 are The “flow rate balance” deviates from the “preset flow rate balance”, and the temperature of the mixed water discharged from the temperature control mechanism 80 may change from the set temperature. Therefore, in the hot and cold water mixing faucet according to the conventional example, the user may be uncomfortable during use.

  On the other hand, in the invention of claim 2, the supply flow rate adjusting valve device (supply flow rate adjusting valve device) is arranged on the primary side (upstream side) of the temperature adjustment mechanism portion and supplied to the temperature adjustment mechanism portion. The flow rate of hot water and the flow rate of water supplied to the temperature control mechanism are simultaneously adjusted (controlled). For this reason, for example, even when “a small amount of hot water is discharged (hereinafter referred to as“ a case where a small amount of water is discharged ”)”, hot water supplied to the temperature adjustment mechanism unit on the primary side of the temperature adjustment mechanism unit. And the flow rate of water supplied to the temperature control mechanism can be reduced simultaneously. Therefore, even in the case of “a small amount of water discharge”, etc., since “the possibility that excessive amount of water flows into the temperature control mechanism” can be reduced, the “water discharge temperature is adjusted according to the adjustment of the water discharge flow rate”. It is possible to suppress the occurrence of unscheduled changes. Therefore, when the supply flow rate adjusting valve device according to the second aspect of the present invention is used, a hot and cold water mixing faucet that can be comfortably used can be obtained in a “wide range of water discharge amount”.

  Here, in the second aspect of the present invention, since the supply flow rate adjusting valve device is disposed on the primary side of the temperature adjustment mechanism unit, the flow rate adjustment function can be eliminated from the spouting water mechanism unit. . For this reason, “the amount of hot water discharged” and “the degree of opening and closing of the flow path on the secondary side of the temperature control mechanism” can be made irrelevant. For example, during hot water discharge, the internal pressure of the “temperature adjustment mechanism” is always constant by “releasing the secondary side of the temperature adjustment mechanism sufficiently to the atmosphere” regardless of the “water discharge amount”. Value or close to a constant value. In this case, since “the possibility that an excessive amount of water flows into the temperature control mechanism” can be further reduced in “when performing a very small amount of water discharge”, “with adjustment of the water discharge flow rate, etc. It is possible to more reliably suppress the “unscheduled change in the water discharge temperature”.

The supply flow rate adjusting valve device according to claim 3 is the supply flow rate adjusting valve device according to claim 2,
The rate of change when increasing or decreasing the flow rate of hot water supplied to the temperature control mechanism by rotating the valve body and the flow rate of water supplied to the temperature control mechanism by rotating the valve body The rate of change when increasing or decreasing is approximately equal.

  The invention of claim 3 shows a specific example of the invention of claim 2. According to the supply flow rate adjusting valve device of the third aspect of the present invention, in the supply flow rate increase control, the flow rate of hot water supplied to the temperature adjustment mechanism unit and the flow rate of water supplied to the temperature adjustment mechanism unit are the same. When the supply flow rate reduction control is performed, the flow rate of hot water supplied to the temperature control mechanism unit and the flow rate of water supplied to the temperature control mechanism unit are the same rate. Decrease. Therefore, it becomes much easier to set the pressure in the temperature control mechanism section to an appropriate value or to approach the appropriate value.

A supply flow rate adjusting valve device according to a fourth aspect of the present invention is the supply flow rate adjusting valve device according to any one of the first to third aspects,
The valve body portion is configured by connecting a hot water columnar portion including the hot water communication hole and a water columnar portion including the water communication hole.

  In invention of Claim 4, since the valve body part is made into a division | segmentation type, the versatility of a valve body part is improved. For example, “a plurality of hot water columnar portions with different sizes of hot water communication holes” or “a plurality of water columnar portions with different sizes of water communication holes” is prepared. And, depending on the characteristics of the hot and cold water mixing faucet to be applied and the installation situation of the hot and cold water mixing faucet, it is possible to use a combination of a suitable hot water column and a suitable water column. is there. For example, on the upper floor of an apartment where the water supply pressure tends to be low, the use of the “water column having a large water communication hole size” makes it possible to cope with this low water supply pressure accurately.

The supply flow rate adjusting valve device according to claim 5 is the supply flow rate adjusting valve device according to any one of claims 1 to 4,
In the middle of the hot water supply path connecting between the hot water supply source and the hot water inlet hole, a stop tap on the hot water supply side is disposed, and in the middle of the water supply path connecting between the water supply source and the water inlet hole Is characterized in that a water stop cock is provided on the water supply side.

  According to the invention of claim 5, enforcement, maintenance and the like of the supply flow rate adjusting valve device are facilitated. In other words, since the supply flow rate adjusting valve device is disposed on the secondary side of the stop cock, the supply flow adjusting valve device can be smoothly operated and maintained by closing the stop cock. Can be done.

The hot and cold water mixing faucet of the invention of claim 6
A temperature control mechanism unit that mixes hot water supplied through the hot water supply unit and water supplied through the water supply unit at a predetermined mixing ratio, and discharges it through the discharge unit;
A water discharge mechanism disposed on the secondary side of the temperature control mechanism and for selecting whether or not to discharge hot water discharged from the discharge unit;
A supply flow rate adjusting valve disposed on the primary side of the temperature control mechanism unit for controlling the flow rate of hot water supplied to the temperature control mechanism unit and the flow rate of water supplied to the temperature control mechanism unit A device section;
A hot and cold water faucet comprising:
The supply flow rate adjusting valve device part is:
A valve chamber configured by using a space portion having a substantially circular cross section orthogonal to the axial center, a hot water inlet hole connected to a hot water source, a hot water outlet hole connected to the hot water source, and a water source A valve case portion provided in a state where a water inflow hole communicated with and a water outflow hole communicated with the water supply portion are opened in the valve chamber, and a substantially columnar body having a substantially circular cross section perpendicular to the axis. And is configured to be configured to be capable of performing sliding along the axial direction and rotation around the axial center, and is held in the valve chamber for communicating the hot water inflow hole and the hot water outflow hole. A valve body portion provided with a hot water communication hole, and a water communication hole for communicating the water inflow hole and the water outflow hole;
With
In the valve chamber, portions located on both sides along the axial direction of the valve body portion are respectively pressure chambers, and the valve body portion is configured to communicate the water communication hole with one pressure chamber. A hot water communication channel and a hot water communication channel for communicating the hot water communication hole with the other pressure chamber,
When the valve body portion is slid to increase the volume of the one pressure chamber and reduce the volume of the other pressure chamber, the degree of communication between the hot water inlet hole and the hot water outlet hole is increased, When the degree of communication between the water inflow hole and the water outflow hole is reduced and the valve body slides to reduce the volume of the one pressure chamber and expand the volume of the other pressure chamber, The degree of communication between the hole and the hot water outflow hole is reduced, and the degree of communication between the water inflow hole and the water outflow hole is increased.

  The invention of claim 6 relates to a hot and cold water mixing faucet provided with the supply flow rate adjusting valve device part (supply flow rate adjusting valve device) of the invention of claim 1, and obtains the same effect as the invention of claim 1. be able to.

  The supply flow rate adjusting valve device part (supply flow rate adjusting valve device) constituting the hot and cold water mixing faucet of the invention of claim 6 comprises the features of any one of claims 2 to 5. May be. When this supply flow rate adjusting valve device part (supply flow rate adjusting valve device) has the features of the invention of claim 2, “exclude the flow rate adjusting function from the spout water mechanism part” It is possible to more reliably suppress the occurrence of unscheduled changes in temperature.

  In this specification, “mixed water” means “hot water (hot water supplied from a hot water source)” and “hot water” generated by mixing water (water supplied from a water source). Point to. In addition, “hot water” in the present specification indicates a general term for “fluid” handled by a hot and cold water mixing faucet. That is, (1) hot water supplied from a hot water supply source (hot water in which no water is mixed), (2) water supplied hot water source (hot water in which no hot water is mixed), and (3) hot water supply It is a general term for hot water supplied from a source and mixed water generated by mixing water supplied from a water supply source.

  In the present specification, various aspects of the “temperature control mechanism” can be selected, and various mixing valves (temperature control mechanism) such as a thermostat type, a sliding disk type, and a two-handle type can be exemplified. In the present specification, various modes of the “water discharge mechanism” can be selected, and water discharge valves such as a push button type, a sliding disk type, a handle type, and an electromagnetic type can be exemplified. Further, in the present specification, the “water discharge mechanism” may have a switching function for switching the water discharge flow path. That is, in the case where the hot water / water mixing faucet to be applied includes a plurality of water discharge means (for example, water discharge pipes and shower facilities), the water discharge means used together with the selection of the water discharge by the “water discharge mechanism”. May be selected.

  In this specification, it does not matter whether the supply flow rate adjusting valve device unit (supply flow rate adjusting valve device) has a water stop function or not. The ease of use of the stopper is improved. This is because the use of the hot and cold water faucet is improved when the lid is provided with only one portion (water discharge mechanism portion) having a water stop function. Further, in this specification, it does not matter whether or not the water stop mechanism has a flow rate adjustment function, but by eliminating the flow rate adjustment function from the water stop mechanism part, the structure of the water stop mechanism part Simplification can be achieved.

  As described above, according to each of the first to fifth aspects of the present invention, the supply flow rate adjusting valve device that can reduce the time and labor required for the construction of the hot and cold water mixing faucet while enabling comfortable use of the hot and cold water mixing faucet. Can be obtained. According to the invention of claim 6, it is possible to obtain a hot and cold water mixing faucet that can reduce the labor and time of construction while enabling comfortable use.

  Next, the best mode of the present invention (hereinafter referred to as “example”) will be described in detail with reference to the drawings.

  As shown in FIG. 1, the hot and cold water mixing faucet S according to the present embodiment includes a supply flow rate adjusting valve device 10, a temperature adjusting valve device 30, a spout water valve device 50, and a currant 60. ing.

  As shown in FIG. 2, the supply flow rate adjusting valve device 10 includes a body 11, a valve body 12, a spindle 15, and a flow rate adjusting handle 13.

  The body 11 constitutes a specific example of the “valve case portion”, and the outer shape thereof is a substantially rectangular parallelepiped as shown in FIGS. 2 and 3. The body 11 includes a first side surface portion 11a, a second side surface portion 11b, a third side surface portion 11c, and a fourth side surface portion 11d. Further, the first side surface portion 11 a and the second side surface portion 11 b are in a front-back relationship along the longitudinal direction of the body 11, and the third side surface portion 11 c and the fourth side surface portion 11 d are in the body 11. There is a front-back relationship along the short direction.

  The body 11 has a substantially cylindrical shape. That is, as shown in FIG. 3, the body 11 includes a space portion 11 e that “is penetrated along the longitudinal direction and is opened at the first side surface portion 11 a and the second side surface portion 11 b”. ing. This space part 11e is a substantially cylindrical space part, and is in a state in which the axial center coincides with the “axial center along the longitudinal direction of the body 11”.

  As shown in FIG. 3, on one end side of the body 11 (near the end portion on the second side surface portion 11b side), a mounting portion whose inner diameter is increased stepwise (hereinafter referred to as “first mounting portion”). .) 111 is provided. In other words, a step portion D1 that changes the inner diameter in a step shape is provided on one end side of the body 11, and the “part located in the body 11 between the step portion D1 and the second side surface portion 11b” 1 is a mounting portion 111. In addition, an internal thread portion 111 b is provided on the inner wall surface of the first mounting portion 111, and a contact surface 111 c that faces the outside of the body 11 is formed on the step portion D 1. The contact surface 111c has a substantially ring shape.

  As shown in FIG. 2, a support member 18 having a “lid shape with a flange” is screwed into the first mounting portion 111. The support member 18 includes a male screw portion 18b that can be screwed into the female screw portion 111b of the first mounting portion, and has one end surface (a surface facing the outside of the body 11) at the axial center position, and A “support hole 18 c” that penetrates the other end surface (a surface that faces the outside of the body 11) is provided. In addition, the “part on the other end face side of the support member 18” is depressed in a substantially disc shape to form a recess 18d. When the support member 18 is screwed into the first mounting portion 111, the substantially disc-shaped “retaining prevention” is formed by the recess 18 d and the contact surface 111 c that seals the opening of the recess 18 d. A space portion 18e "is formed. Note that the “detaching space portion 18e” is provided to prevent the “spindle 15” described later from coming off.

  As shown in FIG. 3, on the other end side of the body 11 (near the end portion on the first side surface portion 11a side), a mounting portion whose inner diameter is increased in a stepped shape (hereinafter referred to as “second mounting portion”). 114) is provided. A female screw portion 115 is provided on the inner wall surface of the second mounting portion 114, and the male screw portion 116b of the lid member 116 is screwed into the female screw portion 115 (see FIG. 2). The lid member 116 includes a flange portion 116a in addition to the male screw portion 116b, and a seal member (packing) 116c is attached to a portion serving as a boundary between the flange portion 116a and the male screw portion 116b. When the lid member 116 is screwed into the female screw portion 115, the other end portion side of the space portion 11e (close to the end portion on the first side surface portion 11a side) is sealed. At this time, the water tightness between the lid member 116 and the body 11 is ensured by the seal member (packing) 116c.

  As shown in FIGS. 2 and 3, the valve chamber M is configured by a portion of the space 11 e of the body 11 excluding “the first mounting portion 111 and the second mounting portion 114”. The valve chamber M has a circular cross section perpendicular to the axis. That is, the valve chamber M is configured by a substantially cylindrical space. However, in the invention of each claim, the inner diameter of the valve chamber M may be constant along the axial direction, and changes to a stepped shape, a tapered shape, or the like at an intermediate portion along the axial direction. May be.

  As shown in FIG. 3, the body 11 is provided with a through hole 11 f for hot water inflow and a through hole 11 g for water inflow in a state where the third side surface portion 11 c and the valve chamber M open. The through holes 11 f and 11 g are provided at a predetermined interval along the longitudinal direction of the body 11, and the direction of the axis is directed to the short direction of the body 11.

  Further, the body 11 is provided with a hot water outflow through hole 11j and a water outflow through hole 11k in a state where the fourth side surface portion 11d and the valve chamber M open. Further, these through holes 11 j and 11 k are also provided at predetermined intervals along the longitudinal direction of the body 11, and the direction of the axial center is directed to the short direction of the body 11.

  Further, the hot water inflow through hole 11f and the hot water outflow through hole 11j are aligned along the short direction of the body 11, and the water inflow through hole 11g and the water outflow through hole 11k are also formed in the body. 11 are aligned along the short direction. And all the through-holes 11f, 11g, 11j, and 11k change the internal diameter to the level | step difference shape in the intermediate position along an axial center direction. That is, in these through holes 11f, 11g, 11j, and 11k, the portion on the side close to the valve chamber M is a “small-diameter portion having a small inner diameter”, and the portion on the side away from the valve chamber M is It is said to be a large large diameter part. In any of the through holes 11f, 11g, 11j, and 11k, a female thread portion is provided on the inner wall portion of the large diameter portion.

  As shown in FIG. 3, the large diameter portion of the hot water inflow through hole 11f constitutes a hot water inflow connection port L1, and the small diameter portion of the hot water inflow through hole 11f constitutes the hot water inflow hole B1. ing. Among these, the terminal part (end part of the secondary side) of the hot water supply pipe 1H is connected (screwed) to the connection port L1 for hot water inflow (see FIG. 1). Note that the start end (primary end) of the hot water supply pipe 1H is connected to a hot water supply source (a hot water heater, not shown), and the terminal side of the hot water supply pipe 1H is connected to the hot water supply side. A stop cock 2H is interposed.

  As shown in FIG. 3, the large diameter portion of the water inflow through hole 11g constitutes a water inflow connection port L2, and the small diameter portion of the water inflow through hole 11g constitutes a water inflow hole B2. ing. Among these, the terminal part (end part of the secondary side) of the water supply pipe 1W is connected (screwed) to the connection port L1 for water inflow (see FIG. 1). The starting end (primary side end) of the water supply pipe 1W is connected to a water supply source, and a water stop cock 2W is interposed on the terminal side of the water supply pipe 1W.

  As shown in FIG. 3, the large diameter portion of the hot water outflow through hole 11j constitutes a hot water outflow connection port L3, and the small diameter portion of the hot water outflow through hole 11j constitutes the hot water outflow hole B3. ing. Among these, the start end portion (primary end portion) of the auxiliary hot water supply pipe 3H is connected (screwed) to the hot water outflow connection port L3 (see FIG. 1). Note that the terminal portion of the auxiliary hot water supply pipe 1H is connected to a hot water supply port 30H of a temperature regulating valve device 30 described later.

  As shown in FIG. 3, the large diameter portion of the water outflow through hole 11k constitutes a water outflow connection port L4, and the small diameter portion of the water outflow through hole 11k constitutes a water outflow hole B4. ing. Among these, the start end portion (primary end portion) of the auxiliary water supply pipe 3W is connected (screwed) to the connection port L4 for water outflow (see FIG. 1). Note that the terminal portion of the sub-water supply pipe 1W is connected to a water supply port 30C of a temperature control valve device 30 described later.

  The valve body 12 constitutes a specific example of the valve body portion, and has a substantially piston shape as shown in FIG. That is, the shape of the cross section (cross section perpendicular to the axis) of the valve body 12 is circular. Further, as shown in FIGS. 4 and 5, the valve body 12 is connected and integrated with the hot water columnar portion 12 </ b> A and the water columnar portion 12 </ b> B. Further, a spindle 15 is interposed between the valve body 12 and the flow rate adjusting handle 13, and when the flow rate adjusting handle 13 is rotated, the valve body 12 rotates integrally with the spindle 15. To do. However, in the invention of each claim, the outer diameter of the valve body 12 may be constant along the axial direction, or may change to a stepped shape, a tapered shape, or the like at an intermediate portion along the axial direction. May be.

  The total length (length along the axial direction) of the valve body 12 is shorter than “the length along the axial direction of the valve chamber M” (see FIG. 2 and the like). Further, in the valve body 12, a first sealing groove 12m, a second sealing groove 12n, and a third sealing groove 12p are located at a middle position along the axial direction. It is provided in a circular shape. That is, the first sealing groove 12m, the second sealing groove 12n, and the third sealing groove 12p are spaced at a predetermined distance from one end side to the other end side of the valve body 12. Is provided.

  Further, in the valve body 12, a water communication hole 12r is provided at a portion located between the first sealing groove 12m and the second sealing groove 12n, and the second sealing groove 12n A hot water communication hole 12s is provided at a portion located between the third sealing groove 12p. The water communication hole 12r and the hot water communication hole 12s are provided so as to pass through in the radial direction (diameter direction) of the valve body 12, and the shapes of the “openings formed on both ends” are substantially circular. ing.

  Further, the axial centers of the water communication hole 12r and the hot water communication hole 12s are parallel to each other, and the “interval between the water communication holes 12r and the hot water communication hole 12s” is “the hot water inflow hole B1 and It is narrower than the “interval between the central portions of the water inflow hole B2” (see FIG. 2).

  In addition, in the water communication hole 12r, the hot water communication hole 12s, the hot water inflow hole B1, the water inflow hole B2, the hot water outflow hole B3, and the water outflow hole B4, there are openings corresponding to each other (overlapping k). The opening) has the same shape and the same size. That is, “the primary side opening of the hot water communication hole 12 s and the secondary side opening of the hot water inflow hole B 1”, “the secondary side opening of the water communication hole 12 r, and the water inflow hole B 2. "Secondary side opening", "secondary side opening of hot water communication hole 12s, and primary side opening of hot water outflow hole B2", "secondary side opening of water communication hole 12r" And the opening on the primary side of the water outflow hole B4 ”have the same shape (substantially circular) and the same size.

  As shown in FIGS. 2 and 4, the valve body 12 includes a water communication channel RC and a hot water communication channel RH. Further, the water communication channel RC and the hot water communication channel RH are configured using “a substantially cylindrical space portion in which the axis is aligned with the axis of the valve body 12”. The water communication channel RC is a channel for opening the water communication hole 12r at the “one end surface T1 of the valve body 12”. The hot water communication channel RH is a channel for opening the hot water communication hole 12s at the “other end surface T2 of the valve body 12”.

  That is, the water communication channel RC is formed along the axial direction of the valve body 12 while having a substantially circular cross section (cross section perpendicular to the axial center), and one end portion is the one end surface T1 of the valve body 12. While being opened, the other end is joined to the water communication hole 12r. The hot water communication channel RH is formed along the axial direction of the valve body 12 while having a substantially circular cross section (cross section perpendicular to the axial center), and the other end joins the hot water communication hole 12s. The other end is opened at the other end surface T2 of the valve body 12.

  As shown in FIG. 5, the valve body 12 is divided into two parts: a portion including the water communication hole 12r (water columnar portion 12B) and a portion including the hot water communication hole 12s (water columnar portion 12A). . That is, “a portion constituting one end side of the valve body 12 while including the water communication hole 12r, the first seal groove 12m, the second seal groove 12n, and the water communication channel RC. The water columnar portion 12B is configured, and “the third seal groove 12p, the hot water communication hole 12s, and the hot water communication flow path RH are included, and the other end portion side of the valve body 12 is configured. The hot water columnar portion 12A is configured by the “part to be performed”.

  Further, as shown in FIG. 5, the one end surface 121A of the hot water columnar portion 12A and the other end surface 121B of the water columnar portion 12B are formed in a substantially circular shape and can be brought into contact with each other. Further, on one end surface 121A of the hot water columnar portion 12A, a connecting groove portion 122A opens in a substantially rectangular shape, and on the other end surface 121B of the water columnar portion 12B, a connecting projection portion 122B protrudes. Then, the hot water columnar portion 12A and the water columnar portion 12B are integrated by bonding and welding the one end surface 121A and the other end surface 121B while fitting the connecting projection portion 122B into the connecting groove portion 122A. Has been. Since the vertical and horizontal widths of the groove 122A and the protrusion 122B are different, the hot water columnar part 12A and the water columnar part 12B are aligned around the axis by fitting the protrusion 122B to the groove 122A. Will be.

  As shown in FIGS. 6A and 6B, locking grooves 12 y and 12 z are provided at positions near the one end face T <b> 1 of the valve body 12 so as to be continuous with the water communication channel RC. . These locking grooves 12y and 12z open in a substantially rectangular shape at one end face T1 of the valve body 12, and open in a substantially rectangular shape toward the water communication channel RC. Further, both the locking grooves 12y and 12z are arranged on the same line along the diameter direction of the water communication channel RC, and are in a state of facing the axial center of the valve body 12 on both sides.

  As shown in FIG. 4, the spindle 15 is formed in a substantially cylindrical shape, and a male serration 15c is formed on the outer peripheral surface on one end side. Further, the spindle 15 has an attachment hole 15h opened at one end surface, and a female screw portion 15i is formed on the inner wall of the attachment hole 15h. Further, from the other end portion of the spindle 15, a locking projection 15k having a substantially rectangular plate shape protrudes. The axial center of the locking projection 15k is aligned concentrically with the axial center of the spindle 15. Further, a flange portion 15f protrudes from the outer peripheral portion on the other end side of the spindle 15 in a substantially ring shape. The flange portion 15f is used for preventing the spindle 15 from coming off. In addition, a circumferential groove 15g is formed in an intermediate portion of the spindle 15, and a sealing member (packing) P is attached to the circumferential groove 15g.

  As shown in FIG. 4B, the valve body 12 of the present embodiment includes a seal member (packing) in the first seal groove 12m, the second seal groove 12n, and the third seal groove 12p. ) After P is mounted, it is inserted into the valve chamber M as shown in FIG. At this time, the sealing member (packing) P attached to each of the sealing grooves 12m, 12n, and 12p contacts the inner wall portion (valve chamber M) of the body 11 in a watertight manner.

  When the valve body 12 is inserted into the valve chamber M, as shown in FIG. 2, the hot water inflow hole B1 and the hot water outflow hole B3 are connected to the seal member (packing) P mounted in the third sealing groove 12p. The both sides are sandwiched by the seal member (packing) P mounted in the second sealing groove 12n. The water inflow hole B2 and the water outflow hole B3 include a seal member (packing) P attached to the second seal groove 12n, and a seal member (packing) P attached to the first seal groove 12m. It will be in the state where both sides were sandwiched by.

  In this embodiment, as described above, (1) the length along the axial direction of the valve body 12 is made shorter than the length along the axial direction of the valve chamber M, and (2 ) The valve body 12 has a substantially piston shape. For this reason, the valve body 12 inserted into the valve chamber M can be rotated around the axis of the valve body 12 (the axis of the valve chamber M), and the axis of the valve body 12 (the valve chamber M). In the valve chamber M is slidable (slidable) along the direction of the axial center.

  That is, the valve body 12 slides in the valve chamber M, and as shown in FIG. 9, the distance between the one end surface T1 and the flange portion 15f is increased (the other end surface T2 and the lid member 116 10 and a state in which the distance between the one end face T1 and the flange portion 15f is reduced (the distance between the other end face T2 and the lid member 116 is increased), as shown in FIG. Status).

  The spindle 15 is mounted as follows. That is, as shown in FIG. 2, the spindle 15 is mounted on the support member 18 by being inserted into the support hole 18c so as to be rotatable. This mounting operation is performed by inserting the spindle 15 into the support hole 18c from the other end surface side of the support member 18, and is completed when the flange portion 15f enters the recess 18d. Then, when the support member 18 is screwed into the first mounting portion 111, the mounting of the spindle 15 to the body 11 is completed, and the spindle 15 is supported by the support member 18 in a rotatable state. Further, at the time of mounting, the locking protrusion 15k is inserted “between the opposing locking grooves 12y and 12z” (see FIG. 6). Further, the watertightness between the spindle 15 and the support member 18 is ensured by the seal member (packing) P of the circumferential groove 15g. Further, when this mounting is completed, the flange portion 15f is housed in the “prevention space portion 18e”, so that “prevention of the spindle 15 from the support member 18” is achieved.

  When the mounting of the spindle 15 is completed, as shown in FIG. 6A, “the portion of the locking projection 15k positioned on one edge side along the diameter direction of the spindle 15” is held by one locking groove 12y. (The portion located on the other end edge side in the diameter direction of the spindle 15 in the locking projection 15k) is held in the other locking groove 12z (the pinched state). Wearing state). When the valve body 12 slides in the valve chamber M, the locking grooves 12y and 12z are relatively displaced (slid) with reference to the locking projection 15k. Regardless of the sliding position along the center direction), the locking projection 15k is maintained inserted between the pair of locking grooves 12y and 12z. For this reason, irrespective of the sliding position of the valve body 12, the “state in which the locking protrusions 15k are held by the locking grooves 12y and 12z (the state in which they are sandwiched)” is maintained.

  As shown in FIG. 2, a flow rate adjusting handle 13 is attached to one end portion of the spindle 15 so as to be integrally rotatable. At the time of mounting, the serration 15 c is serrated to the “female serration 13 c” of the flow rate adjusting handle 13. Further, the flow rate adjusting handle 13 is fixed to the spindle 15 by a screw 15e screwed into the mounting hole 15h. When a turning operation is performed on the flow rate adjusting handle 13, turning force (torque) generated in the spindle 15 is transmitted to the valve body 12 through the locking protrusion 15 k. For this reason, when the turning operation is performed on the flow rate adjusting handle 13, the valve body 12 rotates around its axis (based on the axis).

  Further, in the valve chamber M, portions located on both sides along the axial direction of the valve body 12 are respectively pressure chambers GC and GH. Among these, the pressure chamber (hereinafter referred to as “water pressure chamber”) GC formed between the one end face T1 of the valve body 12 and the flange portion 15f is used for water via the water communication channel RC. It communicates with the communication hole 12r. Further, a pressure chamber (hereinafter referred to as “hot water pressure chamber”) GH formed between the other end surface T2 of the valve body 12 and the lid member 116 communicates with hot water via the hot water communication channel RH. It communicates with the hole 12s. And if the valve body 12 slides to the one end side of the valve chamber M, the volume of the water pressure chamber GC will be reduced and the volume of the hot water pressure chamber GH will be expanded (refer FIG. 10). On the other hand, when the valve body 12 slides to the other end side of the valve chamber M, the volume of the water pressure chamber GC is expanded and the volume of the hot water pressure chamber GH is reduced (see FIG. 9). The water pressure chamber GC constitutes a specific example of “one pressure chamber”, and the hot water pressure chamber GH constitutes a specific example of “the other pressure chamber”.

  In this supply flow rate adjusting valve device 10, the one end surface T 1 of the valve body 12 constitutes a “pressure receiving surface for receiving the water pressure of the water pressure chamber GC”, and the other end surface T 2 of the valve body 12 is “the pressure for hot water”. A pressure receiving surface for receiving the water pressure of the chamber GH is formed. In this embodiment, by adjusting the area and the like of these pressure receiving surfaces, or by selecting the opening area of each hole (12r, 12s, B1, B2, B3, B4), the formation location, etc., the following The settings are as follows.

  In other words, the “water supply pressure CP of the water supplied through the water supply pipe 1C” is “scheduled water supply pressure (the water supply pressure scheduled by the contractor etc.) P1” and “the hot water supply pressure of the hot water supplied through the hot water supply pipe 1H”. When “HP” is “on-demand hot water supply pressure (hot water supply pressure scheduled by a contractor or the like) P2”, and the value obtained by dividing “water supply pressure CP” by “hot water supply pressure HP” is “P1 / P2”. In addition, as shown in FIG. 8, the volume of the water pressure chamber GC and the volume of the hot water pressure chamber GH are set to a predetermined ratio (for example, 1: 1).

  That is, when the value of “water supply pressure CP / hot water supply pressure HP” is “P1 / P2”, the “operation position along the axial direction of the valve chamber M” of the valve body 12 is the following “neutral position”. Is set to be. This “neutral position” refers to “a portion located between the axial center of the water communication hole 12r and the axial center of the hot water communication hole 12s”, “the axial center of the hot water inlet hole B1, and the water inlet hole B2. It is an “operation position” to be aligned with the “part located in the middle”.

  When the “operating position of the valve body 12” is the “neutral position”, “the degree of communication between the water inlet hole B2 and the water outlet hole B4” and “the degree of communication between the hot water inlet hole B1 and the hot water outlet hole B3”. Are made equal. Therefore, a value obtained by dividing “water supply pressure P11 of water flowing out from the water outflow hole B4” by “hot water supply pressure P21 of hot water flowing out from the hot water outflow hole B3”, that is, “P11 / P21” is “P1 / P2 "is maintained.

  On the other hand, the “pressure balance between the water supply pressure CP and the hot water supply pressure HP” is lost, and the value (CP / HP) obtained by dividing the “water supply pressure CP” by the “hot water supply pressure HP” is “P1 / P2” described above. The flow rate of water flowing into the water pressure chamber GC through the water communication hole 12r and the water communication channel RC becomes (b) the hot water communication hole 12s and the hot water communication channel RH. The flow rate of the hot water flowing into the hot water pressure chamber GH is relatively increased. For this reason, as shown in FIG. 9, the valve body 12 slides so as to increase the volume of the water pressure chamber GC and reduce the volume of the hot water pressure chamber GH.

  In this case, the amount of eccentricity between “the position of the axial center of the water communication hole 12r” and “the position of the axial center of the water inflow hole B2 (water outflow hole B4)” increases, and “the axial center of the hot water communication hole 12s”. And the “position of the axial center of the hot water inflow hole B1 (hot water outflow hole B3)” is reduced. Thereby, “the degree of communication between the hot water inflow hole B1 and the hot water outflow hole B3” is expanded, and “the degree of communication between the water inflow hole B2 and the water outflow hole B4” is reduced. That is, the water supply side flow path (the flow path including the water inflow hole B2, the water communication hole 12r, and the water outflow hole B4) in the main supply flow rate adjusting valve device 10 is narrowed, and the main supply flow rate adjusting valve device 10 is. The flow path on the hot water supply side (the flow path including the hot water inflow hole B1, the hot water communication hole 12s, and the hot water outflow hole B3) is opened.

  Therefore, the valve body 12 operates so as to relatively reduce (suppress) the “water supply pressure P11 of water flowing out from the water outflow hole B4”. Therefore, the value (P11 / P21) obtained by dividing the “water supply pressure P11 of the water flowing out from the water outflow hole B4” by the “hot water supply pressure P21 of the hot water flowing out from the hot water outflow hole B3” is “P1 / P2”. It will approach.

  Further, the “pressure balance between the water supply pressure CP and the hot water supply pressure HP” is broken, and the value (CP / HP) obtained by dividing the “water supply pressure CP” by the “hot water supply pressure HP” is smaller than the aforementioned “P1 / P2”. (A) The flow rate of water flowing into the water pressure chamber GC through the water communication hole 12r and the water communication channel RC is changed to (b) hot water through the hot water communication hole 12s and the hot water communication channel RH. It becomes relatively smaller than the flow rate of hot water flowing into the pressure chamber GH. For this reason, as shown in FIG. 10, the valve body 12 slides to reduce the volume of the water pressure chamber GC and to increase the volume of the hot water pressure chamber GH.

  In this case, the amount of eccentricity between “the position of the axial center of the water communication hole 12r” and “the position of the axial center of the water inflow hole B2 (water outflow hole B4)” is reduced, and “the axial center of the hot water communication hole 12s”. The amount of eccentricity between “the position of” and “the hot water inflow hole B1 (the position of the axial center of the hot water outflow hole B3)” increases. Thereby, the “degree of communication between the hot water inflow hole B1 and the hot water outflow hole B3” is reduced, and the “degree of communication between the water inflow hole B2 and the water outflow hole B4” is expanded. That is, the water supply side flow path (the flow path including the water inflow hole B2, the water communication hole 12r, and the water outflow hole B4) in the supply flow rate adjusting valve device 10 is opened, and the supply flow rate adjusting valve device 10 is opened. The flow path on the hot water supply side (the flow path including the hot water inflow hole B1, the hot water communication hole 12s, and the hot water outflow hole B3) is narrowed.

  Therefore, the valve body 12 operates to relatively reduce (suppress) the “hot water supply pressure P21 of hot water flowing out from the hot water outflow hole B3”. For this reason, the value (P11 / P21) obtained by dividing the water supply pressure P11 of the water flowing out of the water outflow hole B4 by the hot water supply pressure P21 of the hot water flowing out of the hot water outflow hole B3 approaches “P1 / P2”. .

  Further, in the supply flow rate adjusting valve device 10, when the flow rate adjusting handle 13 is rotated, the valve body 12 is rotated. Further, as shown in FIGS. 7A and 7B, the hot water inflow hole B1 and the hot water outflow hole B3 can always communicate with each other through the hot water communication hole 12s, and the water inflow hole B2 and the water The outflow hole B4 can always communicate with the water communication hole 12r.

  That is, in this supply flow rate adjusting valve device 10, when the flow rate adjusting handle 13 (valve element 12) is rotated in one rotational direction, as shown in FIG. The degree of communication with the hole B3 and the degree of communication between the water inflow hole B2 and the water outflow hole B4 are simultaneously expanded at the same rate of change (enlargement rate) (that is, the supply flow rate adjusting valve device 10 is , “Supply flow rate increase control” is executed). Further, when the flow rate adjusting handle 13 (valve element 12) is rotated in the other rotational direction, as shown in FIG. 7B, the degree of communication between the hot water inlet hole B1 and the hot water outlet hole B3, and the water inlet hole. The degree of communication between B2 and the water outflow hole B4 decreases at the same time and at the same rate of change (decrease rate) (that is, the supply flow rate adjusting valve device 10 executes “supply flow rate reduction control”. ).

  The supply flow rate adjusting valve device 10 regulates the rotation range of the valve body 12 by regulating means K1, K2, and the hot water inflow hole B1 and the hot water outflow hole B3 are always in communication with each other, and the water inflow hole B2 And the water outflow hole B4 are always in communication. That is, when the flow rate adjusting handle 13 is rotated in one rotation direction, the degree of communication between the hot water inlet hole B1 and the hot water outlet hole B3 is maximized, and the degree of communication between the water inlet hole B2 and the water outlet hole B4 is maximum. Then, the regulating means K1 acts. For this reason, it is not possible to further increase the “rotational operation amount of the flow rate adjusting handle 13 in one rotational direction”. When the flow rate adjusting handle 13 is rotated in the other rotational direction, the degree of communication between the hot water inlet hole B1 and the hot water outlet hole B3 is minimized, and the degree of communication between the water inlet hole B2 and the water outlet hole B4 is minimized. Then, the restricting means K2 acts. For this reason, it is not possible to further increase the “rotational operation amount of the flow rate adjusting handle 13 in the other rotational direction”.

  The temperature control valve device 30 constitutes a specific example of the temperature control mechanism, and is disposed on the secondary side of the supply flow rate adjusting valve device 10 as shown in FIG. As shown in FIG. 11, the temperature control valve device 30 includes a body 30A, a device main body 30B inserted into the body 30A, and a temperature control handle G.

  The body 30A includes a hot water supply port 30H, a water supply port 30C, and a discharge port 30J (see FIG. 1). Here, the hot water supply port 30H constitutes a specific example of the hot water supply unit, the water supply port 30C constitutes a specific example of the water supply unit, and the discharge port 30J constitutes a specific example of the discharge unit. Moreover, the recessed part for comprising the water chamber 31w and the hot water chamber 31h is provided in the inner wall part of the body 30A. The hot water chamber 31h is connected to the hot water supply port 30H (see FIG. 1), and the water chamber 31w is connected to the water supply port 30C (see FIG. 1). The discharge port 30J is connected (screwed) to the start end (primary end) of the communication pipe 5 (see FIG. 1). Furthermore, the terminal part of this connection pipe 5 is connected to the intake port 50a of the valve apparatus 50 for the spout water mentioned later (refer FIG. 1).

  The apparatus main body 30B is configured by arranging a temperature setting unit 35 and a thermostat unit 36 in series. Among these, the temperature setting unit 35 includes a fixed cylinder 35a, a movable cylinder 35b, a temperature adjustment operation shaft 35c, and a stopper 35d. The fixed cylinder 35a and the movable cylinder 35b are screw-fitted, and the movable cylinder 35b can be screwed in the fixed cylinder 35a. Further, the movable cylinder 35b and the temperature adjustment operation shaft 35c are serrated and fitted so that both can rotate integrally. The stopper 35d has a front end pressed by two large and small coil springs 35e and 35f, and a back end pressed by a retaining C-ring 35g. And the side that is spaced apart). In the temperature setting unit 35, when the temperature control handle G is rotated, the movable cylinder 35b slides to the left and right while rotating. At this time, the stopper 35d also slides to the left and right in conjunction with the movable cylinder 35b and moves to a desired position.

  The thermostat portion 36 includes a thermo housing 36a, a thermo element 36b, a mixing valve 36c, and a support cylinder portion 36d. Among these, the thermo housing 36a is configured using a cylindrical body whose outer diameter is reduced in a stepped shape toward the rear end. Furthermore, a water valve port 36j connected to the water chamber 31w and a hot water valve port 36k connected to the hot water chamber 31h are provided on the inner peripheral surface. A lid 36m having an insertion hole is attached to the opening on the front end side. Further, the rear end portion of the thermo housing 36a communicates with the discharge port 30J.

  The thermo element 36b is inserted into the thermo housing 36a, and includes a tubular portion 36q and a temperature sensitive portion 36t on both sides of the wide flange portion 36p. The temperature sensing portion 36t is filled with a wax that expands and contracts as the temperature changes, and the piston 36r protrudes and retracts from the tip of the tubular portion 36q as the wax expands and contracts. . Further, the distal end side of the tubular portion 36q passes through the insertion hole of the lid body 36m and is exposed to the outside of the thermo housing 36a. The tip of the piston 36r is in contact with the back surface of the stopper 35d. The mixing valve 36c has a substantially cylindrical outer shape, and a shaft insertion portion 36s is disposed at the axial position. And it is attached to the base side of this tubular part 36q, inserting the tubular part 36q through the shaft insertion part 36s.

  The support cylinder portion 36d is configured using a substantially cylindrical body in which the outer diameter on the front end side is reduced in a tapered shape and the outer diameter on the rear end side is reduced in a stepped shape. And the thermoelement 36 is elastically supported in the state where the temperature sensing part 36t is inserted inside. In other words, the front end surface of the support cylinder portion 36d is connected to the back surface of the flange portion 36p, and the front end of the return spring 36v contacts the circumferential step portion 36u on the rear end side in a compressed state. The rear end of the return spring 36v is pressed by a C ring 36z disposed on the inner wall surface on the rear end side of the thermo housing 36a. For this reason, the mixing valve 36c is integrated with the thermo element 36b, and is urged in the direction of expanding the hot water valve port 36k.

  The inclined wall portion 361d on the front end side of the support cylinder portion 36d is provided with a hot water passage hole (not shown). For this reason, while the water flowing in from the water valve port 36j and the water flowing in from the hot water valve port 36k are appropriately mixed, the inner peripheral surface of the support cylinder portion 36d and the outer peripheral surface of the temperature sensing portion 36t are passed through the hot water passage hole. Flows into the flow path formed between the two, that is, the hot and cold mixing flow path Y, and flows into the discharge port 30J.

  In the temperature control valve device 30 described above, the temperature control handle G is rotated, the stopper 35d is made to reach a position corresponding to the set temperature, and the reference surface at the tip of the piston 36r is set. When a deviation occurs between the temperature of the hot water passing through the hot water / mixing flow path Y and the set temperature, the wax in the temperature sensing portion 36t expands and contracts as appropriate. As a result, the amount of protrusion and withdrawal of the piston 36r is adjusted, the mixing valve 36c slides right and left integrally with the thermo element 36, the opening ratio of the water valve port 36j and the hot water valve port 36k is corrected, and the temperature of the hot water becomes the set temperature. Kept. Moreover, in this temperature control valve device 30, the flow rate of hot water reaching the hot water supply port 30H through the auxiliary hot water supply pipe 3H and the flow rate of water reaching the water supply port 30C through the auxiliary water supply pipe 3W increase or decrease simultaneously. To do.

  The water stop valve device 50 constitutes a specific example of the water stop mechanism and is disposed on the secondary side of the temperature control valve device 30 as shown in FIG. This water stop valve device 50 is a so-called “pilot-type water stop valve”, and selects the water stop without adjusting the water discharge amount. Further, as shown schematically in FIG. 12, the water discharge valve device 50 includes an intake port 50a and an intake port 50b. The intake port 50b includes “a curran 60 that constitutes a specific example of water discharge means”. Is connected.

  As shown in FIG. 12, the water valve device 50 includes a body 51, a rod 50L, a pilot valve body 50P, a return spring (coil spring) 53, a main valve body 56, and a pilot valve body holding mechanism. (Not shown), an operation button 55, a support spring (coil spring) 55B, and a button support 57 are provided. The intake port 50a and the intake port 50b are provided in the body 51.

  The operation button 55 includes a main body portion 55a and a protruding portion 56b that protrudes from the lower surface of the main body portion 55a. Further, the button support 57 is provided with a support surface 57a configured in a substantially ring shape in plan view so as to be directed upward. The supporting spring 55B is “in a state where the protruding portion 56b is inserted in the axial direction, the upper end portion is brought into contact with the peripheral side portion of the lower surface of the main body portion 55a, and the lower end portion is brought into contact with the supporting surface 57a”. The water stop valve device 50 is disposed. When the upper surface portion of the main body portion 55a is pressed downward, the operation button 55 moves downward while opposing the urging force of the support spring 55B, but the operator presses the upper surface portion of the main body portion 55a. When the operation button 55 is stopped, the operation button 55 returns to the position before the operation by the biasing force of the support spring 55B.

  The rod 50L is disposed immediately below the projecting portion 56b, and aligns the position of the projecting portion 56b and the axis concentrically. Further, the lower end portion of the rod 50L and the pilot valve body 50P are integrated. Further, an upward biasing force is applied to the “integrated product of the rod 50L and the pilot valve body 50P” by the return spring 53. When the “integrated product of the rod 50L and the pilot valve body 50P” is moved upward by the urging force of the return spring 53, the upper end portion of the rod 50L and the lower end portion of the protruding portion 56b come into contact with each other ( (See FIG. 12). An example of the pilot valve body holding mechanism (not shown) is a diversion of a “holding mechanism provided on a knock-type ballpoint pen”. Further, unlike the present embodiment, the rod 50L may be electrically driven up and down, and in this case, an electrical holding mechanism may be employed.

  A valve seat portion 51 </ b> D is provided in a portion located below the main valve body 56 in the body 51. Further, the main valve element 56 is a so-called “diaphragm type” valve element, and is disposed inside the body 51 at a position located above the valve seat portion 51D. The main valve body 56 is provided with a pilot valve port 56a in a substantially central portion and a small hole 56s on the outer peripheral side. The main valve body 56 is seated on the valve seat portion 51D or detached from the valve seat portion 51D to open and close the valve seat portion 51D.

  Inside the body 51, a portion above the main valve body 56 is a back pressure chamber 51P. Further, a portion located at the primary side end of the valve seat portion 51D is connected to the aforementioned intake port 50a, and a portion located at the secondary side end portion of the valve seat portion 51D is referred to as the aforementioned outlet port 50b. Have been contacted.

  In the hot and cold water mixing tap S, the opening / closing state of the valve seat 51D is alternately switched every time the “operation button 55 of the valve device 50 for water discharge” is pressed, and the water discharge state and the water stop state are alternated. To be realized. That is, every time the operation button 55 is pressed, a state in which the pilot valve body 50P is seated on the pilot valve port 56a and a state in which the pilot valve body 50P is detached from the pilot valve port 56a are alternately realized. The open state and the closed state are alternately realized, and the hot water discharge from the currant 60 and the water stop are realized alternately.

  That is, when the state of the hot and cold water mixing tap S is changed from the water discharge state (the state shown in FIG. 12) to the water stop state (the state shown in FIG. 13), the operation button 55 is pressed downward. Thereby, the rod 50L and the pilot valve body 50P are pressed downward, and the pilot valve body 50P is seated on the pilot valve port 56a. At this time, the pilot valve body holding mechanism (not shown) is operated, and the state where the pilot valve body 50P is seated on the pilot valve port 56a is held.

  Thus, when the pilot valve body 50P is seated on the pilot valve port 56a, the hot water flowing into the back pressure chamber 51P through the small hole 56s is accumulated in the back pressure chamber 51P, and the pressure in the back pressure chamber 51P is increased. That is, “the hot water flowing into the back pressure chamber 51P through the small hole 56s” cannot be “passed through the pilot valve port 56a to the secondary side of the valve seat portion 51D”, so the pressure in the back pressure chamber 51P increases. To do. Therefore, as shown in FIG. 13, the main valve body 56 is seated on the valve seat portion 51D, and the state of the hot and cold water mixing tap S is changed to a water stop state.

  On the other hand, when the state of the hot and cold water mixing tap S is changed from the water stop state to the water discharge state, the operation button 55 is pressed downward, and the upper end portion of the rod 50L is pressed by the lower end portion of the protruding portion 56b. Thereby, the operation of the pilot valve body holding mechanism (not shown) is released, and the pilot valve body 50P is detached from the pilot valve port 56a. As a result, “hot water in the back pressure chamber 51P” comes out to the secondary side of the valve seat portion 51D through the pilot valve port 56a, and the pressure in the back pressure chamber 51P decreases. For this reason, the main valve body 56 is detached from the valve seat portion 51D, and the state of the hot and cold water mixing tap S is changed to the water discharge state.

  In the hot and cold water mixing tap S of the present embodiment, by operating the temperature control handle G, “the temperature of hot water to be discharged from the currant 60 (water discharge temperature)” is set. By operating the flow rate adjusting handle 13, the flow rate of hot water supplied to the temperature control valve device 30 and the flow rate of water supplied to the temperature control valve device 30 are simultaneously controlled. Thereby, the “flow rate of hot water to be discharged from the currant 60 (discharge flow rate)” is controlled. Further, when the operation buttons 55 are sequentially pressed, the hot and cold water mixing tap S alternately realizes the water discharge state and the water stop state.

  The supply flow rate adjusting valve device 10 of this embodiment functions as a pressure regulating valve. For this reason, by using this supply flow rate adjusting valve device 10, it is possible to obtain “a hot and cold water mixing faucet S that can be used comfortably regardless of differences in installation environment”.

  That is, in the present embodiment, for example, “the water supply pressure CP of water supplied from the water supply source C to the supply flow rate adjusting valve device 10” is unexpectedly high, or “ When the “hot water supply pressure HP of hot water to be supplied to the valve device 10” is unexpectedly low, the “supply flow rate adjusting valve device 10 is changed when the“ pressure balance between the hot water supply pressure CP and the hot water supply pressure HP ”is broken. Among the “water supplied to the water”, the “flow rate of water flowing into the water pressure chamber GC through the water communication channel RC” is increased, the volume of the water pressure chamber GC is increased, and The volume of the pressure chamber GH is reduced. As a result, the degree of communication between the hot water inflow hole B1 and the hot water outflow hole B3 is increased, and the degree of communication between the water inflow hole B2 and the water outflow hole B4 is reduced. be able to.

  Further, in the present embodiment, for example, the “water supply pressure CP” is unexpectedly low or the “hot water supply pressure HP” is unexpectedly high, so that the “pressure balance between the water supply pressure CP and the hot water supply HP” is set. When collapse occurs, among the “hot water supplied to the supply flow rate adjusting valve device 10”, the “flow rate of hot water flowing into the hot water pressure chamber GH through the hot water communication channel RH” is increased. The volume of the “hot water pressure chamber GH” is increased and the volume of the “water pressure chamber GC” is reduced. As a result, the degree of communication between the hot water inflow hole B1 and the hot water outflow hole B3 is reduced, and the degree of communication between the water inflow hole B2 and the water outflow hole B4 is increased. be able to.

  Furthermore, according to the present embodiment, this “adjustment of the pressure balance between the hot water supply pressure HP and the supply water pressure CP” is performed using a single valve device (supply flow rate adjusting valve device 10). That is, it is not necessary to dispose separate pressure regulating means (such as a pressure regulating valve) in the hot water supply path and the water supply path. Therefore, according to the present embodiment, it is possible to reduce the labor and time of maintenance of the hot and cold water mixing faucet S while performing “comfortable use of the hot and cold water mixing faucet S”.

  Further, in the hot water and water mixing tap S, the supply flow rate adjusting valve device 10 is disposed on the primary side of the temperature adjustment valve device 30, and the flow rate of hot water and the flow rate of water supplied to the temperature adjustment valve device 30 are set. Adjust (control) at the same time. For this reason, for example, even when performing a very small amount of water discharge, on the primary side of the temperature regulating valve device 30, the flow rate of hot water supplied to the temperature regulating valve device 30 and the flow rate of water can be decreased simultaneously.

  In addition, by providing the supply flow rate adjusting valve device 10 on the primary side of the temperature control valve device 30, the flow rate adjusting function can be eliminated from the spout water valve device 50. For this reason, when the main hot / cold water faucet S is in a water discharge state, regardless of the “water discharge amount”, the “primary side of the temperature control valve device 30” has a similar degree (sufficiently open to the atmosphere). Therefore, even if the “amount of hot water discharged” is changed, it is possible to suppress the change in internal pressure in the temperature regulating valve device 30. Therefore, in the hot water and water mixing faucet S, the internal pressure of the “temperature regulating valve device 30” can always be set to a constant value or close to a constant value for the “water discharge amount”.

  For this reason, in the hot water / water mixing faucet S, even when a small amount of water is discharged, “the flow rate of water flowing into the thermostat 36 through the water valve port 36j and the thermostat 36 through the hot water valve port 36k”. The ratio of the flow rate of hot water is prevented from “shifting” from a predetermined value (set value) based on the opening ratio of the water valve port 36j and the hot water valve port 36k.

  Therefore, according to the main hot and cold water mixing faucet S, it can be comfortably used in a “wide range of water discharge amount”. Further, the hot water / water mixing faucet S operates the single flow rate adjusting handle 13 so that the flow rate of hot water supplied to the temperature control valve device 30 and the flow rate of water supplied to the temperature control valve device 30 are as follows. Can be increased or decreased at the same time.

  The scope of each invention is not limited to the specific modes shown in the above-described embodiments, and various modifications can be exemplified within the scope of each invention. That is, the “water discharge mechanism” according to the invention of each claim may include a switching function for switching the water discharge flow path.

  That is, as in Modification 1 shown in FIG. 14, the “body 11 has a substantially cylindrical shape (substantially cylinder shape) in which only one end along the axial direction is opened” (the lid member 116 can be eliminated). It is good also as a structure. Further, in the first modification, as shown in FIG. 15A, the width of the locking projection 15k (the width along the radial direction of the spindle 15) is made equal to the diameter of one end face of the valve body 12. ing. Further, as shown in FIG. 15A, both locking grooves 12 y and 12 z are provided on one end surface side of the valve body 12, one end surface of the valve body 12, the outer peripheral surface of the valve body 12, and the valve body 12. It is formed in a state opening with the inner peripheral surface. According to this modification, the structures of the body 11 and the valve body 12 can be simplified.

  Moreover, as shown in the modification 2 of Fig.16 (a), the hot-water and water mixing faucet S is equipped with the currant (water discharge pipe) 70 and the shower equipment (shower hose and shower head) 71 as water discharge means. In this case, the water discharge means for discharging hot water may be selected together with the selection of the water to be discharged by the water supply valve device (water discharge mechanism unit) 50.

  In the invention of each claim, the operation mode of the “water discharge mechanism” is not limited to the “push button type” shown in the embodiments. For example, a “valve water valve device of a type operated using a handle” and a “valve water valve device of a type operated using a lever” can be exemplified. Further, as shown in Modification 3 of FIG. 16B, an electromagnetic valve 76, a sensor 75 for detecting a human body, and a control means (control circuit) 77 for controlling the driving of the electromagnetic valve 76 are provided. The water stop valve device 73 provided can also be exemplified. In the second modification, when the sensor 75 detects a user, the electromagnetic valve 76 is opened, and the hot and cold water mixing faucet is discharged.

  Furthermore, in the invention of each claim, the supply flow rate adjustment valve device (supply flow rate adjustment valve device portion) may be integrated with the temperature adjustment valve device (temperature adjustment mechanism portion) or the like. Also good. However, when the latter is separated, the supply flow rate adjusting valve device (supply flow rate adjusting valve device portion) should be used as a general-purpose part of a “different type of temperature control valve device (temperature control mechanism portion, etc.)”. Can do. In addition, the supply flow rate adjustment valve device (supply flow rate adjustment valve device portion) can be used continuously even if the temperature adjustment valve device (temperature adjustment mechanism portion) or the like has failed or needs to be replaced. It can also produce a merit.

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

It is a schematic explanatory drawing for demonstrating the hot and cold water mixing tap of an Example. It is a cross-sectional view of the supply flow rate adjusting valve device of the embodiment. (A) is a cross-sectional view of the body constituting the supply flow rate adjusting valve device of FIG. 2, (b) is a front view of the body constituting the supply flow rate adjusting valve device of FIG. 2, (c) FIG. 3 is a side view of a body constituting the supply flow rate adjusting valve device of FIG. 2. (A) is a top view of the spindle which comprises the valve apparatus for supply flow volume adjustment of FIG. 2, (b) is a cross-sectional view of the spindle which comprises the valve apparatus for supply flow volume adjustment of FIG. It is a top view which shows the state which decomposed | disassembled the spindle which comprises the valve apparatus for supply flow volume control of FIG. (A) is explanatory drawing for demonstrating a latching protrusion, a latching groove | channel, etc., (b) is sectional drawing of the valve body for demonstrating a latching groove | channel {6-6 of Fig.6 (a) (B) is a sectional view of the spindle for explaining the locking projection {corresponding to a section 7-7 in FIG. 6 (a)}. (A) And (b) is explanatory drawing for demonstrating the function of the valve apparatus for supply flow volume adjustment of an Example. It is explanatory drawing for demonstrating the function of the valve apparatus for supply flow volume adjustment of an Example. It is explanatory drawing for demonstrating the function of the valve apparatus for supply flow volume adjustment of an Example. It is explanatory drawing for demonstrating the function of the valve apparatus for supply flow volume adjustment of an Example. It is a longitudinal cross-sectional view of the temperature control valve apparatus of an Example. It is a schematic explanatory drawing for demonstrating the valve apparatus for water discharge of an Example. It is a schematic explanatory drawing for demonstrating the valve apparatus for water discharge of an Example. It is a cross-sectional view of the supply flow rate adjusting valve device of Modification 1. (A) is sectional drawing (equivalent to the 10-10 cross section of FIG. 14) for demonstrating a locking groove in the modification 1, (b) demonstrates the protrusion for a locking in the modification 1. FIG. It is sectional drawing (equivalent to the 11-11 cross section of FIG. 14) of the spindle for this. (A) is explanatory drawing for demonstrating the modification 1, (b) is explanatory drawing for demonstrating the modification 2. FIG. It is a front view for demonstrating the hot / cold water mixing tap which concerns on a prior art example.

Explanation of symbols

S: Mixing tap for hot water and water,
M: valve chamber,
2W: Stop cock on the water supply side
2H; stop cock on the water supply side,
10; valve device for supply flow rate adjustment (valve device unit for supply flow rate adjustment),
11; body,
B1; hot water inflow hole,
B2: water inflow hole,
B3: hot water outflow hole,
B4; water outflow hole,
12; valve body (valve body part),
12A: Column for hot water,
12B; water columnar part,
12r; water communication hole,
12s; Hot water communication hole,
30; Temperature control valve device (temperature control mechanism),
30H; Hot water outlet (hot water supply part),
30C; water supply port (water supply part),
30J; discharge port (discharge part),
50; Stop water valve device (stop water mechanism),
60: Karan (water discharge means).
RC: Water communication channel,
RH: communication channel for hot water,
GC: water pressure chamber (the other pressure chamber),
GH: Hot water pressure chamber (one pressure chamber).

Claims (6)

A temperature control mechanism unit that mixes hot water supplied through the hot water supply unit and water supplied through the water supply unit at a predetermined mixing ratio, and discharges it through the discharge unit;
A water discharge mechanism disposed on the secondary side of the temperature control mechanism and for selecting whether or not to discharge hot water discharged from the discharge unit;
A hot water / water mixing faucet comprising: a hot water flow rate that is disposed on a primary side of the temperature control mechanism unit and that regulates a flow rate of hot water supplied to the temperature control mechanism unit and a flow rate of water supplied to the temperature control mechanism unit A supply flow rate adjusting valve device for
A valve chamber configured by using a space portion having a substantially circular cross section orthogonal to the axial center, a hot water inlet hole connected to a hot water source, a hot water outlet hole connected to the hot water source, and a water source A valve case portion provided in a state where a water inflow hole communicated with and a water outflow hole communicated with the water supply portion are opened in the valve chamber, and a substantially columnar body having a substantially circular cross section perpendicular to the axis. And is configured to be configured to be capable of performing sliding along the axial direction and rotation around the axial center, and is held in the valve chamber for communicating the hot water inflow hole and the hot water outflow hole. A valve body portion provided with a hot water communication hole, and a water communication hole for communicating the water inflow hole and the water outflow hole;
With
In the valve chamber, portions located on both sides along the axial direction of the valve body portion are respectively pressure chambers, and the valve body portion is configured to communicate the water communication hole with one pressure chamber. A hot water communication channel and a hot water communication channel for communicating the hot water communication hole with the other pressure chamber,
When the valve body portion is slid to increase the volume of the one pressure chamber and reduce the volume of the other pressure chamber, the degree of communication between the hot water inlet hole and the hot water outlet hole is increased, When the degree of communication between the water inflow hole and the water outflow hole is reduced and the valve body slides to reduce the volume of the one pressure chamber and expand the volume of the other pressure chamber, A supply flow rate adjusting valve device, wherein the degree of communication between the hole and the hot water outflow hole is reduced, and the degree of communication between the water inflow hole and the water outflow hole is increased. When the valve body portion is rotated in one rotational direction, the degree of communication between the hot water inlet hole and the hot water outlet hole and the degree of communication between the water inlet hole and the water outlet hole are simultaneously expanded,
When the movable valve body is rotated in the other rotation direction, the degree of communication between the hot water inlet hole and the hot water outlet hole and the degree of communication between the water inlet hole and the water outlet hole are simultaneously reduced. The supply flow rate adjusting valve device according to claim 1.   The rate of change when increasing or decreasing the flow rate of hot water supplied to the temperature control mechanism by rotating the valve body and the flow rate of water supplied to the temperature control mechanism by rotating the valve body 3. The supply flow rate adjusting valve device according to claim 2, wherein the rate of change when increasing or decreasing is made substantially equal.   The said valve body part is comprised by connecting the columnar part for hot water which comprises the said communicating hole for hot water, and the columnar part for water which comprises the said communicating hole for water. The valve apparatus for supply flow rate adjustment in any one of.   In the middle of the hot water supply path connecting between the hot water supply source and the hot water inflow hole, a stop cock on the hot water supply side is disposed, and in the middle of the water supply path communicating between the water supply source and the water inflow hole The supply flow adjustment valve device according to any one of claims 1 to 4, wherein a water stop cock is provided on the water supply side. A temperature control mechanism unit that mixes hot water supplied through the hot water supply unit and water supplied through the water supply unit at a predetermined mixing ratio, and discharges it through the discharge unit;
A water discharge mechanism disposed on the secondary side of the temperature control mechanism and for selecting whether or not to discharge hot water discharged from the discharge unit;
A supply flow rate adjusting valve disposed on the primary side of the temperature control mechanism unit for controlling the flow rate of hot water supplied to the temperature control mechanism unit and the flow rate of water supplied to the temperature control mechanism unit A device section;
A hot and cold water faucet comprising:
The supply flow rate adjusting valve device part is:
A valve chamber configured by using a space portion having a substantially circular cross section orthogonal to the axial center, a hot water inlet hole connected to a hot water source, a hot water outlet hole connected to the hot water source, and a water source A valve case portion provided in a state where a water inflow hole communicated with and a water outflow hole communicated with the water supply portion are opened in the valve chamber, and a substantially columnar body having a substantially circular cross section perpendicular to the axis. And is configured to be configured to be capable of performing sliding along the axial direction and rotation around the axial center, and is held in the valve chamber for communicating the hot water inflow hole and the hot water outflow hole. A valve body portion provided with a hot water communication hole, and a water communication hole for communicating the water inflow hole and the water outflow hole;
With
In the valve chamber, portions located on both sides along the axial direction of the valve body portion are respectively pressure chambers, and the valve body portion is configured to communicate the water communication hole with one pressure chamber. A hot water communication channel and a hot water communication channel for communicating the hot water communication hole with the other pressure chamber,
When the valve body portion is slid to increase the volume of the one pressure chamber and reduce the volume of the other pressure chamber, the degree of communication between the hot water inlet hole and the hot water outlet hole is increased, When the degree of communication between the water inflow hole and the water outflow hole is reduced and the valve body slides to reduce the volume of the one pressure chamber and expand the volume of the other pressure chamber, A hot water / water mixing faucet characterized in that the degree of communication between the hole and the hot water outflow hole is reduced, and the degree of communication between the water inflow hole and the water outflow hole is increased.

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