JP6260936B2 - Hot water mixing valve device - Google Patents

Description

  The present invention relates to a hot and cold water mixing valve device, and is particularly incorporated in a hot and cold water mixing faucet that discharges hot water and adjusts the temperature and flow rate of hot water discharged according to the operation of the operation part of the hot and cold water mixing tap. The present invention relates to a hot and cold water mixing valve device.

  Conventionally, as a hot and cold water mixing valve device that is incorporated in a hot and cold water mixing faucet that stops hot water and can adjust the temperature and flow rate of hot water discharged according to the operation of the operation part of this hot and cold water mixing faucet, As described in Patent Document 1, a temperature adjustment function that adjusts the temperature of hot water discharged by rotating a single operation lever handle in the left-right direction, and a rotation operation of the operation lever in the up-down direction What is incorporated in a hot and cold water mixing faucet (so-called “single lever type hot and cold water mixing faucet”) having a flow control function for adjusting the flow rate of hot water discharged is known.

  In such a conventional hot and cold water mixing valve device described in Patent Document 1, a hot water passage that is fixed in a casing and through which hot water supplied from a hot water source flows and water supplied from the water supply source passes therethrough. A fixed valve body in which a water channel is formed, a movable valve body that opens and closes the hot water passage and the water passage of the fixed valve body by sliding with respect to the fixed valve body, and an operation lever handle of the hot and cold water mixing faucet An operation lever portion is provided that is connected to the valve body and rotates in the left-right direction together with the operation lever handle of the hot and cold water mixing faucet to operate the temperature control of the hot water. The movable valve body is formed with a communication path that can communicate with at least one of the hot water passage and the water passage of the fixed valve body when the movable valve body is in an open state. When the operation lever part is rotated in the left-right direction together with the operation lever handle of the hot and cold water mixing faucet, a protrusion is provided so as to keep the opening cross-sectional area of the communication path substantially constant regardless of the rotation direction. Therefore, it is possible to easily adjust the temperature of the hot water using a single lever type hot and cold water mixing faucet.

  On the other hand, in the conventional general hot and cold water mixing valve device including the hot and cold water mixing valve device described in Patent Document 1 described above, when adjusting the flow rate of discharged hot water, the operation lever portion is mixed with hot and cold water. The hot water flow can be adjusted by rotating it up and down together with the operation lever handle of the faucet. In addition, from the fully closed state in which the movable valve body closes both the hot water passage and the water passage of the fixed valve body, the operation lever portion is rotated up and down to adjust the flow rate of the discharged hot water. In this case, even when the movable valve body is rotated from the fully closed state to the predetermined operating angle range in the vertical direction, the fully closed state of the movable valve body is maintained. When the operation angle of the operation lever portion is set to a larger value, the opening of the movable valve body starts. Thereafter, as the operation angle is set to a larger value, the flow rate of hot water increases almost proportionally and the movable valve body is fully opened. The flow rate can be adjusted up to the maximum flow rate that is in the state.

JP-A-6-185539

However, in the conventional general hot and cold water mixing valve device including the hot and cold water mixing valve device described in Patent Document 1 described above, the water discharged from the hot and cold water mixing faucet is used when the flow of hot water to be discharged is controlled. Within the operating range of the operating lever part and hot water mixing faucet operating lever handle that can discharge water within a relatively low flow rate range from the start, the flow rate of hot water is small and the flow rate is easy to adjust, so the frequency of use is also low. Although it is high, the operation range in which the water discharge can be adjusted within such a low flow rate range is within the full operation range of the operation lever part and the operation lever handle of the hot water / mixed water faucet until the movable valve body is changed from the fully closed state to the fully open state. Limited to a narrow range.
Therefore, even though it is possible to discharge water from the hot and cold water mixing faucet within the high flow rate range, the flow rate of the discharged water is large, so it is difficult to adjust the flow rate, and the operation range with low frequency of use is almost within the entire operation range. There is a problem that it is not convenient for the user.
In addition, in the state where the flow rate of the discharged water is adjusted within a high flow rate range, there is a problem that water splashing occurs, and the flow rate change per unit operation angle of the operation lever part is large, and it is difficult to adjust to the desired flow rate. Since it also takes time to adjust the flow rate, there is a problem that waste water is discharged while the flow rate is adjusted to a desired flow rate.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and can ensure a large operation range in which water is frequently used and can be discharged in a low flow rate range, and the flow rate can be easily adjusted. It is an object of the present invention to provide a hot and cold water mixing valve device.

In order to achieve the above object, the present invention is incorporated in a hot and cold water mixing faucet that discharges hot and cold water, and the temperature and flow rate of hot water discharged are adjusted according to the operation of the operation part of the hot and cold water mixing faucet. A hot water / mixing valve device capable of fixing a casing, a water passage that is fixed in the casing and through which hot water supplied from a hot water source flows, and a water passage through which water supplied from the water source passes is formed. And a movable valve body that is provided in the casing and opens and closes a hot water passage and a water passage of the fixed valve body by sliding relative to the fixed valve body, and the movable valve body is opened. The movable valve body in which a communication passage capable of communicating with at least one of the hot water passage and the water passage of the fixed valve body is formed in the valve state, the operation portion of the hot and cold water mixing faucet, and the movable valve body Together with the operation part of the hot and cold water faucet. An operation lever portion that operates the movable valve body from the closed state to the open state by rotating within a range of a predetermined operation angle in a direction intersecting the sliding surface of the valve body. The predetermined operation angle passes through the fully closed state operation angle in which the hot water passage and the water passage of the fixed valve body are closed by the movable valve body and the communication path of the movable valve body. The fully open state operation angle at which at least one of the hot water passage and the water passage of the fixed valve body is opened in the fully open state by the movable valve body, the fully closed state operation angle, and the An intermediate open state operation angle that is in an intermediate open state with an opening smaller than that when the movable valve body is in the fully open state, and the communication path of the movable valve body includes: The intermediate open state operation angle is the same as the fully closed state operation angle. A flow restrictor for setting the flow rate of hot water passing through the communication path in a low flow rate region less than half of the maximum flow rate when the operation angle is substantially in the middle of the fully open operation angle is provided. Yes.
In the present invention configured as described above, when adjusting the flow rate of hot water discharged from the hot / cold water faucet, the operation lever portion is moved relative to the sliding surface of the movable valve body by operating the operating portion of the hot / cold water faucet. The movable valve body is rotated from the fully closed state operation angle to the fully open state operation angle in the direction intersecting the It can be operated by sliding against it. In addition, since the communication passage of the movable valve body is provided with a flow restrictor, the operation part and the operation lever part of the hot and cold water mixing faucet have an operation angle that is substantially intermediate between the fully closed state operation angle and the fully open state operation angle. Since the flow rate of hot water passing through the communication passage of the movable valve body is set in a low flow rate region that is less than half of the maximum flow rate when the intermediate open state operation angle is set, in particular, the operation unit of the hot and cold water mixing faucet and In the operation range where the operation lever part is set at least from the fully closed state operation angle to the intermediate open state operation angle and the usage frequency is high, water discharge can be performed within the low flow rate range after the water discharge from the hot and cold water mixing faucet is started. . Therefore, it is possible to secure a large operation range that is frequently used and capable of discharging water in a low flow rate region in the entire operation range of the operation unit and the operation lever unit of the hot and cold water mixing faucet. be able to.

In the present invention, preferably, the intermediate open state operation angle is an operation angle that is an intermediate value between the fully closed state operation angle and the fully open state operation angle, and the movable valve body is set to the first intermediate open state. A first intermediate open state operation angle to be set and a second intermediate open state that is larger than the first intermediate open state operation angle and has a larger opening than the first intermediate open state. A second intermediate open state operation angle to be set, and when the operation unit and the operation lever unit of the hot and cold water faucet are operated from the fully closed state operation angle to the second intermediate open state operation angle. The first flow rate increase rate, which is the rate of change of the flow rate increase amount of the hot water passing through the communication passage as the operation angle increases, is that the operation part of the hot and cold water mixing faucet and the operation lever part are connected to the second intermediate point. From the open state operation angle to the fully open state operation angle Is set smaller than the second flow rate increasing rate is hot water flow rate increase in the rate of change passing through the communicating passage with the increase of the operation angle when created.
In the present invention configured as described above, the first intermediate opening that is an intermediate value between the fully closed state operating angle and the fully open state operating angle from the fully closed state operating angle when the movable valve body is in the closed state. Hot water from the second intermediate open state operation angle to the fully open state operation angle is within the range of the operation angle of the hot water and water mixing faucet and the operation lever part up to the second intermediate open state operation angle larger than the state operation angle. It is set to be larger than the operation angle range of the operation unit and the operation lever unit of the mixing faucet, and the operation unit and operation lever unit of the hot water mixing faucet are moved from the fully closed state operation angle to the second intermediate open state operation angle. The first flow rate increase rate, which is the rate of change in the flow rate increase amount of the hot water passing through the communication passage of the movable valve body when the operation angle is increased, causes the operation portion and the operation lever portion of the hot and cold water mixing faucet to move. Fully open from the second intermediate open state operating angle Since it is set to be smaller than the second flow rate increase rate that is the rate of change of the flow rate increase amount of the hot water passing through the communication passage of the movable valve body with the increase of the operation angle when operated up to the state operation angle, Of the entire operation range of the lever unit and the operation unit of the hot water and water faucet, most of the operation range from the fully closed state operation angle to the second intermediate open state operation angle is the operation range for realizing water discharge in a low flow rate region. A small operation range from the second intermediate open state operation angle to the fully open state operation angle can be assigned as an operation range for realizing water discharge in a high flow rate region. Therefore, when water discharge in the low flow rate region of the hot / cold water faucet is required, the operation part and the operating lever part of the hot / cold water faucet are greatly increased from the fully closed state operation angle to the second intermediate open state operation angle. By operating in the operating range, water discharge can be performed in the low flow rate region after water discharge from the hot water / water mixing faucet is started, so the hot water passing through the communication passage of the movable valve body is determined from the second flow rate increase rate. The flow rate can be finely adjusted with a small first flow rate increase rate. On the other hand, when water discharge within a high flow rate of the hot and cold water mixing faucet is required, the operation unit and operating lever of the hot and cold water mixing faucet can be operated within a small operating range from the second intermediate opening state operation angle to the full opening state operation angle. The hot water passing through the communication passage of the movable valve element is quickly adjusted at a second flow rate increase rate that is larger than the first flow rate increase rate, and water is discharged within a high flow rate region. And high operability for the user can be realized.

In the present invention, preferably, the flow restrictor of the communication passage is formed as a protrusion, and the length from the base end to the tip of the protrusion is the length of the hot water passage and the water passage of the fixed valve body. It is set smaller than the width dimension of the channel cross section.
In the present invention configured as described above, the flow restrictor of the communication passage of the movable valve element is formed as a protrusion, and the length from the base end to the tip of the protrusion is the hot water flow of the fixed valve element. The operation section and operation lever section of the hot and cold water mixing faucet are set at least from the fully closed state operation angle to the intermediate open state operation angle because it is set smaller than the width dimension of the channel cross section of the channel and water passage In the operation range with high frequency, the hot water passage of the fixed valve body opened by the movable valve body and the opening area of the water passage can be appropriately narrowed by the protrusions. Therefore, water discharge can be effectively performed within the low flow rate range after water discharge from the hot and cold water mixing faucet is started, and flow rate adjustment can be facilitated. On the other hand, in the operation range in which the operation part and the operation lever part of the hot and cold water mixing faucet are set from the intermediate open state operation angle to the fully open state operation angle and the usage frequency is low, at least one of the hot water passage and water passage of the fixed valve body Since hot water that has flowed into the communication passage of the movable valve body easily passes around the protrusions, water can be discharged in a high flow rate region, and high operability for the user can be realized.

In the present invention, preferably, the protrusion is formed in a substantially arc shape in plan view.
In the present invention configured as described above, the protrusion is formed in a substantially arc shape in plan view, and in particular, the water discharge state in the low flow rate region by the operation of the operation part and the operation lever part of the hot and cold water mixing faucet When adjusting the flow rate to switch to the water discharge state in the high flow rate range, the rate of change in the flow rate increase of the hot water passing through the communication passage of the movable valve body is changed nonlinearly before and after the switching as the operation angle increases. Therefore, fine adjustment of the flow rate can be performed by changing the water discharge flow rate more smoothly.

In the present invention, preferably, the projection has a width dimension set to be larger than a distance between the water passage and the water passage of the fixed valve body in a plan view.
In the present invention configured as described above, the width dimension in the plan view of the protrusion is set larger than the distance between the hot water passage and the water passage of the fixed valve body. When the protrusion of the communication passage of the movable valve body is disposed between the hot water passage and the water passage of the fixed valve body by the operation of the control portion and the operation lever portion, the protrusion portion passes through the fixed valve body. Each flow path cross section of a hot water channel and a water flow channel can be partially narrowed reliably. Therefore, the flow rate can be effectively reduced with respect to the hot water flowing into the communication passage of the movable valve body from each of the hot water passage and the water passage of the fixed valve body.

In the present invention, preferably, the flow restrictor of the communication passage is configured such that a part of a peripheral surface portion in the communication passage facing the hot water passage and the water passage of the fixed valve body is a flow passage of the communication passage. The movable valve body is formed in a tapered shape inclined at a predetermined angle with respect to the longitudinal direction of the movable valve body so as to narrow the cross section.
In the present invention configured as described above, a part of the peripheral surface portion in the communication passage of the movable valve body facing the hot water passage and the water passage of the fixed valve body narrows the flow passage cross section of the communication passage. By adopting a flow restrictor formed in a tapered shape inclined at a predetermined angle with respect to the longitudinal direction of the movable valve body, the operation part and operation lever part of the hot / cold water faucet are at least intermediate from the operation angle of the fully closed state. In the operating range where the operating frequency is set to the open state operating angle and the usage frequency is high, the hot water passage of the fixed valve body opened by the movable valve body and the opening area of the water passage can be appropriately narrowed by the tapered flow restrictor. it can. Therefore, water discharge can be effectively performed within the low flow rate range after water discharge from the hot and cold water mixing faucet is started, and flow rate adjustment can be facilitated. On the other hand, in the operation range state in which the operation portion and the operation lever portion of the hot water / water mixing faucet are set from the intermediate open state operation angle to the full open state operation angle and the use frequency is low, at least the hot water passage and the water passage of the fixed valve body Since hot water flowing into the communication passage of the movable valve body from one side easily passes through the tapered flow restrictor, water can be discharged in a high flow rate range, and high operability for the user can be realized. Can do.

  According to the hot and cold water mixing valve device of the present invention, it is possible to ensure a large operation range in which water is frequently used and water can be discharged in a low flow rate region, and the flow rate can be easily adjusted.

It is the schematic perspective view which looked at the hot / cold water mixing faucet apparatus with which the hot / cold water mixing valve apparatus by 1st Embodiment of this invention was integrated from diagonally forward. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic plan view of the hot / cold water mixing faucet device incorporating the hot / cold water mixing valve device by 1st Embodiment of this invention, the hot water mixing operation area | region which discharges mixed hot water, the hot water side operation area | region which discharges only hot water, and only water It is the figure which demonstrated roughly the water side operation area | region which discharges water. It is the disassembled perspective view which looked at the hot / cold water mixing valve apparatus by 1st Embodiment of this invention from diagonally back. In the hot and cold water mixing valve device according to the first embodiment of the present invention, the operation handle of the hot and cold water mixing device is set to the central temperature control position (front position of the hot and cold water mixing device) and the flow control angle is set to 0 degree. It is a top view which shows the movable valve body and fixed valve body of a fully closed state when set to (2). Hot water passage and water passage of a fixed valve body communicating with the flow control operation angle θ of the operation handle of the hot water and water faucet device incorporating the hot water and water mixing valve device according to the first embodiment of the present invention and the communication passage of the movable valve body it is a diagram qualitatively explains the relationship between the opening area S _T of a diagram comparing a comparative example in which the protrusion of throttle flow rate in the communication passage of the movable valve body is not provided. FIG. 3 is a diagram qualitatively explaining the relationship between the flow adjustment angle θ and the flow rate Q of the operation handle of the hot and cold water mixing faucet device incorporating the hot and cold water mixing valve device according to the first embodiment of the present invention. It is the figure compared with the comparative example when the protrusion for flow-rate throttling is not provided in this communication path. (A) of FIG. 7 is the hot water mixing valve apparatus by 1st Embodiment of this invention, and sets the operation handle of the hot water mixing faucet apparatus to the center temperature control operation position (front position of the hot water mixing faucet apparatus). FIG. 7B is a plan view showing the movable valve body and the fixed valve body in a state where the flow adjustment operation angle is set to 15 degrees and water is discharged, and FIG. 7B is a plan view of the book shown in FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to the first embodiment of the present invention, and is a plane showing the movable valve body and the fixed valve body in a state where the flow restricting projection is not provided in the communication passage of the movable valve body. FIG. FIG. 8 (a) shows a hot water / mixing valve device according to the first embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set to the temperature control operation position closest to the hot water and the flow control operation angle is set to 15 degrees. FIG. 8B is a plan view showing the movable valve body and the fixed valve body in a state where only hot water is discharged, and FIG. 8B is a diagram according to the first embodiment of the present invention shown in FIG. It is a comparative example with respect to the movable valve body of the hot water / mixing valve device, and is a plan view showing the movable valve body and the fixed valve body in a state in which no flow restricting projection is provided in the communication passage of the movable valve body. FIG. 9 (a) shows a hot water / mixing valve device according to the first embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set at the most temperature side temperature control operation position and the flow control operation angle is 15 degrees. FIG. 9B is a plan view showing a movable valve body and a fixed valve body in a state where only water is discharged while being set to 1 and FIG. 9B is a first embodiment of the present invention shown in FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to FIG. It is a schematic plan view of the hot and cold water mixing faucet device incorporating the hot and cold water mixing valve device according to the second embodiment of the present invention, and includes a hot water side operation region for discharging only hot water, a water side operation region for discharging only water, and mixed hot water. It is the figure which demonstrated roughly the hot water mixing operation area | region which discharges water. In the hot and cold water mixing valve device according to the second embodiment of the present invention, the operation handle of the hot and cold water mixing device is set at the central temperature control position (the front position of the hot and cold water mixing device) and the flow control angle is 0 degree. It is a top view which shows the movable valve body and fixed valve body of a fully-closed state and a fully-open state when set to (2). (A) of FIG. 12 is the hot water mixing valve apparatus by 2nd Embodiment of this invention, and sets the operation handle of the hot water mixing faucet apparatus to the center temperature control operation position (front position of the hot water mixing faucet apparatus). FIG. 12B is a plan view showing the movable valve body and the fixed valve body in a state in which only the water is discharged with the flow adjustment operation angle set to 15 degrees. FIG. 12B is a plan view of FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to the second embodiment of the present invention, and includes a movable valve body and a fixed valve body in a state in which no projection for flow restriction is provided in the communication passage of the movable valve body. FIG. FIG. 13 (a) shows a hot water mixing valve device according to the second embodiment of the present invention, in which the operating handle of the hot water mixing faucet device is set to the temperature control operation position closest to the hot water side and the flow control operation angle is set to 15 degrees. It is a top view which shows the movable valve body and fixed valve body of the state which is discharging to only hot water, and FIG.13 (b) is based on 2nd Embodiment of this invention shown to (a) of FIG. It is a comparative example with respect to the movable valve body of the hot water / mixing valve device, and is a plan view showing the movable valve body and the fixed valve body in a state in which no flow restricting projection is provided in the communication passage of the movable valve body. (A) of FIG. 14 is the hot water / mixing valve device according to the second embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set to the most water temperature control operation position and the flow control operation angle is set to 15 degrees. It is a top view which shows the movable valve body and fixed valve body of the state which is discharging to only water, and FIG.14 (b) is based on 2nd Embodiment of this invention shown to Fig.14 (a). It is a comparative example with respect to the movable valve body of the hot water / mixing valve device, and is a plan view showing the movable valve body and the fixed valve body in a state in which no flow restricting projection is provided in the communication passage of the movable valve body. In the hot and cold water mixing valve device according to the third embodiment of the present invention, the operation handle of the hot and cold water mixing device is set at the central temperature control operation position (front position of the hot water and water mixing device) and the flow control operation angle is 0 degree. It is a top view which shows the movable valve body and fixed valve body of a fully-closed state and a fully-open state when set to (2). (A) of FIG. 16 is the hot water mixing valve apparatus by 3rd Embodiment of this invention, and sets the operation handle of the hot water mixing faucet apparatus to the center temperature control operation position (front position of the hot water mixing faucet apparatus). FIG. 16B is a plan view showing the movable valve body and the fixed valve body in a state in which only the water is discharged with the flow adjustment operation angle set to 15 degrees, and FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to the third embodiment of the present invention, and the movable valve body and the fixed valve body in a state in which the communication passage of the movable valve body is not provided with a taper for flow restriction. FIG. (A) of FIG. 17 is the hot water mixing valve apparatus by 3rd Embodiment of this invention, and sets the operation handle of the hot water mixing faucet apparatus to the hot water side temperature control operation position, and sets the flow control operation angle to 15 degrees. It is a top view which shows the movable valve body and fixed valve body of the state which is discharging to only hot water, and FIG.17 (b) is based on 3rd Embodiment of this invention shown to (a) of FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device, and is a plan view showing the movable valve body and the fixed valve body in a state in which the flow restricting taper portion is not provided in the communication passage of the movable valve body. (A) of FIG. 18 is the hot water mixing valve apparatus by 3rd Embodiment of this invention, and sets the operation handle of the hot water mixing faucet apparatus to the most water side temperature control operation position, and sets the flow control operation angle to 15 degrees. FIG. 18B is a plan view showing a movable valve body and a fixed valve body in a state where only water is discharged while being set to, and FIG. 18B is a third embodiment of the present invention shown in FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to the above, and is a plan view showing the movable valve body and the fixed valve body in a state where the communication passage of the movable valve body is not provided with a taper for flow restriction.

Hereinafter, a hot and cold water mixing valve device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 is a schematic perspective view of a hot and cold water mixing faucet device incorporating a hot and cold water mixing valve device according to a first embodiment of the present invention as viewed obliquely from the front.
As shown in FIG. 1, a hot and cold water mixing device 2 incorporating a hot and cold water mixing valve device 1 according to a first embodiment of the present invention includes hot water and a water supply source (not shown) supplied from a hot water supply source (not shown). So that the water flow rate and temperature adjusted by operating the single operation handle 4 can be discharged from the spout 6 a of the spout 6. This is a lever-type hot and cold water mixing device.

  That is, the hot / cold water faucet device 2 includes a hot / cold water faucet device body 2a which is disposed on the counter 8 of the kitchen sink or wash basin and in which the hot / cold water mixing valve device 1 of the present embodiment is built. Yes. A spout 6 is provided in a lower region of the outer peripheral portion of the hot and cold water mixing device 2a, and an operation lever member (described later) of the hot and cold water mixing valve device 1 is provided at the upper end of the hot and cold water mixing device 2a. An operation handle 4 connected to an unillustrated) is provided.

The operation handle 4 includes an operation handle body 4a connected to an operation lever member (not shown) of the hot and cold water mixing valve device 1 which will be described later, and the operation handle body 4a extends in a horizontal left-right direction. The direction of the arrow “closed” and the arrow “open” shown in FIG. 1 within the range of a predetermined operation angle θ (hereinafter referred to as “flow adjustment operation angle θ”) in the vertical direction in the vertical plane around the operation axis A1. It is possible to perform a turning operation to adjust the water discharge flow rate of the hot and cold water mixing device 2 from the water stop state to the maximum water discharge state according to the flow adjustment operation angle θ. It has become.
For example, the operation angle θ of the operation handle 4 when the distal end portion 4b of the operation handle 4 is located at the lowermost position is set to 0 degree (θ = 0 °), and the state where the flow adjustment operation angle θ is 0 degree is defined as the operation handle 4 The operation handle 4 can be rotated from the closed position upward (in the direction of the arrow “open” shown in FIG. 1) up to a maximum flow adjustment operation angle θ of 25 degrees. When the flow adjustment operation angle θ is in the range of 0 to 5 degrees, the water stoppage state is maintained, and in the range of the flow adjustment operation angle θ greater than 5 degrees and the maximum of 25 degrees, the water discharge state is maintained. Thus, the larger the operation angle θ, the larger the flow rate of hot water discharged from the spout 6a of the spout 6 can be set.

  Further, the operation handle 4 has a center axis extending in the vertical direction at the center of the hot and cold water faucet device main body 2a and the operation handle main body 4a as an operation axis A2, and the operation handle 4 is horizontally moved around the operation axis A2 in the horizontal plane. It can be rotated within a predetermined operating angle φ (hereinafter referred to as “temperature adjustment operation angle φ”), and from the spout 6a of the spout 6 of the hot and cold water mixing apparatus 2 according to the temperature adjustment operation angle φ. Temperature control operation to adjust the temperature of hot water discharged is possible. That is, the operation handle 4 is one of a hot water mixing operation region for discharging mixed hot water, a hot water operation region for discharging only hot water, or a water side operation region for discharging only water according to the temperature adjustment operation angle φ. Can be set in the operation area.

Next, FIG. 2 is a schematic plan view of a hot and cold water mixing faucet device in which the hot and cold water mixing valve device according to the first embodiment of the present invention is incorporated. It is the figure which demonstrated roughly the water side operation area | region which discharges only a side operation area | region and water.
As shown in FIG. 2, for example, the distal end 4b of the operation handle 4 is directed to the front side of the hot and cold water mixing apparatus 2a, and the center C1 of the distal end 4b of the operation handle 4 is the operation axis A2 in plan view. When the temperature adjustment operation angle φ of the operation handle 4 when it is on the axis A3 that extends vertically and in the front-rear direction is 0 degree (φ = 0 °), the temperature adjustment operation angle φ of the operation handle 4 is 0. From the center temperature adjustment operation position P0 at the time of the horizontal direction of the arrow “H” in FIGS. 1 and 2 (clockwise direction clockwise when the operation axis A2 shown in FIGS. 1 and 2 is viewed from above) ), The magnitude of the temperature adjustment operation angle φ can be set up to the temperature adjustment operation position P1 rotated to the maximum temperature adjustment operation angle φ1 (for example, φ1 = 50 °) on the hot water side. Further, the temperature of the operation handle 4 is adjusted in the horizontal direction of the arrow “C” in FIGS. 1 and 2 (counterclockwise (counterclockwise) when the operation axis A2 shown in FIGS. 1 and 2 is viewed from above). The size of the angle φ can be set up to the temperature adjustment operation position P2 rotated to the maximum temperature adjustment operation angle φ2 on the water side (for example, φ2 = 50 °).
That is, when the operation handle 4 is rotated from the central temperature adjustment operation position P0 toward the hot water side maximum temperature adjustment operation angle φ1, the larger the temperature adjustment operation angle φ is, the larger the spout 6 is. The temperature of the hot water discharged from the water discharge port 6a can be set to the high temperature side, and the operation handle 4 is moved from the central temperature adjustment operation position P0 toward the maximum temperature adjustment operation angle φ2 on the water side. When the turning operation is performed, the temperature of the hot water discharged from the water outlet 6a of the spout 6 can be set to a lower temperature as the temperature adjustment operation angle φ is larger.

As shown in FIG. 2, the operation region R in which the operation handle 4 is rotated in the horizontal direction during the temperature adjustment operation is a hot water mixing operation region located in the center when the hot water mixing faucet device 2 is viewed from the front front. R0, a hot water side operation region R1 located on the left side (hot water side) of the hot water / mixing operation region R0 shown in FIG. 2, and a water side operation region located on the right side (water side) of the hot water / mixing operation region R0 shown in FIG. And R2.
The hot water / mixing operation region R0 has a state in which the temperature adjustment operation angle φ of the operation handle 4 is 0 degree and predetermined temperature adjustment operation angles φ3 and φ4 that are symmetrically equal in size from the hot water side to the water side. This is an operation region up to a state in which the rotation operation is performed at (for example, φ3 = φ4 = 40 °), and is an operation region in which hot and cold water is discharged from the water outlet 6a of the hot and cold water mixing faucet device 2.
The hot water side operation region R1 is the maximum hot water side temperature control from the state in which the temperature control operation angle φ of the operation handle 4 is set to an operation angle larger than the predetermined temperature control operation angle φ3 on the hot water side. This is an operation region up to a state in which the operation angle φ1 is rotated, and is an operation region in which only hot water is discharged from the water outlet 6a of the hot and cold water mixing device 2.
Further, the water-side operation region R2 has a maximum temperature adjustment on the water side from a state where the temperature adjustment operation angle φ of the operation handle 4 is set to an operation angle larger than the predetermined temperature adjustment operation angle φ4 on the water side. This is an operation region up to a state in which the operation angle φ2 is rotated, and is an operation region in which only water is discharged from the water discharge port 6a of the hot and cold water mixing device 2.

Next, details of the hot and cold water mixing valve device according to the first embodiment of the present invention will be described with reference to FIGS.
First, FIG. 3 is an exploded perspective view of the hot and cold water mixing valve device according to the first embodiment of the present invention viewed obliquely from the rear.
As shown in FIG. 3, the hot and cold water mixing valve device 1 according to the present embodiment includes a lower casing member 10, a seal member 12 attached to the outer periphery of the lower casing member 10, and a lower side. The fixed valve body 14 is inserted into the casing member 10 from above and fixed, and the movable valve body 16 is slidably and rotatably attached to the upper surface of the fixed valve body 14.
The hot and cold mixing valve device 1 is attached to the communication passage 16a of the movable valve body 16 that can communicate with the hot water passage 14a and the water passage 14b of the fixed valve body 14 and rectifies the hot water in the communication passage 16a. 18, a movable valve element guide member 20 that is attached to the movable valve element 16 via the mesh member 18, and a holding member 22 that is attached to the movable valve element guide member 20.
Further, the hot and cold water mixing valve device 1 includes an operation lever member 24 having a lower end portion 24a connected to the upper end portion of the movable valve element guide member 20 via a holding member 22, and a seal member 26 attached to the operation lever member 24. The upper casing member 28 that accommodates these members 14 to 26, the connecting member 30 that connects the upper end 24b of the operating lever member 24 that extends through the upper end of the upper casing member 28 and the operating handle body 4a. It has.

Next, FIG. 4 shows a hot water mixing valve device according to the first embodiment of the present invention, in which the operation handle of the hot water mixing faucet device is set to the central temperature control operation position (front position of the hot water mixing faucet device). It is a top view which shows the movable valve body and fixed valve body of a fully closed state when a flow adjustment operation angle is set to 0 degree | times.
As shown in FIGS. 3 and 4, hot water supplied from a hot water supply source (not shown) outside the hot-water mixing faucet device 2 passes through the bottom surface of the lower casing member 10 below the fixed valve body 14. And a water passage 10b through which water supplied from a water supply source (not shown) outside the hot-water mixing faucet device 2 passes is formed so as to penetrate in the vertical direction. Each of the hot water passage 10a and the water passage 10b of the casing member 10 is disposed and communicated with the hot water passage 14a and the water passage 14b of the fixed valve body 14 so as to face each other in the vertical direction.
Further, a hot water mixing passage 10c is formed on the bottom surface of the lower casing member 10 adjacent to the hot water passage 10a and the water passage 10b, and the fixed valve body 14 is adjacent to the hot water passage 14a and the water passage 14b. A hot and cold water mixing path 14c is formed. In a state where the movable valve body 16 opens at least one of the hot water passage 14a and the water passage 14b of the fixed valve body 14 (open valve state), the hot water of the lower casing member 10 is supplied from a hot water supply source (not shown). Hot water that has passed through the hot water passage 14a of the fixed valve body 14 through the passage 10a flows into the communication passage 16a of the movable valve body 16, and from the water supply source (not shown), the hot water passage 10b of the lower casing member 10 passes through the water passage 10b. Then, when water that has passed through the water passage 14b of the fixed valve body 14 flows into the communication passage 16a of the movable valve body 16, the hot water and water are mixed in the communication passage 16a of the movable valve body 16, and then fixed. It passes through the hot water / mixing path 14c of the valve body 14 and flows out of the hot water / mixing path 10c of the lower casing member 10, and the discharged mixed hot water passes through the water passage in the spout 6 of the hot water / mixing faucet device 2 to the water outlet 6a. It comes to be discharged from.

Next, as shown in FIG. 3, the movable valve element guide member 20 is provided with a protruding portion 20 a that protrudes upward from the substantially central portion thereof, and the protruding portion 20 a is vertically formed at the substantially central portion of the holding member 22. It is inserted from below into a through hole 22a formed so as to penetrate. In addition, a fitting hole 20b into which the lower end portion 24a of the operation lever member 24 is inserted and fitted is formed inside the protruding portion 20a of the movable valve element guide member 20.
Further, as shown in FIGS. 1 and 3, the operation lever member 24 has the longitudinal axis A4 of the operation lever member 24 mixed with hot water when the flow adjustment operation angle θ is 0 degrees (valve closed state). The water faucet device main body 2a stands up in alignment with a central axis (operation axis A2) extending in the vertical direction. When the operation handle 4 of the hot and cold water mixing device 2 is rotated about the operation axis A1 so that the flow adjustment operation angle is increased by the angle θ, the operation lever member 24 is also raised from the standing state. The longitudinal axis A4 of 24 is inclined so as to be inclined at an operation angle θ with respect to a central axis (operation axis A2) extending in the vertical direction of the hot and cold water mixing device main body 2a.
Further, as shown in FIG. 3, when the operation lever member 24 is tilted by the flow adjustment operation angle θ by the operation of the operation handle 4, the lower end portion 24a of the operation lever member 24 pushes the movable valve element guide member 20 with respect to the protruding portion 20a. The movable valve element guide member 20 is moved relative to the holding member 22 by pressing the movable valve element 16 in the opening direction with the pressure f. The movable valve body 16 fixed to the movable valve body guide member 20 moves (slids) in the direction to open the valve with respect to the fixed valve body 14. That is, the operation lever member 24 is located in a plane (within a vertical plane) perpendicular to the upper surface of the fixed valve body 14 and the sliding surface of the movable valve body 16 that slides along the upper surface. The movable valve body 16 can be operated from the closed state to the open state by rotating together with the operation handle 4 within a range of a predetermined flow adjustment operation angle θ.
In this embodiment, the operation lever member 24 is hot and cold in a plane (in a vertical plane) perpendicular to the upper surface of the fixed valve body 14 and the sliding surface of the movable valve body 16 that slides along the upper surface. A mode in which the operation handle 4 of the mixed water faucet device 2 is rotated within the range of a predetermined flow adjustment operation angle θ will be described. However, the present invention is not limited to such a mode, and the operation lever member 24 is connected to the movable valve body 16. If the operation lever member 24 is rotated in a plane intersecting the sliding surface, the operation lever member 24 is rotated in a plane other than the plane perpendicular to the sliding surface of the movable valve body 16 (vertical plane). It may be a form to be moved.

Further, regardless of the flow adjustment operation angle θ of the operation handle 4, when the operation handle 4 is rotated by the temperature adjustment operation angle φ around the operation axis A2, the operation lever member 24 rotates about the longitudinal axis A4. The movable valve element guide member 20 to which the lower end portion 24 a of the operation lever member 24 is connected rotates together with the movable valve element 16 in a horizontal plane with respect to the fixed valve element 14. Thereby, according to the temperature control operation angle (phi) of the operation handle 4, the flow-path cross-sectional area of the part connected to the communicating path 16a of the movable valve body 16 in the hot water flow path 14a of the fixed valve body 14 and the water flow path 14b changes. The temperature of the hot and cold water mixed in the communication passage 16a of the movable valve body 16 is adjusted.
For example, the opening cross-sectional area S1 of the hot water passage 14a of the fixed valve body 14 communicating with the communication passage 16a of the movable valve body 16 is large, and the fixed valve body 14 communicating with the communication passage 16a of the movable valve body 16 is large. The smaller the opening cross-sectional area S2 of the water passage 14b, the higher the temperature of the hot water mixed in the communication passage 16a of the movable valve body 16 is adjusted to the higher temperature side, and the fixed valve communicating with the communication passage 16a of the movable valve body 16 is. The smaller the opening cross-sectional area S1 of the hot water passage 14a of the body 14 is, and the larger the opening cross-sectional area S2 of the water passage 14b of the fixed valve body 14 communicating with the communication passage 16a of the movable valve body 16 is. The temperature of the hot and cold water mixed in the communication passage 16a is adjusted to the low temperature side.

  Further, as shown in FIG. 3, the seal member 12 is configured to liquid-tightly seal the inside and outside of these members 10, 28 in a state where the upper casing member 28 is attached to the lower casing member 10. It has become. The seal member 26 includes an insertion hole 28a in which the upper end portion 24b of the operation lever member 24 can be inserted in a substantially central portion of the upper casing member 28, and an operation lever member formed in a ball shape of the operation lever member 24. It is attached between the middle part 24c of 24, and the inside and the exterior of the upper casing member 28 are sealed in a liquid-tight manner.

Next, as shown in FIG. 4, the communication passage 16 a of the movable valve body 16 is formed such that a region on the rear side of the center C <b> 2 of the movable valve body 16 is tapered toward the rear in plan view. A region on the front side of the center C2 of the body 16 is formed in a substantially circular arc shape in a portion other than the flow rate restricting projections 32 and 34 described later in detail.
Further, as shown in FIG. 4, the front portion of the inner peripheral surface of the communication passage 16 a of the movable valve body 16 has a central axis A <b> 5 extending in the front-rear direction of the fixed valve body 14 and the front-rear direction of the movable valve body in a plan view. Two flow rate restricting projections 32 and 34 formed in a pair symmetrically with respect to the central axis A6 extending in the direction are provided, and these projections 32 and 34 pass through the communication passage 16a of the movable valve body 16. It functions as a flow restrictor that restricts the flow of hot water.
Further, as shown in FIG. 4, the lengths h1 and h2 from the base ends B1 and B2 to the tip ends T1 and T2 of the protrusions 32 and 34 are respectively determined by the hot water passage 14a of the fixed valve body 14 and It is set smaller than the minimum width dimension (vertical dimension) H1 and H2 in each channel cross section of the water flow path 14b. More precisely, the lengths h1 and h2 of the protrusions 32 and 34 are determined by the opening and closing direction of the movable valve body 16 (the axial direction of the central axis A6 of the movable valve body 16) and the hot water passage 14a of the fixed valve body 14. The minimum width dimension (vertical dimension) of the cross section of each of the hot water passage 14a and the water passage 14b of the fixed valve body 14 (in the axial direction of the central axis A7 extending in the front-rear direction in the partition wall 14d partitioning the water passage 14b). It is set smaller than H1 and H2.

  Further, as shown in FIG. 4, each of the protrusions 32 and 34 is formed in a substantially circular arc shape in a plan view, and with respect to a straight line connecting each base end B1 and B2 and each tip T1 and T2. The maximum width dimensions W1 and W2 in the vertical direction are the distances between the hot water passage 14a and the water passage 14b of the fixed valve body 14, that is, more strictly, the central axis A7 of the partition wall 14d of the fixed valve body 14 Is set larger than the width dimension w1 in the direction perpendicular to the axial direction.

Next, with reference to FIGS. 1 to 9, the operation (action) of the hot and cold water mixing valve device 1 according to the first embodiment of the present invention described above will be described.
First, referring to FIG. 1 to FIG. 7, the temperature adjustment operation angle θ is set to the central temperature adjustment operation position P0 where the temperature adjustment operation angle φ of the operation handle 4 of the hot and cold water mixing device 2 is 0 degree. The operation (action) of the hot / cold water mixing valve device 1 of the present embodiment when the opening / closing operation is performed within the range of 0 ° to 25 ° will be described.
FIG. 5 is a flow chart of the fixed valve body communicating with the flow control operation angle θ of the operation handle of the hot water / mixing faucet apparatus incorporating the hot water / water mixing valve apparatus according to the first embodiment of the present invention and the communication passage of the movable valve body. is a diagram qualitatively explains the relationship between the opening area S _T of the road and the water passage is a view projection for throttle flow rate in the communication passage of the movable valve body is compared to the comparative example in which not provided .
Here, in FIG. 5, the vertical axis indicates the opening area S1 of the hot water passage 14a of the fixed valve body 14 and the water passage 14b that communicate with the communication passage 16a of the movable valve body 16 of the hot water mixing valve device 1 of the present embodiment. The total opening area S _T (= S1 + S2) [mm ² ] is added to the opening area S2. On the other hand, the horizontal axis of FIG. 5 indicates the flow adjustment operation angle θ [deg] of the operation handle 4 of the hot and cold water mixing faucet device 2, and the flow adjustment of the operation lever member 24 of the hot water and water mixing valve device 1 of this embodiment. It corresponds to the operation angle.

FIG. 6 is a diagram qualitatively explaining the relationship between the flow control angle θ and the flow rate Q of the operation handle of the hot and cold water mixing faucet device incorporating the hot and cold water mixing valve device according to the first embodiment of the present invention. FIG. 5 is a view comparing with a comparative example in which a flow restricting projection is not provided in the communication passage of the movable valve body.
Here, in FIG. 6, the vertical axis indicates the flow rate Q [L / min] of hot water passing through the communication passage 16a of the movable valve body 16 of the hot water mixing valve device 1 of the present embodiment. This also corresponds to the flow rate of hot water discharged from the spout 6 a of the spout 6 of the stopper device 2.
On the other hand, the horizontal axis of FIG. 6 shows the flow adjustment operation angle θ [deg] of the operation handle 4 of the hot and cold water mixing faucet device 2, and the flow adjustment of the operation lever member 24 of the hot water and water mixing valve device 1 of the present embodiment. It corresponds to the operation angle.
In FIG. 6, the region where the flow rate Q on the vertical axis is equal to or less than the flow rate Q _L (= Qmax / 2) [L / min] which is half the maximum flow rate Qmax (for example, Q _L = 5.0 [L / min]). (0 ≦ Q ≦ Q _L ) is defined as “low flow range”, the flow rate Q is larger than the flow rate Q0 [L / min] and the maximum flow rate Qmax [L / min] (for example, Qmax = 10.0 [L / min) ]) The following region (Q _L ≦ Q ≦ Qmax) is defined as a “high flow rate region”.

  Furthermore, (a) of FIG. 7 is the hot water mixing valve apparatus by 1st Embodiment of this invention. WHEREIN: The operation handle of the hot water mixing faucet apparatus is set to the center temperature control operation position (front position of the hot water mixing faucet apparatus). It is a top view which shows the movable valve body and fixed valve body of the state which is set and the flow adjustment operation angle is set to 15 degree | times, and hot water is discharged. On the other hand, FIG. 7B is a comparative example for the movable valve body of the hot and cold water mixing valve device according to the first embodiment of the present invention shown in FIG. 7A. It is a top view which shows the movable valve body and fixed valve body of the state in which the processus | protrusion is not provided.

As shown in FIGS. 1 to 7, the operation handle 4 of the hot and cold water mixing device 2 is set to the central temperature adjustment operation position P0 where the temperature adjustment operation angle φ is 0 degree, and the flow adjustment operation angle θ is set to 0 degree. When the opening / closing operation is performed within a range of from 25 degrees to 25 degrees, first, in the flow adjustment operation range where the flow adjustment operation angle θ shown in FIGS. 1 of the movable valve body 16, the greater the flow adjustment operation angle theta, but slides only a small distance forward with respect to the fixed valve body 14, the opening area S _T of FIG. 5 is 0, the flow of FIG. 6 Since Q is also 0, the fully closed state (see FIG. 4) in which both the hot water passage 14a and the water passage 14b of the fixed valve body 14 are closed is maintained, and the hot water mixing faucet device 2 is also maintained in the water stop state. Is done. On the other hand, the same fully closed state is maintained also for the comparative examples shown in FIGS.

  Further, as shown in FIGS. 5 and 6, when the flow adjustment operation angle θ exceeds the angle θ0, the movable valve body 16 starts to open the hot water passage 14a and the water passage 14b of the fixed valve body 14, and the hot water mixing is performed. When the water discharge from the water outlet 6a of the faucet device 2 is started and the flow adjustment operation angle θ is equal to or less than the angle θ0, the fully closed state in which both the hot water passage 14a and the water passage 14b of the fixed valve body 14 are closed. Maintained. That is, the flow adjustment operation angle θ0 is larger than 0 degree, and is an operation angle at which water discharge is started when the operation angle θ0 is exceeded, and means an upper limit operation angle at which the fully closed state is maintained. In the present specification, the flow adjustment operation angle θ0 is referred to as “fully closed operation angle θ0”.

Next, as shown in FIGS. 5 and 6, the flow adjustment operation angle θ ranges from an angle θ0 (for example, θ0 = 5 °) to an angle θ2 (for example, θ2 = 15 °) (θ0 <θ ≦ θ2) When the flow adjustment operation angle θ exceeds the fully closed state operation angle θ0, water discharge is started, and the flow rate of the water discharge can be adjusted within the low flow rate region (see FIG. 6). High flow control range. In this flow adjustment operation range (θ0 <θ ≦ θ2), the movable valve body 16 of the hot and cold mixing valve device 1 of the present embodiment slides further forward with respect to the fixed valve body 14 as the flow adjustment operation angle θ increases. By moving, both the hot water passage 14a and the water passage 14b of the fixed valve body 14 are gradually opened.
Further, in the flow regulation operating range (θ0 <θ ≦ θ2), as shown in FIG. 5, the increase of the rate of change of the total opening area S _T with increasing flow regulation operating angle theta in the case of the embodiment ( the "open area increase rate k1") is smaller than the amount of increase in the rate of change of the total opening area S _T with increasing flow regulation operation angle θ in the case of the comparative example (hereinafter "the opening area increase rate K1") and, the total opening area S _T of each aperture cross-section S1, S2 of Tsuyuro 14a and water passage 14b of the stationary valve member 14 in the case of the present embodiment, as compared with the comparative example, a small increase rate Gradually increase.

Further, as shown in FIG. 6, in the flow adjustment operation range (θ0 <θ ≦ θ2) when the flow adjustment operation angle θ is set from the angle θ0 to the angle θ2, the flow rate Q in this embodiment is 0 [L / Min] to Q1 [L / min] (for example, Q1 = 3.0 [L / min]), the rate of change in the amount of increase in the flow rate of hot water passing through the communication passage 16a of the movable valve body 16 (for example, Q1 = 3.0 [L / min]) Hereinafter, “flow rate increase rate m1”) when the flow rate Q in the comparative example increases from 0 [L / min] to Q2 [L / min] (for example, Q2 = 8.0 [L / min]). The rate of change in the amount of increase in the flow rate of hot water passing through the communication passage 16a of the movable valve body 16 (hereinafter referred to as “flow rate increase rate M1”) is smaller, and the hot water passage of the fixed valve body 14 in this embodiment. 14a and the water passage 14b from each of the communication passage 1 of the movable valve body 16 Flow rate Q flowing into a is compared with the comparative example, it is gradually increased with a small increase rate.
The flow adjustment operation angle θ2 (for example, θ2 = 15 °) is an intermediate flow rate operation angle between the angle θ0 and the angle θmax (for example, θmax = 25 °), and when the movable valve body 16 is fully opened. The operation angle at which the opening degree is smaller than the intermediate opening state (referred to as “intermediate opening state operation angle θ2” in this specification). Incidentally, in this specification, the operation angle at which both the hot water passage 14a and the water passage 14b of the fixed valve body 14 are opened in the fully opened state is referred to as “fully opened operation angle θmax”.

Further, as shown in FIGS. 5 and 7A, when the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), the movable valve body 16 fixes the flow adjustment operation angle θ. Both the hot water passage 14a and the water passage 14b of the valve body 14 are opened with the same opening cross-sectional areas S1 and S2.
Each of these opening cross-sectional areas S1 and S2 is symmetrical with respect to the central axis A5 in the front-rear direction of the fixed valve body 14 in the left-right direction. In the comparative example shown in FIG. 7B, the opening cross sectional areas S3 and S4 of the hot water passage 14a and the water passage 14b of the fixed valve body 14 are smaller than each other.
Therefore, as shown in FIG. 6, in this embodiment, the flow rate Q passing through the communication passage 16a of the movable valve body 16 from each of the hot water passage 14a and the water passage 14b of the fixed valve body 14 is also a movable valve according to a comparative example. It is narrowed down compared to the case of the body 16 '.

Furthermore, in this embodiment, as shown in FIGS. 6 and 7A, in the state where the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), the movable operation angle θ is movable. The flow rate Q1 of the hot water flowing through the communication passage 16a of the movable valve body 16 and flowing into the hot water mixing path 14c of the fixed valve body 14 (for example, Q1 = 3. 0 [L / min]) is half the flow rate Q _L (= Qmax / 2) (eg, Qmax / 2 = 5.0 [L] with respect to the maximum flow rate Qmax (eg, Qmax = 10.0 [L / min]). / Min]) in the low flow rate range.

  On the other hand, as shown in FIG. 6, in the comparative example when the flow adjustment operation angle θ is set from the angle θ0 to the angle θ2, the flow rate Q is from 0 [L / min] to within a high flow rate range larger than the flow rate Q1. The flow rate is increased to Q2 [L / min] (for example, Q2 = 8.0 [L / min]), and is almost at a flow rate increase rate M1 larger than the flow rate increase rate m1 of the hot and cold mixing valve device 1 of the present embodiment. It is increasing proportionally. In particular, in the comparative example, the flow rate Q increases in the low flow rate range from the angle θ0 to the angle θ1 (for example, θ1 = 12 °) larger than the angle θ0 and smaller than the angle θ2. However, when the angle θ1 is exceeded, the flow rate Q increases to the flow rate Q2 in the high flow rate region.

Next, as shown in FIG. 5, the flow adjustment operation from the intermediate opening state operation angle θ2 (for example, θ2 = 15 °) to the intermediate opening state operation angle θ3 (for example, θ3 = 20 °) as shown in FIG. range in (θ2 <θ ≦ θ3), increase the rate of change of the opening area S _T with increasing flow regulation operating angle theta in the case of the present embodiment (hereinafter "open area increase rate k2") is, flow adjustment The operation angle θ is larger than the opening area increase rate k1 in the flow adjustment operation range (θ0 <θ ≦ θ2) from the angle θ0 to the angle θ2 (for example, θ2 = 15 °) (k2> k1). That is, the total opening area S _T of the flow regulating operation range of the flow regulation operating angle theta is the angle .theta.2 to an angle θ3 (θ2 <θ ≦ θ3) is flow regulation operation from the flow regulation operating angle theta is the angle θ0 to the angle .theta.2 range compared to the total opening area S _T of (θ0 <θ ≦ θ2), increasing at a large rate of increase.

Further, as shown in FIG. 5, in the state where the flow adjustment operation angle θ is set to the intermediate open state operation angle θ3 (for example, θ3 = 20 °), the movable valve body 16 in the present embodiment fixes the fixed valve. Both the hot water passage 14a and the water passage 14b of the body 14 are opened with the same opening cross-sectional areas S1 and S2, and the total opening area S _T (= S1 + S2) is the flow adjustment operation angle θ is the intermediate open state operation angle θ2 ( For example, the opening cross-sectional areas S1 and S2 of the present embodiment are smaller than the opening cross-sectional areas S3 and S4 in the comparative example. Therefore, the flow rate is reduced as compared with the movable valve body 16 'according to the comparative example.

Furthermore, as shown in FIG. 6, the flow adjustment operation range from the intermediate adjustment state operation angle θ2 (for example, θ2 = 15 °) to the intermediate opening state operation angle θ3 (for example, θ3 = 20 °). In (θ2 <θ ≦ θ3), the flow rate Q in this embodiment is from Q1 [L / min] (for example, Q1 = 3.0 [L / min]) to Q3 [L / min] (for example, Q3 = Q _L = 5.0 [L / min]), the rate of change in the amount of increase in the flow rate of hot water passing through the communication passage 16a of the movable valve body 16 (hereinafter referred to as “flow rate increase rate m2”) The flow rate Q ranges from 0 [L / min] to Q1 [L / min] (for example, in the flow adjustment operation range (θ0 <θ ≦ θ2) from the angle θ0 to the angle θ2 (for example, θ2 = 15 °). Q1 = 3.0 [L / min]) when the communication passage 16a of the movable valve body 16 is increased. It becomes larger than the hot water flow rate of increase m1 to excessive.
That is, when the flow adjustment operation angle θ is set from the intermediate open state operation angle θ2 to the intermediate open state operation angle θ3, in the flow adjustment operation range (θ2 <θ ≦ θ3), water is discharged in the low flow rate range. The flow rate increase rate m2 is larger than the flow rate increase rate m1, and the discharge water flow rate in the low flow rate range can be adjusted.

Next, as shown in FIG. 5, the flow adjustment operation range from the intermediate adjustment state operation angle θ3 (for example, θ3 = 20 °) to the full-open state operation angle θmax (for example, θmax = 25 °). in (θ3 <θ ≦ θmax), the increase of the rate of change of the total opening area S _T with increasing flow regulation operating angle theta in the case of the present embodiment (hereinafter "open area increase rate k3") is, flow adjustment operation The angle θ is larger than the opening area increase rate k2 in the flow adjustment operation range (θ2 <θ ≦ θ3) from the angle θ2 (for example, θ2 = 15 °) to the angle θ3 (for example, θ3 = 20 °) and substantially constant. (K3 (= constant)> k2).
That is, the total opening area S _T of flow regulation operating range of the flow adjustment operation angle theta until fully open operating angle .theta.max from the intermediate open state operating angle θ3 (θ3 <θ ≦ θmax) from flow adjustment operation angle theta is the angle θ2 compared to the total opening area S _T of the flow regulating operation range to an angle θ3 (θ2 <θ ≦ θ3) , it has increased substantially proportionally with a large increasing rate.

Further, as shown in FIG. 5, in the state where the flow adjustment operation angle θ is set to the fully open state operation angle θmax (for example, θmax = 25 °), the movable valve body 16 in this embodiment fixes the fixed valve body. Both the hot water passage 14a and the water passage 14b are opened with the same opening cross-sectional areas S1 and S2, and the total opening area S _T (= S1 + S2) is the flow adjustment operation angle θ is the intermediate open state operation angle θ3 (for example, , Θ2 = 20 °) is larger than the state set. Moreover, each opening cross-sectional area S1, S2 in this embodiment is smaller than the opening cross-sectional areas S3, S4 in the comparative example only by the portions of the projections 32, 34, and the movable valve body 16 ′ according to the comparative example. The flow rate is reduced compared to.

Furthermore, as shown in FIG. 6, in the flow adjustment operation range (θ3 <θ ≦ θmax) when the flow adjustment operation angle θ is set from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, Flow rate Q increases from Q3 [L / min] (eg, Q3 = Q _L = 5.0 [L / min]) to Qmax [L / min] (eg, Qmax = 10.0 [L / min]) The rate of change in the amount of increase in the flow rate of hot water passing through the communication passage 16a of the movable valve body 16 (hereinafter referred to as “flow rate increase rate m3”) is that the flow adjustment operation angle θ is changed from the angle θ0 to the angle θ2 (for example, θ2 = The flow rate increase rate m1 of the hot water passing through the communication passage 16a of the movable valve body 16 in the flow adjustment operation range (θ0 <θ ≦ θ2) up to 15 °) and the flow adjustment operation angle θ are the angle θ2 (for example, θ2 = 15). °) to angle θ3 (eg, θ3 = 20 °) It becomes larger than the hot water flow rate of increase m2 passing through the communication passage 16a of the movable valve member 16 in the operating range (θ2 <θ ≦ θ3).
That is, in the flow adjustment operation range (θ3 <θ ≦ θmax) when the flow adjustment operation angle θ is set from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, water discharge is performed in the low flow rate region. The flow rate increase rate m3 is larger than the flow rate increase rates m1 and m2, and the hot water discharge flow rate in the high flow rate range can be adjusted.

Next, referring to FIGS. 5, 6, and 8, the temperature adjustment operation angle φ of the operation handle 4 of the hot and cold water mixing faucet device 2 is set to the maximum temperature adjustment operation angle φ1 (for example, φ1 = 50 ° on the hot water side). ) Is set to the temperature adjustment operation position P1 closest to the hot water side, and the operation of the hot / cold water mixing valve device 1 of the present embodiment when the flow adjustment operation angle θ is opened and closed within the range of 0 to 25 degrees. (Operation) will be described.
FIG. 8 (a) shows a hot water / mixing valve device according to the first embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set to the temperature control operation position closest to the hot water and the flow control operation angle is set to 15 degrees. It is a top view which shows the movable valve body and fixed valve body of the state which is set to 1 and is discharging only hot water. FIG. 8B is a comparative example of the movable valve body of the hot and cold water mixing valve device according to the first embodiment of the present invention shown in FIG. 8A. It is a top view which shows the movable valve body and the fixed valve body of the state in which this protrusion is not provided.

  As shown in FIGS. 5, 6, and 8, for the operation handle 4 of the hot and cold water mixing faucet device 2, the temperature adjustment operation angle φ is set to the maximum temperature adjustment operation angle φ1 on the hot water side and the temperature adjustment operation on the hot water side is performed. When the position P1 is set, the direction in which the movable valve body 16 opens and closes (the axial direction of the central axis A6 of the movable valve body 16) is predetermined with respect to the central axis A5 in the front-rear direction of the fixed valve body 14 in plan view. Regarding the operation handle 4 of the hot and cold water mixing faucet device 2 described above, except that only the hot water passage 14a of the fixed valve body 14 is opened and closed by the movable valve body 16 by being inclined by the temperature control operation angle φ1. This is common with the operation (action) when the temperature adjustment operation angle φ is set to the central temperature adjustment operation position P0 where the angle φ is 0 degree.

Further, as shown in FIGS. 5 and 6, the range of the flow adjustment operation angle θ from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3 when the movable valve body 16 is in the closed state (θ0 ≦ θ ≦ θ3) is set to be larger than the range (θ3 <θ ≦ θmax) of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the fully open state operation angle θmax. Further, when the flow adjustment operation angle θ increases when the operation is performed from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the communication passage 16a of the movable valve body 16 is changed from the hot water passage 14a of the fixed valve body 14. When the flow rate increase rate m1 and m2 of the passing hot water is operated from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, the flow adjustment operation angle θ increases and the flow rate from the hot water passage 14a of the fixed valve body 14 increases. It is set smaller than the flow rate increase rate m3 which is the rate of change of the flow rate increase amount of hot water passing through the communication passage 16a of the movable valve body 16.
Accordingly, when the hot water discharge only in the low flow rate region (Q ≦ Q _L ) of the hot and cold water mixing device 2 is required, the operation handle 4 of the hot and cold water mixing device 2 and the hot and cold water mixing valve device 1 By operating the operation lever member 24 in a large operation range (θ0 ≦ θ ≦ θ3) from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the movable valve is moved from the hot water passage 14a of the fixed valve body 14 to the movable valve. Only hot water that has passed through the communication passage 16a of the body 16 is discharged from the water outlet 6a of the hot and cold water mixing device 2 at a flow rate in the low flow rate region (Q ≦ Q _L ).
On the other hand, when water discharge only from the hot water in the high flow rate region (Q _L <Q ≦ Qmax) of the hot water / water mixing faucet device 2 is required, a small operation from the intermediate open state operation angle θ3 to the full open state operation angle θmax. By operating the operation handle 4 of the hot / cold water mixing faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 in a range (θ3 <θ ≦ θmax), the movable valve is moved from the hot water passage 14a of the fixed valve body 14 by flow control. Only the hot water that has passed through the communication passage 16a of the body 16 is discharged from the water outlet 6a of the hot and cold water mixing device 2 at a flow rate in the high flow rate region (Q _L <Q ≦ Qmax).

  Further, as described in a typical example, as shown in FIG. 8A, the flow adjustment operation angle θ is set to an intermediate open state operation angle θ2 (for example, θ2 = 15 °), and the movable valve body 16 is set. The opening cross-sectional area S1 of the hot water passage 14a of the fixed valve body 14 in a state of being opened by the movable valve body 16 ′ of the comparative example shown in FIG. 8B where the protrusions 32 and 34 are not provided. It is narrower than the opening cross-sectional area S3 of the hot water passage 14a to be opened.

Similarly, referring to FIGS. 5, 6, and 9, the temperature adjustment operation angle φ of the operation handle 4 of the hot and cold water mixing faucet device 2 is set to the maximum temperature adjustment operation angle φ2 on the water side (for example, φ2 = 50 °). ) And the temperature adjustment operation position P2 on the water side, and the operation of the hot and cold water mixing valve device 1 of the present embodiment when the flow adjustment operation angle θ is opened and closed within the range of 0 to 25 degrees ( Action) will be described.
FIG. 9 (a) shows a hot water / mixing valve device according to the first embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set at the most temperature side temperature control operation position and the flow control operation angle is 15 degrees. FIG. 9B is a plan view showing a movable valve body and a fixed valve body in a state where only water is discharged while being set to 1 and FIG. 9B is a first embodiment of the present invention shown in FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to FIG. 1, and is a plan view showing the movable valve body and the fixed valve body in a state in which no flow restricting projection is provided in the communication passage of the movable valve body.
As shown in FIGS. 5, 6, and 9, for the operation handle 4 of the hot and cold water mixing faucet device 2, the temperature adjustment operation angle φ is set to the maximum temperature adjustment operation angle φ2 on the water side and the temperature adjustment operation on the water side is performed. When the position P2 is set, the direction in which the movable valve body 16 opens and closes (the axial direction of the central axis A6 of the movable valve body 16) is predetermined with respect to the central axis A5 in the front-rear direction of the fixed valve body 14 in plan view. As for the operation handle 4 of the hot-water / water-mixing faucet device 2 described above, except for the point that only the water passage 14b of the fixed valve body 14 is opened and closed by the movable valve body 16 by being inclined by the temperature control operation angle φ2. This is the same as the operation (action) when the temperature adjustment operation position is set to the temperature adjustment operation position P0 where the adjustment operation angle φ is 0 degree.

  That is, as shown in FIGS. 5 and 6, the flow of the operation handle 4 of the hot and cold water mixing faucet device 2 and the operation lever member 24 of the hot and cold water mixing valve device 1 from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3. The range of the adjustment operation angle θ (θ0 ≦ θ ≦ θ3) is set to be larger than the range of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the full open state operation angle θmax (θ3 <θ ≦ θmax).

Further, when the flow adjustment operation angle θ increases when the operation is performed from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the water passage 14b of the fixed valve body 14 passes through the communication path 16a of the movable valve body 16. When the flow rate increase rate m1, m2, which is the change rate of the flow rate increase amount of the water to be operated, is operated from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, The flow rate increase rate m3, which is the rate of change of the flow rate increase amount of water passing through the communication passage 16a of the movable valve body 16 from the 14 water passages 14b, is set.
Accordingly, when water discharge only in the low flow rate region (Q ≦ Q _L ) of the hot and cold water mixing device 2 is required, the operation handle 4 of the hot and cold water mixing device 2 and the hot and cold water mixing valve device 1 are used. The operation lever member 24 is fluidly operated in a large operation range (θ0 ≦ θ ≦ θ3) from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, thereby moving the movable valve from the water passage 14b of the fixed valve body 14. Only the water that has passed through the communication passage 16a of the body 16 is discharged from the water discharge port 6a of the hot and cold water mixing device 2 at a flow rate in the low flow rate region (Q ≦ Q _L ).

On the other hand, when water discharge only in the high flow rate region (Q _L <Q ≦ Qmax) of the hot and cold water mixing faucet device 2 is required, it is small from the intermediate open state operation angle θ3 to the fully open state operation angle θmax. By operating the operation handle 4 of the hot / cold water faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 in the operating range (θ3 <θ ≦ θmax), the movable valve is moved from the water passage 14b of the fixed valve body 14. Only water that has passed through the communication passage 16a of the body 16 is discharged from the water discharge port 6a of the hot and cold water mixing device 2 at a flow rate within a high flow rate region (Q _L <Q ≦ Qmax).

  Further, as described in a typical example, as shown in FIG. 9A, the flow adjustment operation angle θ is set to an intermediate open state operation angle θ2 (for example, θ2 = 15 °), and the movable valve body 16 is set. The opening cross-sectional area S2 of the water passage 14b of the fixed valve body 14 in the state opened by the opening is opened by the movable valve body 16 ′ of the comparative example shown in FIG. 9B where the protrusions 32 and 34 are not provided. It is narrower than the opening cross-sectional area S4 of the water flow path 14b.

According to the hot water / mixing valve device 1 according to the first embodiment of the present invention described above, when adjusting the flow rate of hot water discharged from the water outlet 6a of the hot / cold water mixing device 2, the operation handle of the hot water mixing faucet device 6 is adjusted. 4 by rotating the operation lever member 24 within the range from the fully closed state operation angle θ0 to the fully open state operation angle θmax in a plane perpendicular to the sliding surface of the movable valve body 16 by the operation 4. The valve body 16 can be operated by sliding with respect to the fixed valve body 14 from the valve-closed state to the valve-opened state in which hot water with the maximum flow rate Qmax is allowed to pass.
Further, since the communication passage 16a of the movable valve body 16 is provided with projections 32 and 34 for restricting the flow rate, the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member 24 of the hot and cold water mixing valve device 1 are all provided. The flow rate Q1 of hot water passing through the communication passage 16a of the movable valve body 16 is maximized when the intermediate open state operation angle θ2 is set to an intermediate operation angle between the closed state operation angle θ0 and the fully open state operation angle θmax. Since it is set within a low flow rate region (Q ≦ Q _L ) less than half of the flow rate Qmax, at least the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member 24 of the hot and cold water mixing valve device 1 are at least fully closed. In the operation range which is set from the operation angle θ0 to the intermediate open state operation angle θ2 and is frequently used, water discharge is performed within a low flow rate region (Q ≦ Q _L ) after water discharge from the hot and cold water mixing device 2 is started. about It can be. Therefore, in the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water mixing device 2 and the operation lever member 24 of the hot / water mixing valve device 1, the usage frequency is high and the low flow rate region (Q ≦ Q _L The operation range (θ0 <θ ≦ θ3) in which water discharge is possible can be ensured large, so that the flow rate can be easily adjusted.

Further, according to the hot and cold water mixing valve device 1 according to the present embodiment, from the fully closed state operation angle θ0 when the movable valve body 16 is in the closed state, the fully closed state operation angle θ0 and the fully open state operation angle θmax are obtained. Range of the flow adjustment operation angle θ of the operation handle 4 of the hot and cold water mixing faucet device 2 and the operation lever member 24 of the hot water and water mixing valve device 1 up to the intermediate open state operation angle θ3 larger than the intermediate open state operation angle θ2 that is an intermediate value. (Θ0 ≦ θ ≦ θ3) is set to be larger than the range (θ3 <θ ≦ θmax) of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, and the fully closed state operation angle When increasing from θ0 to the intermediate open state operation angle θ3, the flow rate increase rates m1 and m2 are the rate of change of the flow rate increase amount of the hot water passing through the communication passage 16a of the movable valve body 16 as the flow adjustment operation angle θ increases. But intermediate open Flow rate increase rate m3 which is the rate of change of the flow rate increase amount of hot water passing through the communication passage 16a of the movable valve body 16 with the increase in the flow adjustment operation angle θ when operated from the state operation angle θ3 to the fully open state operation angle θmax. Is set smaller than. As a result, of the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water mixing faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1, the operation angle from the fully closed state to the intermediate open state operation angle. Most of the operation range up to θ3 (θ0 ≦ θ ≦ θ3) can be assigned as an operation range for realizing water discharge in the low flow rate region (Q ≦ Q _L ) and is fully opened from the second intermediate open state operation angle. A relatively small operation range up to the state operation angle can be assigned as an operation range for realizing water discharge within a high flow rate range (Q _L <Q ≦ Qmax).
Therefore, when water discharge in the low flow rate region (Q ≦ Q _L ) of the hot and cold water mixing device 2 is required, the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member of the hot and cold water mixing valve device 1 are used. 24 is flow controlled in a large operation range (θ0 ≦ θ ≦ θ3) from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, so that a low flow rate is obtained after water discharge from the hot and cold water mixing device 2 is started. Since water can be discharged in the region (Q ≦ Q _L ), the flow rate of the hot water passing through the communication passage 16a of the movable valve body 16 is finely adjusted with the flow rate increase rates m1 and m2 smaller than the flow rate increase rate m3. It can be carried out.
On the other hand, when water discharge in the high flow rate region (Q _L <Q ≦ Qmax) of the hot and cold water mixing faucet device 2 is required, a small operation range from the intermediate open state operation angle θ3 to the fully open state operation angle θmax ( By operating the operation handle 4 of the hot / cold water faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 with θ3 <θ ≦ θmax), hot water passing through the communication passage 16a of the movable valve body 16 is The flow rate can be quickly adjusted with a flow rate increase rate m3 larger than the flow rate increase rates m1 and m2, and the water can be discharged within a high flow rate range (Q _L <Q ≦ Qmax). Can be realized.

In addition, in the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water mixing faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1, water discharge in a low flow rate region (Q ≦ Q _L ) is realized. The intermediate open state operation angle θ3 which is the upper limit value of the operation range to be performed (θ0 ≦ θ ≦ θ3) is as close to 25 ° as possible when the overall state operation angle θmax is set to 25 degrees (θmax = 25 °). Is preferred.

Furthermore, according to the hot and cold water mixing valve device 1 according to the present embodiment, the flow restricting projections 32 and 34 are formed in the communication passage 16a of the movable valve body 16, and the base end portions B1 and B1 in the projections 32 and 34 are formed. The lengths h1 and h2 (see FIG. 4) from B2 to the tip portions T1 and T2 (see FIG. 4) are the minimum width dimensions (vertical lengths) in the cross sections of the hot water passage 14a and the water passage 14b of the fixed valve body 14, respectively. Dimensions) H1 and H2, more precisely, the opening / closing direction of the movable valve body 16 (the axial direction of the central axis A6 of the movable valve body 16) and the partition wall 14d between the hot water passage 14a and the water passage 14b of the fixed valve body 14 Since the minimum width dimensions (vertical dimensions) H1 and H2 of the flow passage sections of the fixed valve body 14 in the axial direction of the central axis A7 of the fixed valve body 14 are set to be smaller than the hot water. Operation hand of mixing faucet device 2 In the operation range (θ0 ≦ θ ≦ θ3) with a high usage frequency in which the operation lever member 24 of the valve 4 and the hot water / mixing valve device 1 is set at least from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the movable valve The opening areas S1 and S2 of the hot water passage 14a and the water passage 14b of the fixed valve body 14 opened by the body 16 can be appropriately narrowed by the protrusions 32 and 34, respectively. Therefore, water discharge can be effectively performed within the low flow rate region (Q ≦ Q _L ) after water discharge is started from the hot and cold water mixing faucet device 2, and the flow rate can be easily adjusted.
On the other hand, the operation handle 4 of the hot-water mixing faucet device 2 and the operation lever member 24 of the hot-water mixing valve device 1 are set from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, and the operation range (θ3 < (θ ≦ θmax), the hot water flowing into the communication passage 16a of the movable valve body 16 from at least one of the hot water passage 14a and the water passage 14b of the fixed valve body 14 easily passes around the protrusions 32 and 34. In addition, water can be discharged within a high flow rate range (Q _L <Q ≦ Qmax), and high operability for the user can be realized.

In addition, according to the hot and cold water mixing valve device 1 according to the present embodiment, the protrusions 32 and 34 of the movable valve body 16 are formed in a substantially arc shape in plan view, so that the operation of the hot and cold water mixing faucet device 2 is particularly performed. By adjusting the handle 4 and the operation lever member 24 of the hot water / mixing valve device 1, the flow rate adjustment is switched from the water discharge state in the low flow rate region (Q ≦ Q _L ) to the water discharge state in the high flow rate region (Q _L <Q ≦ Qmax). When performing, before and after switching the flow adjustment operation angle θ, the flow rate increase rates m1, m2, and m3 of the hot water passing through the communication passage 16a of the movable valve body 16 with the increase of the flow adjustment operation angle θ are nonlinearly changed. Since it can be changed, the flow rate can be adjusted more smoothly by changing the discharged water flow rate more smoothly.

  Furthermore, according to the hot and cold water mixing valve device 1 according to the present embodiment, the protrusions 32 and 34 of the movable valve body 16 are perpendicular to the straight line connecting the base ends B1 and B2 and the tip ends T1 and T2. The maximum width dimensions W1 and W2 in the direction (see FIG. 4) are distances between the water passage 14a and the water passage 14b of the fixed valve body 14, that is, more strictly, the water passage 14a of the fixed valve body 14. And the width dimension w1 (see FIG. 4) in the direction perpendicular to the central axis A7 of the partition wall 14d between the water passage 14b and the water passage 14b. Therefore, the protrusion 32 or the protrusion 34 of the communication passage 16a of the movable valve body 16 is fixed to the fixed valve body in accordance with the operation angles θ and φ of the operation handle 4 of the hot-water mixing faucet apparatus 2 and the operation lever member 24 of the hot-water mixing valve apparatus 1. 14, the protrusion 32 or the protrusion 34 has a flow passage cross section of each of the water passage 14 a and the water passage 14 b of the fixed valve body 14 in a state of being disposed between the water passage 14 a and the water passage 14 b. It can be partially narrowed reliably. Therefore, the flow rate can be effectively reduced with respect to the hot water flowing into the communication passage 16a of the movable valve body 16 from each of the hot water passage 14a and the water passage 14b of the fixed valve body 14.

Next, a hot and cold water mixing valve device according to a second embodiment of the present invention will be described with reference to FIGS.
FIG. 10 is a schematic plan view of a hot and cold water mixing faucet device in which a hot and cold water mixing valve device according to the second embodiment of the present invention is incorporated. It is the figure which demonstrated roughly the water side operation area | region which discharges only water and water. Further, FIG. 11 shows a hot water mixing valve device according to the second embodiment of the present invention, in which the operation handle of the hot water mixing faucet device is set to the central temperature control operation position (the front position of the hot water mixing faucet device). It is a top view which shows the movable valve body and fixed valve body of a fully-closed state and a fully-opened state when a tuning operation angle is set to 0 degree | times. Here, in the movable valve body 116 shown in FIG. 11, the fully closed movable valve body 116 is indicated by a solid line and symbol “C”, and the fully open movable valve body 116 is indicated by a chain line and symbol “O”. .

First, as shown in FIGS. 10 and 11, in the hot and cold water mixing valve device 100 according to the second embodiment of the present invention, only the structure of the fixed valve body 114 and the movable valve body 116 is the first aspect of the present invention described above. Unlike the structure of the fixed valve body 14 and the movable valve body 16 of the hot and cold water mixing valve device 1 according to the embodiment, the temperature adjustment operation angle φ of the operation handle 4 is set to 0 degree, and the temperature adjustment operation of the operation handle 4 is performed at the center. When the movable valve body 116 is opened by operating the flow adjustment operation angle θ in the state set at the position P0, only water is discharged from the water discharge port 6a of the spout 6 of the hot and cold water mixing device 2. This is different from the hot and cold water mixing valve device 1 according to the first embodiment of the present invention.
Therefore, in the hot and cold water mixing valve device 100 according to the second embodiment of the present invention and the hot and cold water mixing faucet device 2 in which the hot and cold water mixing valve device 100 is incorporated, the hot and cold water mixing valve according to the first embodiment of the present invention described above. The same parts as those of the apparatus 1 and the hot and cold water mixing valve apparatus 2 incorporating the hot and cold water mixing valve apparatus 1 are denoted by the same reference numerals, description thereof is omitted, and only different parts will be described.

As shown in FIG. 10, in the hot and cold water mixing operation region R100, the temperature adjustment operation angle φ of the operation handle 4 is rotated from 0 degree to the hot water side (“H side” in FIG. 10) by the temperature adjustment operation angle φ104. The temperature control operation angle φ can be operated from the hot water side (“H side” in FIG. 10) to the temperature control operation angle φ3.
The water side operation region R102 is a region in which the operation handle 4 can be operated from the temperature adjustment operation angle φ104 to the water side (“C side” in FIG. 10) to the temperature adjustment operation angle φ2. In particular, in the water-side operation region R102, when the operation handle 4 is set to the central temperature adjustment operation position P0 where the temperature adjustment operation angle φ is 0 degree, only water is discharged from the water outlet 6a of the hot and cold water mixing faucet device 2. The point discharged is different from the first embodiment described above.

As shown in FIG. 11, in the hot and cold water mixing valve device 100 according to the second embodiment of the present invention, the central axis A105 in the partition wall 14d of the fixed valve body 114 extends in the front-rear direction of the fixed valve body 114. Is inclined at a predetermined angle α [°].
Furthermore, in a plan view of the communication passage 116a formed in the substantially central part of the movable valve body 116 shown in FIG. 11, the hot water passage 114a side of the fixed valve body 114 with respect to the central axis A106 of the movable valve body 116 (FIG. 11). The inner wall portion of the region formed on the left side of the central axis A106 of the movable valve body 116 and on the front side of the substantially central C102 of the movable valve body 116 forms a protruding portion 116b that protrudes toward the inside of the communication passage 116a. Yes. In the structure of the protruding portion 116b, the flow adjustment is performed in a state where the temperature adjustment operation angle φ of the operation handle 4 shown in FIG. 10 is set to 0 degree and the operation handle 4 is set to the central temperature adjustment operation position P0. By operating the operating angle θ, the movable valve body 116 is moved forward in FIG. 11 so that the movable valve body 116 changes from the fully closed state C indicated by the solid line in FIG. 11 to the fully open state O indicated by the chain line in FIG. Only the hot water passage 114a of the fixed valve body 114 is closed by the protruding portion 116b of the movable valve body 116 shown by a chain line in FIG. 11, and the water passage 114b and the hot water mixing path 114c of the fixed valve body 114 are opened. It has become. Thereby, only water is discharged from the spout 6a of the spout 6 of the hot and cold water mixing device 2.

Furthermore, as shown in FIG. 11, in the hot and cold water mixing valve device 100 according to the second embodiment of the present invention, the front portion of the inner peripheral surface of the communication passage 116a of the movable valve body 116 is provided with a single flow restrictor. A protrusion 132 is provided, and this protrusion 132 functions as a flow restrictor that restricts the flow of hot water passing through the communication passage 16a of the movable valve body 16.
Further, in the protrusion 132 of the communication passage 116a of the movable valve body 116, the length h101 from the base end portion B101 to the distal end portion T101 is set smaller than the width dimension H100 in the front-rear direction of the protruding portion 116b. . Further, the length h101 of the projection 132 is the minimum width dimension (vertical dimension) H101, H102 in the flow passage cross sections of the hot water passage 114a and the water passage 114b of the fixed valve body 114, more strictly, the fixed valve body. 114. The minimum width dimension (vertical dimension) of the flow passage cross section of each of the hot water passage 14a and the water passage 14b of the fixed valve body 14 in the axial direction of the central axis A107 of the partition wall 114d between the hot water passage 114a and the water passage 114b. ) It is set smaller than H101 and H102.

Furthermore, as shown in FIG. 11, the protrusion 132 is formed in a substantially arc shape in plan view, and has a maximum width dimension W101 in a direction perpendicular to a straight line connecting the base end portion B101 and the tip end portion T101. Is a distance between the hot water passage 114a and the water passage 114b of the fixed valve body 114, that is, more strictly, in a direction perpendicular to the axial direction of the central axis A107 of the partition wall 114d of the fixed valve body 114. It is set to be larger than the width dimension w101.
By setting the dimensions of the fixed valve body 114 and the movable valve body 116, the flow adjustment operation angle θ is operated with the temperature adjustment operation angle φ of the operation handle 4 shown in FIG. Even when the body 116 is in the fully open state O shown by the chain line in FIG. 11, only the hot water passage 114a of the fixed valve body 114 is closed by the protruding portion 116b of the movable valve body 116 shown by the chain line in FIG. 114b and the hot and cold water mixing path 114c are opened, and only water is discharged from the spout 6a of the spout 6 of the hot and cold water mixing faucet device 2.

Next, the operation (action) of the hot and cold water mixing valve device 1 according to the second embodiment of the present invention described above will be described with reference to FIGS.
(A) of FIG. 12 is the hot water mixing valve apparatus by 2nd Embodiment of this invention, and sets the operation handle of the hot water mixing faucet apparatus to the center temperature control operation position (front position of the hot water mixing tap apparatus). FIG. 12B is a plan view showing the movable valve body and the fixed valve body in a state in which only the water is discharged with the flow adjustment operation angle set to 15 degrees. FIG. 12B is a plan view of FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to the second embodiment of the present invention, and includes a movable valve body and a fixed valve body in a state in which no projection for flow restriction is provided in the communication passage of the movable valve body. FIG.
FIG. 13A shows a hot water / mixing valve device according to the second embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set to the hot water side temperature control operation position and the flow control operation angle is set. It is a top view which shows the movable valve body and fixed valve body of the state which is setting 15 degree | times and is discharging only hot water, (b) of FIG. 13 is 2nd implementation of this invention shown to (a) of FIG. It is a comparative example with respect to the movable valve body of the hot / cold water mixing valve apparatus by a form, and is a top view which shows the movable valve body and fixed valve body of the state in which the protrusion for flow-rate throttling is not provided in the communicating path of the movable valve body.
Further, FIG. 14 (a) shows a hot water / mixing valve device according to the second embodiment of the present invention, in which the operating handle of the hot / cold water faucet device is set to the most water temperature control position and the flow control operation angle is set. It is a top view which shows the movable valve body and fixed valve body of the state which is set to 15 degree | times and is discharging only water, FIG.14 (b) is 2nd implementation of this invention shown to Fig.14 (a). It is a comparative example with respect to the movable valve body of the hot / cold water mixing valve apparatus by a form, and is a top view which shows the movable valve body and fixed valve body of the state in which the protrusion for flow-rate throttling is not provided in the communicating path of the movable valve body.

  Regarding the operation (action) of the hot and cold water mixing valve device 100 according to the second embodiment of the present invention, the flow control operation angle θ of the operation handle 4 of the hot and cold water mixing device 2, the communication path 116 a of the movable valve body 116, and The relationship between the hot water passage 114a of the fixed valve body 114 that communicates with the opening area S (= S101 + S102) of the water passage 114b in the operation (action) of the hot water / mixing valve device 1 according to the first embodiment of the present invention described above. This is qualitatively consistent with the relationship shown in FIG. Further, in the hot water / mixing valve device 100 according to the second embodiment of the present invention, the relationship between the flow adjustment operation angle θ of the operation handle 4 of the hot / cold water faucet device 2 and the flow rate Q is also described in the first embodiment of the present invention. The operation (action) of the hot and cold water mixing valve device 1 according to the form qualitatively matches the relationship shown in FIG. Therefore, in the description of the operation (action) of the hot and cold water mixing valve device 100 according to the second embodiment of the present invention, the diagrams corresponding to FIGS. 5 and 6 are omitted, and the flow adjustment operation angle θ and the fixed valve body 114 are When explaining the relationship between the open areas S101 and S102 of the hot water passage 114a and the water passage 114b and the relationship between the flow adjustment operation angle θ and the flow rate Q, the explanation will be given with reference to FIGS. 5 and 6 as appropriate. .

  First, as shown in FIGS. 5, 6, and 10 to 12, the operation handle 4 of the hot and cold water mixing faucet device 2 is set to the central temperature adjustment operation position P 0 where the temperature adjustment operation angle φ is 0 degree. When the flow adjustment operation angle θ is opened and closed within the range of 0 ° to 25 °, the flow adjustment operation angle θ of the operation handle 4 of the hot / cold water faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 is reduced. The range (θ0 ≦ θ ≦ θ3) is set larger than the range (θ3 <θ ≦ θmax) of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the fully open state operation angle θmax. Further, when the flow adjustment operation angle θ increases when the operation is performed from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the water passage 114b of the fixed valve body 114 passes through the communication path 116a of the movable valve body 116. When the flow rate increase rate m1, m2, which is the change rate of the flow rate increase amount of the water to be operated, is operated from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, the fixed valve body increases with the increase of the flow adjustment operation angle θ. The flow rate increase rate m3, which is the change rate of the flow rate increase amount of the water passing through the communication passage 116a of the movable valve body 116 from the water passage 114b of 114, is set.

As a result, when it is required to discharge only water in the low flow rate region of the hot-water mixing faucet device 2, the operation handle 4 of the hot-water mixing faucet device 2 and the operation lever member 24 of the hot-water mixing valve device 1 are all moved. By performing flow control in a large operation range (θ0 ≦ θ ≦ θ3) from the closed state operation angle θ0 to the intermediate open state operation angle θ3, the communication path 116a of the movable valve body 116 is changed from the water passage 114b of the fixed valve body 114. Only the water that has passed can be discharged from the water discharge port 6a of the hot and cold water mixing faucet device 2 within a low flow rate region (Q ≦ Q _L ).
On the other hand, when water discharge only with a high flow rate of the hot and cold water mixing device 2 is required, a small operation range from the intermediate open state operation angle θ3 to the fully open state operation angle θmax (θ3 <θ ≦ θmax). Then, the operation handle 4 of the hot / cold water mixing faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 are flow controlled to pass through the communication passage 116a of the movable valve body 116 from the water passage 114b of the fixed valve body 114. Only water can be discharged from the water outlet 6a of the hot and cold water mixing device 2 within a high flow rate range (Q _L <Q ≦ Qmax).

  Further, as described in a typical example, as shown in FIG. 12A, the flow adjustment operation angle θ is set to an intermediate open state operation angle θ2 (for example, θ2 = 15 °), and the movable valve body 116 is set. The opening cross-sectional area S102 of the water flow path 114b of the fixed valve body 114 in a state opened by the fixed valve body 114 is fixed by the movable valve body 116 ′ of the comparative example shown in FIG. It is narrower than the opening cross-sectional area S104 of the water passage 114b of the valve body 114.

  Similarly, as shown in FIGS. 5, 6, 10, 11, and 13, the temperature adjustment operation angle φ is set to the maximum temperature adjustment operation angle φ 1 on the hot water side with respect to the operation handle 4 of the hot and cold water mixing faucet device 2. When the temperature adjustment operation position P1 is set to the hot water side and the flow adjustment operation angle θ is opened and closed within the range of 0 to 25 degrees, the operation handle 4 and the hot water mixing valve of the hot water mixing faucet device 2 The range (θ0 ≦ θ ≦ θ3) of the flow adjustment operation angle θ of the operation lever member 24 of the apparatus 1 is the range of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the full open state operation angle θmax (θ3 <θ ≦ θmax). Further, when the flow adjustment operation angle θ increases when the operation is performed from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the communication passage 116a of the movable valve body 116 is changed from the hot water passage 114a of the fixed valve body 114. When the flow rate increase rate m1, m2, which is the rate of change of the flow rate increase rate of the passing hot water, is operated from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, the fixed valve It is set smaller than the flow rate increase rate m3, which is the rate of change of the flow rate increase amount of hot water passing through the communication passage 116a of the movable valve body 116 from the hot water passage 114a of the body 114.

Accordingly, when the hot water discharge only in the low flow rate region (Q ≦ Q _L ) of the hot and cold water mixing device 2 is required, the operation handle 4 of the hot and cold water mixing device 2 and the hot and cold water mixing valve device 1 By operating the operation lever member 24 in a large operation range (θ0 ≦ θ ≦ θ3) from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the movable valve is moved from the hot water passage 114a of the fixed valve body 114. Only hot water that has passed through the communication passage 116a of the body 116 can be discharged from the water outlet 6a of the hot and cold water mixing device 2 within a low flow rate region (Q ≦ Q _L ).
On the other hand, when water discharge only from the hot water in the high flow rate region (Q _L <Q ≦ Qmax) of the hot water / water mixing faucet device 2 is required, a small operation from the intermediate open state operation angle θ3 to the full open state operation angle θmax. By operating the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member 24 of the hot and cold water mixing valve device 1 in a range (θ3 <θ ≦ θmax), the movable valve is moved from the hot water passage 114a of the fixed valve body 114. Only hot water that has passed through the communication passage 116a of the body 116 can be discharged from the water outlet 6a of the hot and cold water mixing device 2 within a high flow rate region (Q _L <Q ≦ Qmax).

  Further, as described in a typical example, as shown in FIG. 13A, the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), and the movable valve body 116 is set. The opening cross-sectional area S101 of the hot water passage 114a of the fixed valve body 114 that is opened by the opening is opened by the movable valve body 116 ′ of the comparative example shown in FIG. The fixed valve body 114 is narrower than the opening cross-sectional area S103 of the hot water passage 114a.

  Similarly, as shown in FIGS. 5, 6, 10, 11, and 14, the temperature adjustment operation angle φ of the operation handle 4 of the hot and cold water mixing faucet device 2 is changed to the maximum temperature adjustment operation angle φ2 on the water side. When the water temperature adjustment operation position P2 is set and the flow adjustment operation angle θ is opened and closed within the range of 0 to 25 degrees, the operation handle 4 and the hot and cold water mixing valve of the hot and cold water mixing device 2 are used. The range (θ0 ≦ θ ≦ θ3) of the flow adjustment operation angle θ of the operation lever member 24 of the apparatus 1 is the range of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the full open state operation angle θmax (θ3 <θ ≦ θmax). Further, when the flow adjustment operation angle θ increases when the operation is performed from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, the water passage 114b of the fixed valve body 114 passes through the communication path 116a of the movable valve body 116. When the flow rate increase rate m1, m2, which is the change rate of the flow rate increase amount of the water to be operated, is operated from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, the fixed valve body increases with the increase of the flow adjustment operation angle θ. The flow rate increase rate m3, which is the change rate of the flow rate increase amount of the water passing through the communication passage 116a of the movable valve body 116 from the water passage 114b of 114, is set.

Accordingly, when water discharge only in the low flow rate region (Q ≦ Q _L ) of the hot / cold water mixing faucet device 2 is required, the operation handle 4 of the hot / cold water mixing faucet device 2 and the hot / cold water mixing valve device 1. By operating the control lever member 24 in a large operating range (θ0 ≦ θ ≦ θ3) from the fully closed state operating angle θ0 to the intermediate open state operating angle θ3, the movable valve is moved from the water passage 114b of the fixed valve body 114. Only the water that has passed through the communication passage 116a of the body 116 can be discharged from the water outlet 6a of the hot and cold water mixing device 2 within a low flow rate region (Q ≦ Q _L ).
On the other hand, when water discharge only in the high flow rate region (Q _L <Q ≦ Qmax) of the hot and cold water mixing faucet device 2 is required, it is small from the intermediate open state operation angle θ3 to the fully open state operation angle θmax. By operating the operation handle 4 of the hot / cold water faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 in the operating range (θ3 <θ ≦ θmax), the movable valve is moved from the water passage 114b of the fixed valve body 114. Only water that has passed through the communication passage 116a of the body 116 can be discharged from the water outlet 6a of the hot and cold water mixing device 2 within a high flow rate region (Q _L <Q ≦ Qmax).

  Further, as described in a typical example, as shown in FIG. 14A, the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), and the movable valve body 116 is set. The opening cross-sectional area S102 of the water flow path 114b of the fixed valve body 114 that is opened by the fixed valve body 114 is fixed by the movable valve body 116 ′ of the comparative example shown in FIG. The opening cross-sectional area S104 of the hot water passage 114a of the valve body 114 is narrower.

According to the hot and cold water mixing valve device 100 according to the second embodiment of the present invention described above, when adjusting the flow rate of hot water discharged from the water discharge port 6a of the hot and cold water mixing device 2, the operation handle of the hot and cold water mixing device 6. 4 by rotating the operation lever member 24 within the range from the fully closed state operation angle θ0 to the fully open state operation angle θmax in a plane perpendicular to the sliding surface of the movable valve body 16 by the operation 4. The valve body 16 can be operated by sliding with respect to the fixed valve body 14 from the valve-closed state to the valve-opened state in which hot water with the maximum flow rate Qmax is allowed to pass. In particular, only water is discharged from the spout 6a of the spout 6 of the hot and cold water mixing apparatus 2 by operating the flow adjustment operation angle θ with the operation handle 4 set to the central temperature adjustment operation position P0. Can do.
Further, since the communication passage 116a of the movable valve body 116 includes the protrusion 132 for restricting the flow rate, the operation handle 4 of the hot and cold water mixing faucet device 2 and the operation lever member 24 of the hot and cold water mixing valve device 1 are fully closed. The flow rate Q1 of hot water passing through the communication passage 16a of the movable valve body 16 is set to the maximum flow rate Qmax when the operation angle θ2 is set to an intermediate open state operation angle θ2, which is substantially an intermediate operation angle between the operation angle θ0 and the fully open state operation angle θmax. less than half of the low flow (Q ≦ Q _L) to be set to the region, in particular, the hot and cold water mixing faucet device 2 of the operating handle 4 and the hot and cold water mixing valve device 1 of the operating lever member 24 at least completely closed operating angle θ0 intermediate the open state operating angle θ2 frequency of use are set to a high operating range, low flow rate region from the water discharge from the mixing valve unit 2 is started (Q ≦ Q _L) to perform water discharge in the It can be. Therefore, in the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water mixing device 2 and the operation lever member 24 of the hot / water mixing valve device 1, the usage frequency is high and the low flow rate region (Q ≦ Q _L ) Can be secured in a large operating range (θ0 <θ <θ3) in which water can be discharged, so that the flow rate can be easily adjusted.

Further, according to the hot and cold water mixing valve device 100 according to the present embodiment, from the fully closed state operation angle θ0 when the movable valve body 116 is in the closed state, the fully closed state operation angle θ0 and the fully open state operation angle θmax are obtained. Range of the flow adjustment operation angle θ of the operation handle 4 of the hot and cold water mixing faucet device 2 and the operation lever member 24 of the hot water and water mixing valve device 1 up to the intermediate open state operation angle θ3 larger than the intermediate open state operation angle θ2 that is an intermediate value. (Θ0 ≦ θ ≦ θ3) is set to be larger than the range (θ3 <θ ≦ θmax) of the flow adjustment operation angle θ from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, and the fully closed state operation angle When the operation angle θ3 is operated from θ0 to the intermediate open state operation angle θ3, the flow rate increase rates m1 and m2 are the rate of change of the flow rate increase amount of the hot water passing through the communication passage 116a of the movable valve body 116 as the flow adjustment operation angle θ increases. The flow rate that is the rate of change of the flow rate increase amount of the hot water passing through the communication passage 116a of the movable valve body 116 with the increase in the flow adjustment operation angle θ when operated from the intermediate open state operation angle θ3 to the full open state operation angle θmax. It is set smaller than the increase rate m3. As a result, of the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water mixing faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1, the operation angle from the fully closed state to the intermediate open state operation angle. Most of the operation range up to θ3 (θ0 ≦ θ ≦ θ3) can be assigned as an operation range for realizing water discharge in the low flow rate region (Q ≦ Q _L ) and is fully opened from the second intermediate open state operation angle. A relatively small operation range up to the state operation angle can be assigned as an operation range for realizing water discharge in a high flow rate region (Q _L <Q ≦ Qmax).
Therefore, when water discharge in the low flow rate region (Q ≦ Q _L ) of the hot and cold water mixing device 2 is required, the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member of the hot and cold water mixing valve device 1 are used. 24 is flow controlled in a large operation range (θ0 ≦ θ ≦ θ3) from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, so that a low flow rate is obtained after water discharge from the hot and cold water mixing device 2 is started. Since water can be discharged in the region, the flow rate of hot water passing through the communication passage 116a of the movable valve body 116 can be finely adjusted with the flow rate increase rates m1 and m2 smaller than the flow rate increase rate m3.
On the other hand, when water discharge in the high flow rate region (Q _L <Q ≦ Qmax) of the hot and cold water mixing faucet device 2 is required, a small operation range from the intermediate open state operation angle θ3 to the fully open state operation angle θmax ( By operating the operation handle 4 of the hot / cold water faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 1 with θ3 <θ ≦ θmax), hot water passing through the communication passage 116a of the movable valve body 116 is obtained. The flow rate can be quickly adjusted with a flow rate increase rate m3 larger than the flow rate increase rates m1 and m2, and the water can be discharged within a high flow rate range (Q _L <Q ≦ Qmax). Can be realized.

In the second embodiment of the present invention, a low flow rate region (0 ≦ θ ≦ θmax) of the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 100. The intermediate open state operation angle θ3, which is the upper limit value of the operation range (θ0 ≦ θ ≦ θ3) for realizing water discharge of Q ≦ Q _L ), is set when the overall state operation angle θmax is set to 25 degrees (θmax = 25 °). It is preferable that the angle be as close to 25 ° as possible.

Furthermore, according to the hot and cold water mixing valve device 100 according to the present embodiment, the flow rate restricting protrusion 132 is formed in the communication passage 16a of the movable valve body 116, and the protrusion 132 has a base end portion B101 to a distal end portion T101. The lengths h101 and h102 (see FIG. 11) are the minimum width dimensions (vertical dimensions) H1 and H2, respectively, in the flow passage sections of the hot water passage 114a and the water passage 114b of the fixed valve body 114, more precisely. The minimum width of the flow passage cross section of each of the hot water passage 14a and the water passage 14b of the fixed valve body 14 in the axial direction of the central axis A107 of the partition wall 14d between the hot water passage 14a and the water passage 14b of the fixed valve body 114 is shown. Since the dimensions (vertical dimensions) are set smaller than H101 and H102, the operation handle 4 of the hot and cold water mixing faucet device 2 and the operation lever member of the hot and cold water mixing valve device 1 are used. 4 is set at least from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, and in the frequently used operation range (θ0 ≦ θ ≦ θ3), the passage of the fixed valve body 114 opened by the movable valve body 116 is performed. The opening areas S101 and S102 of the hot water passage 114a and the water passage 114b can be appropriately narrowed by the protrusions 132. Therefore, water discharge can be effectively performed within the low flow rate region (Q ≦ Q _L ) after water discharge is started from the hot and cold water mixing faucet device 2, and the flow rate can be easily adjusted.
On the other hand, the operation handle 4 of the hot-water mixing faucet device 2 and the operation lever member 24 of the hot-water mixing valve device 1 are set from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, and the operation range (θ3 < (θ ≦ θmax), it is easy for hot water flowing into the communication passage 116a of the movable valve body 116 from at least one of the hot water passage 114a and the water passage 114b of the fixed valve body 114 to pass through the periphery of the protrusion 132. Water discharge can be performed within the region (Q _L <Q ≦ Qmax), and high operability for the user can be realized.

In addition, according to the hot and cold water mixing valve device 100 according to the present embodiment, the protrusion 132 of the movable valve body 116 is formed in a substantially arc shape in plan view, and in particular, the operation handle 4 of the hot and cold water mixing faucet device 2 and When adjusting the flow rate to switch from the water discharge state in the low flow rate region (Q ≦ Q _L ) to the water discharge state in the high flow rate region (Q _L <Q ≦ Qmax) by operating the operation lever member 24 of the hot water mixing valve device 100. The flow rate increase rates m1, m2, and m3 of the hot water passing through the communication passage 116a of the movable valve body 116 are changed nonlinearly before and after the flow adjustment operation angle θ is switched. Therefore, fine adjustment of the flow rate can be performed by changing the water discharge flow rate more smoothly.

  Furthermore, according to the hot and cold water mixing valve device 100 according to the present embodiment, the projection 132 of the movable valve body 116 has the maximum width dimension W101 in the direction perpendicular to the straight line connecting the base end portion B101 and the distal end portion T101 (see FIG. 11) is a distance between the hot water passage 114a and the water passage 114b of the fixed valve body 114, that is, more strictly, a partition wall that partitions the hot water passage 114a and the water passage 114b of the fixed valve body 114. Since it is set to be larger than the width dimension w101 of 114d (see FIG. 4), it is movable according to the operation angles θ and φ of the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member 24 of the hot and cold water mixing valve device 100. When the protrusion 132 of the communication passage 116a of the valve body 116 is disposed between the hot water passage 114a and the water passage 114b of the fixed valve body 114, the protrusion 132 is fixed. The flow passage cross sections of the hot water passage 114a and the water passage 114b of the valve body 114 can be partially narrowed reliably. Therefore, the flow rate can be effectively reduced with respect to the hot water flowing into the communication passage 116a of the movable valve body 116 from each of the hot water passage 114a and the water passage 114b of the fixed valve body 114.

Next, a hot and cold water mixing valve device according to a third embodiment of the present invention will be described with reference to FIGS.
FIG. 15 shows a hot water mixing valve device according to a third embodiment of the present invention, wherein the operation handle of the hot water mixing faucet device is set to the central temperature control operation position (front position of the hot water mixing faucet device) and the flow control operation is performed. It is a top view which shows the movable valve body and fixed valve body of a fully-closed state and a fully-opened state when an angle is set to 0 degree | times. Here, in the movable valve body 216 shown in FIG. 15, the fully closed movable valve body 216 is indicated by a solid line and a symbol “C”, and the fully open movable valve body 216 is indicated by a chain line and a symbol “O”. .
Moreover, (a) of FIG. 16 is the hot water mixing valve apparatus by 3rd Embodiment of this invention. WHEREIN: The operation handle of the hot water mixing faucet apparatus is made into the center temperature control operation position (front position of the hot water mixing faucet apparatus). FIG. 16B is a plan view showing the movable valve body and the fixed valve body in a state where the flow adjustment operation angle is set to 15 degrees and only water is discharged, and FIG. 16B is a plan view of FIG. ) Is a comparative example for the movable valve body of the hot and cold water mixing valve device according to the third embodiment of the present invention, and is fixed to the movable valve body in a state in which the flow restricting taper portion is not provided in the communication passage of the movable valve body. It is a top view which shows a valve body.
Furthermore, (a) of FIG. 17 is the hot water / mixing valve device according to the third embodiment of the present invention, in which the operation handle of the hot / cold water faucet device is set to the hot water side temperature control operation position and the flow control operation angle is set. It is a top view which shows the movable valve body and fixed valve body of the state which is setting 15 degree | times and is discharging only hot water, (b) of FIG. 17 is 3rd implementation of this invention shown to (a) of FIG. It is a comparative example with respect to the movable valve body of the hot / cold water mixing valve apparatus by a form, and is a top view which shows the movable valve body and fixed valve body in the state in which the taper part for flow-rate throttling is not provided in the communicating path of the movable valve body.
FIG. 18A shows a hot water / mixing valve device according to the third embodiment of the present invention, in which the operation handle of the hot / cold water faucet device is set to the most temperature side temperature control operation position and the flow control operation angle is set. It is a top view which shows the movable valve body and fixed valve body of the state which is setting 15 degrees and is discharging water only, (b) of FIG. 18 is 3rd of this invention shown to (a) of FIG. It is a comparative example with respect to the movable valve body of the hot and cold water mixing valve device according to the embodiment, and is a plan view showing the movable valve body and the fixed valve body in a state where the communication passage of the movable valve body is not provided with a taper for flow restriction. .

Here, in the hot and cold water mixing valve device 200 according to the third embodiment of the present invention shown in FIGS. 15 to 18A, only the structure of the communication passage 216a of the movable valve body 216 is the second of the present invention described above. It differs from the structure of the communicating path 116a of the movable valve body 116 of the hot and cold water mixing valve device 100 according to the embodiment.
Therefore, in the hot and cold water mixing valve device 200 according to the third embodiment of the present invention, the same parts as those of the hot and cold water mixing valve device 100 according to the second embodiment of the present invention described above are denoted by the same reference numerals, and description thereof is omitted. Only the different parts will be described.

First, as shown in FIG. 15, in the hot and cold water mixing valve device 200 according to the third embodiment of the present invention, the central axis A206 of the movable valve body 216 in the plan view of the communication passage 216a of the movable valve body 216 shown in FIG. The inner wall portion of the region formed on the hot water passage 114a side of the fixed valve body 114 (on the left side of the central axis A206 in FIG. 15) and located substantially in front of the center C202 of the movable valve body 216 is a communication path. A protruding portion 216b that protrudes toward the inside of 216a is formed. In such a structure of the protruding portion 216b, the temperature adjustment operation angle φ of the operation handle 4 shown in FIG. 10 is set to 0 degree, and the operation handle 4 is set to the center temperature adjustment operation position P0. Even if the adjustment operation angle θ is operated and the movable valve body 216 is moved forward in FIG. 15, the movable valve body 216 changes from the fully closed state C indicated by the solid line in FIG. Only the hot water passage 114a of the fixed valve body 114 is closed by the protruding portion 216b of the movable valve body 216 indicated by a chain line in FIG. 15, and the water passage 114b and the hot water mixing path 114c of the fixed valve body 114 are opened. It has become. Thereby, only water is discharged from the spout 6a of the spout 6 of the hot and cold water mixing device 2.
Further, as a flow restrictor for restricting the flow rate of hot water passing through the communication passage 216a of the movable valve body 216, a central axis A206 in the front-rear direction of the movable valve body 216 at the front portion of the inner peripheral surface of the communication passage 116a of the movable valve body 216 On the other hand, a tapered portion 232 having a tapered shape on one side is provided. In the taper portion 232, as shown in FIG. 15, the taper surface 232a that is the surface of the taper portion 232 has a predetermined taper angle β [°] (for example, with respect to the central axis A206 of the movable valve body 216 in plan view). , Β = 45 °). In addition, about taper angle (beta), it is preferable to set to 30 degrees-60 degrees, it is more preferable to set to 40 degrees-50 degrees, and it is most preferable to set to 45 degrees.
Further, in the tapered surface 232a of the communication passage 216a of the movable valve body 216, the width dimension h201 in the front-rear direction from the front end portion to the rear end portion is set smaller than the width dimension H200 in the front-rear direction of the protruding portion 216b. ing. By setting these dimensions, the movable valve body 216 is fully opened as indicated by the chain line in FIG. 15 by operating the flow adjustment operation angle θ with the temperature adjustment operation angle φ of the operation handle 4 shown in FIG. Even in the case of O, only the hot water passage 114a of the fixed valve body 114 is closed by the protruding portion 116b of the movable valve body 116 shown by a chain line in FIG. 11, and the water passage 114b and the hot water mixing passage 114c are opened. Only water is discharged from the spout 6 a of the spout 6 of the mixing faucet device 2.

  Further, as described in a typical example, the operation handle 4 of the hot and cold water mixing faucet device 2 is set to the central temperature adjustment operation position P0 where the temperature adjustment operation angle φ is 0 degrees, and FIG. When the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), the flow path 114b of the fixed valve body 114 in the state opened by the movable valve body 216 is shown in FIG. The opening cross-sectional area S202 is narrower than the opening cross-sectional area S204 of the water passage 114b of the fixed valve body 114 opened by the movable valve body 216 ′ of the comparative example shown in FIG. 15B where the tapered portion 232 is not provided. It has been.

  Similarly, for the operation handle 4 of the hot and cold water mixing faucet device 2, the temperature adjustment operation angle φ is set to the maximum temperature adjustment operation angle φ1 on the hot water side and set to the temperature adjustment operation position P1 on the hot water side. As shown in a), when the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), the hot water flow of the fixed valve body 114 opened by the movable valve body 216 The opening cross-sectional area S201 of the passage 114a is the opening cross-sectional area of the hot water passage 114a of the fixed valve body 114 opened by the movable valve body 216 ′ of the comparative example shown in FIG. 17B where the tapered portion 232 is not provided. It is narrower than S203.

  Further, similarly, for the operation handle 4 of the hot and cold water mixing faucet device 2, the temperature adjustment operation angle φ is set to the maximum temperature adjustment operation angle φ2 on the water side and set to the temperature adjustment operation position P2 on the water side. When the flow adjustment operation angle θ is set to the intermediate open state operation angle θ2 (for example, θ2 = 15 °), the fixed valve body 114 opened by the movable valve body 216 is shown in FIG. The opening cross-sectional area S202 of the water passage 114b is the opening cross-sectional area of the water passage 114b of the fixed valve body 114 opened by the movable valve body 216 ′ of the comparative example shown in FIG. It is narrower than S204.

According to the hot and cold water mixing valve device 200 according to the third embodiment of the present invention described above, the peripheral surface portion in the communication passage 216a of the movable valve body 216 facing the hot water passage 114a and the water passage 11b of the fixed valve body 114. A flow restricting taper portion 232 formed in a tapered shape inclined at a predetermined taper angle β with respect to the central axis A206 of the movable valve body 216 is employed so that a part of the flow passage section of the communication passage 216a is narrowed. Accordingly, the operation handle 4 of the hot and cold water mixing faucet device 2 and the operation lever member 24 of the hot and cold water mixing valve device 200 are set at least from the fully closed state operation angle θ0 to the intermediate open state operation angle θ3, and the operation range with high use frequency. In (θ0 ≦ θ ≦ θ3), the opening areas S201 and S202 of the hot water passage 114a and the water passage 114b of the fixed valve body 114 opened by the movable valve body 216 are defined. It can be appropriately narrowed by over path 232. Therefore, in the entire operation range (0 ≦ θ ≦ θmax) of the operation handle 4 of the hot / cold water mixing faucet device 2 and the operation lever member 24 of the hot / cold water mixing valve device 200, the usage frequency is high and the low flow rate region (Q ≦ Q _L ) Can be secured in a large operating range (θ0 <θ ≦ θ3), so that the flow rate can be easily adjusted, and the water discharge is effective within a low flow rate range (Q ≦ Q _L ). The flow rate can be easily adjusted. On the other hand, the operation handle 4 of the hot and cold water mixing device 2 and the operation lever member 24 of the hot and cold water mixing valve device 200 are set from the intermediate open state operation angle θ3 to the fully open state operation angle θmax, and the operation range state (θ3 <Θ ≦ θmax), the hot water flowing into the communication passage 216a of the movable valve body 216 from at least one of the hot water passage 114a and the water passage 114b of the fixed valve body 114 is likely to pass through the taper portion 232. Water discharge can be performed within the region (Q _L <Q ≦ Qmax), and high operability for the user can be realized.

1 Hot water and water mixing valve device 2 Hot water and water mixing faucet device (hot water and water mixing faucet)
2a Hot and cold water faucet body (hot water and water faucet)
4 Operation handle 4a Operation handle body 4b Tip of operation handle 6 Spout 6a Water outlet 8 Counter 10 Lower casing member (casing)
10a Hot water passage 10b Water passage 10c Hot water mixing passage 12 Seal member 14 Fixed valve body 14a Hot water passage of fixed valve body 14b Water passage of fixed valve body 14c Hot water mixing passage of fixed valve body 14d Hot water passage of fixed valve body Partition wall with water passage 16 Movable valve body 16a Movable valve body communication path 16 'Movable valve body (comparative example)
16a 'movable valve body communication path (comparative example)
18 Net member 20 Movable valve element guide member 20a Protruding portion 20b Fitting hole 22 Holding member 22a Through hole 24 Operation lever member (operation lever portion)
24a Lower end portion of operation lever member 24b Upper end portion of operation lever member 24c Intermediate portion of operation lever member 26 Seal member 28 Upper casing member (casing)
28a Insertion hole 30 Connecting member 32 Flow restrictor projection (flow restrictor)
34 Protrusion for flow restrictor (flow restrictor)
114 Fixed valve body 114a Hot water passage for fixed valve body 114b Water passage for fixed valve body 114c Hot water mixing passage for fixed valve body 114d Partition wall between hot water passage and water passage for fixed valve body 116 Movable valve body 116a Movable valve body Communicating passage 116b Projecting portion 116 'of movable valve body communicating passage 116' Movable valve body (comparative example)
116a 'movable valve body communication path (comparative example)
132 Protrusion for flow restrictor (flow restrictor)
216 Movable valve element 216a Movable valve element communication path 216b Movable valve element communication path protrusion 216 'Movable valve element (comparative example)
216a 'movable valve body communication path (comparative example)
232 Taper for flow restriction of communication path of movable valve body (flow restriction part)
232a Tapered surface (flow restrictor) of the tapered portion for restricting the flow rate of the communication passage of the movable valve element
A1 Operating axis A2 Operating axis A3 Longitudinal axis perpendicular to the operating axis A2 A4 Longitudinal axis of the operating lever member A5 Central axis in the longitudinal direction of the fixed valve element A6 Central axis in the longitudinal direction of the movable valve element A7 Fixed Center axis of the partition wall of the valve body A105 Center axis of the fixed valve body in the front-rear direction A106 Center axis of the movable valve body in the front-rear direction A107 Center axis of the partition wall of the fixed valve body B1 Base end of the projection B2 Base end of the projection C Fully-closed movable valve body C1 Center of the tip of the operation handle C2 Center of the movable valve body C102 Center of the movable valve body C202 Center of the movable valve body H1 Movable valve body in the flow path section of the hot water passage of the fixed valve body Width dimension in the opening and closing direction H2 Width dimension in the opening and closing direction of the movable valve body in the flow passage section of the water passage of the fixed valve body H100 Width dimension in the front-rear direction of the protruding portion of the movable valve body H101 Hot water passing through the fixed valve body Minimum width dimension in the cross section of the flow path H102 Minimum width dimension in the flow path section of the water passage of the fixed valve body H200 Width dimension in the front-rear direction of the projecting portion of the movable valve body h1 From the proximal end portion to the distal end portion of the protrusion Length h2 Length from the base end to the tip of the protrusion h201 Width dimension in the front-rear direction of the taper portion for flow restriction of the communication passage of the movable valve body K1 Opening area increase rate k1 Opening area increase rate k2 Opening area increase rate k3 Opening area increase rate M1 Flow rate increase rate m1 Flow rate increase rate m2 Flow rate increase rate m3 Flow rate increase rate O Fully open movable valve body P0 Temperature adjustment operation position P1 Temperature adjustment operation position P2 Temperature adjustment operation position Q Flow rate Q1 Flow rate Q2 Flow rate Q3 Flow rate QL Flow rate Qmax Maximum flow rate R0 Hot water mixing operation region R100 Hot water mixing operation region R1 Hot water side operation region R2 Water side operation region R102 Water side operation region S1 Hot water passing through the fixed valve body Cross-sectional area of the opening S2 Cross-sectional area of the passage of the fixed valve body T1 Tip of the protrusion T2 Tip of the protrusion W1 Maximum width of the protrusion W2 Maximum width of the protrusion w1 Between the hot water passage and the water passage of the fixed valve body Width dimension in the horizontal direction α β of the fixed valve element Taper angle of the taper part of the communication path of the movable valve element θ Flow adjustment angle of the operation handle θ0 Flow adjustment operation angle of the operation handle (fully closed state operation angle)
θ1 Flow adjustment angle of operation handle θ2 Flow adjustment angle of operation handle (first intermediate open state operation angle)
θ3 Flow adjustment angle of operation handle (second intermediate open state operation angle)
θmax Maximum flow control operation angle of the operation handle φ Temperature control operation angle of the operation handle φ1 Maximum temperature control operation angle on the hot water side of the operation handle φ2 Maximum temperature control operation angle on the water side of the operation handle φ3 Temperature control operation angle of the operation handle φ4 Temperature control operation angle of operation handle φ104 Temperature control operation angle of operation handle

Claims (6)

A hot and cold water mixing valve device that is incorporated in a hot and cold water mixing faucet that stops hot water and can adjust the temperature and flow rate of hot water discharged according to the operation of the operation part of the hot and cold water mixing faucet,
A casing,
A fixed valve body that is fixed in the casing and has a water passage through which hot water supplied from a hot water source flows and a water passage through which water supplied from the water supply source passes;
A movable valve body that is provided in the casing and opens and closes a hot water passage and a water passage of the fixed valve body by sliding with respect to the fixed valve body, and when the movable valve body is in an open state. The movable valve body formed with a communication passage capable of communicating with at least one of the hot water passage and the water passage of the fixed valve body;
The operation unit of the hot and cold water mixing faucet is connected to the movable valve body, and the operation part of the hot water and water mixing faucet is rotated within a predetermined operating angle range in a direction intersecting the sliding surface of the movable valve body. An operation lever portion for operating the movable valve body from the closed state to the open state by moving,
The predetermined operation angle includes a fully closed state operation angle in which the hot water passage and the water passage of the fixed valve body are closed by the movable valve body, and hot water passing through the communication passage of the movable valve body. At least one of the hot water passage and the water passage of the fixed valve body is opened in the fully opened state by the movable valve body, the fully closed state operation angle, and the fully opened state. An intermediate open state operation angle that is between the state operation angle and is in an intermediate open state with an opening smaller than that when the movable valve body is in the fully open state,
The communication path of the movable valve body is configured to reduce a flow rate of hot water passing through the communication path when the intermediate open state operation angle is an approximately intermediate operation angle between the fully closed state operation angle and the fully open state operation angle. A hot and cold water mixing valve device comprising a flow restrictor set in a low flow rate region less than half of the maximum flow rate.   The intermediate open state operation angle is an operation angle that is an intermediate value between the fully closed state operation angle and the fully open state operation angle, and a first intermediate opening that sets the movable valve body to a first intermediate open state. A second intermediate opening that sets a state operation angle and a second intermediate opening state that is larger than the first intermediate opening state operation angle and that has a larger opening than the first intermediate opening state. A state operation angle, and when the operation portion and the operation lever portion of the hot and cold water mixing faucet are operated from the fully closed state operation angle to the second intermediate open state operation angle, the operation angle increases. The first flow rate increase rate, which is the rate of change of the flow rate increase amount of hot water passing through the communication passage, is that the operation portion and the operation lever portion of the hot and cold water mixing faucet are fully opened from the second intermediate open state operation angle. Increased operating angle when operating to state operating angle With it hot water flow rate increase in the rate of change in a second hot and cold water mixing valve apparatus according to claim 1, wherein it is set smaller than the flow rate increase rate passing through the communication passage.   The flow restrictor of the communication passage is formed as a protrusion, and the length from the base end to the tip of the protrusion is based on the width dimension of the flow passage cross section of the fixed valve body and the water passage. The hot and cold water mixing valve device according to claim 1, wherein the hot water / water mixing valve device is set to be smaller.   The hot and cold water mixing valve device according to claim 3, wherein the protrusion is formed in a substantially arc shape in a plan view.   5. The hot and cold water mixing valve device according to claim 3, wherein a width dimension of the protrusion is set to be larger than a distance between the hot water passage and the water passage of the fixed valve body in a plan view. .   The flow restrictor of the communication passage is movable so that a part of the peripheral surface in the communication passage facing the hot water passage and the water passage of the fixed valve body narrows the flow passage cross section of the communication passage. The hot and cold water mixing valve device according to claim 1 or 2, wherein the hot water / water mixing valve device is formed in a tapered shape inclined at a predetermined angle with respect to the longitudinal direction of the valve body.

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