JP2604849Y2 - Hot water mixer tap - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing tap in which water and hot water supply parts are arranged on the left and right sides of a main body and a water outlet is arranged in a central part side. The present invention relates to a hot and cold water mixing tap which is adapted to rectify water from a spout.

[0002]

2. Description of the Related Art The simplest type of hot water mixer tap for mixing and discharging water and hot water has a water valve on the right side of the main body and a hot water valve on the left side of the main body. It is equipped with a water discharge pipe protruding into the water. The valves for water and hot water are opened and closed by operating handles connected to them, and the temperature of the mixed water is set by the mixing ratio of water and hot water according to the degree of opening.

[0003] When a hot and cold water mixing tap is used, for example, in an ordinary household, a main body is connected to a water supply pipe and a hot water supply pipe. In this case, the water supply pipe is often a branch pipe from the tap water pipe, and the hot water supply pipe is connected to, for example, an electric water heater.

In such water supply and hot water supply pipes, the pressure is higher on the water supply side directly connected to the tap water pipe, and lower on the hot water supply side. For this reason, even if the water side and the hot water side are set to, for example, the same valve opening by the operation handle, the amount of inflow into the main body is large because the pressure on the water supply side is high. Therefore, if the water discharge pipe is located at the center of the main body, not only the mixing of the water and the hot water is not sufficient, but also the tendency of the water to be discharged in advance becomes strong, and inconvenience is likely to occur particularly when starting to use.

On the other hand, for example, Japanese Utility Model Publication No. 56-326
As described in Japanese Patent Publication No. 90-90, there is a configuration in which a protruding wall that obstructs the flow is provided in a flow path from an inflow portion on a water side and a hot water side to a discharge pipe, thereby promoting mixing. . If such a protruding wall is provided, even if there is a difference in supply pressure between water supply and hot water supply, the discharge wall acts to agitate the flow toward the discharge port side, so that the advance discharge of water and Insufficient mixing can be suppressed.

[0006]

However, even though mixing can be promoted by the protruding wall, the flow of the mixed water toward the discharge pipe is discharged while receiving the propagation of agitation by the protruding wall. The turbulence of the flow of the mixed water in the internal flow path up to the discharge pipe can be regarded as a continuation of the pressure fluctuation of the internal flow when viewed from the cross section of the flow path. This effect also appears.

[0007] For example, if the pressure fluctuation is severe, the water discharge from the discharge pipe will be subtly affected, and the water discharge will be unstable. The streamlines are twisted and give an unnatural feeling.

[0008] By providing the protruding wall in this way, water supply,
Although the mixing failure due to the difference in hot water supply pressure can be eliminated, there is a face to be improved from the viewpoint of preparing the mixed water finally discharged.

The problem to be solved in the present invention is to provide a hot water mixer tap which can mix water and hot water sufficiently and can discharge it as a regular flow even if there is a difference between the water supply pressure and the hot water supply pressure. .

[0010]

According to the present invention, a water supply port and a hot water supply port are provided on a main body so as to be separated from each other, and a water discharge pipe projects from the main body substantially at the center between the water supply port and the hot water supply port. A water mixing tap, comprising a throttle portion for reducing flow cross-section inside the water discharge pipe and rectifying a flow toward a water discharge port at a tip, and the throttle portion has the following configuration. Features.

The throttle portion is formed by a rectifying wall rising on a bottom wall inside the water discharge pipe, and the rectifying wall has a cutout whose central portion is lower than the remaining left and right portions. In addition, the flow regulating wall may protrude downward from the upper wall inside the water discharge pipe, and may be provided with a cutout at the center thereof so that the cross section of the flow path becomes larger than the remaining left and right portions.

Further, a guide wall may be provided inside the water discharge pipe to divide the cross section of the flow path into a plurality in the width direction.

[0013]

[0014]

[Function] Even if the water supply pressure is higher and the flow of water is more dominant than the flow of hot water, the restriction provided in the water discharge pipe makes the flow of water and hot water uneven on the upstream side. This prevents the water from flowing to the water outlet and cancels the water flow, thereby rectifying the flow toward the water outlet into a stable flow. In addition, mixing of water and hot water is promoted by contraction and expansion of the flow path by the throttle portion.

When the constricted portion is formed by a rectifying wall provided on the bottom wall side or the upper wall side inside the water discharge pipe, the notch at the center portion divides the internal flow into three layers in the width direction in the cross section of the flow path. In particular, directivity is given to the flow passing through the notch, and good rectification is possible.

In the case where a guide wall for dividing the cross section of the flow path into a plurality of sections is provided, the flow is rectified while passing through the guide wall,
The present invention corrects flow turbulence due to a difference in supply pressure between water and hot water on the upstream side, thereby enabling stable discharge from a water discharge port.

[0017]

[0018]

FIG. 1 is a cutaway plan view showing an embodiment of a hot and cold water mixing tap according to the present invention, FIG. 2 is a left side view of the cutout, and FIG.
It is a longitudinal cross-sectional view by the vertical cross-sectional view by a line arrow.

In the figure, a water handle 2 and a hot water handle 3 are provided on the right and left sides of the upper surface of the main body 1 of a hot and cold water mixer tap manufactured by a casting method, respectively.

The water handle 2 is, for example, filed by the present applicant as Japanese Utility Model Application No. 54-13294, and
As described in Japanese Patent Application Publication No. 113871, a top valve body for opening and closing a flow path from a water supply port 2a provided on the lower surface of the main body 1 is provided.
Then, by turning the water handle 2, the valve body comes into contact with or separates from the valve seat connected to the water supply port 2a, and the flow rate can be set by changing the opening degree.

On the other hand, the hot water handle 3 has the same structure, and may be provided with a valve body which can be connected to and separated from a valve seat communicating with a hot water supply port 3a opened on the lower surface of the main body 1.

At the center of the main body 1, a water discharge pipe 4 projecting forward with an obliquely upward inclination is provided integrally, and a water discharge port 4a is opened at the lower surface at the end. A rectifying net 4b in which a plurality of meshes are overlapped is provided in the water outlet 4a.

The water supply port 2 at the base of the water discharge pipe 4
On the inner wall on the a side, a shielding wall 5 is provided to partially block a flow path from the water supply port 2a to the inside of the water discharge pipe 4. As shown in FIG. 2, the shielding wall 5 is formed over the bottom wall, the side wall, and the upper wall inside the main body 1, and its direction is directed to the hot water supply port 3a as shown in FIG. . With the shielding wall 5 having such an arrangement, the flow of water from the water supply port 2a side reaches the water shielding pipe 5 and then flows toward the water discharge pipe 4 while bypassing the hot water supply port 3a side.

Therefore, the water supply port 2a and the hot water supply port 3
When the flow path on the side a is simultaneously opened, the water supply flows positively into the hot water side, and even if the water supply pressure is higher than the hot water supply pressure, only the water flows into the water discharge pipe 4 in advance. And promotes mixing of water and hot water.

Further, a flow regulating wall 6 is provided as a throttle at the base end of the portion inside the water discharge pipe 4 where the flow passage area is uniformed up to the water discharge port 4a as shown in FIG. As shown in FIG. 3, the rectifying wall 6 has a shape that rises from the bottom wall 4c of the water discharge pipe 4 to the entire length in the width direction of the flow path cross section, and has a notch 6a whose central portion is slightly lower when viewed from the front. Things.

In the above configuration, the water supply port 2a and the hot water supply port 3a are provided by the water handle 2 and the hot water handle 3.
When the flow path is opened, water and hot water flow into the main body 1 from these supply ports 2a and 3a, respectively. At this time, the water flows once by the shielding wall 5 to bypass the hot water supply port 3a, and flows into the water discharge pipe 4 obliquely from the left side as shown in FIG.

With respect to such a flow, the flow channel area is sharply reduced by the rectifying wall 6 rising at the base end of the water discharge pipe 4 and the bottom wall 4c. The throttle acts as a resistance to the flow of the mixed water, and interferes with the flow direction of the mixed water of hot water and hot water by the shielding wall 5. Since the rectifying wall 6 is not at a fixed height but has a notch 6a at the center thereof,
A portion passing through the notch 6a in the flow toward the water discharge port 4a provides a throttle not only in the vertical direction of the flow path cross section but also in the width direction.
For this reason, when the flow passes through the flow regulating wall 6, the action of offsetting the bypass flow of the mixed water by the shielding wall 5 and the action of correcting the flow by the notch 6 a by the interference work, so that the flow toward the water discharge port 4 a is rectified. can do.

Even if the flow is such that water is diverted to the hot water side by the shielding wall 5 and forcedly mixed, the flow is stabilized by providing the rectifying wall 6 in the water discharge pipe 4. It can be discharged from the spout 4a. In addition, mixing of the hot water and the hot water is further promoted even when passing through the rectifying wall 6, and it is possible to discharge in a sufficiently mixed state.

FIG. 4 shows an example in which a rectifying wall provided in the throttle portion is provided on the upper wall side inside the water discharge pipe 4. FIG. 4 (a) is a cutaway left side view of the hot and cold water mixing tap, and FIG. () Is a longitudinal sectional view taken along line BB of FIG.

The flow regulating wall 60 provided in the water discharge pipe 4 as a throttle portion is provided so as to protrude downward from the upper wall 4d closer to the water discharge port 4a as compared with the previous example. The rectifying wall 60 has a shape that is substantially symmetrical up and down with respect to the shape of the rectifying wall 6 provided on the bottom wall 4c shown in FIG. 3, and a cutout 60a that is convex upward is provided at the center. ing.

Even when such a rectifying wall 60 is provided,
As in the previous example, the detour flow of the mixed water by the shielding wall 5 is canceled and at the same time, the flow is corrected by the notch 60a and
Rectification of the flow to a is possible. In particular, when the water supply and hot water supply pressure are high, the rectification wall 6 is attached to the bottom wall 4c as in the previous example.
Is provided, there is a possibility that the mixed water will create a flow that repels in the water discharge pipe 4, but if the rectifying wall 60 is provided on the upper wall 4d, the flow along the bottom wall 4c will be disturbed. The degree of inviting water is reduced, and stable water discharge becomes possible.

FIGS. 5 to 8 show another embodiment. FIG. 5 is a cutaway plan view of a hot and cold water mixing tap, and FIG. 6 is a cutaway left side view. The same members as those in the previous example are designated by the same reference numerals, and detailed description thereof will be omitted.

In the figure, a rectifying wall 7 is provided at the base end of the water discharge pipe 4 to narrow the width direction of the cross section of the flow path. As shown in FIG. 7 (a vertical sectional view taken along the line CC in FIG. 4), the rectifying wall 7 has an opening 7a having a constant width in the center.

Even with the rectifying wall 7 having such an opening 7a, the water that forms a detour flow by the upstream shielding wall 5 and the flow in the water discharge pipe 4 in which the elements of the flow are propagated following this detour flow Can be rectified, and stable discharge from the water discharge port 4a is performed.

FIG. 8 is a longitudinal sectional view showing another example of the flow regulating wall 7. FIG. 8A shows an inverted triangular opening 7b, and FIG. 8B shows a circular opening 7c. FIG. 3C shows a flat cross-shaped opening 7d.

In the shape of the opening 7b shown in FIG. 7A, the wall rises obliquely upward from the bottom wall of the water discharge pipe 4, and the flow is restricted not only in the vertical direction but also in the width direction. To correct the flow. Similarly, in the case of the circular opening 7c shown in FIG. 3B, the flow path cross section is narrowed down to the entire circumference, so that the flow toward the discharge port 4a can be corrected. Further, when the cross-shaped opening 4d shown in FIG. 3C is used, the flow of the mixed water after the detour and the flow in the vertical and horizontal directions in the flow path are corrected, and the water outlet 4a is formed. Is rectified.

9 to 12 show another embodiment. FIG. 9 is a cutaway plan view of a hot and cold water mixing tap, and FIG. 10 is a cutaway left side view.

At the base end of the water discharge pipe 4, two guide walls 8a and 8b are provided in the width direction, and as shown in FIG. 11 (vertical sectional view taken along the line DD of FIG. 9), The road section is divided into three sections. These guide walls 8a and 8b are made to have a certain length in the flow direction as shown in FIG. 10 so as to give directionality to the flow of the mixed water passing therebetween.

In the case where the guide walls 8a and 8b are provided, the water outlet 4
Straighten in the direction a. Since the cross section of the flow path is divided into three sections by the guide walls 8a and 8b, the flow passing therethrough is rectified so that the influence of the detour on the upstream side is attenuated. Therefore, it is possible to stably discharge the mixed water from the water outlet 4a.

FIG. 12 shows three guide walls 8c, 8d and 8e.
This is an example in which is provided.

The center guide wall 8d is located slightly upstream of the guide walls 8c and 8e located on the left and right sides thereof, and only the front end and the rear end of the guide walls 8c and 8e overlap in the flow direction. ing. Therefore, in this portion, the flow path cross section is divided into four as shown in FIG. 10B (vertical cross-sectional view taken along the line EE in FIG.
It is divided into three in the same way as

In the arrangement of the guide walls 8c to 8e, the flow of the mixed water is firstly reduced by the center guide wall 8d.
It is divided and then divided into four by the guide walls 8c and 8e. By giving such a two-stage division to the flow, the orientation of the flow can be more efficiently given by the arrangement of the guide walls 8c to 8e, and the flow of the mixed water flowing toward the water discharge port 4a can be rectified. Done.

Here, in each of the above examples, the main body 1 is provided with the shielding wall 5 which diverts the water supply from the water supply port 2a toward the hot water supply port 3a. However, it is needless to say that the mixed water to the spout 4a can be rectified. That is, even when the water supply pressure is higher than the hot water supply pressure and water precedes, the flow is corrected by the restriction by the flow regulating walls 6 and 7 and the restriction by dividing the flow paths of the plurality of guide walls 8a to 8c. At the same time, mixing is promoted. For this reason, even under the water discharge condition where the water supply and the hot water supply pressure are not easily affected by the provision of the shielding wall 5, the provision of such rectifying walls 6, 7 and the guide walls 8a to 8c can provide stable water discharge. Very effective.

[0044]

According to the present invention, the turbulence of the flow when the water and the hot water are mixed can be directed to the water discharge port side by cutting off the turbulence on the upstream side by the throttle portion and the guide wall. . For this reason, even if there is a difference between the water supply pressure and the hot water supply pressure, the difference can be absorbed and rectified, and stable water discharge without pulsation, twisting of stream lines, and the like can be performed.

Even in the case where a shielding wall is provided on the water supply port side to divert water to the hot water supply port side, the flow can be similarly rectified by the restricting portion and the guide wall, and good mixing and rectification by the shielding wall can be simultaneously performed. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a cutaway plan view showing an embodiment of a hot and cold water mixing tap of the present invention.

2 is a cutaway left side view of the hot and cold water mixing tap of FIG. 1. FIG.

FIG. 3 is a longitudinal sectional view taken along line AA of FIG. 1;

FIG. 4 is an example in which a rectifying wall is provided on an upper wall inside a water discharge pipe. FIG. 4A is a cutaway left side view of a hot and cold water mixing tap, and FIG. FIG. 3 is a vertical sectional view taken along line BB of FIG.

FIG. 5 is a cutaway plan view showing another embodiment of the hot and cold water mixing tap of the present invention.

6 is a cutaway left side view of the hot and cold water mixing tap of FIG. 5;

FIG. 7 is a vertical sectional view taken along line CC of FIG. 5;

FIG. 8 is a longitudinal sectional view of a main part showing another example of the shape of the opening provided in the flow regulating wall.

FIG. 9 is a cutaway plan view showing an embodiment in which a guide wall is provided in a water discharge pipe.

FIG. 10 is a cutaway left side view of the hot and cold water mixing tap of FIG. 9;

11 is a vertical sectional view taken along line DD of FIG. 9;

12A and 12B show an example in which three guide walls are provided, wherein FIG. 12A is a cutaway plan view of a distal end portion of a water discharge pipe, and FIG. 12B is a line EE in FIG. It is a longitudinal sectional view by an arrow.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Handle for water 2a Water supply port 3 Handle for hot water 3a Hot water supply port 4 Water discharge pipe 4a Water discharge port 4c Bottom wall 4d Upper wall 5 Shielding wall 6 Rectifying wall 6a Notch 7 Rectifying wall 7a, 7b, 7c Opening 8a, 8b , 8c Guide wall 60 Straightening wall 60a Notch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 57-113871 (JP, U) Japanese Utility Model Sho 61-19172 (JP, U) Japanese Patent Publication 57-25748 (JP, B2) Japanese Utility Model Sho 56- 32690 (JP, Y2) Jikken Sho 15-15796 (JP, Y2) Jikku 63-21213 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16K 11/00-11 / 24 E03C 1/00-1/10

Claims (3)

(57) [Scope of request for utility model registration] 1. A hot and cold water mixing tap having a water supply port and a hot water supply port provided on a main body separated from each other, and a water discharge pipe protruding from the main body substantially at the center between the water supply port and the hot water supply port, A throttle section for reducing the cross section of the flow path inside the water discharge pipe and rectifying the flow toward the water discharge port at the tip end;
Is a rectifying wall raised on the bottom wall inside the water discharge pipe.
The straightening wall is formed at the center part of the remaining right and left parts.
A water / water mixer tap with a notch lower than the minute . 2. A water supply port and a hot water supply port are separated from each other.
Installed in the body, between the water supply port and hot water supply port.
A hot / water mixer tap with a spout pipe protruding from the main body at the center.
Then, the cross section of the flow path is reduced inside the water discharge pipe to discharge the water at the tip.
Comprises a throttle portion for rectifying the flow toward the water outlet, said throttle portion is formed by a baffle wall projecting from the inside of the upper wall under the water discharge pipe,該整flow wall to the remaining left and right portions of the center portion compared to hot water mixing valve ing provided with a cutout upwardly convex to increase the channel cross-section. 3. The water supply port and the hot water supply port are separated from each other.
Installed in the body, between the water supply port and hot water supply port.
A hot / water mixer tap with a spout pipe protruding from the main body at the center.
The inside of the water discharge pipe is divided into a plurality of cross sections in the width direction.
A hot / water mixer tap with a guide wall to split .